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Search Results: 1 - 10 of 13302 matches for " Brito Neto "
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Modelo de classifica??o de risco de crédito de empresas
Brito, Giovani Antonio Silva;Assaf Neto, Alexandre;
Revista Contabilidade & Finan?as , 2008, DOI: 10.1590/S1519-70772008000100003
Abstract: the process of credit risk management in financial institutions has been revised in recent years. in this context, large banks have developed and implemented several new techniques for measuring borrowers credit risk. this research aims to develop a risk classification model to assess the credit risk of companies in the brazilian market. the model was built based on a sample of publicly traded companies classified as solvent or insolvent during the period from 1994 to 2004. logistic regression was used to develop the model. the independent variables of the model are financial ratios, calculated from the financial statements and used as proxies of companies economic and financial situation. the validation of the model was done using the jackknife method and a roc curve. the results of the study indicate that the risk classification model developed predicts default events one year prior to failure with good level of accuracy. the results also indicate that financial statements contain information that allow for the classification of companies as probably solvent or probably insolvent.
'Diabetology & Metabolic Syndrome: providing an open access future for diabetes research'
Daniel Giannella-Neto, Marília de Brito Gomes
Diabetology & Metabolic Syndrome , 2009, DOI: 10.1186/1758-5996-1-1
Abstract: Among the many good reasons to launch a new open access journal devoted to publishing articles in the field of diabetes research is the fact diabetes is seen as a pandemic condition of unprecedented proportions. In 2007 there were an estimated 246 million cases of diabetes worldwide, with the Western Pacific and the European regions having the highest numbers, approximately 67 and 53 million, respectively. The prevalence of diabetes is projected to rise in both developed and developing countries. In the seven regions of the International Diabetes Federation (IDF) the estimated numbers of cases will be 380 million by 2025. In addition, in many populations, diabetes is most common among the elderly but prevalence rates will significantly rise among comparatively young and productive populations in the developing world [1].Type 2 diabetes mellitus constitutes about 85% to 95% of all diabetes cases in developed countries and accounts for an even higher percentage in developing countries mostly due to increased urbanization, westernization and economic development, which predispose to obesity due to high consumption of industrialized foods and physical inactivity [2]. Moreover, because of the inefficiency and lack of professional and material resources, the public health systems in developing countries will be facing an increasing number of people with poorly controlled diabetes more predisposed to the devastating microvascular and macrovascular consequences of the disease.In addition to the increasing numbers of diabetes cases, there are many challenges to face in optimising diabetes care. Highlighting this are studies into the factors, which can help in predicting the likelihood of achieving glycaemic control across various regions of the World. The International Diabetes Management Practice Study (IDMPS) concluded that short disease duration and use of few oral antidiabetic drugs were predictive factors for achieving HbA1C <7% in 9,901 T2DM patients recruited by 937 p
A Inser??o do migrante rural no mercado de trabalho urbano no Brasil: uma análise empírica da importancia dos setores informal e formal
Ramalho, Hilton Martins de Brito;Silveira Neto, Raul da Mota;
Estudos Econ?micos (S?o Paulo) , 2012, DOI: 10.1590/S0101-41612012000400004
Abstract: this paper provides an empirical analysis of the insertion of the rural-urban migrant into the urban labor market in brazil. three different aspects are specifically considered. first, it provides evidence for the importance of human capital to the insertion of brazilian rural-urban migrants between formal and informal sector. second, it investigates if the brazilian informal sector can be considered as a transitory stage for the migrant who intends to work in the formal sector. finally, it analyses if the observed insertion of brazilian rural-urban migrant in the labor market reflects his best possible choice given expected returns to his individual characteristics. the results indicate that the migrant human capital is positively associated to the chance of being allocated to formal sector and that there are barriers to entry in some sectors. the set of evidence is also consistent with the idea that urban informal sector represent a temporary stage for the migrant who intends to work in the formal sector.
