Natural circulation ability of PWR coolant system under ocean condition is analyzed with the self developed MathCAD programs based on the mathematical simulation model.

The situation of swing for ocean condition is emphatically analyzed and calculated.

Based on the drift flux model,the natural circulation theory analysis models of nuclear power plant(NPP) under ocean condition were established.

A study on the exploition and the sustainable utilization of marine resources in the Bohai Sea;

Studies on the rational exploration and utilization of marine resources in Fujian;

The assets categorization and management of marine resources;

Strategy of sustainable development of marine resources and preservation of marine environment;

Seaweed is an important marine resource in China.

Introduce 4 practices and experiences in developing and utilizing marine resources of Xiangshui County: 1) to insist on pluralistic investment; 2) to insist on culturing multi varieties; 3) to insist on developing multi areas; 4) to optimize development environment and to speed up the pace for investing software construction.

Therefore it is high time for us to know more and exploit further our oceanic resources through high-tech methods.

From the angle of enhancing the resouvces ucing and pvoductivity,the thesis analyses and compares the states of oceanic resources,the situation of matching of oceanic resouves to oceeanic industries of Hebei province in the Bohai Sea Bay Area,finding the superiovity and the matters in exploiting resources and developing economy.

A Probe into the definition and relationship of property rights of China s ocean resources assets;

Exploitation and its countermeasures of ocean resources in Fujian;

Basic requirement analysis was made on large amount of data from ocean engineering and ocean resources detecting and utilizing in China.