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  • 1
    Electronic Resource
    Electronic Resource
    Ultrafine ZrO2 powder by Laser Evaporation: Preparation and properties (1996)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 27 (1996), S. 345-349 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Ultrafeine ZrO2 - Pulver durch Laserverdampfung: Herstellung und EigenschaftenUltrafeine oxidische Pulver werden durch Co2-Laserverdampfung aus grobem ZrO2-Pulver oder kompakten ZrO2-Stangen hergestellt.Die 10.6 μm-Strahlung im Leistungsbereich von 1 bis 4 kW wird durch einen quergeströmten CO2-Laser erzeugt, der in cw-und Pw-Betrieb arbeitet.Die Verdampfungsrate ist abhängig von der relativen Lage der Fokalebene zur Oberfläche des ZrO2-Pulvers, der Laserintensität und der eingekoppelten Energie.Bei einer Laserintensität von 4.2 · 105 Wcm-2 erreicht man eine optimale Verdampfungsrate von 130 g · h-1 (cw-Betrieb des Lasers).Das hergestellte Pulver besteht aus sphärischen Partikeln; deren Durchmesser variiert im Bereich von 5 bis 200 nm und kann durch die Verfahrensparameter beeinflußt werden. Die spezifische Oberfläche ist einstellbar von 10 bis 30 m2 · g-1.Das Pulver aus unstabilisiertem Zirkonium besitzt einen sehr hohen Anteil tetragonaler Phase. Im Fall von chemisch stabilisiertem Zirkonium kann sich die Zusammensetzung während des Verdampfungsprozesses und der Rekondensation ändern.
    Notes: Ultrafine oxide powders were produced by CO2 laser evaporation of coarse ZrO2 powder or compact stabilized ZrO2 materialThe 10.6μm radiation in the power range 1-4kW was generated by a transversal flow Co2 laser which can oscillate in cw and pw operationThe vaporization rate depends on the relative position of the focal plane to the surface of the ZrO2 powder, the laser intensity and the supplied energy input.At a laser intensity of 4.2 · 105 Wcm-2 the optimum vaporization rate is 130 g · h-1 (cw-operation of the laser).The produced powders consist of spherical particles; their diameters vary in the range from 5 to 200 nm can be controlled by the process conditions. The surface area (BET) is adjustable from 10 to 30 m2 · g-1.The powders of unstabilized zirconia show an unusual high content of the tetragonal phase. In case of chemically stabilized zirconia the composition can change during the process of evaporation and recondensation.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19960270710
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  • 2
    Electronic Resource
    Electronic Resource
    Computer-aided interpretation of mass spectra by a combination of library search with principal component analysis (1990)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 4 (1990), S. 159-162 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The mass spectral set comprising the “hitlist” of a library search for spectra similar to that of an unknown is investigated by exploratory data analysis. Principal-component mapping is used to present the “hitlist” as a two-dimensional plot which allows an interactive classification of the unknown and the recognition of erroneous library spectra.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290040507
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  • 3
    Electronic Resource
    Electronic Resource
    Notiz über Zirkon (1846)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 38 (1846), S. 508-510 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.184603801112
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  • 4
    Electronic Resource
    Electronic Resource
    Über Siliciumoxalate und ihre Alkyl-DerivateProfessor RICHARD MÜLLER zum 60. Geburtstage am 17. Juli 1963 gewidmet. (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 323 (1963), S. 228-238 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By reaction of SiCl4, RSiCl3, R2SiCl2 or R3SiCl with oxalic acid in solution of ether and benzene, respectively, substances of the definite compositions are prepared. The characteristics of them are described and the structure of the crystalline high-polymeric solids is discussed.
    Notes: Durch Umsetzung von SiCl4, RSiCl3, R2SiCl2 oder R3SiCl mit Oxalsäure in Äther- bzw. Benzol-Lösung werden Substanzen der definierten Zusammensetzung dargestellt. Ihre Eigenschaften werden beschrieben und die Struktur der kristallisierten hochpolymeren Festkörper wird diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633230504
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  • 5
    Electronic Resource
    Electronic Resource
    Über die Stabilität von Bis(triorgano-silyl)-oxalaten (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 352 (1967), S. 45-52 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By reaction of triorgano-chloro-silanes, (X—C6H4)3SiCl (X = H, CH3, F, Cl, Br), with oxalic acid we succeeded in preparing the bis(triorganosilyl)-oxalates (X—C6H4)3Si—C2O4—Si(C6H4—X)3 with X = H, CH3, Br. Their thermal stabilities were investigated and correlated to the effects of substituents.
