Zonemamento agroclimático em Rondônia para sistema de Integração Lavoura-Pecuária, considerando as espécies vegetais do gênero Brachiaria e milho e soja / Agroclimatic zoning in Rondônia for Crop-Livestock Integration system, considering vegetable species of the genus Brachiaria and corn and soybean

Um zoneamento agroclimático viabiliza sistemas de cultivo agrícolas naquilo que esses consideram de maior importância econômica. Desta forma este trabalho realizou um zoneamento agroclimático para sistema de Integração Lavoura-Pecuária (ILP) em Rondônia, Brasil considerando-se a espécie vegetal forrageira do gênero Brachiaria, e produtoras de grãos, sendo milho e soja. As etapas metodológicas para elaboração do zoneamento agroclimático para o estado de Rondônia (região Norte) constituíram-se da delimitação da precipitação acumulada entre os meses de outubro e abril, sendo média para o período de 1977 a 2006, bem como da declividade das áreas e classes de solo. Fez-se necessário a conversão de dados vetoriais em formato matricial (raster) para desenvolvimento das operações algébricas (reclassificações) de mapas com o aplicativo computacional ArcMap10.5. Dados de temperaturas média, máxima e mínima não foram considerados no presente trabalho, uma vez que são escassos para Rondônia, e que sua amplitude média anual da temperatura do ar situa-se entre 22 a 26ºC, o que seria adequado à maioria das culturas integrantes do sistema Lavoura-Pecuária. A altitude também não foi considerada no referido zoneamento agrícola, devido aos valores de altitude terem pouca variação (abaixo de 380 m) no estado de Rondônia. A partir das imagens reclassificadas e rasterizadas de precipitação,declividade e classe de solos criadas, por meio da função combine do ArcMap criou-se, o mapa de zoneamento agroclimático rasterizado, e que foi novamente vetorizado. O trabalho permitiu a criação de um zoneamento agroclimático para sistema de ILP considerando o uso da espécie vegetal forrageira do gênero Brachiaria e das espécies vegetais produtoras de grãos, sendo milho e soja no estado de Rondônia, fazendo-se uso da precipitação, declividade das áreas e classes de solo

Mechanistic Insights into the Anti-angiogenic Activity of Trypanosoma cruzi Protein 21 and its Potential Impact on the Onset of Chagasic Cardiomyopathy

Chronic chagasic cardiomyopathy (CCC) is arguably the most important form of the Chagas Disease, caused by the intracellular protozoan Trypanosoma cruziit is estimated that 10-30% of chronic patients develop this clinical manifestation. The most common and severe form of CCC can be related to ventricular abnormalities, such as heart failure, arrhythmias, heart blocks, thromboembolic events and sudden death. Therefore, in this study, we proposed to evaluate the anti-angiogenic activity of a recombinant protein from T. cruzi named P21 (rP21) and the potential impact of the native protein on CCC. Our data suggest that the anti-angiogenic activity of rP21 depends on the protein's direct interaction with the CXCR4 receptor. This capacity is likely related to the modulation of the expression of actin and angiogenesis-associated genes. Thus, our results indicate that T. cruzi P21 is an attractive target for the development of innovative therapeutic agents against CCC.Univ Fed Sao Paulo, Escola Paulista Med, Departamento Microbiol Imunol Parasitol, BR-05508 Sao Paulo, SP, BrazilUniv Fed Uberlandia, Inst Ciencias Biomed, Dept Imunol, Lab Tripanosomatideos, Uberlandia, MG, BrazilUniv Fed Uberlandia, Inst Genet & Bioquim, Lab Bioquim & Toxinas Animais, Uberlandia, MG, BrazilCeTICS, Inst Butantan, Sao Paulo, BrazilUniv Fed Uberlandia, Fac Med, Centro Referencia Nacl Dermatol Sanitaria Hanseni, Lab Patol Mol & Biotecnol, Uberlandia, MG, BrazilUniv Fed Uberlandia, Inst Ciencias Biomed, Dept Immunol, Lab Osteoimunol & Imunol Tumores, Uberlandia, MG, BrazilUniv Fed Sao Paulo, Escola Paulista Med, Departamento Microbiol Imunol Parasitol, BR-05508 Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Escola Paulista Med, Departamento Microbiol Imunol Parasitol, BR-05508 Sao Paulo, SP, BrazilWeb of Scienc

Qualidade Microbiológica de Águas de Poços no Perímetro Urbano de Confresa-MT, Brasil

