oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 1 )

2019 ( 45 )

2018 ( 75 )

2017 ( 44 )

Custom range...

Search Results: 1 - 10 of 39267 matches for " Cláudio Luiz Dias Leal "
All listed articles are free for downloading (OA Articles)
Page 1 /39267
Display every page Item
Aproveitamento da cinza do baga o de cana-de a úcar como fíler em concreto asfáltico
Cláudio Luiz Dias Leal,Protasio Ferreira e Castro
Vértices , 2010,
Abstract: A gera o, o manuseio e o armazenamento seguro de resíduos sólidos têm se tornado uma grande preocupa o no Brasil. O principal objetivo desse estudo foi investigar a potencialidade do uso da cinza do baga o de cana de a úcar como fíler em misturas asfálticas. O comportamento das misturas foi caracterizado por meio de um programa experimental utilizando diferentes teores de resíduo e os ensaios de estabilidade Marshall, tra o indireta, módulo de resiliência e velocidade do pulso ultra-s nico. A análise estatística aplicada aos resultados dos ensaios mostrou que a cinza do baga o de cana pode ser usada como fíler em misturas betuminosas. Applying sugar cane pulp ashes as filler to asphalt concrete The generation, handling and safe disposal of solid wastes has become a major concern in Brazil. The primary objective of this study was to investigate the feasibility of using sugar cane pulp ashes as filler to asphalt mixtures. The mixture’s behavior was characterized through an experimental program consisting of different industrial waste content and several test methods: Marshall stability, diametral indirect tensile test, resilient modulus and ultrasonic pulse velocity. Statistical analyses applied to the test results showed that sugar cane pulp ashes can be used as filler in bituminous mixes.
O APROVEITAMENTO DA CINZA DE CALDEIRA NA CONSTRU O CIVIL
Cláudia Barroso Vasconcellos,Cláudio Luiz Dias Leal,Marcelo Pereira Fran?a,Protasio Ferreira e Castro
Vértices , 2010,
Abstract: Esse trabalho apresenta um estudo do potencial de aproveitamento de cinza de caldeira. No Brasil, o volume desse resíduo industrial tem aumentado significativamente devido à implementa o da política de fontes geradoras de energia elétrica, que enfatiza o uso de usinas termelétricas e mais especificamente a aplica o do gás natural. O programa experimental foi desenvolvido por meio da aplica o de cinza em misturas asfálticas e em argamassas de cimento Portland. A análise estatística dos resultados dos ensaios permite afirmar que a cinza de caldeira possui potencial para ser aplicada em misturas de cimento asfáltico de petróleo e de cimento Portland.
A popula??o Xakriabá, Minas Gerais: aspectos demográficos, políticos, sociais e econ?micos
Pena, Jo?o Luiz;Heller, Leo;Dias Júnior, Cláudio Santiago;
Revista Brasileira de Estudos de Popula??o , 2009, DOI: 10.1590/S0102-30982009000100005
Abstract: this paper presents a demographic characterization of the xakriabá people and a description of political, social and economical aspects related to this population (2000-2003). comparisons of these data with the overall indian and brazilian populations are also made. the information used here indicated high levels of mortality, above brazilian levels nation-wide. it also shows high rates of infant mortality, especially among children under one year of age. studies aimed at understanding the reality of these specific people are relevant because they can contribute to the promotion of health equity in this population and their overall well-being.
Condi??o funcional, for?a muscular respiratória e qualidade de vida em pacientes cirróticos
Galant, Lucas H.;Forgiarini Junior, Luiz A.;Dias, Alexandre S.;Marroni, Cláudio A.;
Brazilian Journal of Physical Therapy , 2012, DOI: 10.1590/S1413-35552012000100006
Abstract: background: liver diseases are responsible for metabolic disorders and loss of muscle mass and function that affect functional status and quality of life (qol). objective: to compare exercise capacity, respiratory muscle strength, and qol in liver transplant candidates with cirrhosis of the following etiologies: hepatitis c virus (hcv), hepatitis b virus (hbv), and alcoholic cirrhosis (ac). methods: cross-sectional study comprising 86 patients divided into three groups: hcv (40 patients), hbv (14 patients), and ac (32 patients). patients were evaluated using the six-minute walk test (6mwt), manometry, and the qol questionnaire sf-36. results: the ac group showed the lowest performance