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Search Results: 1 - 10 of 7841 matches for " Douglas Alcantara Alencar "
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The 2007-08 Financial Crisis from a Marxist View  [PDF]
Fernando Henrique Taques, Henrique Pavan Beiro De Souza, Douglas Alcantara Alencar
Modern Economy (ME) , 2017, DOI: 10.4236/me.2017.89074
Abstract: The international financial crisis in the American economy in 2008 brought again to the fore an economic discussion on the origin of crises. Previously, only the 1929 accident had such magnitude, putting in discussion the economic policies adopted until then, raising the economic debate between several economic schools of thought. The effects of the crisis were notorious about the financial markets, but also hit hard the real economy, especially the productive sector, such as industry and services. Indeed, the consequences on employment, income and on the level of trade were not only felt by the American economy, but also in other countries. Starting from this context, this article aims to describe the propelling elements and the forms of theoretical manifestation of the crises under a marxist perspective, seeking to understand the origins of this phenomenon from the marxist stream, as well as discourse about the 2008 crisis and its developments on the American economy. Therefore, it makes use of economic indicators on the evolution of prices and sale of real estate in the United States, growth rate of gross domestic product and employment and income between 2000 and 2010. The methodology also includes the arguments on the capital bearer of interest and fictitious capital in addition to the role of the rate of profit, exposed in the Marxist conception of the origin of financial crises. As a result, it can be seen that the fictitious capital dominates economic and political relations so that the crisis has its origin on capital and not in the productive sphere.
Accessing the Potential of Satellite and Telemetric Data to Evaluate the Influence of the Heat Flux Exchange in the Water Column Mixing and Stratification  [PDF]
Enner Alcantara
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.325092
Abstract: The objective of this work is to evaluate the feasibility of moderate resolution satellite data estimating the surface heat balance in a tropical hydroelectric reservoir. Each component of the heat flux balance was computed using the MODIS (Moderate Resolution Imaging Spectroradiometer) water surface temperature (WST) level 2, 1 km nominal resolution data (MOD11L2, version 5) from 2003 to 2008. The consequence of the heat flux exchange in the water column thermal structure is also investigated. The passage of cold front over a region decreases the atmospheric pressure and air temperature, enhancing the relative humidity. The sensible flux presents a small variability but an increase occurs due to a convective turbulence caused by front passage. The latent flux decrease but insufficiently to cause a condensation, just the evaporation decreases. The upwelling events are the responsible to maintain the loss of heat after the cold front pas- sage.
Produ??o específica de biogás a partir de manipueira em reator de fase única
Kuczman, Osvaldo;Gomes, Simone D;Tavares, Maria H. F;Torres, Douglas G. B;Alcantara, Michael S;
Engenharia Agrícola , 2011, DOI: 10.1590/S0100-69162011000100014
Abstract: this article presents a study on biogas production from wastewater cassava considering the volume of a one-phase horizontal tubular flow reactor. the objective was to evaluate the biogas production, enlarging the organic loadings and feeding volums, resulting in minor hydraulic retention times (hrt). the reactor was continuously fed with organic charges corresponding to 1.18; 1.28; 1.57 and 2.68 g cod l-1r d-1 (grams of oxygen chemical demand per liter of reactor per day), resulting in hydraulic retention times 15; 13; 8.3 and 6.6 days. the correspondent specific biogas productions were, respectively, 0.52; 0.41; 0.65 and 0.63 l l-1rd-1 , emphasizing that the 13-day was the first hrt rated, followed by 8.3, 6.6 and 15 days. it was concluded that with the hrt decrease occurred larger biogas production per reactor volume. therefore, with the correct selection for hrt, it is possible to make the best of the reactor volume, resulting in economy at the technology implantation in cassava starch industries.
Broiler mortality and human behavior at work
Alencar, Maria do Carmo Baracho de;N??s, Irenilza de Alencar;Salgado, Douglas D'Alessandro;Gontijo, Leila Amaral;
Scientia Agricola , 2006, DOI: 10.1590/S0103-90162006000600003
Abstract: brazilian broiler industry adds a significant contribution to country's exports, employing around five million workers in the production chain. the human work involves multiple aspects, including values, beliefs related to work, cultural aspects, personality, motivation etc. the aim of this research was to analyze the associations between broiler accumulated mortality and workers' beliefs related to work, and influences of the supervisors. the study took place in the state of paraná, brazil involving 80 broiler integrate farms and 60 workers. a pre-elaborated questionnaire was applied to the workers containing questions related to their health and to some beliefs related to work, as an interview where they could express their feelings. the normal tasks were identified and listed as well as the health status of each worker. the most common group health problems were related to muscle skeletal pain in the lumbar region (53.7%) with a weekly frequency, and within the last three months. the low back pain was reported mostly in prevalence of chronic pain, probably due to some manual activities such as cleaning of drinkers and feeders. statistical analysis revealed four beliefs related to the accumulated broiler mortality: the results depend on me (a); the company is serious (b); the broilers suffer (c); and training is needed to grow broilers (d). those beliefs related to work were significant in the model that described the accumulated broiler mortality (abm) as abm= 3.28 -0.254 a +0.231 b +0.336 c -0.152d. there are associations between beliefs related to work, supervisor style, and broiler accumulated mortality.
