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  • English  (2,629)
  • German  (1,368)
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  • 2005-2009  (3,979)
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  • 1
    Call number: AWI Bio-24-95729
    Type of Medium: Monograph available for loan
    Pages: XIV, 354 Seiten , Illustrationen
    ISBN: 0195154312 , 9780195154313 , 978-0-19-515431-3
    Series Statement: Long-Term Ecological Research Network Series
    Language: English
    Note: Contents Contributors Part I. Alaska's Past and Present Environment 1. The Conceptual Basis of LTER Studies in the Alaskan Boreal Forest / F. Stuart Chapin III, john Yarie, Keith Van Cleve, and Leslie A. Viereck 2. Regional Overview of Interior Alaska / James E. Beget, David Stone, and David L Verbyla 3. State Factor Control of Soil Formation in Interior Alaska / Chien-Lu Ping, Richard D. Boone, Marcus H. Clark, Edmond C. Packee, and David K. Swanson 4. Climate and Permafrost Dynamics of the Alaskan Boreal Forest / Larry D. Hinzman, Leslie A. Viereck, Phyllis C. Adams, Vladimir E. Romanovsky, and Kenji Yoshikawa 5. Holocene Development of the Alaskan Boreal Forest / Andrea H. Lloyd, Mary E. Edwards, Bruce P. Finney, Jason A. Lynch, Valerie Barber, and Nancy H. Bigelow Part II. Forest Dynamics 6. Floristic Diversity and Vegetation Distribution in the Alaskan Boreal Forest / F. Stuart Chapin III, Teresa Hollingsworth, David F. Murray, Leslie A. Viereck, and Marilyn D. Walker 7. Successional Processes in the Alaskan Boreal Forest / F. Stuart Chapin III, Leslie A. Viereck, Phyllis C. Adams, Keith Van Cleve, Christopher L. Fastie, Robert A. Ott, Daniel Mann, and Jill F. Johnstone 8. Mammalian Herbivore Population Dynamics in the Alaskan Boreal Forest / Eric Rexstad and Knut Kielland 9. Dynamics of Phytophagous Insects and Their Pathogens in Alaskan Boreal Forests / Richard A. Werner, Kenneth F. Raffa, and Barbara L. Illman 10. Running Waters of the Alaskan Boreal Forest / Mark W. Oswood, Nicholas F. Hughes, and Alexander M. Milner Part III. Ecosystem Dynamics 11. Controls over Forest Production in Interior Alaska / John Yarie and Keith Van Cleve 12. The Role of Fine Roots in the Functioning of Alaskan Boreal Forests / Roger W. Ruess, Ronald L. Hendrick, Jason C. Vogel, and Bjartmar Sveinbjornsson 13. Mammalian Herbivory, Ecosystem Engineering, and Ecological Cascades in Alaskan Boreal Forests / Knut Kielland, John P. Bryant, and Roger W. Ruess 14. Microbial Processes in the Alaskan Boreal Forest / Joshua P. Schimel and F. Stuart Chapin III 15. Patterns of Biogeochemistry in Alaskan Boreal Forests / David W. Valentine, Knut Kielland, F. Stuart Chapin III, A. David McCuire, and Keith Van Cleve Part IV. Changing Regional Processes 16. Watershed Hydrology and Chemistry in the Alaskan Boreal Forest: The Central Role of Permafrost / Larry D. Hinzman, W. Robert Bolton, Kevin C. Petrone, Jeremy B. Jones, and Phyllis C. Adams 17. Fire Trends in the Alaskan Boreal Forest / Eric S. Kasischke, T. Scott Rupp, and David L. Verbyla 18. Timber Harvest in Interior Alaska / Tricia L. Wurtz, Robert A. Ott, and John C. Maisch 19. Climate Feedbacks in the Alaskan Boreal Forest / A. David McCuire and F. Stuart Chapin III 20. Communication of Alaskan Boreal Science with Broader Communities / Elena B. Sparrow, Janice C. Dawe, and F. Stuart Chapin III 21. Summary and Synthesis: Past and Future Changes in the Alaskan Boreal Forest / F. Stuart Chapin III, A. David McCuire, Roger W. Ruess, Marilyn W. Walker, Richard D. Boone, Mary E. Edwards, Bruce P. Finney, Larry D. Hinzman, Jeremy B. Jones, Clenn P. Juday, Eric S. Kasischke, Knut Kielland, Andrea H. Lloyd, Mark W. Oswood, Chien-Lu Ping, Eric Rexstad, Vladimir E. Romanovsky, Joshua P. Schimel, Elena B. Sparrow, Bjartmar Sveinbjornsson, David W. Valentine, Keith Van Cleve, David L. Verbyla, Leslie A. Viereck, Richard A. Werner, Tricia L. Wurtz, and John Yarie Index
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    [Dordrecht [u.a.]] : Springer
    Type of Medium: Monograph available for loan