in the 6mwt (meters) compared to the hbv and hcv groups (373.50±50.48, 464.16±32, and 475.94±27.84, respectively, p=0.001). in the domains of the sf-36, the ac group had lower scores for functional capacity and physical limitations when compared to the hbv and hcv groups (p=0.001). in the comparison of respiratory muscle strength, the ac group had lower mip (cmh2o) compared to the hbv and hcv groups (-65.54±11.28, -71.61±6.96, -82.44±13.71, respectively, p=0.001). the mep (cmh2o) in the ac group was also lower than in the hbv and hcv groups (65.13±10.74, 82.44±13.87, 83.44±12.20, respectively, p=0.001). conclusion: the ac group showed worse exercise capacity, respiratory muscle strength, and qol compared to patients with hcv and hbv.
Performance comparison between broilers positive and negative for antibodies against the chicken anemia virus
Rubin, Lauricio Librelotto;ávila, Luiz Ant?nio Faccenda de;Ribeiro, Andréa Machado Leal;Wald, Vera;Canal, Cláudio Wageck;
Brazilian Journal of Microbiology , 2003, DOI: 10.1590/S1517-83822003000500030
Abstract: the chicken anemia virus (cav) is present in virtually every country investigated, brazil including. the aim of this study was to determine what the difference in performance is between positive (progeny of breeders vaccinated or with natural infection) and negative broilers to the presence of antibodies against the cav in currently intensive raising systems. as a result, it was observed that negative broilers were significantly heavier than positive broilers. negative males had a final weight 5.43% higher than positive males. there was no significant difference among different treatments in relation to parameters as mortality and feeding conversion. these study indicated that the presence of antibodies against cav in broilers - may it be through vaccination or natural infection of breeders - did not generate progeny with superior performance under the tested raising conditions.
O mercado de planos e seguros de saúde no Brasil: uma abordagem exploratória sobre a estratifica??o das demandas segundo a PNAD 2003
Bahia,Ligia; Luiz,Ronir Raggio; Salm,Cláudio; Costa,Antonio José Leal; Kale,Pauline Lorena; Cavalcanti,Maria de Lourdes T.;
Ciência & Saúde Coletiva , 2006, DOI: 10.1590/S1413-81232006000400017
Abstract: several studies based on the 1998 pnad health supplement data have shown significant differences in socioeconomic standards, access to and use of health services among population segments covered or not by health plans. seeking to improve our knowledge on the structure and dynamics of the market of health plans and insurances in brazil, we sought first to identify and then to highlight the different demands. to this effect, we conceived a typology of health plans on the basis of the institutional origin of the demands and on the relation between insurance and health plan holders and their dependents for three major categories: private employer plans, public employer plans and individual plans. age, socioeconomic patterns and health conditions vary according to different health plan profiles, suggesting distinct patterns of demands, markedly between private employer and individual plans.
Efficiency analysis of Brazilian public ports management concerning to the role of port authorities [paper in Portuguese]
Luiz Cláudio Say?o Cortez,Lucas Rebello de Oliveira,Eduardo Ferraz Martins,Igor Rosa Dias de Jesus
Journal of Transport Literature , 2013,
Abstract: This article aims to make an efficiency evaluation of Brazilian port authorities in performing their functions, from 2007 to 2009, using Data Envelopment Analysis (DEA). It is considered as inputs: quantity of employees, operational costs, investments; and as outputs: billing and handled cargo. The used DEA model is output-oriented and uses for its analysis scale efficiency and cross efficiency evaluation. Eight port authorities are considered in three years, resulting in 24 DMUs. This study allows us to evaluate if the Docks Companies operations are being efficient from the operational point of view, as well as to compare the performance between the port authorities, in order to identify which management elements should be turned to the achievement of a satisfactory performance. On a consolidated basis, we could notice that Docks Company CODESP (S o Paulo) was the more efficient company in the period, followed by CODOMAR (Maranh o) and CDRJ (Rio de Janeiro).
