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  • Berlin/Heidelberg  (63)
  • Rijeka : InTech  (47)
  • English  (110)
  • French
  • Japanese
  • 2015-2019  (110)
  • 1980-1984
  • 2018  (110)
  • 1983
Collection
Language
  • English  (110)
  • French
  • Japanese
Years
  • 2015-2019  (110)
  • 1980-1984
Year
  • 1
    Keywords: computational fluid dynamics
    Description / Table of Contents: Chapter 1: High-Performance Computing: Dos and Don’ts by Guillaume Houzeaux, Ricard Borrell, Yvan Fournier, Marta Garcia- Gasulla, Jens Henrik Göbbert, Elie Hachem, Vishal Mehta, Youssef Mesri, Herbert Owen and Mariano Vázquez --- Chapter 2: Multilevel Variable-Block Schur-Complement-Based Preconditioning for the Implicit Solution of the Reynolds- Averaged Navier-Stokes Equations Using Unstructured Grids by Bruno Carpentieri and Aldo Bonfiglioli --- Chapter 3: Free-Surface Flow Simulations with Smoothed Particle Hydrodynamics Method using High-Performance Computing by Corrado Altomare, Giacomo Viccione, Bonaventura Tagliafierro, Vittorio Bovolin, José Manuel Domínguez and Alejandro Jacobo Cabrera Crespo --- Chapter 4: Highly Deforming Computational Meshes for CFD Analysis of Twin-Screw Positive Displacement Machines by Sham Rane, Ahmed Kovačević, Nikola Stošić and Ian Smith --- Chapter 5: Optimization Design by Coupling Computational Fluid Dynamics and Genetic Algorithm by Jong-Taek Oh and Nguyen Ba Chien --- Chapter 6: Applications of CFD for Process Safety by Luis G. Zárate, Sebastián Uribe and Mario E. Cordero --- Chapter 7: Adaptation to Climate Change at Local Scale: A CFD Study in Porto Urban Area by Vera Rodrigues, Sandra Rafael, Sandra Sorte, Sílvia Coelho, Hélder Relvas, Bruno Vicente, Joana Leitão, Myriam Lopes, Ana Isabel Miranda and Carlos Borrego --- Chapter 8: Computational Fluid Dynamics (CFD) Applied to a Glass Vaporization Chamber for Introduction of Micro- or Nano-Size Samples into Lab-Based ICPs and to a CFD-Derived (and Rapidly Prototyped Via 3D Printing) Smaller-Size Chamber for Portable Microplasmas by Hamid R. Badiei, Gordon Stubley, Ryan Fitzgerald, Melanie Saddler and Vassili Karanassios --- Chapter 9: Analysis of Biomass Waste Cofiring into Existing Coal-Fired Power Plant Using Computational Fluid Dynamics by Arif Darmawan, Dwika Budianto, Koji Tokimatsu and Muhammad Aziz --- Chapter 10: CFD Modelling of Coupled Multiphysics-Multiscale Engineering Cases by Mario E. Cordero, Sebastián Uribe, Luis G. Zárate, Reyna Natividad Rangel, Alejandro Regalado-Méndez and Ever Peralta Reyes --- Chapter 11: CFD Analysis of Turbulence Models to Achieve the Digester Mixing Process by Jorge Flores-Velazquez, Abraham Jesus Arzeta-Rios, Waldo Ojeda Bustamante and Teodoro Espinosa-Solares --- Chapter 12: CFD for the Design and Optimization of Slurry Bubble Column Reactors by Omar M. Basha and Badie I. Morsi --- Chapter 13: Two Different Formulations for Solving the Navier-Stokes Equations with Moderate and High Reynolds Numbers by Blanca Bermúdez, Alejandro Rangel-Huerta, Wuiyevaldo Fermín Guerrero-Sánchez and José David Alanís --- Chapter 14: Vibration Characteristics of Fluid-Filled Functionally Graded Cylindrical Material with Ring Supports by Muzamal Hussain, Aamir Shahzad, Muhammad Nawaz Naeem and Maogang He --- Chapter 15: CFD Simulations of Crude Oil Fouling on Heat Transfer Surfaces by Ramasamy Marappa Gounder and Sampath Emani --- Chapter 16: Surrogate Model Applied for Analysis of Uncertain Parameters in Turbulent Mixing Flows by Boštjan Končar, Andrej Prošek and Matjaž Leskovar
    Pages: Online-Ressource (410 Seiten)
    ISBN: 9789535137917
    Language: English
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  • 2
    Unknown
    Rijeka : InTech
    Keywords: kinetics
    Description / Table of Contents: Chapter 1: Introductory Chapter: Kinetics from Past to Future by George Z. Kyzas and Athanasios C. Mitropoulos --- Chapter 2: Discrete Boltzmann Modeling of Compressible Flows by Aiguo Xu, Guangcai Zhang and Yudong Zhang --- Chapter 3: Collective Mode Interactions in Lorentzian Space Plasma by Nazish Rubab and Sadia Zaheer --- Chapter 4: Kinetic Theory of Creep and Long-Term Strength of Metals by Alexander Lokoshchenko and Leonid Fomin --- Chapter 5: Kinetic Equations of Active Soft Matter by Viktor Gerasimenko --- Chapter 6: Non-Linear Kinetic Analysis of Protein Assembly Based on Center Manifold Theory by Tatsuaki Tsuruyama --- Chapter 7: Plasma Kinetic Theory by Kashif Chaudhary, Auwal Mustapha Imam, Syed Zuhaib Haider Rizvi and Jalil Ali
    Pages: Online-Ressource (138 Seiten)
    ISBN: 9789535138013
    Language: English
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  • 3
    Keywords: synchrotron radiation ; acceleration ; high energy accelerator ; high energy physics
    Description / Table of Contents: Chapter 1: Phase Space Dynamics of Relativistic Particles by Hai Lin --- Chapter 2: Motion of Electrons in Planar Ideal Undulator by Nikolay Smolyakov --- Chapter 3: Concept and Numerical Simulations of Multi-Beam Linear Accelerators EVT with Depressed Collector for Drive Beam by Vladimir E. Teryaev --- Chapter 4: Optically Controlled Laser-Plasma Electron Acceleration for Compact γ-Ray Sources by Serge Y. Kalmykov, Xavier Davoine, Isaac Ghebregziabher and Bradley A. Shadwick --- Chapter 5: Nuclear Safety Study of High Energy Heavy-ion Medical Accelerator Facility by Oyeon Kum --- Chapter 6: Radiation Safety Aspects of Linac Operation with Bremsstrahlung Converters by Matthew Hodges and Alexander Barzilov --- Chapter 7: X-Ray Diffraction Detects D-Periodic Location of Native Collagen Crosslinks In Situ and Those Resulting from Non- Enzymatic Glycation by Rama Sashank Madhurapantula and Joseph P.R.O. Orgel --- Chapter 8: Ion Beam, Synchrotron Radiation, and Related Techniques in Biomedicine: Elemental Profiling of Hair by Karen J. Cloete
    Pages: Online-Ressource (208 Seiten)
    ISBN: 9789535138365
    Language: English
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  • 4
    Unknown
    Rijeka : InTech
    Keywords: chemical kinetics
    Description / Table of Contents: Chapter 1: Complex Reactions and Dynamics by Muhammad Shahzad and Faisal Sultan --- Chapter 2: Mathematical Modeling and Simulation of Nonlinear Process in Enzyme Kinetics by Lakshmanan Rajendran, Mohan Chitra Devi, Carlos Fernandez and Qiuming Peng --- Chapter 3: Autoignition and Chemical-Kinetic Mechanisms of Homogeneous Charge Compression Ignition Combustion for the Fuels with Various Autoignition Reactivity by Dongwon Jung --- Chapter 4: New Materials to Solve Energy Issues through Photochemical and Photophysical Processes: The Kinetics Involved by Tatiana Duque Martins, Antonio Carlos Chaves Ribeiro, Geovany Albino de Souza, Diericon de Sousa Cordeiro, Ramon Miranda Silva, Flavio Colmati, Roberto Batista de Lima, Lucas Fernandes Aguiar, Leandro Lima Carvalho, Renan Gustavo Coelho S. dos Reis and Wemerson Daniel C. dos Santos --- Chapter 5: Competition Kinetics: An Experimental Approach by Murtaza Sayed, Luqman Ali Shah, Javed Ali Khan, Noor S. Shah, Rozina Khattak and Hasan M. Khan --- Chapter 6: Catalyst Kinetics and Stability in Homogeneous Alcohol Acceptorless Dehydrogenation by Martin Nielsen --- Chapter 7: Oxidation of Glycerol to Lactic Acid by Gold on Acidified Alumina: A Kinetic and DFT Case Study by Thabang A. Ntho, Pumeza Gqogqa and James L. Aluha --- Chapter 8: Hydrothermal Precipitation of β-FeOOH Nanoparticles in Mixed Water/Alcohol Solvent by Mahabubur Chowdhury --- Chapter 9: Adsorption, Kinetics and Photoactivity of ZnO-Supported Fly Ash-Sepiolite Ternary Catalyst by Ayşe Neren Ökte --- Chapter 10: Kinetics of Heterogeneous Self-Propagating High-Temperature Reactions by Christopher E. Shuck and Alexander S. Mukasyan --- Chapter 11: Ultrasound as a Metrological Tool for Monitoring Transesterification Kinetics by Raphaela M. Baêsso, Pâmella A. Oliveira, Gabriel C. Moraes, André V. Alvarenga and Rodrigo P.B. Costa-Félix
    Pages: Online-Ressource (224 Seiten)
    ISBN: 9789535138167
    Language: English
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  • 5
    Keywords: semiconductors ; Halbleiter
    Description / Table of Contents: Chapter 1: Investigation of the Nanostructured Semiconductor Metamaterials by Aleksej Trofimov, Tatjana Gric and Ortwin Hess --- Chapter 2: Understanding the Mechanisms that Affect the Quality of Electrochemically Grown Semiconducting Nanowires by Abhay Singh and Usha Philipose --- Chapter 3: Semiconductor Quantum Wells with BenDaniel-Duke Boundary Conditions and Janus Nanorods by Victor Barsan --- Chapter 4: Nanostructured ZnO, Cu2ZnSnS4, Cd1−xZnxTe Thin Films Obtained by Spray Pyrolysis Method by Oleksandr Dobrozhan, Denys Kurbatov, Petro Danilchenko and Anatoliy Opanasyuk --- Chapter 5: E-ALD: Tailoring the Optoeletronic Properties of Metal Chalcogenides on Ag Single Crystals by Emanuele Salvietti, Andrea Giaccherini, Filippo Gambinossi, Maria Luisa Foresti, Maurizio Passaponti, Francesco Di Benedetto and Massimo Innocenti --- Chapter 6: Pulsed Electrochemical Deposition of CuInSe2 and Cu(In,Ga)Se2 Semiconductor Thin Films by Sreekanth Mandati, Bulusu V. Sarada, Suhash R. Dey and Shrikant V. Joshi --- Chapter 7: The Electrochemical Performance of Deposited Manganese Oxide-Based Film as Electrode Material for Electrochemical Capacitor Application by Chan Pei Yi and Siti Rohana Majid --- Chapter 8: Semiconducting Electrospun Nanofibers for Energy Conversion by Giulia Massaglia and Marzia Quaglio
    Pages: Online-Ressource (186 Seiten)
    ISBN: 9789535138846
    Language: English
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  • 6
    Unknown
    Rijeka : InTech
    Keywords: estuaries ; coastal research ; river
    Description / Table of Contents: Chapter 1: Coupling Watersheds, Estuaries and Regional Oceanography through Numerical Modelling in the Western Iberia: Thermohaline Flux Variability at the Ocean-Estuary Interface by Francisco J. Campuzano, Manuela Juliano, João Sobrinho, Hilda de Pablo, David Brito, Rodrigo Fernandes and Ramiro Neves --- Chapter 2: Weather, Hydrological and Oceanographic Conditions of the Northern Coast of the Río de la Plata Estuary during ENSO 2009–2010 by Ernesto Brugnoli, José Verocai, Pablo Muniz and Felipe García- Rodríguez --- Chapter 3: Pesticides in Worldwide Aquatic Systems: Part I by Catarina Cruzeiro, Eduardo Rocha and Maria João Rocha --- Chapter 4: Pesticides in Worldwide Aquatic Systems: Part II by Catarina Cruzeiro, Eduardo Rocha and Maria João Rocha --- Chapter 5: The Ecology and Food Web Dynamics of South African Intermittently Open Estuaries by Pierre William Froneman --- Chapter 6: The Relationship of Sediment and Intersitial Water Properties with Mangrove Health in a Subtropical Coastal Lagoon of Mexico by Carlos Augusto Zenteno-Palma, Aramis Olivos-Ortiz, María del Carmen Álvarez, Sonia Isabel Quijano-Scheggia and Gloria Alicia Jiménez-Ramón
    Pages: Online-Ressource (126 Seiten)
    ISBN: 9789535138808
    Language: English
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  • 7
    Keywords: FEM ; Finite Element Method ; simulation
    Description / Table of Contents: Chapter 1: FEM Analysis of Mechanical and Structural Properties of Long Fiber-Reinforced Composites by Michal Petrů and Ondřej Novák --- Chapter 2: Finite Element Dynamic Analysis on Residual Stress Distribution of Titanium Alloy and Titanium Matrix Composite after Shot Peening Treatment by Lechun Xie, Zhou Wang, Chengxi Wang, Yan Wen, Liqiang Wang, Chuanhai Jiang, Weijie Lu, Lai-Chang Zhang and Lin Hua --- Chapter 3: Multiscale Wavelet Finite Element Analysis in Structural Dynamics by Mutinda Musuva and Cristinel Mares --- Chapter 4: Numerical Analysis of Hot Polymer-Coated Steel Pipeline Joints in Bending by Finian McCann, Guido Ridolfi, Erwan Karjadi, Harm Demmink and Helen Boyd --- Chapter 5: Application of Finite Element Analysis in Multiscale Metal Forming Process by Zhengyi Jiang and Haibo Xie --- Chapter 6: Finite Element Thermal Analysis of Metal Parts Additively Manufactured via Selective Laser Melting by Dario Pitassi, Enrico Savoia, Vigilio Fontanari, Alberto Molinari, Valerio Luchin, Gianluca Zappini and Matteo Benedetti --- Chapter 7: Adaptive Modeling and Simulation of Elastic, Dielectric and Piezoelectric Problems by Grzegorz Zboiński --- Chapter 8: Vibration Simulation of Electric Machines by Marcel Janda and Kristyna Jandova --- Chapter 9: Numerically and Analytically Forecasting the Coal Burst Using Energy Based Approach Methods by Faham Tahmasebinia, Chengguo Zhang, Ismet Canbulat, Onur Vardar and Serkan Saydam --- Chapter 10: Linear Thermo-Poroelasticity and Geomechanics by Horacio Florez --- Chapter 11: Numerical Analysis of the Incompressible Fluid Flow and Heat Transfer by Toshio Tagawa --- Chapter 12: Numerical Simulation of Wave (Shock Profile) Propagation of the Kuramoto-Sivashinsky Equation Using an Adaptive Mesh Method by Denson Muzadziwa, Stephen T. Sikwila and Stanford Shateyi --- Chapter 13: Numerical Analysis on the Simulated Heavy Rainfall Event of Tropical Cyclone Fung-Wong by Lei-Ming Ma and Xu-Wei Bao --- Chapter 14: Weighted Finite-Element Method for Elasticity Problems with Singularity by Viktor Anatolievich Rukavishnikov and Elena Ivanovna Rukavishnikova
    Pages: Online-Ressource (322 Seiten)
    ISBN: 9789535138501
    Language: English
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  • 8
    Unknown
    Rijeka : InTech
    Keywords: environmental data mining ; big data
    Description / Table of Contents: 1. Ensemble Methods in Environmental Data Mining / by Goksu Tuysuzoglu, Derya Birant and Aysegul Pala --- 2. Estimating Customer Lifetime Value Using Machine Learning Techniques / by Sien Chen --- 3. Determination and Classification of Crew Productivity with Data Mining Methods / by Abdullah Emre Keleş and Mümine Kaya Keleş --- 4. Mining HCI Data for Theory of Mind Induction / by Oksana Arnold and Klaus P. Jantke --- 5. Performance-Aware High-Performance Computing for Remote Sensing Big Data Analytics / by Mustafa Kemal Pektürk and Muhammet Ünal --- 6. Early Prediction of Patient Mortality Based on Routine Laboratory Tests and Predictive Models in Critically Ill Patients / by Sven Van Poucke, Ana Kovacevic and Milan Vukicevic --- 7. Semantic Infrastructure for Service Environment Supporting Successful Aging / by Vesa Salminen, Päivi Sanerma, Seppo Niittymäki and Patrick Eklund --- 8. Adaptive Neural Network Classifier-Based Analysis of Big Data in Health Care / by Manaswini Pradhan --- 9. Identification of Research Thematic Approaches Based on Keywords Network Analysis in Colombian Social Sciences / by José Hernando Ávila-Toscano, Ivón Catherine Romero-Pérez, Ailed Marenco-Escuderos and Eugenio Saavedra Guajardo --- 10. Data Privacy for Big Data Publishing Using Newly Enhanced PASS Data Mining Mechanism / by Priyank Jain, Manasi Gyanchandani and Nilay Khare
    ISBN: 9781789235975
    Language: English
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  • 9
    Keywords: fossil fuels ; CO2 emission ; greenhouse gases ; CO2 capture ; CO2 storage
    Description / Table of Contents: 1. Introductory Chapter: An Outline of Carbon Dioxide Chemistry, Uses and Technology / by Janah Shaya, Hassan Srour and Iyad Karamé --- 2. Electrochemical/Photochemical CO2 Reduction Catalyzed by Transition Metal Complexes / by Hitoshi Ishida --- 3. Carbon Dioxide Conversion to Methanol: Opportunities and Fundamental Challenges / by Sajeda A. Al-Saydeh and Syed Javaid Zaidi --- 4. Effect of Overlapping Fe/TiO2 Coated on Netlike Glass Disc and Cu Disc on CO2 Reduction / by Akira Nishimura --- 5. CO2 Reforming with CH4 via Plasma Catalysis System / by Wei Chieh Chung and Moo Been Chang --- 6. Understanding Interaction Capacity of CO2 with Organic Compounds at Molecular Level: A Theoretical Approach / by Pham Ngoc Khanh and Nguyen Tien Trung --- 7. [11C]Carbon Dioxide: Starting Point for Labeling PET Radiopharmaceuticals / by Lingyun Yang, Peter J. H. Scott and Xia Shao --- 8. Solvents for Carbon Dioxide Capture / by Fernando Vega, Mercedes Cano, Sara Camino, Luz M. Gallego Fernández, Esmeralda Portillo and Benito Navarrete --- 9. Advances in Porous Adsorbents for CO2 Capture and Storage / by Arindam Modak and Subhra Jana --- 10. Process Analytical Technology for CO2 Capture / by M.H. Wathsala N. Jinadasa, Klaus-J. Jens and Maths Halstensen --- 11. Carbon Dioxide Use in High-Pressure Extraction Processes / by Vânia Maria Borges Cunha, Marcilene Paiva da Silva, Wanessa Almeida da Costa, Mozaniel Santana de Oliveira, Fernanda Wariss Figueiredo Bezerra, Anselmo Castro de Melo, Rafael Henrique Holanda Pinto, Nelio Teixeira Machado, Marilena Emmi Araujo and Raul Nunes de Carvalho Junior --- 12. A Review on the Application of Enhanced Oil/Gas Recovery through CO2 Sequestration / by Abdelmalek Atia and Kamal Mohammedi
    ISBN: 9781789235753
    Language: English
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  • 10
