oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 4 )

2019 ( 250 )

2018 ( 370 )

2017 ( 354 )

Custom range...

Search Results: 1 - 10 of 317806 matches for " Rosimeire Cavalcante dos;Sousa Júnior "
All listed articles are free for downloading (OA Articles)
Page 1 /317806
Display every page Item
Efeito da hidrólise ácida dos taninos de Eucalyptus grandis w. hill ex Maiden nas propriedades dos adesivos tanicos
Carneiro, Angélica de Cássia Oliveira;Vital, Benedito Rocha;Frederico, Pedro Gustavo Ulisses;Santos, Rosimeire Cavalcante dos;Sousa Júnior, Wagner Patrício de;
Revista árvore , 2009, DOI: 10.1590/S0100-67622009000400016
Abstract: the objective of this research was to evaluate the effect of the acid hydrolysis of eucalyptus grandis w. hill ex maiden bark tannins on the properties of tannic adhesives. adhesives were synthesized with tannins hydrolyzed at four ph values, three reaction times and 10% of formaldehyde based on the tannin dry weight. ninety-six glued joints were prepared with eucalyptus grandis thin boards. shear resistance and wood failure percentage were determined according to the astm d 2339-93 standards. it was concluded that tannin hydrolysis decreased adhesive viscosity and increased the glue line shear resistance. however, it was observed a low percentage of wood failure.
The adhesive effect on the properties of particleboards made from sugar cane bagasse generated in the distiller
Rafael Farinassi Mendes,Lourival Marin Mendes,José Benedito Guimar?es Júnior,Rosimeire Cavalcante dos Santos
Revista de Ciências Agrárias , 2009,
Abstract: The objective was to evaluate the effect of the adhesive type and its different contents on sugar cane bagasse particleboards. The panels were produced using Urea-Formaldehyde (UF) and Phenol-Formaldehyde (PF) adhesives. Three adhesive contents were tested: 6, 9 and 12%. The boards were made by using an 8-minute press closing time, pressure of 40kgf/cm2, and temperature of 160oC for the UF adhesive and 180oC for the PF adhesive. It was concluded that: The UF adhesive was statistically equal or better than PF adhesive considering all properties evaluated. The adhesive contents of 9 and 12% were statistically equal, but both were superior to 6% considering the physical properties. The mechanical properties did not present statistical differences, except for rupture modulus. The best panels were produced using UF at 9%, but they did not attend the norm CS 236-66 for mechanical properties, therefore it is necessary manipulations of the processing variables. O objetivo foi avaliar o efeito do tipo de adesivo e de seus diferentes teores na produ o de painéis aglomerados com baga o de cana. Os painéis foram produzidos utilizando os adesivos Uréia-Formaldeido (UF) e Fenol-Formaldeido (FF) a 6, 9 e 12%. O ciclo de prensagem utilizado foi de 40kgf/cm2, temperatura de 160oC para UF e 180oC para FF, por 8 minutos. Concluiu-se que: O adesivo UF se mostrou estatisticamente igual ou superior a FF em todas as propriedades avaliadas. Para os teores de adesivo, nas propriedades físicas, os teores 9 e 12% se mostraram estatisticamente iguais, mas superiores a 6%; já nas propriedades mecanicas n o houve diferen a estatística, com exce o do módulo de ruptura. Os melhores painéis foram produzidos com UF e 9% de teor de adesivo, sendo que estes n o atenderam a norma CS 236-66 para propriedades mecanicas, sendo necessárias manipula es nas variáveis de processamento.
The adhesive effect on the properties of particleboards made from sugar cane bagasse generated in the distiller
Mendes,Rafael Farinassi; Mendes,Lourival Marin; Júnior,José Benedito Guimar?es; Santos,Rosimeire Cavalcante dos; Bufalino,Lina;
Revista de Ciências Agrárias , 2009,
