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Search Results: 1 - 10 of 63809 matches for " Antonio Pedro;Fernandes Neto "
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Polytetrafluorethylene added to acrylic resins: mechanical properties
Straioto, Fabiana Gouveia;Ricomini Filho, Antonio Pedro;Fernandes Neto, Alfredo Júlio;Del Bel Cury, Altair Antoninha;
Brazilian Dental Journal , 2010, DOI: 10.1590/S0103-64402010000100009
Abstract: the addition of different polymers, such as polytetrafluorethylene (ptfe), to denture base resins could be an option to modify acrylic resin mechanical properties. this study evaluated the surface hardness, impact and flexural strength, flexural modulus and peak load of 2 acrylic resins, one subjected to a long and another subjected to a short polymerization cycle, which were prepared with or without the addition of 2% ptfe. four groups were formed according to the polymerization cycle and addition or not of ptfe. forty specimens were prepared for each test (10 per group) with the following dimensions: hardness (30 mm diameter x 5 mm thick), impact strength (50 x 6 x 4 mm) and flexural strength (64 x 10 x 3.3 mm) test. the results of the flexural strength test allowed calculating flexural modulus and peak of load values. all tests were performed in accordance with the iso 1567:1999 standard. data were analyzed statistically by anova and tukey's test with the level of significance set at 5%. no statistically significant differences (p>0.05) were found for surface hardness. flexural strength, impact strength and peak load were significantly higher (p<0.05) for resins without added ptfe. the flexural modulus of the acrylic resin with incorporated 2% ptfe polymerized by long cycle was significantly higher (p<0.05) than that of the other resins. within the limits of this study, it may be concluded that the addition of ptfe did not improve the mechanical properties of the evaluated acrylic resins.
Improvement in RNA extraction from S. cerevisie by optimization in the autolysis and NH3 hydrolysis
Oliveira, Antonio Martins;Oliva Neto, Pedro de;
Brazilian Archives of Biology and Technology , 2011, DOI: 10.1590/S1516-89132011000500019
Abstract: the optimization of autolysis of saccharomyces cerevisiae from brewery was studied aiming at the maximum ribonucleic acid extraction and yeast extract production. the best conditions for yeast autolysis was 55.2oc, ph= 5.1 and 9.8% nacl for 24h of processing, without the nh3 use. in these conditions, the rna yield was 89.7%, resulting in 51.3% of dehydrated yeast extract with 57.9% protein. the use of 12.2% nh3 at 60oc after autolysis (8h) and plasmolysis (8h) was not viable due to the reduction in the rna yield from 89.7to78.4%. on the other hand, the thermal shock at 60oc for 15 minutes prior to autolysis provided an increase in the yield from 89.7 to 91.4%. the autolysis, including nacl plasmolysis in the optimized conditions was efficient, economic and with short time, thus usable for industrial purpose to obtain more valuable products such as yeast extract enriched in rna and/or protein, for different applications.
O significado do tqm e modelos de implementa??o
Fernandes, Aguinaldo Aragon;Costa Neto, Pedro Luiz de Oliveira;
Gest?o & Produ??o , 1996, DOI: 10.1590/S0104-530X1996000200004
Abstract: begining with a sound analysis of deming's 14 principles, the article explores the meaning of tqm according to its main fundamental elements: customer focus, process focus, employee commitment, leadership, results orientation and learning. the relationship among these elements is shown, as well as the management approaches to implement this new business philosophy. the theoretical tqm models are also presented, with the practical approaches used by world class companies. the tqm implementation critical success factors are adressed and several suggestions are given to brazilian companies which aim to become competitive enterprises.
O sistema respiratório e o idoso: implica??es anestésicas
Fernandes, Cláudia Regina;Ruiz Neto, Pedro Poso;
Revista Brasileira de Anestesiologia , 2002, DOI: 10.1590/S0034-70942002000400011
Abstract: background and objectives: respiratory complications are responsible for a major number of elderly deaths after surgical procedures. aging entails an important decrease in respiratory system functional reserves, while an increasing number of elderly people are being submitted to increasingly complex procedures. this study is a review of the respiratory system during aging and of anesthesia-induced changes in the elderly, emphasizing preoperative evaluation of respiratory function, postoperative pulmonary complications and details of anesthetic management. contents: physiologic respiratory changes due to aging are presented, with emphasis in pulmonary volume and capacity abnormalities, respiratory mechanics and gas exchange provided by anesthesia. perioperative pulmonary mortality and morbidity in elderly patients are addressed, emphasizing the importance of appropriate preoperative evaluation, from stress tests to specific tests, to quantify pulmonary functional reserves. appropriate anesthetic techniques for the elderly are discussed. conclusions: aging brings about several respiratory system changes. evidences have shown that, even in the absence of pulmonary disease, advanced age is a risk factor for postoperative pulmonary complications. it is necessary a thorough evaluation of preoperative respiratory function, adequate anesthetic management and specific postoperative care.
