Magnetic Properties of the RAuBi2 (R = Ce, Pr, Nd, Gd, Sm) Series of Intermetallic Compounds

AbstractIn this work we report the physical properties of the series of intermetallic compounds RAuBi2 (R = Ce, Pr, Nd, Gd, Sm) studied by means of x-ray powder diffraction, magnetic susceptibility, heat capacity and electrical resistivity measurements. These compounds were grown using the metallic Bi self-flux technique and they crystallize in a tetragonal ZrCuSi2 (P4/nmm) structure. Our RAuBi2 single crystals show an antiferromagnetic ordering TN ≥ 2.3K for all measured compounds. The values of TN show a dramatic breakdown of the De Gennes factor along this series

Predicting future cancer burden in the United States by artificial neural networks

Aims: To capture the complex relationships between risk factors and cancer incidences in the US and predict future cancer burden. Materials & methods: Two artificial neural network (ANN) algorithms were adopted: a multilayer feed-forward network (MLFFNN) and a nonlinear autoregressive network with eXogenous inputs (NARX). Data on the incidence of the four most common tumors (breast, colorectal, lung and prostate) from 1992 to 2016 (available from National Cancer Institute online datasets) were used for training and validation, and data until 2050 were predicted. Results: The rapid decreasing trend of prostate cancer incidence started in 2010 will continue until 2018–2019; it will then slow down and reach a plateau after 2050, with several differences among ethnicities. The incidence of breast cancer will reach a plateau in 2030, whereas colorectal cancer incidence will reach a minimum value of 35 per 100,000 in 2030. As for lung cancer, the incidence will decrease from 50 per 100,000 (2017) to 31 per 100,000 in 2030 and 26 per 100,000 in 2050. Conclusion: This up-to-date prediction of cancer burden in the US could be a crucial resource for planning and evaluation of cancer-control programs

Possible Unconventional Superconductivity In Substituted Bafe 2 As 2 Revealed By Magnetic Pair-breaking Studies

The possible existence of a sign-changing gap symmetry in BaFe 2 As 2 -derived superconductors (SC) has been an exciting topic of research in the last few years. To further investigate this subject we combine Electron Spin Resonance (ESR) and pressure-dependent transport measurements to investigate magnetic pair-breaking effects on BaFe 1.9 M 0.1 As 2 (M = Mn, Co, Cu, and Ni) single crystals. An ESR signal, indicative of the presence of localized magnetic moments, is observed only for M = Cu and Mn compounds, which display very low SC transition temperature (T c) and no SC, respectively. From the ESR analysis assuming the absence of bottleneck effects, the microscopic parameters are extracted to show that this reduction of T c cannot be accounted by the Abrikosov-Gorkov pair-breaking expression for a sign-preserving gap function. 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ASPECTOS TEÓRICOS DOS CUIDADOS PRIMARIOS DE SAÚDE

A autora apresenta em linhas gerais a fundamentação teórica dos cuidados primários de saúde. Destaca alguns encontros internacionais e nacionais que recomendam a extensão das ações de saúde à população. Delinea também, à nova proposta de reordenação e expansão do sistema de serviços de saúde. Por último, cita algumas estratégias operativas visando a extensão da cobertura à população.The author presents a article of the foundations of primary health care. She refers to some international and national meetings that recommend the extension of health care to the whole population; she also designs the new proposal for reorganization and extension of the Health Service System and describes some operative strategies to accomplish such extension