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Search Results: 1 - 10 of 235234 matches for " Francisco Carlos de Oliveira; "
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Family Farming, Land Use and Sustainability in the Amazon: Focusing on the Educational Dimension  [PDF]
Raimundo Cláudio Gomes Maciel, Francisco Diétima da Silva Bezerra, Francisco Carlos da Silveira Cavalcanti, Oleides Francisca de Oliveira, Pedro Gilberto Cavalcante Filho
Creative Education (CE) , 2018, DOI: 10.4236/ce.2018.91009
Abstract: The struggles?for land possession and deforestation were some results of the recent occupation process in the Amazon. Family farming was the target of land policies in the region, with recurring failures. Issues related to land governance and pro-poor policies have returned to the discussions, especially by the food production. This study aims to evaluate the relationship between the educational level, land access and sustainable land use among farmers in Acre State, Brazil, in the periods 1996/1997 and 2006/2007. Based on a sample, the methodology worked with variables related to the educational level, the access and the use of land, economic results and solid garbage. The results show that the higher educational level is directly related to the land access security and inversely proportional to sustainability in the land use type. Furthermore, production difficulties are leading to greater market dependence and, consequently, to increased generation of solid garbage, whose disposal may be better directed by improving the farmers’ education.
Flutua??es de Longo Prazo do Emprego no Brasil: uma Análise Alternativa de Co-integra??o
Oliveira, Carlos Wagner de Albuquerque;Carneiro, Francisco Galr?o;
Revista Brasileira de Economia , 2001, DOI: 10.1590/S0034-71402001000400003
Abstract: this paper analyzes employment fluctuations in the brazilian states vis-à-vis the aggregate employment for the country as a whole. the objective is to verify whether it is possible to establish a long run relationship between state employment and national employment (blanchard & katz, 1992; martin, 1997). the paper applies the traditional cointegration analysis methodology (engle & granger, 1987) and also the unrestrict error correction model, as proposed by pesaran et alii (1996). the results lend support to the general hypothesis which states that both state and national employment levels fluctuate along a common trend, but with permanent differentials in the long run.
Análise de dados de produ??o em um pomar jovem de laranjeiras Hamlin: II. classifica??o de dados espa?o-temporais
Parise, Francisco José de Oliveira;Vettorazzi, Carlos Alberto;
Revista Brasileira de Fruticultura , 2005, DOI: 10.1590/S0100-29452005000100014
Abstract: yield data of 1471 young hamlin trees in a commercial orchard were collected in two seasons, 2000/2001 and 2001/2002, to identify the patterns of spatial and temporal yield variability. fuzzy cluster analysis was used for interpreting the temporal and spatial variation. 52 trees were also selected for calculating the intra-class correlation of the spectral response extracted from high resolution multispectral digital aerial images. the results showed that some general patterns of season-to-season variation could be identified and related to spectral response of the trees. but, these patterns correspond to regions poorly spatially coherent.
Análise de dados de produ??o em um pomar jovem de laranjeiras Hamlin: I. Rela??es com a resposta espectral
Parise, Francisco José de Oliveira;Vettorazzi, Carlos Alberto;
Revista Brasileira de Fruticultura , 2005, DOI: 10.1590/S0100-29452005000100013
Abstract: yield data of 52 young hamlin trees in a commercial orchard were collected in two seasons, 2000/2001 and 2001/2002, along with spectral response data extracted from multispectral digital aerial images. the images were collected by a high resolution video camera in two distinct phenological stages: before and after the period of vegetative growth. ndvi, savi, red and infrared raw digital numbers data were selected for describing the relations. regression analyses showed significant relationships between yield and spectral response, however the values of r2 were low. taken multispectral digital images before or after the vegetative growth period were similar performed.
Flutua es de Longo Prazo do Emprego no Brasil: uma Análise Alternativa de Co-integra o
Oliveira Carlos Wagner de Albuquerque,Carneiro Francisco Galr?o
Revista Brasileira de Economia , 2001,
Abstract: Este artigo analisa as flutua es do emprego dos diversos estados brasileiros em rela o ao emprego nacional. O objetivo é verificar se é possível estabelecer uma rela o de longo prazo entre o emprego estadual e o emprego nacional (Blanchard & Katz, 1992; Martin, 1997). Para tanto, o artigo utiliza a metodologia tradicional de análise de co-integra o (Engle & Granger, 1987) e estima também um modelo de corre o de erros irrestrito, conforme proposto por Pesaran et alii (1996). Os resultados corroboram a hipótese de que as flutua es do emprego na maioria dos estados seguem uma trajetória comum em rela o ao emprego nacional, mas com diferenciais permanentes no longo prazo.
