搜索结果: 1-15 共查到“理学 link”相关记录75条 . 查询时间(0.094 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A link invariant from higher-dimensional Heegaard Floer homology
高维 Heegaard-Floer同调 链接不变量
2023/11/13
We define a higher-dimensional analogue of symplectic Khovanov homology. Consider the standard Lefschetz fibration of a 2n-dimensional Milnor fiber of the A_{k-1} singularity. We represent a link by a...
Superconductivity for sustainability: a new superconducting link for the High-Luminosity LHC（图）
超导性 可持续发展 大型强子对撞机 新超导链接
2023/5/26
The Large Hadron Collider (LHC), the world’s largest and most powerful particle accelerator, is also the largest single machine operating in the world today that uses superconductivity. The proton bea...
The Australian wildfires in 2019 and 2020 were historic for how far and fast they spread, and for how long and powerfully they burned. All told, the devastating “Black Summer” fires blazed across more...
耳蜗中tip-link张力与静纤毛运动动力学研究
静纤毛 变形体 tip-link张力 频率特性
2022/3/28
诠释耳蜗的主动感音放大机制一直是未解的医学难题。这种机制与耳蜗中外毛细胞顶端的静纤毛运动密切相关，静纤毛运动又受到tip-link张力与淋巴液流体力的调节。因此，研究静纤毛运动过程中tip-link张力是诠释耳蜗的主动感音放大机制的重要环节。本文把静纤毛视为变形体，基于泊肃叶流动理论并结合分布参数模型，推导了静纤毛运动的解析解。研究了盖膜剪切荷载作用下静纤毛和淋巴液相互作用的动力响应以及tip-l...
Scientists link star-shredding event to origins of universe's highest-energy particles（图）
Scientists star-shredding event origins universe highest-energy particles
2021/3/5
A team of scientists has detected the presence of a high-energy neutrino -- a particularly elusive particle -- in the wake of a star's destruction as it is consumed by a black hole.The discovery is a ...
Researchers find link between Atlantic hurricanes and weather system in East Asia（图）
Atlantic hurricanes weather system East Asia
2020/8/14
Research led by University of Iowa investigators has identified a climate system in East Asia that may influence the frequency of tropical storm development in the Atlantic Ocean.In the new ...
Scientists find no direct link between North Atlantic Ocean currents, New England coast sea level（图）
Scientists North Atlantic Ocean currents New England coast sea level
2019/10/28
A new study by NSF-funded scientists at the Woods Hole Oceanographic Institution clarifies the influence of major currents in the North Atlantic Ocean on sea level along the coast of the northeastern ...
New Egyptian Dinosaur Reveals Ancient Link Between Africa And Europe（图）
New Egyptian Dinosaur Ancient Africa Europe
2018/2/1
When it comes to the final days of the dinosaurs, Africa is something of a blank page. Fossils found in Africa from the Late Cretaceous, the time period from 100 to 66 million years ago, are few and f...
Research Finds Link Between Rainfall And Ocean Circulation In Past And Present（图）
Research Rainfall Ocean Circulation Past Present
2018/2/1
Research conducted at The University of Texas at Austin has found that changes in ocean currents in the Atlantic Ocean influence rainfall in the Western Hemisphere, and that these two systems have bee...
Alligators,Rulers Of The Swamps,Link Marine And Freshwater Ecosystems（图）
Alligators Rulers Of The Swamps Link Marine Freshwater Ecosystems
2017/11/23
The sophistication of radio transmitters has moved well beyond the days of walkie-talkies. Now transmitters similar to those that track space mission orbiters are being used here on Earth to follow al...
Scientists Link Cutting-edge Biodiversity Genomics With Museum Wisdom Through New Public Database
Scientists Biodiversity Genomics Museum Wisdom New Public Database
2017/9/4
The resource, called the Genomic Observatories Metadatabase (GeOMe), was developed by researchers at the Smithsonian’s National Museum of Natural History and eight other museums and research instituti...
Scientists link California droughts and floods to distinctive atmospheric waves
Scientists California droughts floods atmospheric waves
2017/4/27
The crippling wintertime droughts that struck California from 2013 to 2015, as well as this year's unusually wet California winter, appear to be associated with the same phenomenon: a distinctive wave...
Scientists discover the evolutionary link between protein structure and function
Scientists evolutionary link protein structure function
2016/5/31
Proteins are more than a dietary requirement. This diverse set of molecules powers nearly all of the cellular operations in a living organism. Scientists may know the structure of a protein or its fun...
Worst cases for an one-hop high frequency link
ionosphere radio propagation worst cases ray-tracing
2015/9/25
The characterisation of a HF channel by means of monthly electron density profiles can be complemented with a detailed study of radio propagation «worst cases» on situations with extremes co...
Convex optimization of output link scheduling and active queue management in QoS constrained packet switches
Algorithm switches generalized geometric programming convex optimization
2015/8/11
We present two novel algorithms at the ingress and egress of packet switches with QoS provisioning and fairness constraints. We first provide a suite of generalized weighted fair queuing formulations ...