نتایج جستجو برای: newtonian uid
تعداد نتایج: 12858 فیلتر نتایج به سال:
The kinetic theory of precipitating electrons with Maxwellian source plasma yields the well-known current-voltage relationship (CV-relationship; Knight formula), which can in most cases be accurately approximated by a reduced linear formula. Our question is whether it is possible to obtain this CV-relationship from ̄uid theory, and if so, to what extent it is physically equivalent with the more...
Herpes simplex virus 1 meningo-encephalitis was ascertained in a 63-year-old immunocompetent man. To determine the duration of the persistence of herpesvirus DNA in the central nervous system, the cerebrospinal ̄uid was periodically monitored by polymerase chain reaction for 53 days. In addition to HSV-1, Epstein ± Barr virus DNA was detected in the cerebrospinal ̄uid 9 days after disease onset. ...
The analytical solution of the Ornstein± Zernike equation in the mean-spherical approximation for a Yukawa ̄ uid and adhesive hard sphere Yukawa ̄ uid with factorizable coe cients is used to derive a simple form for the thermodynamic properties for both mixtures. The second system contains an additional interaction. However, the general thermodynamic expressions were obtained in similar form for...
Several isotropic, homogeneous cosmological models containing a self-interacting minimally coupled scalar eld, a perfect uid source and cosmological constant are solved. New exact, asymptotically stable solutions with an in ationary regime or a nal Friedmann stage are found for some simple, interesting potentials. It is shown that the uid and the curvature may determine how these models evolve ...
A numerical simulation to investigate the Non-Newtonian modeling effects on physiological flows in a three dimensional idealized artery with a single stenosis of 85% severity is given. The wall vessel is considered to be rigid. Oscillatory physiological and parabolic velocity profile has been imposed for inlet boundary condition. Determination of the physiological waveform is performed using a ...
We have studied the superruid density and the speciic heat of the x ? y model on lattices L L H with L H (i.e. on lattices representing a lm geometry) using the Cluster Monte Carlo method. In the H-direction we applied staggered boundary conditions so that the order parameter on the top and bottom layers is zero, whereas periodic boundary conditions were applied in the L-directions. We nd that ...
For a model known to exhibit liquid–liquid transitions, we examine how varying the bond orientational flexibility affects the stability of the liquid–liquid transition relative to that of the crystal phases. For very rigidly oriented bonds, the crystal is favored over all amorphous phase transitions. We find that increasing the bond flexibility decreases both the critical temperature Tc for liq...
We introduce a new method to investigate stability of work-conserving policies in multiclass queueing networks. The method decomposes feasible trajectories and uses linear programming to test stability. We show that this linear program is a necessary and suucient condition for the stability of all work-conserving policies for multiclass uid queueing networks with two stations. Furthermore, we n...
As a platform for this Adjunct Guide to Driving With Care, we begin by presenting a number of prominent concepts and theories that provide a conceptual framework for understanding, interpreting and predicting the development, dynamics, and outcome of adolescent problems. We look at theories that are particularly relevant to understanding the causal and dynamic factors of underage AOD use and ab...
The Uniform Information Density (UID) hypothesis links production strategies with comprehension processes, predicting that speakers will utilize flexibility in encoding in order to increase uniformity in the rate of information transmission, as measured by surprisal (Jaeger, 2010). Evidence in support of UID comes primarily from studies focusing on word-level effects, e.g. demonstrating that su...
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