نتایج جستجو برای: pesticide
تعداد نتایج: 13333 فیلتر نتایج به سال:
Pesticide biodegradation is a soil microbial function of critical importance for modern agriculture and its environmental impact. While it was once assumed that this activity was homogeneously distributed at the field scale, mounting evidence indicates that this is rarely the case. Here, we critically examine the literature on spatial variability of pesticide biodegradation in agricultural soil...
This paper presents a framework for chemical product (pesticide) design and analysis. The framework consists of a set of computer-aided methods and tools that have been integrated to tackle the needs with respect to solution of chemical product design problems related to pesticide formulations. Two of the mathematical models (controlled release and pesticide uptake) that provide the principal c...
Background: Pesticide poisoning is very common in Tunisia. Various factors are involved in the analysis of the clinical presentations and the severity of this condition. Major factors are the chemical nature of the pesticides and the quantity entered the body. Methods: This is a retrospective study, reporting the pediatric cases that presented to us with signs and symptoms of pesticide poisoni...
Pesticide residues analysis in Iranian fruits and vegetables by Gas Chromatography-Mass Spectrometry
Pesticide residues in fruits and vegetables are one of the highest concerns of consumers who need food safety. In this study, forty-eight pesticide residues from different chemical structure including organochlorine, organophosphorus, organonitrogen, dicarboximides, strobilurin, triazine, pyrethroids and other chemical groups. in 85 fruits and vegetables were determined and confirmed by GC-MS. ...
BACKGROUND Agricultural pesticide poisoning is a major contributor to the global burden of suicide. Over the last decade there has been a marked decrease in the incidence of suicide worldwide. It is unclear whether pesticide poisoning still plays a significant role in the global incidence of suicide. METHODS WHO method-specific suicide data were supplemented by a systematic review of the lite...
Birds and Pesticides Birds are an important and visible part of our environment and serve as sentinels of general environmental health. In North America, and in many other developed countries, most bird species are protected from unlicensed taking or kill of individuals. Yet one estimate of pesticide effects on U.S. farmland—considered conservative by many avian biologists and advocates—states ...
BACKGROUND Approximately 300 pesticide retailers are currently registered in Tanzania. Inadequate knowledge and unsafe handling practices among retailers may contribute to human pesticide exposure and environmental contamination. This study investigated pesticide retailers' qualifications, work experience, safety practices and the products distributed so as to identify opportunities for prevent...
OBJECTIVES The objectives of this study were to assess the knowledge and practices associated with pesticide use in an agricultural community in Palestine, and to determine the prevalence of self-reported health symptoms related to pesticide exposure. METHODS In this cross-sectional questionnaire study, agricultural farm workers in Nablus district, Palestine, were interviewed on their knowled...
PURPOSE The purpose of the study is to monitor the exposure and health of workers in Great Britain who use pesticides as a part of their job, and to gain a better understanding of the relationship between long-term exposure to pesticides and health. PARTICIPANTS Study participants are professional pesticide users who are certified in the safe use of pesticides or who were born before 1965 and...
BACKGROUND Widespread residential pesticide use throughout the United States has resulted in ubiquitous, low-level pesticide exposure. The mix of active pesticide ingredients is changing in response to 2000-2001 regulations restricting use of the organophosphorus insecticides chlorpyrifos and diazinon. OBJECTIVES We aimed to determine the impact of U.S. Environmental Protection Agency regulat...
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