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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Prandtl Boundary Layer in An Infinitely Long Convergent Channel
无穷长 收敛通道 Prandtl边界层
2023/11/7
This talk is about the large Reynold number limits and asymptotic behaviors of solutions to the 2D steady Navier-Stokes equations in an infinitely long convergent channel. We will show that for a gene...
A wildfire can pump smoke up into the stratosphere, where the particles drift for over a year. A new MIT study has found that while suspended there, these particles can trigger chemical reactions that...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Layer separation for the 3D Navier-Stokes equation in a bounded domain
有界域 三维 纳维-斯托克斯方程 层分离 NS方程
2023/4/26
We provide an unconditional $L^2$ upper bound for the boundary layer separation of 3D Leray--Hopf solutions in a smooth bounded domain. By layer separation, we mean the discrepancy between a (turbulen...
Aheart surgeon doesn’t need to grasp quantum mechanics to perform successful operations. Even chemists don’t always need to know these fundamental principles to study chemical reactions. But the worki...
Probing the inner secrets of multi-layer carbon nanotubes
electronic properties carbon nanotubes
2007/4/29
18 April 2007，Researchers at the University of Surrey have shown for the first time that knowing the structure of the surface layer of a multi-layer carbon nanotube is not enough to predict its electr...
January 31, 2007，The powerful vision of NASA's Hubble Space Telescope has allowed astronomers to study for the first time the layer-cake structure of the atmosphere of a planet orbiting another star. ...
Volcanic eruptions found to poke holes in the ozone layer
Volcanic eruptions the ozone layer the sulphur dioxide gas nitric acid
2006/11/10
8 November 2006，Volcanic eruptions destroy ozone and create ‘mini-ozone holes’, according to two new studies by researchers at the Universities of Cambridge and Oxford.