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Search Results: 1 - 10 of 660046 matches for " Paulo César T. de;Wanderley Júnior "
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Caracteriza??o morfológica de genótipos de coentro
Melo, Roberto de A;Menezes, Dimas;Resende, Luciane V;Wanderley Júnior, Luiz Jorge da G;Melo, Paulo César T de;Santos, Venézio Felipe dos;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000300021
Abstract: few coriander cultivars (coriandrum sativum l.) are available to producers and, in some regions, are grown genotypes of unknown origin, kept by the growers themselves. to conserve such traditional crops it is necessary to collect, save, and characterize them. thus, this study was to determine morphological characters to differentiate coriander genotypes aiming the registration of cultivars. two trials were carried out, and the experimental design used in both was in completely randomized blocks with five replications. americano, asteca, palmeira, português, santo, superia, tabocas, tapacurá, and verd?o cultivars, and the line htv-9299 were characterized for seedling, leaflets, leaves, fruits, and flowers. the data were subjected to a univariate anova. the fruits of cv. palmeira exhibited greater size and mass. as regards the presence of anthocyanins in seedlings and plants, cv. americano showed the lowest intensity or slight pigmentation while cv. tabocas had the highest pigmentation. the cultivars americano, palmeira, asteca, verd?o, and tabocas and the line htv-9299 displayed higher number of basal leaves, however, the genotypes that produced larger amount of mass per plant were tabocas, palmeira, verd?o, htv-9299, and tapacurá. the green tone of leaflets showed differences among cultivars. so, cv. americanos leaflets exhibited a light green, slightly yellowish color, htv-9299 green, and tabocas dark green. the morphological traits with higher discriminatory power for the group of the ten evaluated cultivars were: size and weight of fruits; presence or absence of anthocyanin in seedlings and plants; number of basal leaves; length of the fifth leaf; size and color of leaflets; number of days to bolting initiation, and opening of the first flower, and plant fresh mass.
Desempenho de genótipos de coentro em Areia
Oliveira, Ademar P de;Melo, Paulo César T. de;Wanderley Júnior, Luiz Jorge da G;Alves, Anarlete U;Moura, Macio F de;Oliveira, Arnaldo Nonato P de;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000200024
Abstract: seven coriander genotypes were evaluated (lines htv 9299, htv 7299, htv 0699, htv 0999,htv 0199 and cvs. verd?o and palmeira), in areia county, paraiba state, brazil, from may to july of 2003 in randomized blocks in four replications. verd?o (5,0 kg m-2) and palmeira (4,3 kg m-2) cultivars and the lines htv 9299 (4,4 kg m-2), htv 7299 (4,5 kg m-2) and htv 0999 (4,3 kg m-2), exhibited the greatest yield of green mass (gm), while the line htv 0199, with 2.9 kg m-2 of gm, showed the lowest yield. lines htv 7299 (0.73) and htv 0199 (0.81) presented the largest values for the ratio leaves:stalks. verd?o and palmeira cultivars and lines htv 7299, htv 0999, htv 0699 and 9299 persented 65; 58; 35; 29; 40 and 59%, respectively, of plant bolting (pb) at 42 days after sowing date, while line htv 0199 presented only 11%. line htv 7299 might be an alternative for coriander cropping in areia.
Desempenho agroecon?mico da cenoura adubada com jitirana (Merremia aegyptia)
Oliveira, Mychelle Karla T de;Bezerra Neto, Francisco;Barros Júnior, Aurélio P;Moreira, Joserlan N;Sá, José Roberto de;Linhares, Paulo César F;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000300013
Abstract: the use of spontaneous plants of the caatinga biome as green manure is becoming a viable option for vegetable production in northeastern brazil. among these plants, the scarlet starglory is a spontaneous plant adapted to the climatic and soil conditions of the region, with high biomass production, rapid growth and low c/n ratio. we evaluated the agroeconomic performance of carrot (cv. brasília) depending on added amounts of scarlet starglory under the ground and of its moment of incorporation. the study was carried out in a rural area, in mossoró, rio grande do norte state, brazil, from september to december 2009. the experimental design was randomized complete blocks with the treatments arranged in a factorial scheme (4x4) + 1, with three replications. the first factor was comprised of amounts of scarlet starglory placed between the carrot rows, in a depth of 15 cm (5.4, 8.8, 12.2 and 15.6 t ha-1 on a dry basis) and the second factor, of the incorporation moment of this material (0, 15, 30 and 45 days after sowing carrots). the additional treatment (control) was 40 t ha-1 of cattle manure applied 10 days before sowing. we evaluated the marketable and total yield of roots, percentage of the different classes of roots and the economic indicators of gross income, net income, rate of return and profit margin. no significant interaction between the amounts of scarlet starglory under the soil and the incorporation moment was determined in any of the characteristics examined for carrot. the best agroeconomic performance of carrot cropping was obtained by adding 15.6 t ha-1 of scarlet starglory to the soil. the optimization of this performance was achieved with the incorporation moment of 26 days after carrot sowing.
