Metal Retardation
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Epidemiology and phospholipase activity of oral Candida spp. among patients with central nervous system diseases before and after dental cleaning procedure
Patients suffering of diseases that affect central nervous system may be considered more susceptible to the infectious diseases of mouth. Sixty-nine patients suffering of cerebral palsy, Down's syndrome and metal retardation were submitted to saliva examination for the presence of Candida spp. before and after a procedure of dental cleaning. The isolates wer
Brazilian Journal of Microbiology. Publicado em: 2010-03
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2. BIOCHEMICAL AND PHYSIOLOGICAL RESPONSES OF Cucumis sativus AND Avena sativa TO EXCESS ALUMINUM STRESS. / RESPOSTAS BIOQUÍMICAS E FISIOLÓGICAS DE Cucumis sativus E Avena sativa AO ESTRESSE CAUSADO POR ALUMÍNIO
Aluminum (Al) is the most abundant metal in the Earth s crust, affecting growth and development of plants. The aim of this study was to investigate the effects of Al on seedlings of cucumber (Cucumis sativus L.) and oat (Avena sativa L) through the analysis of biochemical and physiological parameters. Three different genotypes of oat seedlings were studied,
Publicado em: 2010
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3. O gene UBE2A (Ubiquitin conjugating enzyme 2 A) e a deficiência mental: triagem de mutações e estudos funcionais / UBE2A (Ubiquitin conjugating enzyme 2 A) gene and mental retardation: search for mutations and functional studies
Em trabalho anterior, identificamos a mutação c.382C8594;T no gene UBE2A, localizado em Xq24 e codificador de enzima conjugadora de ubiquitina, como causa de nova síndrome de deficiência mental (DM) de herança ligada ao cromossomo X. Foi a primeira descrição de mutação nesse gene e a primeira associação de mutação em gene que codifica conjugase
Publicado em: 2010
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4. Retenção de metais pesados em solos agricultáveis do Estado de Goiás / Retention of heavy metals in agricultural soils of the State of Goiás
A intensificação do uso das terras para fins agropecuários tem causado grande preocupação, devido, principalmente, aos impactos que essas atividades vêm causando ao meio ambiente, sobretudo no que diz respeito à sua contaminação por substâncias químicas. A aplicação de produtos químicos e de resíduos diversos no solo e, ou, nas plantas, com o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2009
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5. Retenção de metais pesados em solos agricultáveis do Estado de Goiás / Retention of heavy metals in agricultural soils of the State of Goiás
The intensification of the use of land for farming has caused great concern, mainly due to the impacts that these activities are causing the environment, particularly with regard to its contamination by chemicals. The application of chemicals and waste ground and in several, or in plants in order to take agronomically solid waste, improve productivity and in
Publicado em: 2009
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6. Remoção de metais pesados do percolado de aterro sanitário usando resíduos sólidos urbanos e de construção civil / Removal of heavy metals in the percolate of the landfill using urban solid and of building demolition wastes
The high toxicity and the cumulative nature of the heavy metals have been the reason of great concern worldwide, providing a significant increase of works that objectify to develop technologies to remove of these potentially harmful substances to the environment. With the objective of studying the heavy metals removal capacity in percolate produced by newly
Publicado em: 2008
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7. Kinetics of the Decomposition of Hydrogen Peroxide Catalyzed by Ferric Ethylenediaminetetraacetate Complex
Added substrates, acetone and t-butyl alcohol, strongly retard the decomposition of H2O2 brought about by ferric ethylenediaminetetraacetate (EDTA) at pH 8-9.5. Their relative effectiveness and the kinetic form of the retardation are consistent with their interruption of a hydroxyl radical chain that is propagated by HO· attack both upon H2O2 and on complex
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8. Cobalt(III), a probe of metal binding sites of Escherichia coli alkaline phosphatase.
To facilitate the study of individual metal binding sites of polymeric metalloproteins, conversion of exchange-labile Co(II) in E. coli alkaline phosphatase (EC 3.1.3.1) to exchange-inert Co(III) was examined. Oxidation of Co(II) alkaline phosphatase with hydrogen peroxide results in a single absorption maximum at 530 nm and loss both of the characteristic e
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9. Metal-dependent binding of a nuclear factor to the rat metallothionein-I promoter.
Genomic footprinting studies in vivo and experiments using synthetic metal regulatory elements (MREs) in vitro suggest protein binding to the MREs of the mouse and rat metallothionein I (MT-I) genes. Using gel-retardation assays of promoter fragments, we observe a cadmium-dependent binding factor for the rat MT-I promoter in rat hepatoma cells. This factor i
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10. Characterization of mutations that inactivate the diphtheria toxin repressor gene (dtxR).
The diphtheria toxin repressor (DtxR) is an iron-dependent regulator of diphtheria toxin production and iron uptake in Corynebacterium diphtheriae. It is activated in vitro by divalent metal ions including Fe2+, Cd2+, Co2+, Mn2+, Ni2+, and Zn2+. We characterized 20 different mutations in dtxR induced by bisulfite mutagenesis, 18 of which caused single-amino-
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11. Stimulation of Mycelial Growth of Endothia parasitica by Heavy Metals 1
Of 16 metal cations tested on agar medium, only copper and iron stimulated mycelial growth of Endothia parasitica in relatively high concentrations. Similarly enhanced growth was produced in high (32%) glucose concentrations and also when the fungus was grown on cellophane placed over the agar surface. E. parasitica secreted large amounts of oxalate that pre
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12. An SmtB-like repressor from Synechocystis PCC 6803 regulates a zinc exporter
ORF slr0798, now designated ziaA, from Synechocystis PCC 6803 encodes a polypeptide with sequence features of heavy metal transporting P-type ATPases. Increased Zn2+ tolerance and reduced 65Zn accumulation was observed in Synechococcus PCC 7942, strain R2-PIM8(smt), containing ziaA and upstream regulatory sequences, compared with control cells. Conversely, r
The National Academy of Sciences.