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Search Results: 1 - 10 of 31376 matches for " Paulo Afonso;Magalh?es "
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Perfil dos consumidores de hortali?as minimamente processadas de Belo Horizonte
Perez, Ronaldo;Ramos, Afonso Mota;Binoti, Mirella Lima;Sousa, Paulo Henrique Machado de;Machado, Gisela de Magalhes;Cruz, Iara Borges;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000400004
Abstract: consumer's food consciousness has increased, however, time for preparing healthy food has decreased. therefore, the market of minimally processed vegetable has increased rapidly, giving rise to the appearance of fresh products that can be prepared and consumed faster than conventional foods. thus, the objective of this work was to establish the behavior and profile of minimally processed vegetable consumers in supermarkets of belo horizonte, minas gerais state, brazil. based on the answers to a survey, the consumers profile was traced, highlighting preferences, habits, complaints and demands. the survey was conducted with consumers of five supermarkets which sell minimally processed vegetables (mpv). consumers were chosen randomly when they were buying in november 2004. of two hundred and forty six interviewed persons, 23% were consumers of mpv. the main reasons for consumption were: easiness and feasibility (46%); short preparation time (21%) of meals and hygiene (11%) of the products; and the main reasons against consumption were: the high price of the precuts (31,9%); easy to prepare and/or to choose (23%) and distrusting (17,8%) the offered products. the major consumers were those with a better education. comparing the overrating of mpv with other vegetables, a variation of 2,4 (potato) to 39,5 times (carrots) was found. on average the overrating found in markets for eleven mpv was of 10 times.
Rotavirus and adenovirus in Rond?nia
Magalhes, Gleiciene Félix;Nogueira, Paulo Afonso;Grava, Andréa Fagundes;Penati, Marilene;Silva, Luiz Hildebrando Pereira da;Orlandi, Patricia Puccinelli;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007005000067
Abstract: acute gastroenteritis is one of the most common diseases in humans worldwide. viral gastroenteritis is a global problem in infants and young children. in this study the incidence of diarrhea was assessed in 877 hospitalized children under five years old, over a period of 24 months and distributed in 470 cases of diarrhea and 407 age-matched group with other pathologies, as control group. two antigen detection techniques based on enzyme immunoassay (eia) and latex particles were used for detection of rotavirus and adenovirus. rotavirus a was a major cause of gastroenteritis with 23.6% of cases, being 90% of these cases in young children. adenovirus infections was detected by eia with frequency of 6.4%. rotavirus and adenovirus were detected in 10.1 and 1.7% of stools from control group, respectively. interestingly, the frequency of the youngest children in the control group excreting rotavirus a was comparable to that detected in stools from diarrheic children. we cannot rule out the existence of other enteric viruses because the etiology of 171 cases of diarrhea was not determined and active search for astrovirus and calicivirus was not done. this is the first study that shows the presence of enteric viruses in the infantile population from western brazilian amazonia and it was important to help physicians in the treatment of viral gastroenteritis.
Characterization of Shigella spp. by antimicrobial resistance and PCR detection of ipa genes in an infantile population from Porto Velho (Western Amazon region), Brazil
Silva, Tatiane;Nogueira, Paulo Afonso;Magalhes, Gleiciene Félix;Grava, Andréa Fagundes;Silva, Luiz Hildebrando Pereira da;Orlandi, Patrícia Puccinelli;
Memórias do Instituto Oswaldo Cruz , 2008, DOI: 10.1590/S0074-02762008000700017
Abstract: the incidence of shigella spp. was assessed in 877 infants from the public hospital in rond?nia (western amazon region, brazil) where shigella represents the fourth cause of diarrhea. twenty-five isolates were identified: 18 were shigella flexneri, three shigella sonnei, three shigella boydii and one shigella dysenteriae. with the exception of s. dysenteriae, all shigella spp. isolated from children with diarrhea acquired multiple antibiotic resistances. pcr detection of ipa virulence genes and invasion assays of bloody diarrhea and fever (colitis) were compared among 25 patients testing positive for shigella. the ipah and ipabcd genes were detected in almost all isolates and, unsurprisingly, all shigella isolates associated with colitis were able to invade hela cells. this work alerts for multiple antibiotic resistant shigella in the region and characterizes presence of ipa virulence genes and invasion phenotypesin dysenteric shigellosis.
Acta Cirurgica Brasileira , 1998, DOI: 10.1590/S0102-86501998000300001
Abstract: thirty two dogs were operated on in order to evaluate the mucosal regeneration of the serosal patch at the gastroesophageal junction. the operation began with a cardiotomy involving one centimeter of the esophagus and two centimeters of the stomach, originating an elliptical serosal surface three centimeters long and one centimeter large. turned to the digestive lumen. the animals were divided into four groups of eight dogs each and named: 1, 2, 3 and 4; they were sacrificed after one, two, four and eight weeks respectively. the results were evaluated by post-operative clinical aspects, macro and microscopic analysis. post-operative morbidity was low, without signs of digestive tract obstruction. macroscopically, the patch area at the first week became an ulcerated lesion, with a necrotic bottom; at the second and fourth weeks there was a progressive reduction of the ulcer, from its boundaries to the center, until the complete healing at the eighth week. microscopically, the serous membrane disappeared early and it was replaced by inflamatory cells and severe neovascular formation, which fitted as a bed to the epithelial proliferation. the neo-epithelization occurred from the periphery to the center of the lesion. at the esophagus this process was completed within two weeks, with multiple layers of cells; at the stomach, within four weeks, with an unicellular epithelium. the corium, showing an inflamatory reaction at the first week, with fibrinoid necrosis and polimorphonuclear cells, changed to a fibroblastic proliferation with mononuclar cells at the second and fourth weeks and, finally, to fibrosis at the eighth week. in the animals sacrificed lately there was regeneration of the smooth muscle layer of the esophagus. at electronic microscopy, the neo-epithelium of the esophagus had all the layer which constitute the normal esophageal epithelium.
Comportamento da palha de cana-de-a?úcar submetida ao corte por meio de ensaios de bancada
Bianchini, Aloisio;Magalhes, Paulo S. G.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2004, DOI: 10.1590/S1415-43662004000200021
Abstract: from an engineering standpoint, few papers on crop residue shearing have been published, especially with respect to sugarcane and information on the subject is scarce. therefore, the objective of this work was to study the behavior of sugarcane trash submitted to shearing, as a function of its moisture content, thickness of trash layer and the oblique angle of the blade. a strength transducer, connected to the base of the blades and to an automatic data logger, was utilized to collect data, working at an acquisition rate of 9600 hz. results showed significant differences in the required strength when the oblique angle of the blade is changed, and a linear trend with the amount of trash between 4 and 16 t ha-1. the strength requirement and the energy demand showed an exponential behavior with changes in moisture content of sugarcane trash. for moisture content above 28% (dry basis), the differences between required shearing strengths and energy demands were no longer significant. the maximum shearing strength showed a linear trend which was inversely proportional to the oblique angle of the blade.
Nova estratégia de desenvolvimento para o Brasil: um enfoque de longo prazo
Magalhes, Jo?o Paulo de Almeida;
Revista de Economia Política , 2006, DOI: 10.1590/S0101-31572006000200002
Abstract: the foremost aim of the article is to propose a new development strategy for brazil, replacing the neoliberal model presently used. in short, the point is to recover a long term vision of the economic policies. and for that it is indispensable to take into consideration the recent evolution of the development economics which considers the existence of market, instead of the availability of savings, as the main condition in economic development policies. the acceptance of the market as the basic condition for successful development policies has as one of its consequences the unacceptability of the process of globalization with its present characteristics.
Acta Cirurgica Brasileira , 1998,
Abstract: Trinta e dois c es foram submetidos ao tamponamento seroso da jun o esofagogástrica, com o objetivo de investigar experimentalmente o processo de repara o mucosa. A opera o constou de cardiotomia, interessando um centímetro do es fago e dois centímetros do est mago. Esta sec o foi obliterada pelo fundo gástrico, originando uma superfície serosa elíptica, voltada para o lúmen, com três centímetros de comprimento por um centímetro de maior largura. Os animais foram divididos em quatro grupos de oito c es cada (Grupos: 1, 2, 3 e 4), sacrificados após uma, duas, quatro e oito semanas respectivamente. Os resultados foram avaliados quanto aos aspectos clínicos, pós-operatórios, e da análise macro e microscopicas dos espécimes obtidos. A evolu o pós-operatória mostrou pequena morbidade, sem sinais de obstru o do trato digestivo. Ficou demonstrado à macroscopia, que a área do tamponamento exibe, na primeira semana, aspecto de les o ulcerada, com fundo necrótico; na segunda e quarta semanas houve redu o da área cruenta, até a completa cicatriza o, melhor observada na oitava semana. à microscopia, a membrana serosa desapareceu precocemente, dando lugar a infiltrado inflamatório com intensa neoforma o vascular, que serviu de leito para a prolifera o epitelial.A neoepiteliza o fez-se das bordas para o centro da les o. No es fago, em camadas pluricelulares, completou-se em duas semanas, e no est mago, com epitélio unicelular estava completa na quarta semana.
