In the experiment, the neutron background level has been studied by using uranium fission chambers and the method of shielding.

In the experiment, the neutron background was studied by using depleted uranium fission chamber and the method of shielding.

When using low-tension shielding method to measure the insulation level of the stator of large water-cooled hydro-generator,various influential factors lead the measurement to untrue result;therefore,these influential factors are analyzed and improving measures are proposed.

A novel technique to generate inductively coupled plasma(ICP) with high density has been successfully developed,in which a symmetrical,uniform and spoke-shaped Faraday shield is installed between the inductive coil and the dielectric window in the ICP source.

In order to minimize the influence of the modification to the hardware,it makes some improvements to the additive masking AES algorithm and employs such methods as module reuse and altering calculation order to reduce chip area and maintain its speed.

The Screen Electrode Method(SEM) is an electro-exploring method which can emphasize anomaly of the deep object and increase the detecting depth of the electro-exploring method through changing the distribution of the underground current density by the current compensate electrode.