نتایج جستجو برای: an culicifacies

تعداد نتایج: 5683643  

Journal: :The Southeast Asian journal of tropical medicine and public health 1992
V Vasuki A R Rajavel

Beta-cyfluthrin (OMS 3051), a new synthetic pyrethroid and one of the stereoisomers of cyfluthrin, was studied for insecticidal activity against eight mosquito species. Its larvicidal activity with LC50 values of 5.62 x 10(-5) and 1.19 x 10(-4) mg/l respectively for Culex quinquefasciatus and Aedes aegypti was comparable with that of deltamethrin. This pyrethroid was more effective against the ...

Journal: :Cell 2021

(Cell 184, 1693–1705.e1–e17; April 1, 2021) We failed to cite two relevant papers in the Discussion of our paper. Our study reports on horizontal transfer a plant gene whiteflies, allowing these insects neutralize common defense compounds. By demonstrating function we highlight evolutionary implications for plant-insect interactions and show potential findings pest control by silencing via gene...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد 1389

فرایند تشکیل کمپلکس کاتیون +y3 با لیگاند درشت حلقوی n-phenylaza-15-crown- 5 در حلال های غیر مائی استونیتریل(an) ، متانول(meoh) و پروپانول (proh) و مخلوط دو جزئی حلال های استونیتریل – متانول (an/meoh)، استونیتریل – پروپانول (an/proh)، استونیتریل – 1و2 دی کلرواتان (an/dce) و استونیتریل – آب (an/ h2o) و همچنین واکنش تشکیل کمپلکس کاتیون +zro2 با لیگاند dibenzo-18-crown-6 در مخلوط دو جزئی حلال های ا...

1996
Erica Melis

In recent years several computational systems and techniques for theorem proving by analogy have been developed. The obvious practical question, however, as to whether and when to use analogy has been neglected badly in these developments. This paper addresses this question , identiies situations where analogy is useful, and discusses the merits of theorem proving by analogy in these situations...

2011
CHRISTOPHER B. CROKE

We consider the scattering and lens rigidity of compact surfaces with boundary that have a trapped geodesic. In particular we show that the flat cylinder and the flat Möbius strip are determined by their lens data. We also see by example that the flat Möbius strip is not determined by it’s scattering data. We then consider the case of negatively curved cylinders with convex boundary and show th...

Journal: :Chemical communications 2015
Weihua Zheng Jingtian Hu Zheshen Han Zixing Wang Zhen Zheng James Langer James Economy

Hybrid porous carbon fibers with strong anion-exchangeable functional groups (HACAX) were synthesized by alkylation of pyrolyzed polyacrylonitrile. HACAX exhibits generic stable positively charged functional groups. This expands the applications of porous carbon media for interacting with anions without adjusting pH, such as Cr(vi) adsorption at natural pH.

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