Delineamento de unidades de gerenciamento diferenciado com o uso de condutividade elétrica e atributos do solo por meio de técnicas de lógica fuzzy

The design of site-specific management zones that can successfully define uniform regions of soil fertility attributes that are of importance to crop growth is one of the most challenging steps in precision agriculture. One important method of so proceeding is based solely on crop yield stability using information from yield maps; however, it is possible to accomplish this using soil information. In this study the soil was sampled for electrical conductivity and eleven other soil properties, aiming to define uniform site-specific management zones in relation to these variables. Principal component analysis was used to group variables and fuzzy logic classification was used for clustering the transformed variables. The importance of electrical conductivity in this process was evaluated based on its correlation with soil fertility and physical attributes. The results confirmed the utility of electrical conductivity in the definition of management zones and the feasibility of the proposed method.O delineamento de unidades de gerenciamento diferenciado, que pode determinar com sucesso regiões uniformes em termos de atributos da fertilidade dos solos que são de importância para o desenvolvimento das culturas, é uma das mais desafiadoras etapas da agricultura de precisão. Um método destacado consiste na utilização da informação associada à estabilidade da produtividade das culturas, contida nos mapas de produtividade; no entanto é possível se executar esse delineamento a partir de informações do solo. Nesse estudo o solo foi amostrado para condutividade elétrica e onze outras propriedades, buscando definir unidades de gerenciamento com uniformidade nessas propriedades. Análise de componentes principais foi utilizada para agrupar variáveis e lógica fuzzy foi utilizada para classificar as variáveis transformadas. A importância da condutividade elétrica nesse processo foi avaliada assim como as suas correlações com as propriedades físicas e químicas do solo. Confirmou-se a utilidade da condutividade elétrica na delimitação de unidades de gerenciamento diferenciado e a exeqüibilidade do método de delimitação proposto

O ensino superior nos territórios ocupados da Palestina.

O presente artigo é um documento com características essencialmente de informação sobre uma região singular do mundo - a Palestina. Mais especificamente, os Territórios Ocupados por Israel (excluindo os Montes Golan, uma parcela do território nacional sírio), frequentemente apresentados de forma parcial e, portanto, inquinada

Characterization of Buriti (Mauritia flexuosa) Foam for Thermal Insulation and Sound Absorption Applications in Buildings

Exploring new construction materials with low environmental impact leads to innovation in buildings and also to the expansion of environmental sustainability in the construction industry. In this perspective, the thermal insulation and the sound absorption performances of Buriti (Mauritia flexuosa) foam were analyzed for potential application in buildings. This material is of plant origin, it is natural, renewable, abundant, and has a low environmental impact. In this research, characterizations were made by scanning electron microscopy (SEM), apparent density, thermogravimetry (TGA and DTG), thermal conductivity, and sound absorption. The SEM analysis revealed a predominantly porous, small, and closed-cell morphology in the vegetable foam. Due to its porosity and lightness, the material has an apparent density similar to other thermal insulating and sound-absorbing materials used commercially. The evaluation of thermogravimetric (TGA/DTG) results demonstrated thermal stability at temperatures that attest to the use of Buriti foam as a building material. Based on the thermal conductivity test, the Buriti foam was characterized as an insulating material comparable to conventional thermal insulation materials and in the same range as other existing thermal insulators of plant origin. Concerning sound absorption, the Buriti foam presented a low performance in the analyzed frequency range, mainly attributed to the absence of open porosity in the material. Therefore, understanding the sound absorption mechanisms of Buriti foam requires further studies exploring additional ways of processing the material

Right heart overload – possible long-term sequelae of Covid-19: a narrative review

The United Nations announced the COVID-19 Pandemic in March 2019, and since then, many efforts have been made to understand better the multiple consequences of the virus on one's health. Notably, such viral infection leads to an increase in the formation of thrombi and microthrombi. However, mechanisms are not precise yet, neither are these complication consequences and management. It is essential to acknowledge these aspects of the disease, so patients receive better health care when dealing with COVID-19. This article's extensive search involved PubMed, SCOPUS, Cochrane, and Google Scholar databases; authors used keywords to find relevant studies on the subject. SARS-CoV2 creates a pro-thrombotic state through direct endothelial damage and a cytokine storm, affecting the lung, among other organs, leading to hypoxia and a rise in vascular resistance. Increased vascular resistance makes patients prone to cardiac stress, with a known association with right heart failure, among other insults to the heart. This condition affects both outpatients and inpatients, hypertension being a significant risk factor. The cardiac damage can be observed by cardiac injury biomarkers, imaging, and heart failure symptoms. Considering the massive number of infected during the pandemic, we suggest that right heart failure secondary to increased vascular resistance in the COVID/post-COVID state presents as a long-term sequel of the infection. Moreover, we believe it deserves attention so that patients may receive early and adequate health care

Whole-genome sequencing of 1,171 elderly admixed individuals from Brazil

As whole-genome sequencing (WGS) becomes the gold standard tool for studying population genomics and medical applications, data on diverse non-European and admixed individuals are still scarce. Here, we present a high-coverage WGS dataset of 1,171 highly admixed elderly Brazilians from a census-based cohort, providing over 76 million variants, of which ~2 million are absent from large public databases. WGS enables identification of ~2,000 previously undescribed mobile element insertions without previous description, nearly 5 Mb of genomic segments absent from the human genome reference, and over 140 alleles from HLA genes absent from public resources. We reclassify and curate pathogenicity assertions for nearly four hundred variants in genes associated with dominantly-inherited Mendelian disorders and calculate the incidence for selected recessive disorders, demonstrating the clinical usefulness of the present study. Finally, we observe that whole-genome and HLA imputation could be significantly improved compared to available datasets since rare variation represents the largest proportion of input from WGS. These results demonstrate that even smaller sample sizes of underrepresented populations bring relevant data for genomic studies, especially when exploring analyses allowed only by WGS

Doarti project : development of technological solution to potentialize the donation process in DF

O DOARTI surgiu no contexto de pandemia da COVID-19. Com a necessidade de isolamento social, por um lado muitas pessoas e famílias tiveram sua renda impactada. Por outro lado e, pelo mesmo motivo, Entidades Filantrópicas/Beneficentes tiveram uma queda abrupta em suas doações. Além disso, a pandemia fez surgir vários projetos visando prover material de apoio às pessoas diretamente relacionadas ao combate da COVID-19, como profissionais de saúde e de segurança pública

A relação dos fármacos agonistas de receptores GLP-1 e a proteção de doença renal para pacientes com Diabetes Mellitus

A diabetes mellitus compreende a incapacidade do organismo de desempenhar a função fisiológica da insulina, ocasionando uma grande carga de doenças, incluindo doença renal ou renal crônica e cardiovasculares. Os agonistas do receptor de GLP-1 são empregados em pacientes com diabetes tipo 2 como terapias de redução da glicose diversos à saúde destes pacientes. O objetivo deste estudo foi analisar a forma de ação dos agonistas de receptores GLP-1 como um fator de proteção à patologia renal crônica, em indivíduos portadores de diabetes mellitus do tipo 2, por meio de uma revisão bibliográfica sistemática. Os dados publicados demonstram que que agonistas do receptor GLP-1 reduzem a morte e incidência de doença renal terminal ou de insuficiência renal. Adicionalmente estes fármacos podem bloquear os mecanismos envolvidos em doenças renais, além de amenizar o estresse oxidativo e apoptose celular no rim. As terapias utilizadas com o uso de agonistas GLP-1 têm se mostrado agentes redutores da glicose e eficazes para pacientes com diabetes mellitus tipo 2, sendo recomendadas por instituições americanas e européias