O presente trabalho teve por objetivo avaliar a qualidade microbiológica de águas de poços no perímetro urbano de Confresa-MT, Brasil. No período de abril a junho de 2019 foram coletadas amostras de água de 28 poços residenciais sem outorgas de captação, sendo 24 com profundidade média de 8,0 a 10,0 m, apenas manilhados partir da sua entrada, e 4 artesianos com aproximadamente 40,0 m. Nas amostras de água determinaram-se coliformes totais e fecais e Escherichia coli. Os dados foram espacializados, com intuito de discutir a qualidade das águas provenientes dos poços do perímetro urbano de Confresa. A água captada de poços simples e artesianos no perímetro urbano de Confresa-MT teve características químicas aceitáveis porém, torna-se não potável devido a presença de coliformes fecais e E. coli

Geotechnology Applied to Analysis of Vegetation Dynamics and Occurrence of Forest Fires on Indigenous Lands in Cerrado-Amazonia Ecotone

The Cerrado-Amazonia Ecotone is one of the largest ecosystems in Brazil and is internationally considered a biodiversity hotspot. The occurrence of fires is common in these areas, directly affecting biomass losses and the reduction of vegetative vigor of forest typologies. Information obtained through remote sensing and geoprocessing can assist in the evaluation of vegetation behavior and its relation to the occurrence of forest fires. In this context, the objective of the present study was to analyze temporal vegetation dynamics, as well as their relationship with rainfall and fire occurrence on Indigenous lands, located in the Cerrado-Amazonia Ecotone of Mato Grosso state, Brazil. Normalized Difference Vegetation Index (NDVI) images of the MOD13Q1 MODIS product and burnt area of the MCD45A1 MODIS product, and rainfall images from the Tropical Rainfall Measuring Mission (TRMM) sensor were used. The period analyzed was from 2007 to 2016. After pre-processing the NDVI, TRMM and burnt area images, correlation analyses were performed between the rainfall, vegetation index and burnt area images, considering different lags (−3 to 3), to obtain the best response time for the variables. The analyses of inter-annual vegetation index trends were carried out following Mann–Kendall monotonic trend and seasonal trend analysis methodologies. Significant correlations were observed between NDVI and rainfall (R = 0.84), in grass regions and between NDVI and burnt area (R = −0.74). The Mann–Kendall monotonic trend indicates vegetation index stability with positive variations in grass regions. The analysis of seasonal trends identified different vegetation responses, with this biome presenting a diverse phytophysiognomy and seasonal vegetation with different phases for amplitudes. This variation is evidenced by the various phytophysiognomies and their responses in relation to biomass gains and losses. The correlation and regression of the NDVI and rainfall in the vegetation type of grass areas show that the burnt area tends to increase with the reduction of NDVI. Finally, no defined pattern of vegetation cycles or phases was observed in terms of seasonality and the proposed methodology can be adapted to other world biomes

Geotechnology Applied to Analysis of Vegetation Dynamics and Occurrence of Forest Fires on Indigenous Lands in Cerrado-Amazonia Ecotone

The Cerrado-Amazonia Ecotone is one of the largest ecosystems in Brazil and is internationally considered a biodiversity hotspot. The occurrence of fires is common in these areas, directly affecting biomass losses and the reduction of vegetative vigor of forest typologies. Information obtained through remote sensing and geoprocessing can assist in the evaluation of vegetation behavior and its relation to the occurrence of forest fires. In this context, the objective of the present study was to analyze temporal vegetation dynamics, as well as their relationship with rainfall and fire occurrence on Indigenous lands, located in the Cerrado-Amazonia Ecotone of Mato Grosso state, Brazil. Normalized Difference Vegetation Index (NDVI) images of the MOD13Q1 MODIS product and burnt area of the MCD45A1 MODIS product, and rainfall images from the Tropical Rainfall Measuring Mission (TRMM) sensor were used. The period analyzed was from 2007 to 2016. After pre-processing the NDVI, TRMM and burnt area images, correlation analyses were performed between the rainfall, vegetation index and burnt area images, considering different lags (−3 to 3), to obtain the best response time for the variables. The analyses of inter-annual vegetation index trends were carried out following Mann–Kendall monotonic trend and seasonal trend analysis methodologies. Significant correlations were observed between NDVI and rainfall (R = 0.84), in grass regions and between NDVI and burnt area (R = −0.74). The Mann–Kendall monotonic trend indicates vegetation index stability with positive variations in grass regions. The analysis of seasonal trends identified different vegetation responses, with this biome presenting a diverse phytophysiognomy and seasonal vegetation with different phases for amplitudes. This variation is evidenced by the various phytophysiognomies and their responses in relation to biomass gains and losses. The correlation and regression of the NDVI and rainfall in the vegetation type of grass areas show that the burnt area tends to increase with the reduction of NDVI. Finally, no defined pattern of vegetation cycles or phases was observed in terms of seasonality and the proposed methodology can be adapted to other world biomes