نتایج جستجو برای: ovicidal effect

تعداد نتایج: 1641857  

Journal: :Journal of economic entomology 2003
Won-Il Choi Eun-Hee Lee Byeoung-Ryeol Choi Hyung-Man Park Young-Joon Ahn

A total of 53 plant essential oils were tested for their insecticidal activities against eggs, nymphs, and adults of Trialeurodes vaporariorum Westwood, using an impregnated filter paper bioassays without allowing direct contact. Responses varied according to oil type and dose, and developmental stage of the insect. Bay, caraway seed, clove leaf, lemon eucalyptus, lime dis 5 F, pennyroyal, pepp...

Journal: :Molecules and cells 2016
Seeta Poudel Youngseok Lee

Coumarin is a phenolic compound that mainly affects the liver due to its metabolization into a toxic compound. The deterrent and ovicidal activities of coumarin in insect models such as Drosophila melanogaster have been reported. Here we explore the molecular mechanisms by which these insects protect themselves and their eggs from this toxic plant metabolite. Coumarin was fatal to the flies in ...

2012
Rania S. Hamza Ashraf S. Metwaly Dalia A. Abo El-Maaty Dalia Abdel Khalik

Background: Schistosomiasis is a chronic debilitating parasitic disease. Long-term repeated use of praziquantel (PZQ) for control of the disease morbidity may lead to resistance or reduced susceptibility to the drug. Artemether (ART), the anti-malarial drug may become an alternative therapy to PZQ as it also displays anti-schistosomal properties. Objective: To assess the effects of artemether e...

Journal: :iranian journal of parasitology 0
faezeh najafi dept. of parasitology and mycology, school of public health, tehran university of medical sciences, tehran, iran sasan rezaie dept. of parasitology and mycology, school of public health, tehran university of medical sciences, tehran, iran eshrat beigom kia dept. of parasitology and mycology, school of public health, tehran university of medical sciences, tehran, iran mahmoud mahmoudi dept. of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran mehdi mohebali dept. of parasitology and mycology, school of public health, tehran university of medical sciences, tehran, iran center for research of endemic parasites of iran (crepi), tehran university of medical sciences, tehran, iran mohammad javad gharagozlou dept. of pathobiology, faculty of veterinary medicine, university of tehran, tehran, iran

background: fascioliasis is a zoonotic disease caused by the liver fluke fasciola hepatica . drug resistance, high costs of treatment and economic losses in meat production have emerged the need of alternative control measures into consideration. the aim of this study was to evaluate the in vitro ovicidal activity of paecilomyces lilacinus fungus on f. hepatica eggs. methods: p. lilacinus isola...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده ادبیات و علوم انسانی 1389

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

پایان نامه :0 1374

the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

2009
V. M. Jadhav Varsha M. Jadhav

World Health Organization appreciated the importance of medicinal plants for public health care in developing nations. Eclipta alba ( Bhringaraja ) having important role in the traditional Ayurvedic and Unani systems of holistic health and herbal medicine of the east.The principal constituents of Eclipta alba are coumestan derivatives like wedololactone[1.6%], demethylwedelolactone, desmethyl-w...

2010
Jorg Heukelbach Fabiola A. Oliveira Joachim Richter Dieter Häussinger

Resistance of head lice to insecticides with a neurotoxic mode of action, such as permethrin and malathion, is increasing in incidence and geographic extent. As a consequence, physically acting pediculicidal products have emerged. Dimeticones are synthetic silicone oils of low surface tension and can therefore coat most surfaces, thus also killing head lice (Pediculus humanus capitis) by physic...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1392

هدف این مطالعه تعیین کردن این مساله است که آیا فراگیران فارسی زبان قادر به تطبیق پارامتری ضمیر موصولی that در جملات ساده و پیچیده ی انگلیسی در سایه اصل دستور جهانی هستند یا خیر. به علاوه نقش جنسیت در رابطه با آزمون تشخیص درستی یا نادرستی جملات دستوری مورد بررسی قرار گرفت. داده ها از 54 دانشجوی فراگیر زبان انگلیسی در دانشگاه فردوسی مشهد گردآوری شد. شرکت کنندگان در آزمون شامل 28 زن (51.85 درصد)و ...

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