    Pages: XVIII, 831 S. , Illustrationen , 193 x 260 mm
    Edition: 2. ed. Softcover reprint of the original 2nd ed. 2009
    ISBN: 9789402404470 , 9402404473
    Language: English
    Branch Library: GFZ Library
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  • 3
    Publication Date: 2024-05-23
    Description: Eine erste taxonomische Übersicht der bisher unbeschriebenen Taphoflora aus dem Unterrotliegend (Oberkarbon – Unterperm) von Niedermoschel bei Alsenz (Saar-Becken-Becken, SW-Deutschland) wird vorgestellt. Die Flora umfasst nach aktuellem Kenntnisstand folgende Taxa: Lepidostrobophyllum sp., Sphenophyllum thoniiMAHR, Sphenophyllum cf. oblongifolium (GERMAR & KAULFUSS) UNGER, Sphenophyllum spp. (unbest. Achsen), Annularia spinulosa STERNBERG, Annularia spicata (GUTBIER) SCHIMPER, Asterophyllites equisetiformis (SCHLOTHEIM ex STERNBERG) BRONGNIART, Asterophyllites longifolius (STERNBERG) BRONGNIART, cf. Palaeostachya sp., Calamites spp., Scolecopteris cf. arborescens (SCHLOTHEIM ex BRONGNIART) STUR, Pecopteris (Scolecopteris) cf. oreopteridia (SCHLOTHEIM) BRONGNIART, Pecopteris (Scolecopteris) candolleana BRONGNIART, Pecopteris (Scolecopteris) cf. densifolia GÖPPERT, Pecopteris monyi ZEILLER, Pecopteris spp. indet, Remia pinnatifida (GUTBIER) KNIGHT, Asterotheca sternbergii (GÖPPERT) STUR, Crossotheca sp., Autunia conferta (STERNBERG) KERP, Rhachiphyllum schenkii (HEYER) KERP, Dicksonites pluckenetii (SCHLOTHEIM ex STERNBERG) STERZEL, cf. Neurodontopteris auriculata (BRONGNIART) POTONIÉ, Cordaites sp., Coniferae indet., Gomphostrobus bifidus (GEINITZ) POTONIÉ, cf. Dicranophyllum gallicum GRAND´EURY sowie verschiedene, nicht näher bestimmbare karpologische Reste, Wurzeln und Problematika. Die Flora repräsentiert damit eine der diversesten, bisher bekannt gewordenen Floren aus dem Unteren Rotliegend des Saar-Nahe-Beckens. Basierend auf der taxonomischen Zusammensetzung und der autökologischen Interpretation der nachgewiesenen Taxa wird die Taphoflora als eine allochthone Vermischung mindestens zweier Vegetationseinheiten gedeutet: der ufernahen, feuchtigkeitsliebenden Vegetation (deren Reste die Taphoflora dominieren) und der Vegetation des eher trockeneren Hinterlandes.
    Description: Abstract: A first taxonomic survey of the so far undescribed taphoflora from the Lower Rotliegend (Upper Carboniferous – Lower Permian) of Niedermoschel near Alsenz (Saar-Nahe basin, Southwest Germany) is presented. The following taxa have been identified so far: Lepidostrobophyllum sp., Sphenophyllum thoniiMAHR, Sphenophyllum cf. oblongifolium (GERMAR & KAULFUSS) UNGER, Sphenophyllum spp., Annularia spinulosa STERNBERG, Annularia spicata (GUTBIER) SCHIMPER, Asterophyllites equisetiformis (SCHLOTHEIM ex STERNBERG) BRONGNIART, Asterophyllites longifolius (STERNBERG) BRONGNIART , cf. Palaeostachya sp., Calamites spp., Scolecopteris cf. arborescens (SCHLOTHEIM ex BRONGNIART) STUR, Pecopteris (Scolecopteris) cf. oreopteridia (SCHLOTHEIM) BRONGNIART, Pecopteris (Scolecopteris) candolleana BRONGNIART, Pecopteris (Scolecopteris) cf. densifolia GÖPPERT, Pecopteris monyi ZEILLER, Pecopteris spp. indet, Remia pinnatifida (GUTBIER) KNIGHT, Asterotheca sternbergii (GÖPPERT) STUR, Crossotheca sp., Autunia conferta (STERNBERG) KERP, Rhachiphyllum schenkii (HEYER) KERP, Dicksonites pluckenetii (SCHLOTHEIM ex STERNBERG) STERZEL, cf. Neurodontopteris auriculata (BRONGNIART) POTONIÉ, Cordaites sp., Coniferae indet., Gomphostrobus bifidus (GEINITZ) POTONIÉ, cf. Dicranophyllum gallicum GRAND´EURY, as well as several unidentified carpological remains, roots and problematics. Thus this flora represents one of the most diverse (in terms of species richness) floras from the Lower Rotliegend of the Saar-Nahe basin. Based on the taxonomic composition and autecological interpretations of the taxa this flora is interpretated to represent an allochthonous mix of at least two different source vegetation types: i.e. from the vegetation of wet environments (dominating the assemblage) and the vegetation of the more dry Hinterland.
