2.18 m/s in wet seasons and 1.56 m/s in dry seasons at fengjie. After the impoundment (water level 135 m), the flow velocity is 1.26 m/s at Fuling, 0.43 m/s at wanzhou, and 0.32 m/s at fengjie.
在奉节段丰水期和枯水期的平均流速分别为2.18 m/s和1.56 m/s．蓄水后(135 m水位)，涪陵段的水流速度为1.26 m/s at Fuling，万州段和奉节段的分别为0.43 m/s和0.32 m/s。
coli was also much smaller than that of the tracer. The increase in flow velocity from 0.214 to 0.470 cm min~(-1) resulted in marked increase in E. coli from 0.05 to 0.2 at the peak of BTC,but decrease in(retention) coefficient.
当水流速度由0.214 cm min-1增至0.470 cm min-1时,大肠杆菌BTC峰值由0.05增至0.2,且随速度的增加,滞留系数减小。
With the treatment time 12 h, coil group 3 groups, output power 468 W, pulse frequency 65 kHz and flow velocity 0.3 m/s , the amounts of total bacterium and coliform per milliliter were decreased from 3.9×10 7 to 1.5×10 2 and from 2.4×10 6 to 3.6×10 2 respectively. Under the same test conditions, the sterilization effects of electromagnetic field on E. coli cells were also good .
The habitat preference of Chinese crocodile lizards is: middle width (1-2 m) and length (1-2 m) of backwater pool,above the water body,slow water velocity,middle perch height (0.5-1.0 m),small perch diameter (≤1.00 cm),far away from human disturbance (distance>500 m),broadleaf forest and coverage >60%.
Under flood irrigation, the pore water velocity was great,NO - 3 transported quickly, the dispersion strong and NO - 3 concentration mainly distributed out of root zone after irrigation, which was not convenient for crop uptake and eased to pollute under grounder water.
The result showed that the optimum effects of water purification were obtained when the water flow velocity was 0.84 m/s, the intervals of both adding water purifying agent and adding coagulant aids were 1 minute.
The average suspending velocity was close to the average current velocity and the calculated suspended distances at different water depth and current velocity showed only slight difference in comparing with the measured ones.
Because the current velocity is smaller than the wave particle velocity in real coastal engineering, the affect of current on waves is neglected in the numerical model, but the affect of radiation stress of waves on current was considered.
Based on potential flow theory, current velocity and ferrying velocity is considered. Confirmative conditions of the velocity potential are established by means of transforming coordinates.
Sap flow velocity at the upper position of the trunk is higher than that of the middle and lower position, but cumulative flux is not significantly different among the upper, middle and lower sections.
Water velocity at male courtship points was positively correlated with a condition factor for males, indicating that males of poor physical condition do not court in fast water currents.
The distribution law of pore pressure, pore water velocity and contaminant concentration in unsaturated zone has been presented under the conditions of with coupling and without coupling gas phase.
In the summers of 1987, 1988 and 1989, water velocity was varied in a large racetrack flume, in order to change both water velocity and bottom sediment transport.
It depends on the oxygen concentration, water flow velocity, temperature, the presence of corrosive impurities, and the physico-chemical state of the metal surface.
The Kd is a very important factor in reactive transport, representing the source/sink term, and explaining the difference between the velocity of transport of non-conservative elements (Kd>amp;gt;0) and water flow velocity.
Photosynthesis and respirationincreased with increasing water flow velocity.Rates of oxygen respiration were positivelycorrelated to the oxygen concentration of thewater.
The maximum flow velocity is usually related to the deeper water depth, but irregular water column distribution of flow current velocity results often from the vortices' current associated with river knots.
However, in the river reach near the river knots, the water column distribution of flow current velocity does not fit the semi-log law, showing the irregular flow current pattern.
The energy of the excited waves is estimated and the moments of the ion distribution function in the saturation stage are determined as functions of the current velocity for parameters characteristic of the neutral sheet of the Earth's magnetotail.
The problem of current sheet intensification is analyzed (approximately) by considering two competitive processes: an increase in the current velocity in the plasma sheet and a development of convection.
Digital image processing techniques, including median filtering, logical erosion-expansion, labeling, classifying and pairing, are applied to aerial photographs for the purpose of performing automatic measurement of water flow. Satisfactory results have been obtained despite the poor quality of the original image.
This paper is concerned with analyzing quantitatively the magnitude,the variation with time and depth, and the relative importance of each resistance to water flow in SPAC, based on the simulating experiment data of soil moisture uptake by plant roots and on the electrical analog principle of water flow.The main resistances to water flow in SPAC take place in the two symmetrical connecting "chains" through which water enters the roots and emits out of the leaves of the plants. Root resistance to water absor...
In a changing current field, the main problem to be solved in current sailingis: how to obtain the correct preset angle of crab and the time for completing theplanned voyage for a given-speed ship navigating on a preset course. Since theparameters for the changing current field are unable to be worked out, approximatecalculations are used as substitutes. After fully exploring the current velocity triangle in current sailing, the authorputs for ward a mathematic model in solving current velocity triangle. By...
水流速度
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