Qualidade do café natural e despolpado após secagem em terreiro e com altas temperaturas

Objetivou-se no presente trabalho verificar a qualidade do café natural e despolpado durante a secagem em terreiro e secagem com ar aquecido a 40º e 60ºC. O trabalho foi realizado no Departamento de Engenharia e no Pólo de Tecnologia em Pós-Colheita do Café da Universidade Federal de Lavras (UFLA). A colheita do café, cultivar Topázio, foi seletiva. Parte do café foi despolpado e outra parte processado de forma natural. Uma parcela de cada tipo de café foi conduzida para a secagem em terreiro e outra parcela para secagem com temperaturas de 40ºC e 60ºC. Para avaliação da qualidade, foram feitos teste de condutividade elétrica e lixiviação de potássio; determinação de acidez titulável total; teste de acidez graxa; açúcares totais e redutores. Os resultados obtidos permitem concluir que: o tempo para secagem é afetado pelos diferentes tipos de secagem e processamentos; a condutividade elétrica, a lixiviação de potássio, a acidez titulável total e a acidez graxa aumentam com a elevação da temperatura de secagem, independente do tipo de processamento; os açúcares redutores e os açúcares totais diminuem com o aumento da tem peratura de secagem independente do tipo de processamento; a secagem com temperatura de 60ºC afetou negativamente a qualidade do café.

Traços de personalidade e habilidades sociais em universitários

O presente estudo teve como objetivo analisar as relações entre habilidades sociais e traços de personalidade englobados por socialização, no modelo dos Cinco Grandes Fatores. O Inventário de Habilidades Sociais (IHS) foi utilizado para a mensuração de habilidades sociais, e para avaliação do nível de socialização foi escolhida a Escala Fatorial de Socialização (EFS). A amostra foi composta por 126 estudantes universitários com média de idade de 21 anos (DP=3,37), e 53,5% eram homens. Os resultados da IHS e EFS foram comparados para os sexos, encontrando-se diferenças estatisticamente significativas para seis das dez medidas realizadas no estudo. Foram encontradas correlações significativas entre amabilidade, auto-afirmação e o total do IHS. Pró-sociabilidade correlacionou-se com auto-afirmação e autocontrole. Confiança nas pessoas apresentou correlações significativas com enfrentamento, auto-afirmação e autocontrole. Os resultados indicam que, efetivamente, a personalidade pode influenciar diferentes aspectos da habilidade social.

Construção e Análise do Desempenho de um Porta-amostra para Medidas Elétricas a Altas Temperaturas

A sample holder for electrical measurements with the temperature changing from 50 degrees C up to 560 degrees C is described. The performance of the system for de and ac measurements is analysed.

Crescimento radicular e aéreo de cultivares de arroz de terras altas em função da calagem

This work aimed to evaluate root growth, shoot development and nutrient absorption efficiency by rice cultivars Caiapo and Maravilha as affected by lime application. The experiment was carried out in a greenhouse, with treatments set up by Caiapo and Maravilha cultivars in combination with the base saturation (V%) of 10%, 40% and 70%. The experiment was in a randomized complete block design, with four replications. The number of tillers, root length, root dry matter, leaves and stems, leaf content and macronutrients absorption efficiency were evaluated. Comparing cultivars, Maravilha cultivar presented higher root dry weight, root length, number of stems, dry matter of stems and shoot than Caiapo cultivar, as well as accumulated more nutrients in the shoots. on the other hand, nutrient contents were higher in the cultivar Caiapo compared to Maravilha. Maravilha cultivar shows greater root and shoot growth while Caiapo shows higher nutrient absorption efficiency from the soil. The base saturation of 40% is the most effective for both cultivars.

A família Myrtaceae na reserva particular do patrimônio natural da Serra do Caraça, Catas Altas, Minas Gerais, Brasil

This is a floristic survey of Myrtaceae in the Serra do Caraça, Minas Gerais. Fifty two species were found belonging to 12 genera - Myrcia with 17 species, Eugenia with nine, Campomanesia and Myrciaria with five species each, Psidium with four, Siphoneugena with three, Blepharocalyx, Calyptranthes, Marlierea and Myrceugenia with two species each, and Accara and Plinia with one species each. Descriptions of the genera and species, identification keys, geographical distributions, illustrations and comments are provided. © 2005 Instituto de Ciências Biológicas - UFMG.

Uso do regulador de crescimento etil-trinexapac em arroz de terras altas

This work was developed with the objective of evaluating the use of trinexapac-ethyl doses (0, 75, 150, 225 and 300 g of the a.i. ha -1) and application times (active tillering, between active tillering and floral differentiation and at floral differentiation) in upland rice crop development and yield. The experiment was carried out in Selvíria-MS, during the agricultural year of 2006/07. Application of 150 g ha -1 of trinexapac-ethyl in Primavera rice cultivar at panicle initiation differentiation reduces plants height, 0.40 m on average comparing to other times, with lodging absence. Trinexapac-ethyl promotes lange number of abnormal grains, reduction of grain yields in doses above 150 g ha -1, when applied in panicle initiation differentiation stadium. Application of 150 g ha -1 of trinexapac-ethyl at any time does not interfere in crop yield.

