37 research outputs found
Microscopic calculation of the spin-dependent neutron scattering lengths on 3He
We report on the spin.dependent neutron scattering length on 3He from a
microscopic calculation of p-3H, n-3He, and d-2H scattering employing the
Argonne v18 nucleon-nucleon potential with and without additional three-nucleon
force. The results and that of a comprehensive R-matrix analysis are compared
to a recent measurement. The overall agreement for the scattering lengths is
quite good. The imaginary parts of the scattering lengths are very sensitive to
the inclusion of three-nucleon forces, whereas the real parts are almost
insensitive.Comment: 9 pages, 1 figur
Tendência da mortalidade por neoplasias malignas selecionadas em Rio Branco, Acre, Brasil, 1980-2006
Search for light top squark pair production in final states with leptons and b -jets with the ATLAS detector in TeV proton-proton collisions
The results of a search for pair production of light top squarks are presented, using 4.7 fb^-1 of sqrt(s) = 7 TeV proton-proton collisions collected with the ATLAS detector at the Large Hadron Collider. This search targets top squarks with masses similar to, or lighter than, the top quark mass. Final states containing exclusively one or two leptons (e, mu), large missing transverse momentum, light-jets and b-jets are used to reconstruct the top squark pair system. Global mass scale variables are used to separate the signal from a large ttbar background. No excess over the Standard Model expectations is found. The results are interpreted in the framework of the Minimal Supersymmetric Standard Model, assuming the top squark decays exclusively to a chargino and a b-quark. Light top squarks with masses between 123-167 GeV are excluded for neutralino masses around 55 GeV
A globalização e o segundo sexo
Trata-se de uma reflexão que toma como ponto
de partida o processo de globalização
estabelecendo um contraponto entre as
características deste processo e as
proposições da Conferência Internacional
sobre População e Desenvolvimento/1994,
procurando discuti-lo com base nos escritos
de Sen (2000, 2001) sobre igualdade. Esta
análise comparativa indica que a discussão
sobre a igualdade entre os sexos tem se
globalizado enfatizando a situação da mulher
no mundo contemporâneo como um obstáculo
ao desenvolvimento, o que foi reafirmado nas
discussões da IV Conferência Mundial Sobre
a Mulher/1995. Em seguida, analisa os avanços
ocorridos no Brasil a partir dos
encaminhamentos dados às proposições da
Conferência e conclui colocando a busca da
igualdade entre os sexos, no campo dos
direitos e das oportunidades.This paper is a reflection which takes as a
starting point the process of globalization,
establishing a counterpoint between the
characteristics of this process and the
propositions of the International Conference
on Population and Development/1994, aiming
at discussing it according to Sen’s (2000,
2001) writings. This comparative analysis
indicates that the discussion about equality
between the sexes has become more
globalized, emphasizing women’s situation in
the contemporary world as an obstacle to
development, which was reaffirmed in the IV
Women’s World Convention in 1995.
Subsequently, the paper addresses the
advances occurred in Brazil after the
implementations of the propositions of the
Conference. Finally, it concludes by locating
the search of equality between sexes in the
fields of rights and opportunities as a social
necessity strictly connected to development.de partida el proceso de globalización,
estableciendo un contrapunto entre las
características del proceso y las proposiciones
de la Conferencia Internacional sobre
Población y Desarrollo/1994 , procurando
discutirlo con base en los escritos de Sen
(2000, 2001) sobre la igualdad. Este análisis
comparativo indica que la discusión sobre la
igualdad entre los sexos se ha globalizado y
enfatiza la situación de la mujer en el mundo
contemporáneo como un obstáculo al
desarrollo, lo cual fue reafirmado en las
discusiones de la IV Conferencia Mundial sobre
la Mujer/1995. A seguir, el trabajo analiza los
avances que ocurrieron en Brasil a partir de
los planteamientos propuestos en la
Conferencia y concluye con la búsqueda de la
igualdad entre los sexos, en el campo de los
derechos y de las oportunidades
Statins for the primary prevention of cardiovascular disease.