    Keywords: coastal research ; coastal protection
    Description / Table of Contents: 1. Introductory Chapter: Introduction to Sea Level Rise and Coastal Infrastructure / by Yuanzhi Zhang, Kapo Wong, Yijun Hou and Xiaomei Yang --- 2. Constructing Local Sea Level Rise Scenarios for Assessing Possible Impacts and Adaptation Needs: Insights from Coasts of India / by Dhanya Praveen, Andimuthu Ramachandran and Kandasami Palanivelu --- 3. Analysis of Dynamic Effects on the Brazilian Vertical Datum / by Luciana M. Da Silva, Sílvio R.C. De Freitas and Regiane Dalazoana --- 4. Alterations within the Coastal Urban Environments: Case of the Coastal Squares of Istanbul Megacity / by Hatice Ayatac, Fatma Aycim Turer Baskaya, Eren Kurkcuoglu, Ozge Celik and Sinem Becerik --- 5. Coastal Wetland Vegetation in Response to Global Warming and Climate Change / by Chao Zhou, Kapo Wong and Jianhua Zhao --- 6. Impact of Enteromorpha Blooms on Aquaculture Research Off Qianliyan Island, Yellow Sea, China / by Guo Jie, Zhang Tianlong, Ji Diansheng, Mu Yankai, Yu Hongyang, Hou Chawei and Ji Ling --- 7. Geohazards in the Fjords of Northern Patagonia, Chile / by María-Victoria Soto, Pablo Sarricolea, Sergio A. Sepúlveda, Misael Cabello, Ignacio Ibarra, Constanza Molina and Michael Maerker --- 8. Coastal Disasters and Remote Sensing Monitoring Methods / by Yan Yu, Shengbo Chen, Tianqi Lu and Siyu Tian --- 9. Revealing Landscape Planning Strategies for Disaster-Prone Coastal Urban Environments: The Case of Istanbul Megacity / by Fatma Aycim Turer Baskaya --- 10. Coastal Geomorphology and Its Impacts / by Tianqi Lu, Shengbo Chen and Yan Yu --- 11. Beach Users’ Perceptions Toward Beach Quality and Crowding: A Case of Cenang Beach, Langkawi Island, Malaysia / by Hamed Mehranian and Azizan Marzuki --- 12. Remote Sensing Retrieval Study of the Surface Kinetic Parameters in the Yangtze Estuary and Its Adjacent Waters / by Shengbo Chen and Lihua Wang --- 13. Spatio-Temporal Analysis of Sea Surface Temperature in the East China Sea Using TERRA/MODIS Products Data / by Shaoqi Gong and Kapo Wong
    ISBN: 9781789235470
    Language: English
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  • 11
    Keywords: earthquake ; prognosis ; seismology ; natural disasters
    Description / Table of Contents: 1. Introductory Chapter: Earthquakes, Life at Risk / Valentina Svalova --- 2. The Earthquake Disaster Risk in Japan and Iran and the Necessity of Dynamic Learning from Large Earthquake Disasters over Time / Michaela Ibrion and Nicola Paltrinieri --- 3. The Major Cause of Earthquake Disasters: Shear Bandings / Tse-Shan Hsu --- 4. Development of an UAS for Earthquake Emergency Response and Its Application in Two Disastrous Earthquakes / Chaoyong Peng, Zhiqiang Xu, Jiansi Yang, Yu Zheng, Weiping Wang, Sha Liu and Baofeng Tian --- 5. Automated Model Construction for Seismic Disaster Assessment of Pipeline Network in Wide Urban Area / Hideyuki O-tani, Muneo Hori and Lalith Wijerathne --- 6. Frequency-Magnitude Distribution of Earthquakes / Zuhair Hasan El-Isa --- 7. The Prediction of Earthquake Ground Motions by Regression Model / Pithan Pairojn and Sirithip Wasinrat --- 8. Principles of Probabilistic Seismic Hazard Assessment (PSHA) and Site Effect Evaluation and Its Application for the Volcanic Environment in El Salvador / Walter Salazar --- 9. An Estimation of “Energy” Magnitude Associated with a Possible Lithosphere-Atmosphere-Ionosphere Electromagnetic Coupling Before the Wenchuan MS8.0 Earthquake / Mei Li, Wenxin Kong, Chong Yue, Shu Song, Chen Yu, Tao Xie and Xian Lu --- 10. Finite Element Models of Elastic Earthquake Deformation / Sui Tung, Timothy Masterlark and Daniel Sai Huen Lo --- 11. Simulation of Broadband Strong Motion Based on the Empirical Green’s Spatial Derivative Method / Michihiro Ohori --- 12. Structural Seismic Input Model on the Condition of Slope Site / Li Jianbo and Liu Weihong --- 13. Damage Estimation of a Steel-Framed Building under Tsunami Flow Occurring after Earthquake / Daigoro Isobe and Seizo Tanaka --- 14. Structure-Soil-Structure Interaction between Underground Structure and Surface Structure / Huai-feng Wang --- 15. Tunnel Vaults under Seismic Excitation / Roberto Guidotti and Alberto Castellani --- 16. Use of Polyethylene Terephthalate Fibers for Strengthening of Reinforced Concrete Frame Made of Low-Grade Aggregate / Comingstarful Marthong --- 17. EQ-grid: A Multiaxial Seismic Retrofitting System for Masonry Buildings / Stefania Rizzo and Lothar Stempniewski
    ISBN: 9781789239508
    Language: English
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  • 12
    Keywords: acoustic waves ; sound waves ; seismology ; earthquake ; atmosphere
    Description / Table of Contents: Chapter 1: Optimized Finite Difference Methods for Seismic Acoustic Wave Modeling by Yanfei Wang and Wenquan Liang --- Chapter 2: Acoustic Analysis of Enclosed Sound Space as well as Its Coupling with Flexible Boundary Structure by Jingtao Du, Yang Liu and Long Liu --- Chapter 3: Sound Waves in Complex (Dusty) Plasmas by Aamir Shahzad, Muhammad Asif Shakoori, Maogang He and Sajid Bashir --- Chapter 4: Acoustic Wave Monitoring of Fluid Dynamics in the Rock Massif with Anomaly Density, Stressed and Plastic Hierarchic Inclusions by Olga Hachay and Andrey Khachay --- Chapter 5: In-Fiber Acousto-Optic Interaction Based on Flexural Acoustic Waves and Its Application to Fiber Modulators by Miguel Ángel Bello Jiménez, Gustavo Ramírez-Meléndez, Erika Hernández-Escobar, Andrés Camarillo-Avilés, Rosa López-Estopier, Olivier Pottiez, Cristian Cuadrado-Laborde, Antonio Díez, José L. Cruz and Miguel V. Andrés --- Chapter 6: Wave Propagation in Porous Materials by Zine El Abiddine Fellah, Mohamed Fellah, Claude Depollier, Erick Ogam and Farid G. Mitri --- Chapter 7: A Novel Idea of Coherent Acoustic Wave-Induced Atmospheric Refractivity Fluctuation and Its Applications by Shuhong Gong, Yu Liu, Muyu Hou and Lixin Guo
    Pages: Online-Ressource (152 Seiten)
    ISBN: 9789535137160
    Language: English
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  • 13
    Keywords: medicinal chemistry ; radiochemistry ; chemical biology ; molecular imaging
    Description / Table of Contents: Chapter 1: Green Process of Three-Component Prostaglandin Synthesis and Rapid 11C Labelings for Short-Lived PET Tracers by Masaaki Suzuki, Hiroko Koyama, Hideki Ishii, Koichi Kato, Margareta Ögren and Hisashi Doi
    Pages: Online-Ressource (76 Seiten)
    ISBN: 9789535137658
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  • 14
    Keywords: fly ash ; coal fly ash ; waste management
    Description / Table of Contents: Chapter 1: Introductory Chapter: Coal Fly Ash and Its Application for Remediation of Acid Mine Drainage by Mugera Wilson Gitari and Segun Ajayi Akinyemi --- Chapter 2: Metal Adsorption by Coal Fly Ash: The Role of Nano-sized Materials by Anita Etale, Nikita T. Tavengwa and Vusumzi E. Pakade --- Chapter 3: Chemical Stabilization of Coal Fly Ash for Simultaneous Suppressing of As, B, and Se Leaching by Sri Hartuti, Shinji Kambara, Akihiro Takeyama, Farrah Fadhillah Hanum and Erda Rahmilaila Desfitri --- Chapter 4: Evaluation of Ultrasound-assisted Modified Fly Ash for Treatment of Acid Mine Drainage by Deniz Sanliyuksel Yucel and Burcu Ileri --- Chapter 5: Treatment of Acid Mine Drainage with Coal Fly Ash: Exploring the Solution Chemistry and Product Water Quality by Wilson Mugera Gitari, Leslie F. Petrik and Segun A. Akinyemi --- Chapter 6: Phytoreclamation of Abandoned Acid Mine Drainage Site After Treatment with Fly Ash by Madhumita Roy, Roopali Roychowdhury, Pritam Mukherjee, Atanu Roy, Bulti Nayak and Satarupa Roy --- Chapter 7: Challenges in Recovery of Valuable and Hazardous Elements from Bulk Fly Ash and Options for Increasing Fly Ash Utilization by Ajit Behera and Soumya Sanjeeb Mohapatra --- Chapter 8: Thickener Water Neutralization by Mid-Bottom and Fly Ash of Thermal Power Plants and CO2: Organic Humate Mud of AMD Treatment for Remediation of Agricultural Fields by Yıldırım İsmail Tosun --- Chapter 9: Fracture Toughness of Concrete Containing Fly Ash by Grzegorz Ludwik Golewski
    Pages: Online-Ressource (208 Seiten)
    ISBN: 9789535137535
    Language: English
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  • 15
    Unknown
    Rijeka : InTech
    Keywords: image processing
    Description / Table of Contents: Chapter 1: Colorimetry and Dichromatic Vision by Humberto Moreira, Leticia Álvaro, Anna Melnikova and Julio Lillo --- Chapter 2: Image Segmentation Based on Mathematical Morphological Operator by Jianjun Chen, Haijian Shao and Chunlong Hu --- Chapter 3: Color Reconstruction and Resolution Enhancement Using Super-Resolution by Eduardo Quevedo Gutiérrez and Gustavo Marrero Callicó --- Chapter 4: Color Analysis and Image Processing Applied in Agriculture by Jesús Raúl Martínez Sandoval, Miguel Enrique Martínez Rosas, Ernesto Martínez Sandoval, Manuel Moisés Miranda Velasco and Humberto Cervantes De Ávila --- Chapter 5: A Proposal of Color Image Processing Applications for Education by Hiroshi Kamada, Tomohisa Ishikawa and Keitaro Yoshikawa --- Chapter 6: Real-Time Video Analysis in Agriculture by Using LabVIEW Software by Abdullah Beyaz --- Chapter 7: Diffusion-Steered Super-Resolution Image Reconstruction by Baraka J. Maiseli --- Chapter 8: A New Pansharpening Approach for Hyperspectral Images by Chiman Kwan, Jin Zhou and Bence Budavari --- Chapter 9: Thresholding Algorithm Optimization for Change Detection to Satellite Imagery by René Vázquez-Jiménez, Rocío N. Ramos-Bernal, Raúl Romero- Calcerrada, Patricia Arrogante-Funes, Sulpicio Sanchez Tizapa and Carlos J. Novillo --- Chapter 10: Clouds Motion Estimation from Ground-Based Sky Camera and Satellite Images by Ali Youssef Zaher and Afraa Ghanem
    Pages: Online-Ressource (206 Seiten)
    ISBN: 9789535137450
    Language: English
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  • 16
    Keywords: petroleum science ; exploration ; oil ; gas
    Description / Table of Contents: Chapter 1: Petroleum Source Rocks Characterization and Hydrocarbon Generation by Nabil Mohammed Al-Areeq --- Chapter 2: Petroleum Extraction Engineering by Tatjana Paulauskiene --- Chapter 3: Optimal Planning for Deepwater Oilfield Development Under Uncertainties of Crude Oil Price and Reservoir by Zhang Haoran, Liang Yongtu, Ma Jing, Di Pengwei, Yan Xiaohan and Huang Zhongliang --- Chapter 4: Drilling Fluids for Deepwater Fields: An Overview by Luis Alberto Alcázar-Vara and Ignacio Ramón Cortés-Monroy --- Chapter 5: Evaluation of Different Correlation Performance for the Calculation of the Critical Properties and Acentric Factor of Petroleum Heavy Fractions by Dacid B. Lacerda, Rafael B. Scardini, André P. C. M. Vinhal, Adolfo P. Pires and Viatcheslav I. Priimenko --- Chapter 6: Characterization of Crude Oils and the Precipitated Asphaltenes Fraction using UV Spectroscopy, Dynamic Light Scattering and Microscopy by Ernestina Elizabeth Banda Cruz, Nohra Violeta Gallardo Rivas, Ulises Páramo García, Ana Maria Mendoza Martinez and José Aarón Melo Banda --- Chapter 7: Density Anomalies in Crude Oil Blends Reflect Multiple Equilibrium States of Asphaltene Colloidal Aggregates by Igor N. Evdokimov, Aleksey A. Fesan and Aleksandr P. Losev --- Chapter 8: A Realistic Look at Nanostructured Material as an Innovative Approach for Enhanced Oil Recovery Process Upgrading by Lezorgia Nekabari Nwidee, Ahmed Barifcani, Maxim Lebedev, Mohammad Sarmadivaleh and Stefan Iglauer --- Chapter 9: Lessons Learned from Our Recent Research in Chemical Enhanced Oil Recovery (C-EOR) Methods by Bing Wei, Peng Wei, Shuai Zhao and Wanfen Pu --- Chapter 10: Numerical Study of Low Salinity Water Flooding in Naturally Fractured Oil Reservoirs by Reda Abdel Azim, Sara Faiz, Shaik Rahman, Ahmed Elbagir and Nour Al Obaidi --- Chapter 11: Experimental Study of the Effect of Composite Solvent and Asphaltenes Contents on Efficiency of Heavy Oil Recovery Processes at Injection of Light Hydrocarbons by Dmitry N. Borisov, Dmitry V. Milordov, Svetlana G. Yakubova and Makhmut R. Yakubov --- Chapter 12: Total Acid Number Reduction of Naphthenic Acids Using Supercritical Fluid and Ionic Liquids by Pradip Chandra Mandal and Mitsuru Sasaki --- Chapter 13: Conducting Polymers Films Deposited on Carbon Steel and Their Interaction with Crude Oil by Oscar E. Vázquez-Noriega, Javier Guzmán, Nohra V. Gallardo-Rivas, Reinaldo David Martínez Orozco, Ana M. Mendoza-Martínez, María Yolanda Chávez Cinco, Luciano Aguilera Vázquez and Ulises Páramo-García --- Chapter 14: Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl by Thayse A.L. Silva, Manfred Schwartz, Patrícia M. Souza, Ian Garrard, Galba M. Campos-Takaki and Elias B. Tambourgi --- Chapter 15: Reduction in the Sulfur Content of Fossil Fuels by Cunninghamella elegans (UCP 0596) to Dibenzothiophene Compound by Patrícia Mendes de Souza, Thayse Alves de Lima e Silva, Marcos Antonio Barbosa Lima, Luciana de Oliveira Franco, Manfred Schwartz, Paulo Henrique da Silva, Lúcia Roberta Barbosa, Aline Elesbão do Nascimento, Kaoru Okada and Galba Maria de Campos- Takaki --- Chapter 16: Microbial Bioremediation of Petroleum Hydrocarbon– Contaminated Marine Environments by Mouna Mahjoubi, Simone Cappello, Yasmine Souissi, Atef Jaouani and Ameur Cherif --- Chapter 17: Petroleum Degradation: Promising Biotechnological Tools for Bioremediation by Maddela Naga Raju and Laura Scalvenzi --- Chapter 18: Organic Contaminants in Refinery Wastewater: Characterization and Novel Approaches for Biotreatment by Taghreed Al-Khalid and Muftah H. El-Naas --- Chapter 19: Analytical Methods for Polycyclic Aromatic Hydrocarbons and their Global Trend of Distribution in Water and Sediment: A Review by Abiodun Olagoke Adeniji, Omobola Oluranti Okoh and Anthony Ifeanyi Okoh
    Pages: Online-Ressource (440 Seiten)
    ISBN: 9789535138105
    Language: English
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  • 17
    Unknown
    Rijeka : InTech
    Keywords: risk assessment ; risk avoiding ; risk reduction ; risk control ; natural hazards ; natural disasters
    Description / Table of Contents: Chapter 1: Landslides: Methodology to Select Stabilizing Construction Works by Oscar Andrés Cuanalo Campos --- Chapter 2: Natural Risk Management to Protect Critical Infrastructures: A Model for Active Learning by Catalin Cioaca, Vasile Prisacariu and Mircea Boscoianu --- Chapter 3: Earthquake Culture: A Significant Element in Earthquake Disaster Risk Assessment and Earthquake Disaster Risk Management by Michaela Ibrion --- Chapter 4: Mexico City after September 2017: Are We Building the Right City? by Milton Montejano-Castillo and Mildred Moreno-Villanueva --- Chapter 5: On Risk and Reliability Studies of Climate-Related Building Performance by Krystyna Pietrzyk and Ireneusz Czmoch --- Chapter 6: Machinery Safety Requirements as an Effective Tools for Operational Safety Management by Hana Pacaiova --- Chapter 7: Integrated Risk Assessment of Safety, Security, and Safeguards by Mitsutoshi Suzuki --- Chapter 8: Practical Propagation of Trust in Risk Management Systems by Kristian Helmholt, Matthijs Vonder, Bram Van Der Waaij, Elena Lazovik and Niels Neumann --- Chapter 9: Risk Assessment for Collaborative Operation: A Case Study on Hand-Guided Industrial Robots by Varun Gopinath, Kerstin Johansen and Johan Ölvander --- Chapter 10: Managing Technogenic Risks with Stakeholder Cooperation by Riitta Molarius --- Chapter 11: Risks, Safety and Security in the Ecosystem of Smart Cities by Stig O. Johnsen --- Chapter 12: Implementation of Basel and Solvency Risk Assessment Standards in Banks and Insurance Companies of Southeastern Europe Countries by Safet Kozarevic, Emira Kozarevic, Pasqualina Porretta and Fabrizio Santoboni --- Chapter 13: Environmental Health Surveillance for Health Risk Assessment Following Radionuclide Release by Robert Wålinder --- Chapter 14: Challenges and Perspectives of the Risk Assessment of the Genetic Susceptibility to Cancer in the Next-Generation Sequencing Era by Israel Gomy --- Chapter 15: Risk Assessment of Heavy Metals Pollution in Urban Environment by Gevorg Tepanosyan, Lilit Sahakyan, David Pipoyan and Armen Saghatelyan --- Chapter 16: Pharmaceuticals and Personal Care Products: Risks, Challenges, and Solutions by Zakiya Hoyett --- Chapter 17: Estimation of PM2.5 Trajectory Using Atmospheric Dispersion Models and GIS in the Tokyo Metropolitan Area by Kayoko Yamamoto and Zhaoxin Yang --- Chapter 18: Risk Assessment and Prediction of Aflatoxin in Agro-Products by Peiwu Li, Xiaoxia Ding, Yizhen Bai, Linxia Wu, Xiaofeng Yue and Liangxiao Zhang --- Chapter 19: Risk Management in Complex Organisations by Andrea Antonucci
    Pages: Online-Ressource (384 Seiten)
    ISBN: 9789535137993
    Language: English
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  • 18
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    Rijeka : InTech
    Keywords: VLSI ; Very-Large-Scale Integration