Agentes complexantes: podante, coronante e criptante classifica??o e nomenclatura
Whei, Oh Lin;Brito Neto, José Thomé Xavier de;
Química Nova , 1998, DOI: 10.1590/S0100-40421998000500015
Abstract: the scientific and practical interest in crown ethers as complexing agents for actions as well as for anions and neutral low molecular species is undeniable. new molecules with crown ether properties are constantly synthesized and new application discovered. this paper presents classification and nomenclature of the classical oligoethers (crown ethers): monocyclic coronands; oligocyclic spherical cryptands; and acyclic podands.
Preserva??o da audi??o em pacientes submetidos à cirurgia do shwannoma vestibular por acesso retrolabiríntico
Bento, Ricardo Ferreira;Brito Neto, Rubens Vuono de;
Revista Brasileira de Otorrinolaringologia , 2004, DOI: 10.1590/S0034-72992004000500006
Abstract: hearing preservation has become a goal in modern surgery for acoustic neuroma. aim: we have analyzed the post-operative hearing of patients who underwent surgery through the transmastoid retrolabyrinthine approach. study design: contenporany cohort transversal. patients and method: this study is a prospective analysis of 41 patients with small vestibular schwannoma and useful hearing operated through a transmastoid retrolabyrinthine approach between 1994 and 2004. all patients had unilateral tumors smaller than 1.5 cm. the following parameters were included in our protocol: 1-total removal of the tumor, 2- intra-operative difficulties or complications, 3-immediate post-operative complications, 4- audiologic evaluation 90 days after surgery. results: a good exposure of the internal auditory canal was possible in almost all cases. in six patients we had to change the approach to a translabyrinthine one, with total removal of the tumor in all patients. hearing was preserved in 34.1% of the cases at the same preoperative levels. conclusion: the retrolabyrinthine approach offered security to the facial nerve, no morbidity and good percentage of hearing preservation. it is also easier changeable to a translabyrinthine approach when a widely space is necessary.
Oral language of children with five years of experience using cochlear implant
RF Stuchi,LT Nascimento,MC Bevilacqua,RV Brito Neto
Pró-Fono Revista de Atualiza??o Científica , 2007, DOI: 10.1590/s0104-56872007000400015
Abstract:
Agentes complexantes: podante, coronante e criptante classifica o e nomenclatura
Whei Oh Lin,Brito Neto José Thomé Xavier de
Química Nova , 1998,
Abstract: The scientific and practical interest in crown ethers as complexing agents for actions as well as for anions and neutral low molecular species is undeniable. New molecules with crown ether properties are constantly synthesized and new application discovered. This paper presents classification and nomenclature of the classical oligoethers (crown ethers): monocyclic coronands; oligocyclic spherical cryptands; and acyclic podands.
Production of Manganese Peroxidase by Trametes villosa on Unexpensive Substrate and Its Application in the Removal of Lignin from Agricultural Wastes  [PDF]
Marília Lordêlo Cardoso Silva, Volnei Brito de Souza, Ver?nica da Silva Santos, Hélio Mitoshi Kamida, Jo?o Ronaldo T. de Vasconcellos-Neto, Aristóteles Góes-Neto, Maria Gabriela Bello Koblitz
Advances in Bioscience and Biotechnology (ABB) , 2014, DOI: 10.4236/abb.2014.514122
Abstract: Manganese peroxidase (MnP) is a ligninolytic enzyme that is involved in the removal of lignin from the cell wall of plants. This removal facilitates the access of hydrolytic enzymes to the carbohydrate polymers that are hydrolyzed to simple sugars, which allows the subsequent fermentation to obtain bioproducts, such as ethanol. In this work, response surface methodology (RSM) was employed to optimize the culture conditions on unexpensive substrate for MnP secretion by Trametes villosa. Three independent variables were evaluated (i.e., temperature, moisture content and pH). The crude extract containing MnP was used in the delignification experiment and it caused a reduction in lignin content for all residues tested: 35.05 ± 1.45 (%) for the sugar cane bagasse; 63.11 ± 0.06 (%) for the sisal fiber and 39.61 ± 0.39 (%) for the coconut shell, under the reaction conditions tested after 4 hours of fermentation. The preliminary results exhibited the potential application of this enzyme in the removal of lignin from plant residues. However, the conditions should be evaluated and optimized for each residue type.