    Description: 1. Einleitung 2. Geologie und Material 3. Die Flora 3.1. Lycopsiden 3.2. Sphenopsiden 3.2.1. Calamiten 3.2.2. Sphenophyllen 3.3. Farne 3.4. Pteridospermen 3.4.1. Peltaspermaceen 3.4.2. Callistophytaceen 3.4.3. Medullosaceen 3.5. Cordaiten 3.6. Koniferen 3.7. „Koniferophyten“ 3.8. Incertae sedis und Problematika 4. Taphonomie und Ökologie Schriften
    Description: research
    Keywords: ddc:561 ; Saar-Nahe-Becken ; Rotliegend ; Paläobotanik
    Language: German
    Type: doc-type:article , publishedVersion
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  • 4
    Publication Date: 2024-04-19
    Description: This paper reports on the results of an independent evaluation of the techniques presented in the VLDB 2007 paper "Scalable Semantic Web Data Management Using Vertical Partitioning", authored by D. Abadi, A. Marcus, S. R. Madden, and K. Hollenbach [1]. We revisit the proposed benchmark and examine both the data and query space coverage. The benchmark is extended to cover a larger portion of the query space in a canonical way. Repeatability of the experiments is assessed using the code base obtained from the authors. Inspired by the proposed vertically-partitioned storage solution for RDF data and the performance figures using a column-store, we conduct a complementary analysis of state-of-the-art RDF storage solutions. To this end, we employ MonetDB/SQL, a fully-functional open source column-store, and a well-known -- for its performance -- commercial row-store DBMS. We implement two relational RDF storage solutions -- triple-store and vertically-partitioned -- in both systems. This allows us to expand the scope of [1] with the performance characterization along both dimensions -- triple-store vs. vertically-partitioned and row-store vs. column-store -- individually, before analyzing their combined effects. A detailed report of the experimental test-bed, as well as an in-depth analysis of the parameters involved, clarify the scope of the solution originally presented and position the results in a broader context by covering more systems.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 5
    Publication Date: 2024-04-19
    Description: By leveraging modern networking hardware (RDMA-enabled network cards), we can shift priorities in distributed database processing significantly. Complex and sophisticated mechanisms to avoid network traffic can be replaced by a scheme that takes advantage of the bandwidth and low latency offered by such interconnects. We illustrate this phenomenon with cyclo-join, an efficient join algorithm based on continuously pumping data through a ring-structured network. Our approach is capable of exploiting the resources of all CPUs and distributed main-memory available in the network for processing queries of arbitrary shape and datasets of arbitrary size.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 6
    Publication Date: 2024-04-19
    Description: This paper presents our experiences in porting the Sloan Digital Sky Survey(SDSS)/ SkyServer to the state-of- the-art open source database system MonetDB/SQL. SDSS acts as a well-documented benchmark for scientific database management. We have achieved a fully functional prototype for the personal SkyServer, to be downloaded from our site. The lessons learned are 1) the column store approach of MonetDB demonstrates a great potential in the world of scientific databases. However, the application also challenged the functionality of our implementation and revealed that a fully operational SQL environment is needed, e.g. including persistent stored modules; 2) the initial performance is competitive to the reference platform, MS SQL Server 2005, and 3) the analysis of SDSS query traces hints at several techniques to boost performance by utilizing repetitive behavior and zoom-in/zoom-out access patterns, that are currently not captured by the system.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 7
    Publication Date: 2024-04-19
    Description: Stream applications gained significant popularity over the last years that lead to the development of specialized stream engines. These systems are designed from scratch with a different philosophy than nowadays database engines in order to cope with the stream applications requirements. However, this means that they lack the power and sophisticated techniques of a full fledged database system that exploits techniques and algorithms accumulated over many years of database research. In this paper, we take the opposite route and design a stream engine directly on top of a database kernel. Incoming tuples are directly stored upon arrival in a new kind of system tables, called baskets. A continuous query can then be evaluated over its relevant baskets as a typical one-time query exploiting the power of the relational engine. Once a tuple has been seen by all relevant queries/operators, it is dropped from its basket. A basket can be the input to a single or multiple similar query plans. Furthermore, a query plan can be split into multiple parts each one with its own input/output baskets allowing for flexible