Results 1 to 10 of about 1,552,042 (164)

Micro free flow electrophoresis [PDF]

open access: yesLab on a Chip, 2018
This review focuses on the fabrication methods, theory, and applications of micro free flow electrophoresis (μFFE), a continuous separation technique particularly well suited for microscale purifications and online monitoring applications.
Alexander C. Johnson, Michael T. Bowser
openaire   +3 more sources

Is the free cash flow hypothesis valid in Turkey?

open access: yesBorsa Istanbul Review, 2017
This study tests the validity of the free cash flow hypothesis in the context of firms traded on Borsa Istanbul. The study applies a panel regression to a data set composed of 1267 observations from 227 companies during the period 2008–2014.
Eyup Kadioglu, Ender Aykut Yilmaz
doaj   +3 more sources

Classification of surface regimes over broad-crested gabion weir [PDF]

open access: yesمهندسی عمران شریف, 2021
The present study investigate 12 experimental broad-crested gabion models. In order to investigate the flow regimes over this structure, hydraulic characteristics were measured under different submergence conditions. A comparison of coefficient discharge
S. S‌a‌l‌e‌h‌i   +2 more
doaj   +1 more source

Overflow and underflow within the broad-crested gabion weir in free flow with sand bed conditions [PDF]

open access: yesمهندسی عمران شریف, 2022
In order to calculate and predict the discharge flow through and over the gabion weir, 33 experimental broad-crested gabion models were carried out through the sand bed condition.
S. Salehi   +3 more
doaj   +1 more source

Evaluation of the hydraulic behavior of the composite hydraulic structure considering a bed flume with special obstacle [PDF]

open access: yesINCAS Bulletin, 2022
The experimental simulation between the composite hydraulic structure and the found obstacles in the downstream region is a challenging process due to the energy losses and kinematic dissipation. The current work focuses on a comparative analysis of free
Rafi M. QASIM   +3 more
doaj   +1 more source

Experimental Study of Discharge Coefficient of U-Shaped Sluice Gate under Free and Submerged Flow Conditions [PDF]

open access: yesJournal of Hydraulic and Water Engineering, 2023
Sluice gates are among the flow control structures that are used to measure and control the flow in water conveyance channels. In this research, the geometrical and hydraulic parameters affecting the discharge coefficient of the sluice gate (U-shaped ...
F. Dehghani   +2 more
doaj   +1 more source

Experimental Study of Effect of Flow Drop Height on Downstream Bed Topography of Type-A Trapezoidal Piano Key Weir [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2022
: Predicting the extent of local scouring downstream of hydraulic structures has been one of the topics of interest to researchers in recent years. In this research, downstream scouring of a trapezoidal piano key weir under changes in the hydraulic ...
Chonoor Abdi Chooplou   +4 more
doaj   +1 more source

A Note on the Discharge over Full-width Rectangular Sharp-‎crested Weirs and Weirs of Finite Crest Length‎ [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2023
The head-discharge relationship for sharp-crested weirs is developed based on the energy consideration upstream and at the crest of the weir. The discharge for weirs of finite crest length is estimated by correlating the critical depth and total energy ...
Amir H. Azimi, Nallamuthu Rajaratnam
doaj   +1 more source

Simulation of the Hydraulic Performance of Parallel Pivot Weirs with Different Angles [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
Pivot weirs are one of the most important structures for regulating the water level in rivers and canals. These weirs are constructed with one or more gates in a row in the waterways.
B. Khatamipour   +3 more
doaj   +1 more source

Calibration 7" – Cutthroat Flume as New Size for Discharge Measurement at Free Flow Condition [PDF]

open access: yesEngineering and Technology Journal, 2020
This paper aims to conduct a series of laboratory experiments in case of steady-state flow for the new size 7 ̋ throat width (not presented before) of the cutthroat flume.
Jaafar Maatooq, Muna Ibraheem
doaj   +1 more source

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