نتایج جستجو برای: cadmium pollution
تعداد نتایج: 92039 فیلتر نتایج به سال:
the pollution of soil by heavy metals is considered to be quite a big problem in many areas ofthe world. to limit the accumulation of lead and cadmium from soil in the products, a correct understanding ofthe characteristics and specifications of the translocation of cadmium and lead is necessary. in order to evaluatethe effects of cadmium and lead interaction on zinc and manganese concentration...
The first section of this chapter describes general pollution prevention techniques for plating solutions and covers housekeeping, monitoring, additives, equipment modification, and on-site recycling and recovery. The next section covers general issues in pollution prevention for cyanide-based plating. The next seven sections cover pollution prevention options for plating specific metals such a...
Introduction: Using bio-indicators, like birds' feathers can represent bio-transference of pollutants in the environment components better. This study was conducted to study and interpolate heavy metal pollution in laughing dove’s feather as a bio-indicator. Method: The heavy metals of Lead and Cadmium were studied in both western and eastern zones of Yazd by feather of laughing dove (Sp...
Cadmium is a modern toxic metal and is a by-product of zinc and lead mining and smelting, which are important sources of environmental pollution. In humans, the kidney is recognized as the most critical organ affected by chronic exposure to cadmium. The present study was designed to explore the renotoxic effects of intraperitoneal acute administration of CdCl2 (0.32 mg/kg b.w.) in albino mice. ...
The impact of an infection with a parasite and a simultaneous cadmium exposure on the stress hormone levels of rats was studied. To this end, we introduce a nonlinear heteroscedastic model, which is able to describe the temporal evolution of cortisol concentrations in groups of rats treated by cadmium or parasite infection. A thorough analysis gives strong evidence that parasitic infection and ...
This paper describes a pilot study of lead, manganese, and cadmium content in thoracic particle fraction and high-risk respirable fraction of airborne particles. Samples were collected at one measuring site in Zagreb during autumn 1998 and spring 1999. The results show that the total heavy metal contents is found in the high-risk respirable particle fraction, and point to two main pollution sou...
conserving water resources and protecting them from pollution are of high account in the natural cycle of our life. this study has tried to determine the refining potential and capacity of water hyacinth (eichhornia crassipes) in order to remove the cadmium from water, studying the influence of factors such as initial concentration of cadmium, contact time, absorbent mass, and ph. results have ...
The effect of chronic exposure to a low concentration (0.5 microg l(-1)) of cadmium ions was investigated on escape behaviour of sea bass, Dicentrarchus labrax, using video analysis. Observations were also performed on the microanatomy of lateral system neuromasts. When fish were exposed for 4h per day over 8 days to the cadmium ions, most of both types of neuromasts observed remained intact. H...
Environmental pollution especially with heavy metals poses serious problem on product synthesis of medicinal plants cultivated in the field. Accordingly, the purpose of this study was to assess in vitro effects of cadmium as abiotic elicitor on phytoestrogens production by Psoralea corylifolia hairy roots. Transformed hairy roots were developed by genetic transformation using Agrobacterium rhiz...
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