Heavy fermion d-wave superconductivity: a X-boson approach

From an extension of the periodic Anderson model (PAM) in the $U=\infty$ limit taking into account the effect of a nearest neighbor attractive interaction between $f$-electrons, we compare the obtained superconducting phase diagram of a two dimensional d-wave superconductor with the results obtained for an isotropic s-wave superconductor employing the X-boson method.Comment: Submitted to the Proceeding of the ICM 2003-Rome. Requires elsart3.cl

Produtividade Da Crotalaria Juncea Sob Podas E Densidades De Semeadura Nos Tabuleiros Costeiros Do Piauí

The northern region of Piauí state is an important center of irrigated organic fruit farming, wherein sandy soils with low organic matter content are predominant, besides climate with high temperatures, long periods of water deficit and constant wind. Given this situation, it becomes necessary to investigate alternative management options able to meet the challenges of agricultural productivity. In this context, green manuring becomes an important practice, mainly when using fast-growing species and with great potential for biomass production. Thus, a study was carried out at Embrapa Meio-Norte to measure Crotalaria juncea biomass yield after thinning and at various sowing densities. The evaluated parameters were plant height, stem diameter, number of branches per plant, fresh and dry weight of shoots and roots. The results showed that sowing density had no influence on plant height; however, unthinned plants reached greater heights, which might have been due to reduced competition for light. Thinning had no effect on diameters of plant stem base; on the other hand, lower planting densities promoted larger diameters also due to less competition. Likewise, the number of branches per plant was not affected by thinning, being greater at lower planting densities on account of less competition. Thinned plants achieved higher averages of fresh shoot weight. Nevertheless, shoot dry biomass was greater at higher planting densities. Furthermore, both fresh and dry weight of roots were not influenced by any of the adopted treatments. © 2016, Universidade Federal Rural do Semi-Arid. All rights reserved.29487888

Inappropriate drug use and polypharmacy among older Adults of family health program

O objetivo do estudo foi descrever o perfil de utilização de medicamentos e estimar a prevalência e fatores associados à polifarmácia e ao uso de medicamentos inadequados entre idosos do Programa Saúde da Família de um Centro de Saúde de Belo Horizonte. Foram realizadas, em 2003, entrevistas domiciliares com 242 idosos. As variáveis dependentes foram a polifarmácia e o uso de medicamentos inadequados. Análises descritiva, univariada e multivariada dos dados foram conduzidas. Verificou-se elevada prevalência de polifarmácia (27,7%), automedicação (22,3%) e uso de medicamentos inadequados (33,5%). Os fatores associados à polifarmácia foram: cinco ou mais problemas de saúde, uso de medicamentos inadequados e gasto com medicamentos no último mês, enquanto os associados ao uso de medicamentos inadequados foram idade igual ou superior a 70 anos, baixa escolaridade e o uso de cinco ou mais medicamentos. A implementação de medidas voltadas para a otimização do tratamento farmacoterapêutico é fundamental.This study aimed to describe the drug use profile and to estimate the prevalence and factors associated with polypharmacy and inappropriate drug use among older people catered for by the Family Health Program of a Health Care Center in Belo Horizonte. In 2003, 242 home-based interviews were conducted with elderly. Dependent variables were polypharmacy and inappropriate drug use. Descritive, univariate and multivariate data analysis were conducted. The prevalence of polypharmacy (27,7%), self-medication (22,3%), inappropriate drug use (33,5%), and drug use in manners other than prescribed (21,9%) was verified. Factors associated with polypharmacy were: reports of five or more health problems, inappropriate drug use and expenses with drugs in previous month. Factors associated with inappropriate drug use were: age equal or higher than 70 years, unfinished primary school and use of five or more drugs. The implementation of measurements to optmize pharmacotherapeutic treatment of elderly people is fundamental.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Inappropriate drug use and polypharmacy among older Adults of family health program