Fecundidade das mulheres autodeclaradas indígenas residentes em Minas Gerais, Brasil: uma análise a partir do Censo Demográfico 2000
Dias Júnior, Cláudio Santiago;Verona, Ana Paula de Andrade;Pena, Jo?o Luiz;Machado-Coelho, George Luiz Lins;
Cadernos de Saúde Pública , 2008, DOI: 10.1590/S0102-311X2008001100003
Abstract: indigenous populations living in villages in brazil have presented high total fertility rates (tfr) that have increased over time in some cases. meanwhile, data from the brazilian institute of geography and statistics (ibge) or national census bureau show a decline in the tfr for the total self-declared indigenous population (combining urban, rural, and specific rural residence). the current study uses data from the 2000 population census to describe and compare the structure and level of period fertility for the cohort of self-declared indigenous women living in the state of minas gerais. we calculated age-specific fertility rates (asfr), the period tfr for 2000, and the cohort tfr for women 50 years and older. according to the findings, self-declared indigenous women living in minas gerais experienced high fertility in the past, regardless of their place of residence. in conclusion, the 2000 population census is an important data source for studies on indigenous populations in brazil, based on the high coverage and wealth of information.
Growth of indigenous population in Minas Gerais: analysis of the influence of demographic dynamics and racial-ethnic reclassification, using census data from 1991-2000
Cláudio Santiago Dias Júnior,Ana Paula de Andrade Verona,Jo?o Luiz Pena,George Luiz Lins Machado-Coelho
Revista Brasileira em Promo??o da Saúde , 2009,
Abstract: Objective: To analyze how demographic dynamics and racial-ethnic reclassification may have contributed to the growth of indigenous population residing in Minas Gerais in the period between 1991 and 2000. Methods: An epidemiological study using secondary data from Demographic Censuses from the period of 1991 to 2000. The impact of the increase was determined by the calculation of vegetative growth, migration and racial-ethnic reclassification within this increment. Results: There was a growth rate of the self-declared indigenous population of 26% per year, with an increase of 800% in the number of indigenous people. This was evidenced from the migration of mulatto population to indigenous. The migratory process to the state increased in 2.7% the studied population and there was an increment in the urbanization process from 66% to 78%. Conclusion: The results show that in Minas Gerais population dynamics has little influence in indigenous population growth and racial-ethnic reclassification is the main reason for explaining this phenomenon.
Avalia??o da rela??o seca/produtividade agrícola em cenário de mudan?as climáticas
Santos, Roziane Sobreira dos;Costa, Luiz Cláudio;Sediyama, Gilberto Chohaku;Leal, Brauliro Gon?alves;Oliveira, Robson Alves de;Justino, Flávio Barbosa;
Revista Brasileira de Meteorologia , 2011, DOI: 10.1590/S0102-77862011000200014
Abstract: this study investigates the relationship between crop yields and drought in the state of minas gerais for of climate change scenarios. climate changes have warned due to possible increases in meteorological extremes worldwide and the uncertainties on how the climatic events might change the environment and affect world agricultural production in the future. the echam5/mpi-om model daily weather data projected for the 2008 to 2020 period, based on the a1b scenario, was used. the methodology of the agroecological zone (aez) to estimate the future maize yield was used. the index of the z palmer drought and the estimated productivity by aez methodology were compared by a linear correlation model. the performance of the models was verified by the statistic parameters: coefficient of determination (r2), the root mean square error (rmse), mean absolute error (mae) and willmott agreement index (d). the results of the willmott agreement index ranged from 0.48 to 0.90 and r2 presented low values. however, the productivity estimated by aez methodology projected greater maize yield losses due to water supplies limitations for the agricultural years of 2008/2009, 2009/2010, 2014/2015 and 2018/2019 for the mesoregions of triangulo/alto paranaíba, central mineira and jequitinhonha.
Page 1 /39267
Display every page Item


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