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  • 1
    Electronic Resource
    Electronic Resource
    Microbial oxidation of (+)-epimagnolin a by Aspergillus niger
    Amsterdam : Elsevier
    Phytochemistry 35 (1994), S. 1191-1193 
    Details
    ISSN: 0031-9422
    Keywords: (+)-de-4',4''-O-dimethylepimagnolin A ; (+)-de-O-methylepimagnolin A ; (+)-epimagnolin A ; Aspergillus niger ; biotransformation ; lignan ; microbes ; regioselectivity.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)94820-9
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  • 2
    Electronic Resource
    Electronic Resource
    Biotransformation of (+)-magnolin and (+)-yangabin in rat
    Amsterdam : Elsevier
    Phytochemistry 32 (1993), S. 1421-1424 
    Details
    ISSN: 0031-9422
    Keywords: (+)-de-4'-O-methylmagnolin ; (+)-de-4'-O-methylmagnolin ; (+)-de-4'-O-methylyangabin ; (+)-magnolin, (+)-yangabin ; biotransforma ; lignan
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(93)85150-P
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  • 3
    Electronic Resource
    Electronic Resource
    Biotransformation of lignans: a specific microbial oxidation of (+)-eudesmin and (+)-magnolin by Aspergillus niger
    Amsterdam : Elsevier
    Phytochemistry 34 (1993), S. 1501-1507 
    Details
    ISSN: 0031-9422
    Keywords: (+ )-5'-hydroxypinoresinol ; (+)-cudesmin ; (+)-de-4'-O-methyl-5'-hydroxymagnolin. ; (+)-de-4'-O-methyleudesmin ; (+)-de-O-methyl-magnolin ; (+)-magnolin ; (+)-pinoresinol ; (+)-yangabin ; Aspergillus niger ; lignan ; microbes
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)90836-7
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  • 4
    Electronic Resource
    Electronic Resource
    Microbial oxidation of (+)-epimagnolin a byAspergillus niger
    Amsterdam : Elsevier
    Phytochemistry 35 (1994), S. 1191-1193 
    Details
    ISSN: 0031-9422
    Keywords: (+)-de-4',4''-O-dimethylepimagnolin A ; (+)-de-O-methylepimagnolin A ; (+)-epimagnolin A ; Aspergillus niger ; biotransformation ; lignan ; microbes ; regioselectivity.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0031-9422(00)94820-9
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  • 5
    Electronic Resource
    Electronic Resource
    An insect growth inhibitory lignan from flower buds of Magnolia fargesii
    Amsterdam : Elsevier
    Phytochemistry 35 (1994), S. 611-613 
    Details
    ISSN: 0031-9422
    Keywords: (+)-epimagnolin A, insect growth inhibitor. ; Magnolia fargesii ; Magnoliaceae ; flower buds ; lignan ; shin-i
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)90572-7
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  • 6
    Electronic Resource
    Electronic Resource
    Relation between impact strength and dynamic mechanical properties of plasticsProd. No. 1574 (1967)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 11 (1967), S. 1661-1665 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    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: A simple theory is developed which correlates the Izod impact strength of polymers with (G′100-G′300)2/G′100, where G′100 and G′300 are dynamic shear moduli at 100°K. and 300°K., respectively. The theory assumes the Maxwell element for the material and the fracture time smaller than the relaxation time. The theory is verified by experimental data for numerous polymers. Another approach which correlates the impact strength with the integrated loss factor from 0 to 300°K. is also proved valid.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1967.070110906
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  • 7
    Electronic Resource
    Electronic Resource
    Studies of the polymerization of diallyl compounds. XXIX. Polymerization of diallyl tartrate diacetate (1979)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 17 (1979), S. 4107-4110 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: No Abstract
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1979.170171230
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  • 8
    Electronic Resource
    Electronic Resource
    Equilibrium polymerization of 1.3-dioxolane (1968)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 114 (1968), S. 146-154 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Gleichgewichtspolymerisation von 1.3-Dioxolan und einiger abgeleiteter cyclischer Formale wurde unter Anwendung des Bortrifluorid/Äthyläther-Komplexes als Katalysator in benzolischer Läsung untersucht. Aus der Beziehung zwischen Gleichgewichtskon-zentration des Monomeren und Polymerisationstemperatur wurden die thermodynamischen Polymerisationsparameter wie folgt ermittelt: \documentclass{article}\pagestyle{empty}\begin{document}$$\begin{array}{*{20}c} {1.3 - {\rm dioxolane }\Delta {\rm H}_{\rm p} = - 3,6 \pm 0.6\ {\rm kcal}/{\rm mole},{\rm }\Delta {\rm S}_{\rm p}^{\rm o} = - 14 \pm 2\ {\rm cal}/{\rm mol}.{\rm grad}.} \hfill \\ {1.3 - {\rm dioxolane }\Delta {\rm H}_{\rm p} = - 3,2 \pm 0.5\ {\rm kcal}/{\rm mole},{\rm }\Delta {\rm S}_{\rm p}^{\rm o} = - 9.3 \pm 1.4\ {\rm cal}/{\rm mol}.{\rm gard}.} \hfill \\ {1.3.6 - {\rm dioxolane }\Delta {\rm H}_{\rm p} = - 5,3 \pm 0.8\ {\rm kcal}/{\rm mole},{\rm }\Delta {\rm S}_{\rm p}^{\rm o} = - 9.3 \pm 1.4\ {\rm cal}/{\rm mol}.{\rm deg}.} \hfill \\ \end{array}$$\end{document}
