Comparison between the Torquato-Rintoul theory of the interface effect in composite media and elementary results

We show that the interface effect on the properties of composite media recently proposed by Torquato and Rintoul (TR) [Phys. Rev. Lett. 75, 4067 (1995)] is in fact elementary, and follows directly from taking the limit in the dipolar polarizability of a coated sphere: the TR ``critical values'' are simply those that make the dipolar polarizability vanish. Furthermore, the new bounds developed by TR either coincide with the Clausius-Mossotti (CM) relation or provide poor estimates. Finally, we show that the new bounds of TR do not agree particularly well with the original experimental data that they quote.Comment: 13 pages, Revtex, 8 Postscript figure

Recomendações para a produção de mudas de cajueiro em tubetes.

Recomendacoes para a producao de mudas de cajueiro em tubetes.bitstream/item/33816/1/Ct-068.pd

Detection of Salmonella spp. in artisanal cheese of Campo Grande, State of Mato Grosso do Sul.

Brazilian artisanal cheeses are characterized by the use of raw milk, as well as following simple and traditional manufacturing technology. Despite the efforts of the Brazilian authorities to regulate the production and commercialization of artisanal cheeses, these products often does not comply with the hygienic?sanitary requirements demanded by official agencies. Salmonella sp. continues to be a major concern for the dairy industry because these bacteria have caused outbreaks of illness and have been isolated from various dairy products. In the municipality of Campo Grande, the trade of artisanal fresh cheeses, from different regions of the state of Mato Grosso do Sul, is common. In this context, the survey of Salmonella spp. in artisanal cheeses provides important information for health authorities in order to prevent salmonellosis in the population

Normas de produção de mudas.

As presentes normas objetivam estabelecer condicoes que devem ser obedecidas para a producao de mudas com qualidade e tecnologias aplicadas pela Embrapa Agroindustria Tropical.bitstream/CNPAT-2010/5462/1/Dc-041.pd

Desenvolvimento de um PCR multiplex para detecção simultânea de vírus e fitoplasma em mandioca (Manihot esculenta).

A mandioca (Manihot esculenta Cranz.) é de grande importância por ser considerada a base de segurança alimentar de países em desenvolvimento, sendo a principal fonte de energia na dieta das populações de países pobres. Muitos fatores abióticos (seca) e bióticos (pragas e doenças) contribuem para a baixa produtividade da cultura, dentre eles doenças que podem causar prejuízos consideráveis