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  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Keywords: Mathematics ; Numerical analysis ; Numerical Analysis ; Mathematics ; Konferenzschrift 1981 ; Numerisches Verfahren ; Numerische Mathematik
    Description / Table of Contents: An introduction to the numerical treatment of volterra and abel-type integral equations -- Topics in multivariate approximation theory -- Practical spline approximation -- Finite element methods for non-self-adjoint problems -- An introduction to piecewise-linear homotopy algorithms for solving systems of equations.
    Type of Medium: Online Resource
    Pages: Online-Ressource (XII, 204 p, online resource)
    ISBN: 9783540395584 , 9783540119678
    Series Statement: Lecture Notes in Mathematics 965
    RVK:
    Language: English
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  • 2
    Online Resource
    Online Resource
    Amsterdam :Elsevier Science & Technology,
    Keywords: Red beds. ; Sedimentary rocks. ; Electronic books.
    Description / Table of Contents: Continental Red Beds.
    Type of Medium: Online Resource
    Pages: 1 online resource (577 pages)
    Edition: 1st ed.
    ISBN: 9780080869421
    Series Statement: Issn Series ; v.Volume 29
    DDC: 552
    Language: English
    Note: Front Cover -- Continental Red Beds -- Copyright Page -- CONTENTS -- PREFACE AND ACKNOWLEDGEMENTS -- CHAPTER 1. THE GEOLOGICAL FRAMEWORK OF CONTINENTAL RED BEDS -- INTRODUCTION -- GEOSYNCLINES -- PLATE TECTONICS AND SEDIMENTATION -- THE TECTONIC SETTING OF ANCIENT CONTINENTAL RED BEDS -- THE CLIMATIC SETTING OF ANCIENT CONTINENTAL RED BEDS -- THE CLASSIFICATION OF ANCIENT CONTINENTAL RED BEDS -- CHAPTER 2. DESERT RED BEDS -- INTRODUCTION -- MODERN DESERT SEDIMENTS -- DESERT FLUVIAL SEDIMENTS -- AEOLIAN SAND DEPOSITS -- DESERT LAKES AND INLAND SABKHAS -- THE REDDENING OF DESERT SEDIMENTS -- ANCIENT AEOLIAN RED BEDS -- CONCLUSIONS AND FURTHER READING -- CHAPTER 3. DELTA PLAIN RED BEDS -- INTRODUCTION -- DELTA MODELS -- DELTAIC FACIES ASSOCIATIONS -- DELTA GROWTH AND ABANDONMENT -- ANCIENT DELTAIC SUCCESSIONS -- RED BEDS IN ANCIENT DELTA PLAINS -- CONCLUSIONS AND FURTHER READING -- CHAPTER 4. ALLUVIAL RED BEDS -- INTRODUCTION -- RIVER CHANNELS -- ALLUVIAL FANS -- PEBBLY BRAIDED RIVERS -- SANDY LOW-SINUOSITY RIVERS -- EPHEMERAL STREAM CHANNELS -- MEANDERING RIVERS -- RIVER BANKS AND FLOODPLAINS -- THE TRANSPORT OF IRON IN RECENT ALLUVIUM -- ANCIENT ALLUVIAL RED BEDS -- CONCLUSIONS AND FURTHER READING -- CHAPTER 5. THE DIAGENESIS OF CONTINENTAL RED BEDS -- INTRODUCTION -- SANDSTONE DIAGENESIS -- THE MECHANICAL INFILTRATION OF DETRITAL CLAY -- DISSOLUTION OF FRAMEWORK SILICATES -- CLAY REPLACEMENT -- AUTHIGENIC MINERALS -- STAGES IN THE DIAGENESIS OF CONTINENTAL RED BEDS -- CHAPTER 6. THE MINERALOGY AND GEOCHEMISTRY OF IRON OXIDES IN RED BEDS -- IRON OXIDE MINERALS -- OPAQUE OXIDES IN RED BEDS -- PRECIPITATION AND STABILITY OF FERRIC OXYHYDROXIDES -- ENVIRONMENTAL CONTROLS ON THE PRECIPITATION AND DIAGENETIC HISTORY OF FERRIC OXYHYDROXIDE S -- POST-DEPOSITIONAL INFLUENCE OF GROUNDWATER ON THE MINERALOGY AND GEOCHEMISTRY OF RED BEDS. , IRON CONTENT OF ANCIENT RED BEDS -- CONCLUSIONS AND FURTHER READING -- CHAPTER 7. THE MAGNETIZATION OF CONTINENTAL RED BEDS -- INTRODUCTION -- MINERAL MAGNETISM -- MAGNETIZATION PROCESSES IN SEDIMENTS -- THE MAGNETIC PROPERTIES OF CONTINENTAL RED BEDS -- CHAPTER 8. THE PALAEOMAGNETISM OF CONTINENTAL RED BEDS -- INTRODUCTION -- PROTEROZOIC BASINS OF WESTERN CANADA -- THE LATE PRECAMBRIAN OF NORTH WEST SCOTLAND -- THE OLD RED SANDSTONE -- TRIASSIC RED BEDS OF THE WESTERN USA -- LATE CENOZOIC RED BEDS OF BAJA CALIFORNIA -- THE RELATIONSHIP BETWEEN DIAGENESIS AND PALAEOMAGNETISM IN CONTINENTAL RED BEDS -- REFERENCES -- SUBJECT INDEX.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Molecular genetics and genomics 196 (1984), S. 356-359 
    ISSN: 1617-4623
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A method was developed for the isolation of spontaneous mutants of Escherichia coli K-12 with deletions extending from the srl operon to the adjacent recA gene. The srl-recA deletion mutants were extremely sensitive to DNA-damaging agents; unable to support growth of the feckless red gam mutant λbio11; and recombination-deficient in transduction and in conjugation. They therefore resembled recA point mutants such as recA13. The existence of these recA deletion mutants shows that the recA gene is not essential for viability.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Molecular genetics and genomics 195 (1984), S. 101-107 
