【摘要】 综述了前人在失重或模拟失重与基因表达的关系方面的研究成果，从三个方面重点阐明了失重或模拟失重对中枢神经系统内基因表达的影响。从中可以看出，中枢神经系统内基因的表达是受重力因素精确调节的，在分子水平上研究空间微重力环境对中枢神经系统的影响具有重要意义。更多还原

【Abstract】 With the extension of extravehicular activity(EVA) duration, the need for more effective thermal control of EVA spacesuits is required. The specific schemes investigated in heat sink system for EVA are discussed,including radiator, ice storage, metal hydride heat pump, phase change storage/radiator and sublimator. The importance and requirements of automatic thermal control for EVA are also discussed.Existed automatic thermal control for EVA are reviewed.Prospects of further developments of thermal control of spacesuits for EVA are proposed.更多还原