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Cosmic Ray-driven Bioenergetics for Life in Molecular Clouds
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作者 FENG Lei 《天文学报》 CAS CSCD 北大核心 2024年第6期26-31,共6页
According to models such as panspermia or the Nebula-Relay hypothesis,the ancestors of life on Earth once lived in molecular clouds.Then what are the energy source and bioenergetics for such lifeforms?A new bioenerget... According to models such as panspermia or the Nebula-Relay hypothesis,the ancestors of life on Earth once lived in molecular clouds.Then what are the energy source and bioenergetics for such lifeforms?A new bioenergetic mechanism powered by cosmic ray ionization of hydrogen molecules is proposed and its relation with the origin of chemiosmosis is also discussed in this paper.Based on this mechanism,the Last Universal Common Ancestor may be a type of lifeform that utilizes hydrogen molecules as donors of electron transport chains. 展开更多
关键词 ASTROBIOLOGY ASTROCHEMISTRY interstellar medium(ISM) NEBULAE cosmic ray
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福州大气污染日与气象条件关系 被引量:8
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作者 李岩 郑东旗 +1 位作者 龚振斌 吴启树 《亚热带农业研究》 2014年第3期194-198,共5页
利用2008-2012年福州市大气污染逐日监测资料确定福州市大气污染日,并分析了其天气形势、地面气象资料及高空探测资料。结果表明,易产生大气污染日的气象特征包括:500 hPa高度场关键区被弱暖平流控制或冷空气势力较弱;850 hPa高度场关... 利用2008-2012年福州市大气污染逐日监测资料确定福州市大气污染日,并分析了其天气形势、地面气象资料及高空探测资料。结果表明,易产生大气污染日的气象特征包括:500 hPa高度场关键区被弱暖平流控制或冷空气势力较弱;850 hPa高度场关键区等高线稀疏,没有明显的天气系统;850 hPa以下大气一般存在逆温层、湿层与风向突变层,大气水平、垂直交流不畅,属静稳大气,易造成大气污染物堆积。大气污染日出现频率较高的海平面气压场类型有:大陆高压脊型、变性冷高压前部型、变性冷高压底部型或后部型、锋前暖区型、均压场型、地面倒槽暖区型。 展开更多
关键词 大气污染日 天气形势 垂直结构 静稳大气
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Progress of Research on Origins of Life in China
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作者 ZHAO Yufen HUA Yuejin +4 位作者 ZHANG Hongyu HE Yujian ZHU Ting LIU Yan WU Li 《空间科学学报》 CAS CSCD 北大核心 2020年第5期937-945,共9页
The development of Chinese space science and technology plays a great role in promoting the researches in the field of the origin of life.With the multidisciplinary cooperation,there are fruitful achievements in this ... The development of Chinese space science and technology plays a great role in promoting the researches in the field of the origin of life.With the multidisciplinary cooperation,there are fruitful achievements in this research field obtained over the past two years.This report summarizes the major progress of the basic researches about the origin of life in China during 2018–2020. 展开更多
关键词 Origin of genetic code Origin of metabolism Evolution prototype of modern enzyme Mirrorimage biological system EXTREMOPHILES
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