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Search Results: 1 - 10 of 57776 matches for " Luiz Felipe Rodrigues;Costa "
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Measurement of the optical density of packable composites: comparison between direct and indirect digital systems
Graziottin, Luiz Felipe Rodrigues;Costa, Nilza Pereira da;Silveira, Ivori Dutra da;Veeck, Elaine Bauer;
Pesquisa Odontológica Brasileira , 2002, DOI: 10.1590/S1517-74912002000400004
Abstract: the aim of this study was to measure the optical density of four packable composite resins with widths of 1, 2, 3 and 4 mm, by means of digora? (direct) and dentscan dentview? (indirect) digital imaging systems, in order to compare both methods. twenty acrylic plates, with the proposed thicknesses, were used, each one containing a sample of each resin. each acrylic plate was radiographed three times, under a standardized technique. for the digora? system, an optical plate was used under each resin sample, and, for the dentscan dentview? system, occlusal films were employed, totalizing 60 exposures for each system. optical plates and films were scanned and three consecutive optical readouts were carried out, totalizing 1,440 readouts. the results were submitted to statistical analysis and revealed that the average optical density of the four resins always increased as thickness increased. regarding the comparisons between the composite resins, in both analysis the resin with the greater optical density was surefil? followed by prodigy? condensable, alert? and solitaire?. the correlations between the results of digora? and dentscan dentview? were significant for the different thicknesses and materials. the observed tendency is that as the values obtained with the digora? system increase, so do the values obtained with dentscan dentview?. while thickness increased, the values of optical density in both digora? and dentscan dentview? tended to approach each other. the digora? system presented smaller amplitude between the results obtained in adjacent thicknesses.
Measurement of the optical density of packable composites: comparison between direct and indirect digital systems
Graziottin Luiz Felipe Rodrigues,Costa Nilza Pereira da,Silveira Ivori Dutra da,Veeck Elaine Bauer
Pesquisa Odontológica Brasileira , 2002,
Abstract: The aim of this study was to measure the optical density of four packable composite resins with widths of 1, 2, 3 and 4 mm, by means of Digora (direct) and DentScan DentView (indirect) digital imaging systems, in order to compare both methods. Twenty acrylic plates, with the proposed thicknesses, were used, each one containing a sample of each resin. Each acrylic plate was radiographed three times, under a standardized technique. For the Digora system, an optical plate was used under each resin sample, and, for the DentScan DentView system, occlusal films were employed, totalizing 60 exposures for each system. Optical plates and films were scanned and three consecutive optical readouts were carried out, totalizing 1,440 readouts. The results were submitted to statistical analysis and revealed that the average optical density of the four resins always increased as thickness increased. Regarding the comparisons between the composite resins, in both analysis the resin with the greater optical density was SurefilTM followed by ProdigyTM Condensable, AlertTM and Solitaire . The correlations between the results of Digora and DentScan DentView were significant for the different thicknesses and materials. The observed tendency is that as the values obtained with the Digora system increase, so do the values obtained with DentScan DentView . While thickness increased, the values of optical density in both Digora and DentScan DentView tended to approach each other. The Digora system presented smaller amplitude between the results obtained in adjacent thicknesses.
Distantiae Transmission of Trypanosoma cruzi: A New Epidemiological Feature of Acute Chagas Disease in Brazil
Samanta Cristina das Chagas Xavier,André Luiz Rodrigues Roque,Daniele Bilac,Vitor Ant?nio Louzada de Araújo,Sócrates Fraga da Costa Neto,Elias Seixas Lorosa,Luiz Felipe Coutinho Ferreira da Silva,Ana Maria Jansen
PLOS Neglected Tropical Diseases , 2014, DOI: 10.1371/journal.pntd.0002878
Abstract: Background The new epidemiological scenario of orally transmitted Chagas disease that has emerged in Brazil, and mainly in the Amazon region, needs to be addressed with a new and systematic focus. Belém, the capital of Pará state, reports the highest number of acute Chagas disease (ACD) cases associated with the consumption of a?aí juice. Methodology/Principal Findings The wild and domestic enzootic transmission cycles of Trypanosoma cruzi were evaluated in the two locations (Jurunas and Val-de C?es) that report the majority of the autochthonous cases of ACD in Belém city. Moreover, we evaluated the enzootic cycle on the three islands that provide most of the a?aí fruit that is consumed in these localities. We employed parasitological and serological tests throughout to evaluate infectivity competence and exposure to T. cruzi. In Val-de-C?es, no wild mammal presented positive parasitological tests, and 56% seroprevalence was observed, with low serological titers. Three of 14 triatomines were found to be infected (TcI). This unexpected epidemiological picture does not explain the high number of autochthonous ACD cases. In Jurunas, the cases of ACD could not be autochthonous because of the absence of any enzootic cycle of T. cruzi. In contrast, in the 3 island areas from which the a?aí fruit originates, 66.7% of wild mammals and two dogs displayed positive hemocultures, and 15.6% of triatomines were found to be infected by T. cruzi. Genotyping by mini-exon gene and PCR-RFLP (1f8/Akw21I) targeting revealed that the mammals and triatomines from the islands harbored TcI and Trypanosoma rangeli in single and mixed infections. Conclusion/Significance These findings show that cases of Chagas disease in the urban area of Belém may be derived from infected triatomines coming together with the a?aí fruits from distant islands. We term this new epidemiological feature of Chagas disease as “Distantiae transmission”.
