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  • 1985-1989  (1)
  • 1960-1964  (23)
  • Chemistry  (23)
  • Streptococci  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 65 (1987), S. 773-780 
    ISSN: 1432-1440
    Keywords: Streptococci ; Septicemia ; Acute leukemia ; High dose cytosine arabinoside
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty-nine adult patients with acute myelogenous leukemia AML who received 40 treatment courses with high dose cytosine arabinoside (HD-A), alone or combined with other cytotoxic drugs, for remission induction (RI) or postremission intensive consolidation (IC) were retrospectively analysed for types and severity of infectious complications. In this paper, we report the unusually high rate of streptococcal septicemia in our patients. Of 13 bacteremic infections in a total of 45 infectious episodes, 10 were caused by streptococci (9 viridans streptococci, 1 group B hemolytic streptococcus). Three of them were lethal. After reviewing all documented cases of streptococcal septicemia in the same study period, four additional cases among adult patients with AML were identified. Three of them have had antileukemic chemotherapy without HD-A, while one have had HD-A as a conditioning regimen for bone marrow transplantation. Only three cases were documented to occur in adult patients with AML. Patients treated with HD-A for RI or IC had a significantly lower risk of streptococcal septicemia during previous chemotherapy-associated febrile neutropenic episodes (1/55 vs 10/45;P=0.01). Neither prophylactic regimens including trimethoprim-sulfamethoxazole nor those without it were effective in preventing streptococcal septicemia. Further studies are needed to confirm these data before the value of additional or alternative prophylactic antibiotics is proven necessary.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 74 (1962), S. 260-260 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 154-154 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 280-280 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 2 (1962), S. 105-106 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 48 (1960), S. 91-99 
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Reactions on the reactive groups of macromolecular substances (e.g., cellulose) have long been known, even since before the structures of macromolecules were understood. H. Staudinger carried out numerous reactions with macromolecules, maintaining the degree of polymerization constant, in order to substantiate the macromolecular structure of the substances investigated (polymeric-analogous reactions). During the last fifteen years reactions with macromolecules have been investigated because it was desirable to compare the chemical diversity of low molecular weight compounds with the corresponding chemical diversity of macromolecular compounds. These endeavors bring forth materials which supplement the numerous macromolecular substances which are produced and used as materials for plastics, and therefore these materials should have as low reactivity and high stability as possible. Objectives are given for the preparation of macromolecules with a large variety of groups. From these objectives it is evident that, as in low molecular weight chemistry, macromolecular substances which possess functional groups of high reactivity are suitable as starting materials. Some of these which have been known for a long time but have been investigated only in recent years are polyaldehydes (polyacroleins and polymethylacroleins), polyacyl halides such as polyacryl chlorides and polyvinylsulfonyl chlorides and fluorides, and, most recently, polymeric organometallic compounds such as poly-p-lithiumstyrene. The reactions with these macromolecules are described and the properties of the resulting new polymeric substances are given.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 63 (1963), S. 30-52 
    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: A variation of the ULLMANN's biaryl coupling reaction for the synthesis of p-oligophenylenes is described. In this reaction a bifunctional iodo-compound is treated with a large excess of a monofunctional component. This method of synthesis, denoted as a cocondensed ULLMANN reaction, with yields of 40-50%, is explained in detail and the capability of this method is illustrated by numerous examples.In addition to a series of methyl substituted p-oligophenylenes, which includes derivatives from p-terphenyl to the p-septiphenyl, oligophenylenes with terminal or middle positioned fluorene residues as structural element were prepared. The melting points and the solubility of the products are comparatively discussed.
    Notes: Es wird ein Syntheseverfahren für p-Oligophenylene beschrieben, das eine Variante der ULLMANNschen Biarylverknüpfungsreaktion darstellt. Dabei wird eine bifunktionelle Jodverbindung mit einem größeren Überschuß an einer monofunktionellen Komponente umgesetzt. Dieses als cokondensierende ULLMANN-Reaktion bezeichnete Syntheseprinzip, das Ausbeuten von 40-50% d. Th. ergibt, wird eingehend erläutert und die Leistungsfähigkeit an zahlreichen Beispielen belegt.Neben einer Reihe von methylsubstituierten p-Oligophenylenen, welche Derivate vom p-Terphenyl bis zum p-Septiphenyl einschließt, werden auch Oligophenylene mit endständigem oder mittelständigem Fluorenrest als Strukturelement hergestellt. Schmelzpunkt und Löslichkeit der Produkte werden vergleichend diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 9
    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: A simple apparatus to measuring the course of the polymerization of gaseous monomers is described; the consumption of the monomer is measured volumetrically in a closed system. Influence and variation of reaction conditions on the polymerization of α-olefins with organometallic catalysts are discussed. The method presents a good reproducibility and has a range of error of ± 4%.
    Notes: Es wird eine einfache Apparatur zur Messung des Reaktionsverlaufs bei der Polymerisation gasförmiger Monomerer beschrieben. In einem geschlossenen System wird der Verbrauch des Monomeren volumetrisch verfolgt. Der Einfluß verschiedener Reaktionsbedingungen auf die Polymerisation von α-Olefinen mit metallorganischen Mischkatalysatoren wird diskutiert. Die Methode bietet eine gute Reproduzierbarkeit und weist eine Fehlerbreite von maximal ± 4% auf.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 48 (1960), S. 399-404 
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The cationic polymerization of 1,3,5-trioxane in methylene dichloride with boron trifluoride, producing polyoxymethylene, was investigated. An ionogenic cocatalyst is not required in this polymerization. During the induction period, initially formed, short polyoxymethylene chains depolymerize to formaldehyde until a constant equilibrium concentration of formaldehyde is reached. This concentration is equal to the ceiling concentration of formaldehyde in cationic polymerization under the conditions chosen for the experiments. The nonstationary state and the strong acceleration of the polymerization of trioxane are due mainly to the lack of an effective kinetic termination reaction. Thus the concentration of growing polyoxymethylene cations increases with time.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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