搜索结果: 1-15 共查到“理学 Escape”相关记录30条 . 查询时间(0.184 秒)
One reason it's so difficult to produce effective vaccines against some viruses, including influenza and HIV, is that these viruses mutate very rapidly. Mutation allows them to evade the antibodies ge...
Chemical defenses allow some moths to escape predatory bats（图）
Chemical defenses moths escape predatory bats
2020/1/21
A new NSF-supported study published in Frontiers in Ecology and Evolution reveals that less appetizing moths are more nonchalant when attacked by bats, whereas more palat...
Ancient Humans Left Africa to Escape Drying Climate（图）
Ancient Humans Left Africa Escape Drying Climate
2017/10/25
Humans migrated out of Africa as the climate shifted from wet to very dry about 60,000 years ago, according to research led by a University of Arizona geoscientist.Genetic research indicates people mi...
Rotor walk is a deterministic analogue of random walk. We study its recurrence and transience properties on Zd for the initial configuration of all rotors aligned. If n particles in turn perform rotor...
Escape from the Ivory Tower: A Guide to Making Your Science Matter
Escape from the Ivory Tower Science Matter
2015/7/9
Nancy Baron, the communications specialist for COMPASS (the Communication Partnership for Science and the Sea), wrote the book reviewed here, giving it the subtitle of "A guide to making your science ...
Trap-jaw ants jump with their jaws to escape the antlion's den
Trap-jaw ants jump escape the antlion's den
2015/5/25
Some species of trap-jaw ants use their spring-loaded mandibles to hurl themselves out of harm’s way when an ant-trapping predator stalks, researchers report in the journal PLOS ONE. This dramatic man...
Escape, collisions and regularization in the variational approach to the N-body problem
Escape collisions regularization variational approach N-body problem
2015/3/18
Escape, collisions and regularization in the variational approach to the N-body problem.
QED model of the radiation escape from the matter
QED model radiation escape the matter Atomic Physics
2012/4/20
A simple model based on QED is presented for the estimation of contribution of the excited level few-photon decays to the radiation escape from the matter in the epoch of the cosmological hydrogen rec...
Entropy, Lyapunov Exponents and Escape Rates in Open Systems
Lyapunov Exponents Escape Rates Open Systems Dynamical Systems
2011/9/5
Abstract: We study the relation between escape rates and pressure in general dynamical systems with holes, where pressure is defined to be the difference between entropy and the sum of positive Lyapun...
The Great Escape: How Exoplanets and Smaller Bodies Desert Dying Stars
planet-star interactions planets supernovae: general
2011/9/29
Mounting discoveries of extrasolar planets orbiting post-main sequence stars motivate studies aimed at understanding the fate of these planets. In the traditional "adiabatic" approximation, a secondar...
Group Chase and Escape with Conversion from Targets to Chasers
Conversion Chasers Group Chase Escape
2011/8/3
Abstract: We are studying the effect of converting caught targets into new chasers in the context of the recently proposed `group chase and escape' problem. Numerical simulations have shown that this ...
Will 3552 Don Quixote Escape from the Solar System?
Asteroid: orbital evolution- Solar System: N-body problems
2011/9/28
Asteroid 1983 SA, well known as 3552 Don Quixote, is one of Near Earth Asteroids (NEAs) which is the most probable candidate for the cometary origin, or otherwise as Jupiter-Family-Comets (JFCs). The ...
Correlations and pair emission in the escape dynamics of ions from one-dimensional traps
Correlations pair emission escape dynamics of ions one-dimensional traps
2010/12/28
We explore the non-equilibrium escape dynamics of long-range interacting ions in one-dimensional traps. The phase space of the few ion setup and its impact on the escape properties are studied.
A maximin characterization of the escape rate of nonexpansive mappings in metrically convex spaces
maximin characterization escape rate of nonexpansive mappings
2011/2/24
We establish a maximin characterization of the linear escape rate of the orbits
of a nonexpansive mapping on a complete (hemi-)metric space, under a mild form
of Busemann’s nonpositive curvature con...
Spectral degeneracy and escape dynamics for intermittent maps with a hole
Escape rate Pomeau-Manneville maps Perron-Frobenius operators
2011/1/20
We study intermittent maps from the point of view of metastability. Small neighbourhoods of an intermittent fixed point and their complements form pairs of almost-invariant sets.