Abstract: the objective was to evaluate the effect of the adhesive type and its different contents on sugar cane bagasse particleboards. the panels were produced using urea-formaldehyde (uf) and phenol-formaldehyde (pf) adhesives. three adhesive contents were tested: 6, 9 and 12%. the boards were made by using an 8-minute press closing time, pressure of 40kgf/cm2, and temperature of 160oc for the uf adhesive and 180oc for the pf adhesive. it was concluded that: the uf adhesive was statistically equal or better than pf adhesive considering all properties evaluated. the adhesive contents of 9 and 12% were statistically equal, but both were superior to 6% considering the physical properties. the mechanical properties did not present statistical differences, except for rupture modulus. the best panels were produced using uf at 9%, but they did not attend the norm cs 236-66 for mechanical properties, therefore it is necessary manipulations of the processing variables.
Efeito da exposi o à radia o solar sobre parametros fisiológicos e estimativa do declínio na produ o de leite de vacas mesti as (Holandês X Gir) no sul do estado do Piauí
Tairon Pannunzio Dias e Silva,Ravy Guerra de Oliveira,Severino Cavalcante Sousa Júnior,Karina Rodrigues dos Santos
Comunicata Scientiae , 2012,
Abstract: Este trabalho teve o objetivo de avaliar e correlacionar as características termorreguladoras de vacas mesti as (Holandês x Gir) submetidas a três períodos diferentes de exposi o à radia o solarcom algumas variáveis meteorológicas e seus efeitos na produ o de leite. Foram utilizadas doze vacas lactantes divididas em três grupos compostos por quatro animais cada, todos de terceira lacta o, acima de cinco anos de idade e aproximadamente 50 dias de lacta o, submetidos a diferentes períodos de exposi o à radia o solar. A produ o de leite em quilogramas por vaca foi registrada em duas ordenhas diárias. A frequência respiratória (FR), a frequência cardíaca(FR), a temperatura retal (TR) e o declínio da produ o de leite (DPL) obtido pela diferen a entre as pesagens das ordenhas da manh e tarde por vaca durante o experimento foram coletadosquatro vezes por semana, em maio e junho de 2011. Os resultados revelaram que o índice temperatura e umidade (ITU) para as vacas expostas a duas horas de radia o solar foi superior a valores considerados críticos para bovinos em lacta o. O grupo três apresentou valores críticos superiores para todas as características termorreguladoras dos animais quando comparada com os grupos um e dois. As características termorreguladoras dos animais dos grupos dois e três correlacionaram-se positivamente com o declínio da produ o de leite e de maneira diferentecom as variáveis meteorológicas.
QUALITY OF COOKIES FORMULATED WITH DIFFERENT PEQUI PEEL FLOUR CONTENTS QUALIDADE DE BISCOITOS FORMULADOS COM DIFERENTES TEORES DE FARINHA DE CASCA DE PEQUI
Manoel Soares Soares Júnior,Renata Cunha dos Reis,Priscila Zaczuk Bassinello,Diracy Betania Cavalcante Lacerda
Pesquisa Agropecuária Tropical , 2009, DOI: 10.5216/pat.v39i2.5188
Abstract: The objective of this study was to evaluate the quality of cookies formulated with different pequi peel flour contents (FCP), replacing wheat flour (FT). A completely randomized design was used, with control plus four treatments (12.5%, 25%, 37.5%, and 50% of FT substitution by FCP), and four replications. The acceptability, color (brightness), nutritional composition, energetic value, and calcium, magnesium, copper, and manganese contents of each sample were analyzed. The data were evaluated by variance analysis and the averages compared by the Tukey test. When the FT substitution by FCP increased, cookies became darker, with higher dietary fiber, moisture, ash, magnesium, manganese, and copper contents, and lower