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  • 1
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (17 Seiten, 767,43 KB) , Illustrationen, Diagramme
    Language: German
    Note: Förderkennzeichen BMBF 01GQ1605 [richtig] - O1GQ1605 [falsch] , Verbundnummer 01176374 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 2
    Keywords: Forschungsbericht ; Altern ; Caenorhabditis elegans ; Proteinstoffwechsel ; Homöostase ; Nervendegeneration ; Aminodesoxyhexosen ; Altersphysiologie ; Tiermodell
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (19 Seiten, 953,54 KB) , Diagramme
    Language: German
    Note: Förderkennzeichen BMBF 01GQ1423 A-C , Verbundnummer 01161984 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 24 (1982), S. 2527-2537 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A simple kinetic relationship is proposed to model the rate of removal of bacterial cells from solid surface by a shearing force. The theory is compared to experimentally obtained data for the removal of B. cereus cells from glass capillaries, the shear being imparted by a the flow of medium through the capillary. The critical shear stress required to sterilize the capillary wall is obtained experimentally for a number of industrial contaminant bacteria. The effect of settling time on critical shear stress is also investigated.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 25 (1983), S. 891-900 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In a previous article, the authors proposed a simple model for the rate of removal of bacterial cells from solid surfaces by fluid shear. This Model has been extended to include the deposition of cells from a flowing suspension. The theory is compared to experimentally obtained data for the deposition of Bacillus cereus cells onto the surface of glass capillaries. The effect of a hydrophobic surface, siliconized glass, and the addition of an antifoam agent to the suspension is also investigated.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Biopolymers 19 (1980), S. 713-721 
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The self-association of daunorubicin in aqueous solution has been examined using visible absorption, fluorescence, and CD measurements. Spectral changes in the concentration range 10-6 to 1.5 × 10-3M have been interpreted in terms of a monomer-dimer equilibrium for daunorubicin. The data have been analyzed using a nonlinear curve-fitting technique. The results obtained in this study differ markedly from previously published results, and possible reasons for this difference are discussed. The effect of solvent, temperature, and ionic strength on the dimerization process is investigated.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0173-0835
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Macromolecules isolated from human erythrocyte membranes which expressed I/i and ABH blood group activities were analyzed by quantitative immunoelectrophoretic techniques in order to determine the distribution of and the relationship between these two blood group systems. To help in these studies a rocket immunoelectrophoretic assay, with a maximum sensitivity of 10 ng, was developed which could detect and quantitate erythrocyte macromolecules which expressed I/i and A and B blood group determinants. In addition, a modification of the tandem crossed immunoelectrophoresis technique was also used to elucidate the structural relationship between determinants of these systems on one of the isolated macromolecular species. Serological and other immunological data are presented which throughly support the immunoelectrophoretic results. From these studies we have concluded that I and most likely i antigenic determinants are primarily expressed on poly(glycosyl)ceramides (i. e. macroglycolipids) and possibly to a lesser extent on Band 3. I active poly(glycosyl)ceramide could be isolated in equal quantity from any adult ABH type erythrocyte; i activity was found in similar quantity in the same fraction isolated from one i adult erythrocyte population. Besides expressing I/i activity the various poly(glycosyl)ceramide fractions also exhibited A, B or H activity as well, dependent upon the ABH cell type from which they were isolated. Unlike the equal distribution of I, however, ABH activity was type-specific in that the poly(glycosyl)ceramide isolated from type A (either A or Ai), B or 0 cells could react only with anti-A, anti-B, or Ulex anti-H lectin, respectively. Using the modified tandem crossed immunoelectrophoresis (CIE) technique, it was established that the same glycolipid molecules which carry I blood group activity express the A and B determinants as well. Band 3 material isolated from 0 erythrocytes exhibited I, i and H activities. From CIE analysis the I activity of Band 3 appeared to reside in a subpopulation of this material.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 462 (1980), S. 18-34 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Separation and Characterization of Chloro-aquo-hydroxo-oxo-osmates(IV)As a result of the acidic hydrolysis of hexachloroosmate(IV), OsCl62-, and/or the careful reduction of osmium tetroxide with iron(II) sulfate in hydrochloric acid products have been obtained which have been separated by column chromatography using diethylaminoethyl cellulose. On the basis of the analytically determined Os:Cl ratios, the ionic charges that could be deduced from the elution behaviour, and the absorption spectra the products have been characterized as the monomers OsCl5(H2O)-, cis-OsCl4(OH)(H2O)-, fac-OsCl3(OH)2(H2O)- and mer-OsCl3(OH)(H2O)2, the O-bridged dimers Cl5Os—O—OsCl54-, cis-(H2O)Cl4Os—O—OsCl4(H2O)2-and fac-(H2O)(OH)Cl3Os—O—OsCl3(OH)(H2O)2- and the hydrogen bridges forming OH-bridged dimers shown in “Inhaltsübersicht”.
    Notes: Die bei der sauren Hydrolyse von Hexachloroosmat(IV), OsCl62-, und/oder der vorsichtigen Reduktion von Osmiumtetroxid mit Eisen(II)-sulfat in salzsaurer Lösung entstehenden Reaktionsprodukte wurden säulenchromatographisch an Diethylaminoethylcellulose getrennt. Auf Grund der analytisch bestimmten Os:Cl-Verhältnisse, der aus dem Elutionsverhalten erhältlichen Ionenladungen und der Absorptionsspektren handelt es sich um die Monomeren OsCl5(H2O)-, cis-OsCl4(OH)(H2O)-, fac-OsCl3(OH)2(H2O)- und mer-OsCl3(OH)(H2O)2, die O-verbrückten Dimeren Cl5Os—O—OsCl54-, cis-(H2O)Cl4Os—O—OsCl4(H2O)2- und fac-(H2O)(OH) Cl3Os—O—OsCl3(OH)(H2O)2- sowie die Wasserstoffbrücken ausbildenden OH-verbrückten Dimeren .
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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