The main theories and views concerning various catalytic functions and procedures for macroscopic qualitative design of catalysts were reviewed, and some research and design concepts were illustrated qualitatively taking typical commercial catalysts as examples.

Direct calculation method for stability design of circular cold-formed thin-wall steel tube under axially compressive force;

In the stability design of the bottom slab of stilling basin or water cushion pool for a long time past, a little attention was paid to the pulse load on the slab.

Secondly,on the basis of elastic-plastic stability analysis,referring to the stability design method of monosymmetric section axially loaded compression members,equivalent slenderness of pin-ended circular steel arch subject to hydrostatic pressure are deduced from the expression of out-of-plane elastic buckling load.

Evidence theory has been applied for solid rocket motor case uncertainty design, the more suitable design result and the uncertainty interval for system reliability probability can been o.

The method of the uncertainty design using probability theory and credibility theory have been presented,which provides us with a useful modeling tool for random and epistemic parameter uncertainty.

Aiming at the inherent uncertainty and multidisciplinary in the design process of micro autonomous underwater vehicle(micro AUV),we combine the uncertainty design theory with the multidisciplinary design optimization theory to provide a robust collaborative optimization(RCO)method for large-scale and complex systems multidisciplinary robust design optimization(MRDO).

According to the request of the CECS23∶90《Design Criterion of the Steel Storage Frame》, the article introduces the method of the solid storage frame s whole stability calculation by some solid storage frame s specific condition.