carbohydrates, proteins, lipids, and energetic value contents. In terms of acceptability, cookies with up to 25% of FT substitution by FCP do not differ from those without FCP (control), reaching 52% of consumer purchase intention and 5.2% of ingredients cost reduction, as compared to control. Therefore, up to 25% FT replacement by FCP, for this kind of cookie, is a feasible option, with functional, economical, and ecological benefits. KEY-WORDS: Caryocar brasiliense Camb.; residue; product development; dietary fiber. O objetivo deste estudo foi avaliar a qualidade de biscoitos tipo cookie, formulados com diferentes níveis de farinha de casca de pequi (FCP), em substitui o à farinha de trigo (FT). Utilizou-se um delineamento inteiramente casualizado, com controle mais quatro tratamentos (12,5%; 25%; 37,5%; e
Ergonomics in prehospital environment: risk factor for health workers at service of mobile emergency attendance
Bartolomeu José dos Santos Júnior, Cibele de Lima Souza Silveira, Ednaldo Cavalcante de Araújo
Revista de Enfermagem UFPE On Line , 2009,
Abstract: Objective: to examine the working conditions and ergonomics for health workers in the Service of Mobile Emergency Attendance (SMEA)/Recife, Pernambuco, Brazil. Methods: this about a descriptive study, cross-sectional, from quantitative approach. The population is composed by the nursing staff and the sample will be defined according the following eligibility criteria: 1) all employees of the nursing team involved in Service of Mobile Emergency Attendance (SMEA)/Recife, Pernambuco, Brazil; 2) to be both gender; 3) all the workers with experience at least one year of work in that institution. It will applied the standard questionnaire checklist for data collection. Expected results: to contribute to further studies can be made to the understanding of relations between labor and health-disease process.
Work conditions and ergonomic factors of health risks to the nursing team of the Mobile Emergency Care - SAMU in Recife-PE city
Bartolomeu José dos Santos Júnior,Cibele de Lima Souza Silveira,Ednaldo Cavalcante de Araújo
Revista de Enfermagem UFPE On Line , 2010,
Abstract: Objective: to analyze the work conditions and ergonomic as factors of risks to health of the nursing team from Mobile Service Emergency SAMU/Recife-PE. Methods: this is about a descriptive and exploratory study, from quantitative approach. Population was performed from the nurse team. For data collection was applied a questionnaire of 37 questions, from July to September 2009. Data analysis was supported by the Epi-Info, with the presentation of the results in tables. This study has been approved by the Committee of Ethics in Research of the Federal University of Pernambuco (protocol number 064/09). Results: 61.9% of the sample had mental fatigue and muscle 65.1%; 73% said they received no guidance on ergonomics; when asked what could be done for the prevention of occupational illnesses related to the performance of its activities, 35% said the stretch, 11% continuing education, 16% of the exercise, 14% of gym work and 24% did not know. Regarding the gym work, 82.5% heard and this total, 92.1% think that could help in the prevention of musculoskeletal pain and would like the gym work in the service. Conclusion: The activity of the professional nurse who works in the SAMU is stressful to the musculoskeletal system, especially in regions of the spine, back, shoulders and neck.
Energy Harvesting Based on Magnetic Dispersion for Three-Phase Power System  [PDF]
Tarcisio Oliveira de Moraes Júnior, Yuri Percy Molina Rodriguez, Ewerton Cleudson de Sousa Melo, Maraiza Prescila dos Santos, Cleonilson Protásio de Souza
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.53B005
Abstract:

