【Objective】In this paper, the relationship of the resistance of the common cutworm, Spodoptera litura Fabricius, to lambda-cyhalothrin and cuticular penetration of lambda-cyhalothrin was studied.

The cuticular penetration of chlorpyrifos-avermectin B 1a mixture studies on larvae of Helicoverpa armigera Hübner by HPLC with Eclipse XDB-C 18 column (4.

The cuticular penetration ability of mixture, chlorpyrifos and avermectin Bia to Helicaverpa armigera Hubner were studied by using HPLC.

In view of the problem that the resolution and penetrating depth of the SFGPR target images are limited by the system noise and underground medium loss, the MUSIC is proposed for signal processing of SFGPR to get the depth information of the targets.

Air-or vehicle-borne ground penetrating synthetic aperture radar(GPSAR) has the capability to detect landmines and landmine fields over large area from a standoff distance quickly,which is the trend of landmine detection.

The effect of the corona charging, electric field polarizing and neutralizing particles cases on the commercial fibrous filter filtrating fly ash has been investigated experimentally, including pressure drop, penetration and the change of the single particle charge between upstream and downstream.

Measurements of mean residence time and penetration of submicrometer aerosols in flows in tubes were made within the range of Reynolds numbers from 0.