Results 211 to 220 of about 468,655 (259)
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Computation of afflux ratings and water surface profiles
Proceedings of the Institution of Civil Engineers - Water Management, 2009Afflux is defined as the maximum increase in water level due to the presence of a structure such as a bridge or culvert in a stream. It is difficult to measure directly because the location of maximum water level upstream of the structure varies with flow discharge.
P. A. Mantz, J. R. Benn
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Water Surface Profile for Horseshoe Tunnel
Transportation Engineering Journal of ASCE, 1980A method of calculating water surface profile for USBR standard horseshoe tunnel is developed. The method uses direct-integration process on energy principle. Equations describing geometry of this particular cross section are listed. Numerical values of hydraulic exponents are presented in both table and curves.
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Graphical Determination of Water-Surface Profiles
Journal of the Hydraulics Division, 1956Graphical method which greatly reduces labor involved in using tables prepared by Bakhmeteff; advantage is that graphical method permits direct solution for depth of water at end of reach of prescribed length, whereas in older methods series of trial depths had to be assumed until one was found that yielded required length. Bibliography.
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Escherichia coli virulence genes profile of surface waters as an indicator of water quality
Water Research, 2011We compared the presence of 58 known virulence genes (VGs) associated with Escherichia coli strains causing intestinal (InPEC) and extra-intestinal (ExPEC) infections in three estuarine, four brackish and 13 freshwater sites during the dry and wet seasons.
Masters, N +3 more
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Spillway Water-Surface Profiles
2023A procedure is developed and a computer program written for transferring USBR upper water-surface profile coordinates into terms required for Corps of Engineers design practices. The case of a high vertical weir is considered. The results are compared with WES experimental results and refinements added to effect closer agreement. Finally, equations are
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Two Methods to Compute Water Surface Profiles
Journal of the Hydraulics Division, 1959Two methods for computation of water surface profiles used for development of tail water rating curves and backwater profiles; examples of each method are included which show computational procedure; tail water curves are used in design of power plants, pumping plants, and energy dissipators such as stilling basins; use of backwater curve above dam for
Joe M. Lara, Kenneth B. Schroder
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Water order profiles on phospholipid/cholesterol membrane bilayer surfaces
Journal of Computational Chemistry, 2011AbstractWater is pivotal in the stabilization of macromolecular biological structures, although the dynamic ensemble structure of water near to molecular surfaces has yet to be fully understood. We show, through molecular simulation and fluorescence measurements, that water at the membrane surface is substantially more ordered than bulk water, due to a
David Robinson +3 more
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Profiles of nonylphenol isomers in surface waters from Sri Lanka
Marine Pollution Bulletin, 2011Isomer-specific concentrations of nonylphenol (NP) and their predicted estrogenic potency were investigated in Sri Lankan waters for the first time. The total concentration of 13 NP isomers ranged from 90 to 1835 ng/L, while the predicted estrogenic equivalent concentration ranged from 0.072 to 1.38 ng 17β-estradiol (E2)/L.
Keerthi S, Guruge +2 more
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1DTempPro: Analyzing Temperature Profiles for Groundwater/Surface‐water Exchange
Groundwater, 2013Abstract A new computer program, 1DTempPro , is presented for the analysis of vertical one‐dimensional ( 1D ) temperature profiles under saturated flow conditions.
Emily B, Voytek +5 more
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Nonunique Water‐Surface Profiles in Open Channels
Journal of Hydraulic Engineering, 1993Water‐surface profiles in a channel that includes either a contraction in channel width, or a rise in channel bottom are analyzed using the specific‐energy concept. It is discovered that the water‐surface profiles in this channel for particular flow conditions are not unique; two stable solutions and one unstable solution are found. The flow conditions
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