Volume equivalente: um estudo em indivíduos com otite média cr?nica
Alencar, Ana P. T.;Iório, Maria C. M.;Morales, Douglas S.;
Revista Brasileira de Otorrinolaringologia , 2005, DOI: 10.1590/S0034-72992005000500016
Abstract: the equivalent ear canal volume ranges from 0.3ml to 1.0ml in children and from 0.65 to 1.75ml in adults. in subjects with chronic otitis media these values can be different, according to the disease status. aim: to study the equivalent ear canal volume in 52 ears of patients with chronic otitis media with and without active infection. study design: clinical prospective with transversal cohort. material and method: the equivalent ear canal volume was obtained from 52 ears diagnosed with chronic otitis media with and without active infection and in age and gender matched control group. the study group with active infection was evaluated before and after clinical treatment. results: equivalent ear canal volume mean for the studied groups with and without infection and for the control group was 2.86ml; 1.42ml and 0.80ml, respectively. the equivalent ear canal volume mean for the study group with infection prior and post clinical treatment was 1.42ml and 1.82ml, respectively. conclusions: the equivalent ear canal volume mean was higher in patients with chronic otitis media. we did not observe variation of equivalent ear canal volume before and after clinical treatment.
Prevalência de parasitoses intestinais entre crian as de 4-12 anos no Crato, Estado do Ceará: um problema recorrente de saúde pública = Prevalence of intestinal parasite infections among 4- to 12-year-old children in Crato, Ceará State
Izabel Alencar Barros Vasconcelos,José Wellington Oliveira,Francisco Rubens Filgueiras Cabral,Henrique Douglas Melo Coutinho
Acta Scientiarum : Health Sciences , 2011,
Abstract: Nesse estudo, foi estimada a frequência de parasitoses intestinais em 383 crian as do bairro Pinto Madeira em Crato, Estado do Ceará. Os dados foram obtidos por meio de inquérito domiciliar e de exame coproparasitológico abrangendo residências com crian as de quatro a 12anos, foram utilizados os métodos de Kato-Katzo e Faust. Foi identificada uma associa o de parasitoses intestinais com saneamento, disponibilidade e manuseio da água, com prevalência de Ascaris lumbricoides dentre os helmintos e Entamoeba sp. dentre os protozoários. Os dados obtidos demonstraram ainda a que prevalência de helmintos e protozoários foi significativamente maior para as crian as do sexo masculino de 4-5 anos e feminino de 6-7, filhos de m es com menor escolaridade, residentes nos domicílios com piores condi es de abastecimento d’água e menor condi es de higiene corporal e saneamento básico. Estes resultados sugerem que investimentos em infraestrutura básica e a ado o de políticas voltadas para melhorar a educa o familiar poderiam contribuir significativamente na redu o da prevalência das parasitoses intestinais em crian as. In this study, we estimated the frequency of intestinal parasites in 383 children in the Pinto Madeira neighborhood of Crato-Ceará State. A survey was conducted covering households with 4- to 12-year-old children, including interviews and coprological surveys using the Kato-Katz and Faust methods. An association was identified between intestinal parasitosis and sanitation, forms of use and availability of water. The prevalence of Ascaris lumbricoides and Entamoeba sp was demonstrated. The data also showed that the prevalence of helminths and protozoa was significantly higher for 4- to 5-year-old boys and6- to 7-year-old girls, children of mothers with less education, living in households with poor conditions of water supply, hygiene and sanitation. These results suggest that investments in sanitary structure and the adoption of policies to improve family education could help significantly in reducing the prevalence of intestinal parasites in children.
