Through dynamic method to determine the weights of some liquids varied with time while metting the silicon dioxide powder, the contact angles, bending ratio, average capillary radius and wetting work are calculated, such as methanol, ethanol, propanol, butanol and pentanol.

The air permeability process is rather complex and the single capillary radius (r) or the capillary amount in a definite area cannot well express the air permeability.

An equation calculating capillary radius of paper was established based on the consideration of that the permeating depth of printing ink in the paper depends on the printing pressure and printing speed. By measuring the printing pressure,printing speed and the permeating depth of printing ink in porous papers realizes the measurement of the capillary radius of the paper.

In this paper, a new method for the data reduction is proposed on the basis of considering the Fahraeus-Lidqvist effect in biomechanics. It is shown that the relationship between the apparent viscosity μa of the whole blood and the radius a of the capillary may be well fitted by the following expression,1/μa=D1 +D2/a, where D1 and D2 are constants, independent of the radius of the capillary.

When normal fract uring fluid is used,the high clay mineral content,small capillary diameter and b ad formation physical property can cause clay swelling,particles migration,water locking,Jamin effect,vicous fluid retention and solid particle plugging.

It is assumed that the drop radius is much less than the acoustic wavelength but much greater than the capillary radius.

The theory is compared qualitatively with experiment for a model capillary radius frequency function and quantitatively with numerical calculations made on a computer.

The effect of the microinhomogeneity parameters and the form of the capillary radius distribution function on the phase permeabilities is analyzed within the framework of the approach developed.

For flow in a thin axisymmetric capillary, the principal term of the asymptotic expansion of the solution in powers of the characteristic capillary radius to length ratio is obtained.

A gain factor of 1 cm-1 spanning the time interval of 1 ns was found for an optimised arrangement with capillary radius 1.5 mm, peak current 50 kA, quarter period 40 ns and filling gas pressure 0.5 kPa.

The measurement of the whole blood viscosity using the capillary viscometer is an. economic and convenient method in diagnostic and preventive medicine. The measured values of viscosity, however, often differ from each other when different radii of the capillaries are used. In this paper, a new method for the data reduction is proposed on the basis of considering the Fahraeus-Lidqvist effect in biomechanics. It is shown that the relationship between the apparent viscosity μa of the whole blood and the radius...

The measurement of the whole blood viscosity using the capillary viscometer is an. economic and convenient method in diagnostic and preventive medicine. The measured values of viscosity, however, often differ from each other when different radii of the capillaries are used. In this paper, a new method for the data reduction is proposed on the basis of considering the Fahraeus-Lidqvist effect in biomechanics. It is shown that the relationship between the apparent viscosity μa of the whole blood and the radius a of the capillary may be well fitted by the following expression,1/μa=D1 +D2/a, where D1 and D2 are constants, independent of the radius of the capillary.

This paper presented types and mechanisms of the compressible fluid such as air flow through wood. The slip flow and factors affecting the compr-essible fluid flow through spruce (Picea jezoensis var. komarovii) and pine(Pinus koraensis) woods along grain direction were measured over a rangeof the reciprocal average pressure from 1.4 to 48 atm~(-1). The slip flow wasobserved in the air permeability of woods of the two species mentioned above,however, the slip flow component of spruce wood was higher than thatof...

This paper presented types and mechanisms of the compressible fluid such as air flow through wood. The slip flow and factors affecting the compr-essible fluid flow through spruce (Picea jezoensis var. komarovii) and pine(Pinus koraensis) woods along grain direction were measured over a rangeof the reciprocal average pressure from 1.4 to 48 atm~(-1). The slip flow wasobserved in the air permeability of woods of the two species mentioned above,however, the slip flow component of spruce wood was higher than thatof pine. The slip flow percentage of viscous flow (K_S/K_T%) and the ratio ofspecific superficial air permeability to the true permeability (K_G/K_T) at 0.5atm, as well as the slip flow factor b were calculated as 69.39%, 1.69 and0.356 atm respectively for spruce wood and 37.64%1.36 and 0. 197 atm for pine.The slip flow was inversly proportional to effective capillary radius of woodtrue permeability and average air pressure.

This paper presented the theory of the measuring mean effective radiiand numbers of capillary in wood. A study on the effective capillary struct-ure of wood was discussed. Linear plots of axial gas permeability vs. Recip-rocal mean pressure were obtained for spruce (Picea jezoensis var. komarovii)and pine (Pinus koraensis) in agreement with Klinkenberg equation, whichindicate nearly all of the resistance to flow is due to the pit membrane pore.Mean effective pit membrane pore radius(γ_2) was 0.61 and 0.95μm...

This paper presented the theory of the measuring mean effective radiiand numbers of capillary in wood. A study on the effective capillary struct-ure of wood was discussed. Linear plots of axial gas permeability vs. Recip-rocal mean pressure were obtained for spruce (Picea jezoensis var. komarovii)and pine (Pinus koraensis) in agreement with Klinkenberg equation, whichindicate nearly all of the resistance to flow is due to the pit membrane pore.Mean effective pit membrane pore radius(γ_2) was 0.61 and 0.95μm for spruceand pine. The number of conductive pit membrane pore per cm~2 of cross section(n_(pc)) was calculated, yeilding valus of 1218/cm~2 for spruce and 605/cm~2 forpine. The plot of axial permeability vs. reciprocal mean pressure of thebirch (Betula platyphylla) was curvilinear, indicating presence of the condu-ctances in series, which were assumed to be vessel and scalariform perforat-ion plates. The calculated vessel radius (γ_1) and vessel concentration (n_(tc)) were59,8 μm and 645/cm~2. The radius of the opening(γ_2) in the scalariform per-foration plates was 2.01μm.