Mn Toxicity
Mostrando 1-12 de 96 artigos, teses e dissertações.
-
1. Environmental effects of leachate extracts from reclaimed asphalt pavement: determination of metals, polycyclic aromatic hydrocarbon and acute toxicity to Daphnia magna
RESUMO Reclaimed Asphalt Pavement (RAP) has a variety of organic and inorganic compounds that can interact with the environment and promote deleterious effects on human health. This study investigated the potential toxicity of RAP through metal determination, polycyclic aromatic hydrocarbon (PAH) analysis and acute toxicity tests with Daphnia magna. Leached
Engenharia Sanitaria e Ambiental. Publicado em: 2022
-
2. Characterization of the solid residue generated in the detoxification step of sugarcane bagasse hemicellulosic hydrolysate and behavior in agricultural soils
ABSTRACT Overliming is an effective way of neutralizing and reducing the toxicity of the hydrolysates generated from acidic pretreatment of lignocellulosic biomass for ethanol production and others biotechnological products. Overliming generates a solid residue whose inadequate disposal may represent an environmental problem. This work aimed at the chemical
Bragantia. Publicado em: 2020-03
-
3. Tolerance of Eucalyptus and Pinus seedlings to exchangeable Aluminium
ABSTRACT: Tolerance to acid soil is an important trait of Eucalyptus and Pinus species introduced into commercial forestry plantations in tropical ecosystems. The objective of this study was to evaluate the effect of the exchangeable Al on growth of the seedlings of two species and one hybrid of Eucalyptus and two species of Pinus. We also wanted to identify
Sci. agric. (Piracicaba, Braz.). Publicado em: 30/05/2019
-
4. Effect of Selenite and Selenate Application on Mineral Composition of Lettuce Plants Cultivated Under Hydroponic Conditions: Nutritional Balance Overview Using a Multifaceted Study
The effect of selenate and selenite enrichment on mineral composition of a red type of lettuce cv. “Veneza roxa” was evaluated using inductively coupled plasma-optical emission spectroscopy (ICP OES), molecular modeling and principal component analysis (PCA). Both Se species did not show toxicity, while selenate promoted the greatest Se accumulation by t
J. Braz. Chem. Soc.. Publicado em: 2018-02
-
5. Actividad de enzimas del estrés oxidativo en plantas de tomate cv. Amalia en respuesta al plomo
ABSTRACT Contamination of soils by heavy metals is a result of human activity, agriculture and industry. Among heavy metals, lead is a potential pollutant that in plants causes numerous symptoms of toxicity such as stunted growth, blackening of the root system and generalized chlorosis. The activity of superoxide dismutase enzyme (SOD; EC 1.15.1.1) and gluta
Hortic. Bras.. Publicado em: 2017-04
-
6. Estimation of some heavy metals in polluted well water and mercury accumulation in broiler organs
The aim of this study was to investigate the relationship between the concentrations of heavy metals in well water and bioaccumulation of the most abundant metals in chicken tissues in some areas in the province of Mecca Almokaramah, Saudi Arabia. Among the heavy metals (Cd, Zn, Cr, Mn, Cu Hg, Pb and Ni) studied, mercury (Hg) revealed highest in concentratio
Braz. arch. biol. technol.. Publicado em: 2013-10
-
7. Evidências de desregulação endócrina causada pela exposição aquática ao alumínio e ao manganês em Astyanax bimaculatus (Linnaeus, 1758) / Evidences of endocrine disruption caused by aquatic exposure to aluminum and manganese in Astyanax bimaculatus (Linnaeus, 1758)
Metals such as Aluminum (Al) and Manganese (Mn) are found in nature as well as in industrial effluents, and can be toxic to aquatic biota, with endocrine disrupting effects, e.g. for fish, which can affect the reproductive performance of a species. Rivers and tributaries of São Paulo State, even in theoretically preserved areas, have shown an increase in th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2012
-
8. Toxicidade do chorume de aterro doméstico : avaliação por meio de biomarcadores em bivalves
Estudos ecotoxicológicos podem ser empregados na avaliação da qualidade de ecossistemas, por meio do uso de biomarcadores, que são alterações em parâmetros em nível subindividual que indicam que um organismo foi exposto a contaminantes. Os bivalves são organismos frequentemente utilizados em estudos ecotoxicológicos e a espécie Corbicula fluminea
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2012
-
9. EFEITO TOXICOGENÉTICO DO POLIMORFISMO ALA16VAL DO GENE MnSOD EM LEUCÓCITOS EXPOSTOS IN VITRO AO METIL MERCÚRIO / TOXIGENETIC EFFECT OF ALA16VAL MnSOD GENE POLYMORPHISM ON LEUCOCYTES IN VITRO EXPOSED TO METHYL MERCURY
The environmental contamination by methyl mercury (MeHg) is a great health public problem in some world regions like Amazonia. The MeHg toxic effects seem to be influenced by environmental and genetic factors. However, there are few studies evaluating the genetic influence on MeHg toxicity in humans. Therefore, the aim of this present study was to evaluate t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/03/2012
-
10. Danos oxidativos promovidos por espécies de Mn(III) sobre biomoléculas e células em situação de estresse / Oxidative damage induced by Mn(III) species over biomolecules and stressed cells
Manganese is an essential trace element, however there is considerable concern regarding its neurological effects when in excess, giving rise to a condition termed manganism which is characterized by Parkinson disease-like symptoms. Most evaluations of manganese toxicity use poorly defined Mn(II) species, although Mn(III) is known to accumulate preferentiall
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/03/2012
-
11. Disponibilidade de Cd em Latossolos e sua transferência e toxicidade para as culturas de alface, arroz e feijão / Cadmium availability in Oxisols and its transfer and toxicity to lettuce, rice and bean crops
O cádmio (Cd) é um elemento potencialmente tóxico para as plantas, animais e homens. O Cd é particularmente perigoso devido à sua mobilidade relativamente alta em solos e transferência para as plantas. Além disso, plantas que crescem em solos contaminados podem acumular Cd nos tecidos comestíveis em grandes quantidades sem qualquer sintoma visível d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
-
12. Estudo do potencial de resÃduos de frutas tropicais para elaboraÃÃo de suplemento alimentar probiÃtico / To study the potential waste of tropical fruits for the preparation of probiotic food supplement
As indÃstrias de processamento de frutas produzem uma grande quantidade de resÃduos, que muitas vezes nÃo recebem atenÃÃo adequada. Esta matÃria-prima apresenta vÃrios constituintes benÃficos à saÃde, que podem ser aplicados na indÃstria alimentÃcia no desenvolvimento de novos produtos. O presente trabalho teve como objetivo determinar a viabilid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011