load sharing query scheduling. Contrary to traditional stream engines, that process one tuple at a time, this model allows batch processing of tuples, e.g., query a basket only after x tuples arrive or after a time threshold has passed. Furthermore, we are not restricted to process tuples in the order they arrive. Instead, we can selectively pick tuples from a basket based on the query requirements exploiting a novel query component, the basket expressions. We investigate the opportunities and challenges that arise with such a direction and we show that it carries significant advantages. We propose a complete architecture, the DataCell, which we implemented on top of an open-source column-oriented DBMS. A detailed analysis and experimental evaluation of the core algorithms using both micro benchmarks and the standard Linear Road benchmark demonstrate the potential of this new approach.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 8
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    Boca Raton, FL : CRC Press
    Call number: 9781420073072 (e-book)
    Description / Table of Contents: As we discover more about the role of the ocean in global changes and identify the effects of global change on the ocean, understanding its chemical composition and processes becomes increasingly paramount. However, understanding these processes requires a wide range of measurements in the vast ocean, from the sea surface to deep-ocean trenches, from the tropics to the poles. Practical Guidelines for the Analysis of Seawater provides a common analytical basis for generating quality-assured and reliable data on chemical parameters in the ocean. A source of practical know-how, the book covers sampling and storage, analytical methodology, and guidelines and procedures for quality assurance. It presents analytical methods with the step-by-step procedures that help practitioners implement these methods successfully into the laboratory, making them instantly applicable without consulting further literature. The book also contains essential information for developing or improving quality control and quality assurance programs in the laboratory. It includes the availability and measurement of standard reference materials, blank estimation and correction, control of recoveries, and statistical evaluation of quality assurance data. Analytical chemistry is a very active and fast moving area. Despite the development of innovative new analytical techniques for chemical trace element research, obtaining reliable data at ultra-trace levels remains a formidable challenge. A complete and practical guide, this book delineates proven methods that consistently yield reproducible data in routine work.
    Type of Medium: 12
    Pages: 1 Online-Ressource (xii, 401 Seiten) , Illustrationen, Diagramme
    ISBN: 978-1-4200-7307-2 , 9781420073072
    Series Statement: Environmental science and technology
    Language: English
    Note: Contents Preface Editor Contributors Chapter 1 Sampling and Sample Treatments / Oliver Wurl Chapter 2 Analysis of Dissolved and Particulate Organic Carbon with the HTCO Technique / Oliver Wurl and Tsai Min Sin Chapter 3 Spectrophotometric and Chromatographic Analysis of Carbohydrates in Marine Samples / Christos Panagiotopoulos and Oliver Wurl Chapter 4 The Analysis of Amino Acids in Seawater / Thorsten Dittmar, Jennifer Cherrier, and Kai-Uwe Ludwichowski Chapter 5 Optical Analysis of Chromophoric Dissolved Organic Matter / Norman B. Nelson and Paula G. Coble Chapter 6 Isotope Composition of Organic Matter in Seawater / Laodong Guo and Ming-Yi Sun Chapter 7 Determination of Marine Gel Particles / Anja Engel Chapter 8 Nutrients in Seawater Using Segmented Flow Analysis / Alain Aminot, Roger Kérouel, and Stephen C. Coverly Chapter 9 Dissolved Organic and Particulate Nitrogen and Phosphorous / Gerhard Kattner Chapter 10 Pigment Applications in Aquatic Systems / Karen Helen Wiltshire Chapter 11 Determination of DMS, DMSP, and DMSO in Seawater / Jacqueline Stefels Chapter 12 Determination of Iron in Seawater / Andrew R. Bowie and Maeve C. Lohan Chapter 13 Radionuclide Analysis in Seawater / Mark Baskaran, Gi-Hoon Hong, and Peter H. Santschi Chapter 14 Sampling and Measurements of Trace Metals in Seawater / Sylvia G. Sander, Keith Hunter, and Russell Frew Chapter 15 Trace Analysis of Selected Persistent Organic Pollutants in Seawater / Oliver Wurl Chapter 16 Pharmaceutical Compounds in Estuarine and Coastal Waters / John L. Zhou and Zulin Zhang Appendix A: First Aid for Common Problems with Typical Analytical Instruments Appendix B: Chemical Compatibilities and Physical Properties of Various Materials Appendix C: Water Purification Technologies
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  • 9
    Call number: M 24.95704
    Description / Table of Contents: 32 Modellbaubögen ermöglichen, Kristalle sämtlicher Klassen selbst zusammenzubauen. Eine kurze Einführung, eine übersichtliche Tabelle der 32 Kristallklassen sowie ein Lernkartensystem komplettieren das Heft. ""Kristallmodelle"" ist im Set mit weiteren Titeln zum Sonderpreis erhältlich (s. S. 28f.)
