نتایج جستجو برای: 2 compounds of toxic metals
تعداد نتایج: 21487053 فیلتر نتایج به سال:
Point and nonpoint sources of nutrients, sediments, metals, and organic compounds from industrial, agricultural, and urban land uses are important water-quality issues in the Study Unit. Degradation of streams, including the loss of riparian habitat, reduction in fish populations, loss of habitat for bottom-dwelling organisms, eutrophication, and deterioration of the sanitary quality of streams...
The onset of non-communicable disease has been attributed in large part to environmental exposure to toxic chemicals, including persistent organic pollutants, volatile and semi-volatile organic compounds and transition metals. This review summarizes recent research into the causes and mechanisms of environmental disease onset and examines the role of oxidative stress as well as steps that can b...
Background: The removal of toxic metals from sewage and wastewaters is one of the most important concerns in the twenty first century. The removal of poisonous Cr(VI) from aqueous solution by different low-cost available nanoporous adsorbents was investigated in the present study. Methods: Fumed silica, bentonite (BN), hydrotalcite (HT), MCM-41, Na-Y, mordenite (MOR) and SAPO-34 were ...
The intracellular compartmentation of essential and toxic metals is of intense scientific interest because of its potential for adding to our understanding of both normal homeostatic mechanisms for metals and of the mechanisms which underlie metal-induced cell injury. High-affinity metal-binding proteins, lysosomes, and precipitates such as inclusion bodies or concretions, play major roles in t...
It will soon be twenty years since the last chelating agent was clinically approved to used against toxic metals. Even though metal poisoning has been known humankind for centuries, only about a dozen compounds, all of which are small molecules, compose pharmaceutical toolbox expel intrinsically or essential but misregulated These compounds widely suffer from various drawbacks, most critically,...
Background and objective: Compost is beneficial for conditioning the structure and nutrient content of soil. Toxic metals are the most important contaminants that can enter the food chain through the compost products and affect human health. The aim of this study was to assess the arsenic, mercury, cadmium, and lead levels in six brands of vermicompost produced from the organic solid wastes in ...
Background and objectives: Cuminum cyminum from Apiaceae family is a common medicinal plant. The fruits of this plant are the second most popular spice after Piper nigrum in the world. It is used in cooking as flavoring and also it has been used for treatment of toothache, epilepsy, diarrhea,emphysema and gastrointestinal problems in Iranian traditional medici...
in this thesis, phosphorus ylides [phbppy], [no2bppy] and [brbppy] have been synthesized through the formation of phosphonium salt and dihydrogenation, followed by the reaction of pd(oac)2 and the orthopalladated dinuclear complexes [pd(?-cl)(phbppy)]2, [pd(?-cl)(no2bppy)]2 and [pd(?-cl)(brbppy)]2 have been produced. the reaction of dinuclear complexes and bidentate ligands [l = bipy (2,2-bipyr...
Background and Objective: Batteries can be hazardous to the environment and human health due to their toxic compounds. In this study, for detoxification and recovery of metals from spent coin batteries, a two-step bioleaching using Acidithiobacillus ferrooxidans was investigated. Materials and Methods: A number of spent coin batteries were powdered. The powder was added to the bacterial cultur...
industrial waste management is one of the most properly approaches which make industry and environment collaborating and coacting as well as reduce impacts of industry on environment. in this study, present management of yazd industrial township located in yazd province was studied. in order to properly manage and control waste production, questionnaires were used to collect data regarding type...
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