搜索结果: 1-12 共查到“国际动态 理学 Cu”相关记录12条 . 查询时间(0.178 秒)
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斑岩型矿床提供了世界上约75%的Cu、20%的Au和90%的Mo,其形成与侵位至地壳浅部(多数<5 km)的中酸性岩株直接相关,而中酸性岩株及成矿流体则直接来源于中下地壳(10-15 km)的中间岩浆房。虽然斑岩矿床的成矿物质都需要经历矿质元素从岩浆转移至流体、继而在流体中沉淀这一过程,然而不同的斑岩矿床可能具有截然不同的金属组合和成矿规模。例如,富Au斑岩铜床的Au/Cu约为80×10-6,而富...
Rapid trait evolution crucial to species growth, CU Boulder study finds
Rapid trait evolution species growth CU Boulder
2017/2/16
Rapid evolution at the edges of a given species habitat may play a larger role in population expansions than previously suspected, according to the results of a new University of Colorado Boulder-led ...
CU Boulder study:Mate choices of barn swallows tied to diverging appearances
CU Boulder study Mate choices barn swallows tied diverging appearances
2016/8/23
If you are a male barn swallow in the United States or the Mediterranean with dark red breast feathers, you’re apt to wow potential mates. But if you have long outer tail feathers in the United States...
Fire severity in southwestern Colorado unaffected by spruce beetle outbreak,CU-Boulder study finds
Fire severity southwestern Colorado unaffected by spruce beetle CU-Boulder
2015/11/12
Contrary to expectations that spruce beetle infestations increase the severity of wildfires in southwestern Colorado, a new study led by University of Colorado Boulder researchers has found that this ...
Historic 2013 Colorado Front Range storm accomplished up to 1,000 years of erosion,CU-Boulder study finds
2013 Colorado storm accomplished 1,000 years of erosion CU-Boulder
2015/9/8
The historic September 2013 storm that triggered widespread flooding across Colorado’s Front Range eroded the equivalent of hundreds, or even as much as 1,000 years worth of accumulated sediment from ...
Inbreeding not to blame for Colorado’s bighorn sheep population decline,CU-Boulder study finds
Inbreeding not to blame Colorado’s bighorn sheep population decline CU-Boulder
2015/8/4
The health of Colorado’s bighorn sheep population remains as precarious as the steep alpine terrain the animals inhabit, but a new study led by researchers at the University of Colorado Boulder has fo...
CU-Boulder technology could make treatment and reuse of oil and gas wastewater simpler, cheaper
CU-Boulder technology treatment and reuse of oil gas wastewater simpler cheaper
2015/3/4
Oil and gas operations in the United States produce about 21 billion barrels of wastewater per year. The saltiness of the water and the organic contaminants it contains have traditionally made treatme...
Oklahoma earthquake swarm linked to wastewater injection wells, says study involving CU-Boulder
The earthquake Wastewater Oil Natural gas Underground strata Hydrological geology sewage
2014/7/18
The massive increase in earthquakes in central Oklahoma is likely being caused by the injection of vast amounts of wastewater from oil and gas operations into underground layers of rock, according to ...
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Bright pulses of light could make space veggies more nutritious, says CU-Boulder study(图)
light nutritious Bright pulses
2014/3/20
Exposing leafy vegetables grown during spaceflight to a few bright pulses of light daily could increase the amount of eye-protecting nutrients produced by the plants, according to a new study by resea...
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CU-Boulder researchers sequence world's first butterfly bacteria, find surprises(图)
butterfly bacteria
2014/3/18
For the first time ever, a team led by the University of Colorado Boulder has sequenced the internal bacterial makeup of the three major life stages of a butterfly species, a project that showed some ...
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New CU-Boulder study shows differences in mammal responses to climate change(图)
mammal small mammals
2014/3/18
If you were a shrew snuffling around a North American forest, you would be 27 times less likely to respond to climate change than if you were a moose grazing nearby.
CU-Boulder Professor Margaret Tolbert Awarded 2007 CU-Boulder Hazel Barnes Prize
biochemistry
2007/4/11