Aspectos Anatómicos y Biométricos de los Puentes de Miocardio y sus Relaciones con la Arteria Interventricular Anterior y Venas Adyacentes
Sousa-Rodrigues,C.F.; Alcantara,Soares de F.; Buarque,de Gusm?o L.C.; Rocha,A. C. da; Alencar e Silva,R.; Olave,E.;
International Journal of Morphology , 2006, DOI: 10.4067/S0717-95022006000300025
Abstract: the cardiac vessels are sometimes partly overlain by myocardial bridges, what has been subject of study by innumerous researchers. the present work has as objective to study the incidence of the myocardial bridges, its length and above which vessels they are preferencially. the material consisted of 30 hearts of adult individuals of both sexes, fixed in 10% formaldeyde solution. myocardial bridges were found in 14 hearts (47%); about these, there were in 9 hearts (30%) muscle bridges only above the anterior interventricular artery; in 3 cases (10%) simultaniously over anterior interventricular artery and afluents of the anterior interventricular vein; in 1 heart (3%), it ocurred over left ventricular branches of the posterior interventricular artery and vein and in 1 heart (3%) over anterior ventricular branch of the right coronary artery. the length of the muscle bridges ranged from 9 to 55 mm. (mean 24.5 mm). we concluded that the incidence of the myocardial bridges is high and the vessel above which they are formed in greater frequency was the anterior interventricular artery in its middle portion and in minor percentages on adjacent veins
Influência do internamento materno prolongado nos resultados maternos e perinatais de duas séries de pacientes com placenta prévia
Alencar Júnior, Carlos Augusto;Alencar, Elana Couto de;Brilhante, Douglas Pinheiro;Teixeira, Marina Diógenes;Feitosa, Francisco Edson de Lucena;
Revista Brasileira de Ginecologia e Obstetrícia , 2012, DOI: 10.1590/S0100-72032012000100007
Abstract: purpose: to compare the maternal and perinatal outcomes of patients with placenta previa, after the adoption of a prolonged maternal hospital stay, to those of a 1991 series. methods: we performed a retrospective study comparing 108 cases of placenta previa hospitalized in the maternity school assis chateaubriand, universidade federal do ceará, during the period from 01/01/2006 to 12/31/2010, with those obtained in 1991, when 101 cases of the pathology were observed at our institution. the following maternal and perinatal data were collected: maternal age, parity, gestational age at delivery, mode of delivery, maternal stay length, apgar scores at the 1st and 5th minutes, birth weight, adequacy of birth weight, neonatal length stay, maternal and neonatal morbidity and mortality rates (maternal, fetal, neonatal and perinatal). statistical analysis was performed using the χ2 and fisher's exact tests. the results were considered significant when p<0.05. results: in 1991, placenta previa was found in 1.13% of cases (101/8900). in the present study, the prevalence was 0.43% (108/24726). no maternal death was observed in either series. regarding the study of 1991, the current patients were significantly younger, with lower parity, were hospitalized longer, had better apgar scores at 1st and 5th minutes, and had longer neonatal hospitalization. also, we identified reduction of fetal, neonatal and perinatal mortality. conclusions: perinatal outcomes in patients with placenta previa were significantly improved between 1991 and the years 2006 and 2010. however, we can not say whether this improvement was due to the prolonged maternal hospital stay.
Efeito das temperaturas de bulbo seco e de globo negro e do índice de temperatura e umidade, em vacas em produ??o alojadas em sistema de free-stall
Marcheto, Francine Galhiardo;N??s, Irenilza de Alencar;Salgado, Douglas D'Alessandro;Souza, Silvia Regina Lucas de;
Brazilian Journal of Veterinary Research and Animal Science , 2002, DOI: 10.1590/S1413-95962002000600008
Abstract: dairy cows exposition to an adequate environment may lead to a good result in the milk production, for permitting a better use of cooling equipment and reducing the thermal stress in the animals, as well as improving level of productivity. this research work evaluated the effect of environmental dry bulb and black globe temperatures in dairy cows lodged in a freestall building, separated in two groups: the most productive ones with milk yield above 29 kgday-1 and the less productive, with milk yield below 14 kg/day. results showed the effect of the environmental variables and the temperature and humidity index in the decrease in milk yield. no high correlation was found between the index and the milk yield for both studied groups.
Avalia??o de poluentes aéreos em instala??es de creche e termina??o de suínos
Sampaio, Carlos Augusto de Paiva;N??s, Irenilza de Alencar;Baracho, Marta dos Santos;Salgado, Douglas D'alessandro;
Ciência Rural , 2007, DOI: 10.1590/S0103-84782007000200030
Abstract: this research was developed in two swine housings in the phases of nursery and finishing: in two pens each, in two farms located at salto county, sp, with the objective to evaluate ammonia and concentrations, and fungi presence besides estimating the occupational risk of exposure to these environmental agents. the evaluations were done according to recommended by the norms nr-15, niosh e acgih. results indicated significant difference in ammonia concentration in relation to the hour, the housing and to the day period. they also indicate negligence to sanitary ventilation matter in nursery housing with consequent higher level of ammonia; which are linked to the air circulation inside housing, the manure and curtain management, housing typology, and to local climate conditions; besides swine crowd and density. total dust concentration was higher in nursery buildings (0.84-9.16mg.m-3) than in finishing (0.84-3.34mg m-3), while inhale dust was higher in the nursery, however lower than 3.67mg m-3, and within the labor welfare limits. there were found fungi from genus aspergillus, penicillium and neurospora in suspension in the internal environmental of the studied housings.
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