防蚊剂

Dichlorvos was once a good product and widely used for its outstanding effect on knocking down insects and easy volatilizing. But DDVP and chlorpyrifos are limited to use for the reason of safety. According to the recommendation of WHO, a new miticide,pirimiphos-methyl, was developed by Hunan chemical academy in 1999. It can be used for controlling mosquitoes, flies, cockroaches and mites et al.

有机磷杀虫剂中的敌敌畏由于具有击倒作用与杀灭能力较强，又有自然挥发功能，所以，是应用最广的品种，但DDVP在卫生杀虫剂中已处于限制使用状态。1999年，湖南化工研究院，根据WHO的推荐，研制开发了广谱，速效杀虫，杀螨剂—甲基嘧啶磷，可用于防制蚊，蝇，蟑螂和螨等。

Pipiens and Phlebotomus papatasi effects of laundering and time of exposure.J.

醚菊酯与残杀威混剂对蚊虫有更强的触杀作用，处理衣服会有更好的防蚊效果。

"There's been many studies that have shown that things like citronella , tea-tree oil, eucalyptus oil give very, very poor protection," Doggett says.

&目前已经有许多学术证明表明了含有香茅、荼树油、桉树油的防蚊剂的功效微乎其微。&

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。