Senescent Material
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Grazing criteria for perennial peanut (Arachis pintoi cv. Amarillo) consumed by sheep in rotational stocking
RESUMO O objetivo do presente trabalho foi estudar o perfil produtivo do amendoim forrageiro em um ambiente rotacionado, sob diferentes critérios. Os tratamentos corresponderam à altura de pré-pastejo de 14 e 18cm ou 95% de intercepção de luz (LI), distribuídos em delineamento inteiramente ao acaso. As variáveis estudadas foram massa forrageira, porce
Arq. Bras. Med. Vet. Zootec.. Publicado em: 14/06/2019
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2. Post-fire consequences for leaf breakdown in a tropical stream
Resumo Objetivo Queimadas é um distúrbio natural nas paisagens do Bioma Savana. Este estudo avalia os efeitos do pós-fogo (antes e depois) na decomposição de serapilheira na comunidade de invertebrados e biomassa de fungos em diferentes detritos e malhas (fina e grossa) em riacho em curto prazo temporal. Métodos Folhas senescentes (2 ± 0,1 g de peso
Acta Limnol. Bras.. Publicado em: 03/06/2019
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3. Nutrientes no mantilho em pastagem nativa sob distintos manejos / Litter nutrients in native pasture to distincts managements
A avaliação da quantidade de nutrientes no mantilho é importante para verificar a ciclagem de nutrientes e a preservação da fertilidade do solo. O teor e a quantidade de nutrientes no mantilho e material senescente foram estudados em pastagem nativa sob pastejo, sujeita à queima e manejos alternativos, durante um ano, nos Campos de Cima da Serra, no Ri
Publicado em: 2010
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4. AVALIAÇÃO DA DISPONIBILIDADE DE FÓSFORO E RECOMENDAÇÃO DE ADUBAÇÃO FOSFATADA PARA CANA-PLANTA EM SOLOS DO ESTADO DE PERNAMBUCO / Evaluation of phosphorus availability and phosphate fertilizer recommendation for sugarcane in soils of Pernambuco State
Despite concerns with expected production, the phosphate fertilizer recommendation for Pernambuco lacks of the soil buffer capacity influence on P availability. Therefore, this work had as objective to 1) evaluate the maximum agronomic end economic influence of phosphate fertilizer in sugarcane, considering content and quality of clay fraction; 2) relate phy
Publicado em: 2008
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5. Avaliação agronômica da cana-de-açúcar submetida a métodos de colheita para produção animal / Agronomic traits of sugarcane (Saccharum spp.) under different harvesting methods for animal production
This research aimed to study harvesting losses, morphologic composition, dynamics of tillering and accumulation and, tiller density of sugarcane IAC86-2480 variety under three harvesting methods. In manual harvesting (MAN), plants were harvested to ground level, using a cutter. For mechanical harvesting (MEC), the harvester (adjusted for 20 cm from the groun
Publicado em: 2008
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6. Toxicity evaluation of Microcystis aeruginosa cultures and natural cyanobacteria blooms from reservoirs of Tietê river, SP / Avaliação da toxicidade de Microcystis aeruginosa e de florações naturais de cianobactérias de reservatórios do rio Tietê, SP
The effects of cyanobacteria upon aquatic organisms were evaluated, aiming to characterize and quantify the toxins of both, a monospecific cyanobacterial culture and material from natural blooms occurring in the reservoirs of Tietê river, SP. The already known toxic strain NPLJ-4 of Microcystis aeruginosa was cultured in ASM-1 medium at 25 Celsius degrees a
Publicado em: 2007
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7. Respostas de bovinos de corte à suplementação energética em pastos de capim-marandu submetidos a intensidades de pastejo rotativo durante o verão / Beef cattle responses to energetic supplementation on Marandu palisadegrass pastures subjected to rotational grazing with different stubble heights during the summer
Adequate grazing management and supplementation practices can increase yield and economical competitiveness of the production system. The purpose of this work was to evaluate the performance of beef cattle on Brachiaria brizantha pastures (Marandu palisadegrass) subjected to rotational grazing managed with different stubble heights (10 vs 15cm), using an ene
Publicado em: 2007
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8. Inactive Enzyme Molecules in Aging Mice: Liver Aldolase
Evidence is presented that there is a considerable accumulation of inactive fructose-1,6-diphosphate aldolase (EC 4.1.2.7) in the liver of senescent mice. Liver aldolase was purified from 3-month-old mice and used to immunize rabbits. It was demonstrated with the monospecific antibody thus produced that the liver aldolase of young adult (3 month) and aged (3
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9. Onset of Phloem Export from Senescent Petals of Daylily.
During senescence, petals of attached daylily (Hemerocallis hybrid cv Cradle Song) flowers lost 95% sugar and 65% dry weight over the first 24 h, with 30% of dry weight loss coming from nonsugar components. Detaching flowers did not delay senescence, but halted loss of carbohydrate and amino acid, suggesting that loss in the intact state was due to phloem ex
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10. Detergent Extraction of Enzymes from Tobacco Leaves Varying in Maturity 1
Enzyme activities of tobacco leaves were compared in detergent extracts. Highest levels of chlorogenic acid oxidase, malate-NAD oxidoreductase, and acid phosphatase were obtained from bud tissues. Peroxidase activity was least in young leaves and highest in senescent leaves yellowed with Ethrel. Peroxidase zymograms obtained by means of disc electrophoresis
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11. Syncytial knots and intervillous bridges in the human placenta: an ultrastructural study.
An electron microscopic study has shown that the syncytial knots of the villi of the human placenta contain aggregated nuclei which exhibit marked degenerative changes; within the cytoplasm there is an abundance of cytoplasmic filaments and many stacks of annulate lamellae. It is suggested that syncytial knots are a sequestration phenomenon in which senescen
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12. Blood supply to the human femoral diaphysis in youth and senescence.
The nutrient foramina in the human femoral diaphysis were counted in 109 cleaned and dried bones, ranging in age from 38 to 98 y. Although statistical analysis for univariate associations found that foramen number was not linked to age, sex (male/female) or side (R/L), multivariate logistic analysis revealed a significant interaction between the effects of s