    Description / Table of Contents: Chapter 1: Introductory Chapter: VLSI by Kim Ho Yeap and Humaira Nisar --- Chapter 2: Transistor Degradations in Very Large-Scale-Integrated CMOS Technologies by Chang Yeol Lee --- Chapter 3: Low Power Design Methodology by Vithyalakshmi Natarajan, Ashok Kumar Nagarajan, Nagarajan Pandian and Vinoth Gopi Savithri --- Chapter 4: High-purity Refractory Metals for Thin Film Metallization of VLSI by Vadim Glebovsky --- Chapter 5: Operational Amplifier Design in CMOS at Low-Voltage for Sensor Input Front-End Circuits in VLSI Devices by Muhaned Zaidi, Ian Grout and Abu Khari A’ain --- Chapter 6: Design of High-Order CMOS Analog Notch Filter with 0.18 μm CMOS Technology by Kittipong Tripetch
    Pages: Online-Ressource (160 Seiten)
    ISBN: 9789535138648
    Language: English
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  • 19
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    Rijeka : InTech
    Keywords: Lagerstättenkunde ; oil resources ; gas resources ; drilling technology
    Description / Table of Contents: 1. Proposing a Patent Information Approach for Identifying Technological Trends in the Brazilian Upstream Oil and Gas Industry / By Gabriel Cavalheiro, Mariana Brandao and Saulo Rocha --- 2. Intelligent Drilling and Coring Technologies for Unmanned Interplanetary Exploration / By Junyue Tang, Qiquan Quan, Shengyuan Jiang, Jieneng Liang and Zongquan Deng --- 3. Making the Connection for Well Control on Floaters: Evolving Design Rationales for BOP Control Systems / By Paul A. Potter --- 4. Bio-Based Oil Drilling Fluid Improvements through Carbon- Based Nanoparticle Additives / By Yee Ho Chai, Suzana Yusup, Vui Soon Chok and Sonny Irawan --- 5. Solid Control System for Maximizing Drilling / By Sonny Irawan and Imros B. Kinif --- 6. Rate of Penetration Prediction Utilizing Hydromechanical Specific Energy / By Omogbolahan Ahmed, Ahmed Adeniran and Ariffin Samsuri --- 7. Drilling Performance Optimization Based on Mechanical Specific Energy Technologies / By Xuyue Chen, Jin Yang and Deli Gao --- 8. New Development of Air and Gas Drilling Technology / By Jun Li, Yulong Yang, Boyun Guo and Gonghui Liu
    ISBN: 9781789843040
    Language: English
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  • 20
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    Rijeka : InTech
    Keywords: soil science ; soil fertility ; waste
    Description / Table of Contents: 1. Organic Fertilizers and Nutrient Recycling from Diluted Waste Streams / by Bente Foereid --- 2. Olive-Pressed Solid Residues as a Medium for Growing Mushrooms and Increasing Soil Fertility / by Hani Mohamed Awad Abdelzaher, Haifa Abdulaziz S. Alhaithloul and Shaima Mohamed Nabil Moustafa --- 3. Composing of Municipal Solid Waste and Its Use as Fertilizer / by Muhammad Khalid Iqbal --- 4. Relationship of Agronomic Practices to Soil Nitrogen Dynamics / by Congming Zou, Robert C Pearce, John H Grove, Yan Li, Xiaodong Hu, Jie Chen, Junying Li and Yan Jin --- 5. Fostering Fertilizer Use and Welfare Distribution in Tanzania: Implications for Policy and Practice / by Lutengano Mwinuka
    ISBN: 9781789846799
    Language: English
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  • 21
    Keywords: spatial analysis ; geographic information systems ; GIS
    Description / Table of Contents: 1. Introductory Chapter: Spatial Analysis, Modelling, and Planning / by José António Tenedório and Jorge Rocha --- 2. One World, One Health Challenge: The Holistic Understanding of Rickettsiosis Integrating Multi-Criteria Analysis Techniques and Spatial Statistics / by Diego Montenegro, Ana Paula da Cunha, Ingrid Machado, Liliane Duraes, Stefan Vilges de Oliveira, Marcel Pedroso, Gilberto S. Gazêta and Reginaldo P. Brazil --- 3. Spatial Analysis of Bifenthrin Sediment and Water Concentrations in California Waterbodies from 2001 to 2017 / by Lenwood W. Hall and Ronald D. Anderson --- 4. Absolute Density Measures Estimation Functions with Very High Resolution Satellite Images / by Ana Cristina Gonçalves and Adélia M. O. Sousa --- 5. Evaluating the Effectiveness of CCTV in Baltimore, Maryland / by Brian Ways and Brooks C. Pearson --- 6. The Use of Photos of the Social Networks in Shaping a New Tourist Destination: Analysis of Clusters in a GIS Environment / by Hélder Tiago da Silva Lopes, Paula Cristina Almeida Cadima Remoaldo and Vitor Ribeiro --- 7. Modelling Driving Forces of Urban Growth with Fuzzy Sets and GIS / by Khalid Al-Ahmadi --- 8. Quantification and Prediction of Land Consumption and Its Climate Effects in the Rhineland Metropolitan Area Based on Multispectral Satellite Data and Land-Use Modelling 1975–2030 / by Andreas Rienow, Nora Jennifer Schneevoigt and Frank Thonfeld --- 9. Fusion Study of Geography and Environmental Engineering / by Toshiaki Ichinose --- 10. Generating Reality with Geosimulation Models: An Agent-Based Social-Spatial Network Modelling Perspective / by Andreas Koch --- 11. Formal Urban Dynamics, Policy and Implications on Urban Planning: Perspectives on Kampala, Uganda / by John J. Williams and Fred Bidandi --- 12. Risk Analysis and Land Use Planning / by Valentina Svalova --- 13. Political Economy and the Work of Kenneth Arrow / by Norman Schofield
    ISBN: 9781789842401
    Language: English
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  • 22
    Keywords: clay ; clay minerals ; civil engineering ; medical applications
    Description / Table of Contents: 1. Montmorillonite: An Introduction to Properties and Utilization / by Faheem Uddin --- 2. Recycling of Steelmaking Plant Wastes in Clay Bricks / by Carlos Maurício F. Vieira, Lucas Fonseca Amaral and Sergio N. Monteiro --- 3. Mineralogical and Chemical Characteristics of Raw and Modified Clays and Their Application in Arsenic and Fluoride Removal: Review / by Mugera W. Gitari and Rabelani Mudzielwana --- 4. Polymer-Clay Nanocomposites for Corrosion Protection / by Abdullah Al-Shahrani, Ihsan Taie, Aziz Fihri and Gasan Alabedi --- 5. The Importance of Clay in Geotechnical Engineering / by Nazile Ural --- 6. Clay Grouting Mechanisms and Applications / by Wen-Chieh Cheng --- 7. Calcium Phosphate/Clay Nanotube Bone Cement with Enhanced Mechanical Properties and Sustained Drug Release / by Udayabhanu Jammalamadaka, Karthik Tappa and David K. Mills --- 8. The Effect of Clay Type on the Physicochemical Properties of New Hydrogel Clay Nanocomposites / by Tatiana Munteanu, Claudia Mihaela Ninciuleanu, Ioana Catalina Gifu, Bogdan Trica, Elvira Alexandrescu, Augusta Raluca Gabor, Silviu Preda, Cristian Petcu, Cristina Lavinia Nistor, Sabina Georgiana Nitu and Raluca Ianchis --- 9. Development of Clay Nanoparticles Toward Bio and Medical Applications / by Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Sarvenaz Salahi, Mojgan Hosseini, Ali Mohammad Amani and Aziz Babapoor
    ISBN: 9781789237290
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  • 23
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    Rijeka : InTech
    Keywords: risk management ; natural disasters ; engineering ; construction
    Description / Table of Contents: 1. An Insight into the Process, Tools and Techniques for Construction Risk Management / by Onengiyeofori O. Odimabo, Chike F. Oduoza and Subashini Suresh --- 2. Big Data as a Project Risk Management Tool / by Jarosław Górecki --- 3. Product Life Cycle Risk Management / by Jan Machac, Frantisek Steiner and Jiri Tupa --- 4. Critical Success Factors for Effective Risk Management / by Geraldine J. Kikwasi --- 5. Construction Supply Chain Resilience in Catastrophic Events / by Yasangika Gayani Sandanayake, Tharaka Bandara Dissanayake and Chike Oduoza --- 6. Risk Management in Indonesia Construction Project: A Case Study of a Toll Road Project / by Mochammad Agung Wibowo, Jati Utomo Dwi Hatmoko and Asri Nurdiana --- 7. Risk Management to Enhance Performance in the Construction SME Sector; Theory and Case Study / by Jan Simota, Jiri Tupa* and Frantisek Steiner --- 8. Leadership Initiatives for Health and Safety Risk Management Systems in a Small Construction Company: A Case Study / by Subashini Suresh, Chike Oduoza and Suresh Renukappa --- 9. Landslide Risk Management for Urbanized Territories / by Valentina Svalova
    ISBN: 9781789846010
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  • 24
    Keywords: risk management ; natural disasters ; floods ; disasters ; Tsunami
    Description / Table of Contents: 1. Vulnerability, Urban Design and Resilience Management / by Bruno Barroca --- 2. Index of Proportional Risk (IRP) Flood-Risk Assessment Model and Comparison to Collected Data / by Luca Franzi, Gennaro Bianco, Alessandro Pezzoli and Angelo Besana --- 3. Insight into the Correlation between Land Subsidence and the Floods in Regions of Indonesia / by Heri Andreas, Hasanuddin Z. Abidin, Irwan Gumilar, Teguh P. Sidiq, Dina A. Sarsito and Dhota Pradipta --- 4. Assessing the Impact of Land Use Changes and Rangelands and Forest Degradation on Flooding Using Watershed Modeling System / by Nafise Moghadasi, Iman Karimirad and Vahedberdi Sheikh --- 5. Extent of 2014 Flood Damages in Chenab Basin Upper Indus Plain / by Shakeel Mahmood and Razia Rani --- 6. Towards the Reduction of Vulnerabilities and Risks of Climate Change in the Community-Based Tourism, Namibia / by Selma Lendelvo, Margaret N. Angula, Immaculate Mogotsi and Karl Aribeb --- 7. Using the Monoplotting Technique for Documenting and Analyzing Natural Hazard Events / by Conedera Marco, Bozzini Claudio, Ryter Ueli, Bertschinger Thalia and Krebs Patrik --- 8. Tsunami Hazard Assessment for the Hokuriku Region, Japan: Toward Disaster Mitigation for Future Earthquakes / by Michihiro Ohori, Yuri Masukawa and Keisuke Kojima --- 9. Disaster Mitigation Model of Eruption Based on Local Wisdom in Indonesia / by Eko Hariyono and Solaiman Liliasari
    ISBN: 9781789848212
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  • 25
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    Rijeka : InTech
    Keywords: mineralogy ; economic geology ; mining engineering ; environmental impacts ; mining industry
    Description / Table of Contents: Chapter 1: Petrology, Geochemistry and Mineralogy of Greisens Associated with Tin-Tungsten Mineralisation: Hub Stock Deposit at Krásno–Horní Slavkov Ore District, Czech Republic by Miloš René --- Chapter 2: Zechstein-Kupferschiefer Mineralization Reconsidered as a Product of Ultra-Deep Hydrothermal, Mud-Brine Volcanism by Stanley B. Keith, Volker Spieth and Jan C. Rasmussen --- Chapter 3: Lead-, Zinc-, and Iron-Sulfide Mineralization from Northern Iraq by Ali Ismail Al-Juboury, Waleed S. Shingaly, Elias M. Elias and Mohsin M. Ghazal --- Chapter 4: Geology, Textural Study, Ore Genesis and Processing of the Tabuaço Tungsten Deposit (Northern Portugal) by Yann Foucaud, Bénédicte Lechenard, Philippe Marion, Inna Filippova and Lev Filippov --- Chapter 5: Lead Isotopes as Tracers of Metal Sources and Timing of the Carbonate-Hosted Pb-Zn Deposits in the Nappes Zone, Northern Tunisia by Nejib Jemmali and Fouad Souissi --- Chapter 6: Trace Elements in Coal Gangue: A Review by Shaoqing Guo --- Chapter 7: Mineralization: Evidence from Fission Track Thermochronology by Wanming Yuan and Ke Wang --- Chapter 8: Statistical Approach to Mineral Engineering and Optimization by Mehmet Deniz Turan --- Chapter 9: Expected Return on Capital in Mining Industry by Aneta Michalak
    Pages: Online-Ressource (224 Seiten)
    ISBN: 9789535137498
    Language: English
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  • 26
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    Rijeka : InTech
    Keywords: biogeography ; biodiversity crisis ; climate change ; water issues ; sustainable agriculture
    Description / Table of Contents: Chapter 1: Introductory Chapter: The Main Directions and Tasks of Pure and Applied Biogeography in Solving the Global Problems of Our Time by Levente Hufnagel --- Chapter 2: Are Historical Biogeographical Events Able to Promote Biological Diversification? by Julián A. Velasco --- Chapter 3: Ecological Responses to Climate Change at Biogeographical Boundaries by Melinda Pálinkás --- Chapter 4: A Synopsis of Global Mapping of Freshwater Habitats and Biodiversity: Implications for Conservation by Ryan A. McManamay, Natalie A. Griffiths, Christoper R. DeRolph and Brenda M. Pracheil --- Chapter 5: Plant Antiherbivore Defense in Diverse Environments by Alina Morquecho-Contreras, Carmen Zepeda-Gómez and Hermilo Sánchez-Sánchez --- Chapter 6: Vachellia (Acacia) karroo Communities in South Africa: An Overview by Mamokete Dingaan and Pieter J. du Preez --- Chapter 7: Ecological Biogeography of West Usambara Mountains: A Study on the Influence of Abiotic Factors to Spatial Distribution of Plant and Animal Species by Joel Loitu Meliyo, Kenneth F.G. Masuki, Balthazar M. Msanya, Didas N. Kimaro and Loth S. Mulungu
    Pages: Online-Ressource (176 Seiten)
    ISBN: 9789535137559
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  • 27
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    Rijeka : InTech
    Keywords: time series analysis ; TSA ; data science ; forecasting
    Description / Table of Contents: Chapter 1: Introductory Chapter: Time Series Analysis (TSA) for Anomaly Detection in IoT by Nawaz Mohamudally --- Chapter 2: Anxiety, Worry and Fear: Quantifying the Mind Using EKG Time Series Analysis by Toru Yazawa --- Chapter 3: Agricultural Monitoring in Regional Scale Using Clustering on Satellite Image Time Series by Renata Ribeiro do Valle Gonçalves, Jurandir Zullo Junior, Bruno Ferraz do Amaral, Elaine Parros Machado Sousa and Luciana Alvim Santos Romani --- Chapter 4: Volatility Parameters Estimation and Forecasting of GARCH(1,1) Models with Johnson’s SU Distributed Errors by Mohammed Elamin Hassan, Henry Mwambi and Ali Babikir --- Chapter 5: Generation of Earth’s Surface Three-Dimensional (3-D) Displacement Time-Series by Multiple-Platform SAR Data by Antonio Pepe --- Chapter 6: Time Series and Renewable Energy Forecasting by Mahmoud Ghofrani and Musaad Alolayan --- Chapter 7: Modeling Nonlinear Vector Time Series Data by Jiancheng Jiang and Sha Yu --- Chapter 8: Symbolic Time Series Analysis and Its Application in Social Sciences by Wiston Adrián Risso --- Chapter 9: State-Space Models for Binomial Time Series with Excess Zeros by Fan Tang and Joseph E. Cavanaugh --- Chapter 10: Ensemble Prediction of Stream Flows Enhanced by Harmony Search Optimization by Milan Cisty and Veronika Soldanova
    Pages: Online-Ressource (178 Seiten)
    ISBN: 9789535137436
    Language: English
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  • 28
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    Rijeka : InTech
    Keywords: graph theory ; graphs
    Description / Table of Contents: Chapter 1: Spreading Information in Complex Networks: An Overview and Some Modified Methods by Reji Kumar Karunakaran, Shibu Manuel and Edamana Narayanan Satheesh --- Chapter 2: An Example Usage of Graph Theory in Other Scientific Fields: On Graph Labeling, Possibilities and Role of Mind/Consciousness by Auparajita Krishnaa --- Chapter 3: Graph-Based Decision Making in Industry by Izabela Kutschenreiter-Praszkiewicz --- Chapter 4: Governance Modeling: Dimensionality and Conjugacy by Pierre Mazzega, Claire Lajaunie and Etienne Fieux --- Chapter 5: Modeling Rooted in-Trees by Finite p-Groups by Daniel C. Mayer --- Chapter 6: Monophonic Distance in Graphs by P. Titus and A.P. Santhakumaran --- Chapter 7: Spectra and Quantum Transport on Graphs by Victor Chulaevsky --- Chapter 8: Math Words and Their Dendrograms by Francisco Casanova-del-Angel
    Pages: Online-Ressource (196 Seiten)
    ISBN: 9789535137733
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  • 29
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    Rijeka : InTech
    Keywords: GPS ; Global Positioning System ; GNSS ; Global Navigation Satellite System ; GLONASS
    Description / Table of Contents: 1. Review on Sparse-Based Multipath Estimation and Mitigation: Intense Solution to Counteract the Effects in Software GPS Receivers / By Ganapathy Arul Elango, B. Senthil Kumar, Ch.V.M.S.N. Pavan Kumar and C. Venkatramanan --- 2. Integrity Monitoring: From Airborne to Land Applications / By Davide Imparato, Ahmed El-Mowafy and Chris Rizos --- 3. GPS Modeling of the Ionosphere Using Computer Neural Networks / By Daniel Okoh --- 4. GNSS Error Sources / By Malek Karaim, Mohamed Elsheikh and Aboelmagd Noureldin --- 5. GNSS Application in Retrieving Sea Wind Speed / By Dongkai Yang and Feng Wang --- 6. GNSSs, Signals, and Receivers / By Mohamed Tamazin, Malek Karaim and Aboelmagd Noureldin --- 7. Applications of GNSS Slant Path Delay Data on Meteorology at Storm Scales / By Takuya Kawabata and Yoshinori Shoji --- 8. Antennas and Front-End in GNSS / By Korkut Yegin --- 9. Ionosphere Variability in Low and Mid-Latitudes of India Using GPS-TEC Estimates from 2002 to 2016 / By Sridevi Jade and Shrungeshwara T.S.
