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  • Wiley-Blackwell  (33)
  • American Institute of Physics  (3)
  • Mineralogical Society of Great Britain and Ireland  (2)
  • Springer Nature  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 130 (1923), S. 199-204 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 15 (1984), S. 386-393 
    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: Applicability of Different Etching Methods for Metals - Comparing Investigation of Metallographic Etching ProceduresThe feasibility of different etching techniques in laboratory practice is mainly appointed by the reproducibility of the metallographic micro-structure, which is dependent on the etching method, the etching time and a practical handling of the etching procedure. Comparing investigations concerning the applicability of chemical, electrolytic and ionic etching methods for metals and alloys in electrotechnical industry - with the aim to estimate efficiency and reproducibility of the micro-structure resulting from the different techniques - have been done. Micro-structure estimation will be done by different methods of light-microscopy.In any case physical ion-etching turns out to be the less problematic etching method - in comparison with chemical and electrolytic techniques. Ion etching shows a good reproducibility and allows the simultaneous etching of different materials. The summarizing valuation of the different etching methods includes a list of optimum etching parameters for copper, brass copper-tin and copper-beryllium alloys.
    Notes: Die Einsatzmöglichkeiten unterschiedlicher Ätzverfahren in der Laborpraxis werden im wesentlichen bestimmt durch die Reproduziorbarkeit der ausgebildeten Gefügestrukturen - als Funktion einer bestimmten Ätzmethode, der Ätzzeit und der problemlosen Handhabung der Ätzprozedur. Zur Anwendbarkeit des chemischen und elektrolytischen Ätzens, sowie des Ionenätzens bei Metallen und Legierungen der Elektrotechnik wurden vergleichende Untersuchungen mit dem Ziel durchgeführt, eine Beurteilung von Güte und Reproduzierbarkeit der nach den verschiedenen Ätzprozessen entstandenen Gefügebilder zu ermöglichen.Die Abbildung der Gefügestrukturen geschieht mit Hilfe unterschiedlicher lichtmikroskopischer Beobachtungsverfahren.Das physikalische Ionenätzen erweist sich gegenüber chemischen und elektrolytischen Ätzverfahren in allen Fällen als die problemlosere Ätzmethode, die neben einer guten Reproduzierbarkeit zudem ein gleichzeitiges Ätzen unterschiedlicher Materialien in einem Werkstoff ermöglicht.Eine zusammenfassende Wertung der verschiedenen Ätzverfahren umfaßt die Angabe optimaler Ätzparameter für die Werkstoffe Kupfer, Messing, CuSn 8 und Kupfer-Beryllium.
    Additional Material: 10 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 1 (1978), S. 71-72 
    ISSN: 0935-6304
    Keywords: Gas Chromatography ; Capillary, glass ; Separation of the four 10,12-Hexadecadiene-1-ol isomers ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Complete gas-liquid chromatographic separation of the four 10, 12-hexadecadiene-l-ol isomers using a FFAPcoated glass capillary column is described.These measurements are of importance for the analysis of pheromones from biological sources and for the control of material from stereospecific syntheses.
    Additional Material: 1 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 10 (1987), S. 41-42 
    ISSN: 0935-6304
    Keywords: Gas chromatography ; Capillary columns ; PCDD's ; PCDF's ; Adsorption phenomena ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 13 (1961), S. 188-196 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Allyläther des 4,4′-Dioxydiphenyl-propan-2,2 lassen sich auf mit Formamid vorbehandeltem Papier mit Gemischen von Benzin und Chloroform als Fließmittel chromatographieren und mit diazotiertem Benzidin bzw. Kaliumpermanganat nachweisen.Dieses Verfahren ermöglicht eine laufende Kontrolle des Reaktionsverlaufs bei der präparativen Darstellung des 4,4′-Dioxydiphenyl-propan-mono- und -diallyläthers sowie eine schnelle und exakte Untersuchung des Reinheitsgrades der Reaktionsprodukte.Ferner stellt das von uns ausgearbeitete Verfahren eine neue Methode zur Untersuchung der CLAISEN-Umlagerung dar. Es konnte damit festgestellt werden, daß diese Umlagerung beim Diallyläther des 4,4′-Dioxydiphenyl-propan-2,2 bereits bei 130 °C beginnt.
    Additional Material: 7 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 71 (1959), S. 372-372 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 273-273 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 79 (1967), S. 566-573 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch die aluminiumchlorid-katalysierte Bicyclotrimerisierung von 2-Butin zu Hexamethyl-Dewar-Benzol wurde erstmals die präparative Voraussetzung für eine umfassende Untersuchung der chemischen Reaktivität eines Dewar-Benzol-Derivats geschaffen. Neben Hydrierung und Oxidationsreaktionen erlauben besonders die Additionen H-acider Verbindungen sowie Substitutions- und Eliminierungsreaktionen mit diesen Addukten interessante Rückschlüsse auf die Reaktionsmöglichkeiten des Dewar-Benzol-Systems.
    Additional Material: 2 Tab.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 77 (1965), S. 41-41 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 21 (1981), S. 474-482 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The effect of moisture on the curing reaction of Hercules 3501-6/AS graphite-epoxy prepreg was investigated. Test samples of prepreg were aged under humid conditions, while control samples were aged under identical temperature conditions but with negligible humidity. Determinations of the amounts of moisture absorbed and desorbed fom the samples were accomplished gravimetrically. Dielectric analysis was used to monitor the relative reaction rates and overall activation energies of the prepreg after various aging periods. Changes taking place in monomer concentrations were observed using high performance liquid chromatography (HPLC). As aging continued, samples aged under humid conditions displayed, significant decrease in the overall activation energy accompanied by increased reaction rates. This change did not occur in the control samples. Samples aged in high humidity showed increased conversion of monomers to polymer when compared to dry aged samples. The aging time required before the above changes became apparent was temperature dependent; the higher the aging temperature, the sooner the changes in reactivity occurred.
    Additional Material: 15 Ill.
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