نتایج جستجو برای: op an agricultural by

تعداد نتایج: 9657770  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده ادبیات، زبانهای خارجی و تاریخ 1391

the present study sought to examine whether a task-based approach could have an impact on raising awareness of collocations. moreover, it sought to investigate the facilitative role of consciousness-raising tasks of collocations in the communicative instances of use. to this end, 68 intermediate learners of english were selected via a placement test. the participants were taught with classroom ...

Journal: :Occupational and environmental medicine 2014
Jean Strelitz Lawrence S Engel Matthew C Keifer

OBJECTIVE Agricultural pesticide handlers are at an elevated risk for overexposure to organophosphate (OP) pesticides, but symptoms can be difficult to recognise, making biomarkers invaluable for diagnosis. Occupational monitoring programmes for cholinesterase depression generally rely on measuring activity of either of the two common blood cholinesterases which serve as proxy measurements for ...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده ادبیات و زبانهای خارجی 1390

this study investigated the effects of planning on second-language written production with regard to task type. the participants were 75 iranian learners of english as a foreign language attending a private foreign language institution. they were asked to complete two different types of writing tasks (expository writing task and argumentative writing task) in different planned conditions (indiv...

2009
S. K. Rastogi P. V. V. Satyanarayan D. Ravishankar Sachin Tripathi

Oxidative stress status and Acetylcholinesterase (AChE) activity were studied in blood samples obtained from 61 agricultural workers engaged in spraying organophosphorus (OP) insecticides in the mango plantation, with a minimum work history of one year, in the age range of 12-55 years. Controls were age-matched, unexposed workers, who never had any exposure to OP pesticides. They were evaluated...

Affected by globalization and increased complexity, supply chain managers have learned about the importance of Sales and Operations Planning (S&OP). However, in large scale supply chains, S&OP has received little attention, by both academics and practitioners. The purpose of this manuscript is to investigate the advantages of S&OP process using a mathematical modeling approach in a large scale ...

2008
Frank G. Zalom Nick C. Toscano Frank J. Byrne

I are often referred to as having a broad or narrow spectrum of activity, depending on the diversity of pest species they kill. Narrow-spectrum insecticides are generally thought of as being less disruptive to biological control and more environmentally benign because of their specificity to a few target pest species. In the presence of a complex pest community, however, use of an insecticide w...

Journal: :journal of current ophthalmology 0
مرتضی مواسات morteza movasat محسن مدرسی mohsen modarresi محمدرضا منصوری mohammad-reza mansouri مهدی نیلی احمدآبادی mehdi nili-ahmadabadi محمدطاهر رجبی mohammad-taher rajabi

purpose: to study recordings of oscillatory potentials (ops) of the electroretinogram (erg) in diabetic eyes that have no visible fundus alterations, to ascertain whether changes in sensitivity are evident when compared with recordings from age-matched controls. methods: ops of the erg were measured from 68 eyes of 34 patients with diabetes without retinopathy and from 30 eyes of 15 normal subj...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

Organophosphorus (OP) compounds are cholinesterase inhibitors widely used as pesticides in agriculture and nerve agents in battlefields. Exposure to these compounds leads to accumulation of acetylcholine at cholinergic synapses and overstimulation of muscarinic and nicotinic receptors by inhibiting the enzyme acetylcholinesterase. Seizure activity is one of the major manifestations of OP poison...

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