    ISBN: 9781789232158
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  • 30
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    Rijeka : InTech
    Keywords: radar ; signal processing ; antenna ; SAR ; Synthetic Aperture Radar ; SAR imaging
    Description / Table of Contents: 1. Waveform Design and Related Processing for Multiple Target Detection and Resolution / By Gaspare Galati and Gabriele Pavan --- 2. Space-Time Transmit-Receive Design for Colocated MIMO Radar / By Guolong Cui, Xianxiang Yu and Lingjiang Kong --- 3. Waveform Design for MIMO Radar and SAR Application / By Stéphane Méric and Jean-Yves Baudais --- 4. A 94-GHz Frequency Modulation Continuous Wave Radar Imaging and Motion Compensation / By Jiwoong Yu, Sumin Kim and Min-Ho Ka --- 5. Analysis of Coastal Areas Using SAR Images: A Case Study of the Dutch Wadden Sea Region / By Corneliu Octavian Dumitru, Gottfried Schwarz, Daniela Espinoza- Molina, Mihai Datcu, Herman Hummel and Christiaan Hummel --- 6. Adaptive Clutter Cancellation Techniques for Passive Radars / By Tamás Pető and Rudolf Seller --- 7. Sense Smart, Not Hard: A Layered Cognitive Radar Architecture / By Stefan Brüggenwirth, Marcel Warnke, Christian Bräu, Simon Wagner, Tobias Müller, Pascal Marquardt and Fernando Rial --- 8. Representation of Radar Micro-Dopplers Using Customized Dictionaries / By Shobha Sundar Ram --- 9. Adaptive Coding, Modulation and Filtering of Radar Signals / By Moutaman Mirghani Daffalla and Ahmed Awad Babiker --- 10. Bispectrum- and Bicoherence-Based Discriminative Features Used for Classification of Radar Targets and Atmospheric Formations / By Alexander Totsky and Karen Egiazarian
    ISBN: 9781789231212
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  • 31
    Keywords: aerospace ; microgravity ; space ethics ; aviation medicine
    Description / Table of Contents: 1. Reimagining Icarus: Ethics, Law and Policy Considerations for Commercial Human Spaceflight / By Sara M. Langston --- 2. Basic Methodology for Space Ethics / By Tony Milligan --- 3. From the Individual to the Cultural Space Group / By Carole Tafforin --- 4. Acute and Chronic Effects of Hypobaric Exposure upon the Brain / By Paul Sherman and John Sladky --- 5. Spaceflight Induced Changes in the Central Nervous System / By Alex P. Michael --- 6. The Effect of Gravity on the Nervous System / By Florian P.M. Kohn, Claudia Koch and Ramona Ritzmann --- 7. Spaceflight: Immune Effects and Nutritional Countermeasure / By Anil D Kulkarni, Marie-Francoise Doursout, Asmita Kulkarni, Alamelu Sundaresan, Takehito Miura, Koji Wakame and Hajime Fujii --- 8. Countermeasure Development for Lumbopelvic Deconditioning in Space / By Andrew Winnard, Dorothee Debuse and Nick Caplan --- 9. Tumor Cells in Microgravity / By Jun Chen --- 10. Plants in Space / By Bratislav Stankovic --- 11. Approaches to Assess the Suitability of Zooplankton for Bioregenerative Life Support Systems / By Miriam Knie, Bernard Wolfschoon Ribeiro, Jessica Fischer, Burkhard Schmitz, Kay Van Damme, Ruth Hemmersbach, Donat-P. Häder and Christian Laforsch --- 12. Are We Alone? The Search for Life on Mars and Other Planetary Bodies / By Stephanie A. Smith, Andrzej Paszczynski and Susan E. Childers --- 13. Exploring the Stratosphere: What We Missed by Shooting for the Moon / By Laura Galdamez --- 14. The Mortality of Space Explorers / By Robert J. Reynolds and Steven M. Day
    ISBN: 9781789232219
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  • 32
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    Rijeka : InTech
    Keywords: geophysics ; seismicity ; seismic diffraction ; tectonics
    Description / Table of Contents: 1. Three–Dimensional Seismic Diffraction Imaging for Detecting Near-Surface Inhomogeneities / By Shemer Keydar, Vladimir Shtivelman and Avner Arzi --- 2. Measurement of Rotational Events in Regions Prone to Seismicity: A Review / By Leszek R. Jaroszewicz, Anna Kurzych, Krzysztof P. Teisseyre and Zbigniew Krajewski --- 3. Inversion and Interpretation of Magnetic Anomaly in the Presence of Significant Remanence and Self-Demagnetization Based on Magnetic Amplitude / By Shuang Liu and Xiangyun Hu --- 4. Basement Tectonics and Fault Reactivation in Alberta Based on Seismic and Potential Field Data / By Eneanwan Ekpo, David Eaton and Ronald Weir --- 5. Characterization of Hydrocarbon-Contaminated Sites Based on Geoelectrical Methods of Geophysical Exploration / By Omar Delgado-Rodríguez, Vladimir Shevnin, Héctor Peinado- Guevara and María Ladrón de Guevara-Torres --- 6. Characterization of Seismic Responses in Mexico City Using Hilbert-Huang Transform / By Silvia Raquel García Benítez and Leonardo Alcántara Nolasco --- 7. Dynamics of the Early Stage of Formation of the Earth’s-Moon System / By Yurie Khachay, Olga Hachay and Alexander Antipin --- 8. Geoelectrical Sounding and Imaging over the Central Zone of Panama / By Alexis Mojica
    ISBN: 9781789230215
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  • 33
    Unknown
    Rijeka : InTech
    Keywords: seismic waves ; gravity waves
    Description / Table of Contents: 1. Novel Waveguide Technologies and Its Future System Applications / By Shotaro Ishino --- 2. Properties and Applications of Love Surface Waves in Seismology and Biosensors / By Piotr Kiełczyński --- 3. Dyakonov Surface Waves: Anisotropy-Enabling Confinement on the Edge / By Carlos J. Zapata-Rodríguez, Slobodan Vuković, Juan J. Miret, Mahin Naserpour and Milivoj R. Belić --- 4. Measurement of Sea Wave Spatial Spectra from High- Resolution Optical Aerospace Imagery / By Valery G. Bondur and Alexander B. Murynin --- 5. Electromagnetic Polarization: A New Approach on the Linear Component Method / By Jobson de Araújo Nascimento, Regina Maria De Lima Neta, José Moraes Gurgel Neto, Adi Neves Rocha and Alexsandro Aleixo Pereira Da Silva --- 6. Modal Phenomena of Surface and Bulk Polaritons in Magnetic- Semiconductor Superlattices / By Vladimir R. Tuz, Illia V. Fedorin and Volodymyr I. Fesenko --- 7. Video Measurements and Analysis of Surface Gravity Waves in Shallow Water / By Charles R. Bostater Jr, Bingyu Yang and Tyler Rotkiske
    ISBN: 9781789230635
    Language: English
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  • 34
    Keywords: Uranium ; nuclear technology
    Description / Table of Contents: 1. History of Uranium Mining in Central Europe / By Miloš René --- 2. Safety and Economics of Uranium Utilization for Nuclear Power Generation / By Yuji Fukaya --- 3. Shear Zone-Hosted Uranium Deposits of the Bohemian Massif (Central European Variscan Belt) / By Miloš René --- 4. Uranium in Poland: Resources and Recovery from Low-Grade Ores / By Katarzyna Kiegiel, Agnieszka Miskiewicz, Dorota Gajda, Sylwester Sommer, Stanislaw Wolkowicz and Grazyna Zakrzewska- Koltuniewicz --- 5. Remotely Monitoring Uranium-Enrichment Plants with Detection of Gaseous Uranium Hexafluoride and HF Using Lidar / By Gholamreza Shayeganrad --- 6. Thermodynamics and Separation Factor of Uranium from Fission Products in “Liquid Metal-Molten Salt” System / By Valeri Smolenski, Alena Novoselova, Alexander Bychkov, Vladimir Volkovich, Yana Luk’yanova and Alexander Osipenko --- 7. Chemical Thermodynamics of Uranium in the Soil Environment / By Michael Thomas Aide
    ISBN: 9781789231199
    Language: English
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  • 35
    Unknown
    Rijeka : InTech
    Keywords: GIS ; geospatial data ; GPS ; GNSS ; navigation systems
    Description / Table of Contents: 1. Introduction to Navigation Systems / By Junghyun Lee --- 2. A Review: Remote Sensing Sensors / By Lingli Zhu, Juha Suomalainen, Jingbin Liu, Juha Hyyppä, Harri Kaartinen and Henrik Haggren --- 3. Validation and Quality Assessment of Sea Levels from SARAL/ AltiKa Satellite Altimetry over the Marginal Seas at the Southeast Asia / By Noor Nabilah Abdullah and Nurul Hazrina Idris --- 4. Geospatial Analysis for Irrigated Land Assessment, Modeling and Mapping / By Olumuyiwa Idowu Ojo and Francois Ilunga --- 5. The Use of GNSS GPS Technology for Offshore Oil and Gas Platform Subsidence Monitoring / By Heri Andreas, Hasanuddin Z. Abidin, Irwan Gumilar, Dina A. Sarsito and Dhota Pradipta --- 6. The Use of MODIS Images to Quantify the Energy Balance in Different Agroecosystems in Brazil / By Antônio Heriberto de Castro Teixeira, Janice F. Leivas, Carlos C. Ronquim and Gustavo Bayma-Silva --- 7. Earth Observation for Urban Climate Monitoring: Surface Cover and Land Surface Temperature / By Zina Mitraka and Nektarios Chrysoulakis --- 8. Pre-earthquake Anomaly Detection and Assessment through Lineament Changes Observation Using Multi-temporal Landsat 8-OLI Imageries: Case of Gorkha and Imphal / By Biswajit Nath, Zheng Niu and Shukla Acharjee --- 9. Optimization of an Earth Observation Data Processing and Distribution System / By Jonathan Becedas, María del Mar Núñez and David González --- 10. Multi-purposeful Application of Geospatial Data / By Chattopadhyay Nabansu, Chandras Swati and Tidke Nivedita
    ISBN: 9781789231090
    Language: English
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  • 36
    Unknown
    Rijeka : InTech
    Keywords: metrology ; measurement
    Description / Table of Contents: 1. Introductory Chapter: Metrology / by Anil Akdogan --- 2. Methods for Evaluation of Measurement Uncertainty / by Jailton Carreteiro Damasceno and Paulo R.G. Couto --- 3. Variational Calibration / by Michael Surdu --- 4. Measuring ‘Big G’, the Newtonian Constant, with a Frequency Metrology Approach / by Andrea De Marchi --- 5. Optical Radiation Metrology and Uncertainty / by Manal A. Haridy and Affia Aslam --- 6. A New Statistical Tool Focused on Metrological Tasks / by Eugene Charnukha
    ISBN: 9781789235944
    Language: English
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  • 37
    Keywords: sustainability ; energy ; renewable energy
    Description / Table of Contents: 1. A Review of Air Pollution Control Policy Development and Effectiveness in China / by Ying Li and Ke Chen --- 2. Historical Drivers of Energy Infrastructure Change in Nigeria (1800–2015) / by Norbert Edomah --- 3. Towards a Sustainable Energy Future for Sub-Saharan Africa / by Shadreck Mubiana Situmbeko --- 4. Electric Vehicle Promotion Policy in Taiwan / by Li-Min Cheng --- 5. Clean Energy Management / by Ali Samadiafshar and Atiyye Ghorbani --- 6. Renewable Energy of Biogas Through Integrated Organic Cycle System in Tropical System / by Ambar Pertiwiningrum, Cahyono Agus DK and Margaretha Arnita Wuri
    ISBN: 9781789235777
    Language: English
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  • 38
    Keywords: climatic change ; agriculture
    Description / Table of Contents: 1. Adaptation in Agriculture / by Panit Arunanondchai, Chengcheng Fei and Bruce A. McCarl --- 2. Climate Adaptive Agricultural Innovation in Nepal: Prospects and Challenges / by Dhanej Thapa, Yuba Raj Subedi and Hemant Ojha --- 3. Naturally Available Genetic Adaptation in Common Bean and Its Response to Climate Change / by Andrés J. Cortés and Matthew W. Blair --- 4. Mitigation of the Negative Impact of Warming on the Coffee Crop: The Role of Increased Air [CO2] and Management Strategies / by Danielly Dubberstein, Weverton P. Rodrigues, José N. Semedo, Ana P. Rodrigues, Isabel P. Pais, António E. Leitão, Fábio L. Partelli, Eliemar Campostrini, Fernando Reboredo, Paula Scotti-Campos, Fernando C. Lidon, Ana I. Ribeiro-Barros, Fábio M. DaMatta and José C. Ramalho --- 5. Agricultural Management Impact on Greenhouse Gas Emissions / by Upendra M. Sainju --- 6. Low Carbon Technologies for Agriculture in Dryland: Brazilian Experience / by Vanderlise Giongo, Alessandra Monteiro Salviano, Francislene Angelotti, Tatiana Taura, Luiz Fernando Carvalho Leite and Tony Jarbas Ferreira Cunha --- 7. Pepper Crop under Climate Change: Grafting as an Environmental Friendly Strategy / by Consuelo Penella and Angeles Calatayud --- 8. Bringing Climate Smart Agriculture to Scale: Experiences from the Water Productivity Project in East and Central Africa / by Kizito Kwena, Fitih Ademe, Joseph Serge, Nezeghty Asmerom, Bernard Musana, Razaka Razakamiaramanana, Reuben Ruttoh, Hezron Mogaka, Assefa Dereje, Kifle Woldearegey, Anthony Esilaba and Rosemary Emongor --- 9. Climate Control in Mediterranean Greenhouses / by A. Nafi Baytorun and Zeynep Zaimoglu
    ISBN: 9789535138969
    Language: English
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  • 39
    Unknown
    Rijeka : InTech
    Keywords: seismology ; cryoseismology ; seismic detection ; Arctic ; Antarctic
    Description / Table of Contents: 1. Introduction: Progress of Seismology in Polar Region / by Masaki Kanao. https://doi.org/10.5772/intechopen.78550 --- 2. An Overview of Seismological Projects during the International Polar Year / by Masaki Kanao. https://doi.org/10.5772/intechopen.78551 --- 3. Seismological Studies on the Deep Interiors of the Earth Viewed from the Polar Region / by Masaki Kanao. https://doi.org/10.5772/intechopen.78552 --- 4. Structural Studies on the Earth’s Crust, Plates, and the Ice Sheet in the Polar Region / by Masaki Kanao. https://doi.org/10.5772/intechopen.78553 --- 5. Studies on Seismicity in the Polar Region / by Masaki Kanao. https://doi.org/10.5772/intechopen.78554 --- 6. A Decade of Advances in Cryoseismology / by Masaki Kanao. https://doi.org/10.5772/intechopen.78555 --- 7. Seismic Detection in the Inland Plateau of East Antarctica / by Masaki Kanao. https://doi.org/10.5772/intechopen.78556 --- 8. A New Trend in Cryoseismology: A Proxy for Detecting the Polar Surface Environment / by Masaki Kanao. https://doi.org/10.5772/intechopen.78557 --- 9. Interactions among Multispheres of the Earth’s System and Polar Regions / by Masaki Kanao. https://doi.org/10.5772/intechopen.78558 --- 10. Summary: Global Seismology and the Polar Region / by Masaki Kanao. https://doi.org/10.5772/intechopen.78559
    ISBN: 9781789235692
    Language: English
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  • 40
    Keywords: gravity
    Description / Table of Contents: Chapter 1: Gravity Data Interpretation Using Different New Algorithms: A Comparative Study by Khalid S. Essa and Mahmoud Elhussein --- Chapter 2: 3D Modeling and Inversion of Gravity Data in Exploration Scale by Hongzhu Cai, Bin Xiong and Yue Zhu --- Chapter 3: Microgravity and Its Applications in Geosciences by Hakim Saibi --- Chapter 4: Application of BEMD in Extraction of Regional and Local Gravity Anomalies Reflecting Geological Structures Associated with Mineral Resources by Yongqing Chen, Binbin Zhao, Jingnning Huang and Lina Zhang --- Chapter 5: Identification of Gravity Lineaments for Water Resources in the Crystalline Massif of Hoggar (South of Algeria) by Abdeslam Abtout, Hassina Boukerbout, Boualem Bouyahiaoui and Farida Boukercha --- Chapter 6: Gravity Application for Delineating Subsurface Structures at Different Localities in Egypt by Sultan Awad Sultan Araffa --- Chapter 7: Gravity in Heat Pipe Technology by Patrik Nemec --- Chapter 8: Analysis of the Influence of Fish Behavior on the Hydrodynamics of Net Cage by Tiao-Jian Xu, Ming-Fu Tang and Guo-Hai Dong --- Chapter 9: Beyond Einstein: A Polynomial Affine Model of Gravity by Oscar Castillo-Felisola --- Chapter 10: Gravity, Curvature and Energy: Gravitational Field Intentionality to the Cohesion and Union of the Universe by Francisco Bulnes
    Pages: Online-Ressource (226 Seiten)
    ISBN: 9789535138242
    Language: English
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  • 41
    Keywords: Kalman filter
    Description / Table of Contents: Chapter 1: A Reference Recursive Recipe for Tuning the Statistics of the Kalman Filter by Mudambi R Ananthasayanam --- Chapter 2: The Error Covariance Matrix Inflation in Ensemble Kalman Filter by Guocan Wu and Xiaogu Zheng --- Chapter 3: Unscented Kalman Filter for State and Parameter Estimation in Vehicle Dynamics by Mark Wielitzka, Alexander Busch, Matthias Dagen and Tobias Ortmaier --- Chapter 4: Sensitivity-Based Adaptive SRUKF for State, Parameter, and Covariance Estimation on Mechatronic Systems by Mauro Hernán Riva, Mark Wielitzka and Tobias Ortmaier --- Chapter 5: Kalman Filters for Parameter Estimation of Nonstationary Signals by Sarita Nanda --- Chapter 6: Kalman Filter Models for the Prediction of Individualised Thermal Work Strain by Jia Guo, Ying Chen, Weiping Priscilla Fan, Si Hui Maureen Lee, Junxian Ong, Poh Ling Tan, Yu Li Lydia Law, Kai Wei Jason Lee and Kok-Yong Seng --- Chapter 7: Application of Kalman Filtering in Dynamic Prediction for Corporate Financial Distress by Qian Zhuang --- Chapter 8: Predicting Collisions in Mobile Robot Navigation by Kalman Filter by Angel Sánchez, Homero Ríos, Gustavo Quintana and Antonio Marín --- Chapter 9: Efficient Matrix-Free Ensemble Kalman Filter Implementations: Accounting for Localization by Elias David Niño Ruiz, Rolando Beltrán Arrieta and Alfonso Manuel Mancilla Herrera --- Chapter 10: Kalman Filters for Reference Current Generation in Shunt Active Power Filter (APF) by Ahmad Shukri Bin Abu Hasim, Syed Mohd Fairuz Bin Syed Mohd Dardin and Zulkifilie Bin Ibrahim --- Chapter 11: Applications of Kalman Filters for Coherent Optical Communication Systems by Lalitha Pakala and Bernhard Schmauss --- Chapter 12: Kalman Filter for Moving Object Tracking: Performance Analysis and Filter Design by Kenshi Saho --- Chapter 13: Distributed Kalman Filter by Felix Govaers --- Chapter 14: Consensus-Based Distributed Filtering for GNSS by Amir Khodabandeh, Peter J.G. Teunissen and Safoora Zaminpardaz
    Pages: Online-Ressource (314 Seiten)
    ISBN: 9789535138280
    Language: English
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  • 42
    Unknown
    Rijeka : InTech
    Keywords: biological diversity ; biodiversity ; plant species ; animal species
    Description / Table of Contents: 1. Impacts of Climate Change and Climate Variability on Wildlife Resources in Southern Africa: Experience from Selected Protected Areas in Zimbabwe / By Olga L. Kupika, Edson Gandiwa, Shakkie Kativu and Godwell Nhamo --- 2. Biological Conservation and Nature Protection Strategies in Spanish Atlantic Region / By Javier Ferreiro da Costa and Pablo Ramil-Rego --- 3. Methods for Biodiversity Assessment: Case Study in an Area of Atlantic Forest in Southern Brazil / By Maria Raquel Kanieski, Solon Jonas Longhi and Philipe Ricardo Casemiro Soares --- 4. Seabed Biodiversity Shifts Identify Climate Regimes: The 2011 Climate Regime Shift and Associated Cascades / By Jeffrey B. Marliave, Donna M. Gibbs, Laura A. Borden and Charles J. Gibbs --- 5. Safeguarding Marine Biodiversity in a Changing World: Maltese Small-Scale Fisheries and Alien Species / By Adriana Vella and Noel Vella --- 6. Biodiversity of Amphipoda Talitridae in Tunisian Wetlands / By Jelassi Raja, Khemaissia Hajer and Nasri-Ammar Karima --- 7. Biodiversity Restoration and Renewable Energy from Hydropower: Conflict or Synergy? / By Wondmagegn Tafesse Tirkaso, Ing‐Marie Gren, Leonard Sandin, Joel Segersten, David Spjut and Erik Degerman --- 8. Determinants of Orchid Occurrence: A Czech Example / By Zuzana Štípková, Kristina Kosánová, Dušan Romportl and Pavel Kindlmann --- 9. Dark-Colored Forest Bee Apis mellifera in Siberia, Russia: Current State and Conservation of Populations / By Nadezhda V. Ostroverkhova, Aksana N. Kucher, Olga L. Konusova, Ekaterina S. Gushchina, Vadim V. Yartsev and Yury L. Pogorelov --- 10. Integration of Ecological and Socioeconomic Factors in Securing Wildlife Dispersal Corridors in the Kavango-Zambezi Transfrontier Conservation Area, Southern Africa / By Simon M. Munthali, Nicholas Smart, Victor Siamudaala, Morris Mtsambiwa and Eleanor Harvie --- 11. Usefulness of Plant Biodiversity in the Cities of Togo / By Radji Raoufou and Kokou Kouami --- 12. Towards an Integrative Taxonomy of the Genus Alstroemeria (Alstroemeriaceae) in Chile: A Comprehensive Review / By Victor L. Finot, Carlos M. Baeza, Eduardo Ruiz, Oscar Toro and Pedro Carrasco --- 13. Ecosystem Services Provided by the Little Things That Run the World / By Olga Maria Correia Chitas Ameixa, António Onofre Soares, Amadeu M.V.M. Soares and Ana I. Lillebø --- 14. Commercial Harvesting of Marula (Sclerocarya Birrea) in Swaziland: A Quest for Sustainability / By Alfred Francis Murye and André J. Pelser --- 15. Synopsis of Mangle Species in Mexico / By Basáñez Muñoz Agustín de Jesús, Serrano Solis Arturo, Martínez Cortés Esmeralda, Cuervo López Liliana, Capistrán Barradas Ascención and Naval Ávila Celina --- 16. Positive Rules Can Lead to Positive Behaviours: Students’ Perceptions of Messages on Information Boards in Protected Areas / By Gregor Torkar, Saša Mezek and Janez Jerman --- 17. Prey Selection of Pseudorasbora parva (Temminck and Schlegel, 1846) in a Freshwater Ecosystem (Lake Eğirdir/Turkey) / By Meral Apaydin Yağci, Ahmet Alp, Abdulkadir Yağci, Vedat Yeğen and Mehmet Ali Turan Koçer --- 18. Importance of Underutilized Field Crops for Increasing Functional Biodiversity / By Franc Bavec, Urška Lisec and Martina Bavec