    Notes: Equilibriurn polymerizations of 1.3-dioxolane and some related cyclic formals have been studied in benzene solution by using boron fluoride ethyl ether complex as a catalyst. From the relation between equilibrium monomer concentration and polymerization temperature, the thermodynamic parameters of the polymerization of these cyclic formals were evaluated as follows: \documentclass{article}\pagestyle{empty}\begin{document}$$\begin{array}{*{20}c} {1.3 - {\rm dioxolane }\Delta {\rm H}_{\rm p} = - 3.6 \pm 0.6\ {\rm kcal}/{\rm mole},{\rm }\Delta {\rm S}_{\rm p}^{\rm o} = - 14 \pm 2\ {\rm cal}/{\rm mol}.\deg .} \hfill \\ {1.3 - {\rm dioxolane }\Delta {\rm H}_{\rm p} = - 3.2 \pm 0.5\ {\rm kcal}/{\rm mole},{\rm }\Delta {\rm S}_{\rm p}^{\rm o} = - 9.3 \pm 1.4\ {\rm cal}/{\rm mol}.\deg .} \hfill \\ {1.3.6 - {\rm dioxolane }\Delta {\rm H}_{\rm p} = - 5.3 \pm 0.8\ {\rm kcal}/{\rm mole},{\rm }\Delta {\rm S}_{\rm p}^{\rm o} = - 9.3 \pm 1.4\ {\rm cal}/{\rm mol}.\deg .} \hfill \\ \end{array}$$\end{document}
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1968.021140111
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  • 9
    Electronic Resource
    Electronic Resource
    Polymerization of methylmethacrylate initiated by hydrogenation catalysts (1967)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 104 (1967), S. 254-262 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: RANEY-Metalle (Ni, Fe, Co), URUSHIBARA-Metalle (Ni, Co) und ULLMANN-Kupfer können die Polymerisation von Methylmethacrylat einleiten, wobei die Anwesenheit von Diaminen, Diolen oder organischen Halogenverbindungen die Reaktivität der genannten Metalle erhöht.In Gegenwart von CCl4 ist die Reaktionsgeschwindigkeit (Rp) einerseits proportional der Quadratwurzel der Menge der Metalle und des CCl4, andererseits der ersten Potenz der Konzentration des Monomeren; jedoch wird Rp konstant und unabhängig von der Konzentration des CCl4, wenn dieser in großem Überschuß vorliegt.Es wird geschlossen, daß die vorliegende Polymerisation über freie Radikale verläuft. Es wird angenommen, daß ein nullwertiges Metallatom bei der Initiierung beteiligt ist, wobei eine Komplexbildung zwischen Metall und CCl4 erfolgt.
    Notes: RANEY metals (Ni, Fe, Co), URUSHIBARA metals (Ni, Co) and ULIMANN cu initiate the polymerization of methylmethacrylate. Diamines, diols or organic halides enhance their reactivity.In the presence of CCl4, the polymerization rate (Rp) is proportional to the square root of the amount of both metals and CCl4, and to the first power of the monomer concentration, but Rp becomes constant and independent of the concentration of CCl4 when there is a great excess of CCl4.We concluded that this polymerization follows the free radical mechanism and the participation of a zero-valent metal atom in the initiation reaction including complex formation between metal and CCL4 is suggested.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1967.021040126
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  • 10
    Electronic Resource
    Electronic Resource
    Participation of the depropagation reaction in the cationic copolymerization of 3.3-bischloromethyl oxacyclobutane and tetrahydrofuran (1968)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 117 (1968), S. 242-255 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Für die kationische Copolymerisation von 3.3-Bischloromethyl-oxacyclobutan und Tetrahydrofuran wurde eine Gleichung, für die Zusammensetzung des Copolymeren, bei der auch die Depolymerisation berücksichtigt wurde, abgeleitet und angewendet. Der mit steigender Polymerisationstemperatur oder mit Abfall der Monomerenkonzentration beobachtete Abfall der Anzahl der Tetrahydrofuraneinheiten, die in das Copolymere eingebaut werden, wird durch die Gleichung gut erklärt. Es wurden auch Unterschiede in der Wirksamkeit der Katalysatorsysteme BF3 · (C2H5)2O, (C2H5)3OBF4, C6H5N2PF6 und Al(C2H5)3—H2O beobachtet.
    Notes: A copolymer composition equation including the depropagation reaction was derived and applied to the cationic copolymerization of 3.3-bischloromethyl oxacyclobutane and tetrahydrofuran. The observed decrease of the number of tetrahydrofuran units incoroporated in the copolymer with increase of the polymerization temperature or with decease of the monomer concentration was well explained by the equation. Differences between the catalyst systems, BF3·Et2O, Et3OBF4,PhN2PF6, and AlEt3—H2O were also observed.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1968.021170123
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