Proposta de um modelo matemático do consumo residêncial de energia: estudo de Cuiabá, Mato Grosso – Brasil

No momento econômico atual as empresas se diferenciam no conhecimento que detêm o quecertamente as colocam em vantagem competitiva. A desinformação ou a falsa informação pode significar perdas e até mesmo morte empresarial. Neste cenário, encontrase a gestão energética com a veracidade da fatura residencial de energia como um dos fatores determinantes do sucesso empresarial. A existência de 15% de perdas e a necessidade de competitividade das empresas justifica a propositura de pesquisas objetivando a aplicação de um modelo matemático ao consumo residencial de energia. Baseado em série históricas de seis anos, cujo período abrange desde 2001 a 2006. Para tal, realizouse análise estatística de variáveis possivelmente explicativas e se buscou modelos matemáticos com a projeção do consumo residencial de energia. Os resultados reportam a necessidade de inserção de variáveis econômicas, a existência de um abismo socioeconômico entre as residências de Cuiabá, evidenciou também a possibilidade de existência de fraudes no consumo de energia.En el momento económico actual, las empresas se diferencian por el conocimiento que tengano que ciertamente les otorgue una ventaja competitiva. La desinformación o falsa información puede significar pérdidas y hasta la muerte empresarial. En este escenario se encuentra la gestión energética con la verdad en la facturación residencial de energía como uno de los factores determinantes del éxito empresarial. La existencia del 15% de pérdidas y la necesidad de competitividad de las empresas justifica la propuesta de investigaciones validando la aplicación de un modelo matemático al consumo residencial de energía. Se basa en series históricas de seis años desde el 2001 al 2006. Para el caso, se hizo un análisis estadístico de variables posiblemente explicativas y se buscó modelos matemáticos como una proyección del consumo residencial de energía. Los resultados reportan la necesidad de insertar variables económicas, pues, la existenciade un abismo socioeconómico entre las residencias de Cuiabá, evidenció también la posibilidad de fraudes en el consumo de energía.At present time, enterprises differ from each other by the knowledge they have of their business which hives them a competitive advantage. Lack of knowledge or false information may mean losses and even entrepreneurial death. In this scenario energy management with true billing of residential energy is one of the determinant factors of the enterprise success. The existence of 15% losses and the competitive need of enterprises justify the proposal to do a research validating the application of a mathematical model to the consumption of residential energy. This model is based on historic series in a six-year period, from 2001 to 2006. To do this, I made an statistic analysis of possible explicative variables and searched for mathematic models using a projection of the residential energy consumption. The results showed the need to insert economic variables, because of the existence of a great socioeconomic gap among the Cuiabá residences, and it also showed fraud possibilities in energy consumption

EFEITO DE BORDA SOBRE O COMPONENTE ARBÓREO DE UM FRAGMENTO DO MORRO DA HARMONIA, MUNICÍPIO DE TEUTÔNIA, RIO GRANDE DO SUL, BRASIL

No Vale do Taquari, grande parte de fragmentos da Mata Atlântica estão localizados em topos de morros, montanhas e encostas. O objetivo do trabalho é comparar a riqueza e quantidade de espécies arbóreas de acordo com a área estratificada e classificada como borda, meio e interior de fragmentos da floresta. Foi realizado o levantamento florístico da vegetação arbórea em parcelas de 100 m², com o DAP (diâmetro a altura do peito), maior ou igual 15 cm. Foram selecionadas três parcelas para cada classe, totalizando, 900 m². Os resultados revelam que a riqueza de espécies aumenta linearmente na medida que o fragmento avança para o interior, porém a abundância ou densidade de indivíduos do componente arbóreos foi maior a área do meio. Nossos resultados comprovam, que a composição arbórea está relacionada a fatores ambientais físicos abióticos como humidade e temperatura e bióticos como a competição entre espécies, estes são acentuados com os efeitos de borda e o grau de intervenção humana em áreas de mata nativa.

Genetic parameters for body weight, carcass chemical composition and yield in a broiler-layer cross developed for QTL mapping

The objective of this study was to estimate genetic and phenotypic correlations of body weight at 6 weeks of age (BW6), as well as final carcass yield, and moisture, protein, fat and ash contents, using data from 3,422 F2 chickens originated from reciprocal cross between a broiler and a layer line. Variance components were estimated by the REML method, using animal models for evaluating random additive genetic and fixed contemporary group (sex, hatch and genetic group) effects. The heritability estimates (h2) for BW6, carcass yield and percentage of carcass moisture were 0.31 ± 0.07, 0.20 ± 0.05 and 0.33 ± 0.07, respectively. The h2 for the percentages of protein, fat and ash on a dry matter basis were 0.48 ± 0.09, 0.55 ± 0.10 and 0.36 ± 0.08, respectively. BW6 had a positive genetic correlation with fat percentage in the carcass, but a negative one with protein and ash contents. Carcass yield, thus, appears to have only low genetic association with carcass composition traits. The genetic correlations observed between traits, measured on a dry matter basis, indicated that selection for carcass protein content may favor higher ash content and a lower percentage of carcass fat