    ISSN: 1617-4623
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Xanthomonas campestris pv. campestris was tested for its ability to maintain various plasmids after they had been transferred by conjugation from Escherichia coli donors. Broad host-range plasmids belonging to incompatibility groups P and Q could be maintained but X. campestris was unable to support replication of narrow host-range ColE1, pACYC184 and pBR325 replicons. Delivery systems based on E. coli donors of suicide plasmids and on X. campestris Hfrs were used to introduce Tn7 and Tn5 into X. campestris. Tn7 insertions were recovered at high frequency while Tn5 transposed at low frequency. Three auxotrophic Tn5 insertions were isolated but transposition of Tn7 into the X. campestris genome did not generate any auxotrophs. DNA hybridization analysis showed that Tn7 had inserted into the same “hot spot(s)” in all cases tested.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1617-4623
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Genes have been cloned from Salmonella typhimurium which when present on the multicopy plasmid pBR322 in the E. coli strain NT31 confer a Gua+ phenotype on this strain. NT31 is a purE gpt double mutant and it was expected that a Gua+ phenotype could be conferred on it by the cloning of either gpt or purE. It was, however found that in addition to these two loci the molecular cloning of another gene, which has been identified as hpt, in pBR322 confers a Gua+ phenotype on NT31. This result is explained by the overproduction of the hpt gene product, hypoxanthine phosphoribosyl transferase, which compensates for the lack of the gpt product guanine-xanthine phosphoribosyl transferase. Restriction analysis of the three loci, gpt, hpt and purE is also presented.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2011-12-23
    Description: Recent contribution of sediments and fluids to the mantle’s volatile budget Nature Geoscience 5, 50 (2012). doi:10.1038/ngeo1325 Authors: Simon Turner, John Caulfield, Michael Turner, Peter van Keken, René Maury, Mike Sandiford & Gaelle Prouteau Subduction modifies the cycling of Earth’s volatile elements. Fluid-rich sediments and hydrated oceanic lithosphere enter the convecting mantle at subduction zones. Some of the sediments and volatile components are released from the subducting slab, promote mantle melting and are returned to the surface by volcanism. The remainder continue into the deeper mantle. Quantification of the fate of these volatiles requires an understanding of both the nature and timing of fluid release and mantle melting. Here we analyse the trace element and isotopic geochemistry of fragments of upper mantle rocks that were transported to the surface by volcanic eruptions above the Batan Island subduction zone, Philippines. We find that the mantle fragments exhibit extreme disequilibrium between their U–Th–Ra isotopic ratios, which we interpret to result from the interaction of wet sediment melts and slab-derived fluids with rocks in the overlying mantle wedge. We infer that wet sediments were delivered from the slab to the mantle wedge between 8,000 and 10,000 years ago, whereas aqueous fluids were delivered separately much later. We estimate that about 625 ppm of water is retained in the wedge. A significant volume of water could therefore be delivered to the mantle transition zone at the base of the upper mantle, or even to the deeper mantle.
    Print ISSN: 1752-0894
    Electronic ISSN: 1752-0908
    Topics: Geosciences
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  • 7
    Publication Date: 2013-05-21
    Description: Nature Immunology 14, 593 (2013). doi:10.1038/ni.2576 Authors: Donald T Gracias, Erietta Stelekati, Jennifer L Hope, Alina C Boesteanu, Travis A Doering, Jillian Norton, Yvonne M Mueller, Joseph A Fraietta, E John Wherry, Martin Turner & Peter D Katsikis
    Print ISSN: 1529-2908
    Electronic ISSN: 1529-2916
    Topics: Biology , Medicine
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  • 8
    Publication Date: 2011-01-22
    Description: Nikola Paul Chmel, Laura E. N. Allan, Jan M. Becker, Guy J. Clarkson, Scott S. Turner, Peter Scott (Paper from Dalton Trans.) Nikola Paul Chmel, Dalton Trans., 2011, DOI: 10.1039/c0dt01184c To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
    Print ISSN: 1477-9226
    Topics: Chemistry and Pharmacology
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