In the cirrhotic rat, there was a positive correlation betweenportal pressure gradient and the surface density of portal tracts (r=0.44, P<0.05 ), orcollagen of hepatic lobule (r=0.79, P<0.01) or the sum of both (r=0.76, P<0.01).
1. Choosing three kinds of core samples, which permeability are >5 10-3 m2, 1-5 10-3 m2, <1 10-3 m2 respectively, the experiments describing the flow of single-phase oil andwater fluid are conducted, the flow curve of flow velocity vs pressure gradient is drawn.
With several kinds of numerical methods commonly used,the logarithmic surface pressure gradient of an ideal earth-atmosphere system is calculated on 192×96 Gaussian grid points. Comparative experiments show that,on such grid points,calculations with the spline method arebetter than those with spectral methods including T21,T42,and T63.
The mass concentration of PM_(10) rise stage,the peak value stage,the drop stage respectively correspond to the mainland high pressure that continues for days,the low pressure that appears one after the other,and the high pressure gradient field after the front,in which the mainland high pressure is the main background field that creates the heavy mass concentration of PM_(10).
The Experimental results show that compared 73B with 73A, flow performance improved in evidence,loss of flow reduced 21.8% because of used advanced rear load profile, choosed thickness of the inlet and exit edge, matched in reason exit inverse pressure fragment and inverse pressure gradient.
Based on the measurement results, the generation, evolution, unsteadiness and breakdown of the tip leakage vortex are analyzed in detail in the paper, and four main factors on the instability of the tip leakage vortex (adverse pressure gradient, Coriolis force, casing shear flow and turbulence intensity) are also discussed.
After esophageal variceal bleeding (EVB) epsoide from Liver Cirrhosis in 21 patients, the hepatic venous pressure gradient (HVPG) 2 26±0 34kPa was measured, among of 18 cases with portal vascular resistance (PVR)0 23±0 06kPa·ml 1 ·min·kg also calculated subsequently.
Contributions of electric field force,lorentz force and electronic pressure gradient to conduction current were considered in the model. Electricity equation was derived from electron dynamic equation and particle collision theory. Electromagnetic field equation was simplified from Maxwell's equations.
Research on the Pressure Gradient of Air Cleaning and Conditioning System in Animal Building
Large pressure gradient in the central negative shear region drives resistive interchange modes with the unstable window extending to r / a ≈ 0.2, but not covering the low shear region around the shear reversal point.
而且不稳定性增长率随环向模 n 的变化是振荡的,显示具有 infernal mode的特征。 对于电阻交换模不稳定性,我们在中心负磁剪切区对不稳定性判据进行ε(反环径比)展开,结果显示该区域相当大的压强梯度驱动电阻交换模不稳定,但不稳定窗口只扩展到 rmin/a≈0.2,并不覆盖发生 low-n modes 不稳定性的低磁剪切区域。
Speed of flow in the wide fissure that has an acute angle with the pressure gradient is faster than that in a narrow fissure with a high angle with the pressure gradient.
The coefficient responsible for the mechanocaloric effect for the case of the gas flow under the pressure gradient was also determined using Onsager relations for the kinetic coefficients calculated with account of the effect of surface forces.
Method of local similarity for a three-dimensional laminar boundary layer with pressure gradient
The hypersonic boundary layer has several unique features, one of which is its relatively slight sensitivity to a negative pressure gradient.
Moreover, under certain conditions we can neglect the term with the pressure gradient in comparison with the Joulean dissipation in the heat transport equation, which permits separation of the thermal problem from the dynamic.