Sulfur doped graphite prepared via arc discharge of carbon rods in the presence of thiophenes

Sulfur doped graphite is obtained by arc vaporization of graphite rods in the presence of thiophenes. The surfaces of the carbon rods become coated with a layer of a sulfur-doped carbon. X-ray diffraction indicates a small d spacing expansion, and there is a slight decrease in the electrical conductivity of the doped layer. X-ray photoelectron spectroscopy confirms that sulfur incorporation has occurred at a level of 0.6% and that the sulfur atoms are in a neutral state. X-ray photoemission results indicate that S incorporation induces a shift of the valence band toward the Fermi level. (C) 1999 American Institute of Physics. [S0021-8979(99)03919-5]

Hyperinfection by Strongyloides

We report three cases of disseminated hyperinfection by Strongyloides in primates Callithrix jacchus and Callithrix penicillata in captivity and with progressive weight loss syndrome. Histopathological examination revealed severe lesions in lungs, liver, and intestines with the presence of Strongyloides larvae and in a generalized manner, including other organs such as the pancreas and heart.Programa de Pós-Graduação em Saúde e Produção Animal na Amazônia Universidade Federal Rural da Amazônia (UFRA)Laboratório de Patologia Animal Instituto da Saúde e Produção Animal (ISPA) Universidade Federal Rural da Amazônia (UFRA)Programa de Pós-graduação em Medicina Veterinária Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista (UNESP)Programa de Pós-graduação em Medicina Veterinária Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista (UNESP