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  • Organic Chemistry  (68,964)
  • Analytical Chemistry and Spectroscopy  (25,033)
  • Engineering  (12,632)
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  • 1
    facet.materialart.
    Unknown
    Publication Date: 2024-07-09
    Description: Der Kapuzinersandstein ist ein gelblich brauner bis tief dunkelrotbrauner Sandstein, der in einem eng begrenzten Gebiet am westlichen Rheingrabenrand bei Grünstadt/ Pfalz vorkommt. Es handelt sich um einen verfestigten Meeressand aus der Alzey-Formation des Oligozäns. Das Vorkommen beschränkt sich auf wenige Abbaustellen, deren Gewinnungstätigkeit seit etwa hundert Jahren erloschen ist. Die Körnungslinie der Sandsteine und die durch Eisen(hydr-)oxide verursachte Kornbindung ist erheblichen Schwankungen unterworfen. Hauptbestandteile sind Quarz und Gesteinsbruchstücke. Siliziumoxid und Eisenoxide machen mehr als 95 % der chemischen Zusammensetzung aus. Zahlreiche Profan- und Sakralbauten sowie die Burgruine Battenberg wurden unter teilweiser oder ausschließlicher Verwendung von Kapuzinersandstein errichtet.
    Description: Abstract: The yellowish-brown to dark red-brown coloured Kapuziner sandstone occurs within a small confined area at the western border of the Upper Rhine Graben near Grünstadt/Palatinate. It is considered as a coastal marine formation of Tertiary age (Alzey Formation, Oligocene). The extraction as a building stone ceased almost a hundred years ago and only a few relics of quarries are left today. The grain size of the sandstone varies on a large scale as well as the mechanical stability. Main components are quartz and rock fragments. Silicon oxide and iron oxides contribute more than 95 % to the chemical composition of the sedimentary rock. Multiple secular and sacred buildings as well as the Battenberg Castle have been erected partially or completely using Kapuziner sandstone .
    Description: research
    Keywords: ddc:553.53 ; Sandstein ; Pfalz ; Oberrheingraben ; Petrographie ; Geochemie ; Architektur ; Werkstein
    Language: German
    Type: doc-type:article , publishedVersion
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  • 2
    facet.materialart.
    Unknown
    Reimer
    In:  Herausgeberexemplar
    Publication Date: 2024-07-02
    Description: Über den paläozoischen Sedimenten im Dakhla-Becken folgen überwiegend fluvio-kontinentale Sedimente des Mesozoikums, die sich aufgrund ihrer gleichartigen Ausbildung innerhalb des Beckens in Ost-West-Erstreckung verfolgen lassen. Die pauschal als "Nubischer Sandstein" bezeichneten klastischen Sedimente konnten in sechs Formationen gegliedert und ihre strati graphische Stellung weitgehend gesichert werden. Die Einheiten der Nubischen Gruppe heißen von unten nach oben: Six Hills Formation (Basal Clastics), Abu Ballas Formation (Lingula Shale), Sabaya Formation (Desert Rose Beds), Maghrabi Formation (Plant Beds), Taref Formation (Taref Sandstein) und Mut Formation (Variegated Shales). Sie sind fast ausschließlich der Kreide bis zum Maastricht zugehörig. Der Sedimentationsraum gehört zu einem sich nach Nordwesten vertiefenden Becken zwischen der Calanscio-Uweinat-Schwelle im Westen und dem Kharga-Upl ift im Osten. Die Sandstein-Formationen bestehen in der Körnerfraktion ausschließlich aus Quarz, Zirkon, Turmalin, Rutil und Leukoxen und zeigen bei den Tonmineralen eine absolute Kaolinitvormacht. Die überwiegend tonigen Formationen, mit unterschiedlichen Tonmineral-Vergesellschaffungen, deuten auf eine Sedimentation in einem flachen Epikontinentalmeer hin. Die Sedimente der Nubischen Gruppe entstammen Gebieten mit lateritischer Verwitterung. Die Resedimentation erfolgte unter gleichen Klimabedingungen, wie synsedimentäre Bodenbildung und Sesquioxid-Krusten zeigen. Die Faktoren-Analyse ergab folgende Elementgruppen: Ti, Nb, Zr und Cr: Elemente, die überwiegend in Schwermineralen auftreten ; Mn, Co, Ni und Cu: adsorptiv an Mn gebunden und in manganreichen Krusten angereichert ; Y, SE; an Tonminerale angelagerte Elemente ; Ca, Sr, Rb und Pb: an Tonminerale gebundene Elemente. Eisen konnte keiner dieser Gruppen zugeordnet werden. Da die fünf Elementgruppen in den Formationen der Nubischen Gruppe charakteristisch verteilt sind, ist eine Unterscheidung der Formationen aufgrund der Elementverteilung möglich.
