01.1 - Graduação (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2
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Resultados da Pesquisa
Item Setor sucroalcooleiro em Pernambuco: uma análise sobre a produção de etanol entre 2000 e 2022(2024-03-07) Silva, Antônio Duarte Marques Oliveira da; Melo, André de Souza; http://lattes.cnpq.br/8808755622712441; http://lattes.cnpq.br/0193793183041821As an alternative to remedy the impacts caused by the oil shocks of the 1970s, PROALCOOL was a program that was successful in promoting the biofuel ethanol, however, since deregulation, the sugar and alcohol sector has gone through several phases of growth and declines in production, influenced due to various political and market factors. The general objective of this work is to understand and analyze the gross production of ethanol in Pernambuco between 2000 and 2022. To this end, the specific objectives were to describe the historical context of ethanol production in Pernambuco and Brazil, to identify the main factors that influenced production throughout throughout the analyzed series and understand the relationship between price, sales and productivity with ethanol production. As a methodology used, a bibliographical review, graphical analyzes and descriptive statistics were carried out. The research results showed that ethanol production in Pernambuco over the last few decades has been influenced by several factors and that despite the measures adopted by the government to stimulate the sector in recent years, it still faces challenges in ensuring continuous and competitive growth. to consumers. Justifying that it is essential to understand the policies adopted for ethanol and their impact on the market and society. The historical analysis of these policies and their results can contribute to the development of new strategies for the future.Item Uniformidade de vazão, índice de vegetação normalizada e produtividade da cana-de-açúcar sob irrigação por gotejamento(2022-06-06) Silva Júnior, José Santino da; Silva, Manassés Mesquita da; http://lattes.cnpq.br/2249840331584869; http://lattes.cnpq.br/7667530223951004Given the importance of irrigating agricultural crops, it is necessary to determine the uniformity of water distribution to ensure the quality of irrigation, frequent monitoring of irrigated areas must be carried out in order to observe the dynamics and conditions of cultivation. In view of this, the present work was developed with the objective of evaluating the quality of irrigation of sugarcane at Usina Vale Verde - Baia Formosa. The study was carried out between February 2021 and February 2022, at Fazenda Pedrosa, belonging to Usina Vale Verde and located in the municipality of Bahia Formosa-RN. A total area of 15 ha was used, subdivided into five sectors of 3 ha each. At the end of the sugarcane cycle, for each of the sectors, the irrigation system flow uniformity coefficient (CUD) and crop productivity were determined. In addition, in six seasons throughout the crop development, the mapping of the Normalized Difference Vegetation Index (NDVI) of the soil cover was carried out, through the QGIS software, using Sentinel-2 satellite images made available by the spatial database of the United States Geological Survey (USGS). The NDVI determination was performed by the ratio between the reflectance difference of the near infrared (band 04) and red (band 08) bands, under their sum, the NDVI images were classified according to the vegetation cover density in phytophysiognomies. After evaluating the data obtained in the present study, it was found that the CUD values have a direct correlation with the productivity of the place, as well as the NDVI images showed higher values in the areas of greater CUD and productivity, thus, the CUD and NDVI are important variables as a source of information in decision making in improving irrigation quality.Item Simulação de produtividade em função de diferentes níveis de uniformidade para cultura do feijão carioca com irrigação localizada(2023-04-13) Batista, Arthus Douglas; Mélo, Ralini Ferreira de; http://lattes.cnpq.br/4296426234246190; http://lattes.cnpq.br/2013424295271323Water is one of the main factors for agricultural production and one of the most used parameters to evaluate the irrigation system is the uniformity of the application of the water layer over the irrigated area. This work was carried out with the objective of evaluating the productivity of the common bean (Phaseolus vulgaris L.) cv. Carioca due to different levels of uniformity simulated using Solver, which is a software for mathematical programming integrated into an electronic spreadsheet (Excel). The Keller & Karmeli (1975) model was used as a reference for simulations of the water depths of a system with drip irrigation and the productivity was estimated according to the methodology proposed by Figueredo et al. (2008). As a result, the highest mean depth value (568.1 mm) and lowest productivity (1991.3 kg ha-1) of the common bean crop were obtained for the system that presented a CUC of 65%. On the other hand, the lowest mean depth value (416.4 mm) and highest productivity (2981.1 kg ha-1) were obtained for a system with 95% CUC. In a direct comparison, a 26.7% reduction in the mean blade value and a 49.71% increase in productivity were noted, thus confirming that a system with greater uniformity is more efficient.Item Caracterização morfológica e produção de matéria seca de diferentes leguminosas nativas(2021-11-24) Santos, André Evaristo dos; Santos, Mércia Virginia Ferreira dos; http://lattes.cnpq.br/9565465836878202; http://lattes.cnpq.br/3609738904440535Brazil is extremely rich in natural resources, being the cradle of plant species of forage interest. As national animal production occurs almost entirely in pastoral systems, which is the cheapest form of animal feed, it is necessary to study forage species adapted to different edaphoclimatic conditions, as well as persistent ones to contribute to the sustainability of production systems animals to pasture. Desmanthus spp and Stylosanthes spp are legumes that occur spontaneously in Northeastern Brazil, with desirable characteristics for cultivation and feeding of ruminants. The objective was to evaluate the morphological and productive characteristics of accessions of Stylosanthes spp and Desmanthus spp from different locations, which make up the Active Germplasm Bank (BAG) of the Federal Rural University of Pernambuco (UFRPE). The plants were cultivated in a greenhouse at the Department of Animal Science and transferred to the BAG / UFRPE, located in the Experimental Station of Sugarcane do Carpina, North wood zone of the state at latitude 7º, 51 '04' 'S, longitude 35º, 14 '27' 'The altitude of 180m in 2017. Variance was observed in all morphological and productive characteristics studied, both for Desmanthus genotypes and for Stylosanthes genotypes, showing the variability between materials and the possibility of being selected superior to the future.Item Espaço x produtividade: análise de fluxo produtivo, layout e ergonomia em um restaurante do Recife(2019) Oliveira, Rafaela Celso de; Calabria, Ericka Maria de Melo Rocha; http://lattes.cnpq.br/3564220946174205