The effects of multiple repairs on Inconel 718 weld mechanical properties

Inconel 718 weldments were repaired 3, 6, 9, and 13 times using the gas tungsten arc welding process. The welded panels were machined into mechanical test specimens, postweld heat treated, and nondestructively tested. Tensile properties and high cycle fatigue life were evaluated and the results compared to unrepaired weld properties. Mechanical property data were analyzed using the statistical methods of difference in means for tensile properties and difference in log means and Weibull analysis for high cycle fatigue properties. Statistical analysis performed on the data did not show a significant decrease in tensile or high cycle fatigue properties due to the repeated repairs. Some degradation was observed in all properties, however, it was minimal

Temperature dependence of the coercive field in single-domain particle systems

The magnetic properties of Cu97Co3 and Cu90Co10 granular alloys were measured over a wide temperature range (2 to 300K). The measurements show an unusual temperature dependence of the coercive field. A generalized model is proposed and explains well the experimental behavior over a wide temperature range. The coexistence of blocked and unblocked particles for a given temperature rises difficulties that are solved here by introducing a temperature dependent blocking temperature. An empirical factor gamma arise from the model and is directly related to the particle interactions. The proposed generalized model describes well the experimental results and can be applied to other single-domain particle system.Comment: 7 pages, 8 figures, revised version, accepted to Physical Review B on 29/04/200

Importância do uso de sementes de boa qualidade de arroz irrigado para a safra 2011/2012.

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Atenção ao comportamento da ferrugem asiática na safra de soja 2008/2009, para a próxima safra.

bitstream/CPACT-2010/12300/1/soja-Cley.pdfPublicado em: site do Grupo Cultivar, em 23/10/09; site Jurídico Brasil, em 26/10/09; site Portal do Agronegócio, em 26/10109; site Infobibos, em 02/11/2009

Cuidados de Enfermagem ao Doente Ventilado com Óxido Nítrico

A Nitroterapia como forma de tratamento foi identificada pela primeira vez em 1987. Nesta data foi identificado o Óxido Nítrico (ON) como um factor de relaxamento derivado do endotélio, com uma acção importante na regulação do tónus vascular, na função plaquetária, na acção bactericida e modeladora do sistema imunitário. São diversas as situações clínicas em que se justifica a ventilação com ON no entanto, é possível estabelecer um factor comum entre elas : um quadro de Hipertensão Pulmonar. Na UCINP do Hospital Maria pia, foi iniciada a ventilação com ON no ano de 2000 e desde esta data foram já ventilados seis doentes com este gás, tendo sido obtidos resultados francamente satisfatórios.Nitroterapy was identified in 1987 as a way of treatment. In this year Nitric Oxide (NO) was divulged as a relaxation factor of the endothelium, with an important action on regulation of vascular tonus, plaquetary function, bactericide action and modeller of immunity system. Nitric Oxide is used especially in Pulmonary Hypertension. Since 2000, in the Intensive Care Unity of Maria Pia Hospital, six patients were ventilated using NO with good results

Avaliação da eficiência agronômica dos fungicidas no controle da ferrugem asiática na cultura da soja.

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On quasi-Jacobi and Jacobi-quasi bialgebroids

We study quasi-Jacobi and Jacobi-quasi bialgebroids and their relationships with twisted Jacobi and quasi Jacobi manifolds. We show that we can construct quasi-Lie bialgebroids from quasi-Jacobi bialgebroids, and conversely, and also that the structures induced on their base manifolds are related via a quasi Poissonization

Avaliação da reação de resistência à ferrugem da folha e do colmo à campo no germoplasma de azevém da Embrapa, safra 2006.

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