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美国伊利诺斯州浅埋古生代沉积物及冰川沉积物中的微生物成因甲烷 被引量:1
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作者 Coleman d.d. 武海华 《天然气地球科学》 EI CAS CSCD 1990年第1期17-17,共1页
伊利诺斯州地下水中普遍存在微生物成因的甲烷。对200多口水井及39口气井所采样品进行化学成分及同位素组成研究发现,这种气体主要是通过二氧化碳还原作用形成的,与海相环境微生物甲烷的形成机理一致;甲烷的碳、氢同位素组成与气体的化... 伊利诺斯州地下水中普遍存在微生物成因的甲烷。对200多口水井及39口气井所采样品进行化学成分及同位素组成研究发现,这种气体主要是通过二氧化碳还原作用形成的,与海相环境微生物甲烷的形成机理一致;甲烷的碳、氢同位素组成与气体的化学成分及水化学成分密切相关;甲烷成因带地下水滞留时间相对于甲烷形成速率短得多的水体中,甲烷的同位素是很轻的。据此并得出以下几点认识: 展开更多
关键词 微生物成因甲烷 冰川沉积物 甲烷气 水化学成分 同位素组成 美国伊利诺斯州 氢同位素 还原作用 形成机理 滞留时间
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MATTERS OF IMPORT
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作者 d.d. 《The World of Chinese》 2016年第4期34-35,共2页
Earlier this year,a Chinese company tried to buy a chunk of Australia the size of Wales(about the size of Kentucky,to provide an American example).The 250 million AUD purchase of the beef station was blocked by Austra... Earlier this year,a Chinese company tried to buy a chunk of Australia the size of Wales(about the size of Kentucky,to provide an American example).The 250 million AUD purchase of the beef station was blocked by Australian regulators,who found security reasons to 展开更多
关键词 Australia KENTUCKY purchase Wales blocked CHUNK REASONS companies tried QUARTERS
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CLOSE QUARTERS WOULD YOU WANT THE GOVERNMENT AS A HOUSEMATE?
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作者 d.d. 《The World of Chinese》 2017年第5期8-8,共1页
Buying an apartment in China is tough.Prices in firsttier cities keep skyrocketing but demand never seems to fall.Instead,potential buyers just get more anxious about missing out.Chinese authorities fear a market cras... Buying an apartment in China is tough.Prices in firsttier cities keep skyrocketing but demand never seems to fall.Instead,potential buyers just get more anxious about missing out.Chinese authorities fear a market crash,but would also like to avoid having prices spiral entirely out of reach for the middle class.A raft of measures have been tried。 展开更多
关键词 CLOSE QUARTERS WOULD YOU WANT THE GOVERNMENT AS A HOUSEMATE
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RAMPANT RABBIT A CARTOON BUNNY HAS NETIZENS FIRED UP
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作者 d.d. 《The World of Chinese》 2017年第6期9-9,共1页
Chinese media has long had a menagerie of hapless animals that stand in for countries in political comic strips.Russia is a bear,China is a panda(of course),and the US is occasionally an eagle,though more often an ang... Chinese media has long had a menagerie of hapless animals that stand in for countries in political comic strips.Russia is a bear,China is a panda(of course),and the US is occasionally an eagle,though more often an angiy-looking Uncle Sam.They’re hideously dull.Chinese nationalists——or at least,those on the internet—have 展开更多
关键词 RAMPANT RABBIT A CARTOON BUNNY HAS NETIZENS FIRED UP
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