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  • 1
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Two cases of a so-called eosinophilic leukemia are described with regard to morphological and clinical aspects. These cases are concerning a special variant of acute myelosis characterized by the following items: high eosinophilia of the intra- and in part of the extramedullary infiltrates contrasted by a moderate or low blood eosinophil count; intra- and extramedullary blast cell proliferation with blastic leukocytosis; cytochemical atypism of the eosinophils: unusual naphthol-AS-D-chloroacetatesterase activity, strong PAS-reaction; disarrangement of granulogenesis as revealed by electron microscopy. The presented cases are similar to others, in literature classified as “eosinophilic leukemia”. In this context the problem of monophylic leukemia is discussed in consideration of results obtained by cytochemical analysis of extramedullary leukemic infiltrates.
    Notes: Zusammenfassung Zwei Fälle einer sogenannten Eosinophilenleukämie werden hinsichtlich morphologischer und klinischer Aspekte beschrieben. Dabei handelt es sich um eine spezielle Form akuter Myelosen, die durch folgende Besonderheiten gekennzeichnet ist: hohe Eosinophilie der intra- und teilweise auch extramedullären Infiltrate bei relativ geringer Bluteosinophilie; intra- und extramedulläre Blastenproliferation mit starker Ausschwemmung; kennzeichnende zytochemische Atypien in Form einer ungewöhnlichen Aktivität der Naphthol-AS-D-chloroacetat-esterase und einer stark positiven PAS-Reaktion; besonders elektronenmikroskopisch deutlich sichtbare Dissozation und teilweise Arretierung der eosinophilen Granulogenese. — Die mitgeteilten Fälle zeigen Übereinstimmungen mit anderen, in der Literatur teilweise ebenfalls als “Eosinophilenleukämie” klassifizierten Formen. In diesem Zusammenhang wird die Problematik monophyler Leukosen unter Berücksichtigung der durch die zytochemische Analyse exakt bestimmbaren Differenzierung extramedullärer leukotischer Infiltrate diskutiert.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 51 (1973), S. 473-474 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 61 (1974), S. 385-388 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 3640-3657 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Anodic Dimerization of Enol EthersEight enol ethers are dimerized in an undivided cell at a graphite anode in methanol/2,6-lutidine/sodium perchlorate to acetals of 1,4-dicarbonyl compounds in 30 to 60% yields. The electrochemical reaction is first order with respect to enol ether and zero order with respect to methanol and nα = 1. These data as well as the tail to tail coupling of the enol ethers indicate a reaction via radical cations of the enol ethers. Dimerization via methoxy radicals is improbable. The half wave potentials of the enol ethers have been estimated to be E1/2 = 1.72 + A (V versus Ag/AgCl), with A being -0.3 or -0.45 V for substitution of H by one or two alkyl groups, respectively, and + 0.4 V for substitution of H by CO2Et.
    Notes: Acht Enoläther werden in einer ungeteilten Zelle an einer Graphitanode in Methanol/2,6- Lutidin/Natriumperchlorat in Ausbeuten zwischen 30 und 60% zu Acetalen von 1,4-Dicarbonylverbindungen dimerisiert. Die voltammetrischen Daten: elektrochemische Reaktion 1. Ordnung bezüglich Enoläther, elektrochemische Reaktion nullter Ordnung bezüglich Methanol und nα = 1 sowie die Schwanz-Schwanz-Verknüpfung der Enoläther legen einen Reaktionsverlauf über Enoläther-Radikalkationen nahe. Die Kupplung über Methoxy-Radikale ist unwahrscheinlich. Die Halbwellenpotentiale der Enoläther sind über E1/2 = 1.72 + A (V gegen Ag/AgCl) abschätzbar, wobei A = - 0.3 bzw. -0.45 V für Substitution von H gegen ein bzw. zwei Alkylgruppen und + 0.4 V für Ersatz von H gegen CO2Ät beträgt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 2398-2418 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Anodic Addition of Anionized 1.3-Dicarbonyl Compounds to OlefinesSodio-dimethyl malonate (1), -acetylacetonate (2) and -methyl acetoacetate (3) can be added anodically to cyclohexene, ethyl vinyl ether, styrene, α-methylstyrene and butadiene. Products are additive dimers (2.3-diphenylbutanes, 1.5-dienes) and bifunctional substituted monomers (acetals of ω-ketoesters, cyclic ortho esters, 2.3-dihydrofuranes). The product formation seems to be initiated by le-oxidation of 1-3 to bis(carbonyl)methyl radicals, which add to double bonds. These adducts combine to additive dimers and/or are oxidized to carbonium ions, which are solvolyzed by methanol or cyclize intramolecularly.
    Notes: Natrium-malonsäure-dimethylester (1), -acetylacetonat (2) und -acetessigsäure-methylester (3) lassen sich anodisch in Stromausbeuten zwischen 20 und 60% an Cyclohexen, Äthylvinyläther, Styrol, α-Methyl-styrol und Butadien addieren. Als Produkte werden additive Dimere (2.3-Diphenyl-butan-Derivate, 1.5-Diene) und bifunktionell substituierte Monomere (Acetale von γ-Ketoestern, cyclische Orthoester, 2.3-Dihydro-furane) isoliert. Die Bildung der Addukte dürfte mit der 1 e-Oxydation von 1-3 zu Bis-carbonyl-methyl-Radikalen beginnen, die sich an Doppelbindungen addieren. Die Primäraddukte stabilisieren sich durch Kombination zu additiven Dimeren und/oder werden anodisch zu Carbonium-Ionen oxydiert, die methanolysieren oder intramolekular cyclisieren.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 86 (1974), S. 480-481 
    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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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 46 (1974), S. 571-571 
    ISSN: 0009-286X
    Keywords: Statistik ; EDV ; Korrelationsrechnung ; Merkmalverteilungen ; Braunkohle-Haufwerke ; Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 752 (1971), S. 102-108 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Reactions of 2-Hydroxy- and 2-Amino-3,5,6-trimethyl-1,4-benzoquinonesThe two methods2-4) described for the synthesis of 2-hydroxy-3,5,6-trimethyl-1,4-benzoquinone (3) do not lead to identical products; this discrepancy is cleared up. In addition 2-amino-3,5,6-trimethyl-1.4-benzoquinone (10) is synthesized. Experiments to obtain 2-hydroxy-5,6-dimethyl-1,4-benzoquinone (17) in analogy to the synthesis of 32) afford only the 2-methoxy derivative 18.
    Notes: Die beiden für 2-Hydroxy-3.5.6-trimethyl-benzochinon-(1.4) (3) beschriebenen Synthesemethoden2-4) führen nicht zu identischen Produkten. Dieser Widerspruch wird aufgeklärt. Außerdem wird 2-Amino-3.5.6-trimethyl-benzochinon-(1.4) (10) synthetisiert. Beim Versuch, 2-Hydroxy-5.6-dimethyl-benzochinon-(1.4) 17) analog 3 darzustellen2), wird das 2-Methoxy-Derivat 18 erhalten.
    Type of Medium: Electronic Resource
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