Resposta da goiabeira à lamina de água e à aduba??o nitrogenada
Maciel, José L.;Dantas Neto, José;Fernandes, Pedro D.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2007, DOI: 10.1590/S1415-43662007000600004
Abstract: the objective of this research was to study the effects of irrigation and nitrogen fertilization applied by fertigation on the productivity of the guava, paluma variety, four years old, under microirigation system with 6 x 5 m spacing. the experiment was carried out at the experimental station of veludo, in itaporanga city, pb. the experimental design was randomized blocks, in a 4 x 4 factorial scheme with four repetitions, whose factors were: four irrigation levels, l1 = 0.60 lb, l2 = 1.00 lb, l3 = 1.40 lb and l4 = 1.80 lb and four levels of nitrogen, n1 = 50, n2 = 100, n3 = 150 and n4 = 200 kg ha-1. the irrigation was accomplished daily during the crop cycle (198 days) after frutification pruning. the fertigation was performed three days a week during the crop cycle (80 applications). the effects of the treatments were evaluated by production, number of fruits per plant, total weight of fruits per plant and mean weight of fruits. the maximum economic productivity for the two factors (l x n) was 35.594 kg ha-1 with the application of l = 1.721 mm and n = 167 kg ha-1, with total income of r$ 13,154.68 ha-1, considering the water cost of r$ 0.65 mm ha-1 and nitrogen cost of r$ 1.15 kg-1 and sale price py = r$ 0.50 kg.
O sistema respiratório e o idoso: implica es anestésicas
Fernandes Cláudia Regina,Ruiz Neto Pedro Poso
Revista Brasileira de Anestesiologia , 2002,
Abstract: JUSTIFICATIVA E OBJETIVOS: As complica es respiratórias s o responsáveis por grande parte dos óbitos após procedimentos cirúrgicos que ocorrem na popula o geriátrica. O envelhecimento causa importante diminui o da reserva funcional do sistema respiratório, e um número crescente de pacientes idosos está sendo submetido a procedimentos cada vez mais complexos. O objetivo deste trabalho é revisar o sistema respiratório durante o processo de envelhecimento, as altera es causadas pela anestesia no idoso, enfatizando a avalia o pré-operatória da fun o respiratória, complica es pulmonares pós-operatórias e detalhes do manuseio anestésico. CONTEúDO: S o apresentadas as altera es respiratórias fisiológicas do envelhecimento. S o enfatizadas as altera es de volume e capacidades pulmonares, da mecanica respiratória e de trocas gasosas proporcionadas pela anestesia. S o abordados aspectos relativos à morbimortalidade pulmonar pós-operatória em geriatria, destacando-se a importancia da adequada avalia o pré-operatória, considerando-se desde testes de esfor o até testes específicos que quantificam a reserva funcional pulmonar. S o discutidas técnicas anestésicas apropriadas em idosos. CONCLUS ES: O envelhecimento é acompanhado de altera es no sistema respiratório. Evidências demonstram que mesmo na ausência de pneumopatia, a idade avan ada constitui fator de risco para complica es pulmonares no pós-operatório. Deve haver preocupa o com adequada avalia o pré-operatória da fun o respiratória, apropriado manuseio anestésico e cuidados pós-operatórios específicos.
Outcrossing rate between 'Haden' and 'Tommy Atkins' mangoes estimated using microsatellite and AFLP markers
Santos, Carlos Antonio Fernandes;Lima Neto, Francisco Pinheiro;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000800016
Abstract: the objective of this work was to estimate outcrossing rates between haden and tommy atkins mango cultivars, using aflp and microsatellite markers. progenies of an isolated 'haden' plant, identified in a 'tommy atkins' commercial orchard, in petrolina, pe, brazil, were analyzed. total dna was isolated from the progeny leaves and used for aflp and microsatellite reactions. multilocus outcrossing rates (tm) were estimated by direct count of aflp or microsatellite markers and by the mltr software. outcrossing rates ranged from 0.85 to 0.87 with the analysis based on seven aflp markers, and from 0.83 to 0.91 based on three microsatellite primers. no unexpected band patterns were observed for 'haden' and 'tommy atkins'. the estimates obtained with the mltr software were close to those obtained by direct aflp and microsatellite allele counting, which indicates that the multilocus model was appropriate for this kind of study. the microsatellites mmicir005, mmicir030, and mmicir036 can be used to elucidate the origin of 'haden' and 'tommy atkins' seedlings.
