203 resultados para Rotation of crops


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C-13 and H-1 NMR data for a series of alpha-halo derivatives of o-xylene are presented. A dynamic H-1 NMR investigation of alpha,alpha,alpha',alpha'-tetrabromo-o-xylene (5) was performed and the spectrum of the most stable conformer at 213 K is presented. The free energy of activation for the rotation of the CHBr2 groups in 5 are determined for the first time. (C) 1997 Elsevier Science Ltd.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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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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The purpose of this study was to evaluate skeletal and dental stability in patients who had temporomandibular joint (TMJ) reconstruction and mandibular counterclockwise advancement using TMJ Concepts total join, prostheses (TMJ Concepts Inc. Ventura, CA) with maxillary osteotomies being performed at the same operation. All patients were operated at Baylor University Medical Center, Dallas TX, USA, by one surgeon (Wolford). Forty-seven females were studied; the average post-surgical follow-up was 40.6 months. Lateral cephalograms were analyzed to estimate surgical and post-surgical changes. During surgery, the occlusal plane angle decreased 14.9 +/- 8.0 degrees. The maxilla moved forward and upward. The posterior nasal spine moved downward and forward. The mandible advanced 7.9 +/- 3.5 mm at the lower incisor tips, 12.4 +/- 5.4 mm at Point B, 17.3 +/- 7.0 mm at menton, 18.4 +/- 8.5 mm at pogonion, and 11.0 +/- 5.3 mm at gonion. Vertically, the lower incisors moved upward -2.9 +/- 4.0 mm. At the longest follow-up post surgery, the maxilla showed minor horizontal changes while all mandibular measurements remained stable. TMJ reconstruction and mandibular advancement with TMJ Concepts total joint prosthesis in conjunction with maxillary osteotomies for counter-clockwise rotation of the rnaxillo-mandibular complex was a stable procedure for these patients at the longest follow-up.

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The effects of the clinical and dietetics in patient managements on the protein-energy status of hospitalized patients were retrospectively (four yr) investigated in 243 adult (49 +/- 16 yr), male (168) and female (75) patients suffering from chronic liver diseases (42%), intestinal diseases with diarrhea (14%), digestive cancers (11%), chronic pancreatitis (10%), stomach and duodenum diseases (7%), acute pancreatitis (7%), primary protein-energy malnutrition (3%), esophagus diseases (3%), intestinal diseases with constipation 14 (2%) and chronic alcoholism (2%). The protein-energy nutritional status assessed by combinations of anthropometric and blood parameters showed 75% of protein energy malnutrition at the hospital entry mostly (4/5) in severe and moderate grades. The overall average of hospitalization was 20 +/- 15 days being the shortest (13 +/- 5,7 days) for esophagus diseases and the longest (28 +/- 21 days) for the intestinal diseases with diarrhea patients which also received mostly (42%) of the enteral and/or parenteral feedings followed by acute pacreatitis (41%) and digestive cancers (31%) patients. When compared to the entry the protein-energy malnutrition rate at the discharge decreased only 5% despite the increasing of 30% found on the protein-energy intake. The main improvement of the protein-energy nutritional status were attained to those patients showing protein-energy malnutrition milder degrees at the entry which belonged mostly to primary protein-energy malnutrition, acute pancreatitis and intestinal diseases with diarrhea diseases. The later two groups showed protein-energy nutritional status improvement only after the second week of hospitalization. The digestive cancers patients had their protein-energy nutritional status worsened throughout the hospitalization whereas it happened only in the first week for the intestinal diseases with diarrhea and chronic liver diseases patients, improving thereafter up to the discharge. The protein-energy nutritional status improvement found in few patients could be attributed to some complementary factors such as theirs mild degree of protein-energy malnutrition at entry and/or non-invasive propedeutics and/or enteral-parenteral feddings and/or longer hospitalization staying. The institutional causes for the unexpected lack of nutritional responses by the patients were probably the high demand for the few available beds which favour the hospitalization of the most severed patients and the university-teaching pressure for the high rotation of the available beds. Both often resulting in early discharging. In persisting the current physical area and attendance demand one could suggest an aggressive support early at the entry preceding and/or accompanying the more invasive propedeutical procedures.

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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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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Agronomia (Ciência do Solo) - FCAV

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Com objetivo de estimar as associações entre os caracteres físico-químicos do fruto com variáveis meteorológicas, conduziu-se um experimento no pomar da Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, no período de dezembro/97 a janeiro/99, avaliando-se em cada colheita espontânea de 5 genótipos, valores médios de altura e diâmetro de vinte frutos, teor de vitamina C, ºBRIX, pH, rendimento médio de polpa em três amostras de vinte frutos, massa média de frutos e tempo de colheita em dias. Os dados meteorológicos diários utilizados foram obtidos na Estação Agroclimatológica do Departamento de Ciências Exatas da FCAV/ UNESP. Baseando-se nas maiores correlações entre as médias das temperaturas máxima (TMAX), mínima (TMIN) e média (TME) no período de colheita (1), no período de colheita incluindo-se os três dias antecedentes (2) e no período de colheita incluindo-se os dez dias antecedentes (3), associadas com os caracteres físico-químicos de frutos, elegeu-se TMIN2, como a mais influente entre as estudadas e estimou-se o somatório da precipitação (PR) e horas-luz diárias (HL) do mesmo período. Com as estimativas de precipitação e insolação em horas-luz diárias e TMIN2, obtiveram-se as correlações entre os caracteres físico-químicos de frutos de aceroleiras na média geral e dentro da média de cada genótipo analisado. Concluiu-se que as variáveis meteorológicas TMIN2, PR e HL apresentaram respostas diferenciadas dentro de cada genótipo, influenciando as expressões dos caracteres físico-químicos de seus frutos e que as correlações entre HL e tempo de colheita em dias, entre e dentro de todos os genótipos estudados, foram direta e altamente significativas, de modo que a variável HL condicionou a periodicidade e extensão das colheitas (safras).

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In mechanized harvesting of seeds can occur losses, which reduce productivity, decrease the profitability and can do serious damage to the producer. The objective of this work was to evaluate the quantitative seed losses of Crotalaria juncea depending on the harvester speed and the rotation of the threshing cylinder. The experiment was conducted in the area of Education, Research and Production Unesp/Jaboticabal, using a entirely casualized design on factorial away 2x3, with two-speed displacement of the machine (1.8 and 3.2 km h(-1)) and three rotations of threshing cylinder (750, 800 and 850 rpm), with 4 repetitions. It was concluded that the measures relating to the development of the plants showed homogeneous behavior, indicating little dispersion of the data. It was observed that the rate of displacement of the harvester and rotation of the drum track not affected the losses in the plataform of cutting. The largest losses of crotalaria seeds occurred on the plataform of cutting the harvester machine, in the form of pods not harvested. It was observed that the total losses in the harvest of crotalaria seed were high, and the losses in pods on the soil, responsible for almost all the losses encountered.