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  • 1
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 37 (1986), S. 613-620 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The molar ratio H2O : NaOH of sodium hydroxide solution sorbed by cellulose is represented as the equilibrium curve against the respective molar ratio of the free sodium hydroxide solution. With the results of further studies on the hydration of NaOH in sodium hydroxide solution, the hydrates of sodium hydroxide were related to the NaOH solvates bound by cellulose and the reactions accompanying the alkalization of cellulose are explained.
    Notes: Das molare Verhältnis H2O : NaOH der von der Cellulose sorbierten Natronlauge wird als Gleichgewichtskurve zum gleichen Molverhältnis der freien Lauge dargestellt. Anhand weiterer Messungen zur Hydratation des NaOH in der Natronlauge werden die Hydrate der Natronlauge zu den von der Cellulose gebundenen NaOH-„Solvaten“ in Beziehung gesetzt und die mit der Cellulosealkalisierung einhergehenden Reaktionen erklärt.
    Additional Material: 3 Ill.
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  • 3
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 596 (1991), S. 7-15 
    ISSN: 0044-2313
    Keywords: Phenylethynyl-chlorosilanes ; synthesis ; reduction ; i.r., n.m.r. data ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis, Characterization, and Reduction of Alkynyl-substituted Chloro-SilanesThe synthesis and characterization of phenylethynyl-silanes of the type (R)(Cl)nSi(C≡C—Ph)3-n (n = 0, 1, 2; R = Ph, H), (R)(R′)(Cl)nSi(C≡C—Ph)2-n (n = 0, 1; R = Me, R′ = H; R = Me, R′ = CH = CH2) und (R)(R′)(R″)Si(C≡C—Ph) (R = Me, R′ = Et, R″ = H) is discussed. The reduction of the phenylethynyl-substituted chlorosilanes with aluminum hydride yields (R)(Ph—C≡C) SiH2 or (R)(H)Si(C≡C—Ph)2 (R = Ph, Me), respectively.The identity of all synthesized compounds is documented by analytical and spectroscopic (IR, MS, 1H-, 13C- and 29Si-NMR) data.
    Notes: Die Synthese und Charakterisierung von Phenylethinyl-Silanen der Form (R)(Cl)nSi(C≡C—Ph)3-n (n = 0, 1, 2; R = Ph, H), (R)(R′)(Cl)nSi(C≡C—Ph)2-n (n = 0, 1; R = Me, R′ = H; R = Me, R′ = CH = CH2) und (R)(R′)(R″)Si(C≡C—Ph) (R = Me, R′ = Et, R″ = H) wird beschrieben. Die Reduktion der Phenylethinyl-substituierten Chlorsilane mit Lithiumaluminiumhydrid führt zu (R)(Ph—C≡C)SiH2 bzw. (R)(H)Si(C≡C—Ph)2 (R = Ph, Me).Die Identität der synthetisierten Verbindungen ist durch analytische und spektroskopische (IR, MS, 1H-, 13C- und 29Si-NMR) Daten dokumentiert.
    Additional Material: 1 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 596 (1991), S. 17-22 
    ISSN: 0044-2313
    Keywords: Alkynyl-substituted chlorosilanes ; reaction ability ; i.r., n.m.r. data ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction Ability of Alkynyl-Substituted Chloro-SilanesThe reaction of (Me)(Ph—C≡C)Si(H)(Cl), 1, with different reagents is described: Reduction of 1 with LiAlH4 yields (Me)(Ph—C≡C)SiH2, 2. With H2O (Me)(Ph—C≡C)Si(H)(OH), 3, is obtained; condensation of 3 gives [(Me)(Ph—C≡C)Si(H)]2O, 4. The aminolysis of 1 with N(i(C3H7)2H) yields (Me)(Ph—C≡C)Si(H)[N(iC3H7)2], 5. With Ph2PLi [(Me)(Ph—C≡C)(H)Si]PPh2, 6, is formed and with the Grignard reagents BrMgEt, C≡C—Ph or CH=CH2 the compounds (Me)(Ph—C≡C)Si(H)(Et), 7, (Me)(H)Si(C≡C—Ph)2, 8, or (Me)(Ph—C≡C)Si(H)(CH=CH2), 9, are obtained.All synthesized compounds (2-9) are characterized by analytical as well as spectroscopic (IR, MS, 1H-, 13C- and 29Si-NMR) data.
