The study shows that the sediment yield from runoff shearing take on a good positive correlation with the average runoff shear stress, and the critical shear stress of the runoff, by which the soil grain can just be dispersed, is 0.258 N/m~2.

Results indicated that linear relationship was existed between average runoff shear stress and sediment yield, soil erodibility in the experiment was 178.5g/(Pa·min), and the critical shear stress value was 0.54 Pa.

Linear relationship existed between sediment transportation ratio and shear stress, and critical shear stress of the flow was (1.701) (N/(m~2·min)), consequently the critical flow depth for the occurrence of rill erosion had inverse ratio with the sine value of slope gradient.

Results indicated that linear relationship was existed between average runoff shear stress and sediment yield, soil erodibility in the experiment was 178.5g/(Pa·min), and the critical shear stress value was 0.54 Pa.

4. The relationships of runoff shear stress, the flow energy consume and the unit steam power with the sediment transport rate were found, and the critical dynamical condition of the soil erosion were studied.

The shape and the critical dimensions of microvoids depending on the critical shear stress were found.

Adhesion strength of L929 and Hela B cells in term of critical shear stress of detachment in response to various concentrations of serum was measured.

The critical shear stress was also calculated for eleven boundaries with csl structure and found to roughly decrease with increasing twist angle.

Problems associated with the use of the nonstationary method of pulsed changing of the rate of shear for the measurement of important viscoplastic properties of whole blood - the critical shear stress τ0 and the plastic viscosity μp - are considered.

In the range of pH 6.3-7.6, the oversouring of blood mainly influences the critical shear stress, and the Caisson viscosity depends only weakly on the acid-base equilibrium.

This relaxation transition is characterized by a critical shear stress value invariant with respect to the molecular weight, molecularweight distribution and temperature.

in all cases decreased the critical shear stress value on average 0.8 Pa.

A critical shear stress value of 2.5 dyn/cm2 was measured in this last study with normal erythrocytes suspended in a saline solution of dextran 80.

This could be easily achieved by lowering the critical shear stress value to 106 Pa.

Considering the interaction between waves and soft muddy bed, a model for the calculation of wave shear stress on soft is presented in this paper. On the basis of the calculated results for wave shear stress, the critical shear stress for the initial entrainment of cohesive sediment on muddy bed with different densities by waves is investigated by flume tests. A formula of the critical shear stress for the initial entrainment of cohesive sediment on various density muddy beds by waves is obtained and compared...

Considering the interaction between waves and soft muddy bed, a model for the calculation of wave shear stress on soft is presented in this paper. On the basis of the calculated results for wave shear stress, the critical shear stress for the initial entrainment of cohesive sediment on muddy bed with different densities by waves is investigated by flume tests. A formula of the critical shear stress for the initial entrainment of cohesive sediment on various density muddy beds by waves is obtained and compared with the formula of the critical shear stress of cohesive sediment by currents.

On the basis of scouring experiments indoors, the mechanism of the drop pit' genesis and development during the process of slope erosion is analyzed, and the relationship among headcut, bank landslip and downcut has been expounded. The variation regularity of the runoff and the sediment yield in each discharge was studied, and the relationship among the sediment, the runoff and the proportion of the rill area was obtained. Analyzing each erosion stress on the slope during the scouring, we get the runoff shearing...

On the basis of scouring experiments indoors, the mechanism of the drop pit' genesis and development during the process of slope erosion is analyzed, and the relationship among headcut, bank landslip and downcut has been expounded. The variation regularity of the runoff and the sediment yield in each discharge was studied, and the relationship among the sediment, the runoff and the proportion of the rill area was obtained. Analyzing each erosion stress on the slope during the scouring, we get the runoff shearing sediment equation. The study shows that the sediment yield from runoff shearing take on a good positive correlation with the average runoff shear stress, and the critical shear stress of the runoff, by which the soil grain can just be dispersed, is 0.258 N/m~2.

In this research, soil erosion and sediment yield was calculated by runoff shear stress, runoff energy consumption and runoff power theory respectively. Results indicated that linear relationship was existed between average runoff shear stress and sediment yield, soil erodibility in the experiment was 178.5g/(Pa·min), and the critical shear stress value was 0.54 Pa. Results by energy consumption implied that there was also linear relation between sediment transportation and energy consumption of unit runoff...

In this research, soil erosion and sediment yield was calculated by runoff shear stress, runoff energy consumption and runoff power theory respectively. Results indicated that linear relationship was existed between average runoff shear stress and sediment yield, soil erodibility in the experiment was 178.5g/(Pa·min), and the critical shear stress value was 0.54 Pa. Results by energy consumption implied that there was also linear relation between sediment transportation and energy consumption of unit runoff width: Dr=14.61(ΔE-0.37), which indicated that soil erodibility was 14.61 g/J, with critical energy consumption of 0.37 J/(min·cm). Results by runoff power theory showed that sediment transportation increased with the increase of runoff power, and simple linear relation was also regressed: Y=8942.2x-68.676. Generally, these three theories showed its advantage in describing soil erosion process on slope, among which results from energy consumption theory was simpler and more accurate, and was more convenient in describing soil erosion on slope.