Intake, performance, digestibility, microbial efficiency and carcass characteristics of growing Nellore heifers fed two concentrate levels
Gionbelli, Mateus Pies;Valadares Filho, Sebasti?o de Campos;Detmann, Edenio;Paulino, Pedro Veiga Rodrigues;Valadares, Rilene Ferreira Diniz;Santos, Tathyane Ramalho;Silva, Luiz Fernando Costa e;Magalh?es, Felipe Antunes;
Revista Brasileira de Zootecnia , 2012, DOI: 10.1590/S1516-35982012000500023
Abstract: the objective of this study was to evaluate nutrients and dry matter intake, average daily gain, feed efficiency and digestibility of diets, microbial efficiency, cold carcass yield and basic cuts yields of young nellore heifers receiving two concentrate levels. nineteen heifers with initial average weight of 165.6±29.8 kg were used. three animals were used in a trial to determine the digestibility and microbial efficiency of the two levels of concentrate (225 and 450 g/kgdm) and a treatment with a restricted intake maintenance level. the remaining 16 heifers were confined for 168 days for evaluation of performance and intake, divided into two levels of concentrate. every 42 days, four animals, two from each concentrate level, were slaughtered to determine carcass characteristics, making a 2 × 4 factorial arrangement. digestibility and microbial efficiency were not affected by concentrate level or intake level, both for ad libitum and restricted feeding. heifers fed 450 g/kgdm concentrate diet had greater average daily gain than those fed 225 g/kgdm concentrate. dry matter intake and feed efficiency did not differ between levels of concentrate. average daily gain (kg/day), dry matter intake (% body weight/day) and feed efficiency were higher in the first period of feedlot (0-42 days) compared with the other (42 to 168 days). heifers fed 450 g/kgdm concentrate had greater average daily gain than those fed 225 g/kgdm concentrate.
Rese a de "A memória da Copa de 70: esquecimentos e lembrancas do futebol na construcao da identidade nacional" de Marco Antonio Santoro Salvador y Antonio Jorge Goncalves Soares
Felipe Rodrigues da Costa,Wagner dos Santos
Movimento , 2011,
Abstract:
Mathematical Modeling for Isotherms of Mango Pulp Powder, Obtained by Atomization  [PDF]
érica Mil? de Freitas Felipe Rocha, Sueli Rodrigues, Marcos Rodrigues Amorim Afonso, José Maria Correia da Costa
Journal of Encapsulation and Adsorption Sciences (JEAS) , 2014, DOI: 10.4236/jeas.2014.41002
Abstract: Mango, as the other fruits, is a perishable food that can be easily deteriorated and presents high levels of post-harvest loss. Therefore, dehydration is an important alternative to use the production excess. In this context, this work aimed at evaluating the hygroscopic behavior of the integral mango pulp powder, obtained by atomization, by means of adsorption isotherm. After applying BET’s, GAB’s, Henderson’s and Oswin’s mathematical models, it was possible to identify that the equations for two models were perfectly adjusted to the experimental results of mango pulp powder. Henderson’s model was the best adjusted experimental curve and showed the lowest average error (E) and the highest determination coefficient (R2) at all temperatures studied.
Caracteriza??o da gravidez com insuficiência istmocervical
Rodrigues, Liliane Costa;Mattar, Rosiane;Camano, Luiz;
Revista Brasileira de Ginecologia e Obstetrícia , 2003, DOI: 10.1590/S0100-72032003000100005
Abstract: purpose: to identify characteristics common to women who suffer from cervical incompetence (ci) allowing their early identification and helping in the follow-up of the gestational-postdelivery cycle. patients and methods: fifty pregnant women suffering from ci and submitted to uterine cerclage according to modified mcdonald's technique were analyzed in an observational descriptive study. the following variables of the medical records were evaluated: age, preceding obstetrical aspects, time of ci diagnosis, cerclage-related aspects and preterm delivery incidence. results: the average age of the mothers was 29.28 years and mean number of previous gestations was 3.76. as to the preceding obstetrical aspects, 189 gestations with a ci diagnosis were reported and cerclage had been applied to 18 of them, resulting in 18 babies who were born alive (8 preterm deliveries and 10 term deliveries). of the 171 previous pregnancies in which ci diagnosis was not reported, 90 progressed to abortion, 68 were preterm and 13 were term deliveries. in 30 (60%) patients, ci was diagnosed during the intergestational interval, and 20 (40%) during gestation. the average gestational period in which patients were submitted to cerclage was 18.29 weeks; 40% of the cerclages were emergency procedures and 60% were elective. the incidence of prematurity was 30% (15/50). conclusion: careful obstetrical evaluation of multiparous women, presenting recurrent miscarriages, during the intergestational interval and/or during the first trimester of pregnancy, may allow the early diagnosis and adequate treatment of ci, avoiding prematurity.