Modelamento da perda de qualidade de sementes de soja, em fun??o das condi??es iniciais e da atmosfera no armazenamento
Afonso Júnior, Paulo César;Corrêa, Paulo César;Queiroz, Daniel Mar?al de;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2000, DOI: 10.1590/S1415-43662000000300016
Abstract: in order to predict the germination potencial of soybean seeds of the santa rosa variety during storage, an experiment was conducted, the seeds with initial moisture content of 0.333 (dry basis) were dried under an air temperature of 30 oc and relative humidity of 40% until the moisture content of 0.111; 0.176 and 0.250 (dry basis) were reached. the seeds were conditioned in paper bags and maintained under different storage temperatures (5, 10, 20 and 30 °c). the seed viability was evaluated just after drying and every 10 days, during 60 days, applying the standard germination test. in general, for the majority of the tests, the temperature and the moisture content affected the seed germination during the storage period. however, for the storage temperatures of 5 and 10 °c the seeds maintained the viability at satisfactory levels, independently of the moisture content of the product. the experimental results of germination were evaluated by adjusting the data to the exponential and probit mathematical models. the results obtained in this work lead to the conclusion that the temperature and the moisture content of the stored soybean seeds affect their germination and that the exponential model better fits the experimental data.
Desempenho da cadeia agroindustrial brasileira do tomate na década de 90
Melo, Paulo César T. de;Vilela, Nirlene J.;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000100033
Abstract: the performance of the brazilian tomato agroindustrial chain in the 90's was analysed. this was done taking into account the great socio-economic importance of this chain, principally its capacity to generate employment and create income in all sectors of the economy. the industrial processing of tomatoes alone generated $ 300 million in 1990 and ended the decade with us$ 500 million. tomato processing averaged one million tons in the last five years. however, comparing the production of 2000 in relation to 1990, in spite of the reduction of 45% of cultivated area (year 2000), the yield increased more than 93%. several factors contributed to the increase in productivity, as the concentration of the production in savannah areas which are favored by the soil and climate; adoption of advanced technologies where open pollination cultivars were substituted for high yielding hybrids. in addition, new technologies of production were introduced in the tomato production process, including more efficient irrigation techniques associated to new formulations of plant nutrition. another favorable factor was the more efficient interaction between the production process and industrial sectors. the importation of tomato paste was significantly reduced in 1999, giving space to the internal production. the industries innovated with the release of more practical packages and less concentrated products with greater added value, such as sauces.
Efeito da densidade de estocagem sobre o biofilme e o desempenho de pós-larvas do camar?o-rosa FarfantePenaeus paulensis cultivadas em gaiolas
Preto, Artur de Lima;Cavalli, Ronaldo;Pissetti, Tito;Abreu, Paulo César;Wasielesky Júnior, Wilson;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000600030
Abstract: the aim of this study was to analyze the influence of the stocking density in the survival and growth of farfantepenaeus paulensis postlarvae reared in cages during the nursery phase. additionally, we identified and quantified the main microorganisms present on the biofilm formed on artificial substrates placed inside the cages. we used 4 m2 bottom surface cages with artificial substrates and shrimp stocking densities of 100, 200, 300, 400 and 500pl25 m-2. the experiment lasted for 35 days. a negative relationship was observed between the increase of shrimp stocking density and their survival/growth rates. a preference for centric diatoms was also observed. the technical feasibility of culturing f. paulensis in cages was confirmed. the rearing of f. paulensis in nursery cages may be conduced in densities at also 400pl m-2, without more loss in survival and growth.
Technological readiness and students' satisfaction in distance learning mode: the case of a training program of a state government Prontitud tecnológica y satisfacción de alumnos en la modalidad a distancia: el caso de un programa de capacitación de un gobierno estadual Prontid o tecnológica e satisfa o de alunos na modalidade a distancia: o caso de um programa de capacita o de um governo estadual
Thiago Cavalcante Nascimento,Anatália Saraiva Martins Ramos,Paulo César Medeiros de Oliveira Júnior
Rege : Revista de Gest?o , 2011,
Abstract: The objective of this paper is to identify the determinants of student satisfaction with a training program for civil servants of a state government based on the technology readiness scale, TRI, developed by Parasuraman (2000). It is argued that public administration has undergone a series of modifications due to changes in political, economic and social contexts and that training of civil servants is a key factor for improving the performance of the state. Methodologically, we adopted a quantitative approach with a closed questionnaire for students that had graduated from the program. Data collection was made with an online survey during two months that resulted in 197 questionnaires with a sampling error of less than 5% and 95% confidence. We created three groups of heterogeneous individuals using the variables of technological readiness, which enabled us to verify that the determinants of satisfaction are different for each one of these groups. It was found conclusively that the technological readiness of individuals is a variable that can serve as moderator for the analysis of satisfaction levels of students that learned at a distance. El objetivo de este trabajo es identificar los factores determinantes de la satisfacción