The defecating frequency and stool property,the scores of fecal discharge difficulty and accompanied symptoms,the gastrointestinal transmission time,and adverse reaction of treatment in the two groups were observed before and after treatment.

IBS scoring system (BSS), defecation state questionnaire (DSQ) were used to record the changes of the patients main symptoms before and after.

Cyclodextrin glucanotransferase (CGTase ) is an important industrial enzyme used to produce cyclodextrin.

The present paper outlined the recent advances in the chemical modification of chitosans with the emphasis on sugarmodified chitosan and trimethylated, N-succinylated, thiolated, and azidated chitosans, as well as cyclodextrin-linked chitosan, crown-ether-bound chitosan and chemical grafting of chitosan.

But in practice,there may exist a series of sates between the two limit states,and thus the fuzzy state assumption should be used to replace the binary state assumption.

The theory of fuzzy reliability and the calculation model of fuzzy reliability of the system under a fuzzy state have been established,based on the ideas of system fuzzy state,transition of system fuzzy states,fuzzy probability,etc.

Then the failures of repairable vote systems were classified, the membership functions of the states to fuzzy success were defined and the reliability of repairable vote systems was analyzed by using the reliability theory based on fuzzy state.