Results 21 to 30 of about 1,071,876 (307)

Remediation of contaminated sand by Cd ions with variation operation: Batch and flushing column with foam and without foam of SDS surfactant

open access: yesSouth African Journal of Chemical Engineering, 2023
An anionic surfactant, Sodium dodecyl sulfate (SDS), was applied to remove Cd ions as contaminants on the sand surface. The remediation operation approach was used, such as batch, flushing column without foam, and with foam of SDS solution.
Bode Haryanto   +4 more
doaj   +1 more source

Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration [PDF]

open access: yesJournal of Structural and Construction Engineering, 2018
In this study, some researches about end rigid zones parameters and column removal duration in progressive collapse reinforced concrete frames are taken place.
Hamid Reza Ashrafi   +1 more
doaj   +1 more source

Investigating the Influence of Column Depth on the Treatment of Textile Wastewater Using Natural Zeolite

open access: yesMolecules, 2021
Textile industry production processes generate one of the most highly polluted wastewaters in the world. Unfortunately, the field is also challenged by the availability of relatively cheap and highly effective technologies for wastewater purification ...
Timoth Mkilima   +8 more
doaj   +1 more source

Structural Behavior of RC Beam-Column Subassemblages under a Middle Column Removal Scenario [PDF]

open access: yesJournal of Structural Engineering, 2013
AbstractSix RC beam-column subassemblages, consisting of two single-bay beams, one middle joint, and two end column stubs, were quasi-statically tested under a middle column removal scenario. The tests were aimed at investigating whether there are alternate load paths that can mitigate progressive collapse.
Yu, Jun, Tan, Kang Hai
openaire   +2 more sources

Progressive Collapse Analysis of multi-story building under the scenario of multi-column removal [PDF]

open access: yesE3S Web of Conferences, 2019
Recent studies regarding progressive collapse resistance of buildings considered only single critical column removal scenario. However, limited investigations have been conducted so far to assess multi-column removal scenarios.
Nassir M.   +4 more
doaj   +1 more source

A Simplified Method for Assessing the Response of RC Frame Structures to Sudden Column Removal

open access: yesApplied Sciences, 2020
Column loss is a type of damage that can occur in frame structures subjected to explosions or impacts. The response of such structures largely depends on the capacity of the assembly of elements and on the inertia effects due to the sudden nature of the ...
Valerio De Biagi   +3 more
doaj   +1 more source

Progressive collapse scenario in steel structures with irregularity in height

open access: yesGrađevinar, 2021
the overload caused by removal of these elements can cause damage and Progressive Collapse (PC) in structures. Therefore, the effect of sudden column removal and structural capacity against PC scenarios in medium and high-rise buildings is investigated ...
Ali Esfandiari Fard   +2 more
doaj   +1 more source

Heavy metals removal from landfill leachate by coagulation/flocculation process combined with continuous adsorption using eggshell waste materials

open access: yesWater Science and Technology, 2021
The use of agricultural waste materials to remove heavy metals from wastewater is attractive due to its simplicity and economic efficiency. In this study, the applicability of calcined eggshell waste materials (CES) for heavy metals removal from real ...
A. Q. Jaradat   +2 more
doaj   +1 more source

Filtration and transport of heavy metals in graphene oxide enabled sand columns [PDF]

open access: yes, 2014
A fixed-bed sand column with graphene oxide (GO) layer was used to remove heavy metals (Cu(II) and Pb(II)) from an aqueous solution injected under steady flow.
Ding, Zhuhong   +3 more
core   +3 more sources

Performance of bolted steel-beam to CFST-column joints using stiffened angles in column-removal scenario [PDF]

open access: yes, 2019
This paper presents three experimental investigations on the performance of steel-beam to CFST-column joints using stiffened angle, long bolts and fin plate under a middle column removal scenario. Three specimens were designed and tested.
Fu, F., Gao, S., Guo, L., Xu, M.
core   +1 more source

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