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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 7 (1980), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 36 (1980), S. 916-918 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 30 (1922), S. 234-243 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zusammenfassung 1. Sulfosalizylsäure beeinflußt die Quellung der Gelatine nach dem allgemeinen Typus aller Säurequellungen: Förderung in kleinen Konzentrationen, Hemmung in größeren. Auch der „osmotische Druck“ bzw. die Solquellung von Hühnereiwelßlösungen wird durch kleine Konzentrationen von Sulfosalizylsäure gefördert, während größere Konzentrationen bekanntlich flocken. Es wurden handliche Zellen für Messungen der Wasseranziehung von Solen beschrieben. 2. Nach früheren Untersuchungen spielt die Quellung des Substrats eine wichtige Rolle bei der peptischen Verdauung, insofern als Quellungsförderung z. B. durch Säuren auch eine Förderung des Fermentvorganges bewirken. Als Gegensatz zu dieser Regel haben L. Michaelis und A. Gyemant darauf hingewiesen, daß auch die eiweißflockende Sulfosalizylsäure die peptische Verdauung ermöglicht. Aus den Ergebnissen vorliegender Arbeit geht hervor, daß hier keine Ausnahme von obiger Regel vorliegt, da die Sulfosalizylsäure auch quellend wirkt und zwar in Konzentrationen von derselben Größenordnung, bei denen nach L. Michaelis und A. Gyemant auch das Optimum der peptischen Verdauung liegt. Auf weitere kolloidchemische Variablen bei der Pepsinverdauung, wie insbesondere auf die Solbildung oder kolloide Auflösung durch Säuren wird hingewiesen.
    Type of Medium: Electronic Resource
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  • 4
    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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  • 5
    ISSN: 1432-1912
    Keywords: Thromboxane A2 (TXA2) ; Prostacyclin (PGI2) ; Human platelets ; Bovine coronary artery ; Non-steroidal antiinflammatory drugs ; Prostaglandin-cyclooxygenase ; Bioassay ; RCS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The action of the non-steroidal antiinflammatory drugs indomethacin, tiaprofenic acid, diclofenac and meclofenamate on vascular and plateletcyclooxygenases was studied by measuring the arachidonic acid-induced thromboxane A2 (TXA2)-formation of washed human platelets and prostacyclin (PGI2)-formation of bovine coronary artery rings. TXA2 was bioassayed as RCS on rabbit aorta strips, PGI2 in terms of its antiaggregatory activity on ADP-induced aggregation of human platelet-rich plasma. All of the substances studied produced concentration-dependent inhibition of PGI2- and RCS-release. The IC50 [μM] in inhibition of RCS-formation was 0.019 for indomethacin, 0.070 for tiaprofenic acid but 44.9 for meclofenamate and 63.2 for diclofenac. The IC50 [μM] in inhibition of PGI2-release was 0.42 for diclofenac, 0.63 for indomethacin and 0.99 for tiaprofenic acid. The data suggest (1) high sensitivity of human platelet-cyclooxygenase against indomethacin and tiaprofenic acid, (2) different sequence of the substances studied in inhibiting arachidonic acid-induced TXA2- and PGI2-formation. The possible therapeutic value of selective inhibition of platelets and vascular cyclooxygenases in discussed.
    Type of Medium: Electronic Resource
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  • 6
    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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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 10 (1980), S. 233-237 
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A brief review of the origins of bipolar leakage currents, the means used for its measurement and calculation and the importance of minimizing the phenomenon, is followed by a novel means of computing leakage currents more accurately than hitherto possible, using a commercially available simulation program. This has the further advantage that the reali-V characteristics of an electrochemical cell can be used, there being no need to represent the cell itself as a zener diode which is a poor representation of reali-V cell characteristics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 14 (1984), S. 605-613 
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The electrodeposition of copper-silver and copper-nickel powders from aqueous ammoniacal solutions at a continuously scraped rotating cylinder cathode is described. Ag-Cu powders can be prepared under these conditions, but the individual particles are inhomogeneous and the extent of this inhomogeneity is examined. Surface areas (from BET) and particle size distributions are reported, and the morphology is considered. Cu-Ni powders deposited under these conditions are heavily contaminated with oxide/ hydroxides and this is attributed to an increase in near-cathode pH.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 13 (1983), S. 189-207 
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Anodic or cathodic processes in which protons are released or consumed, respectively, lead to local pH changes at the electrode surface. The phenomenon is important in several branches of metal finishing, in corrosion, electro-organic synthesis and other branches of applied electrochemistry, as well as being a factor which can invalidate mechanistic investigations. The concept of ‘pHs’ (near-surface pH) is examined, as are the experimental techniques which have been used to measure it. Many of these are inherently weak. Published results are shown to be largely discrepant, both in respect of the magnitude of the effect and even its incidence. Attempts to treat the phenomenon theoretically are briefly summarized.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 10 (1980), S. 635-647 
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The performance of undivided cells with disparate anode-cathode ratios was studied using cerium (IV) reduction as a test reaction. The effects of electrode material and surface texture are reported. Results have been fitted to a computer-based model, and the role of bubble evolution and electrode coverage by bubbles is considered. Results are contrasted with those of a similar study using hypochlorite formation, which can give qualitatively different results.
    Type of Medium: Electronic Resource
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