搜索结果: 1-15 共查到“知识库 理学 CLOCK”相关记录15条 . 查询时间(0.062 秒)
Body size, metabolic rate, generation time, and the molecular clock
molecular clock generation time
2015/12/17
There is increasing evidence for variation in
rates of nucleotide substitution among divergent taxonomic
groups. Here, we summarize published rate data and show a
strong relationship between substi...
Habitual sleep duration is associated with BMI and macronutrient intake and may be modified by CLOCK genetic variants
CLOCK circadian rhythm dietary intake gene-environment interaction sleep duration
2018/12/20
Background: Short sleep duration has been associated with greater risks of obesity, hypertension, diabetes, and cardiovascular disease. Also, common genetic variants in the human Circadian Locomotor O...
Performance of a 229 Thorium solid-state nuclear clock
Performance 229 Thorium solid-state nuclear clock Atomic Physics
2012/4/24
The 7.8 eV nuclear isomer transition in 229 Thorium has been suggested as an etalon transition in a new type of optical frequency standard. Here we discuss the construction of a "solid-state nuclear c...
Gyromagnetic Factors and Atomic Clock Constraints on the Variation of Fundamental Constants
Gyromagnetic Factors Atomic Clock Constraints Variation Fundamental Constants
2011/10/14
We consider the effect of the coupled variations of fundamental constants on the nucleon magnetic moment. The nucleon g-factor enters into the interpretation of the measurements of variations in the f...
Gyromagnetic Factors and Atomic Clock Constraints on the Variation of Fundamental Constants
Gyromagnetic Factors Atomic Clock Constraints Fundamental Constants
2011/8/17
Abstract: We consider the effect of the coupled variations of fundamental constants on the nucleon magnetic moment. The nucleon g-factor enters into the interpretation of the measurements of variation...
Rotating states in driven clock- and XY-models
soft modes nonequilibrium dynamics Statistical Mechanics
2011/8/23
Abstract: We consider 3D active plane rotators, where the interaction between the spins is of XY-type and where each spin is driven to rotate. For the clock-model, when the spins take N\gg1 possible v...
A robust two-gene oscillator at the core of Ostreococcus tauri circadian clock
two-gene oscillator Ostreococcus tauri circadian clock
2011/1/5
The microscopic green alga Ostreococcus tauri is rapidly emerging as a promising model organism in the green lineage. In particular, recent results by Corellou et al. [Plant Cell, 21, 3436 (2009)] and...
Tackling the blackbody shift in a strontium optical lattice clock
blackbody shift strontium optical lattice clock
2010/10/26
A major obstacle for optical clocks is the frequency shift due to black body radiation. We discuss how one can tackle this problem in an optical lattice clock; in our case 87Sr: firstly, by a measurem...
Chaotic neuron clock
Chaotic neuron clock
2010/11/15
A simple threshold model of neuron firing (with the neuron membrane electrochemical potential governed by the chaotic Rossler attractor) has been analyzed by mapping the generated irregular spiking ti...
Very Large Array observations of the 8 o'clock arc lens system: Radio emission and a limit on the star-formation rate
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/23
The 8 o'clock arc is a gravitationally lensed Lyman Break Galaxy (LBG) at redshift z=2.73 that has a star-formation rate (SFR) of 270 solar-mass/year (derived from optical and near-infrared spectrosco...
Micropower Digital Crystal Clock for Field Use
C-MOS Telemetering Seismology Crystal Clock
2009/6/18
Micropower Digital Crystal Clock for Field Use.
Clock synchronization by remote detection of correlated photon pairs
Clock synchronization remote detection correlated photon pairs
2010/4/9
We present an algorithm to detect the time and frequency difference of independent clocks based on observation of time-correlated photon pairs. This enables remote coincidence identification in entang...
On the Salecker-Wigner-Peres clock and double barrier tunneling
Salecker-Wigner-Peres clock double barrier tunneling
2010/4/7
In this work we revisit the Salecker-Wigner-Peres clock formalism and show that it can be directly applied to the phenomenon of tunneling. Then we apply this formalism to the determination of the tunn...
The CO2 tracer clock for the Tropical Tropopause Layer
CO2 tracer clock Tropical Tropopause Layer
2008/12/15
Observations of CO2 were made in the upper troposphere and lower stratosphere in the deep tropics in order to determine the patterns of large-scale vertical transport and age of air in the Tropical T...