    Description / Table of Contents: 32 Modellbaubögen ermöglichen, Kristalle sämtlicher Klassen selbst zusammenzubauen. Eine kurze Einführung, eine übersichtliche Tabelle der 32 Kristallklassen sowie ein Lernkartensystem komplettieren das Heft. "Kristallmodelle" ist im Set mit weiteren Titeln zum Sonderpreis erhältlich (s. S. 28f.)
    Type of Medium: Monograph available for loan
    Pages: 12 Seiten, 32 [Blatt] , Illustrationen
    ISBN: 978-3-486-58449-3
    URL: Cover
    URL: Cover
    Language: German
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 10
    Call number: AWI E2-24-95714
    Type of Medium: Monograph available for loan
    Pages: 216 Seiten , Illustrationen , 300 mm x 215 mm
    ISBN: 3865682855 , 9783865682857 , 978-3-86568-285-7
    Series Statement: Schriften des Historischen Museums Frankfurt am Main 26
    Language: German
    Note: Inhalt Vorwort und Dank Widmung Frühes Wissen um den Nordpol Der Globus des Johannes Schöner von 1515 Theodor de Bry als Verleger von Barentsz und Hudsons Polarfahrten Die Globen von Andreae (1717), Doppelmayr (1730 und 1792) und Klinger (1792) in der Frankfurter Stadtbibliothek »Zwei Grönländer« im Prehn'schen Kabinett Die Nordfahrt des Georg Berna 1861 Das Personal Die Reise Der Beginn deutscher Polarforschung Das offene Polarmeer? Die erste Versammlung Deutscher Meister und Freunde der Erdkunde am 23. und 24. Juli 1865 in Frankfurt am Main Die Erste Deutsche Nordpolar-Expedition von 1868 Die Zweite Deutsche Nordpolar-Expedition von 1869/1870 Die Österreich-Ungarische Nordpolar-Expedition von 1872-1874 Julius Payer vor 1871 Carl Weyprecht vor 1871 Die Vorexpedition von 1871 Die Österreich-Ungarische Nordpolar-Expedition von 1872 bis 1874 Carl Weyprecht nach 1874: Die Begründung der Internationalen Polarjahre Julius Payer nach 1874 Nachruhm Erstes Internationales Polarjahr und Kontinentalverschiebung Das Erste Internationale Polarjahr Der Frankfurter Verein für Geographie und Statistik Die Senckenbergische Naturforschende Gesellschaft Theodor Lerner, Polarfahrer Andrée, »Fauna Árctica« und die Bäreninsel Eine Überwinterung auf Spitzbergen Die Rettungsexpedition von 1913 Forschen für Senckenberg Auf nach Grönland! Die Erste Hessische Grönlandexpedition von Hans Krüger und Fritz Klute 1925 Waldemar Coste und der Film »Milak der Grönlandjäger« 1926 Die Zweite Hessische Grönlandexpedition 1929/1930 und das Verschwinden Hans Krügers Friedrich Sieburg und Anne Schmücker als Propagandisten Grönlands Johannes Georgi »im Eis vergraben« 1930/1931 Die Internationalen Polarjahre Und der Südpol? Georg von Neumayers unermüdliche Agitation Die drei deutschen Expeditionen in antarktische Gewässer Anhang Literaturverzeichnis Abbildungsverzeichnis Impressum
    Location: AWI Reading room
    Branch Library: AWI Library
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