Rio de Janeiro State University

About: Rio de Janeiro State University is a education organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 16631 authors who have published 30919 publications receiving 465753 citations. The organization is also known as: UERJ & Rio de Janeiro State University.

Numerical studies of conductivity and Fano factor in disordered graphene

Abstract: Using the recursive Green's function method, we study the problem of electron transport in a disordered single-layer graphene sheet. The conductivity is of order ${e}^{2}∕h$ and its dependence on the carrier density has a scaling form that is controlled solely by the disorder strength and the ratio between the sample size and the correlation length of the disorder potential. The shot noise Fano factor is shown to be nearly density independent for sufficiently strong disorder, with a narrow structure appearing at the neutrality point only for weakly disordered samples. Our results are in good agreement with experiments and provide a way for extracting microscopic information about the magnitude of extrinsic disorder in graphene.

Cytotoxic Cell Vacuolating Activity from Vibrio cholerae Hemolysin

Abstract: A Vibrio cholerae cytotoxin, designated VcVac, was found to cause vacuolation in Vero cells. It was originally detected in the pathogenic O1 Amazonia variant of V. cholerae and later shown to be produced in environmental strains and some El Tor strains. Comparison of VcVac production in various strains suggested that hemolysin was responsible for the vacuolating phenotype. Genetic experiments established a firm correlation between vacuolation and hemolysin production. The mammalian cell vacuolating activity of the V. cholerae hemolysin is a new property of this protein and points to a previously unknown type of interaction between V. cholerae and its host.

Birth defects and health strategies in Brazil: an overview

Abstract: Birth defects have increased progressively in Brazil, shifting from the fifth to the second cause of infant mortality from 1980 to 2000, thus highlighting the need for specific health policy strategies. Some governmental and nongovernmental actions related to birth defects in Brazil include information services on teratogenic agents and inborn errors of metabolism, monitoring of birth defects, neonatal screening and treatment of some genetic diseases, and rubella immunization. In addition, flour fortification with folic acid for prevention of certain birth defects has begun recently. Despite the importance of such initiatives, it is still difficult to view birth defects from a comprehensive perspective. A specific national policy on birth defects must be formulated. Active participation is needed by the Ministry of Health, using existing genetic services as the backbone, in order to develop a regionalized, hierarchical, and functional network related to birth defects in Brazil.

Promovendo a saúde e a cidadania do idoso: o movimento das universidades da terceira idade

Abstract: O movimento Universidades da Terceira Idade vem experimentando incremento substancial desde os anos 70, difundindo conceitos e experiencias praticas que representam uma nova forma de promover a saude da pessoa que envelhece, a partir de uma acao interdisciplinar comprometida com a insercao do idoso como cidadao ativo na sociedade. O movimento visa contribuir para a promocao da saude fisica, mental e social das pessoas idosas, lancando mao das possibilidades existentes nas universidades. No Brasil, existem pelo menos 150 programas dessa natureza. Os resultados vem sendo sistematizados e debatidos, trazendo novas perspectivas de insercao e ampliacao da participacao social e de melhoria das condicoes de saude, e qualidade de vida dos seus participantes. O artigo discute a importância do movimento como estrategia para a melhoria da qualidade de vida da populacao idosa. A partir da contextualizacao do movimento no mundo e no Brasil, uma experiencia desenvolvida na Universidade do Estado do Rio de Janeiro (UERJ), desde 1993, e descrita e analisada. Tendo como pressupostos basicos a interdisciplinaridade, a participacao social e a promocao da saude, a proposta da UERJ utiliza metodologia adaptada as especificidades desta clientela no desenho de um programa amplo de atencao integral a saude do idoso.