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  • 1
    Electronic Resource
    Electronic Resource
    Effects of aging and dietary restriction on DNA polymerases: gene expression, enzyme fidelity, and DNA excision repair
    Amsterdam : Elsevier
    Experimental Gerontology 27 (1992), S. 593-613 
    Details
    ISSN: 0531-5565
    Keywords: DNA polymerase, gene expression, enzymes, DNA repair ; aging ; dietary restriction
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0531-5565(92)90014-Q
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of aging anf dietary restriction of DNA polymerase expression in mice
    Amsterdam : Elsevier
    Experimental Gerontology 26 (1991), S. 97-112 
    Details
    ISSN: 0531-5565
    Keywords: DNA polymerase ; aging ; calorie ; dietary restriction
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0531-5565(91)90066-U
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation and fabrication of aromatic polyimides (1967)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 11 (1967), S. 609-627 
    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: Aromatic polyimides were prepared from pyromellitic dianhydride and a number of aromatic diamines. The effect of certain variables on the polymerization to, and the degradation of, the intermediate polypyromellitamic acids was studied, and a previously unrecorded reaction intermediate was isolated and identified. From these studies the conditions necessary to obtain high molecular weights were defined. Techniques were developed for the fabrication of satisfactory films and moldings.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1967.070110501
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of structural variations on the thermo-oxidative stability of aromatic polyimides (1972)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 153 (1972), S. 237-254 
    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: Polyimide wurden aus einer Vielfalt von Diaminen und Dianhydriden hergestellt. Ihre Stabilität bei 400°C in Luft wurde durch thermogravimetrische Analyse bestimmt. Wenn möglich, wurden hochmolekulare Filme verwendet, die durch thermische Kondensation der Poly-Amidsäure-Zwischenprodukte erhalten wurden. Wenn dies nicht möglich war, wurden Filme aus Polymeren, die mit Acetanhydrid cyclisiert waren, oder wärmebehandelte Pulver untersucht.Für die aus Pyromellithsäure-dianhydrid und einer Vielfalt von Diaminen hergestellten Polyimide wurde eine gut definierte Abstufung der Stabilität beobachtet. Die einfachsten und symmetrischsten Strukturen besaßen die höchste Wärmestabilität; die schlechtesten Resultate wurden mit elektronegativen Kopplungsgruppen erzielt.
    Notes: Polyimides were synthesised from a number of diamines and dianhydrides and their stability determined by thermogravimetric analysis at 400°C in air. Wherever possible high molecular weight films obtained by thermal condensation of the polyamic acid intermediates were studied. If this was not possible, films obtained from acetic acid anhydride ciclised polymers or thermally cured powders were used.A well defiend order of stability was observed for the polyimides prepared from pyromellitic dianhydride and a variety of diamines. The simplest and most symmetrical structures had the greatest thermal stability. Lowest stabilities were observed when linking groups were electronegative in nature.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1972.021530121
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  • 5
    Electronic Resource
    Electronic Resource
    Copolymérisation de la N-vinyl-2-oxazolidinone (1959)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 31 (1959), S. 223-229 
    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: N-Vinyl-2-oxazolidinon wurde mit einigen Monomeren copolymerisiert. Die Copolymerisationsparameter r1 und r2 wurden berechnet: TextVinylacetat-Vinyloxazolidinonr1 = 0,60, r2 = 1,50Vinylidenchlorid-Vinyloxazolidinonr1 = 1,35, r2 = 0,08Methacrylsäuremethylester-Vinyloxazolidinonr1 = 6,00, r2 = 0,03Die Resultate wurden nach dem Schema von ALFREY und PRICE interpretiert; die Polarität e beträgt -0,8, die Reaktivität Q 0,07. Diese Werte werden mit solchen anderer N-Vinyl-Monomeren verglichen.
