surface reservoir
1.ANALYSIS AND CALCULATION OF FREE WATER SURFACE EVAPORATION FROM RESERVOIR AND LAKE
2.Basing on analysis of the situation of water resources in Loess plateau areas, this paper propounded the engineering and agricultural technology and the method with direct and indirect, which draw rainwater on road surface into "soil reservoir" of farmland or water cellar with free atmospheric pressure using silt delve of eliminate energy.
4.Moreover, a series of solution to these difficulties are brought forward: applying the theory of fold related to fault to interpret complex structural belts in piedmont: analyzing the features of the surface and underground seismic reservoir prediction and porosity model construction to predicate effectively the texture and quality of sandbodies; using structural model to direct the construction of velocity model and process prestack migration imaging of seismic data; utilizing interval velocity to forecast reservoir pressure: improving the drilling technology for pressure detection and prompt protection of vertical well against incline well.
5.Moreover, the supplying system of fresh water for the surface waterways will be improved, water stored at Miyun and Guanting reservoir will be effectively used to provide fresh water for the downstream. Management and monitoring of the urban waterways shall be strengthened to ensure that water quality can meet their respective functional standards.
7.2. The runoff coefficent of soil surface of forest land is 53% less than that of clearage, and the rate of transporting sand is lower 99.1%, so that closing hillsides to facilitate afforestation has a great contribution to conserving water and soil, decreasing the acceretion of reservoir and prolonging the life of reservoir;
9.Sequence correlation shows Silurian transgression onlapped from northwest to southeast direction. The sandstonebody, developed in transgression system tract (TST), better reservoir are mainly located near the maximum marine flooding surface, i.e. thefavorable position for marine sandstone body development would be the upper part of TST and the lower part of high system tract (HST).
10.A simple, sensitive and rapid ultraviolet spectrophotometry for determination of nitrite is described It is based on the reaction of nitrite with 2,3 diaminonaphthalene β cydodextrin (β CD) has an enhancement on the absorption of this system The absorbance is proportional to the nitrite concentration in the range of 0 01～2mg/L in the sample solution The detection limit is 9 4 μg/L The method was applied to the determination of nitrite in reservoir and surface runoff samples
