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Search Results: 1 - 10 of 219992 matches for " PEDRO VIEIRA DE;SILVA "
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Indexes of trends of changes climatic in the Bahia State
Gildarte Barbosa Silva,Pedro Vieira de Azevedo
Engenharia Ambiental : Pesquisa e Tecnologia , 2008,
Abstract: This work had as objective to investigate the occurrence or absence of climatic changes in the period of 1970 the 2006, in some microregions of the state of the Bahia: Irecê, Oeste, Sudoeste and Baixo Médio S o Francisco, through indexes of trends of climatic changes with data of daily total precipitation and the daily temperatures maximum and minimum of the climatological stations of the respective regions. One used the indexes of detection of climatic changes suggested by (World Meteorological Organization WMO) calculated from the data of daily precipitation and the daily temperature through software RClimdex 1.9.0. It was observed that in the region of Irecê it had trend of reduction of the annual total precipitation and increase in the intensity of daily rains. In the region Oeste it had increase in the number of days with raised temperatures, increase in the daily minimum temperatures and increase in the intensity of rains. In the Sudeste region it had a trend of a small increase of the annual rain totals. In the region of the Baixo Médio S o Francisco it had increase the number of days with daily maximum temperature, reduction of daily rains and the annual total precipitation. This variation in the precipitation in the region can be attributed to the circulation of great scale, while the intensity of rains can have influence in the climatic variability.
Risco climático para o cultivo do algodoeiro na regi?o nordeste do Brasil
Azevedo, Pedro Vieira de;Silva, Fabrício Daniel dos Santos;
Revista Brasileira de Meteorologia , 2007, DOI: 10.1590/S0102-77862007000300012
Abstract: weekly mean values of solar radiation, rainfall, evapotranspiration and air temperature were used for establishing the lower climatic risk to the cotton crop. for irrigated fields, the potential crop yield was evaluated by the cumulative growth index (cgi), while for rain-fed conditions the climatic risk was determined by the water potential deficit (wpd). under irrigated and rain-fed conditions, the lower climatic risk occurs when cotton crop is sowing from 6 to 19 august and from the 44th (west region of bahia state) to the 19th week of the year. from the 1st week of the year, the most suitable date for cotton sowing start in the central region of piauí state, reaching maximum covering area of piauí, rio grande do norte, paraíba, pernambuco states and north of bahia state in the period between the 4th and the 8th week. in the south and west regions of bahia state, the lower climatic risk is reached by cotton crop when sowing in the 10th and 46th weeks. in the northeast coast, otherwise the cotton crop sowing is more suitable in the period from the 14th to 17th week, covering most of the coastal shore table lands from rio grande do norte to bahia states and almost the total areas of the alagoas and sergipe states.
Fatores associados ao aleitamento materno e desmame em Feira de Santana, Bahia
Vieira, Graciete Oliveira;Almeida, Jo?o Aprígio Guerra de;Silva, Luciana Rodrigues;Cabral, Vilma Alves;Santana Netto, Pedro Vieira;
Revista Brasileira de Saúde Materno Infantil , 2004, DOI: 10.1590/S1519-38292004000200004
Abstract: objectives: to determine breast feeding prevalence and weaning associated factors in under one year old children in feira de santana in 2001. methods: cross sectional study with the use of questionnaires addressing 2319 mothers in 44 vaccination facilities; (71%) selected by simple stratification. prevalence ratio was calculated with the following parameters: p < 0.05 considered significant with interval at 95%. results: breast feeding prevalence was 692% for under one year old children. exclusive breast feeding was higher for children not using pacifiers (49.4%) who had been breast-fed in the first days of life (40.4%). statistically significant variables with higher breast feeding chances were: babies who were breast-fed in the first day of life (p <0.001), mothers who were housewives (p <0.001), lower family income (p <0.001), multiparous mothers (p =0.03) and children not using pacifiers (p =0.000). conclusions: assistance activities to prevent weaning should especially focus on mothers holding jobs away from home, those with higher family incomes and who are primaparous. as for the children the focus should be on the ones not breast-fed in the first day of life and/or using pacifiers.
