Abstract The synergistic effect of crevice corrosion and galvanic coupling on the degradation 304 stainless steel fasteners exposed to a chloride environment was investigated using electrochemical surface analysis techniques. Results obtained revealed that region fastener showed lower resistance due decreased passivation induced by geometry low oxygen conditions, while with higher supply exhibi...

The interaction of the Rhodospirillum rubrum cytochrome bc1 complex with R. rubrum cytochrome c2 and horse cytochrome c was studied using specific lysine modification and ionic strength dependence methods. In order to define the reaction domain on cytochrome c2, several fractions consisting of mixtures of singly labeled carboxydintrophenyl-cytochrome c2 derivatives were employed. Fraction A con...

In recent years, concerns over the impact of internal combustion engine hydrocarbon emissions on the environment have prompted tighter regulation on allowable emission levels. While much work has been done on reducing hydrocarbon emissions after they have entered the exhaust stream, less direct monitoring of the emission sources has been performed. An optically accessible four-stroke internal c...

The predominant dental plaque flora was compared between two grouf)s of adult beagle dogs. (1> ten with gingivitis and (2) ten with advanced periodontitis. Plaque from a maxillary third premolar was cultured under strict anaerobic conditions. Specimens comprising the marginal periodontal tissues were taken at the plaque sampling site and analyzed for some histological parameters of periodontal ...

It is very important to implement sex education for college students who are in the period of adolescent development. Good has an influence on establishment individual self-concept and formation perfect personality. The mission colleges universities cultivate students’ comprehensive healthy development, they should take responsibility being main force implementing students. At present, only one...