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  • Chemistry  (78,100)
  • 1995-1999  (38,683)
  • 1985-1989  (39,418)
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Years
Year
  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Keywords: Physics ; Chemistry, Physical and theoretical ; Atoms ; Physics ; Chemistry ; Plasma (Ionized gases) ; Theoretical and Computational Chemistry ; Physics ; Atoms, Molecules, Clusters and Plasmas
    Description / Table of Contents: Semiclassical Theory of Atoms presents a novel approach to theoretical atomic physics. The fundamental quantity in this new, powerful formalism is the effective potential, not the density. The starting point is the highly semiclassical approximation known as the Thomas-Fermi model. It is studied in great detail, and then refined in three steps by adding quantum corrections successively according to their importance. First, the strongly bound electrons are treated in detail. Second, the bulk of electrons is better described by introducing quantum corrections to the Thomas-Fermi treatment and by including the exchange interaction. At this stage, predicted binding energies, for instance, are correct to within a small fraction of a percent. Third, shell effects are introduced. The improved semiclassical treatment is then sufficiently refined to reproduce the systematics of the Periodic Table. It addresses the graduate student with a good knowledge of elementary quantum mechanics
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (VII, 402 p. 1 illus)
    Edition: Springer eBook Collection. Physics and Astronomy
    ISBN: 9783540391418 , 9783540192046
    Series Statement: Lecture Notes in Physics 300
    Language: English
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  • 2
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Keywords: Chemistry ; Physical chemistry ; Polymers ; Thermodynamics ; Atoms ; Physics ; Statistical physics ; Dynamical systems ; Chemistry ; Chemistry, Physical organic ; Polymers ; Statistical physics ; Thermodynamics ; Plasma (Ionized gases) ; Chemistry ; Thermodynamics ; Atoms, Molecules, Clusters and Plasmas ; Physical Chemistry ; Statistical Physics ; Polymer Sciences
    Description / Table of Contents: This monograph gives a detailed introductory exposition of research results for various models, mostly two-dimensional, of directed walks, interfaces, wetting, surface adsorption (of polymers), stacks, compact clusters (lattice animals), etc. The unifying feature of these models is that in most cases they can be solved analytically. The methods used include transfer matrices, generating functions, recurrence relations, and difference equations, and in some cases involve utilization of less familiar mathematical techniques such as continued fractions and q-series. The authors emphasize an overall view of what can be learned generally of the statistical mechanics of anisotropic systems, including phenomena near surfaces, by studying the solvable models. Thus, the concept of scaling and, where known, finite-size scaling properties are elucidated. Scaling and statistical mechanics of anisoptropic systems in general are active research topics. The volume provides a comprehensive survey of exact model results in this field
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (VI, 122 p. 1 illus)
    Edition: Springer eBook Collection. Physics and Astronomy
    ISBN: 9783540481201 , 9783540514299
    Series Statement: Lecture Notes in Physics 338
    Language: English
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  • 3
    Keywords: Chemistry ; Physical chemistry ; Phase transitions (Statistical physics) ; Chemistry ; Chemistry, Physical organic ; Crystals ; Chemistry ; Physical Chemistry ; Partially Ordered Systems, Glasses, Quasicrystals
    Description / Table of Contents: This book presents the proceedings of a workshop on glass-forming liquids held at the University of Bielefeld in 1985. The aim of the meeting was to seek unifying interpretations which may apply to all glass-forming materials like inorganic and polymer glasses. Also, new data was presented and modern interpretations were applied which represent the state-of-the-art knowledge about the unusual physical properties of these chemically-diverse glass-forming materials. The book should be of interest to specialists in the subject, to polymer scientists, glass technologists and materials scientists, but also - and most importantly - to researchers and teachers who wish to become informed on some of the most recent fundamental research in the fields
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    Edition: Springer eBook Collection. Physics and Astronomy
    ISBN: 9783540478386 , 9783540178019
    Series Statement: Lecture Notes in Physics 277
    Language: English
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  • 4
    Online Resource
    Online Resource
    Cambridge : Royal Society of Chemistry
    Keywords: Science ; Chemistry
    Description / Table of Contents: This product is not available separately, it is only sold as part of a set. There are 750 products in the set and these are all sold as one entity, Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years the Royal Society of Chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a 'must'. Since that time the SPR series has altered according to the fluctuating degree of activity in various fields of chemistry. Some titles have remained unchanged, while others have altered their emphasis along with their titles; some have been combined under a new name whereas others have had to be discontinued. The current list of Specialist Periodical Reports can be seen on the inside flap of this volume
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (432 p)
    ISBN: 1847556671 , 9781847556677
    Series Statement: Specialist periodical reports v. 10
    Language: English
    Note: Ebook , PDF: Adobe PDF.
