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531.
Zongjie Hao Dunhai Li Yanhui Li Zhicong Wang Yuan Xiao Gaohong Wang Yongding Liu Chunxiang Hu Qifang Liu 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2011
Some phytoplankton can be regarded as possible candidates in the establishment of Controlled Ecological Life Support System (CELSS) for some intrinsic characteristics, the first characteristic is that they should grow rapidly, secondly, they should be able to endure some stress factors and develop some corresponding adaptive strategies; also it is very important that they could provide food rich in nutritious protein and vitamins for the crew; the last but not the least is they can also fulfill the other main functions of CELSS, including supplying oxygen, removing carbon dioxide and recycling the metabolic waste. According to these characteristics, Nostoc sphaeroides, a potential healthy food in China, was selected as the potential producer in CELSS. It was found that the oxygen average evolution rate of this algae is about 150 μmol O2 mg−1 h−1, and the size of them are ranged from 2 to 20 mm. Also it can be cultured with high population density, which indicated that the potential productivity of Nostoc sphaeroides is higher than other algae in limited volume. We measured the nutrient contents of the cyanobacterium and concluded it was a good food for the crew. Based on above advantages, Nostoc sphaeroides was assumed to a suitable phytoplankton for the establishment of Controlled Ecological Life Support System. We plan to develop suitable bioreactor with the cyanobacterium for supplying oxygen and food in future space missions. 相似文献
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胡行康 《航空标准化与质量》1999,(6):9
概述了治理汽车排放污染的技术法规、汽车排放控制技术和车用燃油三大要素的内容和作用,以及它们相互依存的关系。最后提出了对我国治理汽车排放污染的4 点建议。 相似文献
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军工产品环境工程是为了保障和提高军事装备质量特性之一--环境适应性的一项系统工程。在产品环境工程实施中,计量测试技术不仅是最基础的技术,而且其水平的高低也制约着军工产品环境工程的发展;反之,军工产品环境工程的发展又强劲地推动着计量测试技术的进步。本文对计量测试技术在军工产品环境工程中的作用,地位、现状及发展作了较详尽的论述与分析。 相似文献
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Once in the hands of end users, such durable equipment as spacecraft, aircraft, ships,automobiles, computers, etc. are in a state of debugging, working or storage. In either state, availability, reliability and super-efficiency are the ultimate goals, which have been achieved through constant monitoring as well as regular, preventive, routine and corrective maintenance. Although some advanced instruments can visualize certain invisible malfunctioning phenomena into visible ones, deeply hidden troubles cannot be found unless monitoring and testing data are addressed using tools that process the data statistically, analytically and mathematically. Some state-of-theart trouble-shooting and life-predicting techniques and approaches are introduced in this paper. 相似文献
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