Expanded Bundle
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Estudo comparativo de configurações geométricas em linhas de transmissão de 500kV
Este trabalho apresenta um estudo comparativo de diversas configurações geométricas para o arranjo de condutores de uma linha de transmissão de 500kV. São analisados, dentro do conceito de Linha de Potência Natural Elevada – LPNE, as técnicas de compactação entre fases e expansão do feixe de subcondutores, quanto aos aspectos de acoplamentos elé
Publicado em: 2010
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2. Quantificação morfoanatomica de laminas foliares de genótipos de Panicum maximum
The anatomy of the grass, related to the morphology and chemical composition of the leaf blades, can have influence in the intake and digestibilidade, intervening with the quality of the forage. Nine genotypes of Panicum maximum were evaluated at Embrapa Beef Cattle and Nucleus of Agricultural Sciences as to agronomic, chemical characteristics of leaves and
Publicado em: 2006
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3. Three-helix-bundle protein in a Ramachandran model
We study the thermodynamic behavior of a model protein with 54 amino acids that forms a three-helix bundle in its native state. The model contains three types of amino acids and five to six atoms per amino acid and has the Ramachandran torsional angles φi, ψi as its degrees of freedom. The force field is based on hydrogen bonds and effective hydropho
The National Academy of Sciences.
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4. Developmental and Environmental Effects on the Expression of the C3-C4 Intermediate Phenotype in Moricandia arvensis1
Cellular anatomy and expression of glycine decarboxylase (GDC) protein were studied during leaf development of the C3-C4 intermediate species Moricandia arvensis. Leaf anatomy was initially C3-like and the number and profile area of mitochondria in the bundle-sheath cells were the same as those in adjacent mesophyll cells. Between a leaf length of 6 an
American Society of Plant Physiologists.
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5. Photosynthetic Carbon Metabolism in Isolated Maize Bundle Sheath Strands 12
Photosynthetically active bundle sheath strands capable of assimilating up to 8 micromoles CO2 per milligram chlorophyll per hour have been isolated from fully expanded leaves of Zea mays L. Mesophyll cell contamination of the preparations was negligible, as evidenced by light and electron microscopy and by a high ratio of chlorophyll a to chlorophyll b in t
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6. NaCl-Induced Alterations in Both Cell Structure and Tissue-Specific Plasma Membrane H+ -ATPase Gene Expression.
NaCl-induced plasma membrane H+-ATPase gene expression, which occurs in roots and fully expanded leaves of the halophyte Atriplex nummularia L. (X. Niu, M.L. Narasimhan, R.A. Salzman, R.A. Bressan, P.M. Hasegawa [1993] Plant Physiol 103: 713-718), has been differentially localized to specific tissues using in situ RNA hybridization techniques. Twenty-four-ho
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7. C4 Photosynthetic Gene Expression in Light- and Dark-Grown Amaranth Cotyledons.
The patterns of expression for genes encoding several C4 photosynthetic enzymes were examined in light-grown and dark-grown (etiolated) cotyledons of amaranth (Amaranthus hypochondriacus), a dicotyledonous C4 plant. The large subunit and small subunit of ribulose-1,5-bisphosphate carboxylase (RuBPCase), phosphoenolpyruvate carboxylase (PEPCase), and pyruvate
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8. Carbon Isotope Discrimination, Gas Exchange, and Growth of Sugarcane Cultivars under Salinity.
Physiological features associated with differential resistance to salinity were evaluated in two sugarcane (Saccharum spp. hybrid) cultivars over an 8-week period during which greenhouse-grown plants were drip-irrigated with water or with NaCI solutions of 2, 4, 8, or 12 decisiemens (dS) m-1 electrical conductivity (EC). The CO2 assimilation rate (A), stomat
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9. A complement of ten essential and pleiotropic arabidopsis COP/DET/FUS genes is necessary for repression of photomorphogenesis in darkness.
Two genetic screens, one for mutations resulting in photomorphogenic development in darkness and the other for mutants with fusca phenotype, have thus far identified six pleiotropic Arabidopsis COP/DET/FUS genes. Here, we characterized representative mutants that define four additional pleiotropic photomorphogenic loci and a null mutant allele of the previou
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10. Sequence determinants of the energetics of folding of a transmembrane four-helix-bundle protein
Although previous studies are beginning to point to the specific types of helix–helix interactions that stabilize the folds of membrane-bound helical proteins, quantitative thermodynamic data on natural membrane proteins has been very limited. Here the database is expanded substantially by adding thermodynamic data for a series of sequence variants of M2 p
National Academy of Sciences.
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11. Monomeric isomers of human interleukin 5 show that 1:1 receptor recruitment is sufficient for function
The normally dimeric human interleukin 5 (IL-5) was re-engineered into two monomeric isomer forms to investigate mechanistic features of receptor recognition. One form, denoted GM1–IL-5, is a CD-loop expanded form, in which an 8-residue linker designed for flexibility was inserted between residues 85 and 86. The second, denoted DABC–IL-5, is a circularly
The National Academy of Sciences of the USA.