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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 150 (1987), S. 179-187 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Phenol-Formaldehyd-Harze vom Novolak- und Resol-Typ wurden durch Chromatographie an einer mit Octadecylsilan auf Kieselgel bepackten Umkehrphasen-Mikro-Säule getrennt. Eine gute Auftrennung der meisten Komponenten wurde durch die Verwenndung der Gradientelution mit Methanol und Wasser erzielt. Der Gradient wurde in einer Rohr-Mischkammer (Volumen 1,5 ml) erzeugt; der Anteil von Methanol in der mobilen Phase wurde im Verlauf der Analyse von 10 auf 90% kontinuierlich gesteigert. Die Probenaufgabe erfolgte mit Hilfe eines Dosierventils und einer Probenschleife (Volumen 10 μl). Das Verfahren ergab reproduzierbare Ergebnisse; es erwies sich als gut geeignet zur Charakterisierung von Phenol-Formaldehyd-Harzen.
    Notes: Phenol-formaldehyde resins of the Novolak and Resol type were chromatographed on a reverse-phase micro-column packed with octadecylsilane on silica gel. A good separation of most components was achieved by the use of gradient elution with methanol-water; the contents of methanol in the mobile phase increased continually from 10 to 90%. The gradient was generated in a simple tubular mixer with an internal volume of 1.5 ml. Samples were applied to the column in a non-eluting solvent, using a six-port injection value with a 10 μl sample loop. The method, which shows a good reproducibility, is suitable for the characterization of phenol-formaldehyde resins.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2024-04-14
    Description: Title in English: Didactic inspirations for activation teaching in secondary school history The publication serves as a support for secondary school teachers for the development of activation teaching in history.
    Keywords: Promoting activating learning ; secondary school history ; thema EDItEUR::Y Children’s, Teenage and Educational::YP Educational material::YPJ Educational: Humanities and social sciences, general::YPJH Educational: History
    Language: Czech
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  • 3
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    Masaryk University Press | Masaryk University
    Publication Date: 2023-02-10
    Description: Title in English: One Hundred Faces, One Hundred Stories: Selected personalities in the history of the Faculty of Arts of Masaryk University The book commemorating the centenary of the establishment of the Faculty of Arts is also a contribution to the anniversary of the whole Masaryk University. Its aim is to walk through the history of the faculty by means of a biographical method, i.e., using short biographies that introduce representative, prominent or interesting personalities whose fates and work were connected with the faculty. There was certainly no lack of biographical views in the research of the faculty history, still, such a complex set of biograms has not been collected so far. And the publication offers much more: the authors use a large set of biographical data to interpret the history of the faculty from the perspective of alternating academic generations and contemplate the formative generation experience as well as the phenomena that affected the lives of academics and students over the past 100 years. These include, as a matter of fact, both positive and negative phenomena, therefore, the publication is not just an overview of deserving personalities, respected scientists and charismatic teachers, but it also openly discusses the lives of controversial scholars. Thus, the collection of biograms provides a credible testimony to the one-hundred-year work of the faculty, continually blending studies, science and politics.
    Keywords: Faculty of Arts ; University of Brno ; history ; biography ; generational approach ; bic Book Industry Communication::J Society & social sciences::JN Education::JNB History of education
    Language: Czech
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