Inguinal Hernia Repair with Local Anesthesia in the Outpatient—10 Year Experience  [PDF]
Flavio Antonio de Sá Ribeiro, Baltazar de Araujo Fernandes, Jo?o Pedro de Araujo Sim?es Corrêa
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.512088
Abstract:

Objective: To demonstrate the feasibility of inguinal hernia repair with local anesthesia in an out-patient regime, with safety, efficacy and short learning curve. Methods: We prospectively evaluated 1186 patients undergoing inguinal hernia repair under local anesthesia on an outpatient basis between November 2004 and March 2014. Of the total number of hernias surgically treated in this period, 755 were operated on the right, 394 on the left and 37 bilateral. We used clinical, surgical and psychosocial criteria for inclusion in the procedure. The parameters for exclusion were complex, irreducible or recurrent hernia, obesity (BMI greater than 30 kg/m2), patient’s refusal and psychiatric disorder. All patients underwent elective surgery and were analyzed regarding surgical outcome, complications and hospital stay. Results: All operations were completed successfully. In no case there was a need to change the anesthetic method. Surgical time was similar to that conducted with other methods of anesthesia and there were no cases of adverse effects of local anesthetics. Intra-operative complications amounted to approximately 2.64%. There was no need for hospital admissions greater than 24 hours. Conclusion: The procedure is feasible and causes no perioperative significant pain, is safe, can be performed by residents under supervision, has satisfactory patient acceptance and complications similar to those observed in a conventional herniorrhaphy, allowing lower time and cost of hospitalization and faster access to treatment.

Indicadores de desempenho para a gest?o pela qualidade total: uma proposta de sistematiza??o
Martins, Roberto Antonio;Costa Neto, Pedro Luiz de Oliveira;
Gest?o & Produ??o , 1998, DOI: 10.1590/S0104-530X1998000300010
Abstract: this paper presents a comprehensive approach to performance measures for total quality management. the aim is to help organizations to measure their performance in total quality management philosophy. first, the evolution of both quality concept and quality management is presented. then, a total quality management reference model is adopted and attainment levels of performance indicators are defined. some proposals of other authors are briefly presented and discussed. the result is a performance indicator system that measures the stakeholders' satisfaction at the macro and microprocess levels of any organization in a coherent and comprehensive way.
Daily activity patterns of visits by males of four species of Eulaema (Apidae: Euglossina) to odor baits in a tropical forest fragment in Bahia, Brasil
Melo, Pedro N.;Gimenes, Miriam;Oliveira Neto, Antonio;
Zoologia (Curitiba) , 2009, DOI: 10.1590/S1984-46702009000200002
Abstract: several studies have been conducted with bees of the subtribe euglossina using odor baits as attractants. the objective of this study was to analyze the daily activity pattern of visits by males of four species of eulaema - eulaema nigrita lepeletier, 1841, eulaema flavescens (friese, 1899), eulaema cingulata (fabricius, 1804) and eulaema bombiformis (packard, 1869) - to vanillin and benzyl acetate baits, and their relationship with climatic and environmental factors throughout the day in different months of the year in a tropical forest fragment in bahia. eulaema nigrita was the most frequent species on vanillin baits and e. flavescens was the most frequent species on benzyl acetate baits. the highest frequency of visits was observed in february and december. activities started between 5:00 and 9:00 h. in february and november, visits of e. nigrita to the bait were observed daily, following a bimodal pattern. the same activity pattern was observed for e. bombiformis in december. males of four species of eulaema occurred in all remaining months in a unimodal daily activity pattern, with a higher frequency before 9:30 h. the correlation between the visiting activity to odor baits and climatic factors was low. this result can be due to bee flight activity occurring within a range of adequate climatic variation, particularly temperature, which in our study ranged from 23 to 32oc. daily activity patterns of euglossina males on odor baits can represent patterns of flower fragrance collection under natural conditions, with visits usually at the time of highest production.
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