990 resultados para Rendimento acadêmico


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The curimbata constitutes species of fish of wide distribution in the Neotropical area and high economic value. This work focused to evaluate processing yield and the chemical composition of the fillet in the male and female migratories and residents stocks of Prochilodus lineatus. The using the plotting was completely randomized by 4x2 factorial scheme, having as factors four stocks (one resident and three migratories) and two genders (male and female) with thirty replicates, considering each fish as an experimental unit. Each individual was submitted to the manual filleted and determination of the corporal composition (texts of moisture, crude protein, lipids, ashes and energy). They following parameters of yield had been evaluated (%): visceral entire fish (RPIE %); yield of boneless fillet (RFILE %) and processing yield of fillet with bone (RFILEC %). There was a significant difference (p<0.05) between the stocks and the studied samples. The biggest yield of boneless fillet were observed for the fish of the migrator stock I (45.77%). Males and females of the migrator stock I presented biggest fillet yield (46.79% and 43.93%, respectively), while the migrator III presented smaller yield (37.29% for males and 38.44% for females). The migratories stocks I, II and III presented values significantly smaller (p<0.05) of lipids level (0.98%; 2.01% and 1.97%, respectively) and an increase in the content of corporal protein in relation to the resident stock. It concluded that the male weighing 591g on average, belonging of the stock migrator I (captured in December), presented better thread yield and the stocks migratories are fish that has low fat tenor and high protein tenor.

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Residues generated from wood processing and transformation result in a considerable waste of raw material, which adds no value to such noble good. The purpose of this study was to determine the yield of sawn timber from Itaúba (Mezilaurus itauba) and Tauarí (Couratari guianensis) species. To this end, the volumetry and yield percentage of three logs from each species were classified and calculated. The Tauarí species resulted in yields for logs 1, 2 and 3, of 49.70% to 50.28% 39.20%, respectively; while for the Itaúba species, the yields for logs 1, 2 and 3 were of 51.03%; 50.29%; and 47.60%, respectively. It was not possible to verify whether the classification of log quality have influenced the yield.

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Incluye Bibliografía

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The ground cover is an agricultural practice that is designed mainly to control weeds, while the nonwoven prevents the attack of pests. The objective of this study was to evaluate the yield and fruit quality of watermelon grown under nonwoven textile protection combined with plastic mulching. The experiment was conducted at the WG Fruits Company, Baraúna, RN. A randomized block design was used in a factorial 3 x 3 + 1 with four replications, and 36 plants per plot, with the first factor of color of plastic used in mulching (black, silver and white) and the second factor nonwoven textile with different times of use (first and third crop nonwoven under textile and without nonwoven) and an absolute control (no mulching and without nonwoven). The production variables evaluated were: yield (commercial, noncommercial, and total fruit yield), and fruit quality (soluble solids - SS, titratable acidity - TA and SS/TA). The use of mulching and protection of plants with nonwoven textile provided a higher yield of watermelon fruits in relation to bare soil with and without nonwoven textile protection. Fruit quality was not affected by the use of mulching and nonwoven.

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Pós-graduação em Agronomia (Agricultura) - FCA

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE