Dynamic Chambers
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Temporal Variation of Soil Physical Quality under Conventional and No-Till Systems
ABSTRACT: Determination of soil physical quality (SPQ) is very important because it is related to many important soil processes. However, it is not clear which indicators should be considered in this evaluation, and information about temporal variation of SPQ under different soil tillage systems is scarce. The aim of this study was to determine the effects o
Rev. Bras. Ciênc. Solo. Publicado em: 16/04/2018
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2. Environmental Effects on Thermal Properties of PEI/Glass Fiber Composite Materials
ABSTRACT: The aim of this study was to investigate the effects of hygrothermal exposure, ultraviolet (UV) radiation, salt spray and thermal shock aging on the thermomechanical behavior of glass fiber reinforced by poly (ether-imide) (PEI) composites. Dynamic mechanical (DMA) and Thermomechanical (TMA) analyses have been performed on the aged PEI composites a
J. Aerosp. Technol. Manag.. Publicado em: 2013-06
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3. Processo de ciclagem e emissão de gases de efeito estufa em reservatório hidrelétrico do Centro-Oeste do Brasil (Cerrado) / Cycling process and emission of effect gases greenhouse in hydroelectric reservoir of the center-West of Brazil (Cerrado)
Foi apresentado um sistema automatizado para monitorar fluxos de metano (CH4) e do dióxido de carbono (CO2) na relação da água/ar de ecossistemas aquáticos. Consiste em uma série de câmaras flutuantes dinâmicas acopladas a um analisador photo acústico infravermelho de gás. Associado os outros sensores atmosféricos e de qualidade da água, foi poss
Publicado em: 2008
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4. Fluxo do CO2 proveniente da respiração do solo em áreas de floresta nativa da Amazônia / CO2 flux from soil respiration in areas of native Amazon forest
Carbon dioxide is an important contributor to the greenhouse effect, and by extension, the global climate system as a whole; it is generated and consumed through the activities of terrestrial and aquatic microorganisms. Tropical forest CO2 fluxes at the soil-atmosphere interface depend on changes in the physical, chemical and biological characteristics of th
Publicado em: 2006
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5. Avaliação do processo de cicatrização de lesões, tratadas com laser de baixa intensidade, através de sistema de aquisição e tratamento de imagem
Wound healing is a complex dynamic process characterized as a sequence of responses from several types of cells (epithelial, inflammatory, blood platelet, and fibroblasts) that interact to restore tissue complexion. It starts right after occurring an injury with an inflammatory stage, which is followed by granulation and, finally, by epithelization. Several
Publicado em: 2006
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6. Fluid and Penicillin G Dynamics in Polyethylene Chambers Implanted Subcutaneously in Rabbits
Chemical and cellular characteristics of fluid within subcutaneously implanted polyethylene chambers in rabbits were studied over a 3-month period. The fluid attained a relatively stable protein and cellular composition which was consistent with a mononuclear exudate. After a single dose of intramuscular penicillin G, the antibacterial activity of chamber fl
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7. Assembly and positioning of microtubule asters in microfabricated chambers
Intracellular organization depends on a variety of molecular assembly processes; while some of these have been studied in simplified cell-free systems, others depend on the confined geometry of cells and cannot be reconstructed using bulk techniques. To study the latter processes in vitro, we fabricated microscopic chambers that simulate the closed environme
The National Academy of Sciences of the USA.
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8. Dynamic Localization of Rop GTPases to the Tonoplast during Vacuole Development1
Vacuoles are essential pleomorphic organelles that undergo dynamic changes during cell growth and differentiation in plants. How developmental signals are linked to vacuole biogenesis and development is poorly understood. In this report, we show that a Rop GTPase is localized to developing vacuoles in pea (Pisum sativum cv Extra Early Alaska). Rop belon
American Society of Plant Physiologists.
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9. Essential role for a heterogeneous nuclear ribonucleoprotein (hnRNP) in oogenesis: hrp40 is absent from the germ line in the dorsoventral mutant squid.
The Drosophila melanogaster hrp40 proteins are abundant nuclear pre-mRNA-binding proteins that are similar to the heterogeneous nuclear ribonucleoprotein (hnRNP) A/B proteins of vertebrates. Recently, hrp40 has been shown to be encoded by the squid gene, which is required for dorsoventral axis formation during oogenesis. Eggs and embryos from homozygous squi
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10. Accessory cholera enterotoxin (Ace), the third toxin of a Vibrio cholerae virulence cassette.
Vibrio cholerae causes the potentially lethal disease cholera through the elaboration of the intestinal secretogen cholera toxin. A second toxin of V. cholerae, Zot, decreases intestinal tissue resistance by modifying intercellular tight junctions. In this report, a third toxin of V. cholerae, Ace (accessory cholera enterotoxin), is described. Ace increases
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11. Green fluorescent protein as a vital marker and reporter of gene expression in Drosophila.
We have used the green fluorescent protein (GFP) from the jellyfish Aequorea victoria as a vital marker/reporter in Drosophila melanogaster. Transgenic flies were generated in which GFP was expressed under the transcriptional control of the yeast upstream activating sequence that is recognized by GAL4. These flies were crossed to several GAL4 enhancer trap l
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12. Dependence of the Extent and Direction of Average Stomatal Response in Zea mays L. and Phaseolus vulgaris L. on the Frequency of Fluctuations in Environmental Stimuli.
Stomatal responses to fluctuating light and CO2 were investigated in Zea mays and Phaseolus vulgaris. Slow-moving stomata can affect carbon gain and water loss by plants during light flecks, under dynamic cloud cover, during alternating windy and calm air conditions (which influence CO2 concentrations and humidity immediately around leaves in plant canopies)