    ISBN: 9781789232332
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  • 43
    Keywords: aquatic resources ; exploitation ; pollution ; physicochemistry ; ocean
    Description / Table of Contents: 1. Introductory Chapter: Marine Ecology—Biotic and Abiotic Interactions / by Muhammet Turkoglu, Umur Onal and Ali Ismen --- 2. Geo-Biological Coupling of Authigenic Carbonate Formation and Autotrophic Faunal Colonization at Deep-Sea Methane Seeps I: Geo-Biological Settings / by Takeshi Naganuma --- 3. Geo-Biological Coupling of Authigenic Carbonate Formation and Autotrophic Faunal Colonization at Deep-Sea Methane Seeps II. Geo-Biological Landscapes / by Takeshi Naganuma --- 4. Plankton Ecology and Productivity in Jamaican Waters with New and Unique Applications / by Mona K. Webber, Dale F. Webber and Gale Persad Ford --- 5. Ecology of Planktonic Atlantic Cod (Gadus morhua) / by Stig Skreslet --- 6. Encounters in the Zooplankton: Implications for Pelagic Ecosystem Dynamics / by Laura Sanvicente-Añorve and Miguel Alatorre-Mendieta --- 7. Marine Fisheries in Nigeria: A Review / by Olalekan Jacob Olaoye and Wahab Gbenga Ojebiyi --- 8. Marine Stock Enhancement in India: Current Status and Future Prospects / by Mohammad Serajuddin, Farah Bano, Madhu Awasthi, Pragya Gupta and Graish Kumar --- 9. The Natural Ecology and Stock Enhancement of the Edible Jellyfish (Rhopilema esculentum Kishinouye, 1891) in the Liaodong Bay, Bohai Sea, China / by Jing Dong, Bin Wang, Yan Duan, Aiyong Wang, Yulong Li, Ming Sun, Yu Chai, Xiuze Liu, Xuguang Yu, Dong Guo and Xiaolin Wang --- 10. Overview on Mediterranean Shark’s Fisheries: Impact on the Biodiversity / by Mohamed Nejmeddine Bradai, Bechir Saidi and Samira Enajjar --- 11. An Update on Reproduction in Ghost Shrimps (Decapoda: Axiidea) and Mud Lobsters (Decapoda: Gebiidea) / by Patricio Hernáez --- 12. The Role of Microalgae in Renewable Energy Production: Challenges and Opportunities / by Abd Ellatif Mohamed Hussian
    ISBN: 9781789234497
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  • 44
    Unknown
    Rijeka : InTech
    Keywords: meteorology ; extreme weather events ; El Nino ; climate change
    Description / Table of Contents: 1. Comparison of the Temporal Variability of Maximum Daily Temperatures for Summer Months in Relation to El Nino Events in Southern Québec / by Ali Assani --- 2. Influence of Climate Regime Shift on the Abrupt Change of Tropical Cyclone Activity in Various Genesis Regions / by Chi-Cherng Hong and Yi-Kai Wu --- 3. The Highest Geomagnetic Storms of the Solar Cycle Observed at Ground Level / by Carlos E. Navia, Marcel N. de Oliveira and Carlos R. A. Augusto --- 4. Rainfall Distribution in Landfalling Tropical Cyclones / by Zifeng Yu and Yuqing Wang --- 5. Extreme Weather Events in Ukraine: Occurrence and Changes / by Vira Balabukh, Olena Lavrynenko, Volodymyr Bilaniuk, Andriy Mykhnovych and Olha Pylypovych --- 6. Heat Waves: Health Effects, Observed Trends and Climate Change / by Martínez-Austria Polioptro F and Bandala Erick R. --- 7. Malawi’s Experience with Weather Index Insurance as Agricultural Risk Mitigation Strategy Against Extreme Drought Events 1 / by Ephias M. Makaudze
    ISBN: 9781789236132
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  • 45
    Unknown
    Rijeka : InTech
    Keywords: remote sensing
    Description / Table of Contents: 1. A Study on Phenology Detection of Corn in Northeastern China with Fused Remote Sensing Data / by Linglin Zeng and Daxiang Xiang --- 2. Despeckling of Multitemporal Sentinel SAR Images and Its Impact on Agricultural Area Classification / by Vladimir Lukin, Oleksii Rubel, Ruslan Kozhemiakin, Sergey Abramov, Andrii Shelestov, Mykola Lavreniuk, Mykola Meretsky, Benoit Vozel and Kacem Chehdi --- 3. Remote Sensing of Forests using Discrete Return Airborne LiDAR / by Hamid Hamraz and Marco A. Contreras --- 4. Remote Sensing in Land Applications by Using GNSS-Reflectometry / by Yan Jia and Yuekun Pei --- 5. Remote Sensing with Shipborne High-Frequency Surface-Wave Radar / by Junhao Xie, Minglei Sun, Zhenyuan Ji and Guowei Yao --- 6. Use of Historical Google Earth Images to Create Likelihood of Aquatic Plants along Segments of Ohio River / by Yi-Hwa Wu, Ming-Chih Hung, Jeff Thomas and Maureen Gallagher --- 7. Remote Sensing to Detect and Monitor Trees in Various Environments: Case Studies in Chile / by Guido Staub --- 8. Monitoring Land Surface Deformation with Satellite ScanSAR Images: Case Studies on Large Earthquakes in China / by Tingchen Jiang, Xiuping Wang, Yuanzhi Zhang and Yu Li --- 9. Applications of Remote Sensing in Geoscience / by Hakim Saibi, Mohand Bersi, Mohamed Bodruddoza Mia, Nureddin Mohamed Saadi, Khalid Mohamed Saleh Al Bloushi and Robert W. Avakian
    ISBN: 9781789235371
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  • 46
    Unknown
    Rijeka : InTech
    Keywords: ecology ; biology ; earthworms
    Description / Table of Contents: 1. Introductory Chapter: Earthworms - The Ecological Engineers of Soil / by Sajal Ray --- 2. Abundance and Diversity of Earthworms in Managed and Non- Managed Fallow Lands of Calakmul Reserve of Campeche, Mexico / by Esperanza Huerta Lwanga, Lucero Sánchez-del Cid, Ligia Esparza- Olguín, Eduardo Martinez-Romero, Ben de Jong and Susana Ochoa-Gaona --- 3. Earthworms and Nematodes: The Ecological and Functional Interactions / by Jair Alves Dionísio, Wilian Carlo Demetrio and Arlei Maceda --- 4. Exploration of Earthworms of India through Online Digital Library / by Samrendra Singh Thakur and Shweta Yadav --- 5. Earthworms and Vermicomposting / by Jorge Domínguez --- 6. Environmental Influence of Soil toward Effective Vermicomposting / by Jaswinder Singh, Sharanpreet Singh, Adarsh Pal Vig and Arvinder Kaur
    ISBN: 9781789233971
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  • 47
    Keywords: volcanology ; seismology ; correlation ; seismic activity ; volcanic activity
    Description / Table of Contents: 1. Introductory Chapter: Volcanoes - From Their Geological and Geophysical Setting to Their Impact on Human Health / by Gemma Aiello --- 2. Correlation between Seismic and Volcanic Activity at a Large Spatial Scale in Italy: Examples from the Neapolitan Volcanic District (Vesuvius Volcano, Southern Italy) / by Pier Luigi Bragato --- 3. Exploring the Base of the Volcano: A Case Study of an Active Stratovolcano, Mt. Zao, NE Japan / by Shin Sato, Masao Ban, Teruki Oikawa, Seiko Yamasaki and Yuki NIshi --- 4. The Emissions of the Tagoro Submarine Volcano (Canary Islands, Atlantic Ocean): Effects on the Physical and Chemical Properties of the Seawater / by Juana Magdalena Santana-Casiano, Melchor González-Dávila and Eugenio Fraile-Nuez --- 5. The Characteristics of Volcanic Eruption in Indonesia / by Eko Hariyono and Liliasari S --- 6. Layered Gabbroids of the Pekulney Ridge, Chukotka, Northeastern Russia: Geology, Petrography, Age, and Geodynamics / by Irina L’vovna Zhulanova --- 7. Dynamics of Convective Heat and Mass Transfer in Permeable Parts of Seismofocal Zones of the Kamchatka Region and Conjugated Volcanic Arcs / by Yury Perepechko, Victor Sharapov, Konstantin Sorokin and Anna Mikheeva --- 8. Finite Element Models of Elastic Volcano Deformation / by Timothy Masterlark and Sui Tung --- 9. Mechanics of Magma Chamber with the Implication of the Effect of CO2 Fluxing / by Simakin Alexander G. and Ghassemi Ahmad --- 10. Volcanic Scoria as Cement Replacement / by Aref M. al-Swaidani --- 11. Volcanic Glass and its Uses as Adsorbent / by Juan Antonio Cecilia, Miguel Armando Autie-Pérez, Juan Manuel Labadie-Suarez, Enrique Rodríguez Castellón and Antonia Infantes Molina --- 12. Health Impact of Volcanic Emissions / by Martha Patricia Sierra-Vargas, Claudia Vargas-Domínguez, Karen Bobadilla-Lozoya and Octavio Gamaliel Aztatzi-Aguilar
    ISBN: 9781789233490
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  • 48
    Publication Date: 2021-03-29
    Description: In order to better understand the role of fluids during subduction and subsequent exhumation, we have investigated whole-rock and mineral chemistry (major and trace elements) and Li, B as well as O, Sr, Nd, Pb isotopes on selected continuous drill-core profiles through contrasting lithological boundaries from the Chinese Continental Scientific Drilling Program (CCSD) in Sulu, China. Four carefully selected sample sets have been chosen to investigate geochemical changes as a result of fluid mobilization during dehydration, peak metamorphism, and exhumation of deeply subducted continental crust. Our data reveal that while O and Sr-Nd-Pb isotopic compositions remain more or less unchanged, significant Li and/or B isotope fractionations occur between different lithologies that are in close contact during various metamorphic stages. Samples that are supposed to represent prograde dehydration as indicated by veins formed at high pressures (HP) are characterized by element patterns of highly fluid-mobile elements in the veins that are complementary to those of the host eclogite. A second sample set represents a UHP metamorphic crustal eclogite that is separated from a garnet peridotite by a thin transitional interface. Garnet peridotite and eclogite are characterized by a 〉10% difference in MgO, which, together with the presence of abundant hydroxyl-bearing minerals and compositionally different clinopyroxene grains demonstrate that both rocks have been derived from different sources that have been tectonically juxtaposed during subduction, and that hydrous silicate-rich fluids have been added from the subducting slab to the mantle. Two additional sample sets, comprising retrograde amphibolite and relatively fresh eclogite, demonstrate that besides external fluids, internal fluids can be responsible for the formation of amphibolite. Li and B concentrations and isotopic compositions point to losses and isotopic fractionation during progressive dehydration. On the other hand, fluids with isotopically heavier Li and B are added during retrogression. On a small scale, mantle-derived rocks may be significantly metasomatized by fluids derived from the subducted slab. Our study indicates that during high-grade metamorphism, Li and B may show different patterns of enrichment and of isotopic fractionation.
    Keywords: Fluid/rock interaction; Elemental transfer; Isotopic fractionation; Subduction and exhumation; Sulu ; 551 ; Earth Sciences; Mineralogy; Mineral Resources; Geology
    Language: English
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  • 49
    Publication Date: 2021-03-29
    Description: The Itajaí Basin located in the southern border of the Luís Alves Microplate is considered as a peripheral foreland basin related to the Dom Feliciano Belt. It presents an excellent record of the Ediacaran period, and its upper parts display the best Brazilian example of Precambrian turbiditic deposits. The basal succession of Itajaí Group is represented by sandstones and conglomerates (Baú Formation) deposited in alluvial and deltaic-fan systems. The marine upper sequences correspond to the Ribeirão Carvalho (channelized and non-channelized proximal silty-argillaceous rhythmic turbidites), Ribeirão Neisse (arkosic sandstones and siltites), and Ribeirão do Bode (distal silty turbidites) formations. The Apiúna Formation felsic volcanic rocks crosscut the sedimentary succession. The Cambrian Subida leucosyenogranite represents the last felsic magmatic activity to affect the Itajaí Basin. The Brusque Group and the Florianópolis Batholith are proposed as source areas for the sediments of the upper sequence. For the lower continental units the source areas are the Santa Catarina, São Miguel and Camboriú complexes. The lack of any oceanic crust in the Itajaí Basin suggests that the marine units were deposited in a restricted, internal sea. The sedimentation started around 600 Ma and ended before 560 Ma as indicated by the emplacement of rhyolitic domes. The Itajaí Basin is temporally and tectonically correlated with the Camaquã Basin in Rio Grande do Sul and the Arroyo del Soldado/Piriápolis Basin in Uruguay. It also has several tectono-sedimentary characteristics in common with the African-equivalent Nama Basin.
    Keywords: Dom Feliciano Belt; Ediacaran; Foreland basin; U–Pb SHRIMP ages; Provenance ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 50
    Publication Date: 2021-03-29
    Description: Most studies dealing with material properties of sandstones are based on a small data set. The present study utilizes petrographical and petrophysical data from 22 selected sandstones and ~300 sandstones from the literature to estimate/predict the material and weathering behaviour of characteristic sandstones. Composition and fabric properties were determined from detailed thin section analyses. Statistical methods applied consist of data distributions with whisker plots and linear regression with confidence regions for the petrophysical and weathering properties. To identify similarities between individual sandstones and to define groups of specific sandstone types, principal component and cluster analyses were applied. The results confirm an interaction between the composition, depositional environment, stratigraphic association and diagenesis, which leads to a particular material behaviour of sandstones. Three different types of pore radii distributions are observed, whereby each is derived from different pore space modifications during diagenesis and is associated with specific sandstone types: (1) bimodal with a maximum in capillary and micropores, (2) unimodal unequal with a maximum in smaller capillary pores and (3) unimodal equable with a maximum in larger capillary pores. Each distribution shows specific dependencies to water absorption, salt loading and hygric dilatation. The strength–porosity relationship shows dependence on the content of unstable lithic fragments, grain contact and type of pore radii distribution, cementation and degree of alteration. Sandstones showing a maximum of capillary pores and micropores (bimodal) exhibit a distinct hygric dilatation and low salt resistance. These sandstones are highly immature sublitharenites–litharenites, characterized by altered unstable rock fragments, which show pointed-elongated grain contacts, and some pseudomatrix. Quartz arenites and sublitharenites–litharenites which are strongly compacted and cemented, show unimodal unequal pore radii distributions, low porosity, high strength and a high salt resistance. The presence of swellable clay minerals in sublitharenites–litharenites leads to a medium to high hygric dilatation, whereas quartz arenites show little hygric dilatation. Sandstones with unimodal equal pore radii distribution mostly belong to weakly compacted and cemented mature quartz arenites. These are characterized by high water absorption and high porosity, low to medium strength and a low salt resistance. The data compiled in this study are used to create a sandstone quality catalogue. Since material properties are dependent on many different parameters of influence, the transition between different lithotypes is fluent.
    Keywords: Sandstones; Pore space; Prediction; Weathering behavior; Compressive strength ; 551 ; Earth Sciences; Geology
    Language: English
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  • 51
    Publication Date: 2021-03-29
    Description: The lattice-preferred orientation (LPOs) of two late-Variscan granitoids, the Meissen monzonite and the Podlesí dyke granite, were determined from high-resolution time-of-flight neutron diffraction patterns gained at the diffractometer SKAT in Dubna, Russia. The results demonstrate that the method is suitable for the LPO analysis of polyphase, relatively coarse-grained (0.1–6 mm) rocks. The Meissen monzonite has a prominent shape-preferred orientation (SPO) of the non-equidimensional minerals feldspar, mica and amphibole, whereas SPO of the Podlesí granite is unapparent at the hand-specimen scale. The neutron diffraction data revealed distinct LPOs in both granitoids. The LPO of the non-equidimensional minerals feldspar, mica and amphibole developed mainly during magmatic flow. In the case of the Meissen monzonite, the magmatic flow was superimposed by regional shear tectonics, which, however, had no significant effect on the LPOs. In both samples, quartz shows a weak but distinct LPO, which is atypical for plastic deformation and different in the syn-kinematic Meissen monzonite and the post-kinematic Podlesí granite. We suggest that, first of all, the quartz LPO of the Meissen monzonite is the result of oriented growth in an anisotropic stress field. The quartz LPO of the Podlesí granite, which more or less resembles a deformational LPO in the flattening field of the local strain field, developed during magmatic flow, whereby the rhombohedral faces of the quartz crystals adhered to the (010) faces of aligned albite and to the (001) faces of zinnwaldite. Due to shape anisotropy of their attachments, the quartz crystals were passively aligned by magmatic flow. Thus, magmatic flow and oriented crystal growth are the major LPO-forming processes in both granitoids. For the Meissen monzonite, the solid-state flow was too weak to cause significant crystallographic re-orientation of the minerals aligned by magmatic flow. Finally, the significance of our results for the evaluation of the regional tectonic environment during magma emplacement is discussed. The discussion on the regional implications of the more methodologically oriented results provides the basis for future, more regionally aimed studies in view of the fabric characteristics of such plutons and their developing mechanisms.
    Keywords: Neutron diffraction; Lattice-preferred orientation; Shape-preferred orientation; Magmatic flow; Podlesí granite; Meissen Massif ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
    Language: English
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  • 52
    Publication Date: 2021-03-29
    Description: The Eastern Sierras Pampeanas were structured by three main events: the Ediacaran to early Cambrian (580–510 Ma) Pampean, the late Cambrian–Ordovician (500–440 Ma) Famatinian and the Devonian-Carboniferous (400–350 Ma) Achalian orogenies. Geochronological and Sm–Nd isotopic evidence combined with petrological and structural features allow to speculate for a major rift event (Ediacaran) dividing into two Mesoproterozoic major crustal blocks (source of the Grenvillian age peaks in the metaclastic rocks).This event would be coeval with the development of arc magmatism along the eastern margin of the eastern block. Closure of this eastern margin led to a Cambrian active margin (Sierra Norte arc) along the western margin of the eastern block in which magmatism reworked the same crustal block. Consumption of a ridge segment (input of OIB signature mafic magmas) which controlled granulite-facies metamorphism led to a final collision (Pampean orogeny) with the western Mesoprotrozoic block. Sm–Nd results for the metamorphic basement suggest that the TDM age interval of 1.8–1.7 Ga, which is associated with the less radiogenic values of εNd(540) (−6 to −8), can be considered as the mean average crustal composition for the Eastern Sierras Pampeanas. Increasing metamorphic grade in rocks with similar detrital sources and metamorphic ages like in the Sierras de Córdoba is associated with a younger TDM age and a more positive εNd(540) value. Pampean pre-540 Ma granitoids form two clusters, one with TDM ages between 2.0 and 1.75 Ga and another between 1.6 and 1.5 Ga. Pampean post-540 Ma granitoids exhibit more homogenous TDM ages ranging from 2.0 to 1.75 Ga. Ordovician re-activation of active margin along the western part of the block that collided in the Cambrian led to arc magmatism (Famatinian orogeny) and related ensialic back-arc basin in which high-grade metamorphism is related to mid-crustal felsic plutonism and mafic magmatism with significant contamination of continental crust. TDM values for the Ordovician Famatinian granitoids define a main interval of 1.8–1.6, except for the Ordovician TTG suites of the Sierras de Córdoba, which show younger TDM ages ranging from 1.3 to 1.0 Ga. In Devonian times (Achalian orogeny), a new subduction regime installed west of the Eastern Sierras Pampeanas. Devonian magmatism in the Sierras exhibit process of mixing/assimilation of depleted mantle signature melts and continental crust. Achalian magmatism exhibits more radiogenic εNd(540) values that range between 0.5 and −4 and TDM ages younger than 1.3 Ga. In pre-Devonian times, crustal reworking is dominant, whereas processes during Devonian times involved different geochemical and isotopic signatures that reflect a major input of juvenile magmatism.