BACKGROUND: Reducing high blood cholesterol, a risk factor for cardiovascular disease (CVD) events in people with and without a past history of CVD is an important goal of pharmacotherapy. Statins are the first-choice agents. Previous reviews of the effects of statins have highlighted their benefits in people with CVD. The case for primary prevention was uncertain when the last version of this review was published (2011) and in light of new data an update of this review is required. OBJECTIVES: To assess the effects, both harms and benefits, of statins in people with no history of CVD. SEARCH METHODS: To avoid duplication of effort, we checked reference lists of previous systematic reviews. The searches conducted in 2007 were updated in January 2012. We searched the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library (2022, Issue 4), MEDLINE OVID (1950 to December Week 4 2011) and EMBASE OVID (1980 to 2012 Week 1).There were no language restrictions. SELECTION CRITERIA: We included randomised controlled trials of statins versus placebo or usual care control with minimum treatment duration of one year and follow-up of six months, in adults with no restrictions on total, low density lipoprotein (LDL) or high density lipoprotein (HDL) cholesterol levels, and where 10% or less had a history of CVD. DATA COLLECTION AND ANALYSIS: Two review authors independently selected studies for inclusion and extracted data. Outcomes included all-cause mortality, fatal and non-fatal CHD, CVD and stroke events, combined endpoints (fatal and non-fatal CHD, CVD and stroke events), revascularisation, change in total and LDL cholesterol concentrations, adverse events, quality of life and costs. Odds ratios (OR) and risk ratios (RR) were calculated for dichotomous data, and for continuous data, pooled mean differences (MD) (with 95% confidence intervals (CI)) were calculated. We contacted trial authors to obtain missing data. MAIN RESULTS: The latest search found four new trials and updated follow-up data on three trials included in the original review. Eighteen randomised control trials (19 trial arms; 56,934 participants) were included. Fourteen trials recruited patients with specific conditions (raised lipids, diabetes, hypertension, microalbuminuria). All-cause mortality was reduced by statins (OR 0.86, 95% CI 0.79 to 0.94); as was combined fatal and non-fatal CVD RR 0.75 (95% CI 0.70 to 0.81), combined fatal and non-fatal CHD events RR 0.73 (95% CI 0.67 to 0.80) and combined fatal and non-fatal stroke (RR 0.78, 95% CI 0.68 to 0.89). Reduction of revascularisation rates (RR 0.62, 95% CI 0.54 to 0.72) was also seen. Total cholesterol and LDL cholesterol were reduced in all trials but there was evidence of heterogeneity of effects. There was no evidence of any serious harm caused by statin prescription. Evidence available to date showed that primary prevention with statins is likely to be cost-effective and may improve patient quality of life. Recent findings from the Cholesterol Treatment Trialists study using individual patient data meta-analysis indicate that these benefits are similar in people at lower (< 1% per year) risk of a major cardiovascular event. AUTHORS' CONCLUSIONS: Reductions in all-cause mortality, major vascular events and revascularisations were found with no excess of adverse events among people without evidence of CVD treated with statins
Manicômio em circuito: os percursos dos jovens e a internação psiquiátrica The psychiatric hospital circuit: the trajectories of yong people prior to psychiatric hospitalization
Este artigo analisa a internação psiquiátrica de jovens, tomando-a não a partir de uma perspectiva psicopatológica individual, mas de uma dimensão subjetivo-social com base nos percursos desses jovens até a internação. O estudo foi realizado no Centro Integrado de Atenção Psicossocial para crianças e adolescentes do Hospital Psiquiátrico São Pedro, na cidade de Porto Alegre, Rio Grande do Sul, Brasil, por meio de oficinas com os jovens que estavam em atendimento na internação deste serviço. Percebeu-se uma recorrência que marca o percurso desses jovens e expressa um determinado modo de funcionamento da rede de atenção até a internação, acarretando na produção de um certo perfil desses jovens: pobreza sócio-econômica, baixa escolaridade e uso de drogas. Outro aspecto importante é o papel da ordem judicial nos encaminhamentos à internação, que obedece tanto a uma lógica de punição aos jovens e aos serviços, como também, paradoxalmente, constitui-se numa estratégia de acesso aos serviços de saúde.<br>This article analyzes psychiatric hospitalization of young patients from a contemporary social-subjective (rather than a psychopathological) perspective, following the trajectory of these youth prior to their admission. The study was conducted at the Center for Comprehensive Psychosocial Care for Children and Adolescents, São Pedro Psychiatric Hospital, in the city of Porto Alegre, Rio Grande do Sul State, Brazil. Recurrent traits in the trajectory of these youth expressed how the health care network functioned with them prior to their hospitalization, with a consistent pattern of socioeconomic deprivation, low schooling, and drug use. Another key aspect was the role of the court system in referring them for hospitalization, adhering to a kind of logic that punished both the youth and the services and paradoxically formed a strategy for access to health services