Bower ratio-energy balance associated errors in vineyards under dripping irrigation
Soares, José Monteiro;Azevedo, Pedro Vieira De;Silva, Bernado Barbosa Da;
Revista Brasileira de Meteorologia , 2007, DOI: 10.1590/S0102-77862007000200008
Abstract: this study was conducted at the bebedouro experimental station in petrolina-pe, brazil, to evaluate the errors associated to the application of the bowen ratio-energy balance in a 3-years old vineyard (vitis vinifera, l), grown in a trellis system, irrigated by dripping. the field measurements were taken during fruiting cycle (july to november, 2001), which was divided into eigth phenological stages. a micrometeorological tower was mounted in a grape-plants row in which sensors of net radiation, global solar radiation and wind speed were installed at about 1.0 m above the canopy. also in the tower, two psicometers were installed at two levels (0.5 and 1.8 m) above the vineyard canopy. two soil heat flux plates were buried at 0.02 m beneath the soil surface. all these sensors were connected to a data logger 21 x of campbell scientific inc., programmed for collecting data once every 5 seconds and storage averages for every 15 minutes. a comparative analysis were made among four bowen ratio accepting/rejecting rules, according to the methodology proposed by spano et al. (2000): br1 - values of b calculated by bowen (1926) equation; br2 - values of b as proposed by verma et al. (1978) equation; br3 - exclusion of the b values obtained as recommended by unland et al. (1996) and br4 - exclusion of the b values calculated as proposed by bowen (1926), out of the interval (-0.7 < b < 0.7). constacted that the unland et al. (1996) and soares (2003) accepting/rejection rules were better than that of verma et al. (1978) for attenuating the advective effects on the calculations of the bowen ratio. the comparison of br1 with br2 rules showed that the statistical errors reaching maximum values of 0.015. when comparing br1 with br3 e br4, the b errors reaching maximum values of 5.80 and 3.15, respectively.
Exigências hídricas da videira na Regi o do Submédio S o Francisco
Pesquisa Agropecuária Brasileira , 2000,
Abstract: O trabalho objetivou a estimativa das necessidades hídricas da videira (Vitis vinifera L.), cv. Itália, sob as condi es edafoclimáticas da Regi o do Submédio S o Francisco. A parte experimental foi conduzida no campo experimental de Bebedouro da Embrapa-Centro de Pesquisa Agropecuária do Trópico Semi-árido, no município de Petrolina, PE, durante o período de maio a agosto de 1996. A evapotranspira o da cultura foi determinada pelo método do balan o hídrico no solo, e a evapotranspira o de referência foi estimada pelo método de Penman, visando avaliar o comportamento do coeficiente de cultura (Kc) ao longo do ciclo da cultura. O parreiral, com cinco anos de idade, foi conduzido em sistema de latada a 2 m acima da superfície do solo, num espa amento de 4 m x 2 m e irrigado diariamente por gotejamento. O consumo hídrico diário máximo da cultura foi de 4,33 mm dia-1, totalizando 333,6 mm no período de observa es. Os valores de Kc variaram de 0,50 a 0,74. Determinou-se uma curva característica de Kc para o ciclo vegetativo da videira, a qual permite obter o Kc diário em fun o dos dias após a poda.
Parameters of quality of the woodworkability for determination of different usage of Eucalyptus wood
José Reinaldo Moreira da Silva,Marcelo Martins,Gabriel Marcos Vieira Oliveira,Pedro Paulo de Carvalho Braga
CERNE , 2009,
Abstract: Wood products used in the furniture industry need to have wood work machine surfaces quality optimized andpatronized. There are some classification methods to determine the wood quality, including visual inspection, determination of theadvance per tooth (fz), rugosimeter and laser or just touching. After the wood classification it is determined the usage of the differentwood qualities. The empiricism of the quality parameters in the indication of uses is not always ideal. This study determined the qualityof surfaces of Eucalyptus flat wood and defined appropriate uses for the different quality classes obtained. It had been worked machinedifferent Eucalyptus samples by planer with speed of advance of 3,6,15 and 30 m*min-1. To classify the wood, the determination of theadvance per tooth (calculated fz and measured fz) and the visual qualification (ASTMD 1666-87, 1995) were used. Later the woodusage according to quality was determined. The percentage of good samples decreased as the speed advance increased: reaching92%, 69%, 0% and 0% for advance speed of 3,6,15 and 30 m*min-1 respectively. Samples prepared at the speed of 3 and 6 m*min-1 were used to fabricate furniture, cabinet frame and thresholds. About 54%of samples prepared at the speed of 15 m*min-1 were usedfor railing, lambris, structural panels and flooring. About 46% and 100% of samples prepared at the speed of 15 and 30 m*min-1,respectively, were used to fabricate dividers, trusses, fences and, or, exterior gates.
Exigências hídricas da videira na Regi?o do Submédio S?o Francisco
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000000800008
Abstract: this study used data of a field experiment conducted at the bebedouro experimental base of the embrapa-centro de pesquisa agropecuária do trópico semi-árido in petrolina, pe, brazil, from may to august, 1996, during the growing period of a five-year-old table grape (vitis vinifera l.), italy cultivar. the plants were conducted in a two-meter above soil surface trellis system, four meters between rows by two meters between plants, and daily irrigated by trickling system. the crop evapotranspiration was determined by the soil water balance method, and the reference evapotranspiration was estimated by the method of penman, used to analyse the behaviour of the crop coefficient (kc) throughout the crop growing period. the maximum crop daily water use was 4.33 mm d-1 and the total water consumption was 333.6 mm for the whole growing period. the crop coefficient values varied from 0.50 to 0.74. a characteristic curve of kc for the table grape vegetative cycle was obtained which allows to obtain daily values of kc as a function of days after pruning.
