搜索结果: 61-75 共查到“理学 evolution”相关记录846条 . 查询时间(0.133 秒)
Preface: Evolution of the solar system: New advances in cosmochemistry and planetary chemistry
cosmochemistry planetary chemistry
2017/4/10
The understanding of evolution of solar system has been
recently entered a phase of major change with the results
of new astronomical observation, several primitive extraterrestrial
samples includi...
The I-Xe chronometer and its constraints on the accretion and evolution of planetesimals
extinct radioisotopes iodine-xenon chondrites early solar system chronology
2017/4/10
We report a –1.6 ± 2.6 Myr (1s error) I-Xe age of the ungrouped achondrite NWA 7325 relative to the Shallowater
standard. We re-evaluate the calibration of the relative I-Xe dating system against the...
“Smart” Cephalopods Trade Off Genome Evolution for Prolific RNA Editing
Smart Cephalopods Trade Off Genome Evolution Prolific RNA Editing
2017/4/27
Octopus, squid, and cuttlefish are famous for engaging in complex behavior, from unlocking an aquarium tank and escaping to instantaneous skin camouflage to hide from predators. A new study suggests t...
Numerical simulation of groundwater and early warnings from the simulated dynamic evolution trend in the plain area of Shenyang, Liaoning Province (P.R. China)
roundwater table Groundwater exploitation
2018/3/23
Groundwater level is the most direct factor reflecting whether groundwater is in a virtuous cycle. It is the most important benchmark for deciding whether a balance can be struck between groundwater d...
2017年分子机制演变高登研究研讨会（The Gordon Research Seminar on Molecular Mechanisms in Evolution）
2017年 分子机制演变高登研究 研讨会
2017/3/13
This is the first Gordon Research Seminar (GRS) on Molecular Mechanisms in Evolution. This seminar weekend is linked to a relatively new Gordon Research Conference that has received outstanding partic...
2017神经生理学高登研究研讨会（The Gordon Research Seminar on Neuroethology: Behavior, Evolution and Neurobiology）
Behavior Evolution Neurobiology
2017/2/24
The Gordon Research Seminar on Neuroethology: Behavior, Evolution and Neurobiology is a unique forum for graduate students and post-docs to present their work, exchange experiences, and discuss cuttin...
2017神经生理学戈登学术会议（The 2017 Gordon Research Conference on Neuroethology:Behavior,Evolution&Neurobiology）
2017 神经生理学戈登 学术会议
2017/2/14
The 2017 Gordon Research Conference on Neuroethology will focus on "Neural, Behavioral and Evolutionary Strategies for Animal Survival". The core focus of Neuroethology is the understanding of the neu...
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 ...
Scientists engineer animals with ancient genes to test causes of evolution（图）
Scientists engineer animals ancient genes test causes of evolution
2017/2/16
Scientists at the University of Chicago have created the first genetically modified animals containing reconstructed ancient genes, which they used to test the evolutionary effects of genetic changes ...
A Fertilizer Dearth Foiled Animal Evolution for Eons?
Fertilizer Dearth Foiled Animal Evolution Eons
2017/1/9
For three billion years or more, the evolution of the first animal life on Earth was ready to happen, practically waiting in the wings. But the breathable oxygen it likely required wasn’t there, and a...
Study explains evolution phenomenon that puzzled Darwin
evolution phenomenon puzzled Darwin
2016/12/13
Why do some animals have extravagant, showy ornaments — think elk and deer antlers, peacock feathers and horns on dung beetles — that can be a liability to survival? Charles Darwin couldn’t figure it ...
We generally think of inheritance as the genetic transfer from parent to offspring and that evolution moves toward greater complexity. But there are other ways that genes are transferred between organ...
The seemingly peaceful atmosphere in an organic garden on the University of Florida campus belies the battles happening among many of its tiniest inhabitants -- the insects. For entomologist Christine...
Antibody Evolution Constrains Conformational Heterogeneity by Tailoring Protein Dynamics
flexibility nonlinear spectroscopy fluorscein molecular recognition
2016/5/24
The evolution of proteins with novel function is thought to start from precursor proteins that are conformationally heterogeneous. The corresponding genes may be duplicated and then mutated to select ...
Some Speculations Concerning the Evolution of Photosynthetic Function
reaction center kinetic perfection
2016/5/23
Following a brief review of the light-driven reactions in photosynthetic membranes, two questions are addressed. (1) Why is the first charge separation reaction in photosynthetic reaction centers so f...