Effect Of Heavy Metals On
Mostrando 13-24 de 80 artigos, teses e dissertações.
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13. Propriedades microbiológicas, bioquímicas, químicas e crescimento de plantas de soja e trigo em solos acrescidos de lodo galvânico
Atualmente, as estratégias de disposição de resíduos sólidos são uma preocupação crucial que afeta a saúde humana e ambiental. O resíduo sólido produzido pelos processos de galvanização apresenta altas concentrações de metais pesados (elementos-traço) como Ni, Cr e Cu, que podem ser usados para simular condições de multicontaminação indus
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2011
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14. Ecophysiological and anatomical changes due to uptake and accumulation of heavy metal in Brachiaria decumbens
The growth and developmental characteristics of grasses and their high biodiversity make such plants suitable for remediation of areas contaminated by heavy metals. Nevertheless, heavy metal toxic effect on the plants may cause alteration in their metabolic pathways, such as photosynthesis, respiration, and growth, modifying plant anatomy. This work aimed to
Scientia Agricola. Publicado em: 2011-10
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15. Effects of heavy metals and light levels on the biosynthesis of carotenoids and fatty acids in the macroalgae Gracilaria tenuistipitata (var. liui Zhang & Xia)
We present here the effect of heavy metals and of different light intensities on the biosynthesis of fatty acids and pigments in the macroalga Gracilaria tenuistipitata (var. liui Zhang & Xia). In order to verify the fatty acid content, gas chromatography with flame ionization detection (GC-FID) was employed. Pigments (major carotenoids and chlorophyl-a) wer
Revista Brasileira de Farmacognosia. Publicado em: 15/04/2011
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16. Uso de biossólido em plantios florestais.
ABSTRACT: With the increase of the population density in the cities, a great amount of residual waters passed to be generated. The usual practical ones of disposal of the sewage sludge, as the "sanitary and controlled embankment" or the "oustings the opened sky", are alternative of cost to each day more raised or have potential to produce impacts ambient und
Planaltina. Publicado em: 2011
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17. Establishment of recommendations and parameters for use of urban waste compost in agriculture in the State of Sao Paulo - Brazil.
The organic matter present in urban waste (45 to 60% of total dry mass), after being stabilized in the form of compost, is recommended for application in agricultural soils, since it improves its physical and chemical properties and benefits the soil biological processes. Also, the urban waste compost has been economically viable for application in agricultu
INTERNATIONAL ORBIT CONFERENCE. Publicado em: 2011
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18. Inoculation with mycorrhizal fungi modifies proline metabolism and increases chromium tolerance in pepper plants (Capsicum annuum L.)
In general, heavy metals interfere with several physiological processes and reduce plant growth. Plants naturally establish symbiotic associations with soil microorganisms, such as mycorrhizal fungi. The aim of this research was to determine if inoculation with mycorrhizal fungi increases tolerance to Cr, evidenced by growth and biochemical parameters and th
Brazilian Journal of Plant Physiology. Publicado em: 2011
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19. Influência de polimorfismos em genes de metabolismo de xenobióticos e reparação de DNA no risco ocupacional de mineiros de carvão a céu aberto
Colombia has one of the world s largest coal reserves being the fifth biggest thermal coal exporter world-wide. In open-cast coal mining extraction, large amounts of dust particles and heavy metals are released into the atmosphere, where they can form complex mixtures, representing a significant health risks to occupationally exposed workers. In addition, in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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20. Tolerancia aos metais pesados chumbo e zinco e potencial fitorremediador de mudas de especies arboreas / Tolerance to the heavy metals lend and zinc and phytoremediation potential of seedlings of tree species
A contaminação do solo por metais pesados (MPs), causada por processos naturais ou atividade humana, é um dos mais graves problemas ambientais devido à persistência e alto poder de toxicidade dos MPs. Em ambientes contaminados por MPs, as plantas podem apresentar uma série de distúrbios fisiológicos e nutricionais. No entanto, algumas espécies de pl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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21. Dynamic adsorption of chromium ions onto natural and crosslinked chitosan membranes for wastewater treatment
Water pollution with heavy metals is a matter of major concern for public health and also for natural resource management. The present study investigated the effect of chemical modifications on biopolymeric adsorbents (based on chitosan membranes) for chromium removal using fixed-bed dynamic adsorption technique. Parameters such as flow rate, initial concent
Materials Research. Publicado em: 2010-03
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22. Diagnóstico ecotoxicológico dos efluentes lançados no complexo estuarino do Jundiaí/Potengi, Natal/RN
Untreated effluents that reach surface water affect the aquatic life and humans. This study aimed to evaluate the wastewaters toxicity (municipal, industrial and shrimp pond effluents) released in the Estuarine Complex of Jundiaí- Potengi, Natal/RN, through chronic quantitative e qualitative toxicity tests using the test organism Mysidopsis Juniae, CRUSTACE
Publicado em: 2010
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23. Óleo essencial de eucalipto como bioestimulador da micorrização e do estabelecimento de mudas de eucalipto e sibipiruna em solo contaminado com cobre / Essential oil of eucalyptus as biostimulator of mycorrhiza and the eucalyptus and sibipiruna tree establishment in soil contaminated with copper
Ectomycorrhizal fungi (fECM) combined with the plant root system improve the absorption of water and nutrients, providing great plant growth, especially in environments with nutritional deficiency or degraded. Due to the fECM and plants live in mutualistic association, allows the fungal symbionts to be benefit, or at least tolerate, the secondary metabolites
Publicado em: 2010
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24. 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