[Biological effects of space flight on several opportunistic pathogenic bacteria and biodestructive fungi].

Objective: To investigate biological effects of space flight on several conditional pathogenic bacteria and biodestructive fungi.

Method: Several potentially pathogenic or biodegrading microorganisms, including bacteria, actinomyces and fungi, were carried on-board spacecraft for 7 d. Some of the biological characteristics were studied by using general microbial test technology after recovery.

[A study on training method for increasing adaptability to blood redistribution in human].

Objective: To verify validity of the increase in adaptability of blood redistribution in human body with repeated body position change training and to find preferable training method for increasing astronaut's adaptability of blood redistribution.

Method: Twelve subjects were randomly divided into group A and B. Six subjects in each group were trained with mode A and B repeated position change (9 times in 11 d) respectively.

[Safety and reliability verification for manned spacecraft crew support facilities].

Objective: To verify reliability and safety of the crew support facilities on board manned spacecraft.

Method: Several comprehensive qualitative and quantitative projection verification technique, such as analysis, check, demonstration, tests and reliability assessment, were used.

Result: Work-items that were specified in the reliability and safety program were realized.

[Past, present and future development of the project of manned space medico-engineering in China].

Based on the research work of manned space medico-engineering at different stages of its development in China, the formation and development of the subject was summarized. The relations among the main fields of space medico-engineering, that is, depend on each other for existence, influence, co-operation and infiltration in the system, were discussed. Considering the ongoing tasks of manned space flight in China, directions and contents of research work of manned space medico-engineering were pointed out.

[Effects of repeated body position change training for human orthostatic tolerance].

Objective: To verify the validity that repeated position change training can increase human orthostatic tolerance and to explore its mechanism.

Method: Six subjects were trained with repeated position change for 11 d according to a protocol of alternative head-down and head-up tilts, each set of training lasted for about 35 min. Their orthostatic tolerances were determined before and after training.

[Effects of 21 d -6 degrees head down bed-rest on pulmonary gas distribution and little airway function].

Objective: To probe the effect of 21 d -6 degrees head down bed-rest (HDBR) on pulmonary gas distribution and little airway function.

Method: The indices of the pulmonary gas distribution and little airway function (delta N2, CV, CV/VC%, LCI) were measured in 16 healthy male subjects before, during and after 21 d -6 degrees HD-BR.

Result: Comparing with before and early days of HDBR, recovery supine delta N2 increased significantly.

[Changes of cardiac kinetics during various stages of space flight].

Arterial blood pressure is dependent on ordinary cardiac function in human beings. Cardiac kinetics serves as important cardiovascular parameters during various stages of space activities. Although the reports about cardiac kinetics were not always in consistency during spaceflight, obvious changes during orthostatic stress after spaceflight were commonly observed.