Pediatric tuberculosis in the metropolitan area of Rio de Janeiro

Aim: To evaluate the clinical characteristics, diagnostic approach, and treatment outcomes of tuberculosis (TB) in children living in a high-burden metropolitan area. Methods: This was a retrospective study, based on a medical chart review, involving children under 15 years old treated for TB between 2007 and 2016, in four primary health units (PHU) and three reference centers (RC) in five cities of Rio de Janeiro metropolitan area. Factors associated with TB treatment setting, microbiological diagnosis, and treatment outcomes were evaluated. Results: A total of 544 children were enrolled; 71% were treated in PHU, 36% were under 5 years old, and 72% had pulmonary TB (PTB). The HIV prevalence was 10% (31/322). Fifty-three percent had at least one microbiological test for TB, 68% of them (196/287) had TB confirmed. Among 222 children with previous TB contact, information on LTBI was available for 78 (35%), and only 17% (13/78) were treated. Extrapulmonary TB (56% vs 32%), microbiologically confirmed TB (77% vs 60%), and HIV positivity (18.5% vs 4.0%) were significantly more frequent in RC. Treatment in RC (odds ratio (OR) 3.08, 95% confidence interval (CI) 1.74–5.44) and PTB (OR 2.47, 95% CI 1.34–4.56) were independently associated with a microbiological diagnosis of TB. The treatment success rate was 85%. In the logistic regression analysis, HIV-infected children had a 2.5-fold higher risk of an unfavorable outcome (OR 2.53, 95% CI 1.0–6.38; p = 0.05). Conclusions: Opportunities for TB prevention and early TB treatment are missed due to suboptimal close contact screening. Microbiological diagnosis of TB and drug susceptibility testing in children should be made available through more sensitive and accessible tests

Diagnosis of pulmonary tuberculosis in children and adolescents: comparison of two versions of the Brazilian Ministry of Health scoring system

The aim of this study was to evaluate the concordance between two versions of the scoring system (2011 and 2019), recommended by the Brazilian Ministry of Health, for the diagnosis of pulmonary tuberculosis (PTB) in children and adolescents. A retrospective descriptive study was performed to assess the medical records of children and adolescents with PTB, in TB units from Brazilian cities located in Rio de Janeiro, Minas Gerais, and Parana States, from January 1st, 2004, to December 1st, 2018. Patients aged 0 to 18 years old with a diagnosis of PTB were included. The comparison between the two scoring systems showed a moderate concordance according to the κ coefficient value = 0.625. Fourteen patients showed a reduction in the TB score, going from 30 points in the 2011, to 25 points or less in the 2019 one. Seventy one percent of these 14 patients had radiological changes suggestive of PTB and 86% had tuberculin skin tests greater than 10 mm. The study concluded that a moderate agreement was observed between the 2011 and 2019 scoring systems, with an increase in the number of patients scoring 25 points or less in 2019, which can eventually hinder the diagnosis of PTB

Proposta de um modelo matemático do consumo residêncial de energia: estudo de Cuiabá, Mato Grosso – Brasil

At present time, enterprises differ from each other by the knowledge they have of their business which hives them a competitive advantage. Lack of knowledge or false information may mean losses and even entrepreneurial death. In this scenario energy management with true billing of residential energy is one of the determinant factors of the enterprise success. The existence of 15% losses and the competitive need of enterprises justify the proposal to do a research validating the application of a mathematical model to the consumption of residential energy. This model is based on historic series in a six-year period, from 2001 to 2006. To do this, I made an statistic analysis of possible explicative variables and searched for mathematic models using a projection of the residential energy consumption. The results showed the need to insert economic variables, because of the existence of a great socioeconomic gap among the Cuiabá residences, and it also showed fraud possibilities in energy consumption.No momento econômico atual as empresas se diferenciam no conhecimento que detêm o quecertamente as colocam em vantagem competitiva. A desinformação ou a falsa informação pode significar perdas e até mesmo morte empresarial. Neste cenário, encontrase a gestão energética com a veracidade da fatura residencial de energia como um dos fatores determinantes do sucesso empresarial. A existência de 15% de perdas e a necessidade de competitividade das empresas justifica a propositura de pesquisas objetivando a aplicação de um modelo matemático ao consumo residencial de energia. Baseado em série históricas de seis anos, cujo período abrange desde 2001 a 2006. Para tal, realizouse análise estatística de variáveis possivelmente explicativas e se buscou modelos matemáticos com a projeção do consumo residencial de energia. Os resultados reportam a necessidade de inserção de variáveis econômicas, a existência de um abismo socioeconômico entre as residências de Cuiabá, evidenciou também a possibilidade de existência de fraudes no consumo de energia.En el momento económico actual, las empresas se diferencian por el conocimiento que tengano que ciertamente les otorgue una ventaja competitiva. La desinformación o falsa información puede significar pérdidas y hasta la muerte empresarial. En este escenario se encuentra la gestión energética con la verdad en la facturación residencial de energía como uno de los factores determinantes del éxito empresarial. La existencia del 15% de pérdidas y la necesidad de competitividad de las empresas justifica la propuesta de investigaciones validando la aplicación de un modelo matemático al consumo residencial de energía. Se basa en series históricas de seis años desde el 2001 al 2006. Para el caso, se hizo un análisis estadístico de variables posiblemente explicativas y se buscó modelos matemáticos como una proyección del consumo residencial de energía. Los resultados reportan la necesidad de insertar variables económicas, pues, la existenciade un abismo socioeconómico entre las residencias de Cuiabá, evidenció también la posibilidad de fraudes en el consumo de energía