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  • 1
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    Self-Directed Learning for the 21st Century (2021)
    AOSIS
    Details
    Publication Date: 2024-03-29
    Description: This book is devoted to scholarship in the field of self-directed learning in the 21st century, with specific reference to higher education. The target audience of the book includes scholars in the field of self-directed learning and higher education. The book contributes to the discourse on the quality of education in the 21st century and adds to the body of scholarship in terms of self-directed learning, and specifically its role in higher education. Although all the chapters in the book directly address self-directed learning, the different foci and viewpoints raised make the book a rich knowledge bank of work on self-directed learning.
    Keywords: Self-directed learning ; learning ; student ; educator ; cooperative learning ; theory ; context ; bic Book Industry Communication::J Society & social sciences::JN Education::JNM Higher & further education, tertiary education ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education
    Language: English
    Format: image/jpeg
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    E-BOOK
  • 2
    Electronic Resource
    Electronic Resource
    Organic monomeric glasses: A novel class of materials (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 2569-2592 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An amorphous monomeric glass is defined as a mixture of compatible organic monomeric molecules with an infinitely low crystallization rate under the most favorable conditions. These mixtures can be formed in a one-part reaction of a multifunctional nucleus with a mixture of substituents. The “noncrystallizability” of the mixture is controlled by the structural dissymmetry of the nucleus and/or the substituents and the number of components making up the mixture. We have developed an equation to calculate the number of components in a given mixture, knowing the structure and functionality of the nucleus and the number of substituents. An HPLC characterization method was developed and used to investigate the effects of various reaction conditions on the component concentration distributions and physical properties of the resulting materials. A dissymmetry number defined as the total weight percent of odd-substituted components is believed to be a potential measure of the “noncrystallizability” of the mixture. Physical properties such as glass-transition temperature can be dramatically increased through controlled oligomerization at the price of a moderate increase in melt viscosity. The organic monomeric glasses, like amorphous polymers, have good film-forming properties. However, unlike polymers, they display extremely low melt-viscosities and large positive entropy-of-mixing values and can be ground easily into extremely small particles. These properties make them ideal for certain applications where compatibility, melt-flow, and small particle size are important.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270808
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Controlled pH and oxidation-Reduction potential with a new glass tissue-culture fermentor (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 7 (1965), S. 529-553 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A 1-l. fermentor was designed and tested for use as a tissue-culture vessel. It features a temperature control device, impeller agitation without the necessity of a shaft seal, and a means of measuring, recording, and controlling both pH and oxidation-reduction potential (ORP). Tests have shown the ORP to change fairly rapidly with impeller speed variations under conditions of a continuous carbon dioxide-air overlay. Working with strain L mouse fibroblasts (Earle), cell counts of more than 1.25 ×106 ml., without centrifugation and medium renewal, were achieved, and cell counts were maintained above 1 ×106 for more than 30 hr. With the vessel studied, pH control was ±0.05, the ORP control was ±10 mV. Controlled environments for tissue-cell metabolic studies are entirely feasible with this system.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260070408
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  • 4
    Electronic Resource
    Electronic Resource
    Oxidation-reduction potential and pH patterns obtained in growth of earle's strain L cells in instrumented roux bottles (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 7 (1965), S. 555-558 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260070409
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    Paper (German National Licenses)
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