Nova estratégia de desenvolvimento para o Brasil: um enfoque de longo prazo
Magalhes Jo?o Paulo de Almeida
Revista de Economia Política , 2006,
Abstract: The foremost aim of the article is to propose a new development strategy for Brazil, replacing the neoliberal model presently used. In short, the point is to recover a long term vision of the economic policies. And for that it is indispensable to take into consideration the recent evolution of the Development Economics which considers the existence of market, instead of the availability of savings, as the main condition in economic development policies. The acceptance of the market as the basic condition for successful development policies has as one of its consequences the unacceptability of the process of globalization with its present characteristics.
Flooding tolerance and cell wall alterations in maize mesocotyl during hypoxia
Vitorino Patrícia Goulart,Alves José Donizeti,Magalhes Paulo César,Magalhes Marcelo Murad
Pesquisa Agropecuária Brasileira , 2001,
Abstract: This research aimed to characterize the tolerance to flooding and alterations in pectic and hemicellulose fractions from mesocotyl of maize tolerant to flooding when submitted to hypoxia. In order to characterize tolerance seeds from maize cultivars Saracura BRS-4154 and BR 107 tolerant and sensitive to low oxygen levels, respectively, were set to germinate. Plantlet survival was evaluated during five days after having been submitted to hypoxia. After fractionation with ammonium oxalate 0.5% (w/v) and KOH 2M and 4M, Saracura BRS-4154 cell wall was obtained from mesocotyl segments with different damage intensities caused by oxygen deficiency exposure. The cell wall fractions were analyzed by gel filtration and gas chromatography, and also by Infrared Spectrum with Fourrier Transformation (FTIR). The hypoxia period lasting three days or longer caused cell lysis and in advanced stages plant death. The gelic profile from pectic, hemicellulose 2M and 4M fractions from samples with translucid and constriction zone showed the appearance of low molecular weight compounds, similar to glucose. The main neutral sugars in pectic and hemicellulose fractions were arabinose, xilose and mannose. The FTIR spectrum showed a gradual decrease in pectic substances from mesocotyl with normal to translucid and constriction appearance respectively.
Children with pertussis inform the investigation of other pertussis cases among contacts
Paulo N Baptista, Vera S Magalhes, Laura C Rodrigues
BMC Pediatrics , 2007, DOI: 10.1186/1471-2431-7-21
Abstract: At a University Hospital in Brazil individuals that had frequent contacts with a child with confirmed pertussis (the index case) and had recent history of cough were enrolled into the study. Nasopharyngeal swabs were collected from every contact that had cough within the last 21 days. Cases confirmation followed the guidelines of the Center for Disease Control and Prevention – Atlanta, U.S.A.Pertussis diagnosis was confirmed in 51 children, (considered the index cases). Among the index cases, 72.5% (37/51) were under 6 months of age; culture for Bordetella pertussis was positive in 78.4% (40/51). Pertussis was confirmed in 39% (107/276) of the contacts of 51 index cases. Among these contacts identified as a pertussis case, 40.2% (43/107) were between 6 months and 111/2 years of age and 59.8% (64/107) were older than 111/2 years of age. Pertussis was confirmed by culture in 11.2% (12/107) of them and by epidemiologic linkage in 88.8% (95/107). Each index case allowed identifying two new cases of pertussis.Public health authorities should consider implementing early recognition of pertussis index cases and searching for pertussis cases among the contacts. Treatment of the cases and prophylaxis of the contacts is fundamental to control outbreaks in the community.Pertussis is an endemic disease, with peaks every three to four years worldwide. Incidence of pertussis has declined, however many cases of pertussis may be underreported or not diagnosed. The World Health Organization estimates that 200.000 – 400.000 deaths occur each year, most deaths occur in infants and in developing countries [1]. Pertussis in infants younger one year of age should be considers an indicator of undetected disease in the community [2].The transmissibility period of an individual with pertussis is around 21 days, but some can transmit for a longer period. Suspect cases and cases of pertussis should be isolated from young children, infants, child care centers, schools and public gatherings. Th
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