    Notes: Durch Umsetzung von Triorgano-chlor-silanen (X—C6H4)3SiCl (X = H, CH3, F, Cl, Br) mit Oxalsäure gelang es, folgende Bis(triorgano-silyl)-oxalate (X—C6H4)3Si—C2O4—Si(C6H4—X)3 (X = H, CH3, Br) darzustellen. Ihre thermische Stabilität wurde untersucht und in Beziehung zu den Substituenten-Einflüssen gebracht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673520108
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  • 6
    Electronic Resource
    Electronic Resource
    Über das Koordinationsverhalten von Silicium-oxalaten (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 352 (1967), S. 36-44 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By reaction of SiCl4, CH3SiCl3 and C6H5SiCl3 with oxalie acid in solution of some ethers ((C2H5)2O, C4H8O2, C4H8O) substances of the compositions listed in “Inhaltsübersicht” are prepared.The interrelations between these different types of structure and their dependence on the nature of the participating ether are investigated.
    Notes: Durch Umsetzung von SiCl4, CH3SiCl3 und C6H5SiCl3 mit Oxalsäure in verschiedenen äthern ((C2H5)2O, C4H8O2, C4H8O) werden Produkte folgender Zusammensetzung dargestellt: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {[{\rm Si}({\rm C}_2 {\rm O}_4 {\rm H})_2 ({\rm C}_2 {\rm O}_4) \cdot 2\,\mathop {\rm A}\limits^{..}]_{\rm n}} \hfill & {(\mathop {\rm A}\limits^{..} = \mathop {\rm A}\limits^{..}\rm ther)} \hfill \\ {[{\rm RSi}({\rm C}_2 {\rm O}_4 {\rm H})({\rm C}_2 {\rm O}_4) \cdot \mathop {\rm A}\limits^{..}]_{\rm n}} \hfill & {} \hfill \\ {[{\rm Si}({\rm C}_2 {\rm O}_4)_2 \cdot 2\,\mathop {\rm A}\limits^{..}]_{\rm n}.} \hfill & {} \hfill \\\end{array} $$\end{document}Die Beziehungen der unterschiedlichen Strukturtypen und ihre Abhängigkeit von der Art des beteiligten äthers werden untersucht.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673520107
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  • 7
    Electronic Resource
    Electronic Resource
    Zellstoff und Papier auf dem Weltmarkt (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 469-470 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330222111
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  • 8
    Electronic Resource
    Electronic Resource
    Mass spectra of trimethylsilyl Di-O-methyloximes of aldosuloses and dialdosesPart XVII of the series ‘Radiation Chemistry of Carbohydrates.’ Part XVI: E. Bothe, D. Schulte-Frohlinde and c. von Sonntag, J. Chem. Soc. Perkin Trans. 2 in press. (1977)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 12 (1977), S. 772-776 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aldosuloses and dialdoses are readily converted to the corresponding acyclic methyloxime trimethylsilyl derivatives which give characteristic mass spectra. The gas chromatography mass spectrometry coupling technique also allows trace analysis since full information can be derived from the most intense fragment ions of the mass spectra which mainly arise from fragmentations β and δ to the O-methyloxime group.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210121214
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  • 9
    Electronic Resource
    Electronic Resource
    Computer-aided interpretation of mass spectra using databases with spectra and structures. I. Structure searchesDedicated to Professor Dr H. Budzikiewicz on the occasion of his 60th birthday. (1993)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 28 (1993), S. 198-206 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: For databases containing spectra and structures of the reference compounds, structural descriptors (‘fragments’) have been derived that are used for structure searches in the databases. The 190 fragments have been defined according to the contents of the Wiley/NBS Mass Spectral Database and to fragmentation behaviour. A search for structures with defined fragments (absence or presence of certain fragments) retrieves certain classes of compounds. An application for checking a reference spectrum is discussed. A search for structures similar to a target structure has been developed to be used in cases where a structure can be proposed for the unknown compound. The most closely related structures existing in the database will be selected, the respective spectra often being the key for interpretation or structure elucidation, as illustrated by an example.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210280311
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  • 10
    Electronic Resource
    Electronic Resource
    Massenspektrometrische Analyse organisch-chemischer Verbindungen mit Hilfe eines Computersystems (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 84 (1972), S. 381-390 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19720840904
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