de los alumnos de un programa de capacitación de servidores de un gobierno estadual, basándose en la escala de prontitud tecnológica TRI desarrollada por Parasuraman (2000). Se argumenta que la administración pública está pasando por una serie de reformas decurrentes de mudanzas en los planos político, económico y social, y que la capacitación de los servidores públicos es un factor determinante para la mejoría de la performance del Estado. Metodológicamente, se adoptó una postura cuantitativa, aplicándose un cuestionario cerrado a alumnos que concluían el programa. La aplicación del instrumento de colecta de datos ocurrió mediante un survey on-line a lo largo de dos meses y resultó en 197 cuestionarios aplicados, que permitieron un error de muestreo inferior a 5% para 95% de confianza. Fueron creados, tres grupos heterogéneos de individuos mediante las variables de prontitud tecnológica, lo que permitió verificar que los factores determinantes de satisfacción son diferentes para cada uno de esos grupos. En conclusión, se verificó que la prontitud tecnológica de los individuos es una variable que puede servir de moderadora para el análisis de los niveles de satisfacción de alumnos en la modalidad a distancia. O objetivo deste trabalho é identificar os fatores determinantes da satisfa o dos alunos de um programa de capacita o de s
Modelagem matemática da atividade de água em polpa cítrica peletizada
Corrêa, Paulo C.;Afonso Júnior, Paulo C.;Andrade, Ednilton T. de;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2001, DOI: 10.1590/S1415-43662001000200018
Abstract: considering the importance of the citrus pulp in the formulation of elaborated rations and high nutritional quality for animal feed, this study had as its objective the determination of the water activity curves for peletized pulp citrus. the pulp was submitted to the desorption and adsorption under four conditions of temperature (20, 25, 30 and 35 oc) and four relative humidity (50, 60, 70 and 80%) with three replications, until it reached the equilibrium moisture content. the temperature and the relative humidity of the air (water activity) were controlled by means of an air conditioning unit "aminco-aire". the model of chen-clayton (with determined constants to describe the curves of equilibrium moisture content of the peletized citrus pulp) presented a satisfactory adjustment to the experimental data and the same may be used for other applications within limits of this experiment. during the implementation of the experiment, it was observed that in the treatments above 30 oc temperature and with water activity above 0.80, the samples presented fungus development.
Suicide among Physicians and Methodological Similarities of MEDLINE/PubMED and BVS/BIREME Open Access Bibliographic Databases: A Systematic Review with Metanalysis  [PDF]
Kécia Silva Damasceno, élcio de Sousa Barbosa, Jo?o Vitor Candido Pimentel, Antonio Gilvan Teixeira Júnior, Airton César Pinheiro de Meneses, Jucier Gon?alves Júnior, Danilo Ferreira de Sousa, Paulo Sérgio da Costa Lima, Iara Bezerra Sales, Antonio Souto Gouveia, Elisabethe Peres Biruel, Modesto Leite Rolim Neto, Vania Barbosa do Nascimento
Health (Health) , 2017, DOI: 10.4236/health.2017.92025
Abstract: Background: Suicide among physicians is a serious public health issue, with an extremely complex and multifactorial behavior. Aim: The aim of this study was to use the theme “Suicide among Physicians” to exemplify the analysis of methodological similarities between the scientific content available at MEDLINE and BVS databases, as scientific research tools. Methods: This is a systematic review with metanalysis. The following combinations of keywords were used for data search in the referred databases: “suicide” AND “physicians” AND “public heath”. Results: Three hundred and thirteen publications were identified, but only 16 studies were chosen. Great association was found between MEDLINE and BVS databases and the Odds Ratio regarding the theme: “Suicide among physicians”. Conclusions: Considering the similarities found in the utilization of the two analyzed databases, it was possible to identify that suicide among physicians is associated with the exercise of an important professional role in the society and in the workplace. With regard to scientific information, the p-value-obtained value (<0.05) seems to be statistically significant for the association between the suggested theme and the methodological similarities of the scientific information available in the analyzed databases. Thus, these open-access research tools are considered scientific reliable tools.
Reprodutibilidade no teste de uma repeti??o máxima no exercício de puxada pela frente para homens
Barros, Marcos André Pereira de;Sperandei, Sandro;Silveira Júnior, Paulo César Soter;Oliveira, Carlos Gomes de;
Revista Brasileira de Medicina do Esporte , 2008, DOI: 10.1590/S1517-86922008000400005
Abstract: objective: to verify the test-retest 1rm reproducibility in the lat pulldown exercise. methods: twenty-six healthy and physically actives men (25 ± 3 years, 76.8 ± 9.86 kg, 177 ± 5.3 cm, 12.5 ± 4.25 % body fat) signed an informed consent before participate in this study. the data was collected in two visits, 48-72 hours apart. during the first visit, anthropometric data was measured and progressive 1rm test was performed. for each attempt progressive loads of 5 kg were added until the fail, when the load was reduced in 3 kg and a last attempt was performed. a five-minute rest was allowed before each attempt. during the second visit, the 1rm test was repeated following the same protocol. the maximum loads of each day were compared by paired t-test to systematic error and limits of agreement technique to random error was employed. results: the mean error found was 2.9 ± 2.48 kg, being significantly different between days (p<0.00001). the error 95% limit of agreement was between -1.9 and 7.8 kg. conclusion: this study showed a tendency to an increase in the second-day load, which when planning and analyzing strength training studies using 1rm test.
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