نتایج جستجو برای: recommended concentration of three pesticides

تعداد نتایج: 21222526  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1390

this thesis attempts to study the representations of the third-world intellectuals in three fictional works by the british-educated trinidadian nobel-winner v. s. naipaul: the mimic men, a bend in the river, and magic seeds. the first one recounts the story of ralph singh’s sense of alienation, his experiences as a colonial politician, and his struggle to give order to his disorderly world thro...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده علوم انسانی 1390

this study examined the effects of collaborative strategic reading and direct instruction in persuasion on iranian high school students persuasive writing and attitudes. students in three intact classes were assigned to one of three treatment conditions: collaborative strategic reading and direct instruction in persuasion or direct instruction in persuasion or a control group. treatment effects...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...

Journal: :iranian journal of pharmaceutical research 0
maryam amirahmadi 1- department of pharmacology and toxicology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- food and drug laboratories research center, ministry of health and medical education, tehran, iran. 3- food and drug control laboratories, food and drug deputy, ministry of health and medical education, tehran, iran. hassan yazdanpanah 1- department of pharmacology and toxicology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- food and drug laboratories research center, ministry of health and medical education, tehran, iran. shahram shoeibi 1- food and drug laboratories research center, ministry of health and medical education, tehran, iran. 2- food and drug control laboratories, food and drug deputy, ministry of health and medical education, tehran, iran. morteza pirali-hamedani 1- food and drug laboratories research center, ministry of health and medical education, tehran, iran. 2- food and drug control laboratories, food and drug deputy, ministry of health and medical education, tehran, iran. 3- department of pharmacology, school of pharmacy, tehran university of medical sciences, tehran, iran. mahsa ostad gholami 1- food and drug laboratories research center, ministry of health and medical education, tehran, iran. 2- food and drug control laboratories, food and drug deputy, ministry of health and medical education, tehran, iran. mohammad farshid mohseninia 1- food and drug laboratories research center, ministry of health and medical education, tehran, iran. 2- food and drug control laboratories, food and drug deputy, ministry of health and medical education, tehran, iran.

a reliable, rapid and accurate method based on spiked calibration curves and direct sample introduction was developed for determination of 17 pesticide residues in rice by gas chromatography-mass spectrometry single quadrupole selected ion monitoring gc/ms-sq-sim. sample preparation is based on extraction with acetonitrile without clean up. the use of spiked calibration curves for constructing ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1390

this study was designed and conducted to find out if there is any significant relationship between iranian efl learners preferance for one of the three degrees of obtrusiveness in foreign language instruction (focus on form, forms and meaning) and their preferred experiential learing style. to collect the data two questionnaires were used. the first one on the degree of obtrusiveness and the se...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده علوم زمین 1388

three medium magnitude events happened inside the transitional border of south alborz and central iran; namely kahak-qom 2007/06/18 event with ml 5.6, zanjan 2008/05/27 event with ml 5.3 and aradan-garmsar 2007/11/19 event with ml 5.1. this provides us the opportunity to compute focal mechanism and stress drop of the events and compare them with those events happened within the alborz range.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1392

this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...

2014
Attaollah Shakouri Hassan Yazdanpanah Mohammad Hossein Shojaee Farzad Kobarfard

A multi-residue method for simultaneous determination of 41 LC-amenable pesticides in rice, belonging to different chemical classes has been developed in Iran by LC-MS/MS. For the first time 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 calibr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

fuzzy logic has been developed over the past three decades into a widely applied techinque in classification and control engineering. today fuzzy logic control is one of the most important applications of fuzzy set theory and specially fuzzy logic. there are two general approachs for using of fuzzy control, software and hardware. integrated circuits as a solution for hardware realization are us...

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