Evaluation of Visible Losses and Damage to the Ratoon Cane in the Mechanized Harvesting of Sugarcane for Different Displacement Speeds  [PDF]
Carmen Maria Coimbra Manh?es, Ricardo Ferreira Garcia, Delorme Correa Junior, Francisco Maurício Alves Francelino, Helenilson de Oliveira Francelino, Carlos Mair Fran?a Gon?alves dos Santos
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.520312
Abstract: This study aimed at quantitatively evaluating the sugarcane losses and the damage caused to the ratoon cane while using the Case IH A8800 harvester in different displacement speeds; it was conducted in the municipality of Campos dos Goytacazes, in Rio de Janeiro, Brazil. Three speeds were used as treatment (2 km·h-1, 3 km·h-1, and 4.5 km·h-1), and each treatment was composed of six rows of harvested ratoon, each with a length of 290 m. In order to evaluate the quantitative losses in t·ha-1 and the percentage of losses, the remaining sugarcane, left on the field after harvesting, was collected. The sampling frame was set to every 50 m, dividing the borders by 40 m; the measurement for each sampling area was of 20 m2, with five repetitions. In order to evaluate the damage caused to the ratoon canes, we chose a visual methodology to classify the damage degrees, ranging from one to four. There was no significant difference in losses when comparing different speeds. Therefore, it is more advantageous and economically viable to use the speed of 4.5 km·h-1, which collects more in less time.
Digestible lysine requirement of gilts with high genetic potential lean deposition, in carcass from 15 to 30 kg Exigência de lisina digestível de fêmeas suínas selecionadas para deposi o de carne magra, na carca a dos 15 aos 30 kg
Mariana Cruz Rossoni,Juarez Lopes Donzele,Francisco Carlos Oliveira Silva,Rita Flávia Miranda de Oliveira
Revista Brasileira de Saúde e Produ??o Animal , 2009,
Abstract: Fifty gilts were used, with initial weight of 15.11 + 1.34 kg, distributed in a random block experimental design, with five treatments (digestible lysine levels), five replicates and two animals per stall, which were considered one experimental unit. The criteria for the formation of the blocks were the animal initial weight. Treatments consisted in a basal diet with 19.41% of CP e 3,221 kcal of ME/kg, supplemented with L-lysine HCl, resulting on diets with 0.88, 0.98, 1.08, 1.18 and 1.28% of digestible lysine. Diets were supplemented with increasing levels of industrial aminoacids, resulting on diets with constant ratio of essential aminoacids and lysine, based on true digestible. There was no effect of levels of digestible lysine on daily feed intake and daily weight gain. A quadratic effect (P < 0.06) was observed on feed conversion that improved until an estimated level of 1.08% of digestible lysine, which corresponded to a digestible lysine intake of 11.60 g/day. The level of 1,08% of digestible lysine, which corresponded to a digestible lysine intake of 11.60 g/day, provided the best performance results for gilts and a high genetic potential for lean deposition from 15 to 30kg. Foram utilizadas 50 fêmeas suínas, com peso inicial de 15,11 + 1,34 kg, distribuídas em delineamento experimental de blocos ao acaso, com cinco tratamentos (níveis de lisina digestível), cinco repeti es e dois animais por baia, o que constituiu a unidade experimental. Como critério para forma o dos blocos, foi utilizado o peso dos animais. Os tratamentos corresponderam a uma ra o basal com 19,41% de PB e 3.221 kcal de EM/kg, suplementada com L-lisina HCl, resultando em ra es com 0,88, 0,98, 1,08, 1,18 e 1,28% de lisina digestível. As ra es foram suplementadas com níveis crescentes de aminoácidos industriais, resultando em ra es com rela es constantes entre os aminoácidos essenciais e a lisina, com base na digestibilidade verdadeira. N o foi observado efeito dos níveis de lisina digestível sobre o consumo de ra o e ganho de peso diário. Observou-se efeito quadrático (P<0,06) dos tratamentos sobre a convers o alimentar, que melhorou até o nível estimado de 1,08% de lisina digestível, correspondendo a um consumo de lisina digestível de 11,60 g/dia. O nível de 1,08% de lisina digestível, correspondente a um consumo de 11,60 g/dia de lisina digestível, proporcionou os melhores resultados de desempenho para fêmeas suínas de alto potencial genético, para deposi o de carne magra na carca a dos 15 aos 30 kg.
