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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 981 (1989), S. 61-68 
    ISSN: 0005-2736
    Keywords: CD4 ; Erythrocyte ; Glycophorin ; Membrane defect ; Membrane-protein interaction ; pH effect
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 981 (1989), S. 51-60 
    ISSN: 0005-2736
    Keywords: CD4 ; Erythrocyte ; Flow cytometry ; Glycophorin ; Immunoelectron microscopy ; Membrane-protein interaction
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 109 (1985), S. 152-155 
    ISSN: 1432-1335
    Keywords: Ovarian cancer ; Prognostic factors ; Age ; Stage ; Grade
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary For 230 patients with common epithelial ovarian cancer, the prognostic impact of age was examined. Statistical analysis was done using proportional hazard models, 3- and 5-year survival rates and median survival of stratified groups, and the Kaplan-Meier mean. Taking the age-adjusted mortality into account, the prognosis of the older patients was significantly worse. This effect depended primarily on early mortality (survival time 〈2 months). A comparative analysis was made of the prognostic factors age, grade, and stage, taking into account the correlation between factors. This analysis showed that, for our series, age was of lesser prognostic significance than grading, and both of these were of much less prognostic importance than staging.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 316 (1974), S. 199-208 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das Strukturprinzip des kristallisierten 2,5-Pentamethylenimino-1,4-benzochinons konnte mit der SAP-Methode aufgefunden werden. Die Verfeinerung der Struktur erfolgte durch dreidimensionale Fouriermethoden und anisotrope least-squares-Rechnungen. Der abschließende R-Index für 1 270 auf Filmen registrierte Reflexe beträgt 0,096. Die Abmessungen der Elementarzelle sind: a = 6,858 Å; b = 8,432 Å; c = 6,659 Å; α = 86,78°; β = 99,75°; γ = 108,68°. Die Raumgruppe ist P 1. Es liegt ein zentrosymmetrisches Molekül in der Elementarzelle.Im Chinonring tritt ein extrem langer C—C-Abstand mit 1,522 Å auf, die beiden anderen C—C-Abstände im Chinonring betragen 1,364 Å und 1,433 Å. Bemerkenswert sind die drei sehr unterschiedlichen Bindungslängen am dreibindigen N-Atom. Ein N—C-Abstand beträgt 1,361 Å, die beiden anderen N—C-Abstände betragen 1,477 Å bzw. 1,480 Å. Das Molekül kann in seiner Elektronenstruktur ähnlich wie die Moleküle in [1] und [2] nicht als chinonähnlich betrachtet werden. Es enthält vielmehr Polymethin-Polyen-ähnliche Bauelemente.Die Geometrie des Piperidin-Ringes entspricht vollständig den Erwartungswerten, sowohl hinsichtlich der Bindungslängen als auch der Bindungswinkel. Er hat exakte Sesselform.Der Kristallverband kann als dreidimensional dichte Packung der C16H22N2O2-Moleküle angesehen werden. Es berühren sich intermolekular fast ausschließlich Wasserstoffatome untereinander.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 334 (1992), S. 95-97 
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 338 (1996), S. 642-646 
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Novel Cu(II) complexes derived from N,N′ P-ethylene-bis-(1′,5′,5′-trimethyltetramic acid-3′-acetiminato)copper(II) aCu [1] were evaluated as contrast agents for NMR microscopy and therefore tested for penetration into living cells (Xenopus laevis oocytes). By in vitro 1H NMR relaxation (T1) and atomic absorption spectroscopy measurements (AAS) we confirmed, that independent of the complex isomers (Z/Z, Z/E, E/E, E/Z) compounds with alkyl substituents in R1 - R5 exclusively were able to penetrate the plasma membranes. It is noteworthy that compounds containing the tetramic acid moieties from both a penetrating and a non-penetrating complex most likely were accumulated in the plasma membrane and/or plasma membrane-associated vesicles, which was concluded from in vitro NMR measurements combined with AAS trace analyses. In this context the crystal and molecular structure of the ‘chimerical’ C17H22N4O4Cu · 3H2O kCu · 3H2O were determined by x-ray analysis. The x-ray structural parameters are discussed in detail.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 332 (1990), S. 1005-1012 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 4-Anilino-5,7-dinitrobenzofurazan - Studies on Structure and Reactivity4-Anilino-5,7-dinitrobenzofurazan 3 reacts with gaseous ammonia at room temperature under elimination of aniline leading to 4. Compound 3 may also be transformed into the isolable salt 6 by treatment with aqueous KHCO3, whereas 4 reacts with KHCO3 furnishing potassium 5, 7-dinitrobenzofurazan-4-olat 5. As shown by X-ray analysis and CNDO/2 calculations of 3, the case with which the nucleophilic substitutions proceed may be explained by the assumption of an azomethine structure in 4 and 6.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 36 (1985), S. 361-365 
    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 radical initiated grafting in solution of maleic anhydride on atactic polypropylene and the synthesis of chlorinated atactic poly(propylene-g-maleic anhydride) are studied. The dynamic-mechanical behaviour and the solution properties of graft copolymers are described.
    Notes: Die radikalische Lösungspfropfung von Maleinsäureanhydrid auf ataktisches Polypropylen sowie die Synthese chlorierter ataktischer Poly(propylen-g-maleinsäureanhydride) e werden untersucht. Das dynamisch-mechanische Verhalten und die Lösungseigenschaften der Pfropfcopolymere werden beschrieben.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 36 (1985), S. 455-456 
    ISSN: 0323-7648
    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
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 38 (1987), S. 655-658 
    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 average bond lengths and bond angles of the structural units of polycyanurates synthesized by polycyclotrimerization of 2,2-bis(4-cyanatophenyl)propane were measured by single crystal X-ray analysis of model compounds. An off-lattice Monte Carlo model was developed for the simulation of the geometrical structure of cyanurate oligomers with polymerization degrees up to 31. Excluded volume effects were taken into account in the form of hard spheres. The calculated results show that an occurrence of intramolecular cyclizations, which was supposed in the literature, is possible.
    Notes: Die Größen der Bindungsabstände und -winkel der in Polycyanuraten auf Basis von 2,2-Bis(4-cyanatophenyl)propan auftretenden Strukturelemente wurden durch Röntgenkristallstrukturanalyse von Modellsubstanzen ermittelt. Darauf aufbauend wurde ein Monte-Carlo off-lattice Modell zur Simulation der geometrischen Struktur auftretender Oligomere bis zu einem Polymerisationsgrad 31 entwickelt, in dem Effekte des ausgeschlossenen Volumens in Form von hard-sphere Potentialen berücksichtigt sind. Die Ergebnisse belegen unter anderem die aus experimentellen Daten resultierende Vermutung des Auftretens intramolekularer Cyclisierungen.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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