نتایج جستجو برای: chemical pesticides
تعداد نتایج: 394046 فیلتر نتایج به سال:
objective: the purpose of this work was to compare dna damage, acetylcholinesterase (ache) activity, inflammatory markers and clinical symptoms in farmers exposed to organophosphorus pesticides to individuals that had no pesticide exposure. materials and methods: we conducted a cross-sectional survey with a total of 134 people. the subject group consisted of 67 farmers who were exposed to organ...
In current study, the effects of Iranian rice cooking method (Kateh) on residue levels of 41 pesticides were investigated. The pesticides were selected according to Iranian National Standards Organization (INSO) regulations and covered 18 permitted and 23 banned pesticides belonging to different chemical classes such as organophosphate, triazole, and carbamate. A 250 g portion of rice sample wa...
High Sperm Density Among Members of Organic Farmers Association "In a Danish study of reproductive effects of pesticides in male greenhouse workers, we found an unexpectedly high sperm density in members of an association of organic farmers, who manufacture their products without use of pesticides or chemical fertilisers. This is of interest in the light of evidence that indicates a world-wide ...
The protection of human health from the adverse effects of cumulative environmental exposure to chemical mixtures is an important issue. Of particular interest is the detection and characterization of interaction among chemicals in complex mixtures. Response surface methodology, often supported by factorial designs, is the classical statistical experimental approach. Fixed-ratio ray designs, wh...
for the first time, a multi-residue methodfor simultaneous determination of 41lc-amenable pesticides in rice, belonging to different chemical classes has been developed in iran by lc-ms/ms. the pesticides were analyzed simultaneously in a single run using positive electrospray ionization with multiple reaction monitoring (mrm) after extraction with slightly modified quechers method. the calibra...
Organophosphorus (OP) compounds constitute a heterogeneous category of chemicals specifically designed for the control of pests, weeds or plant diseases. Our review article mainly focused on OP poisoning, especially with pesticides, its severity and management of toxic exposure. We developed a search strategy to find publications about OP poisoning and its management. So, we searched Science Di...
Production of adequate supplies of food and fiber currently requires that pesticides be used to limit crop losses caused by insects, pathogens, weeds and other pests. Although pesticides are necessary in today' s agriculture, they can be a serious problem if they reach and contaminate ground water, especially where drinking water needs are met by ground water. The relative reduction of potentia...
Pesticides released into the environment may pose both ecological and human health risks. Governments set the regulations and guidelines for the allowable levels of active components of pesticides in various exposure sources, including drinking water. Several pesticide risk indicators have been developed using various methodologies, but such indicators are seldom used for the selection of pesti...
In recent decades, due to the negative effects of conventional farming on human health and the environment, the organic farming is taken into consideration in order to produce healthy food materials. The aim of the present study was to assess the greenhouse owners’ knowledge, attitude, and practice with respect to healthy cucumber and tomato production in greenhouse farming systems in Isf...
The intricate balance that is the hallmark of the immune system shows vulnerability to any chemical, including pesticides, that can cause structural and functional alterations to the system. The immunotoxic effects of xenobiotics include: histopathologic effects in immune tissues and organs; cellular pathology; altered maturation of immunocompetent cells; changes in B and T cell subpopulations;...
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