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Digitale Medien

Gold: Hepatotoxic and cholestatic reactions (1985)

Hanissian, A. S. ; Rothschild, B. M. ; Kaplan, S.

Springer

Clinical rheumatology 4 (1985), S. 183-188

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ISSN: 1434-9949

Schlagwort(e): Gold ; Rheumatoid Arthritis ; Juvenile Rheumatoid Arthritis ; Hepatotoxiciy

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary Gold hepatotoxicity is an uncommon but significant clinical problem. Hepatitis was first manifested one day to four weeks after the last dose of gold at a cumulative range of 35 to 2900 mg. An interesting dichotomy was noted between cholestatic and hepatotoxic reactions. Hepatotoxic reactions were associated with other clinical signs of hyper-sensitivity, thus facilitating differential diagnosis from viral hepatitis. Sudden clinical improvement in a patient receiving gold should stimulate evaluation for a hepatotoxic reaction.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02032291

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Digitale Medien

A pyrolysis/GC/MS study of plasma-polymerized toluene - evidence for carbon atom scrambling in the plasma (1986)

Kaplan, S. ; Dilks, A. ; Crandall, R.

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 24 (1986), S. 1173-1183

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ISSN: 0887-624X

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Mass spectral analysis of the gas-chromatography-separated pyrolysis products of the solid polymer formed in a toluene plasma has shown the presence of a number of phenyl-containing structures. Of particular interest is the biphenyl product, whose isotopic distribution patterns are very different for the polymers prepared from natural 13C abundance and 13CH3-labeled toluene. This result is interpreted in terms of carbon atom scrambling via seven-membered-ring intermediates in the gas phase during plasma polymerization. A comparison of measured isotopic patterns with calculated patterns reveals that 34 ± 10% of the toluene molecules scramble prior to polymer formation. This value is similar to an upper bound on scrambling determined here but based on earlier NMR results1 and reinforces a model for the structure of plasma-polymerized toluene established in that work.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pola.1986.080240607

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Digitale Medien

Effects of moisture on glycidyl reactions with carboxylic acid anhydrides (1966)

Kaplan, S. L. ; McAllister, L. E. ; Stewart, A. T.

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 6 (1966), S. 65-70

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ISSN: 0032-3888

Schlagwort(e): Chemistry ; Chemical Engineering

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: Moisture present in epoxy anhyride composites may hydrolyze the anhydride and cause major changes in the mechanical and chemical properties of the final composite. Heat distortion data and infrared spectroscopy are used to analyze the changes caused by the presence of the moisture. As the concentraton of water is increased, there is a decrease in the heat distortion or gass transition temperature. The decrease is due to a change in the crosslinking network and is caused by the reduction of the functonality of the epoxy group for acid as compared to the anhydride. Where rigid specifications must be met it is essential that the moisture level in the fillers, resins, etc. be kept constant.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pen.760060112

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