Direct current voltage appears across and in plane of a ferromagnetic multilayer experiencing ferromagnetic resonance. We have investigated the dc voltage simultaneously generated with the excitation of the uniform mode of magnetization precession in ferromagnetic∕normal-metal∕ferromagnetic trilayers with different spacer-layer materials. The generated voltage strongly depends on the chemical nature and the thickness of the normal-metal spacer as well as on the microwave incident power. This dc voltage might be correlated with the spin-pumping effect recently predicted.

Ferromagnetic resonance has been used to study the room-temperature linewidth and frequency shift of the qϭ0 spin-wave mode in thin films of NiFe sputtered on Si͑100͒ substrates. The data on the variation of the linewidth and resonance field with film thickness are completely consistent with the extrinsic mechanism recently proposed by Arias and Mills based on momentum nonconserving two-magnon scattering off defects on the film surfaces.

The higher frequency of appropriate ICD therapy and the shorter event-free survival in ChD patients are consistent with the presence of an arrhythmogenic substrate that characterizes this cardiomyopathy.

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We present a systematic investigation of the magnetic properties of two series of polycrystalline ferromagneticantiferromagnetic bilayers (FM-AF) of Ni 81 Fe 19 (10nm)/Ir 20 Mn 80 (t AF ) grown by dc magnetron sputtering. One series was grown at an oblique angle of 50• and the other one was grown at 0• . Ferromagnetic resonance (FMR) was used to measure the exchange bias field H E , the rotatable anisotropy field H RA , and the FMR linewidth H as a function of the antiferromagnetic layer thickness t AF . Three relaxation channels due to isotropic Gilbert damping, anisotropic two-magnon scattering, and mosaicity effects are simultaneously distinguished through the angular dependence of the FMR linewidth. In the regime of small IrMn layer thicknesses, not enough to establish the exchange bias anisotropy, the FMR linewidth shows a sharp peak due to the contribution of the two-magnon scattering mechanism. The results presented here are of general importance for understanding the dynamics of magnetization in the FM-AF structures.

The objectives of this historical-social study are: to describe the circumstances that determined the participation of North American nurses in the formation of the Brazilian nurse; and analyse the process of implementing institutional rituals as a strategy of symbolic fight, to confer visibility to the nurse profession and discuss the symbolic effects of institutional rituals for the consecration of a nurse model for Brazilian society at the time. The primary sources are constituted of pertaining written and photographic documents relative to the studied theme. By reading the documentary corpus an analysis was made of the symbols that had distinguished and established the hierarchies of the actions, as well as the strategies undertaken for the North American nurses, towards implementing a new model of nurses in Brazilian society, coherent with the model of the North American schools of nursing. Institutional rituals, conducted or testified by prestigious figures of the history of Brazil and nursing, were fundamental for the construction of professional identity.

The anomalous Nernst effect in nanostructured magnetic materials is a key phenomenon to optimally control and employ the internal energy dissipated in electronic devices, being dependent on, for instance, the magnetic anisotropy of the active element. Thereby, here, we report a theoretical and experimental investigation of the magnetic properties and anomalous Nernst effect in a flexible magnetostrictive film with induced uniaxial magnetic anisotropy and under external stress. Specifically, we calculate the magnetization behavior and the thermoelectric voltage response from a theoretical approach for a planar geometry, with magnetic free energy density that takes into account the induced uniaxial and magnetoelastic anisotropy contributions. Experimentally, we verify modifications of the effective magnetic anisotropy by changing the external stress, and explore the anomalous Nernst effect, a powerful tool to investigate the magnetic properties of magnetostrictive materials. We find quantitative agreement between experiment and numerical calculations, thus elucidating the magnetic behavior and thermoelectric voltage response. Besides, we provide evidence to confirm the validity of the theoretical approach to describe the magnetic properties and anomalous Nernst effect in ferromagnetic magnetostrictive films having uniaxial magnetic anisotropy and submitted to external stress. Hence, the results place flexible magnetostrictive systems as promising candidates for active elements in functionalized touch electronic devices.

ResumoEsta revisão sistemática tem como objetivo analisar a relação entre os níveis de prática de atividades físicas e as condições socioeconômicas em adultos e idosos. Foi realizada uma busca na base de dados Pubmed e Scielo até maio de 2015, utilizando as palavras chaves: physical activity, physical exercise, sedentary lifestyle, sedentay behaviour, socioeconomic status e socioeconomic factors e seus respectivos correspondentes na língua portuguesa. Foram adotados os seguintes critérios de inclusão: a) artigos originais que mostravam de forma explícita que investigavam associações de determinantes socioeconômicos com qualquer domínio da atividade física; b) ter amostra composta por adultos e idosos, considerando como idade superior a 18 anos; c) estarem redigidos em língua inglesa ou portuguesa; d) data de publicação a partir do ano 2005. Foram adotados os seguintes critérios de exclusão: a) artigos que tinham como objetivo investigar tais associações, mas envolviam apenas grupos de pessoas com alguma síndrome e/ou doenças, b) estudos de revisão. Foram identificados 573 artigos, deste total foram analisados 43 artigos. Esta revisão identificou que a atividade física está associada aos fatores socioeconômicos, sobretudo a renda, trabalho e escolaridade. De tal modo que os participantes de menor escolaridade, menor renda e/ou pior qualificação profissional estão sujeitos aos maiores ní-veis de atividade física nos domínios do deslocamento e/ou ocupacional. Por outro lado, o grupo social de maior renda, maior escolaridade e com melhor status profissional estão mais propensos a se engajarem em atividades físicas no lazer. Palavras-chave