1. A new type of organic restrainer RC is introduced for separation of pyrite from chalcopyrite .

2. By using orthogonal experimental approach, a new restrainer DY-1 is developed.

3. To reasonably design the girder falling restrainer, the nonlinear seismic response of the restrainer was investigated considering the failure process of the bearings.

4. The restrainer should at least afford the weight of the girder.

5. Characterization is made of two coal dust samples and several types of coal dust restrainer have been developed based on surface behavior of dust particle.

6. Supervises ENs and Nursing Aid's job such as tube feeding; grooming; toileting and usage of body restrainer.

7. The temperature of olkaline solution and degreasing time were found influencing the adhesion obviously but the amount of restrainer in derusting solution had little effect on adhesion.