Susceptibility to nematodes of Santa Inês, Bergamácia and Texel ewes on northwest of Paraná Susceptibilidade a nematóides em ovelhas Santa Inês, Bergamácia e Texel no Noroeste do Paraná
Alexandre Agostinho Mexia,Francisco de Assis Fonseca de Macedo,Carlos Antonio Lopes de Oliveira,Marilice Zundt
Semina : Ciências Agrárias , 2011,
Abstract: Aiming to measure the resistance of ewes against gastrintestinal nematodes, an experiment was conducted at Centro de Pesquisa do Arenito, of the Universidade Estadual de Maringá, located in the city of Cidade Gaúcha, northwest of Paraná. Ninety- four Santa Inês, 14 Bergamácia and 25 Texel ewes were used. The flock remained on Tanzania (Panicum maximum cv. Jaq) pasture during the day, being withdrawn indoors, with suspended battened floor, during the night, when they were provided cassava bagasse. The ewes were monitored monthly and individually regarding the amount of endoparasites, through egg counting per gram of feces (EPG), and worms culture for identification of the species of those endoparasites. The Santa Inês ewes presented had lower (P ? 0,05) susceptibility comparing to the breeds Texel and Bergamácia, being the averages of EPG 838,58; 1240,31 and 1821,33 respectively. The highest percentage of endoparasites corresponded to the Haemonchus contortus, showing that this was the main type of endoparasites responsible for the EPG levels, followed by Trichostrongylus colubriformis. The counting of EPG of Santa Inês ewes showed a cubical behaviour over the year of observation, reaching the higher level in October, month in which the giving births happened. The Texel and Bergamácia ewes also showed cubical behaviour during the year, however, the higher EPG levels happened in the months of May, June and July. The Santa Inês ewes were the least prone to infection by endoparasites. Com o objetivo de verificar a susceptibilidade de ovelhas à infec o por nematóides gastrointestinais foi realizado experimento no Centro de Pesquisa do Arenito (UEM), no município de Cidade Gaúcha, noroeste do Paraná. Foram utilizadas 94 ovelhas Santa Inês, 14 Bergamácia e 25 Texel. Os rebanhos permaneceram em pastagem de Tanzania (Panicum maximum cv. Jaq) no período diurno, sendo recolhidos em instala es cobertas, com piso ripado suspenso, no período noturno, onde foi fornecido resíduo de fécula de mandioca. As ovelhas foram monitoradas mensal e individualmente quanto à carga endoparasitária, por meio de contagem de ovos por grama de fezes (OPG), e realizada cultura de larvas para identifica o das espécies de endoparasitos. As ovelhas Santa Inês apresentaram menor (P ? 0,05) susceptibilidade comparada às ra as Texel e Bergamácia, sendo as médias de OPG de 838,58; 1240,31 e 1821,33, respectivamente. A maior porcentagem de endoparasitos correspondeu à espécie Haemonchus contortus, demonstrando que este parasito foi o principal responsável pelos valores encontrados de OPG, se
Stability of soybean yield through different sowing periods
LIMA, WILMAR FERREIRA;TOLEDO, JOSé FRANCISCO FERRAZ DE;ARIAS, CARLOS ALBERTO ARRABAL;OLIVEIRA, MARCELO FERNANDES DE;
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000001100009
Abstract: soybean yield is highly affected by sowing period and there are significant productivity losses when sowings are done outward a relatively restricted period in many regions of brazil. breeding cultivars less sensitive to photoperiod and to temperature variations is desirable for adaptation to wider sowing period and wider latitude range and also make irrigated soybean cultivation possible during the fall-winter seasons in frost free regions. the possibility of selecting high yielding and stable lines for yield during various sowing periods was studied by analyzing the behavior of 100 non-selected advanced lines (f9 and f10), from each one of all possible biparental crosses involving the genotypes br85-29009, ocepar 8, ft-2, and br-13. experiments were set up in a completely randomized design with single-plant hill plots and received supplementary irrigation. sowing was on sept 27, oct 20, nov 17, and dec 17 in 1993/94 and sept 20, oct 20, nov 17, and dec 14 in 1994/95 at londrina, pr, brazil. procedures of regression analysis and minimum variance among planting date means were efficient for selecting stable lines during the four sowing seasons. it was possible to select stable and high yielding genotypes through the four sowing periods in all the crosses. no specific cross was clearly better to produce a greater number of stable genotypes.
Variabilidade sazonal e biossíntese de terpenóides presentes no óleo essencial de Lippia alba (Mill.) N. E. Brown (Verbenaceae)
Barros, Francisco Maikon Corrêa de;Zambarda, Eduardo de Oliveira;Heinzmann, Berta Maria;Mallmann, Carlos Augusto;
Química Nova , 2009, DOI: 10.1590/S0100-40422009000400007
Abstract: the essential oil of the leaves of lippia alba chemotype linalool-1,8-cineol was extracted by hidrodistillation at different seasons and analyzed by gc/ms. qualitative and quantitative variations in regard to the period of harvesting have been performed and the results were correlated with meteorological data. the essential oil yield varied from 0.33 to 0.67%. the chemical diversity of the constituents increased throughout the year, being 1,8-cineol and linalool the major components. possible biosynthetic routes of mono and sesquiterpenoids present in the essential oil are discussed.
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