搜索结果: 1-15 共查到“国际动态 理学 activity”相关记录19条 . 查询时间(0.091 秒)
Scientists last autumn revealed that the gas phosphine was found in trace amounts in Venus’ upper atmosphere. That discovery promised the slim possibility that phosphine serves as a biological signatu...
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
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...
Changing atmospheric conditions may contribute to stronger ocean wave activity on the Antarctic Peninsula（图）
Changing atmospheric conditions stronger ocean wave activity Antarctic Peninsula
2017/2/16
Over the past few years, a large fracture has grown across a large floating ice shelf on the Antarctic Peninsula. The world is watching the ice shelf, now poised to break off an iceberg the size of De...
Scientists optimize FRET-FLIM to study activity of two signaling molecules within a single dendritic spine
Scientists FRET-FLIM two signaling molecules single dendritic spine
2016/11/4
An ongoing challenge for scientists working to understand the brain is being able to see all its parts. Researchers have spent centuries developing better imaging techniques to see beyond the abilitie...
Dating historic activity at Oso site shows recurring major landslides
Alison Duvall College of the Environment David Montgomery Department of Earth and Space Sciences geology landslide
2016/1/4
The large, fast-moving mudslide that buried much of Oso, Washington in March 2014 was the deadliest landslide in U.S. history. Since then it’s been revealed that this area has experienced major slides...
Study Finds Key Molecular Mechanism Regulating Plant Translational Activity
Key Molecular Mechanism Plant Translational
2015/11/12
The central role of translation in modulating gene activity has long been recognized, yet the systematic exploration of quantitative changes in translation at a genomewide scale in response to a speci...
New mathematical method reveals structure in neural activity in the brain
New mathematical method neural activity the brain
2015/11/12
A newly-developed mathematical method can detect geometric structure in neural activity in the brain. "Previously, in order to understand this structure, scientists needed to relate neural activity to...
Fragile bones of modern humans result from reduced physical activity
modern humans reduced physical activity
2014/12/30
UNIVERSITY PARK, Pa. -- The comparatively light bone structure of modern humans compared to early human species and other modern primates may be due to the modern abandonment of the constant physical ...
Rhythmic bursts of electrical activity from cells in ear teach brain how to hea
Rhythmic bursts electrical activity from cells ear teach brain how to hea
2014/6/19
A precise rhythm of electrical impulses transmitted from cells in the inner ear coaches the brain how to hear, according to a new study led by researchers at the University of Pittsburgh School of Med...
Researchers at MIT and the University of Vienna have created an imaging system that reveals neural activity throughout the brains of living animals. This technique, the first that can generate 3-D mov...
Multiple consecutive days of tornado activity spawn worst events
Multiple consecutive days tornado activity spawn worst events
2014/5/13
WEST LAFAYETTE, Ind. - Significant tornado outbreaks and especially strong tornadoes are more likely occur within periods of activity lasting three or more days, according to a Purdue University torna...
Solar activity influences climate change, say scientists（图）
Solar activity influences climate change say scientists
2014/3/20
Changes in the sun’s energy output may have led to marked natural climate change in Europe over the last 1000 years, according to researchers at Cardiff University.
The University of Queensland stem cell researcher leads high school activity for National Science Week
stem cell bioinformatics
2014/7/15
A University of Queensland stem cell researcher will lead a discussion of Year 10 students from around Australia, covering genomics, bioinformatics and stem cell research on Thursday, August 16 for Na...
New technique offers a more detailed view of brain activity（图）
New technique brain activity the brain
2010/3/24
For neuroscientists, one of the best ways to study brain activity is with a scanning technique called functional magnetic resonance imaging (fMRI), which reveals blood flow in the brain.
Chemists synthesize fungal compound with anti-cancer activity
chemists synthesize fungal anti-cancer activity natural source
2009/4/30
The compound, known as (+)-11,11'-Dideoxyverticillin A, is one of the most structurally complex members of a family of naturally occurring alkaloids.Mohammad Movassaghi, associate professor of chemist...