    Keywords: Magmatism-metamorphism; Sm–Nd systematics; Tectonic evolution; Neoproterozoic-early Paleozoic orogenies; Eastern Sierras Pampeanas ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 53
    Publication Date: 2021-03-29
    Description: The expansion processes that develop in building stones upon changes of moisture content may be an important contributing factor for their deteriorations. Until recently, few data could be found in the literature concerning this parameter and weathering processes. Moreover, the processes that may be responsible for the moisture related expansion of natural building stones are not yet completely understood. To further elucidate this process, extensive mineralogical, petrophysical and fabric investigations were performed on eight German sandstones in order to obtain more information regarding the weathering process and its dependence on the rock fabric. The analysed sandstones show a wide range of pore size distributions and porosities. A positive correlation with the fabric and the pore space can be found for all studied petrophysical parameters. The intensity of the expansion and related swelling pressure cannot be attributed only to the swelling of clay minerals. The investigations suggest that the micropores and the resulting disjoining pressure during wet/dry cycles also play an important role. The results obtained suggest that the mechanism is related to the presence of liquid water within the porous material.
    Keywords: Sandstone weathering; Moisture expansion; Hygric and hydric wetting; Swelling clay minerals ; 551 ; Earth Sciences; Geology
    Language: English
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  • 54
    facet.materialart.
    Unknown
    Springer-Verlag | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: The profitable production of dimension stone mainly depends on the extractable block size. The regularity and volume of the blocks are of critical importance, and are controlled by the three-dimensional pattern of the discontinuity system. Therefore, optimization of block size has to be the aim when quarrying for natural stone. This is mainly connected to the quantification of joints and fractures, i.e., their spacing and orientation. The problem of finding unfractured blocks within arbitrarily oriented and distributed planes can be solved effectively by a numerical algorithm. The main effects of joint orientations on block sizes and shapes will be presented in this article. Quantification of unfractured blocks with the aim of optimization is illustrated by detailed studies on several quarries. The algorithm used in this study can be applied as a powerful tool in the planning of a quarry and the future exploitation of dimension stone. Application of the described approach is demonstrated on practical examples of quarrying natural stones, namely, sandstone, granite, rhyolite, etc. Block quarrying can be optimized by using the new 3D-BlockExpert approach. The quantification of unfractured rock masses is also shown to contribute to a more ecological protection and the sustainable use of natural resources.
    Keywords: Production of dimension stones; Joints and fractures; Block sizes; Optimization ; 551 ; Earth Sciences; Geology
    Language: English
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  • 55
    Publication Date: 2021-03-29
    Description: Damages to natural building stones induced by the action of frost are considered to be of great importance. Commonly, the frost resistance of building stones is checked by standardised freeze–thaw tests before using. Corresponding tests normally involve 30–50 freeze–thaw action cycles. In order to verify the significance of such measurements, we performed long-term tests on four selected rocks over 1,400 freeze–thaw action cycles. Additionally, numerous petrophysical parameters were analysed to compare the behaviour of rocks in the weathering tests according to the current explanatory models of stress formation by growing ice crystals in the pore space. The long-term tests yield more information about the real frost sensibility of the rocks. A clear deterioration cannot be determined in most cases until 50 weathering cycles have been completed. In the freeze–thaw tests, the samples are also stressed by changing temperature and moisture, indicating that different decay mechanisms can interfere with each other. Thus, thermohygric and moisture expansion are important damage processes.
    Keywords: Freeze–thaw action; Natural building stones; Microfabric; Pore space properties ; 551 ; Earth Sciences; Geology
    Language: English
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  • 56
    Publication Date: 2021-03-29
    Description: Owing to its long building history, different types of building stones comprised the construction of the Cologne Cathedral. Severe damage is observed on the different stones, e.g., sandstones, carbonate, and volcanic rocks, especially when the different stone materials neighbor the medieval “Drachenfels trachyte” from the “Siebengebirge”. The question arises, “Is the insufficient compatibility of the implemented building materials causatively related to the strong decay of the Drachenfels trachyte?” The present investigations focus on the petrography and mineralogical composition of eight different stones from the Cologne Cathedral. Petrophysical data, i.e., phase content, moisture and thermal characteristics as well as strength properties are determined and discussed in correlation to each other, showing that not only in terms of lithology great differences exist, but also the petrophysical properties strongly diverge. The ascertained parameters are discussed in view of the deterioration behavior and decay mechanisms of the different stones. To evaluate the compatibility of original, replacement and modern building materials, the properties of the investigated stones are compared to those of Drachenfels trachyte by means of constraints given in the literature. Besides optical properties, petrophysical criteria are also defined as well as strength values. It could be shown that primarily moisture properties, i.e., capillary and sorptive water uptake, water saturation, drying processes and moisture dilatation can be addressed to the deterioration processes.
    Keywords: Stone decay; Cologne Cathedral; Compatibility of building materials; Requirements for replacement stones ; 551 ; Earth Sciences; Geology
    Language: English
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  • 57
    Publication Date: 2021-04-27
    Description: The range of substrates that the bone-eating marine worm Osedax is able to consume has important implications for its evolutionary history, especially its potential link to the rise of whales. Once considered a whale specialist, recent work indicates that Osedax consumes a wide range of vertebrate remains, including whale soft tissue and the bones of mammals, birds and fishes. Traces resembling those produced by living Osedax have now been recognized for the first time in Oligocene whale teeth and fish bones from deep-water strata of the Makah, Pysht and Lincoln Creek formations in western Washington State, USA. The specimens were acid etched from concretions, and details of the borehole morphology were investigated using micro-computed tomography. Together with previously published Osedax traces from this area, our results show that by Oligocene time Osedax was able to colonize the same range of vertebrate remains that it consumes today and had a similar diversity of root morphologies. This supports the view that a generalist ability to exploit vertebrate bones may be an ancestral trait of Osedax.
    Keywords: Deep-sea; Trace fossil; Osedax; Whale; Fish; Micro-CT; Tiefsee; Spurenfossil; Osedax; Wal; Fisch; Micro-CT ; 551 ; Earth Sciences; Paleontology
    Language: English
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  • 58
    Publication Date: 2021-03-29
    Description: Forests in lowland Bolivia suffer from severe deforestation caused by different types of agents and land use activities. We identify three major proximate causes of deforestation. The largest share of deforestation is attributable to the expansion of mechanized agriculture, followed by cattle ranching and small-scale agriculture. We utilize a spatially explicit multinomial logit model to analyze the determinants of each of these proximate causes of deforestation between 1992 and 2004. We substantiate the quantitative insights with a qualitative analysis of historical processes that have shaped land use patterns in the Bolivian lowlands to date. Our results suggest that the expansion of mechanized agriculture occurs mainly in response to good access to export markets, fertile soil, and intermediate rainfall conditions. Increases in small-scale agriculture are mainly associated with a humid climate, fertile soil, and proximity to local markets. Forest conversion into pastures for cattle ranching occurs mostly irrespective of environmental determinants and can mainly be explained by access to local markets. Land use restrictions, such as protected areas, seem to prevent the expansion of mechanized agriculture but have little impact on the expansion of small-scale agriculture and cattle ranching. The analysis of future deforestation trends reveals possible hotspots of future expansion for each proximate cause and specifically highlights the possible opening of new frontiers for deforestation due to mechanized agriculture. Whereas the quantitative analysis effectively elucidates the spatial patterns of recent agricultural expansion, the interpretation of long-term historic drivers reveals that the timing and quantity of forest conversion are often triggered by political interventions and historical legacies.
    Keywords: Bolivia; Amazon; Deforestation; Proximate causes; Spatial analysis; Multinomial logistic regression ; 551 ; Environment; Geology; Geography (general); Regional/Spatial Science; Climate Change; Nature Conservation; Oceanography
    Language: English
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  • 59
    facet.materialart.
    Unknown
    Springer Berlin Heidelberg | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: Characeae, a family of calcifying green algae, are common in carbonate-rich freshwaters. The southwestern shoreline of Lake Ganau (Kurdistan Region, northeastern Iraq) harbors dense and thick mats of these algae (genus Chara). On the lake bottom and along the shore, carbonate sands and rocks rich in the remains of stems, branches, nodes, and whorls of Chara are deposited. These deposits show all stages of growth and degradation of characean algae, including replacement and lithification into limestone. The replacement of the fragments by fine-grained calcite preserved delicate microstructures of Chara, such as cortical walls, cell shape, inner and outer layers of the stems, and reproductive organs. Based on roundness, sorting, the degree of lithification, and preserved microstructures of the grains (fragments), three facies were recognized. The first is represented by a newly formed lime sand facies showing elongated grains, poor sorting, and reduced roundness, with pristine preservation of characean surface microstructures. The second is a weathered lime sand facies, which shows better sorting and good roundness, whereas internal structures of characean fragments are still well preserved. The third is comprised of a lithified lime sand facies (grainstone), with very well sorted and rounded grains, and poorly preserved external and internal structures of the characeans. As compared to the newly formed lime sand facies, the grainstone facies shows an increase in grain size by more than 30 %, owing to precipitation of micritic lamina of possible microbial origin. Eventually, the Characeae-derived lime sands are lithified into oolitic limestones with sparry calcite cement, forming a grainstone microfacies. The present study has important implications for the interpretation of pre-Quaternary environments, as it records all stages of the fossilization process of characean green algae and highlights the role of these algae in the formation of oolitic carbonate rocks.
    Keywords: Characeae; Chara; Ooids; Green algae; Carbonate sand; Freshwater carbonates; Facies ; 551 ; Earth Sciences; Sedimentology; Biogeosciences; Geochemistry; Paleontology; Ecology
    Language: English
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  • 60
    Publication Date: 2021-03-29
    Description: The Mantiqueira Province represents a series of supracrustal segments of the South-American counterpart formed during the Gondwana Supercontinent agglutination. In this crustal domain, the process of escape tectonics played a conspicuous role, generating important NE–N–S-trending lineaments. The oblique component of the motions of the colliding tectonic blocks defined the transpressional character of the main suture zones: Lancinha-Itariri, Cubatão-Arcádia-Areal, Serrinha-Rio Palmital in the Ribeira Belt and Sierra Ballena-Major Gercino in the Dom Feliciano Belt. The process as a whole lasted for ca. 60 Ma, since the initial collision phase until the lateral escape phase predominantly marked by dextral and subordinate sinistral transpressional shear zones. In the Dom Feliciano Belt, southern Brazil and Uruguay, transpressional event at 630–600 Ma is recognized and in the Ribeira Belt, despite less coevally, the transpressional event occurred between 590 and 560 Ma in its northern-central portion and between ca. 625 and 595 Ma in its central-southern portion. The kinematics of several shear zones with simultaneous movement in opposite directions at their terminations is explained by the sinuosity of these lineaments in relation to a predominantly continuous westward compression.
    Keywords: Mantiqueira Province; Gondwana agglutination; Suture zones; Escape tectonics; Metamorphic-deformational events ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 61
    Publication Date: 2021-03-29
    Description: The Sierras Pampeanas in central and north-western Argentina constitute a distinct morphotectonic feature between 27°S and 33°S. The last stage of uplift and deformation in this area are interpreted to be closely related to the Andean flat-slab subduction of the Nazca plate beneath the South American plate. K–Ar fault gouge dating and low-temperature thermochronology along two transects within the Sierra de Comechingones reveal a minimum age for the onset of brittle deformation about 340 Ma, very low exhumation rates since Late Paleozoic time, as well as a total exhumation of about 2.3 km since the Late Cretaceous. New Ar–Ar ages (7.54–1.91 Ma) of volcanic rocks from the San Luis volcanic belt support the eastward propagation of the flat-slab magmatic front, confirming the onset of flat-slab related deformation in this region at 11.2 Ma. Although low-temperature thermochronology does not clearly constrain the signal of the Andean uplift, it is understood that the current structural relief related to the Comechingones range has been achieved after the exhumation of both fault walls (circa 80–70 Ma).
    Keywords: Sierras Pampeanas; K–Ar dating; Fault gouge dating; Low thermal geochronology; Andean uplift ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 62
    Publication Date: 2021-03-29
    Description: The Palaeogene was the most recent greenhouse period on Earth. Especially for the Late Palaeocene and Early Eocene, several superimposed short-term hyperthermal events have been described, including extremes such as the Palaeocene–Eocene Thermal Maximum. Major faunal and floral turnovers in the marine and terrestrial realms were recorded in association with these events. High-resolution palynological analysis of the early Middle Eocene maar lake sediments at Messel, near Darmstadt, Germany, provides an insight into the dynamics of a climax vegetation during the Middle Eocene greenhouse climate in a time span without significant climatic excursions. Numerical techniques like detrended correspondence analysis and wavelet analysis have been applied to recognize cyclic fluctuations and long-term trends in the vegetation through a time interval of approximately 640 kyr. Based on the numerical zoning of the pollen diagram, three phases in the development of the vegetation may be distinguished. Throughout these phases, the climax vegetation did not change substantially in qualitative composition, but a trend towards noticeably less humid conditions probably in combination with a drop of the water level in the lake may be recognized. A shift in algal population from the freshwater dinoflagellate cyst Messelodinium thielepfeifferae to a dominance of Botryococcus in the uppermost part of the core is interpreted as a response to changes in acidity and nutrient availability within the lake. Time series analyses of pollen assemblages show that variations in the Milankovitch range of eccentricity, obliquity and precession can be distinguished. In addition, fluctuations in the sub-Milankovitch range are indicated. This demonstrates that floral changes during steady depositional conditions in the Middle Eocene of Messel were controlled by orbital forcing.
    Keywords: Middle Eocene; Maar lake; Palynology; Climate variability; Milankovitch cycles; Multivariate statistics; Time series analysis ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
    Language: English
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  • 63
    Publication Date: 2021-03-29
    Description: In the presented case study, ascomycete fungi and green algae on a marble monument were identified by comparisons of the 18S rRNA gene sequences, which were obtained from DNA either from environmental samples or from enrichment cultures. The organisms were found to be responsible for either black or green surface coverings on different areas of the monument surface. Most fungi were related to plant-inhabiting genera, corresponding to a heavy soiling of the marble surface with honeydew. Whereas green algae of the genera Stichococcus, Chloroidium and Apatococcus were found to be dominant in all samples, isolates of two additional genera were recovered only from enrichment cultures. A reference strain of Apatococcus lobatus and an isolate of Prasiolopsis sp. were investigated with respect to putative surface adhesive structures of the cell envelope. The Prasiolopsis cell walls were covered with a thin adhesive exopolysaccharide layer involved in biofilm formation.
    Keywords: Marble monument; Biofilm; Ascomycete fungi; Green algae; Cell wall; Exopolysaccharide ; 551 ; Earth Sciences; Geology
    Language: English
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  • 64
    facet.materialart.
    Unknown
    Springer-Verlag | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: Bowing is a well-known phenomenon seen in marbles used as building veneers. This form of rock weathering occurs as a result of external factors such as temperature, humidity, the system for anchoring the marble slabs or the panel dimensions. Under the same external conditions, many factors will determine the degree of deformation including petrography, thermal properties and residual locked stresses. The usual way to solve the problem of bowed marble slabs is to replace them with other materials, such as granites, in which the deformation still exists but is less common. In this study, eight ornamental granites with different mineralogy, grain size, grain shape, porosity and fabric were tested in a laboratory to assess their susceptibility to bowing. Three slabs of granite, each cut with a different orientation, were studied under different conditions of temperature (90 and 120°C) and water saturation (dry and wet) to investigate the influence of these factors together with that of anisotropy. At 90°C, only the granite with the coarsest grain size and low porosity exhibited deformation under wet conditions. At 120°C and wet conditions, three of the granites showed evident signs of bowing. Again, the granite with the coarsest grain size was the most deformed. It was concluded that the wide grain size distribution influences microcracking more than other expected factors, such as the quartz content of the rock. Also, mineral shape-preferred orientation and porosity play an important role in the bowing of the studied granites.
    Keywords: Granitoids; Bowing; Texture; Thermal expansion ; 551 ; Earth Sciences; Geology
    Language: English
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  • 65
    Publication Date: 2021-03-29
    Description: The emplacement of the Mesoproterozoic Götemar Pluton into Paleoproterozoic granitoid host rocks of the Transscandinavian Igneous Belt is re-examined by microfabric analysis, including cathodoluminescence microscopy. Field data on the pluton-host rock system are used to strengthen the model. The Götemar Pluton, situated on the Baltic Shield of SE Sweden, is a horizontally zoned tabular structure that was constructed by the intrusion of successive pulses of magma with different crystal/melt ratios, at an estimated crustal depth of 4–8 km. Initial pluton formation involved magma ascent along a vertical dike, which was arrested at a mechanical discontinuity within the granitoid host rocks; this led to the formation of an initial sill. Subsequent sill stacking and their constant inflation resulted in deformation and reheating of existing magma bodies, which also raised the pluton roof. This multi-stage emplacement scenario is indicated by complex dike relationships and the occurrence of several generations of quartz (Si-metasomatism). The sills were charged by different domains of a heterogeneous magma chamber with varying crystal/melt ratios. Ascent or emplacement of magma with a high crystal/melt ratio is indicated by syn-magmatic deformation of phenocrysts. Complex crystallization fabrics (e.g. oscillatory growth zoning caused by high crystal defect density, overgrowth and replacement features, resorbed and corroded crystal cores, rapakivi structure) are mostly related to processes within the main chamber, that is repeated magma mixing or water influx.
    Keywords: Pluton emplacement; Microfabrics; Cathodoluminescence; Mesoproterozoic; Götemar; SE Sweden ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 66
    Publication Date: 2021-03-29
    Keywords: Provenance; Heavy minerals; Detrital zircon; U–Pb dating; Rhine River; Alps ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
    Language: English
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  • 67
    Publication Date: 2021-03-29
    Keywords: Landsat ETM+; Sea surface temperature; Submarine groundwater discharge; Groundwater resource ; 551 ; Earth Sciences; Geology
    Language: English
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  • 68
    Publication Date: 2021-03-29
    Description: Slates are internationally known as roof and façade-cladding material since prehistoric times. The methods required to mine and manufacture these dimensional stones are relatively simple in comparison to those utilized in granitic dimensional stones. This has led to a worldwide rentable commercialization of slate in the last centuries and also to the development of characteristic cultural landscapes. In Uruguay several slates are mined and used in architecture, especially as façade cladding and floor slabs. The most important slates regarding their production and utilization are the dolomitic slates. These dolomitic slates are associated with the Neoproterozoic thrust and fold belt of the Dom Feliciano belt. Representative samples have been geochemically and petrographically characterized, as well as petrophysically and petromechanically analyzed. The petrophysical and petromechanical properties were investigated in a very systematic way with respect to the new European standards, showing values comparable to those registered for internationally known slates. Detailed structural and deposit analysis were carried out in Uruguay in order to evaluate the dolomitic slate deposits. The slates are linked to calc-silicate strata in a greenschist facies volcano-sedimentary sequence and the deposits are located in the limb of a regional fold, where bedding and cleavage are parallel. The main lithotype is a layered and fine-grained dolomitic slate with a quite diverse palette of colors: light and dark green, gray, dark gray, reddish and black. The mined slate is split into slabs 0.5–2 cm thick. In the past, the average production in Uruguay was around 4,000 tons/year and a historical maximum of 13,000 tons was reached in 1993 (Oyhantçabal et al. in Z dt Ges Geowiss 158(3):417–428, 2007). The oscillations in the regional demand were the cause of several flourishing and decay cycles in the activity, but our investigation shows a considerable volume of indicated resources and therefore a very good potential.
    Keywords: Slates; Dimensional stones; Petrophysical properties; Petrography; Uruguay ; 551 ; Earth Sciences; Geology
    Language: English
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  • 69
    Publication Date: 2021-03-29
    Description: Microstructure‐based finite-element analysis with a microcracking algorithm was used to simulate an actual degradation phenomenon of marble structures, i.e., microcracking. Both microcrack initiation and crack propagation were characterized, as were their dependence on lattice preferred orientation (LPO), grain shape preferred orientation (SPO), grain size, marble composition (calcite and dolomite) and grain‐boundary fracture toughness. Two LPOs were analyzed: a random orientation distribution function and an orientation distribution function with strong directional crystalline texture generated from a March–Dollase distribution. Three SPOs were considered: equiaxed grains; elongated grains and a mixture of equiaxed and elongated grains. Three different grain sizes were considered: fine grains of order 200 μm (only calcitic marble); medium size grains of order 1 mm (calcitic and dolomitic marbles); and large grains of order 2 mm (only dolomitic marble). The fracture surface energy for the grain boundaries, γig, was chosen to be 20 and 40 % of the fracture surface energy of a grain, γxtal, so that both intergranular and transgranular fracture were possible. Studies were performed on these idealized marble microstructures to elucidate the range of microcracking responses. Simulations were performed for both heating and cooling by 50 °C in steps of 1 °C. Microcracking results were correlated with the thermoelastic responses, which are indicators related to degradation. The results indicate that certain combinations of LPO, SPO, grain size, grain‐boundary fracture toughness and marble composition have a significant influence on the thermal-elastic response of marble. Microstructure with the smallest grain size and the highest degree of SPO and LPO had less of a tendency to microcrack. Additionally, with increasing SPO and LPO microcracking becomes more spatially anisotropic. A significant observation for all microstructures was an asymmetry in microcracking upon heating and cooling: more microcracking was observed upon cooling than upon heating. Given an identical microstructure and crystallographic texture, calcite showed larger thermal stresses than dolomite, had an earlier onset of microcracking upon heating and cooling, and a greater microcracked area at a given temperature differential. Thermal expansion coefficients with and without microcracking were also determined.
