Results 1 to 10 of about 85,974 (294)

Impact of tidal fluctuations on bacterial community structure in Wuyuan Bay: A comparative analysis of waters inside and outside the tidal barrage. [PDF]

open access: yesPLoS ONE
The tidal barrage at Wuyuan Bay effectively mitigated the odor from the tidal flat during ebb tide, however, its effect on bacterial community structure in waters are still unclear.
Dandan Xie   +6 more
doaj   +2 more sources

DURABILITY OF BLAST-FURNACE SLAG CEMENT CONCRETE WITH DIFFERENT CURING METHODS [PDF]

open access: yesJES: Journal of Engineering Sciences, 2022
The concrete industry in Egypt has incorporated Blast Furnace Slag Cement Concrete, BFSCC, as a replacement to Ordinary Portland Cement Concrete, OPCC, in favor to resist harsh conditions related to water hydraulic structures.
M. Anwar, Dina Emarah
doaj   +1 more source

PERFORMANCE OF FLY ASH CONCRETE AGAINST SULFATE ATTACK [PDF]

open access: yesJES: Journal of Engineering Sciences, 2021
In this research, the effect of using fly ash on sulfate resistance of concrete was investigated. Studied mixes in this work are part of a research project that investigates the influence of using binary and ternary cementitious materials on different ...
Mohamed ANWAR, Aly Makhlouf
doaj   +1 more source

Using Dynamic Tests to Evaluate Structural Status of Barrage Before and After Rehabilitation [PDF]

open access: yesJES: Journal of Engineering Sciences, 2023
Many old barrages along the Nile river face different problems, such as increased discharge or/and differences in head, scour, and material aging. Therefore, the irrigation networks need to be enhanced by upgrading the main controlling water structure ...
Yasser Elhakem, Dina Emarah
doaj   +1 more source

Chloride permeability through different specimen surfaces of blast-furnace slag cement concrete with and without air-entraining agent

open access: yesApplications in Engineering Science, 2023
Numerous research has investigated the effects of blast furnace slag as a cementitious or substitute cementing material on the characteristics of concrete.
M. Anwar, Dina A. Emarah
doaj   +1 more source

Resistance of concrete containing ternary cementitious blends to chloride attack and carbonation

open access: yesJournal of Materials Research and Technology, 2020
The resistance of concrete containing by-products materials to the combined influence of carbonation and chloride ingress has been studied. The fly ash (FA) and silica fume (SF) as by-products materials were used with ordinary Portland cement (OPC) in ...
M. Anwar, Dina A. Emarah
doaj   +1 more source

Productivity and profitability of modern irrigation methods through the application of on-farm drip irrigation on some crops in the Northern Nile Delta of Egypt

open access: yesAlexandria Engineering Journal, 2023
Irrigation method has a great effect on water consumption, productivity and profitability of certain crops. Egypt is suffering from water scarcity, it is of great importance to apply modern irrigation techniques to achieve highest productivity with ...
M.A.M. Moursy   +3 more
doaj   +1 more source

Le démantèlement des ouvrages hydrauliques - Éléments de réflexion à partir du contexte nord-américain

open access: yesSciences, Eaux & Territoires, 2021
La mise en œuvre de la politique de restauration de la continuité écologique des cours d'eau est aujourd'hui conflictuelle en France, avec de nombreuses oppositions de la part de propriétaires de moulins, hydroélectriciens et riverains.
L. DRAPIER
doaj   +1 more source

A Comparative Analysis of the Impact of Barrage and Comments on Video Popularity

open access: yesIEEE Access, 2021
In recent years, watching online videos has gradually become an indispensable part of netizens’ daily lives. Almost all video sites have added the barrage function. Both barrage and comments are two important ways for users to participate and play
Fudong Wang, Xiayu Fu, Zengyao Sun
doaj   +1 more source

Two-Dimensional Barrage Jamming against SAR Using a Frequency Diverse Array Jammer

open access: yesSensors, 2023
Due to the modulation of tiny frequency offset on the array elements, a frequency diverse array (FDA) jammer can generate multiple range-dimension point false targets, and many deception jamming methods against SAR using an FDA jammer have been studied ...
Jingke Zhang   +5 more
doaj   +1 more source

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