Glyphosate como regulador de crescimento em arroz de terras altas

The lodging of some rice cultivars at harvest time can lead to significant losses in yield, and the inappropriate water and nitrogen management, under high-tech conditions, can aggravate the problem. The use of vegetal regulators is an alternative to reduce lodging, however, information on this topic are rare. The study aimed to evaluate the application of glyphosate sub doses (26 g ha -1, 52 g ha -1, 78 g ha -1, 104 g ha -1, 130 g ha -1, 156 g ha -1, and 182 g ha -1) on agronomical traits, development, and yield of upland rice crops irrigated by aspersion, during the floral differentiation period. The experiment was carried out in Selvíria, Mato Grosso do Sul State, Brazil, through the agricultural years of 2008/2009 and 2009/2010. The increase of glyphosate sub doses, at the floral differentiation period of the Primavera cultivar, reduced the plants height, panicle size, and, consequently, yield. Sub doses higher than or equal to 78 g ha -1 eliminated the plants lodging process.

Análise de crescimento e produtividade de cultivares de arroz de terras altas dos tipos tradicional, intermediário e moderno

The growth analysis allows the characterization and understanding of the upland rice cultivars development. This study aimed at characterizing, by using the growth analysis, the physiological components and agronomic performance, as well as the differences among traditional, intermediate and modern upland rice cultivars. The experiment was conducted under upland rice conditions, favored by the use of supplementary irrigation. The experimental design was randomized blocks, with three treatments consisting of traditional (Caiapó), modern (Maravilha) and intermediate (BRS Primavera) cultivars and eight replications. The leaf area index (LAI), instantaneous growth rate (IGR), relative growth rate (RGR), net assimilation rate (NAR) and specific leaf area (SLA), as well as grain yield and yield components, were evaluated. The intermediate and traditional cultivars presented the highest total dry matter accumulation rate, while the traditional and modern ones showed the highest LAI. The intermediate cultivar presented the highest IGR, RGR, NAR and SLA levels, as well as the highest grain yield, as a consequence of the higher spikelet fertility and 1,000 grain mass.

Habilidades sociais e administração de tempo no manejo do estresse

Recent searches suggest that social skills and time management as control variables of stress. In order to analyze possible relations between these variables and stress, it was done a descriptive study with a sample of convenience. Eighty three freshmen students, both of gender, of Biology, Civil Engineering and Psychology answered the Stress Inventory (ISSL), Social Skills Inventory (IHS) and a Time Management Inventory adaptation (ADT). It is emphasized that methodology of adaptation, the pro rata system, was not based on high standards of psychometry, which can lead to change of configuration of the instrument and the data it provides. The most of participants were unde rthe media in Social Skills and 72,29% manage badly the time. The stress rate was 48,19%. It was found connection between bad time management and stress and the lack of social skills was associated to bad time management. There wasn't statistic connection between stress and social skills lack. Students in Civil Engineering had the smaller stress rate, as well as the bigger lack of a Social Skills category.

Tolerância à deficiência hídrica de genótipos de arroz de terras altas

Water deficit is one of the environmental factors that cause a great reduction in the upland rice grain yield. The objective of this study was to evaluate genotypes of upland rice with broad genetic diversity for tolerance to this stress and to identify secondary traits for evaluation of this tolerance. Sixty-four genotypes were evaluated during two years at the Experiment Station of EMATER, in Porangatu, GO, under well-watered and water deficit conditions. The genotypes showed differences in grain yield and were influenced differently by the water treatments, both under a mild water deficit in the first year and under a severe one in the second year. The genotype grain yield under water deficiency was significantly and positively correlated with tiller fertility, number of panicles m-2, 100-grain weight, and plant height, and negatively with spikelet sterility and the number of days for the occurrence of 50% panicle emergence. It was also observed that the most productive genotypes under water deficit conditions showed lower leaf temperature, indicating improved water status. Nine genotypes were productive in both water conditions and three were productive only when well-watered.

Avaliação e treinamento de habilidades sociais de crianças em idade pré-escolar

Pós-graduação em Psicologia do Desenvolvimento e Aprendizagem - FC

Efeito da predação por Acanthoscelides schrankiae(Coleoptera: Bruchidae) e de altas temperaturas na germinação de sementes de Mimosa bimucronata (DC.) Kuntze (Fabaceae: Mimosoideae)

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

Elaboração de programa de intervenção com as habilidades percepto-viso-motoras em escolares com dislexia do desenvolvimento

Pós-graduação em Fonoaudiologia - FFC

Desenvolvendo competências e habilidades na sala de aula de física

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Ensino de biologia e o desenvolvimento de habilidades cognitivas por meio de atividades práticas e contextualizadas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)