    Keywords: Marble; Microcracking; Finite-element modeling; Lattice preferred orientation; Shape preferred orientation; Strain energy density; Maximum principal stress; Thermal expansion coefficient; Thermal expansion anisotropy ; 551 ; Earth Sciences; Geology
    Language: English
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  • 70
    Publication Date: 2021-03-29
    Description: In Uruguay commercial granite varieties comprise mafic rocks, granitoids, and syenitoids. There is a long tradition in Uruguay, as well as worldwide, of using dimensional stones in architecture and art, specially granitic ones. Some of the present applications of these dimensional stones are as façade cladding, countertops, and outdoor and indoor floor slabs. The color spectrum of the Uruguayan granitic dimensional stones varies from black to light gray, covering a wide variety of red and pink and minor greenish-gray. The décor of these granitic dimensional stones is mainly determined by their fabric, fundamentally the grain size and the color distribution between the different minerals that compose the rocks. In the present research the most important commercial granites were sampled to analyze their petrography and petrophysical properties. A detailed structural analysis has been performed in several deposits, as well as the application of the software 3D Block Expert for modeling the possible raw block size distribution. Other factors controlling the mining viability of the deposits were also studied (e.g., homogeneity/heterogeneity of color and décor) and the possible reserves were calculated.
    Keywords: Granitic dimensional stones; Petrophysical properties; Petrography; Deposit characterization; Uruguay ; 551 ; Earth Sciences; Geology
    Language: English
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  • 71
    Publication Date: 2021-03-29
    Description: The old mining city of Guanajuato in middle Mexico preserves one of the most important historical legacies in colonial buildings, the UNESCO declared the city World Heritage Site in 1988. Practically all the colonial constructions were built with natural stones from the neighbourhood, of which stands a greenish to reddish vulcanite, called Loseros Tuff. Although the Loseros Tuff is widely used in historical buildings in the city. It shows significant deterioration and weathering effects, principally in the parts where the tuff shows a coarse grain size. The petrographic, petrophysical, mineralogical and geochemical properties of the Loseros Tuff were analysed in order to determine the causes, effects, behaviour and response to deterioration of this volcanic rock. The results of the investigations suggest that in addition to the parameters like the grain size and the porosity properties, the pore radii distribution is decisive for the effectiveness of porosity and the water transport into the rock. It is recognized that once the liquid water invades the rock the dissolution of the matrix occurs, which is accompanied by a sudden moisture expansion favoured by the newly formed secondary porosity and the high content of expandable clay minerals.
    Keywords: Tuff; Moisture expansion; Porosity; Guanajuato ; 551 ; Earth Sciences; Geology
    Language: English
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  • 72
    Publication Date: 2021-03-29
    Description: The degree of weathering in natural stones on buildings and sculptures has been determined for many years in numerous cases by means of ultrasonic measurements. Conclusions concerning the strength of the rock and the type of weathering can thus be drawn. This relationship has not been established for all rock types. Most of the progress utilizing this method has been made in the analysis of marbles, where an increasing degree of weathering shows lower ultrasonic velocities. In the present study, four Carrara marble samples showing similar rock fabrics, but with respect to weathering exhibit considerable differences are investigated. Porosity varies between 0.2 vol. % and ca. 2.4 vol. %, whereby with increasing porosity the pore radii changes as well. Parallel to this the ultrasonic velocities change in dry samples from about 5.5 to 1.6 km/s, respectively. Model calculations reveal that the velocity reduction is caused by cracks with an extremely small aspect ratio of about 0.005 or even less. After a specific loss of strength, however, solution processes can become active, which modify the microcracks and generate an opposite trend. In the process a strong porosity increase correlates to a relatively small velocity reduction. With the presence of water the Vp porosity weathering relationship experiences a considerable modification. Parallel to the reduction of the ultrasonic velocities, it was determined that the mechanical strength (compressive strength, flexural strength, etc.) as well as the static Young’s modulus is reduced almost equally by a progressive advancement of the weathering front. In one case study dealing with tensile strengths, it was clearly documented how tensile cracks develop and propagate in dependence of the rock fabric. The rock mechanical and ultrasonic velocity data were used for stability assessments applied to the marble statuaries from the Schlossbrücke in Berlin. Stability assessments of the sculpture group 4 reveal that some critical parts must be replaced due to safety reasons.
    Keywords: Marble waethering; Mechanical properties; Ultrasonic wave velocites; Stability assessment; Cultural heritage ; 551 ; Earth Sciences; Geology
    Language: English
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  • 73
    Publication Date: 2021-03-29
    Description: Fabrics of Cambrian sedimentary dykes formed in Proterozoic granites of the Västervik area (Southeast Sweden) evidence repeated opening/filling and mineralisation/cementation events under varying conditions. Diagnostic features include (1) wall-parallel boundaries between epiclastic fillings and (2) early formed dyke sediments that appear as lithoclasts in subsequently formed sedimentary fillings. The psammitic components mostly consist of well-rounded quartz grains related to a coastal environment and fragments from the granitic host rock. Platy calcitic fragments embedded in the epiclastic matrix originally formed as microveins within already-lithified dyke sediments and the adjacent host rock. Convex downward-pointing, internal sagging structures, together with the preferred orientation of compositional boundaries and long axes of grains/rock fragments parallel to the dyke walls, are interpreted as the result of suction-controlled flow of unconsolidated fillings during episodes of downward dyke growth. Pressure solution of quartz grains are evidence of extensional phases with dyke propagation that were interrupted by phases of horizontal compression normal to the dyke walls. The N–S and NE–SW striking sedimentary dykes formed by opening of a pre-existing joint set during NW–SE oriented rifting during the Cambrian.
    Keywords: Sedimentary dykes; Proterozoic; Southeast Sweden; Microfabrics; Passive infill; Cambrian geodynamics ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
    Language: English
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  • 74
    Publication Date: 2021-03-29
    Description: Moisture expansion in natural building stones is considered one of the most important factors affecting their weathering and deterioration. The processes that may be responsible for the expansion under determinate relative humidity (hygric dilatation) and water-saturated conditions (hydric dilatation) are generally attributed to the presence of swellable clay minerals. In contrast to this assumption, our investigations show that moisture expansion also takes place in volcanic tuff building stones almost free from clay minerals. To provide a deeper understanding of the processes, swelling and deterioration were performed on 14 volcanic tuffs used as important building stones of different ages, compositions and weathering stages from Mexico, Germany and Hungary. The investigations undertaken include extensive chemical, petrophysical and fabric analyses. The samples show a wide range of effective porosity, microporosity, capillary water absorption, moisture expansion, and CEC values. High moisture expansion does not seem to depend on clay mineral content alone. We also observed that there is no significant effect on dilatation if clay minerals are present but only form a thin coat on the outer shell of bigger pores. Moreover, we identified a correlation between microporosity, average pore radius and moisture expansion. The investigations highlight the fact that moisture expansion cannot only be attributed to swellable clay minerals, and suggest that the presence and accumulation of micropores and their average radius and distribution play an important role for non-clay associated swelling intensity, which can most probably be attributed to the disjoining pressure.
    Keywords: Weathering of tuffs; Hygric expansion; Hydric expansion; Clay mineralogy; Microporosity; Disjoining pressure ; 551 ; Earth Sciences; Geology
    Language: English
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  • 75
    Publication Date: 2021-03-29
    Description: Investigation by Raman spectroscopy of samples from different geological settings shows that the occurrence of TiO2 polymorphs other than rutile can hardly be predicted, and furthermore, the occurrence of anatase is more widespread than previously thought. Metamorphic pressure and temperature, together with whole rock chemistry, control the occurrence of anatase, whereas variation of mineral assemblage characteristics and/or fluid occurrence or composition takes influence on anatase trace element characteristics and re-equilibration of relict rutiles. Evaluation of trace element contents obtained by electron microprobe in anatase, brookite, and rutile shows that these vary significantly between the three TiO2 phases. Therefore, on the one hand, an appropriation to source rock type according to Nb and Cr contents, but as well application of thermometry on the basis of Zr contents, would lead to erroneous results if no phase specification is done beforehand. For the elements Cr, V, Fe, and Nb, variation between the polymorphs is systematic and can be used for discrimination on the basis of a linear discriminant analysis. Using phase group means and coefficients of linear discriminants obtained from a compilation of analyses from samples with well-defined phase information together with prior probabilities of groupings from a natural sample compilation, one is able to calculate phase grouping probabilities of any TiO2 analysis containing at least the critical elements Cr, V, Fe, and Nb. An application of this calculation shows that for the appropriation to the phase rutile, a correct-classification rate of 99.5% is obtained. Hence, phase specification by trace elements proves to be a valuable tool besides Raman spectroscopy.
    Keywords: TiO2 polymorph discrimination; Phase classification; Anatase; Brookite; Rutile; Erzgebirge; Zr-in-rutile thermometry ; 551 ; Earth Sciences; Mineral Resources; Mineralogy; Geology
    Language: English
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  • 76
    Publication Date: 2021-03-29
    Description: A new U–Pb SHRIMP age of 551 ± 4 Ma on a mylonitic porphyry that intruded into the Sierra Ballena Shear Zone (Southernmost Dom Feliciano Belt, Uruguay) and a review of relevant published data make possible a more refined correlation and reconstruction of Brasiliano/Pan-African transpressional events. Paleogeographic reconstruction, kinematics and timing of events indicate a connection between the shear systems of the Dom Feliciano and Kaoko Belts at 580–550 Ma. Sinistral transpression recorded in shear zones accommodates deformation subsequent to collision between the Congo and Río de la Plata Cratons. The correlation is strengthened by the similarity of magmatic and metamorphic ages in the Coastal Terrane of the Kaoko Belt and the Punta del Este Terrane of the Dom Feliciano Belt. This post-collisional sinistral transpression brought these units near to their final position in Gondwana and explains the different evolution at 550–530 Ma. While in the Kaoko Belt, an extensional episode resulted in exhumation as a consequence of collision in the Damara Belt, in the Dom Feliciano Belt, sinistral transpression occurred associated with the closure of the southern Adamastor Ocean due to Kalahari-Río de la Plata collision.
    Keywords: Dom Feliciano Belt; Kaoko Belt; Brasiliano; Pan-African; Transpressional deformation; Shear Zones ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 77
    Publication Date: 2021-03-29
    Keywords: Eastern Sierras Pampeanas; Provenance; Tectonic setting; Gondwana margin; Geodynamic evolution ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 78
    Publication Date: 2021-03-29
    Description: This study documents the chemical and textural responses of zircon in the Elba igneous complex, with particular reference to the 7- to 7.8-Ma-old Monte Capanne pluton in relation to its coeval volcanic counterpart (Capraia), using BSE imaging and quantitative electron microprobe analyses. The Monte Capanne pluton displays multiple field and geochemical evidence for magma mixing. The samples we have investigated (including monzogranitic, mafic enclave and dyke samples) display similar zircon textures and are associated with an extremely large range of trace and minor element (Hf, Y, HREE, Th, U) compositions, which contrast with relatively simple textures and zoning patterns in zircons from a Capraia dacite. We have used a relatively simple textural classification (patchy zoning, homogenous cores, oscillatory zoning and unzoned zircon) as the basis for discussing the chemical composition and chemical variation within zircons from the Monte Capanne pluton. Based on these data and other works (Dini et al. 2004 in Lithos 78:101–118, 2004) , it is inferred that mixing between metaluminous and peraluminous melts occurred early in the evolution of the Monte Capanne magma chamber. In particular, mixing was responsible for the development of the patchy-zoning texture in the zircon cores, which was associated with reactions between other accessory phases (including monazite, apatite, allanite), which we infer to have significantly affected the Th distribution in zircon. Zircons from the MC pluton displaying “homogeneous cores” have chemical affinities with zircons in the coeval Capraia volcanic system, consistent with the participation of a Capraia-like mantle end-member during mixing. Further zircon growth in the MC pluton produced the oscillatory zoning texture, which records both long-term (crystal fractionation) and transient (recharge with both silicic and mafic magmas) events in a hybrid magma chamber. It is inferred that Hf and the Th/U ratio cannot be used alone to infer magmatic processes due to their dependency on temperature, nor are they a diagnostic feature of xenocrystic grains. This study shows that zircon chemistry coupled with detailed textural analysis can provide a powerful tool to elucidate the complex evolution of a magma system.
    Keywords: Granite petrology; Zircon; Elba; Capraia; Electron microprobe; Magma mixing ; 551 ; Earth Sciences; Mineralogy ; Mineral Resources ; Geology
    Language: English
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  • 79
    Publication Date: 2021-03-29
    Description: The bowing of natural stone panels is especially known for marble slabs. The bowing of granite is mainly known from tombstones in subtropical humid climate. Field inspections in combination with laboratory investigations with respect to the thermal expansion and the bowing potential was performed on two different granitoids (Cezlak granodiorite and Flossenbürg granite) which differ in the composition and rock fabrics. In addition, to describe and explain the effect of bowing of granitoid facade panels, neutron time-of-flight diffraction was applied to determine residual macro- and microstrain. The measurements were combined with investigations of the crystallographic preferred orientation of quartz and biotite. Both samples show a significant bowing as a function of panel thickness and destination temperature. In comparison to marbles the effect of bowing is more pronounced in granitoids at temperatures of 120°C. The bowing as well as the thermal expansion of the Cezlak sample is also anisotropic with respect to the rock fabrics. A quantitative estimate was performed based on the observed textures. The effect of the locked-in stresses may also have a control on the bowing together with the thermal stresses related to the different volume expansion of the rock-forming minerals.
    Keywords: Granitoids; Bowing; Residual strain; Texture; Thermal expansion ; 551 ; Geosciences; Geology
    Language: English
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  • 80
    Publication Date: 2021-03-29
    Description: Multi-isotope study including whole-rock Nd–Sr, single zircon Hf, and SIMS δ18O analyses of zircons sheds light on magma sources in the northernmost Arabian–Nubian Shield (ANS) during ~820–570 Ma. Reconnaissance initial Nd and Sr isotope data for the older rocks (~820–740 Ma) reaffirms previous estimates that early crustal evolution in this part of the shield involved some crustal contamination by pre-ANS material. Prominent isotope provinciality is displayed by post-collisional calc-alkaline and alkaline igneous rocks of ~635–570 Ma across a NW-SE transect across basement of the Sinai Peninsula (Egypt) and southern Israel. Silicic rocks of the NW-region are characterized by lower εNd(T)–εHf(T) and higher Sri and δ18O compared with rocks of the SE-region, and the transition between the regions is gradual. Within each region isotope ratios are independent of the extent of magma fractionation, and zircon cores and rims yield similar δ18O values. Comparison with southern segments of the ANS shows that the source for most ~635–570 Ma rocks can be modeled as the isotopically aged lower-intermediate crust in the ANS core (SE-region) and its northern, more contaminated ANS margins (NW-region). Nevertheless, Nd–Sr isotope enrichment of the lithospheric mantle is indicated by some basic magmas of the NW-region displaying the most enriched Nd–Sr isotope compositions. Comparison of Nd and Hf depleted mantle model ages for rocks of the SE-region may indicate that crustal formation events in the ANS geographical core took place at 1.1–1.2 Ga and were followed by crustal differentiation starting at ~0.9 Ga.
    Keywords: Nd–Sr–Hf–O; Arabian–Nubian Shield; Magma-sources; Zircon ; 551 ; Earth Sciences; Mineralogy ; Mineral Resources ; Geology
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  • 81
    Publication Date: 2021-03-29
    Description: Oligoclase and labradorite crystals have been experimentally replaced by albite in an aqueous sodium silicate solution at 600°C and 2 kbars. The replacement is pseudomorphic and is characterised by a sharp chemical interface which progresses through the feldspar while preserving the crystallographic orientation. Reaction rims of albite, up to 50 μm thick, can be readily achieved within 14 days. Re-equilibration of plagioclase in an 18O-enriched sodium- and silica-bearing solution results in oxygen isotope redistribution within the feldspar framework structure. The observed characteristics of the reaction products are similar to naturally albitised plagioclase and are indicative of an interface-coupled dissolution–reprecipitation mechanism. Chemical analyses demonstrate that the albitisation is accompanied by the mobilisation of major, minor and trace elements also including elements such as Al and Ti which are commonly regarded as immobile during hydrothermal alteration. The results contribute to developing our understanding of the close association between large-scale albitisation and secondary ore mineralisation which is common in nature.
    Keywords: Plagioclase albitisation; Fluid–mineral interaction; Interface-coupled dissolution–reprecipitation; Hydrothermal experiments; Element mobility ; 551 ; Earth Sciences; Mineralogy ; Mineral Resources ; Geology
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  • 82
    Publication Date: 2021-03-29
    Description: The Sierra de San Luis forms the southern tip of the Eastern Sierras Pampeanas in central Argentina. Two narrow belts of low-grade phyllites and quartz arenites, i.e. the San Luis Formation, have accommodated part of the strain-related differential exhumation of the medium- to high-grade metamorphic domains that constitute to the basement complex of the sierra. Eleven phyllite samples were subjected to the K/Ar fine-fraction dating technique. Results are interpreted in relation to the Kübler index of the illites, which indicate epimetamorphic conditions for the majority of the samples. Obtained ages between 330 and 290 Ma cover a period of compressional tectonics in the late Mississippian (Visean/Serpukhovian boundary) followed by the subsidence during the formation of the Paganzo Basin in the provinces of La Rioja and San Luis. These tectonic movements are coincident with the Toco orogeny in northern Chile and southern Bolivia. This suggests that the older K/Ar ages document the compressional stage and that younger ages record the cooling of the basement during the subsequent extensional uplift of the basement.
    Keywords: Eastern Sierras Pampeanas; San Luis Formation; Paganzo Basin; K/Ar; Illite fine fractions ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 83
    Publication Date: 2021-03-29
    Description: A review of the lithostratigraphic units in the Río de la Plata Craton and of new and previously published geochronological, isotopic and geophysical data is presented. Sm–Nd TDM model ages between 2.6 and 2.2 Ga characterize the Piedra Alta Terrane of this craton. Crystallization ages between 2.2 and 2.1 Ga for the metamorphic protoliths and 2.1–2.0 Ga for the post-orogenic granitoids indicate juvenile crust, followed by a short period of crustal recycling. Cratonization of this terrane occurred during the late Paleoproterozoic. Younger overprinting is not observed, suggesting it had a thick and strong lithosphere in the Neoproterozoic. A similar scenario is indicated for the Tandilia Belt of Argentina. Sm–Nd TDM model ages for the Nico Pérez Terrane show two main events of crustal growth (3.0–2.6 and 2.3–1.6 Ga). The crystallization ages on zircon ranges between 3.1 and 0.57 Ga, which is evidence for long-lived crustal reworking. The age for cratonization is still uncertain. In the Taquarembó Block, which is considered the prolongation of the Nico Pérez Terrane in southern Brazil, a similar scenario can be observed. These differences together with contrasting geophysical signatures support the redefinition of the Río de la Plata Craton comprising only the Piedra Alta Terrane and the Tandilia Belt. The Sarandí del Yí Shear Zone is regarded as the eastern margin of this Craton.
