نتایج جستجو برای: iobc method
تعداد نتایج: 1630119 فیلتر نتایج به سال:
بالتوری سبز، Chrysoperla carnea (Stephens)، یکی از شکارگرهای مهم شته‌ها، پسیل‌ها، سفیدبالک‌ها و تریپس‌ها می‌باشد. در این تحقیق حساسیت حشرات نر و ماده بالتوری سبز به حشره‌کش‌های ایمیداکلوپرید، ایندوکساکارب و اندوسولفان در شرایط آزمایشگاهی ارزیابی شد. زیست‌سنجی به‌روش تماس باقی‌مانده در پتری‌دیش‌ها انجام شد. بنابر نتایج، میزان LC50 برای حشره‌کش‌های ایندوکساکارب، ایمیداکلوپرید و اندوسولفان برای ح...
زنبور Lysiphlebus fabarum Marshall پارازیتوئید داخلی شته سیاه باقلا Aphis fabae Scopoli، یکی از اجزای مهم مدیریت تلفیقی این آفت می باشد که لازم است برهمکنش این زنبور با حشره کش های مورد استفاده در کنترل شیمیایی این آفت مورد مطالعه قرار گیرد. در این مطالعه، اثرات کشندگی غلظت توصیه شده سه حشره کش تیاکلوپرید+دلتامترین، پیریمیکارب و پیمتروزین بر مراحل شفیرگی و حشره کامل زنبور در شرایط آزمایشگا...
all analytical methods are generally based on the measurement of a parameter or parameters which are somehow related to the concentration of the species.an ideal analytical method is one in which the concentration of a species can be measured to a high degree precision and accuracy and with a high sensitivity. unfortunately finding such a method is very difficult or sometimes even impossible.in...
for several years, researchers in familiarity of efl teachers with post-method and its role in second and foreign language learners’ productions have pointed out that the opportunity to plan for a task generally develops language learners’ development (ellis, 2005). it is important to mention that the critical varies in language teaching was shown is the disappearances of the concept of method ...
in the area of vocabulary teaching and learning although much research has been done, only some of it has led to effective techniques of vocabulary teaching and many language learners still have problem learning vocabulary. the urge behind this study was to investigate three methods of teaching words. the first one was teaching words in context based on a traditional method of teaching that is,...
Nesidiocoris tenuis (Reuter, 1895) (Hemiptera: Miridae) is the most widely used biological control agent of tomato pests, particularly leafminer. Five treatments, spinetoram, chlorantraniliprole + abamectin, thiamethoxam, emamectin benzoate and dimethoate were tested on N. under greenhouse conditions in summer autumn 2018 Malatya Province, Turkey. After insecticide application, counted days 1, ...
abstract according to increase in electricity consumption in one hand and power systemsreliability importance in another , fault location detection techniqueshave beenrecentlytaken to consideration. an algorithm based on collected data from both transmission line endsproposed in this thesis. in order to reducecapacitance effects of transmission line, distributed parametersof transmission line...
The impact of commonly used organophosphate (chlorpyrifos, methamidophos), carbamate (carbaryl), and pyrethroid (cypermethrin) insecticides on insect natural enemies was compared with that of a nucleopolyhedrovirus (Baculoviridae) of Spodoptera frugiperda (J. E. Smith) (Lepidoptera Noctuidae) in maize grown in southern Mexico. Analyses of the SELECTV and Koppert Side Effects (IOBC) databases on...
in this thesis, using concepts of wavelets theory some methods of the solving optimal control problems (ocps). governed by time-delay systems is investigated. this thesis contains two parts. first, the method of obtaining of the ocps in time delay systems by linear legendre multiwavelets is presented. the main advantage of the meth...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید