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Now showing items 10132-10151 of 49774
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Experimental analysis of additively manufactured thin-walled heat-treated circular tubes with slits using AlSi10Mg alloy by quasi-static axial crushing test
( Elsevier Ltd , 2019 , Article)In this study, additively manufactured aluminum thin-walled tubes with different slit dimensions are proposed to improve energy absorption efficiency. A total of 18 samples, which varied in the number of slits, slit length, ... -
Experimental analysis of double and triple glazed facades with different shading devices in Qatar
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)The design of fully-glazed facades on buildings has become very popular, especially in hot regions where the use of natural ventilation is not recommended. The integration of shading devices to facade surfaces has been ... -
Experimental analysis of gravity and buoyancy powered energy generation storage systems
( Springer Science and Business Media Deutschland GmbH , 2021 , Conference Paper)The concept of harnessing energy from buoyancy as well as the ability to have underwater energy storage is an area of research that, compared to other renewable energy generation techniques, is relatively unexplored. This ... -
Experimental and analytical study on strengthening of reinforced concrete T-beams in shear using steel reinforced grout (SRG)
( Elsevier Ltd , 2019 , Article)The use of steel reinforced grout (SRG) has emerged as a promising technique for the strengthening and retrofitting of reinforced concrete (RC) structures, however, the experimental evidence on its application for ... -
Experimental and Biological Investigation of Hemodynamics-induced Injuries for Cardiovascular Disorders
( Qatar University Press , 2021 , Poster)Introduction:Abdominal aortic aneurysm (AAA) is a degenerative disease process of the abdominal aorta that leads to a focal dilation and irreversible remodeling of the arterial wall. In this condition, the aortic vessel ... -
EXPERIMENTAL AND CFD INVESTIGATION OF SOLAR CENTRAL RECEIVER TUBES
(2018 , Master Thesis)Lower electricity cost corresponds to high efficiency, which in turn corresponds to high operating temperatures in Concentrated Solar Power technology. Central receiver of such system constitutes 15% of the cost and plays ... -
Experimental and DFT Approach on the Determination of Natural Gas Hydrate Equilibrium with the Use of Excess N2 and Choline Chloride Ionic Liquid as an Inhibitor
( American Chemical Society , 2016 , Article)This work presents the characterization of hydrate-forming conditions of a Qatari natural gas-type mixture, QNG-S1, obtained using two different experimental methods, namely, a benchtop reactor and a gas hydrate autoclave. ... -
Experimental and DFT/TD-DFT computational investigations of the solvent effect on the spectral properties of nitro substituted pyridino[3,4-c]coumarins
( Elsevier , 2020 , Article)The UV/Vis absorption characteristics of newly synthesized pyridino[3,4-c] coumarins in different neat solvents were investigated experimentally and computationally. It is noted that the nitro-substituted pyridocoumarins ... -
Experimental and modeling analysis of p-type Bi0.4Sb1.6Te3 and graphene nanocomposites
( Elsevier , 2022 , Article)The state-of-the-art Bismuth-Telluride (Bi2Te3) based systems are promising thermoelectric materials for efficient thermoelectric applications. In this study, the effect of graphene nanosheets (GNS) integrity on thermoelectric ... -
Experimental And Modeling Of Friables And Stone Oil Reservoirs Consolidation Using Steel Making Slag
( Qatar University , 2001 , Article)A mathematical model was developed simulating the process of sand production in under downhole stress state. The model was derived based on Mohr-Colomb failure criterion, Darcy equation for radial flow and reservoir stress ... -
Experimental and numerical analysis of heat transfer and fluid flow characteristics inside pulsating heat pipe
( Taylor and Francis Ltd. , 2021 , Article)Heat pipes are a popular choice for many industries and research applications to extract heat effectively by maintaining desired device/location at almost isothermal conditions. Pulsating heat pipes, also known as wickless ... -
Experimental and numerical investigation of damping in a hybrid automotive damper combining viscous and multiple-impact mechanisms
( SAGE , 2022 , Article)One of the least investigated approaches in passive vibration control is the possibility of combining different types of dampers that use different damping principles. Such a combination process, if wisely designed and ... -
An experimental and numerical investigation of the effects of the diaphragm pressure ratio and its position on a heated shock tube performance
( Wiley-Blackwell , 2022 , Article)The main purpose of this work was to investigate the performance of heated shock tube (ST) with different pressure ratios and diaphragm positions numerically and experimentally. The numerical model was developed to simulate ... -
Experimental and numerical investigation on soft tissue dynamic response due to turbulence-induced arterial vibration.
( Springer Verlag , 2019 , Article)Peripheral arterial occlusive disease is a serious cardiovascular disorder. The arterial occlusion leads to turbulent flow and arterial sound generation on the inner vessel wall. Stenosis-induced vibro-acoustic waves ... -
Experimental and numerical investigations on axial crushing of square cross-sections tube with vertical wave
( Techno-Press , 2020 , Article)In this paper, wavy square absorbers were experimentally and numerically investigated. Numerical simulations were performed with LS-Dyna software on 36 wavy absorbers and their crushing properties were extracted and compared ... -
Experimental and Theoretical Investigation on Bond Behavior of Tensile Lap Spliced Basalt Fiber Reinforced Polymer Bars in High Strength Concrete Beams
(2020 , Master Thesis)Basalt fiber reinforced polymer (BFRP) reinforcements are a possible replacement for corroding conventional steel bars. BFRP bars tension lap splices are necessary due to construction stoppages and limitations on rebar ... -
Experimental and theoretical investigations of the effect of bis-phenylurea-based aliphatic amine derivative as an efficient green corrosion inhibitor for carbon steel in HCl solution
( Elsevier , 2023 , Article)A novel bis-phenylurea-based aliphatic amine (BPUA) was prepared via a facile synthetic route, and evaluated as a potential green organic corrosion inhibitor for carbon steel in 1.0 M HCl solutions. NMR spectroscopy ... -
Experimental and theoretical studies on axially crushed corrugated metal tubes
( Elsevier Ltd , 2018 , Article)In this paper, crushing behaviors of tube with shallow and deep corrugation are experimentally and theoretically examined under axial loading condition. Three types of specimens were tested under quasi static axial loading. ... -
Experimental and theoretical studies on the mechanical and structural changes imposed by the variation of clay loading on poly(vinyl alcohol)/cloisite 93A nanocomposites
( John Wiley and Sons Ltd , 2019 , Article)Polymer nanocomposites (PNC) structures are promising materials due to their novel properties. However, many of their characteristic physical, mechanical, and chemical behavior have not been quantified. Depending on the ... -
Experimental and water quality analysis of solar stills with vertical and inclined fins
( Elsevier B.V. , 2020 , Article)The main aim of the present work is to see the effect of vertical and inclined fins on the yield of solar still. Three same size solar stills have been used to carry out research work in climate conditions of Gandhinagar, ...