    Notes: Die Umsetzung von (Me) (Ph—C≡C)Si(H)(Cl), 1, mit verschiedenen Reagenzien wird beschrieben: Reduktion von 1 mit LiAlH4 führt zu (Me) (Ph—C≡C)SiH2, 2. Mit H2O wird (Me)(Ph—C≡C)Si(H)(OH), 3, erhalten; Kondensation von 3 ergibt [(Me)(Ph—C≡C)Si(H)]2O, 4. Durch Aminolyse von 1 mit N(i(C3H7)2H) wird (Me)(Ph—C≡C)Si(H)[N(iC3H7)2], 5, gebildet. Mit Ph2PLi wird [(Me)(Ph—C≡C)(H)Si]PPh2, 6, erhalten und die Grignard-Reagenzien BrMgEt, C≡C—Ph bzw. CH=CH2 ergeben die Verbindungen (Me)(Ph—C≡C)Si(H)(Et), 7, (Me)(H)Si(C≡C—Ph)2, 8, bzw. (Me)(Ph—C≡C)Si(H)(CH=CH2), 9.Alle dargestellten Verbindungen (2—9) wurden elementaranalytisch und spektroskopisch (IR, MS, 1H-, 13C- und 29Si-NMR) nachgewiesen.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Bioluminescence and Chemiluminescence 1 (1986), S. 47-51 
    ISSN: 0884-3996
    Keywords: ATP ; luciferin-luciferase ; bioluminescent assay ; HLA-typing ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: The amount of adenosine triphosphate (ATP) in human lymphocytes was determined using a technique based on light emission from a bioluminescent reaction with luciferin-luciferase. The amount of ATP changed when cells were incubated in the presence of specific HLA antisera and complement. For determination of intracellular ATP a modified method was applied, which was based on reduction of extracellular ATP by the addition of ATPase. The results of titration of an anti-human lymphocyte serum using the bioluminescence assay were in agreement with the results of fluorescence vitality staining. Bioluminescent HLA-determination in 57 cell samples each tested with 5 different antisera also gave good agreement (95.8%) with the conventional method. From these experimental data the calculated ATP content per lymphocyte was 0.135 ± 0.058 pg ATP.
    Additional Material: 3 Ill.
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  • 8
    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: Les polyesters linéaires donnent, dans les concentrations qui ont été examinées, une relation linéaire entre ηsp et la concentration. Avec des polyesters ramifiés on obtient une autre fonction. Un chlorure de polyvinyle, qui est considéré connue ramifié, montre une relation entre ηsp et la concentration analogue à celle des polyesters ramifiés, tandis qu'un autre échantillon du chlorure de polyvinyle correspond à la relation de Schulz-Blaschke.
    Notes: Lineare Polyester ergeben im untersuchten Bereich eine lineare Konzentrationsabhängigkeit von ηsp/c; bei verzweigten Polyestern zeigt sich eine andere Beziehung. Eine den verzweigten Polyestern analoge Konzentrationsabhängigkeit der Viskositätszahl ergab ein als verzweigt angesehenes Polyvinylchlorid, während ein anderes Muster dieses Polymerisates der Beziehung von Schulz-Blaschke entspricht.
    Additional Material: 4 Ill.
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  • 9
    ISSN: 0749-503X
    Keywords: Bovine leukemia virus ; PH05 ; PGK ; tumor virus ; Saccharomyces cerevisiae ; viral antigens ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: DNA sequences of the envelop (env) gene of the bovine leukemia virus (BLV) were expressed in the yeast saccharomyces cerevisiae. Two yeast promoters, the responsible PH05 promoter and the constitutive PGK promoter, were used to construct four expression plasmids either a sequence of the surface antigen gp51 or a (gp51 + gp30) sequence.The expressed hetrologous gene products were characterized by Western blot analysis and competitive radio-immunoassay. By means of Northern blot analysis the steady-state level of env-specific mRNA was analysed.The highest expression rate was obtained from recombinant plasmid YEpSG 94 comprising a gp51 sequence - a 630 base pair fragment containing 70% of the gp51 but lacking the N terminus - as well as the PH05 promoter including PH05 signal sequence and the PH05 terminator. The recombinant gp51 was partially lycosylated but the PH05 signal peptide did not seem to be cleaved off. No immunoreactive material could be found in the periplasm or in the culture medium.By means of monoclonal antibodies directed against eight different epitopes of viral gp51, all for sequential antigenic determinants were detected in the AH 216(YEpSG 94) expression product.
    Additional Material: 7 Ill.
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