Results 11 to 20 of about 49,323 (257)

Comparison performance of artificial neural network based method in estimation of electric conductivity in wet and dry periods: Case study of Gamasiab river, Iran [PDF]

open access: yesJournal of Applied Research in Water and Wastewater, 2019
The frequent occurrences of wet and dry in the catchment area of the Gamasiab river located in the west of Iran, in addition to affecting the quantitative status of surface water, has caused changes in the water quality of the basin.
Nasrin Abozari   +5 more
doaj   +1 more source

Method for Determining the Fracture Parameters of Fully Graded Dam Concrete

open access: yesBuildings, 2022
This paper describes a method for determining the initiation and unstable toughness of fully graded concrete of arbitrary specimen size. The method first predicts the initiation and peak loads of concrete specimens of any size, as well as crack length-to-
Xiaofeng Gao   +7 more
doaj   +1 more source

Prediction Model of Compressive Strength Development in Concrete Containing Four Kinds of Gelled Materials with the Artificial Intelligence Method

open access: yesApplied Sciences, 2019
Green concrete has been widely used in recent years because its production compliments environmental conservation. The prediction of the compressive strength of concrete using non-destructive techniques is of interest to engineers worldwide. Such methods
Guohua Liu, Jian Zheng
doaj   +1 more source

Control of physicochemical parameters of spring waters near quarries exploiting limestone rock [PDF]

open access: yesE3S Web of Conferences, 2021
The goal behind this work is defined as the study of the quality of water from karst springs near quarries exploiting limestone rock in order to assess its adequacy with domestic uses. At that end, a study at the mountain level was carried out.
Fattah Ghizlane   +3 more
doaj   +1 more source

Hydraulics of Selected Hydraulic Structures

open access: yes, 2017
Hydraulic structures are human-made systems interacting with surface runoff in urban and rural environments including structures to assist storm water drainage, flood mitigation, coastal protection, or enhancing and controlling flows in rivers and other water bodies.
Chanson, H, Felder, S
openaire   +4 more sources

Simulation of sediment accumulation for the river watershed using SWAT software: A case study on Ahar Chai river watershed in northwest of Iran [PDF]

open access: yesJournal of Applied Research in Water and Wastewater
This paper presents the results of a study that simulates the sediment routing of the Ahar Chai river using the hydrologic model which calculates the accuracy of using the soil and water assessment tool (SWAT) to simulate the runoff and sediment in ...
Anis Shafinezhad   +2 more
doaj   +1 more source

Algorithm of development for system operation monitoring of water-soluble bases in hydraulic structures [PDF]

open access: yesОмский научный вестник, 2020
The article discusses algorithm of development of the monitoring system operation for water-soluble bases of a hydraulic structures based on the conductometric control method using special technical measuring instruments.
K. P. Latyshenko, T. N. Nurmagomedov
doaj   +1 more source

Free Flow and Discharge Characteristics of Trapezoidal-Shaped Weirs

open access: yesFluids, 2020
A number of studies have considered the effects of weir design variations on the free- and submerged-flow characteristics of trapezoidal broad-crested weirs. It appears that the hydraulics of short-crested weir flows have received little attention; thus,
Yebegaeshet T. Zerihun
doaj   +1 more source

LIDAR Scanning as an Advanced Technology in Physical Hydraulic Modelling: The Stilling Basin Example

open access: yesRemote Sensing, 2021
In hydraulic engineering, stilling basin design is traditionally carried out using physical models, conducting visual flow observations as well as point-source measurements of pressure, flow depth, and velocity at locations of design relevance.
Rui Li   +2 more
doaj   +1 more source

Numerical simulations of unsteady flow field and non-uniform and non-equilibrium sediment transport in river bend [PDF]

open access: yesمهندسی منابع آب, 2020
Flow in river usually has a 3 dimensional character. While 3 dimensional flow simulations is time consuming process, enhanced 2D numerical modeling with depth and width averaged are introduced.
Mohsen Maghrebi   +1 more
doaj  

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