    Keywords: Precambrian; Transamazonian cycle; South American platform; Río de la Plata Craton ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
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  • 84
    Publication Date: 2021-03-29
    Keywords: Mud mound; Peloids; Automicrites; Micro-framework; Carboniferous; Spain ; 551 ; Earth Sciences; Ecology; Paleontology; Geochemistry ; Biogeosciences; Sedimentology
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  • 85
    Publication Date: 2021-03-29
    Keywords: Campi Flegrei; Phlegraean fields; Campanian Ignimbrite; Neapolitan Yellow Tuff; Geochemistry; Sr and Nd isotopes; Magma batches; Precursor activity ; 551 ; Geosciences; Sedimentology ; Mineralogy ; Geophysics/Geodesy ; Geology
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  • 86
    Publication Date: 2021-03-29
    Description: The volcaniclastic Tepoztlán Formation (TF) represents an important rock record to unravel the early evolution of the Transmexican Volcanic Belt (TMVB). Here, a depositional model together with a chronostratigraphy of this Formation is presented, based on detailed field observations together with new geochronological, paleomagnetic, and petrological data. The TF consists predominantly of deposits from pyroclastic density currents and extensive epiclastic products such as tuffaceous sandstones, conglomerates and breccias, originating from fluvial and mass flow processes, respectively. Within these sediments fall deposits and lavas are sparsely intercalated. The clastic material is almost exclusively of volcanic origin, ranging in composition from andesite to rhyolite. Thick gravity-driven deposits and large-scale alluvial fan environments document the buildup of steep volcanic edifices. K-Ar and Ar-Ar dates, in addition to eight magnetostratigraphic sections and lithological correlations served to construct a chronostratigraphy for the entire Tepoztlán Formation. Correlation of the 577 m composite magnetostratigraphic section with the Cande and Kent (1995) Geomagnetic Polarity Time Scale (GPTS) suggests that this section represents the time intervall 22.8–18.8 Ma (6Bn.1n-5Er; Aquitanian-Burdigalian, Lower Miocene). This correlation implies a deposition of the TF predating the extensive effusive activity in the TMVB at 12 Ma and is therefore interpreted to represent its initial phase with predominantly explosive activity. Additionally, three subdivisions of the TF were established, according to the dominant mode of deposition: (1) the fluvial dominated Malinalco Member (22.8–22.2 Ma), (2) the volcanic dominated San Andrés Member (22.2–21.3 Ma) and (3) the mass flow dominated Tepozteco Member (21.3–18.8 Ma).
    Keywords: Magnetostratigraphy; K-Ar Geochronology; Volcaniclastics; Miocene; Tepoztlán Formation; Transmexican Volcanic Belt; Central Mexico ; 551 ; Earth Sciences; Sedimentology; Mineralogy; Geophysics/Geodesy; Geology
    Language: English
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  • 87
    Publication Date: 2021-03-29
    Description: The Sierra Ballena Shear Zone (SBSZ) is part of a high-strain transcurrent system that divides the Neoproterozoic Dom Feliciano Belt of South America into two different domains. The basement on both sides of the SBSZ shows a deformation stage preceding that of the transcurrent deformation recognized as a high temperature mylonitic foliation associated with migmatization. Grain boundary migration and fluid-assisted grain boundary diffusion enhanced by partial melting were the main deformation mechanisms associated with this foliation. Age estimate of this episode is 〉658 Ma. The second stage corresponds to the start of transpressional deformation and the nucleation and development of the SBSZ. During this stage, pure shear dominates the deformation, and is characterized by the development of conjugate dextral and sinistral shear zones and the emplacement of syntectonic granites. This event dates to 658–600 Ma based on the age of these intrusions. The third stage was a second transpressional event at about 586 to 〈560 Ma that was associated with the emplacement of porphyry dikes and granites that show evidence of flattening. Deformation in the SBSZ took place, during the late stages, under regional low-grade conditions, as indicated by the metamorphic paragenesis in the supracrustals of the country rocks. Granitic mylonites show plastic deformation of quartz and brittle behavior of feldspar. A transition from magmatic to solid-state microstructures is also frequently observed in syntectonic granites. Mylonitic porphyries and quartz mylonites resulted from the deformation of alkaline porphyries and quartz veins emplaced in the shear zone. Quartz veins reflect the release of silica associated with the breakdown of feldspar to white mica during the evolution of the granitic mylonites to phyllonites, which resulted in shear zone weakening. Quartz microstructures characteristic of the transition between regime 2 and regime 3, grain boundary migration and incipient recrystallization in feldspar indicate deformation under lower amphibolite to upper greenschist conditions (550–400°C). On the other hand, the mylonitic porphyries display evidence of feldspar recrystallization suggesting magmatic or high-T solid-state deformation during cooling of the dikes.
    Keywords: Brasiliano; Pan-African; Shear zone; Dom Feliciano Belt; Uruguay; Kinematic analysis ; 551 ; Earth Sciences; Geology ; Geophysics/Geodesy
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  • 88
    Publication Date: 2021-03-29
    Description: Movement within the Earth’s upper crust is commonly accommodated by faults or shear zones, ranging in scale from micro-displacements to regional tectonic lineaments. Since faults are active on different time scales and can be repeatedly reactivated, their displacement chronology is difficult to reconstruct. This study represents a multi-geochronological approach to unravel the evolution of an intracontinental fault zone locality along the Danube Fault, central Europe. At the investigated fault locality, ancient motion has produced a cataclastic deformation zone in which the cataclastic material was subjected to hydrothermal alteration and K-feldspar was almost completely replaced by illite and other phyllosilicates. Five different geochronological techniques (zircon Pb-evaporation, K–Ar and Rb–Sr illite, apatite fission track and fluorite (U-Th)/He) have been applied to explore the temporal fault activity. The upper time limit for initiation of faulting is constrained by the crystallization age of the primary rock type (known as “Kristallgranit”) at 325 ± 7 Ma, whereas the K–Ar and Rb–Sr ages of two illite fractions 〈2 μm (266–255 Ma) are interpreted to date fluid infiltration events during the final stage of the cataclastic deformation period. During this time, the “Kristallgranit” was already at or near the Earth’s surface as indicated by the sedimentary record and thermal modelling results of apatite fission track data. (U–Th)/He thermochronology of two single fluorite grains from a fluorite–quartz vein within the fault zone yield Cretaceous ages that clearly postdate their Late-Variscan mineralization age. We propose that later reactivation of the fault caused loss of helium in the fluorites. This assertion is supported by geological evidence, i.e. offsets of Jurassic and Cretaceous sediments along the fault and apatite fission track thermal modelling results are consistent with the prevalence of elevated temperatures (50–80°C) in the fault zone during the Cretaceous.
    Keywords: Argillic alteration; Fault zone; K–Ar illite; Apatite fission track; (U–Th)/He thermochronology ; 551 ; Earth Sciences; Geology ; Geophysics/Geodesy
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  • 89
    Publication Date: 2021-03-29
    Keywords: Community-based co-management; Community forestry; Livelihood; Governance; Policy; Mechanism; Participation ; 551 ; Environment; Climate Change; Geology; Oceanography; Geography (general); Regional/Spatial Science; Nature Conservation
    Language: English
    Type: article , publishedVersion
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  • 90
    Publication Date: 2021-03-29
    Description: The application of the SHRIMP U/Pb dating technique to zircon and monazite of different rock types of the Sierras de Córdoba provides an important insight into the metamorphic history of the basement domains. Additional constraints on the Pampean metamorphic episode were gained by Pb/Pb stepwise leaching (PbSL) experiments on two titanite and garnet separates. Results indicate that the metamorphic history recorded by Crd-free gneisses (M2) started in the latest Neoproterozoic/earliest Cambrian (553 and 543 Ma) followed by the M4 metamorphism at ~530 Ma that is documented in the diatexites. Zircon ages of 492 Ma in the San Carlos Massif correlate partly with rather low Th/U ratios (〈0.1) suggesting their growth by metamorphic fluids. This age is even younger than the PbSL titanite ages of 506 Ma. It is suggested that the fluid alteration relates to the beginning of the Famatinien metamorphic cycle in the neighbouring Sierra de San Luis and has not affected the titanite ages. The PTt evolution can be correlated with the plate tectonic processes responsible for the formation of the Pampean orogene, i.e., the accretion of the Pampean basement to the Río de La Plata craton (M2) and the later collision of the Western Pampean basement with the Pampean basement.
    Keywords: Eastern Sierras Pampeanas; Sierras de Córdoba; Pampean and Famatinian cycles; Geodynamic evolution; SHRIMP dating; Titanite and Garnet Pb–Pb step-wise leaching ; 551 ; Earth Sciences; Geology ; Geophysics/Geodesy
    Language: English
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  • 91
    facet.materialart.
    Unknown
    Springer-Verlag | Berlin/Heidelberg
    Publication Date: 2021-04-25
    Description: Aspidochirote holothurian ossicles were discovered in Upper Ordovician-aged Öjlemyr cherts from Gotland, Sweden. The well-preserved material allows definitive assignment to the family Synallactidae, a deep-sea sea cucumber group that is distributed worldwide today. The new taxon Tribrachiodemas ordovicicus gen. et sp. nov. is described, representing the oldest member of the Aspidochirotida. The further fossil record of Synallactidae and evolutionary implications are also discussed.
    Keywords: Echinodermata; Holothuroidea; Ordovician; Sweden; Baltic Sea; Echinodermata; Holothuroidea; Ordovizium; Schweden; Ostsee ; 551 ; Earth Sciences; Paleontology
    Language: English
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  • 92
    Publication Date: 2021-03-29
    Description: The configurational heat capacity, shear modulus and shear viscosity of a series of Na2O–Fe2O3–Al2O3–SiO2 melts have been determined as a function of composition. A change in composition dependence of each of the physical properties is observed as Na2O/(Na2O + Al2O3) is decreased, and the peralkaline melts become peraluminous and a new charge-balanced Al-structure appears in the melts. Of special interest are the frequency dependent (1 mHz–1 Hz) measurements of the shear modulus. These forced oscillation measurements determine the lifetimes of Si–O bonds and Na–O bonds in the melt. The lifetime of the Al–O bonds could not, however, be resolved from the mechanical spectrum. Therefore, it appears that the lifetime of Al–O bonds in these melts is similar to that of Si–O bonds with the Al–O relaxation peak being subsumed by the Si–O relaxation peak. The appearance of a new Al-structure in the peraluminous melts also cannot be resolved from the mechanical spectra, although a change in elastic shear modulus is determined as a function of composition. The structural shear-relaxation time of some of these melts is not that which is predicted by the Maxwell equation, but up to 1.5 orders of magnitude faster. Although the configurational heat capacity, density and shear modulus of the melts show a change in trend as a function of composition at the boundary between peralkaline and peraluminous, the deviation in relaxation time from the Maxwell equation occurs in the peralkaline regime. The measured relaxation times for both the very peralkaline melts and the peraluminous melts are identical with the calculated Maxwell relaxation time. As the Maxwell equation was created to describe the timescale of flow of a mono-structure material, a deviation from the prediction would indicate that the structure of the melt is too complex to be described by this simple flow equation. One possibility is that Al-rich channels form and then disappear with decreasing Si/Al, and that the flow is dominated by the lifetime of Si–O bonds in the Al-poor peralkaline melts, and by the lifetime of Al–O bonds in the relatively Si-poor peralkaline and peraluminous melts with a complex flow mechanism occurring in the mid-compositions. This anomalous deviation from the calculated relaxation time appears to be independent of the change in structure expected to occur at the peralkaline/peraluminous boundary due to the lack of charge-balancing cations for the Al-tetrahedra.
    Keywords: Frequency dependent; Shear modulus; Heat capacity; Silicate melts; Relaxation time ; 551 ; Earth Sciences; Mineral Resources ; Geochemistry ; Mineralogy ; Crystallography
    Language: English
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  • 93
    Publication Date: 2021-03-29
    Description: The giant ignimbrites that erupted from the Cerro Galán caldera complex in the southern Puna of the high Andean plateau are considered to be linked to crustal and mantle melting as a consequence of delamination of gravitationally unstable thickened crust and mantle lithosphere over a steepening subduction zone. Major and trace element analyses of Cerro Galán ignimbrites (68–71% SiO2) that include 75 new analyses can be interpreted as reflecting evolution at three crustal levels. AFC modeling and new fractionation corrected δ18O values from quartz (+7.63–8.85‰) are consistent with the ignimbrite magmas being near 50:50 mixtures of enriched mantle (87Sr/86Sr ~ 0.7055) and crustal melts (87Sr/86Sr near 0.715–0.735). Processes at lower crustal levels are predicated on steep heavy REE patterns (Sm/Yb = 4–7), high Sr contents (〉250 ppm) and very low Nb/Ta (9-5) ratios, which are attributed to amphibolite partial melts mixing with fractionating mantle basalts to produce hybrid melts that rise leaving a gravitationally unstable garnet-bearing residue. Processes at mid crustal levels create large negative Eu anomalies (Eu/Eu* = 0.45–0.70) and variable trace element enrichment in a crystallizing mush zone with a temperature near 800–850°C. The mush zone is repeatedly recharged from depth and partially evacuated into upper crustal magma chambers at times of regional contraction. Crystallinity differences in the ignimbrites are attributed to biotite, zoned plagioclase and other antecrysts entering higher level chambers where variable amounts of near-eutectic crystallization occurs at temperatures as low as 680°C just preceding eruption. 40Ar/39Ar single crystal sanidine weighted mean plateau and isochron ages combined with trace element patterns show that the Galán ignimbrite erupted in more than one batch including a ~ 2.13 Ma intracaldera flow and outflows to the west and north at near 2.09 and 2.06 Ma. Episodic delamination of gravitationally unstable lower crust and mantle lithosphere and injection of basaltic magmas, whose changing chemistry reflects their evolution over a steepening subduction zone, could trigger the eruptions of the Cerro Galán ignimbrites.
    Keywords: Cerro Galán; Puna ignimbrite chemistry; 40Ar/39Ar ages; Delamination; Plateau evolution ; 551 ; Earth Sciences; Sedimentology; Geophysics/Geodesy; Mineralogy; Geology
    Language: English
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  • 94
    Publication Date: 2021-03-29
    Description: The construction suitability of a dimension stone depends on its weathering properties along with the petrology and the petrophysical properties. The aim of this study was to evaluate the suitability of the dimension stones from the “Drei Gleichen” area for construction and replacement purposes. In total, six sandstones (Ingersleben, Wachsenburg, Hindfelden, Seeberg, Röhnberg, Gleichenberg; Upper Triassic) as well as two carbonates (Wachsenburg sinter; Quaternary, Wandersleben dolomite; Middle Triassic) were analysed. The results from our laboratory and on-site studies of the dimension stones show that rocks from the same stratigraphic layer, like the sandstones from the upper Triassic, can show major differences in their petrophysical and weathering properties. These differences are attributed to their different diagenesis, resulting, e.g. in varying pore space, water balance and strength properties. The pore size distribution can be divided into four different groups based on their occurring maxima and micropore content. The determined water balance properties as well as moisture expansion and salt attack depend on these groups. Next to this, the mineralogical composition significantly influences the weathering resistance. Sandstones with a high content of altered lithoclasts show a high amount of moisture expansion, low strength and, in consequence, a low weathering resistance against salt attack. Based on the results of the present study, an evaluation of construction suitability could be accomplished. From the analysed sandstones, only the Seebergen sandstone is suitable for construction purposes due to its good availability, good strength properties (high compressive and tensile strength, low softening degree) as well as a low porosity. Furthermore, the Wachsenburg sandstone also shows good petrophysical and petrological properties, but exploitable deposits are too sparse to be of commercial interest. From the carbonates, the Wachsenburg sinter shows very suitable rock parameters, but only sparse outcrops occur, which are not appropriate for mining.
    Keywords: Dimension stones; Sandstones; Carbonates; Weathering ; 551 ; Earth Sciences; Geology
    Language: English
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  • 95
    Publication Date: 2021-03-29
    Keywords: 551 ; Earth Sciences; Geology
    Language: English
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  • 96
    Publication Date: 2021-03-29
    Description: In the Aztec period and in colonial times different natural stones originating in the Valley of Mexico were used for building construction. Stone weathering was investigated onsite at various historical buildings within the old quarter of Mexico City. In this study, different aspects of weathering and deterioration at three significant historical buildings will be presented, the Aztec excavation site Templo Mayor, the Metropolitan Cathedral, and the colonial palace of the dukes of Heras Soto. Petrophysical properties of the main building stones of these structures were investigated like density, porosity, pore radii distribution, water uptake rate and coefficient, thermal and hygric expansion, and the mechanical properties of uniaxial compressive strength. A relationship between single critical property values, according to anisotropy fabric characteristics, and specific weathering forms could be deduced.
    Keywords: Stone weathering; Mexico-DF; Petrophysical properties; Isotropy–anisotropy; Critical values ; 551 ; Earth Sciences; Geology
    Language: English
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  • 97
    Publication Date: 2021-03-29
    Description: A 782 d solubilization study using not shaken batch experiments and involving one uranium-bearing rock and three natural carbonate minerals was conducted to characterize uranium (U) leaching under oxic conditions. Results showed that aqueous U concentration increased continuously with a solubilization rate of 0.16 mgm-2h-1 for the first 564 d (1.5 y). After 1.5 y, U concentration reached a maximum value (saturation) and decreased afterwards. The saturation concentration of 54 mgL-1 (mean value) was influenced to various extent by the presence of carbonate minerals. Dissolution/precipitation, adsorption or ion exchange processes appear to control U solubilization.
    Keywords: 551
    Language: English
    Type: anthologyArticle , acceptedVersion
    Format: 425-435
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  • 98
    Publication Date: 2021-03-29
    Keywords: Wadi Kafrein; Groundwater modelling; Model calibration; Arid and semiarid areas ; 551 ; Earth Sciences; Geology
    Language: English
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  • 99
    Publication Date: 2021-04-24
    Description: The northern German Lower Cretaceous Bückeberg Formation yields numerous dinosaur tracksites, some of which have produced material of impressive quality. Stratigraphically, the localities are concentrated in the Obernkirchen Sandstone, a thin subunit within this formation. The Obernkirchen Sandstone represents mainly a sandy barrier to back-barrier and lagoonal setting within a limnic deltaic facies complex, which was deposited during the late Berriasian (Cypridea alta formosa ostracod subzone) in the southeast of the Lower Saxony Basin, northwest Germany. A few tracksites occur more proximally in coeval fluvial deposits. Dinosaur footprint assemblages were left by ornithopods, theropods, sauropods, ankylosaurs, and small, bipedal ornithischians. Other vertebrate tracks are those of turtles and, possibly, crocodilians. Due to the decrease in sandstone quarrying in recent decades, many old tracksites are inaccessible today. Additionally, historical descriptions of the tracks were of highly variable quality and often published in remote and today nearly unobtainable sources. Here we provide a catalogue of 13 tracksites compiled from the literature and some new observations. Of these 13 tracksites, only five are still accessible and currently under study. Descriptions of each locality are provided, with a comprehensive compilation of existing data on lithofacies, stratigraphy, palaeogeography and palaeoecology of the Obernkirchen Sandstone and equivalent strata. A short review of the track-bearing lithofacies assemblage indicates that the outcrop areas have distinctly different facies and environments, and, therefore, track-bearing horizons can only be correlated stratigraphically between adjacent outcrops. For this reason, the identification of a megatracksite in the Obernkirchen Sandstone is currently regarded as premature and uncertain.
    Keywords: Vertebrate tracks; Dinosauria; Cretaceous; Berriasian; Obernkirchen; Münchehagen; Germany; Wirbeltier-Fährten; Dinosauria; Kreide; Berriasium; Obernkirchen; Münchehagen; Deutschland ; 551 ; Earth Sciences; Paleontology
    Language: English
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  • 100
    facet.materialart.
    Unknown
    Springer-Verlag Berlin Heidelberg | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: Many of the reasons behind the anthropogenic contamination problems in rural environments of developing countries lie in changes in the traditional way of life and the ignorance on the toxic potential of introduced manufactured products. A generalization trend exists within the international community suggesting that water in developing countries is of poor quality. However, the water quality is rarely analytically determined. Existing potabilization solutions may be prohibitively expensive for the rural populations. Therefore, efficient and affordable technologies are still needed to ameliorate the water quality. In the recent two decades,elemental iron has shown the capacity to remove all possible contaminants (including viruses) from the groundwater. This paper presents a concept to scale down the conventional iron barrier technology to meet the requirements of small communities and households in rural environments worldwide.
    Keywords: 551 ; VJF 000 ; 38.32
    Language: English
    Type: anthologyArticle , acceptedVersion
    Format: 121-130
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