Accuracy of genomic selection in simulated populations mimicking the extent of linkage disequilibrium in beef cattle
Fernanda V Brito, José Neto, Mehdi Sargolzaei, Jaime A Cobuci, Flavio S Schenkel
BMC Genetics , 2011, DOI: 10.1186/1471-2156-12-80
Abstract: The accuracy of DGEBV increased significantly (p < 0.05) with the increase in the number of bulls in the TS (480, 960 or 1920), trait h2 (0.10, 0.25 or 0.40) and marker densities (40 k or 800 k). Increasing the number of animals in the TS by 4-fold and using their phenotypes to estimate marker effects was not sufficient to maintain or increase the accuracy of DGEBV obtained using estimated breeding values (EBVs) when the trait h2 was lower than 0.40 for both marker densities. Comparing to expected accuracies of parent average (PA), the gains by using DGEBV would be of 27%, 13% and 10% for trait h2 equal to 0.10, 0.25 and 0.40, respectively, considering the scenario with 40 k markers and 1920 bulls in TS.As reported in dairy cattle, the size of the TS and the extent of LD have major impact on the accuracy of DGEBV. Based on the findings of this simulation study, large TS, as well as dense marker panels, aiming to increase the level of LD between markers and QTL, will likely be needed in beef cattle for successful implementation of genomic selection.Genomic selection is a method of marker-assisted selection based on LD that potentially explores all QTL in the genome [1]. The breeding value (BV) is estimated by the sum of the effects of marker alleles or haplotypes covering the entire genome and its accuracy could be as high as 0.85 [1].The BV calculated from the estimated effects of markers is often called DGEBV and the blended value between DGEBV and traditional EBV is often called Genomic Estimated Breeding Value (GEBV). The accuracy of DGEBV and GEBV depends on: 1) the level of LD between markers and QTL; 2) the number of animals in the TS; 3) the heritability of the trait and 4) the distribution of QTL effects [2].Since 2009, national evaluations of Holstein bulls are being performed in the USA and Canada based on GEBV. Before that, a comprehensive study evaluating the reliability of GEBV of many economic traits in thousands of Holstein bulls genotyped with the Il
Schwannoma vestibular: 825 casos - 25 anos de experiência
Bento, Ricardo Ferreira;Pinna, Mariana Hausen;Brito Neto, Rubens Vuono de;
International Archives of Otorhinolaryngology , 2012, DOI: 10.7162/S1809-97772012000400007
Abstract: introduction: acoustic nerve tumors have been recognized as a clinico-pathologic entity for at least 200 years, and they represent 90% of cerebellopontine angle diseases. histologically, the tumors are derived from schwann cells of the myelin sheath, with smaller tumors consisting of elongated palisade cells, while in large tumors, cystic degeneration can be found in the central areas, possibly due to deficient vascularization. we retrospectively reviewed 825 cases of vestibular schwannomas, reported between january 1984 and august 2006, in which the patients underwent surgery to remove the tumor. objective: to evaluate signs, symptoms, aspects of clinical diagnosis, including the results of audiological and imaging studies, and surgical techniques and complications. methods: a retrospective chart review. the medical records of all patients undergoing surgical treatment for schwannoma during the period indicated were reviewed. results and conclusion: hearing loss was the first symptom reported in almost all cases, and tumor size was not proportional to the impairment of the auditory threshold. the surgical techniques allowed safe preservation of facial function. in particular, the retrolabyrinthine route proved useful in small tumors, with 50% preservation of hearing.
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