Caracteriza o da gravidez com insuficiência istmocervical
Rodrigues Liliane Costa,Mattar Rosiane,Camano Luiz
Revista Brasileira de Ginecologia e Obstetrícia , 2003,
Abstract: OBJETIVO: identificar características comuns às portadoras de insuficiência istmocervical (IIC) que serviriam para reconhecê-las precocemente e auxiliariam no seguimento do ciclo gravídico-puerperal. PACIENTES E MéTODOS: cinqüenta gestantes portadoras de IIC submetidas à circlagem uterina segundo a técnica de McDonald modificada foram analisadas em estudo descritivo observacional. Por meio dos dados dos prontuários, foram estudadas as seguintes variáveis: idade, antecedentes obstétricos, momento do diagnóstico de IIC, aspectos relativos à circlagem e incidência de prematuridade. RESULTADOS: em média, a idade materna foi de 29,2 anos e o número de gesta es anteriores foi de 3,7. Quanto aos antecedentes obstétricos, tivemos 189 gesta es anteriores; em 18 delas já se tinha o diagnóstico de IIC e a circlagem havia sido realizada, tendo resultado em 18 crian as vivas (8 nasceram prematuramente e 10 no termo). Das 171 prenhezes prévias em que o diagnóstico de IIC n o estava firmado, 90 evoluíram para abortamentos, 68 foram partos pré-termos e 13 de termo. Em rela o ao momento do diagnóstico de IIC, 30 (60%) pacientes tiveram-no firmado no intervalo entre os partos e 20 (40%) durante a gesta o. A idade gestacional média em que as pacientes foram submetidas à circlagem foi de 18,2 semanas; 40% das circlagens foram de urgência e 60% eletivas. A incidência de prematuridade foi de 30% (15/50). CONCLUS O: a avalia o obstétrica cuidadosa de multigestas com perdas gestacionais recorrentes, no intervalo entre os partos e/ou no primeiro trimestre da gravidez, pode permitir o diagnóstico precoce e tratamento adequado da IIC, evitando a prematuridade.
Rare Diagnosis of Krukenberg Tumor: Intrahepatic Cholangiocarcinoma  [PDF]
Tiago Castello Branco Lyra, Fernando Morbeck, Marcos Duarte Guimar?es, Luiz Felipe Sias Franco, Edson Marchiori, Glaucio Siqueira, Carlos Chaves Faloppa, Felipe D'almeida Costa, Stephania Martins Bezerra
Open Journal of Medical Imaging (OJMI) , 2015, DOI: 10.4236/ojmi.2015.53020
Abstract: Krukenberg tumor is a rare ovarian metastatic cancer from the gastrointestinal tract. It accounts for 1%-5% of malignant tumors of the ovaries, usually being bilateral, of solid consistency and may have cystic areas. The World Health Organization (WHO) defined it as an ovarian metastasis when the mucus-secreting cells of “signet ring” are present, associated with sarcomatous stromal proliferation. We present a 58-year-old woman with the diagnosis of peripheric cholangiocarcinoma with ovarian metastasis, showing history of pain and increased abdominal volume. Magnetic Resonance Imaging (MRI) showed multiple hepatic solid nodules with predominantly peripheral, centripetal and progressive enhancement, demonstrating hipersignal and restriction on diffusion weighted imaging (DWI). In the anexial region, bulky heterogeneous multiloculated cystic formations with solid components, of probable ovarian origin, were noted. Biopsy of the liver nodules confirmed the diagnosis of cholangiocarcinoma.
Avalia??o de programa de aten??o à saúde: incentivo à oferta de aten??o ambulatorial e a experiência da descentraliza??o no Brasil
Costa,Nilson do Rosário; Pinto,Luiz Felipe;
Ciência & Saúde Coletiva , 2002, DOI: 10.1590/S1413-81232002000400022
Abstract: the article analyses the results of the research cost and evaluation of the impact of the implantation of the basic care incentive (piso de aten??o básica), which evaluated the decentralization of health services through incentives for primary care services supply. from a retrospective longitudinal study, the changes in the structure of the federal financial incentives for states and municipalities are analyzed. the article also discusses the impact of the basic care oriented policy on the supply of the ambulatorial care and in the health care labor force at municipal level. the paper shows a meaning increase of the ambulatorial and primary care supply in the public sector in brazil in the nineties. the small cities has been soundly favored with the new financial incentives from the public policy.
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