slow down neutrons to velocities in equilibrium with surrounding molecules ("thermalize" them and turn them into low-energy neutrons that are far more likely to interact with the uranium-235 nuclei than the fast neutrons produced by fission initially), but it can also absorb some of them ...
The optimal approach velocity is defined as the velocity that minimizes the perfonnance index: the integral of the square deviation of the contact forces from the equilibrium force in the control of contact forces. A proportional relation between the optimal approach velocity and the contact force ...
The test setups for measuring wave velocities (VpandVs) comprise of a function generator to supply and control the input voltage and excitation frequency to the transmitting element. To process the output signal from the receiver, a filter-amplifier unit is required so as to get a clear wavefo...
美 英 n.恒定速度 网络双万向联轴节 英汉 网络释义 n. 1. 恒定速度
An atom placed in a focused laser beam will experience a dipole force due to the gradient in the interaction energy, which is analogous to the well-known optical tweezers effect. This force will be dependent on the velocity of the atom due to the Doppler effect, which could potentially be ...
A Corrigendum to this article was published on 31 May 2016This article has been updatedAbstract We derive an analytic expression for the distribution of velocities of multiple interacting active particles which we test by numerical simulations. In clear contrast with equilibrium we find that the ...
Measurements of suspended particle concentration, size and settling velocity were made at a shallow site in the southern North Sea during a spring phytopla... RR Mccandliss,SE Jones,M Hearn,... - 《Journal of Sea Research》 被引量: 93发表: 2002年 Annual replenishment of bed material by ...
This causes the RC member to be in a state of the dynamic equilibrium, and thus, the internal force and bending moment in the RC member are more complex [7], [8], [9]. In order to explain impact behavior, efforts have been made to apply the spring-mass model, energy conservation ...
Furthermore, we tune the frequency of the near-zero effective impedance at a Fabry–Pérot resonance frequency of the finite-sized effective medium for the maximized efficiency. Obviously, sensing and actuation should take place at this frequency. It is worth noting that this zero-impedance-based ...
To estimate the seismic velocity changes at different depths associated with a large earthquake, we apply passive image interferometry to two types of seismograms: KiK-net vertical pairs of earthquake records and Hi-net continuous borehole data. We compute the surface/borehole deconvolution waveform ...