نتایج جستجو برای: kinetic energy model

تعداد نتایج: 2688983  

2010
Anna B. Harper A. Scott Denning Ian T. Baker Mark D. Branson Lara Prihodko David A. Randall

Both local and large-scale processes affect the Amazon hydrologic cycle. We investigate the impact of deep soils on the atmosphere through local feedbacks. The Simple Biosphere model, version 3 (SiB3), is coupled to a single column model. Historically, land surface schemes parameterize soil moisture stress based on shallow soils and incorrectly capture seasonal cycles in the Amazon. Following o...

2010
S. Heinz C. Golabek W. Mittig F. Rejmund

In heavy ion collisions at Coulomb barrier energies a dinuclear system (DNS) can be formed when the cores come into contact. This enables the exchange of nucleons which is usually accompanied by the dissipation of kinetic energy. During this time the nuclei stick together. We investigated U + U (Z = 184) collisions at the VAMOS spectrometer at GANIL at five beam energies in the interval (6.09 −...

2016
Subhas Karan Venayagamoorthy Jeffrey R. Koseff

The mixing efficiency Rf (more formally referred to as the flux Richardson number) is a widely used parameter that is intended to provide a measure of the amount of turbulent kinetic energy (TKE) that is irreversibly converted to background potential energy as a result of turbulent mixing in a stably stratified fluid. In this paper, three different definitions of the mixing efficiency that are ...

Journal: :American journal of physiology. Heart and circulatory physiology 2016
K Steding-Ehrenborg P M Arvidsson J Töger M Rydberg E Heiberg M Carlsson H Arheden

The kinetic energy (KE) of intracardiac blood may play an important role in cardiac function. The aims of the present study were to 1) quantify and investigate the determinants of KE, 2) compare the KE expenditure of intracardiac blood between athletes and control subjects, and 3) quantify the amount of KE inside and outside the diastolic vortex. Fourteen athletes and fourteen volunteers underw...

2014
Chi Xu Xiao-Dong Shang Rui Xin Huang

During the propagation of coherent mesoscale eddies, they directly or indirectly induce many effects and interactions at different scales, implying eddies are actually serving as a kind of energy carrier or energy source for these eddy-related dynamic processes. To quantify this dynamically significant energy flow, the multi-year averaged horizontal eddy energy fluxes (EEFs) were estimated by u...

Ghadir Rajabzadeh Mohammad Rahimizadeh

Kinetic parameters of the ammonolysis reaction of dichloroethane in nonaqueous media are studied and the optimum reaction conditions are reported. A suitable reactor for running the reaction under high pressure in the range of 50 to 500 °C is designed. Kinetic behaviours of the system is studied and other reaction parameters such as rate constant, kinetic order, and activation energy are de...

Journal: :Physical review letters 2003
B Portelli P C W Holdsworth J-F Pinton

We address the experimentally observed non-Gaussian fluctuations for the energy injected into a closed turbulent flow at fixed Reynolds number. We propose that the power fluctuations mirror the internal kinetic energy fluctuations. Using a stochastic cascade model, we construct the excess kinetic energy as the sum over the energy transfers at different levels of the cascade. We find an asymmetr...

Journal: :Physical review letters 2003
X M Tong Z X Zhao C D Lin

The kinetic energy distribution of D+ ions resulting from the interaction of a femtosecond laser pulse with D2 molecules is calculated based on the rescattering model. From analyzing the molecular dynamics, it is shown that the recollision time between the ionized electron and the D+2 ion can be read from the D+ kinetic energy peaks to attosecond accuracy. We further suggest that a more precise...

2002
T. S. Jensen V. E. Markushin

The atomic cascades in µ − p and ¯ pp atoms have been studied in detail using new results for the cross-sections of the scattering of highly excited exotic atoms from molecular hydrogen. The cascade calculations have been done with an updated version of the extended standard cascade model that computes the evolution in the kinetic energy from the beginning of the cascade. The resulting X-ray yi...

2006
J. K. Freericks M. Jarrell

The electron-phonon interaction corresponding to the Holstein model (with Coulomb repulsion) is simulated in infinite dimensions using a novel quantum Monte Carlo algorithm. The thermodynamic phase diagram includes commensurate charge-density-wave phases, incommensurate chargedensity-wave phases, and superconductivity. The crossover from a weak-coupling picture (where pairs both form and conden...

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