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  • 1995-1999  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Promoter polymorphisms in the chromosome 5 gene cluster in asthma and atopy (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 25 (1995), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1995.tb00428.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Geology and ore genesis of the manganese ore deposits of the Postmasburg manganese-field, South Africa (1995)
    Springer
    Mineralium deposita 30 (1995), S. 257-267 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Postmasburg Mn/Fe-ores occur exclusively in dolomitic Precambrian sinkhole structures with siliceous breccias and shales as hostrocks. The main manganese minerals are braunite and bixbyite, apart from secondary alteration products of the psilomelane-manganomelane family. Various generations of ore minerals could be identified. The ore mineralization is subdivided into three different genetic types. They are classified either as pure karst deposits or as combined formations of karst origin and shallow marine sedimentation due to the transgression of the Banded Iron Formation (BIF) sea. Post-sedimentary metamorphism is identified as very low grade. The development of the different ore types is illustrated schematically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00196361
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Dewetting of thin collagenous precursor films (1998)
    Springer
    Applied physics 66 (1998), S. S565 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 68.15; 68.45; 68.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051202
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effective esterification of carboxymethyl cellulose in a new non-aqueous swelling system (1996)
    Springer
    Polymer bulletin 36 (1996), S. 549-555 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Carboxymethyl cellulose (CMC) was treated in a dipolar-aprotic solvent like N,N-dimethylacetamide, or dimethylsulfoxide (DMSO) with p-toluenesulfonic acid yielding a high reactive gel-suspension of the polymer. This mixture allows a direct esterification of free hydroxyl groups of CMC as exemplified by acylation with carbonic acid chlorides, or anhydrides, and with isocyanates as well as by sulphation, phosphating and silylation. The products characterized by elemental analysis and FTIR spectroscopy possess a high degree of functionalization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00342445
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    New approaches to advanced polymers by selective cellulose functionalization (1997)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 48 (1997), S. 277-297 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The uniform structure of cellulose, combined with its hydrophilicity, biocompatibility, chirality, and structure-forming capacity, as well as its broad synthetic potential, make the design of cellulose-based advanced materials a challenge for polysac-charide research. The synthesis of new cellulose products with regiocontrolled pattern of functionalization and of well defined supramolecular nanoscale architectures is a highlight in recent cellulose chemistry.The present feature will discuss regioselective functionalization of cellulose and cellulose derivatives with respect to reactivity of the polymer depending on molecular and supramolecular structure. Experimental examples of functionalization via ester intermediates of controlled stability as well as via protecting or activating ether groups are described and the efficiency of the reaction routes and procedures is evaluated.Moreover, problems and progress in techniques of product analysis and structure-property relationships as well as potential applications of regioselectively functionalized cellulosics are presented together with a discussion of possible future developments in cellulose chemistry.
    Additional Material: 21 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1997.010480801
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    Paper (German National Licenses)
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