Desertification climatic susceptibility to the Center-North region of Brazilian Semi-Arid.

Desertification process is a phenomenon of high environmental and social complexity because it embraces a significant number of indicators and variables that inter relate and that complement the comprehension of this process. One of the most useful and applied ways of the study of desertification verification is through the calculation o f the Aridity Index ( A I ). This way, this present study uses that methodol ogy to verify the situation of AI in Center - North region of Brazilian Semi - Arid. The aim was to investigate the variety of AI and its classifications during the period between 1961 and 2015, using temporal series of 30 years, expressed in the time interval of 2005, 2010 and 2015. It was possible to observe that therefore some changes in AI in many locations, where quantitative changes happened in the area, increasing mainly to the conditions of aridity aggravation, there was not the meaningful occurrence of alteration in the Desertification Tendency classification

Mapeamento de pastagens por meio da classificação da fusão de imagens Landsat-8/OLI e MODIS no município de São Gabriel do Oeste - MS.

Resumo. O sensoriamento remoto mostra-se eficiente no mapeamento de grandes áreas geográficas, executado a partir de imagens orbitais. A alta resolução espacial presente em sensores tem permitido o mapeamento detalhado da superfície terrestre, porém a resolução temporal também se mostra importante, devido a constante mudança que ocorre nos ecossistemas. Desse modo os algoritmos de predição se mostram de grande valia, uma vez que são capazes de unir a alta resolução espacial de um sensor a alta resolução temporal de outro. O objetivo deste trabalho foi realizar o mapeamento das áreas de pastagem presentes na extensão do município de São Gabriel do Oeste - MS, bem como avaliar o desempenho de diferentes algoritmos de classificação em diferentes séries temporais, sendo uma composta apenas de imagens Landsat e outra composta de imagens geradas pelo algoritmo de predição STARFM (Spatial and Temporal Adaptive Reflectance Fusion Model). Sendo que o algoritmo Random Forest, na série temporal composta pelas imagens geradas pelo algoritmo STARFM e com a adição de métricas fenológicas apresentou as melhores acurácias, obtendo índice Kappa superior a 0,85 e exatidão global superior a 92,5%.Geopantanal 2018

Beyond the genetics of HDL:why is HDL cholesterol inversely related to cardiovascular disease?

There is unequivocal evidence that high-density lipoprotein (HDL) cholesterol levels in plasma are inversely associated with the risk of cardiovascular disease (CVD). Studies of families with inherited HDL disorders and genetic association studies in general (and patient) population samples have identified a large number of factors that control HDL cholesterol levels. However, they have not resolved why HDL cholesterol and CVD are inversely related. A growing body of evidence from nongenetic studies shows that HDL in patients at increased risk of CVD has lost its protective properties and that increasing the cholesterol content of HDL does not result in the desired effects. Hopefully, these insights can help improve strategies to successfully intervene in HDL metabolism. It is clear that there is a need to revisit the HDL hypothesis in an unbiased manner. True insights into the molecular mechanisms that regulate plasma HDL cholesterol and triglycerides or control HDL function could provide the handholds that are needed to develop treatment for, e.g., type 2 diabetes and the metabolic syndrome. Especially genome-wide association studies have provided many candidate genes for such studies. In this review we have tried to cover the main molecular studies that have been produced over the past few years. It is clear that we are only at the very start of understanding how the newly identified factors may control HDL metabolism. In addition, the most recent findings underscore the intricate relations between HDL, triglyceride, and glucose metabolism indicating that these parameters need to be studied simultaneously