ácaros predadores associados ao ácaro-da-erinose da lichia
Picoli, Pedro Renan Ferreira;Vieira, Marineide Rosa;Silva, Eloisa Aparecida da;Mota, Max Sander de Oliveira da;
Pesquisa Agropecuária Brasileira , 2010, DOI: 10.1590/S0100-204X2010001100003
Abstract: the objective of this work was to identify predator mites present in lychee plants and to correlate these species population development with the one of the litchi erineum mite, aceria litchii. the research was carried out in the county of casa branca, sp, brazil, with mature trees of the bengal variety, with 12 years old. from august 2008 to september 2009, leaves were collected monthly for the evaluation of a. litchii and predatory mites population levels. registers were made for 6,557 mites of the phytoseiidae family. the most abundant species was amblyseius compositus (42.6%), followed by phytoseius intermedius (31.2%), euseius concordis (14.1%), amblyseius herbicolus (8.8%) and iphiseiodes zuluagai (3.3%). population development of a. compositus, e. concordis and i. zuluagai was positively correlated with the one of aceria litchii, indicating a predation relationship.
Valderí de Castro Alcantara,Luís Fernando Silva Andrade,Raquel Santos Soares Menezes,Pedro Ivo Vieira Good God
Revista Eletr?nica de Ciência Administrativa - RECADM , 2010, DOI: 10.5329/621
Abstract: This article aims at the analysis of the organizational culture at enterprises located in two towns with distinct quantitative traits, Rio Paranaíba and Araxá. While the surveyed enterprises in Rio Paranaíba are mostly micro and small enterprises (86%), in Araxá there are mostly medium and large companies (53%). The overall objective is to verify if there are significant differences in organizational culture among these enterprises and if they can be explained by the organization size. The research was quantitative and instruments for data collection were a questionnaire and a scale for measuring organizational culture containing four dimensions: Hierarchical Distance Index (IDH), Individualism Index (INDI), Masculinity Index (MASC) and the Uncertainty Control Index (CINC). Tabulation and analysis of data were performed using the PASW Statistics 18, doing descriptive and inferential statistical procedures. Using a Reduction Factor (-21) the achieved indexes were classified into 5 intensity categories (from "very low" to "very high"). The Student t test for two means was performed, revealing significant differences in Hierarchical Distance and Individualism between Araxá and Rio Paranaíba enterprises (p <0.05). Keywords Organizational Culture; Dimensions of Organizational Culture; Araxá; Rio Paranaíba. RESUMO Este artigo tem por objetivo analisar a cultura organizacional de empresas localizadas em duas cidades mineiras com características quantitativas distintas, Rio Paranaíba e Araxá. Enquanto as empresas amostradas em Rio Paranaíba s o em sua maioria micro e pequenas empresas (86%), em Araxá s o médias e grandes empresas (53%). O objetivo geral é verificar se existe diferen a significativa na cultura organizacional entre estas empresas que podem ser explicadas por fatores inerentes ao tamanho da empresa. A pesquisa foi de natureza quantitativa e os instrumentos de coleta de dados consistiram na aplica o de um questionário e uma escala de mensura o da cultura organizacional contendo quatro dimens es: índice de Distancia Hierárquica (IDH), índice de Individualismo (IND
Survey of the prevalence of dental agenesias in patients between 7 and 16 years old
Grasielle Vieira Carneiro Borba,José de Camargo Borba Júnior,Key Fabiano Souza Pereira,Pedro Gregol da Silva
RGO : Revista Gaúcha de Odontologia , 2010,
Abstract: Objective: To assess the prevalence of dental agenesias in patients between the ages of 7 and 16 years, in the city of Campo Grande, Mato Grosso do Sul, from the analysis of panoramic radiographs from 2005 to 2007. Methods: A single operator analyzed 1,500 panoramic radiographs of patients, 750 being men and 750 women. Results: The data of the samples were statistically analyzed by the Chi-square and Student’s-t tests, and ANOVA with a level of significance of 5%, and the presence of agenesias was found in 40.6% of the patients. It was demonstrated that gender had no influence of gender on the occurrence of dental agenesia. The tooth that had a highest frequency of this type of anomaly was the third molar, followed by the second premolar (particularly the mandibular teeth), maxillary lateral incisor and maxillary first pre-molar. Although there was no statistically significant difference in comparison with other quadrants, the most frequent localization occurred in the mandible, in the mandibular right quadrant. Conclusion: A high prevalence of agenesias was found, with no statistically significant difference with regard to gender. There were no statistically significant differences between the means of agenesias with regard to the teeth. Whereas, no differences in the presence of the anomaly were found as regards location.
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