نتایج جستجو برای: chemical pesticides

تعداد نتایج: 394046  

2013
Yi-hua Gu Yan Li Xue-feng Huang Ju-fen Zheng Jun Yang Hua Diao Yao Yuan Yan Xu Miao Liu Hui-juan Shi Wen-ping Xu

Acetamiprid (ACE) and imidacloprid (IMI) are two major members in the family of neonicotinoid pesticides, which are synthesized with a higher selectivity to insects. The present study determined and compared in vitro effects of ACE, IMI and nicotine on mammalian reproduction by using an integrated testing strategy for reproductive toxicology, which covered sperm quality, sperm penetration into ...

Journal: :Neurochemistry international 2016
C J Carter R A Blizard

The increasing incidence of autism suggests a major environmental influence. Epidemiology has implicated many candidates and genetics many susceptibility genes. Gene/environment interactions in autism were analysed using 206 autism susceptibility genes (ASG's) from the Autworks database to interrogate ∼1 million chemical/gene interactions in the comparative toxicogenomics database. Any bias tow...

2016
Elżbieta Wołejko Bożena Łozowicka Piotr Kaczyński Magdalena Jankowska Jolanta Piekut

The aim of this study was to determine the behaviour of strobilurin and carbocyamides commonly used in chemical protection of lettuce depending on carefully selected effective microorganisms (EM) and yeast (Y). Additionally, the assessment of the chronic health risk during a 2-week experiment was performed. The statistical method for correlation of physico-chemical parameters and time of degrad...

2009
Roberto Pereira

A field experiment was conducted to compare the effectiveness of microbial control agents and chemical pesticides when used on field tomatoes. Treatments included all combinations of chemical, biological or no control of either diseases or insect pests. Irrigation problems prevented uniform development of the crop in the field, and caused one experimental block to have significantly lower yield...

Journal: :Analytical and bioanalytical chemistry 2002
M Farré C Gonçalves S Lacorte D Barceló M F Alpendurada

Two different toxicity tests, an electrochemical biosensor Cellsense and a bioluminescence inhibition assay ToxAlert were performed in order to establish and compare the acute toxicity responses of different types of raw and spiked water for a selected group of pesticides. The selected compounds were endosulfan, chlorfenvinphos, dimethoate, fenamiphos, ametryn, deltamethrin and alpha-cypermethr...

2009
Chihhao Fan Ming - Chu Liao

The purpose of this study is to investigate the chemical degradation of the organophosphorus pesticide of parathion and carbamate insecticide of methomyl in the aqueous phase through Fenton process. With the employment of batch Fenton process, the degradation of the two selected pesticides at different pH, initial concentration, humic acid concentration, and Fenton reagent dosages was explored....

Journal: :Journal of public health management and practice : JPHMP 2010
Megan Sandel Andrea Baeder Asa Bradman Jack Hughes Clifford Mitchell Richard Shaughnessy Tim K Takaro David E Jacobs

Subject matter experts systematically reviewed evidence on the effectiveness of housing interventions that affect health outcomes associated with exposure to chemical agents, such as pesticides, lead, volatile organic compounds, as well as the radon gas. Particulates were also examined, and the role of ventilation on exposures was assessed. The review included both published literature and peer...

Journal: :Environmental science & technology 2011
Natalie A Belsey Sarah F Cordery Annette L Bunge Richard H Guy

Currently, the determination of health risks to pesticide applicators from dermal exposure to these chemicals is assessed using either a concentrate of the compound or a relevant aqueous dilution. Neither of these conditions reflects a normal exposure of an individual when re-entering an area after pesticide application, that is, contact with dried residue of the diluted product on foliage. Met...

2009
Cathy A. Laetz David H. Baldwin Tracy K. Collier Vincent Hebert John D. Stark Nathaniel L. Scholz

BACKGROUND Mixtures of organophosphate and carbamate pesticides are commonly detected in freshwater habitats that support threatened and endangered species of Pacific salmon (Oncorhynchus sp.). These pesticides inhibit the activity of acetylcholinesterase (AChE) and thus have potential to interfere with behaviors that may be essential for salmon survival. Although the effects of individual anti...

Journal: : 2021

Chemical agents (pesticides)are used extensively by modern intensive agriculture to protect agricultural plants from environmental hazards. Pesticide use serves sanitary and hygienic purposes prevent dangerous disease transmission infected blood-feeding athropods remove unwanted vegetation at production facilities. At the same time, very of pesticides might have a negative impact on human body ...

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