    Description: The Paleozoic sediments within the Dakhla Basin are overlain by fluvio-continental sediments of Mesozoic age which can be traced in the. basin in east-west extension caused by their similar development. The clastic sediments, generally called "Nubian Sandstone", could be subdivided into six formations and their: stratigraphic position could be more or less assured. The units of the Nubia Group are named from the bottom towards the top as follows: Six Hills Formation (Basal Clastic Unit), Abu Ballas Formation (Lingula Shale Unit), Sabaya Formation (Desert Rose Unit), Maghrabi Formation (Plant Bed Unit), Taref Formation (Taref Sandstone Unit), and Mut Formation (Variegated Shale Unit). Stratigraphically they are nearly exclusively of Cretaceous up to Maastrichtian age. The area of sedimentation is a basin between the Calanscio-Uweinat Uplift in the west and the Kharga Uplift in the east. The bottom of the basin dips towards the northwest. The more sandy units contain as grains exclusively quartz, zircone, turmaline, rutile and leocoxene. The same units show as a clay-mineral an absolute predominance of kaolinite. The chiefly clayey units with a different association of clayminerals point at a sedimentation in a shallow epicontinental sea. The sediments of the Nubia Group are descended from regions with a lateritic weathering. The resedimentation took place under the same climatic conditions as it is shown by syn sedimentary development of soil horizons and sesquioxide crusts. The factor analysis caused the following groups of elements: Ti, Nb, Zr and Cr: elements which occur mainly in heavy minerals ; Mn, Co, Ni and Cu: elements which are bound adsorptively at Mn and are concentrated in crusts with a high content of manganese ; Y and R.E.E.: elements which are attached to clayminerals ; Ca, Sr, Rb and Pb: elements which are bound at clayminerals. Iron could not be associated with one of these groups. As the five groups of elements are distributed characteristically in the units of the Nubia Group, a differentiation of the units is possible based on the dissamination of the elements.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:551 ; Nubischer Sandstein ; Stratigraphie ; Geochemie ; Sedimentologie
    Language: German
    Type: doc-type:book
    Format: 93
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  • 3
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    Unknown
    Berlin: Reimer
    In:  Herausgeberexemplar
    Publication Date: 2024-04-18
    Description: Anatektische Schmelzen haben bei der Entstehung granitischer bis dioritischer Magmen in der Erdkruste eine entscheidende Bedeutung. Die große Tiefe und breite Ausdehnung, in der sich sialische Granitisations-Prozesse vollziehen, bedingen aber auch die Seltenheit ihres Aufschlusses an der Erdoberfläche. An Stelle dieser Übergänge metamorph -〉 magmatisch in situ (ERDMANNSDÖRFFER, 1948) wurden daher stets die wesentlich kleinräumigeren Erscheinungen in Migmatiten untersucht. Man ging dabei von der Voraussetzung aus, daß diese als "Modell Systeme" anzusehen sind (MEHNERT, 1968/71). Die meisten geochemischen Untersuchungen zu diesem Thema berücksichtigten bisher nur die Hauptelemente. Angaben über Spurenelement-Konzentrationen basieren meist nur auf wenigen Einzelanalysen. Als Grundlage der hier vorgelegten Zusammenfassung geochemischer Daten zur Migmatitgenese dienten im wesentlichen die petrologischen Untersuchungen anatektischer Gesteine von MEHNERT und von BÜSCH (Zitate im Text). Diese Basis wurde durch Hinzunahme von neueren Literaturdaten erweitert. Die Analyse einer möglichst großen Anzahl von Einzelproben von Gneisen, Leukosomen und Melanosomen auf Haupt-, Neben- und Spurenelemente und die Berücksichtigung der Auswirkungen der Streuungen erbrachte neue Erkenntnisse…