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  • 5
    Book
    Book
    Weinheim : VCH
    Keywords: Chemistry ; Lehrbuch Handbuch Standardwerk ; chemistry ; Chemie ; Chemie
    Type of Medium: Book
    Pages: XXV, 993 S. , Ill., graph. Darst.
    ISBN: 3527292594
    Series Statement: Einfach für alle - Chemiebücher von VCH
    Uniform Title: General chemistry 〈dt.〉
    RVK:
    RVK:
    Language: German
    Note: Aus dem Engl. übers
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  • 6
    Keywords: Chemistry ; Lehrbuch ; Aufsatzsammlung ; Chemie
    Type of Medium: Book
    Pages: XVI, 744 S. , Ill., graph. Darst. , 1 Beil. , 24 cm
    Edition: 6., völlig neubearb. und erw. Aufl.
    ISBN: 3134843064 , 3131027665
    Uniform Title: Chemistry 〈dt.〉
    Language: German
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  • 7
    Keywords: Chemistry ; Environment ; Aufsatzsammlung ; Ökologische Chemie ; Chemische Ökologie ; Umweltchemikalie ; Biogeochemie ; Luftverschmutzung ; Wasserverschmutzung ; Anthropogener Einfluss ; Umweltchemikalie ; Biologischer Abbau ; Persistenz
    Type of Medium: Book
    DDC: 628.5 s
    Language: English
    Note: ISSN 1867-979X. - Zählung 5,O ist doppelt vergeben , Später: ed.-in-chief: O. Hutzinger ... - Später: founded by O. Hutzinger. Ed.-in-chief: Damià Barceló
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  • 8
    Online Resource
    Online Resource
    Charlottesville, Va : University of Virginia Library
    Keywords: Religion and science ; Chemistry ; Atmosphere ; Chemistry ; Atmosphere ; Religion and science ; Electronic books ; Religion and science. ; Chemistry. ; Atmosphere. ; Electronic books. ; Electronic books
    Type of Medium: Online Resource
    ISBN: 0585233462 , 9780585233468
    Series Statement: EBSCOhost eBook Collection
    Language: English
    Note: The text for this NetLibrary eBook was obtained from the University of Virginia Library Electronic Text Center , Access may be limited to NetLibrary affiliated libraries , Mode of access: World Wide Web.
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  • 9
    ISSN: 1432-0975
    Keywords: Key words Otolith ; Chemistry ; ICP-MS ; Stock discrimination ; Epinephelus striatus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract  We examined the utility of otolith minor and trace element chemistry, assayed with inductively coupled plasma mass spectrometry (ICP-MS), as a means of delineating population structure in the Nassau grouper (Epinephelus striatus). We characterized the elemental composition of otoliths collected in 1993 from three locations in Exuma Sound, Bahamas and from Glover Reef, Belize in 1995. A single location in Exuma Sound was sampled in 1994 to test temporal variability in otolith composition. Five elements (Ca, Zn, Sr, Ba and Pb) were routinely detected, at levels significantly above background, by solution-based ICP-MS. Results from analysis of variance of elemental data, expressed as a ratio to Ca, indicated that there were no significant differences among the Exuma locations for any element, but significant variability was found between Glover Reef and the pooled Exuma localities for Zn/Ca, Sr/Ca and Ba/Ca ratios. Significant inter-annual differences at one Exuma Sound location was restricted to Ba/Ca ratios. Discriminant function analysis correctly classified 86% and 95% of the Belize and pooled Exuma sites, respectively. Otoliths from Belize were characterized by low Zn/Ca and high Ba/Ca and Pb/Ca ratios compared to otoliths from fish collected in Exuma Sound. Although differences in Ba levels may be related to upwelling at Glover Reef, more data are needed to definitely link otolith composition with regional differences in water chemistry.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Aquatic sciences 51 (1989), S. 108-128 
    ISSN: 1420-9055
    Keywords: Chemistry ; mountain lakes ; silica ; acidity ; sediment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Alpine lakes in siliceous catchments of Tyrol and Carinthia (Austria) show signs of acidification. About 9% of the studied lakes have no alkalinity, more than 20% are below pH 6. About two thirds of all lakes have acid neutralizing capacities below 100 μeq 1−1. In spite of moderate precipitation acidity, some lakes show considerable concentrations of dissolved reactive aluminum during or shortly after snowmelt. High altitude lakes of the Alps are definitely more acidic than high mountain lakes in remote areas. Large differences in water and soil chemistry of nearby situated lakes were attributed to heterogeneities of bedrock geology. Paleolimnological investigations on former pH values of five lakes, based on diatom assemblages in the sediment, showed different developments: recent and past acidification, stable conditions, and alkalinization.
    Type of Medium: Electronic Resource
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