O objetivo do estudo foi descrever o perfil de utilização de medicamentos e estimar a prevalência e fatores associados à polifarmácia e ao uso de medicamentos inadequados entre idosos do Programa Saúde da Família de um Centro de Saúde de Belo Horizonte. Foram realizadas, em 2003, entrevistas domiciliares com 242 idosos. As variáveis dependentes foram a polifarmácia e o uso de medicamentos inadequados. Análises descritiva, univariada e multivariada dos dados foram conduzidas. Verificou-se elevada prevalência de polifarmácia (27,7%), automedicação (22,3%) e uso de medicamentos inadequados (33,5%). Os fatores associados à polifarmácia foram: cinco ou mais problemas de saúde, uso de medicamentos inadequados e gasto com medicamentos no último mês, enquanto os associados ao uso de medicamentos inadequados foram idade igual ou superior a 70 anos, baixa escolaridade e o uso de cinco ou mais medicamentos. A implementação de medidas voltadas para a otimização do tratamento farmacoterapêutico é fundamental.This study aimed to describe the drug use profile and to estimate the prevalence and factors associated with polypharmacy and inappropriate drug use among older people catered for by the Family Health Program of a Health Care Center in Belo Horizonte. In 2003, 242 home-based interviews were conducted with elderly. Dependent variables were polypharmacy and inappropriate drug use. Descritive, univariate and multivariate data analysis were conducted. The prevalence of polypharmacy (27,7%), self-medication (22,3%), inappropriate drug use (33,5%), and drug use in manners other than prescribed (21,9%) was verified. Factors associated with polypharmacy were: reports of five or more health problems, inappropriate drug use and expenses with drugs in previous month. Factors associated with inappropriate drug use were: age equal or higher than 70 years, unfinished primary school and use of five or more drugs. The implementation of measurements to optmize pharmacotherapeutic treatment of elderly people is fundamental.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Inappropriate drug use and polypharmacy among older Adults of family health program

O objetivo do estudo foi descrever o perfil de utilização de medicamentos e estimar a prevalência e fatores associados à polifarmácia e ao uso de medicamentos inadequados entre idosos do Programa Saúde da Família de um Centro de Saúde de Belo Horizonte. Foram realizadas, em 2003, entrevistas domiciliares com 242 idosos. As variáveis dependentes foram a polifarmácia e o uso de medicamentos inadequados. Análises descritiva, univariada e multivariada dos dados foram conduzidas. Verificou-se elevada prevalência de polifarmácia (27,7%), automedicação (22,3%) e uso de medicamentos inadequados (33,5%). Os fatores associados à polifarmácia foram: cinco ou mais problemas de saúde, uso de medicamentos inadequados e gasto com medicamentos no último mês, enquanto os associados ao uso de medicamentos inadequados foram idade igual ou superior a 70 anos, baixa escolaridade e o uso de cinco ou mais medicamentos. A implementação de medidas voltadas para a otimização do tratamento farmacoterapêutico é fundamental.This study aimed to describe the drug use profile and to estimate the prevalence and factors associated with polypharmacy and inappropriate drug use among older people catered for by the Family Health Program of a Health Care Center in Belo Horizonte. In 2003, 242 home-based interviews were conducted with elderly. Dependent variables were polypharmacy and inappropriate drug use. Descritive, univariate and multivariate data analysis were conducted. The prevalence of polypharmacy (27,7%), self-medication (22,3%), inappropriate drug use (33,5%), and drug use in manners other than prescribed (21,9%) was verified. Factors associated with polypharmacy were: reports of five or more health problems, inappropriate drug use and expenses with drugs in previous month. Factors associated with inappropriate drug use were: age equal or higher than 70 years, unfinished primary school and use of five or more drugs. The implementation of measurements to optmize pharmacotherapeutic treatment of elderly people is fundamental.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Recuperação da vegetação de caatinga após impacto em Assaré - CE