This paper presents a comparative study on Magnetic-Dispersion based Energy Harvesting Systems (MD-EHS) on electrical conductors that supply power for a three-phase AC motor. It introduces two MD-EHS which are based on magnetic cores of different material, named, nanocrystalline, ferrite and iron powder. The first one consists of harvesting energy from magnetic flux through three symmetrical magnetic cores installed on each power conductors of a three-phase AC motor. The second one consists of a single magnetic core for harvesting energy from magnetic flux of only one of these conductors. Both ones have an AC/DC converter and a variable resistor based load. Experimental results have agreed with the theoretical analysis and show that the first proposed MD-EHS is capable of supplying 14 times more energy than the second MD-EHS, considering nanocrystalline cores and phase current of 3 A, and 7.5 times more energy, considering ferrite cores and phase current of 9 A. Such energy can be applied to various low-power devices, especially in wireless sensor network.

Preven??o da transmiss?o vertical do vírus da imunodeficiência humana: análise da ades?o às medidas de profilaxia em uma maternidade de referência em Fortaleza, Ceará, Brasil
Cavalcante, Maria do Socorro;Silveira, ?ngela Cristina Bonfim da;Ribeiro, Ana Maria de Sousa;Ramos Júnior, Alberto Novaes;
Revista Brasileira de Saúde Materno Infantil , 2008, DOI: 10.1590/S1519-38292008000400013
Abstract: objectives: to analyze the adherence to prophylactic measures implemented in pregnant women for reduction of vertical hiv transmission in this reference maternity in the city of fortaleza, state of ceará, brazil. methods: cross sectional study, with descriptive and analytical components. included were all of the pregnant hiv infected women that attended the maternity during january 2000 to august 2004. results: one hundred and ten pregnant hiv infected women were studied and 102 (92.7%) informed to have frequented prenatal service. sixty three of them (57.3%) were informed about their serological status during prenatal, 39 (35.5%) knew they had aids before becoming pregnant. it was identified a high percentage of interventions for reduction of hiv vertical transmission, not having statistically difference among women that knew of their serological status the ones that didn't. it is needed to be emphasized that in 86 (78.1%) cases the adherence to these interventions was considered completed. conclusions: the high adherence to conducts for reducing vertical hiv transmission observed in this study reveals the viability of the application of those actions in fortaleza, nonetheless the specific conditions in this reference hospital doesn't apply to all situations in other services in fortaleza.
Bayesian estimation of (co)variance components for growth traits in tabapu cattle Estima o bayesiana de componentes de (co)variancia de características ponderais na ra a tabapu
Severino Cavalcante de Sousa Júnior,Francisco Ribeiro de Araújo Neto,Henrique Nunes de Oliveira,Dimas Oliveira Santos
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: Among the features of interest to the animal breeding, that can be measured repeatedly throughout an individual's life, are among other, growth characteristics, which are characteristic features called longitudinal or repeated. It was used 8193 Tabapu breed records of animal weight raised in 25 farms distributed in the states of Bahia, Alagoas, Sergipe, Minas Gerais and S o Paulo and born between the years of 1975 and 2001. Aiming to estimate the (co) variance and genetic parameters for weights at 120 (W120), 365 (W365), 450 (W450) e 550 (W550) days old. Variance components were estimated in a Bayesian context considering a multi-trait animal model with fixed effects for contemporary groups and ages of the mother and the animal. The random effects were considered direct genetic and maternal and maternal permanent environment and error. The effects mothers were included in the model only for W120 and W365. The direct heritability were 0.31, 0.38, 0.33 and 0.29 for W120, W365, W450 and W550, respectively. The fractions of genetic and maternal permanent environment effects on phenotypic variances were 0.06 and 0.01, 0.03 and 0.01 for W120 and W365. Entre as características de interesse para o melhoramento genético animal que podem ser mensuradas repetidamente ao longo da vida do indivíduo, encontram-se, entre outras, as características de crescimento, que s o denominadas características repetidas ou longitudinais. Foram utilizados 8.193 registros de peso de animais da ra a Tabapu criados em 25 fazendas distribuídas nos estados da Bahia, Alagoas, Sergipe, Minas Gerais e S o Paulo, nascidos entre os anos de 1975 e 2001, com o objetivo de estimar componentes de (co)variancia e parametros genéticos para pesos aos 120 (P120), 365 (P365), 450 (P450) e 550 (P550) dias de idade. Os componentes de variancia foram mensurados em um contexto bayesiano, considerando um modelo animal multi-característica com efeitos fixos de grupos de contemporaneos e as idades da m e e do animal. Os efeitos aleatórios considerados foram o genético direto e materno e o de ambiente permanente materno e o erro. Os efeitos maternos foram incluídos no modelo somente para P120 e P365. As herdabilidades diretas foram 0,31; 0,38; 0,33 e 0,29 para P120, P365, P450 e P550, respectivamente. As fra es dos efeitos genéticos e de ambiente permanente materno na variancia fenotípica foram: 0,06 e 0,01; 0,03 e 0,01 para P120 e P365.
Page 1 /317806
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.