In order to determine retire time limit of aircraft scientific and reasonable,aimed at aircraft use situation in the army,take a certain type aircraft as an example,aircraft residual life is analyzed detailed.

Discussion on some issues of environmental impact assessment (EIA) on the decommissioning of uranium prospecting facilities;

Noticeable problems concerning radioactive waste treatment of decommissioning nuclear installations;

The study of evaluation indication system for the nuclear facility decommissioning economics;

Study of Estimating Method for Residual Radioactive on Decommissioning Nuclear Establishment;

During the process of decommissioning of the nuclear facilities,we can hold the information fully of the radioactivity radiation of the decommissioning nuclear fa.

This artical introduced some conceptions of nuclear facilities decommission,and three basic principles(responsibility for national land cleanness,responsibility for descendants and responsibility for exploitation of national land) during the decommissioning.

The main factors of tactical missile weaponry out of service are analysed and the assessment models of every factor are established, using the fuzzy cluster model to carry on quantitative analysis to the retirement of tactical missile weaponry.

The investigation contented the reasons,preparation and adaptation in the process of retirement.

With the ongoing of our economic reform, the question about the athlete s employment after retirement has become more serious.

The Study on Psychological Adjustment Factors and Carreer Transition of Outstanding Athletes′ Retirement in Our Country;

Because of retired athlete own quality and the ability insufficiency,and with the trans- form of the society and imperfect the legislation of retires athlete employment safeguard,they are in the difficult dilemma in the employment competition.

In this paper,the author analysis the reasons that cause the problem of difficulties in getting a job for retired athlete.