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Digitale Medien

Action de la rubratoxine B sur la respiration des mitochondries hépatiques de rat (1975)

Bernard, C. ; Dumas, P.

Springer

Mycopathologia 55 (1975), S. 53-55

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ISSN: 1573-0832

Schlagwort(e): Rubratoxine B ; Mitochondria ; Rat

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Abstract The in vitro effect of rubratoxin B on the electron transport system of rat liver mitochondria was investigated. This mycotoxin depressed oxygen consumption in ADP-lacking mitochondria and in ADP-coupled mitochondria, using succinate or β-hydroxybutyrate as substrats. Rubratoxin B is neither an oxidative-phosphorylation inhibitor nor uncoupling agent. Its effect is compared with aflatoxin B1.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00467092

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Digitale Medien

NaCl-induced accelerated oxidation of a titanium alloy (1976)

Dumas, P. ; John, C. St.

Springer

Oxidation of metals 10 (1976), S. 127-134

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ISSN: 1573-4889

Schlagwort(e): hot corrosion ; titanium alloys ; sodium chloride ; water vapor

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract The effect of a surface deposit of NaCl on the oxidation characteristics of a high-temperature titanium alloy was studied in the temperature range of 400–600°C. The influence of the water vapor content in the oxidizing environment was examined in the light of an existing electrochemical mechanism proposed for the hot-salt stress-corrosion-cracking phenomenon found in titanium alloys. It was established that the NaCl deposit increased the oxidation rate by a factor of 100 for hygrometry levels of 10 ppm or higher. Further, there exists a hygrometry threshold between 10 and 5×10−3 ppm below which the NaCl-induced accelerated oxidation decreases with decreasing hygrometry level. Electron microprobe analysis suggests that the titanium matrix reacts with chlorine before forming rutile.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00614242

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