Estudo de caso 3 - estratégias de adubação no sistema soja/milho segunda safra, com ou sem braquiária como planta de cobertura em consórcio com o milho, na Fazenda Decisão, Unaí, MG.

Apresenta-se, a seguir, uma estratégia de experimentação estabelecida buscando avanços na pesquisa em condições realistas, em um sistema de produção comercial soja/milho segunda safra, com ou sem a inclusão da braquiária ruziziensis (Urochloa ruziziensis) como planta de cobertura em consórcio com o milho

Diagnostic Accuracy of High-Resolution 3D T2-SPACE in Detecting Cerebral Venous Sinus Thrombosis.

BACKGROUND AND PURPOSE Assessment of cerebral venous sinus thrombosis on MR imaging can be challenging. The aim of this study was to evaluate the diagnostic accuracy of high-resolution 3D T2 sampling perfection with application-optimized contrasts by using different flip angle evolution (SPACE) in patients with cerebral venous sinus thrombosis and to compare its performance with contrast-enhanced 3D T1-MPRAGE. MATERIALS AND METHODS We performed a blinded retrospective analysis of T2-SPACE and contrast-enhanced MPRAGE sequences from patients with cerebral venous sinus thrombosis and a control group. The results were compared with a reference standard, which was based on all available sequences and clinical history. Subanalyses were performed according to the venous segment involved and the clinical stage of the thrombus. RESULTS Sixty-three MR imaging examinations from 35 patients with cerebral venous sinus thrombosis and 51 examinations from 40 control subjects were included. The accuracy, sensitivity, and specificity calculated from the initial MR imaging examination for each patient were 100% each for T2-SPACE and 95%, 91%, and 98%, respectively, for contrast-enhanced MPRAGE. The interrater reliability was high for both sequences. In the subanalysis, the accuracy for each venous segment involved and if subdivided according to the clinical stage of thrombus was ≥95% and ≥85% for T2-SPACE and contrast-enhanced MPRAGE, respectively. CONCLUSIONS Both T2-SPACE and contrast-enhanced MPRAGE offer high accuracy for the detection and exclusion of cerebral venous sinus thrombosis; however, T2-SPACE showed a better overall performance and thus could be a useful tool if included in a multiparametric MR imaging protocol for the diagnosis of cerebral venous sinus thrombosis, especially in scenarios where gadolinium administration is contraindicated

The relationship between non-CNS tuberculosis and the increased risk of stroke among OPD and TB-DOTS center patients of DLSUMC during January 2015 : a cross-sectional study

This research was a cross-sectional type of study. Two groups were created using stratified random sampling to make sure both non-CNS tuberculosis patients and non-tuberculosis patients were well represented. Simple random sampling from each stratum was done to derive the study\u27s 310 participants. A self-administered questionnaire was utilized. Prevalence ratio was used to determine the relationship between the tuberculosis status and the risk of stroke. Chi-square was utilized to compute for the difference regarding the risk of stroke between those with and without stroke. The prevalence ratio for a high risk of a stroke was 1.45 among the tuberculosis population compared to the non-tuberculosis population. The results showed that the prevalence of a high risk for a stroke was greater in the tuberculosis population which suggested that tuberculosis had an association with a high risk for a stroke. However, the p-value found that the test was not statistically significant therefore the risk of stroke in the tuberculosis population was not statistically significant different from the risk of stroke in the group without tuberculosis

Cómo quieres que me calle...

Desde hace varias décadas se observan personas que pernoctan en plazas, autos abandonados, guardias de hospitales, debajo de puentes, estaciones de tren y distintos espacios de la vía pública. La situación de calle, ya bien sabemos, no es solo un fenómeno local y se enmarca en un proceso de exclusión social, donde la salud se va deteriorando. Un grupo de docentes y alumnos de la Facultad de Odontología de la UNLP comprometidos con la necesidad manifiesta de la comunidad y ante la necesidad de mejorar y elevar la salud de dichas personas, desarrollaran tareas sociales y comunitarias y de educación para la salud.Facultad de Odontologí

Eficiência do modelo ceres-maize na predição da produtividade de milho em áreas com presença de variabilidade espacial Ceres-Maize model efficiency in corn yield prediction within spatial variable areas

Modelos são utilizados para a simulação do crescimento de plantas como ferramentas na otimização das práticas de manejo, bem como para estimar produtividades. Com este estudo objetivou-se testar a eficiência do modelo CERES-maize na estimação da produtividade de milho, em função da variabilidade espacial presente na área. Foram instaladas no Campus da UFLA parcelas experimentais em áreas variáveis segundo o teor de saturação por bases (V%), ao ter-se mostrado decisivo nas observações realizadas. Também foram obtidos dados de temperaturas máxima e mínima, precipitação e radiação solar; dados de solo nas camadas de 0-27, 27-45, 45-68 68-80 e 80-100 cm; dados de manejo da cultura do milho, e estimados os parâmetros genéticos do híbrido utilizado. Os resultados da simulação mostraram que as produtividades foram maiores em áreas com elevada saturação por bases, coincidindo com as produtividades observadas. Melhores aproximações nas respostas estimadas ficaram evidentes quando foram utilizados os valores dos parâmetros genéticos próprios a cada parcela. Concluiu-se que o modelo CERES-maize foi capaz de estimar a tendência das diferentes produtividades observadas, em função da variabilidade espacial da saturação por bases (V%), obtendo-se simulações mais precisas ao utilizar os valores dos parâmetros genéticos próprios a cada parcela.<br>Simulation models are tools utilized for optimization of managements practices as well as to estimate crop yield. The present study aimed to test the efficiency of the CERES-maize model to simulate corn yield related to the field spatial variability. The experimental area was located at Federal University of Lavras, where experimental plots were established according to the variable areas of base saturation (V%), a parameter regarded as decisive in the observed yields. Data of maximum and minimum temperatures, rainfall and solar radiation; soil data in the 0-27, 27-45, 45-68, 68-80 and 80-100 cm layers to each experimental plot, management information of corn crop and genetic parameters of the corn hybrid, were collected. The simulation presented better results when the genetic parameters, particular to each plot, were utilized. Observed yield simulations were higher in areas of elevated base saturation. Due to that, it follows that the simulation was capable to estimate a trend of the distinguished yields as related to the spatial variables of the soil attribute (V%), obtaining more precise simulations with the use of the values of the genetic parameters estimated in each plot