Recuperação da vegetação de caatinga apósimpacto em Assaré - C

Fitofiosionomia de uma caatinga no município de Milagres, CE

Fitofiosionomia de uma caatinga nomunicípio de Milagres, C

Bedload and Suspended Sediment of a Watershed Impacted by Dams

Sediment transport relates to suspended sediment and bedload. The suspended sediment plays the most important role on the land-ocen sediment flux. On the other hand, the bedload should be considered in order to assess the impacts of dams on sediment transport and sediment yield. Recent effects of dam construction have been widely reported. The sediment load has been reduced by more than 75% for major rives, such as Nilo, Orange, Volta, Indus, Ebro, Kizil Irmark, Colorado, and Rio Grande and more than 40% of its lux is trapped within large dams. In addition, the multiple trapping through sequential dams has impacted the sediment transfer from terrestrial to coastal zone, triggering the coastal erosion. In terms of sediment retention and transport, China stands out the most impacted country by dams, followed by United States, and continents such as Europe, Africa, and South America. Based on the foregoing, the impact of dams on sediment transport and yield of an important Brazilian watershed with multiple dams will be the focus of this chapter. Thus, a three years field sampling (2009-2011) was carried out to measure the sediment yield of Capibaribe Watershed, and also its contribution to coastal erosion. The ratio between QB and SSQ ranged from 0.12% to 27.3% with 76% of all values lower than 5%. Usually, the bedload transport rate of a river is about 5–25% of the suspended sediment transport. This ranging sheds light on the lack of bedload reaching the coastal zone and it is likely one of the reasons to yield coastal erosion. The low rates can be attributed to the presence of dams which have been admitted to have a strong effect on sediment transport. The sediment yield was equal to 3.69, 4.36, and 6.7 t km-2 ano-1 in 2009, 2010, and 2011, respectively. In comparison with bedload yield, the suspended sediment yield was higher than 95% for all studied years. Therefore, the limited bedload supply – mainly responsible for construction of coastal landform – is likely contributing to the coastal erosion along part of the northeast region, Brazil. The multiple dams along the Capibaribe River watershed produce a deficit in sediment flux to coastal zone of Pernambuco State, Brazil, which relies on the low ratios between bedload and suspended sediment. As a result, it generates energy to coastal erosion of the Brazilian northeast

Deletion of kinin B2 receptor alters muscle metabolism and exercise performance

Metabolic syndrome is a cluster of metabolic risk factors such as obesity, diabetes and cardiovascular diseases. Mitochondria is the main site of ATP production and its dysfunction leads to decreased oxidative phosphorylation, resulting in lipid accumulation and insulin resistance. Our group has demonstrated that kinins can modulate glucose and lipid metabolism as well as skeletal muscle mass. By using B2 receptor knockout mice (B2R-/-) we investigated whether kinin action affects weight gain and physical performance of the animals. Our results show that B2R-/- mice are resistant to high fat diet-induced obesity, have higher glucose tolerance as well as increased mitochondrial mass. These features are accompanied by higher energy expenditure and a lower feed efficiency associated with an increase in the proportion of type I fibers and intermediary fibers characterized by higher mitochondrial content and increased expression of genes related to oxidative metabolism. Additionally, the increased percentage of oxidative skeletal muscle fibers and mitochondrial apparatus in B2R-/- mice is coupled with a higher aerobic exercise performance. Taken together, our data give support to the involvement of kinins in skeletal muscle fiber type distribution and muscle metabolism, which ultimately protects against fat-induced obesity and improves aerobic exercise performance

Diabetes as an independent predictor of high atherosclerotic burden assessed by coronary computed tomography angiography: The coronary artery disease equivalent revisited

(1) To study the prevalence and severity of coronary artery disease (CAD) in diabetic patients. (2) To provide a detailed characterization of the coronary atherosclerotic burden, including the localization, degree of stenosis and plaque composition by coronary computed tomography angiography (CCTA). Single center prospective registry including a total of 581 consecutive stable patients (April 2011-March 2012) undergoing CCTA (Dual-source CT) for the evaluation of suspected CAD without previous myocardial infarction or revascularization procedures. Different coronary plaque burden indexes and plaque type and distribution patterns were compared between patients with (n = 85) and without diabetes (n = 496). The prevalence of CAD (any plaque; 74.1 vs. 56 %; p = 0.002) and obstructive CAD (≥50 % stenosis; 31.8 vs. 10.3 %; p<0.001) were significantly higher in diabetic patients. The remaining coronary atherosclerotic burden indexes evaluated (plaque in LM-3v-2v with prox. LAD; SIS; SSS; CT-LeSc) were also significantly higher in diabetic patients. In the per segment analysis, diabetics had a higher percentage of segments with plaque in every vessel (2.6/13.1/7.5/10.5 % for diabetics vs. 1.4/7.1/3.3/4.4 % for nondiabetics for LM, LAD, LCx, RCA respectively; p<0.001 for all) and of both calcified (19.3 vs. 9.2 %, p<0.001) and noncalcified or mixed types (14.4 vs. 7.0 %; p<0.001); the ratio of proximal-to-distal relative plaque distribution (calculated as LM/proximal vs. mid/distal/branches) was lower for diabetics (0.75 vs. 1.04; p = 0.009). Diabetes was an independent predictor of CAD and was also associated with more advanced CAD, evaluated by indexes of coronary atherosclerotic burden. Diabetics had a significantly higher prevalence of plaques in every anatomical subset and for the different plaque composition. In this report, the relative geographic distribution of the plaques within each subgroup, favored a more mid-to-distal localization in the diabetic patients