    Notes: La N-vinyl-2-oxazolidinone a été copolymérisée avec plusieurs monomères. Les paramètres r1 et r2 ont été calculés: Textacétate de vinyle-vinyloxazolidinoner1 = 0.60, r2 = 1.50chlorure de vinylidène-vinyloxazolidinoner1 = 1.35, r2 = 0.08méthacrylate de méthyl-vinyloxazolidinoner1 = 6.00, r2 = 0.03Les résultats sont interprétés en fonction du schéma d'ALFREY-PRICE; la polarité e est de -0.8 et la réactivité Q de 0.07. Ces valeurs sont comparées à celles d'autres monomères N-vinyliques.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1959.020310115
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  • 6
    Electronic Resource
    Electronic Resource
    Arylsulfonic polymers. II. Synthesis and polymerization of fluorosulfonylaryl monomers (1960)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 48 (1960), S. 151-157 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Owing to the stability of the sulfonyl fluoride group and the reactivity of the amino group, aminobenzenesulfonyl fluorides enable the synthesis of a large number of polymers and copolymers bearing sulfonic acid groups. It is indeed possible to react aminobenzenesulfonyl fluorides with acrylic or methacrylic acid chloride or with vinyl isocyanate to obtain substituted acrylamides or vinylureas which can be polymerized or copolymerized with other vinyl monomers. Another method of preparing arylsulfonic polymers with the use of aminobenzenesulfonyl fluorides is the reaction of the latter with polymers containing reactive groups, such as polyacrylic anhydride and copolymers of maleic anhydride. The fluorosulfonyl-substituted polymers and copolymers can easily be hydrolyzed in slightly alkaline medium.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1960.1204815016
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  • 7
    Electronic Resource
    Electronic Resource
    Cyclopolymerization of vinyl trans-cinnamateCommunication presented at the IUPAC-Symposium on Macromolecules, Wiesbaden, October 1959. (1960)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 37 (1960), S. 46-52 
    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: Vinyl-trans-cinnamat, ein asymmetrisches Divinylmonomeres, wurde synthetisiert und aus ihm ein lineares lösliches Polymeres hergestellt.Mit Hilfe von Infrarotspektren sowie auf chemischem Wege konnte gezeigt werden, daß diese Polymeren sich von einem Polyvinylcinnamat, das durch Veresterung von Polyvinylalkohol mit Zimtsäurechlorid erhalten wurde, wesentlich unterscheiden.Die Polymeren, die durch Polymerisation des Monomern erhalten wurden, sind durch die Anwesenheit von γ-Lacton-Ringen, die infolge eines Cyclopolymerisationsmechanismus entstanden, gekennzeichnet.
    Notes: Vinyl trans-cinnamate, an unsymmetrical divinyl monomer, has been synthesized, and polymerized to linear, soluble polymers.It was found by infrared and chemical analysis that these polymers are quite different from polyvinyl cinnamates synthesized through esterification of polyvinyl alcohol by cinnamoyl chloride.The polymers prepared by polymerization of the monomer are characterized by the presence of γ-lactone rings resulting from a cyclopolymerization mechanism.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1960.020370105
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  • 8
    Electronic Resource
    Electronic Resource
    Copolymerization behavior of N-vinylcarbazole and other N-vinyl monomers (1961)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 47 (1961), S. 143-153 
    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: N-Vinylcarbazol wurde mit Methylmethacrylat, Methylacrylat, Styrol und Vinylidenchlorid copolymerisiert. Aus den bestimmten Copolymerisationsparametern und aus Literaturangaben wurden die Werte für Q und e nach der Beziehung von ALFREY-PRICE berechnet: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Q = 0} {\rm ,30 \ \ \ \ \ \ \ e = \hbox{-1,2}} $$\end{document}Werte für den Resonanzfaktor q und den elektrischen Faktor ∊ wurden nach den SCHWAN-PRICE-Gleichungen berechnet: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm q = -2,3\, {Kcal}/{Mol}} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$ \varepsilon = - 0,39 \cdot 10^{ - 10} {\rm e}.{\rm s}.{\rm E}. $\end{document}Die Q- und e-Werte für verschiedene N-Vinylmonomere wurden verglichen.
    Notes: N-vinylcarbazole has been copolymerized with methyl methacrylate, methyl acrylate, styrene and vinylidene chloride. From the reactivity ratios found and from literature data, the Q and e values were calculated according to the ALFREY-PRICE scheme. \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Q = 0} {\rm .30 \ \ \ \ \ \ \ e = \hbox{-1.2}} $$\end{document}Values of the resonance factor q and the electrical factor ∊ were calculated using the equations of SCHWAN and PRICE: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm q = -2.3\, {kcal}/{mole}} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$ \varepsilon = - 0.39 \cdot 10^{ - 10} {\rm e}.{\rm s}.{\rm u}. $\end{document}Q and e values for several N-vinyl monomers were plotted on a Q-e map.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1961.020470113
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  • 9
    Electronic Resource
    Electronic Resource
    Structure of poly(styrenesulfonic acid) prepared by sulfonation of polystyrene (1961)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 43 (1961), S. 242-244 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1961.020430125
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  • 10
    Electronic Resource
    Electronic Resource
    A study of some properties of aromatic imides (1971)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 143 (1971), S. 189-206 
    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: Schmelzpunkt, Löslichkeit und Infrarot-Spektren mehrerer aromatischer Imide, hauptsächlich zweifach substituierter N.N′-Diphenylpyromellitimide, wurden gemessen. Die Verschiedenartigkeit der beobachteten Eigenschaften in Abhängigkeit von der Struktur konnte durch gewisse Annahmen über Planarität, Polarisierung und intermolekulare Wechselwirkungen befriedigend erklärt werden.
    Notes: The melting point, solubility and infrared spectra of a number of aromatic imides, mainly disubstituted N.N′-diphenylpyromellitimides, have been determined. The variation in properties observed could be explained satisfactorily by making certain assumptions about the planarity, polarisation and intermolecular interactions of the compounds.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1971.021430119
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