نتایج جستجو برای: side weir
تعداد نتایج: 211673 فیلتر نتایج به سال:
Of the many hydraulic structures developed by man, the weir is perhaps the oldest. Weirs are used for the measurement of discharge and regulation of water flow. The most common types of weirs are broad-crested, sharp-crested, circular-crested and cylindrical, and ogee crest weirs. Advantage of the circular-crested and cylindrical weir compared to the other weirs include simplicity of design, st...
Of the many hydraulic structures developed by man, the weir is perhaps the oldest. Weirs are used for the measurement of discharge and regulation of water flow. The most common types of weirs are broad-crested, sharp-crested, circular-crested and cylindrical, and ogee crest weirs. Advantage of the circular-crested and cylindrical weir compared to the other weirs include simplicity of design, st...
The discharge coefficient of labyrinth weirs increases with increasing the crest length in a certain width range. The present research was carried out in a laboratory flume with a length of 8 m, a width of 0.6 m, and a height of 0.6 m. The discharge coefficient of two-cycle symmetric and asymmetric rectangular labyrinth weirs was experimentally measured. The dimensional analysis by the Buckingh...
Accurate measurement of stream flow is an important component of environmental water quality monitoring. Flow rates in small streams can be conveniently monitored using weirs. The objective of this study was to design, install, and calibrate a series of permanent compound weirs for use in monitoring flow and water quality in a first order riparian wetland stream that exhibited great variability...
In the 1980s, a fundamental shift took place in Dutch economic policy: Keynesian demand-management was exchanged for neoliberal supply-side approach. The single most influential account of this transformation has focused on consensus among corporatist policymakers as key to reforms. It is origin story ‘polder model’. problem however, that there surprisingly little evidence 1980s. Instead consen...
Thin-plate V-notch weirs are commonly used as measuring devices in flumes and channels. Herein, the discharge calibration of a large 90o V-notch weir was performed using an unsteady volume per time technique. The weir overflow was initially shut. The sudden opening of the gate was associated with an initial phase of transient water motion associated with a negative wave propagating in the reser...
Hydrological changes affect not only the physicochemical factors and habitat structure of river ecosystems, but also biological communities sensitive to environmental changes, such as zooplankton. In this study, we investigate effects weir opening on variables topographic structures at Sejong Weir in South Korea monitor resulting distribution zooplankton community. led increased dissolved oxyge...
BACKGROUND Given the difficulties of using indirect calorimetry in many intensive care units, clinicians routinely employ predictive equations (the Harris-Benedict equation [HBE] and Schofield equation are commonly used) to estimate energy expenditure in critically ill patients. Some extrapolate CO(2) production (V CO(2)) and O(2) consumption (V O(2)) by the Weir derivation to estimate energy e...
A nonlinear multiobjective programming problem is considered. Weak, strong and strict converse duality theorems are established under generalized second order (F, α, ρ, d)-convexity for second order Mangasarian type and general Mond-Weir type vector duals.
The Objective of this study is to estimate the form drag due to vegetated weirlike obstacles. Head loss due to submerged vegetated dikes and groins has been modeled by expansion loss form drag model (Energy and momentum balance principles) and it has been compared with experimental data. An experimental study has been carried out on a scaled physical model in the Laboratory of Environmental Flu...
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