Πλοήγηση ανά Θέμα "COPPER"
Αποτελέσματα 1-18 από 18
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Availability of Cu and Zn in an acidic sludge-amended soil as affected by zeolite application and liming
(2012)Purpose Acidic soils exhibit high trace element availability compared to neutral pH soils, and thus, when trace metals are added (e. g. due to sewage sludge application), measures should be taken to reduce their mobility. ... -
Bioavailability and toxicity of heavy metals in the presence of natural organic matter
(2006)The effect of humic acids (HA) on the toxicity of copper, zinc and lead was investigated in this study, using the photobacterium Vibrio fischeri (Microtox test) as a test organism. The metal species and the complexation ... -
Cation vacancy diffusion on the NiO(001) surface by molecular dynamics simulations
(1999)We present results concerning the cation vacancy diffusion mechanisms occurring on the NiO(001) surface along with their corresponding migration energies. Using a rigid ion potential and molecular dynamics simulations we ... -
Comparison of heavy metal concentrations in fish samples from three fish farms (Eastern Mediterranean) utilizing antifouling paints
(2015)Although aquaculture is considered the fastest growing food production industry, nevertheless there is little information regarding pollutant levels in cultured fish. Samples of cultured sea bass - Dicentrarchus labrax ... -
Elastic properties of nanostructured materials with layered grain boundary structure
(2007)Atomistic calculations of the elastic constants for a bulk nanostructured material that consists of a layered structure where alternating layers meet along high angle grain boundaries and where atoms interact via a ... -
An EPR study of Cu adsorption by clinoptilolite from Cl-, NO3 and SO42- solutions
(2008)The concentration and the type of Cu2+ species adsorbed on a natural zeolite (Clinoptilolite) was measured and studied by using Electron Paramagnetic Resonance Spectroscopy (EPR). The EPR results together with macroscopic ... -
Ethanol decomposition over Pd-based catalyst in the presence of steam
(2002)Catalytic decomposition of ethanol in the presence of steam over Pd supported on a porous carbonaceous material was studied. XPS and TEM were used for the catalyst characterization. Experiments were performed under atmospheric ... -
Finite Element Analysis of Discrete Circular Dislocations
(2010)The present work gives a systematic and rigorous implementation of (edge type) circular Volterra dislocation loops in ordinary axisymmetric finite elements using the thermal analogue and the integral representation of ... -
Fish farming and anti-fouling paints: a potential source of Cu and Zn in farmed fish
(2014)The accumulation of copper and zinc, the basic components of anti-fouling paints, was examined in cultured sea bass Dicentrarchus labrax and sea bream Sparus aurata. Samplings were carried out at 4 eastern Mediterranean ... -
Heavy metal concentrations in soils and irrigation waters in Thessaly region, Central Greece
(2005)The purpose of this work was to provide information on heavy metals concentrations in soils and in irrigation water in Thessaly, Central Greece, where tobacco (Nicotiana tabacum) is cultivated. Tobacco tends to accumulate ... -
Impact of New Soil Amendments on the Uptake of Lead by Crops
(2013)In the present article, the reclamation of lead (Pb)-contaminated soils by adding zeolite, bentonite, goethite, and two newly produced adsorbents consisting of zeolite and goethite (systems I and II) was studied. These ... -
Influence of some soil parameters on heavy metals accumulation by vegetables grown in agricultural soils of different soil orders
(2008)The main purpose of this research was to determine the levels of heavy metals in tomato, potato and lettuce, grown in agricultural soils of different soil orders (Alfisols, Endisols and Vertisols), located at Central Greece. ... -
Interactive toxic effects of heavy metals and humic acids on Vibrio fischeri
(2006)The effect of humic acids (HAs) on the toxicity of copper, zinc, and lead was investigated using the photobacterium Vibrio fischeri (Microtox test) as a test organism. The effects of HAs on metal toxicity were evaluated ... -
MECHANISMS OF METAL FUME FEVER AND ITS PROVOCATION BY SELECTED METALS
(2012)Metal Fume Fever (MFF) is a constellation of influenza-like signs and symptoms, commonly occurring in workers operating galvanizing processes and welders. Its mechanism probably involves cytokine-driven activation of white ... -
Synthesis gas production by steam reforming of ethanol
(2001)A two-layer fixed-bed catalytic reactor for syngas production by steam reforming of ethanol has been proposed. In the reactor, ethanol is first converted to a mixture of methane, carbon oxides and hydrogen over a Pd-based ... -
Thermomechanical Modeling of Laser Spot Welded Solar Absorbers
(2015)A finite element (FE) approach is developed to investigate the laser spot welding (LSW) of flat-plate solar absorbers and the stress and distortion fields that develop after fabrication and during operation. Numerical ... -
Toxicity effects of bisphenol A to the nauplii of the brine shrimp Artemia franciscana
(2013)Toxicity responses of Artemia franciscano to the endocrine disrupter bisphenol A (BPA) were investigated. Exposure of Artemia nauplii (instar II-III) to BPA for 24 hrs and 48 hrs demonstrated LC50 values of 44.8 mg l(-1) ... -
Use of Modified Zeolites for the Remediation of Waters and Cultivated Soils from Cu(II)
(2012)The ability of iron oxides (goethite) and natural zeolite (clinoptilolite) to adsorb copper from its aqueous solutions was extensively studied in the past. In this paper, the production of modified zeolites (systems I and ...