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:552.4 ; ddc:551.9 ; Geochemie ; Migmatit ; Schwarzwald
    Language: German
    Type: doc-type:book
    Format: 82
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  • 4
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    Springer Nature
    Publication Date: 2024-04-16
    Description: The objective of this book is to help at-risk organizations to decipher the “safety cloud”, and to position themselves in terms of operational decisions and improvement strategies in safety, considering the path already travelled, their context, objectives and constraints. What link can be established between safety culture and safety models in order to increase safety within companies carrying out dangerous activities? First, while the term “safety culture” is widely shared among the academic and industrial world, it leads to various interpretations and therefore different positioning when it comes to assess, improve or change it. Many safety theories, concepts, and models coexist today, being more or less appealing and/or directly useful to the industry. How, and based on which criteria, to choose from the available options? These are some of the questions addressed in this book, which benefits from the expertise of its worldwide famous authors in several industrial sectors.
    Keywords: Engineering ; Quality control ; Reliability ; Industrial safety ; Economic sociology ; Industrial psychology ; Industrial organization ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology::JHBL Sociology: work and labour ; thema EDItEUR::J Society and Social Sciences::JM Psychology::JMJ Occupational and industrial psychology ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics::KCD Economics of industrial organization ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering::TGPR Reliability engineering
    Language: English
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  • 5
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    Unknown
    CLACSO
    Publication Date: 2024-04-14
    Description: Description not available.
    Keywords: Technology ; Engineering ; Political Science ; thema EDItEUR::U Computing and Information Technology::UB Information technology: general topics::UBW Internet: general works ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPH Political structure and processes::JPHV Political structures: democracy
    Language: Spanish
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  • 6
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    Unknown
    Springer Nature
    Publication Date: 2024-04-11
    Description: Automatisiertes Fahren wird aktuell auf allen Ebenen diskutiert. Dieses Open Access Buch greift das Thema aus Sicht des ÖPNV auf und stellt Chancen und Risiken des Einsatzes automatisierter Shuttlebusse im Nahverkehr dar. Am Beispiel Bad Birnbach/Niederbayern wird gezeigt, welche Herausforderungen bei der Einführung eines solchen Services zu erwarten sind und wie diese gelöst werden können. Dabei fokussiert sich das Buch auf die Vermittlung von im Feld erhobenen Daten, z.B. zu technischen Schwierigkeiten, Erfahrungsberichten von Anwohnern und Gästen, Akzeptanz in der Bevölkerung, infrastrukturellen Anforderungen, etc. Konkrete Handlungsempfehlungen für Städteplaner, ÖPNV-Betreiber/-Strategen oder Kommunen, die eine Einführung automatisierter Busse in Erwägung ziehen, runden das Werk ab.
