除虫

The hapten synthesis of pyrethroids is introduced in this paper, as well as the development of ELISA.

主要介绍了拟除虫菊酯类农药半抗原的合成方法以及酶联免疫分析技术的研究进展和展望。

For the determination of organochlorine and pyrethroid pesticide residues, the sample was extract with petroleum ether.

有机氯和拟除虫菊酯类农药残留测定中，利用石油醚对样品进行提取。

Somebody called for an exterminator?

有人在找除虫员吗？

Methodology: Random sampling in the designated sites in the vegetable producing bases was conducted to collect 120 samples; Gas chromatography and gastity joining flocculus were adopted to test residues of 13 kinds of agro-chemicals such as organic Phosphorus,organic Chlorine and Dalmatian Chrysanthemum Ester remaining on vegetables from the producing bases, free markets and wholesale markets of Hezhou ciaty.

采用随机与定点抽样的方法采集贺州市主要蔬菜生产基地及农贸、批发市场中蔬菜样本120份，采用气相色谱和气质联谱法测定其中13种有机磷、有机氯和拟除虫菊酯类农药残留。

Our company is expertise in selling Foggers from world leading producers, Our sales forces has Successfully covered hygienic, public healthy and pest control fields, Moreover, our special model X-Pert fogger is accepted and used by WHOfor many years.

公司经营的各类顶级品牌的喷雾器，广泛应用于公共卫生防疫和除虫等行业，为多国卫生部门选用，其专业型X-Pert喷雾器被世界卫生组织认可及选用多年。

The development of enzyme immunoassays for the determination of pyrethroid residues were reviewed,including hapten design ,antibody preparation,and immunoassay establishment and applications.

并对拟除虫菊酯类农药通用免疫半抗原设计及多残留酶免疫分析技术的发展趋势进行了探讨。

The comparison of CoMFA results with different lattice spacing and different atom probes was investigated.

用比较分子力场分析研究了拟除虫菊酯类农药的结构与急性毒性LD50的关系，考察了网格结构和探针原子对结果的影响。

Comparative molecular fields analysis has been applied to the studies of the correlation of the pyrethroid and their acute toxicity-LD50.The comparison of CoMFA results with different lattice spacing and different atom probes was investigated.

用比较分子力场分析研究了拟除虫菊酯类农药的结构与急性毒性LD50的关系，考察了网格结构和探针原子对结果的影响。

Usually the Pyrethrin pesticide of vegetables is measured by routine method which needs long time、high cost and is not applicable to/for fast filter of vegetable market.

蔬菜中的拟除虫菊酯类农药的检测一般采用常规方法，此方法检测时间比较长、成本比较高，不适合蔬菜市场上快速的筛选。

The method is a traditional colorimetry and is direct ratio with the content of Pyrethrin pesticide and absorbency in a concentration area. The best absorbency wavelength is 505nm and it is ideal about the recovery.

本方法采用传统的比色法，在一定浓度范围内拟除虫菊酯类农药的含量与吸光度呈正比关系，最佳测定波长为505nm，样品的回收率比较理想。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。