70 research outputs found
Dinâmica do uso e cobertura da terra em Projeto de Desenvolvimento Sustentável na região da rodovia Transamazônica, Pará.
A regiĂŁo da rodovia TransamazĂ´nica, no estado do Pará, constitui uma das áreas crĂticas de desflorestamento na AmazĂ´nia, visto as transformações socioeconĂ´micas que tem atravessado. Este trabalho analisa mudanças espaço-temporais do uso da terra e seus impactos na cobertura vegetal no Projeto de Desenvolvimento Sustentável Virola-Jatobá, Anapu, Pará, no perĂodo de 1984 a 2015. Como suporte principal destas análises, foram utilizadas imagens Landsat, processadas e analisadas a partir da plataforma Spring. Nos primeiros anos de análise, registrou-se taxas de desflorestamento muito modestas, sĂł atingindo um incremento mais expressivos sete anos apĂłs a criação do PDS, mas, mesmo assim, em um patamar muito baixo. Como reflexo, a paisagem desta área Ă© dominada por áreas florestais, sendo as classes de uso da terra associadas principalmente Ă s pastagens, já que as áreas agrĂcolas sĂŁo muito modestas. Em geral, as áreas florestais apresentaram altas taxas de estabilidade. Dentre as classes de uso da terra, as pastagens apresentaram taxas de estabilidade expressivas, apesar de a classe Pasto Sujo ter registrado certa dinamicidade
Relações entre a paisagem e a dinâmica de uso da terra no municĂpio de Paragominas-PA. Uso de produtos SRTM e dados do Terraclass no mapeamento, distribuição e conversões entre sistemas de pecuária e agricultura anual.
This paper presents the preliminary results of the Environmental Monitoring by Satellites Project of the Amazon Biome, subproject 1 - Mapping of land use and cover in the Legal Amazon, through the field mission in the Eastern Amazon, in the state of Pará, during the period From May 23 to 25, 2016 in Paragominas-PA. Land use classes and validation of the past mapping of deforestation were recognized through mappings for the years 2004, 2008, 2010, 2012 and 2014, from which the land use dynamics were obtained, considering the annual agriculture classes And productive pasture, also referred to as clean pasture, degraded pastures, which included the regeneration classes with pasture, dirty pasture and exposed soil, as well as SRTM sensor products, through which a map of landscape compartments was produced, which allowed mapping The distribution of said land use classes in each of the four landscape units found in the municipality of Paragominas. The results show that there is a predominance of pastures in the lower areas that contain higher drainage densities and water courses that provide watering for livestock, while in the plateaus, where only the dry springs and gaps and flat relief are located in the larger ones altitudes, areas of agriculture predominate
Shared Decision Making Tools for People Facing Stroke Prevention Strategies in Atrial Fibrillation: A Systematic Review and Environmental Scan.
OBJECTIVE: Shared decision making (SDM) tools can help implement guideline recommendations for patients with atrial fibrillation (AF) considering stroke prevention strategies. We sought to characterize all available SDM tools for this purpose and examine their quality and clinical impact. METHODS: We searched through multiple bibliographic databases, social media, and an SDM tool repository from inception to May 2020 and contacted authors of identified SDM tools. Eligible tools had to offer information about warfarin and ≥1 direct oral anticoagulant. We extracted tool characteristics, assessed their adherence to the International Patient Decision Aids Standards, and obtained information about their efficacy in promoting SDM. RESULTS: We found 14 SDM tools. Most tools provided up-to-date information about the options, but very few included practical considerations (e.g., out-of-pocket cost). Five of these SDM tools, all used by patients prior to the encounter, were tested in trials at high risk of bias and were found to produce small improvements in patient knowledge and reductions in decisional conflict. CONCLUSION: Several SDM tools for stroke prevention in AF are available, but whether they promote high-quality SDM is yet to be known. The implementation of guidelines for SDM in this context requires user-centered development and evaluation of SDM tools that can effectively promote high-quality SDM and improve stroke prevention in patients with AF
Legionella pneumophila Secretes a Mitochondrial Carrier Protein during Infection
The Mitochondrial Carrier Family (MCF) is a signature group of integral membrane proteins that transport metabolites across the mitochondrial inner membrane in eukaryotes. MCF proteins are characterized by six transmembrane segments that assemble to form a highly-selective channel for metabolite transport. We discovered a novel MCF member, termed Legionella nucleotide carrier Protein (LncP), encoded in the genome of Legionella pneumophila, the causative agent of Legionnaire's disease. LncP was secreted via the bacterial Dot/Icm type IV secretion system into macrophages and assembled in the mitochondrial inner membrane. In a yeast cellular system, LncP induced a dominant-negative phenotype that was rescued by deleting an endogenous ATP carrier. Substrate transport studies on purified LncP reconstituted in liposomes revealed that it catalyzes unidirectional transport and exchange of ATP transport across membranes, thereby supporting a role for LncP as an ATP transporter. A hidden Markov model revealed further MCF proteins in the intracellular pathogens, Legionella longbeachae and Neorickettsia sennetsu, thereby challenging the notion that MCF proteins exist exclusively in eukaryotic organisms
Immunological and non-immunological mechanisms of allergic diseases in the elderly: biological and clinical characteristics
Desafios polĂticos para a consolidação do Sistema Ăšnico de SaĂşde: uma abordagem histĂłrica
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