    Keywords: Engineering ; Automotive engineering ; Transportation engineering ; Traffic engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNH Highway and traffic engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TR Transport technology and trades::TRC Automotive technology and trades
    Language: German
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  • 7
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    Unknown
    Springer Nature
    Publication Date: 2024-04-11
    Description: This open access book comprises 10 high-level papers on research and innovation within the Flexitranstore Project that were presented at the FLEXITRANSTORE special session organized as part of the 21st International Symposium on High Voltage Engineering. FLEXITRANSTORE (An Integrated Platform for Increased FLEXIbility in smart TRANSmission grids with STORage Entities and large penetration of Renewable Energy Sources) aims to contribute to the development of a pan-European transmission network with high flexibility and high interconnection levels. This will facilitate the transformation of the current energy production mix by hosting an increasing share of renewable energy sources. Novel smart grid technologies, control and storage methods, and new market approaches will be developed, installed, demonstrated, and tested introducing flexibility to the European power system. FLEXITRANSTORE is developing a next-generation Flexible Energy Grid (FEG) that will be integrated into the European Internal Energy Market (IEM) through the valorization of flexibility services. This FEG addresses the capabilities of a power system to maintain continuous service in the face of rapid and large swings in supply or demand. As such, a wholesale market infrastructure and new business models within this integrated FEG must be upgraded for network players, and offer incentives for new ones to join, while at the same time demonstrating new business perspectives for cross-border resource management and energy trading.
    Keywords: Engineering ; Power electronics ; Electronics ; Microelectronics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering
    Language: English
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  • 8
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    Unknown
    Emerald Publishing | ICE Publishing
    Publication Date: 2024-04-11
    Description: The ebook edition of this title is Open Access and freely available to read online. Specification for Tunnelling, Fourth edition is a standard industry document for tunnelling contracts and forms the basis of tunnelling specifications for projects throughout the world. It reflects current industry best practice and considers technological advancements over the last ten years. It also investigates a range of new topics. Since the publication of the third edition in 2010, the British tunnelling industry has completed several major projects both domestic and abroad. This updated fourth edition captures the many advances made in the field of tunnelling and the lessons learned on these projects through a comprehensive review of all content by subject matter experts. The importance of sustainability and the increased market share of low CO2e materials have been reflected by removal of prescriptive requirements and a strong emphasis on performance-based specification. All references to codes, standards and other design documents have been comprehensively updated. Drafted by an expert editorial committee and supported by multiple rounds of industry-wide peer reviews, the Specification for Tunnelling in its fourth edition will continue to be the de facto standard reference work for tunnelling in the UK and worldwide.
    Keywords: Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building ; thema EDItEUR::L Law::LN Laws of specific jurisdictions and specific areas of law::LNC Company, commercial and competition law: general::LNCQ Construction and engineering law ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building ; thema EDItEUR::L Law::LN Laws of specific jurisdictions and specific areas of law::LNC Company, commercial and competition law: general::LNCQ Construction and engineering law ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials
    Language: English
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  • 9
    Publication Date: 2024-04-11
    Description: This book covers new advances in the field of impedance spectroscopy including fundamentals, methods and applications. It releases selected extended and peer reviewed scientific contributions from the International Workshop on Impedance Spectroscopy (IWIS 2017) focussing on detailed information about recent scientific research results in electrochemistry and battery research, bioimpedance measurement, sensors, system design, signal processing.
    Keywords: TA1-2040 ; International Workshop on Impedance Spectroscopy ; Engineering ; Electrochemistry and Battery Research ; Bioimpedance Measurement ; Sensors ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
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  • 10
    Publication Date: 2024-04-11
    Description: Este libro indaga desde múltiples preguntas y perspectivas las transformaciones provocadas por el incremento descomunal del flujo de información generada por el uso masivo e intensivo de las tecnologías digitales. El estudio de las apropiaciones por parte de la sociedad configura un mosaico desigual y combinado de usos y empleos de las tecnologías digitales. ¿Cómo han impactado en los grupos sociales, económicos y generacionales los usos de las tecnologías? ¿Que desafíos entrañan y que problemas nuevos generan las herramientas cotidianas a través de las cuales conocemos y nos comunicamos con nuestro entorno y el mundo?
    Keywords: Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering
    Language: Spanish
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