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  • General Chemistry  (2)
  • Analytical Chemistry and Spectroscopy  (1)
  • Engineering  (1)
  • Wiley-Blackwell  (4)
  • Geological Society of America (GSA)
  • International Union of Crystallography (IUCr)
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  • 1969  (2)
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  • Wiley-Blackwell  (4)
  • Geological Society of America (GSA)
  • International Union of Crystallography (IUCr)
  • Periodicals Archive Online (PAO)
  • Sage Publications
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  • 2000-2004
  • 1995-1999
  • 1990-1994  (2)
  • 1965-1969  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Paving: A new approach to automated quadrilateral mesh generation (1991)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 32 (1991), S. 811-847 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: This paper presents a new mesh generation technique, paving, which meshes arbitrary 2-D geometries with an all-quadrilateral mesh. Paving allows varying element size distributions on the boundary as well as the interior of a region. The generated mesh is well formed (i.e. nearly square elements, elements perpendicular to boundaries, etc.) and geometrically pleasing (i.e. mesh contours tend to follow geometric contours of the boundary). In this paper we describe the theory behind this algorithmic/heuristic technique, evaluate the performance of the approach and present examples of automatically generated meshes.
    Additional Material: 42 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620320410
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  • 2
    Electronic Resource
    Electronic Resource
    Mass spectra of trimethylsilyl derivatives of naturally occurring flavonoid aglycones and chalcones (1991)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 26 (1991), S. 157-160 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Electron impact mass spectra of the trimethylsilyl derivatives of a series of flavonoid aglycones and chalcones are reported. The spectra show prominent ions arising from fragmentation of the trimethylsilyl (TMS) groups. Inter-actions between adjacent TMS groups, and between TMS groups in the 3- or 5-position (6′-position for the chalcones) and the C-ring carbonyl, yield structurally significant ions. Few fragments associated with the retro-Diels-Alder cleavage of the C-ring characteristic of the underivatized compounds, are observed. The TMS derivatives thus provide complementary information for the identification of flavonoid aglycones and chalcones in biological systems.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210260310
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  • 3
    Electronic Resource
    Electronic Resource
    Die Desaktivierung angeregter ZuständeVeröffentlichung Nr. 3625 aus den Gates and Crellin Laboratories of Chemistry. (1969)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 81 (1969), S. 279-289 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Natur meidet elektronisch angeregte Zustände und ist bemüht, die aufgenommene Energie in andere Formen umzuwandeln. Dieser Aufsatz behandelt die Überführung elektronischer Anregungsenergie in gewöhnliche „thermische“ Energie unter besonderer Berücksichtigung der Löschung angeregter Zustände durch andere Moleküle. Als Beispiele werden photochemische Umwandlungen und Wechselwirkungen in Lösung gewählt.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19690810803
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  • 4
    Electronic Resource
    Electronic Resource
    Deactivation of Excited StatesContribution No. 3625 from the Gates and Crellin Laboratories of Chemistry. (1969)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 8 (1969), S. 261-270 
    Details
    ISSN: 0570-0833
    Keywords: Deactivation ; Excited states ; Photochemistry ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Nature abhors an electronically excited state and strives to convert this energy to other forms. This article is concerned with the various pathways involved in the degradation of electronic excitation to ordinary “thermal” forms, but will primarily discuss the quenching of excited states by other molecules. The authors include as examples only those phototransformations and interactions encountered in solution.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196902611
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