搜索结果: 1-15 共查到“国际动态 理学 oxygen”相关记录24条 . 查询时间(0.121 秒)
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Warming climate prompts harmful oxygen loss in lakes(图)
气候变暖 湖泊 有害氧气流失
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2023/5/18
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Comet 67P emits ancient molecular oxygen from its nucleus(图)
彗星67P 核心 分子氧
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2023/5/22
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Recycling of tectonic plates a key driver of Earth’s oxygen budget(图)
构造板块 地球氧气收支 氧气循环
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2023/5/23
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Sea ice kept oxygen from reaching deep ocean during last ice age, study finds(图)
Sea ice oxygen reaching deep ocean during ice age
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2021/3/5
Extensive sea ice covered the world's oceans during the last ice age, preventing oxygen from penetrating into deep ocean waters and complicating the relationship between oxygen and carbon, a new study...
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Organic matter,bacteria doom sea stars to oxygen depletion(图)
Organic matter bacteria doom sea stars oxygen depletion
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2021/1/28
For more than seven years, a mysterious wasting disease has nearly killed off sea star populations worldwide. Many of these species are at the brink of extinction.New Cornell University-led resea...
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Without oxygen, Earth's early microbes relied on arsenic to sustain life(图)
Without oxygen Earth early microbes relied arsenic sustain life
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2020/10/16
Much of life on Earth today relies on oxygen to exist, but before oxygen was present on our planet, lifeforms likely used arsenic. The findings of the U.S. National Science Foundation-funded rese...
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Volcanic activity and changes in Earth's mantle were key to rise of atmospheric oxygen(图)
Volcanic activity changes Earth mantle were key rise atmospheric oxygen
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2020/6/19
Oxygen first accumulated in the Earth's atmosphere about 2.4 billion years ago, during the Great Oxidation Event. A long-standing puzzle has been that geologic clues suggest early bacteria were photos...
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Carbon hides in sediment,keeping oxygen in atmosphere(图)
Carbon hides sediment keeping oxygen atmosphere
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2019/10/28
A new study by researchers at the Woods Hole Oceanographic Institution and Harvard University may help settle a long-standing question: how do small amounts of organic carbon become locked away in roc...
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Low ocean oxygen levels can blind sea creatures(图)
Low ocean oxygen blind sea creatures
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2019/10/30
Scientists at the Scripps Institution of Oceanography at the University of California, San Diego, have found that low oxygen levels in seawater could blind some marine invertebrates.The results, publi...
Caltech Chemical Engineer Explains Oxygen Mystery on Comets
Caltech Chemical Engineer Oxygen Mystery Comets
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2017/7/20
A Caltech chemical engineer who normally develops new ways to fabricate microprocessors in computers has figured out how to explain a nagging mystery in space—why comets expel oxygen gas, the same gas...
Decades of Data on World’s Oceans Reveal a Troubling Oxygen Decline
Decades of Data World’s Oceans Oxygen Decline
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2017/7/19
A new analysis of decades of data on oceans across the globe has revealed that the amount of dissolved oxygen contained in the water – an important measure of ocean health – has been declining for mor...
Naked mole-rats turn into plants when oxygen is low
Naked mole-rats turn into plants oxygen is low
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2017/4/27
Deprived of oxygen, naked mole-rats can survive by metabolizing fructose just as plants do, researchers report this week in the journal Science.
Understanding how the animals do this could lead to tr...
UCLA astronomers make first accurate measurement of oxygen in distant galaxy
UCLA astronomers first accurate measurement of oxygen galaxy
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2016/8/11
UCLA astronomers have made the first accurate measurement of the abundance of oxygen in a distant galaxy. Oxygen, the third-most abundant chemical element in the universe, is created inside stars and ...
Widespread loss of ocean oxygen to become noticeable in 2030s
Widespread loss ocean oxygen noticeable in 2030s
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2016/5/6
A reduction in the amount of oxygen dissolved in the oceans due to climate change is already discernible in some parts of the world and should be evident across large regions of the oceans between 203...
Can animals thrive without oxygen?
animals thrive oxygen
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2016/2/22
In 2010, a research team garnered attention when it published evidence of finding the first animals living in permanently anoxic conditions at the bottom of the sea. But a new study, led by scientists...