Zinc Transport
Mostrando 1-12 de 120 artigos, teses e dissertações.
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1. Conformational analysis of Pneumococcal Surface Antigen A (PsaA) upon zinc binding by fluorescence spectroscopy
ABSTRACT PsaA (pneumococcal surface antigen A) is a S. pneumoniae virulence factor that belongs to the metal transport system. The Manganese PsaA binding has been associated with oxidative stress resistance becoming a pivotal element in the bacteria virulence. It has been shown that Zinc inhibits the Manganese acquisition and promotes bacteria toxicity. We h
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018
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2. Transport Properties of Polycrystalline Mixed Copper-Zinc Ferrites
Polycrystalline mixed Cu-Zn spinel ferrites with general formula Cu1-xZnxFe2O4 (x = 0.0, 0.1, 0.3, 0.5 and 0.7) have been prepared by solid-state reaction method. The effect of Zn2+ ions on transport properties such as DC and AC resistivity, dielectric constant and dielectric loss tangent has been presented in this paper. The resistivity increases with Zn co
Mat. Res.. Publicado em: 19/04/2018
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3. Effects of the silica nanoparticles (NPSiO2) on the stabilization and transport of hazardous nanoparticle suspensions into landfill soil columns
Abstract This study evaluates the stability and transport behaviors of hazardous nanoparticles into soil landfills using experimental procedures to simulate the effects of natural silica nanoparticle suspensions during their percolation into the soil layers of municipal waste landfills. For this, we prepared stabilized suspensions of nanoparticle oxides cont
REM, Int. Eng. J.. Publicado em: 2017-09
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4. Avaliação de fontes, absorção foliar e translocação de zinco (68Zn) em laranjeiras / Sources evaluation, foliar uptake and zinc translocation (68Zn) in Orange
Studies of zinc fertilization on citrus foliar developed in Brazil are mostly limited to information of the nutrients quantities absorbed by the leaves, but the zinc transport of the leaves to other parts of the plants need to be clarified. Most investigations on this subject is vast array of conflicting results. As a result, the use of stable isotope techni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2012
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5. Transcriptome analysis of resistant soybean roots infected by Meloidogyne javanica
Soybean is an important crop for Brazilian agribusiness. However, many factors can limit its production, especially root-knot nematode infection. Studies on the mechanisms employed by the resistant soybean genotypes to prevent infection by these nematodes are of great interest for breeders. For these reasons, the aim of this work is to characterize the trans
Genet. Mol. Biol.. Publicado em: 2012
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6. ATRIBUTOS DE QUALIDADE EM SEMENTES DE TRIGO RECOBERTAS COM ZINCO DURANTE E APÓS ARMAZENAMENTO / ATTRIBUTES OF QUALITY SEEDS OF WHEAT ZINC COATED DURING AND AFTER STORAGE
Seed coating treatments are among the most interesting and potentially beneficial for enhancing the performance of the same. This fact, which helps the producer to improve the performance and development of seedlings, with the possibility the use of micronutrients such as zinc, in the seeds. Our objectives were to evaluate the effect of wheat seed coating wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2011
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7. Estudo de materiais, estruturas de dispositivos e fenômenos de transporte em sistemas fotovoltaicos híbridos orgânico-inorgânico / Study of materials, device structures and transport phenomena in hybrid photovoltaic systems
Recently a fast development in organic and hybrid photovoltaic field has been observed. Such devices are fabricated by organic semiconductors within components of a heterojunction, in which bulk heterojunctions obtained via interpenetrating networks at the sub-20-nm length scale. It permits the effective collection of photogenerated charge carriers even with
Publicado em: 2010
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8. Metabolismo de zinco em Paracoccidioides bradiliensis
The thermally dimorphic fungus Paracoccidioides brasiliensis is the agent responsible for causing paracoccidioidomycosis, a common systemic mycosis in Latin America. The infectious process is characterized by the fungus conversion from a non-pathogenic to a pathogenic form. The infectious process establishment depends on the acquisition of essential micronut
Publicado em: 2009
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9. SIMULATION OF THE VERTICAL TRANSPORT OF ZINC, LEAD AND COPPER IN CONTAMINATED SOILS / SIMULAÇÃO DO TRANSPORTE VERTICAL DE ZINCO, CHUMBO E COBRE EM SOLOS CONTAMINADOS
The environmental contamination by metallic trace elements is a problem that is getting worse around the world due to the growth and the technologic development of the humanity. Among the main sources of this kind of contamination are the atmospheric deposition of particles in soils located around industrial complexes and the prolonged and concentrated appli
Publicado em: 2009
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10. Tin and zinc oxides semiconductor devices / Dispositivos semicondutores a partir de óxidos de estanho e zinco
This work presents the study and development of semiconductor devices base on tin and zinc oxides. The first device is related to the development of pH sensors based on field effect, while the second device uses surface acoustic waves for the transport of carriers related to a single photon detector device. Initially, the semiconductors were used as hydrogen
Publicado em: 2009
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11. Adsorção individual e competitiva de Cd, Cu, Ni e Zn em solos em função da variação de pH / Individual and competitive adsorption of Cd, Cu, Ni and Zn in soils as a function of pH variation
The disposal of solid waste or the application of pesticides and fertilizers may increase the concentration of potentially toxic elements, especially heavy metals, in soil and in groundwater. As the soil has been considered a potential deposit for the provision of such wastes, it is important to know the mechanisms of retention and transport of these element
Publicado em: 2009
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12. 65Zn2+ transport processes of isolated gill epithelial cells of the American lobster Homarus americanus / Caracterização do transporte de zinco em células isoladas do epitélio branquial da lagosta Homarus americanus
Os filamentos branquiais da lagosta Americana, Homarus americanus, foram dissociados em solução salina fisiológica e os diversos tipos celulares separados em gradiente de 30, 40, 50 e 80% de sacarose através de centrifugação de alta velocidade. As células provenientes de cada solução de sacarose foram incubadas em 65Zn2+ visando caracterizar a tomad
Publicado em: 2008