Browsing Qatar University Institutional Repository by Title
Now showing items 19727-19746 of 27002
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Study of device instability of bottom-gate ZnO transistors with sol-gel derived channel layers
( American Institute of Physics Inc. , 2017 , Article)In this paper, the authors report the device instability of solution based ZnO thin film transistors by studying the time-evolution of electrical characteristics during electrical stressing and subsequent relaxation. A ... -
Study of diesel-biodiesel blends combustion and emission characteristics in a CI engine by adding nanoparticles of Mn (II) supramolecular complex
( Elsevier B.V. , 2020 , Article)The supramolecular complex (SC1) [Mn(EIN)4(NCS)2] was synthesized and characterized as a new nanosized emulsion additive to improve the fuel incineration and emission formation behavior of a diesel-biodiesel blends-fueled ... -
Study of ethanol decomposition mechanism over combustion synthesized bimetallic Cu-Co nanoparticles
( AIChE , 2018 , Conference Paper)[No abstract available] -
Study of ethanol decomposition mechanism over combustion synthesized bimetallic Cu-Co nanoparticles
( AIChE , 2018 , Conference Paper)[No abstract available] -
Study of ethanol dehydrogenation reaction mechanism for hydrogen production on combustion synthesized cobalt catalyst
( Elsevier Ltd , 2017 , Article)Cobalt nanoparticles synthesized via solution combustion synthesis were used to study the decomposition mechanism of ethanol for hydrogen production. Thermodynamic studies were conducted on the synthesis of cobalt nanoparticles ... -
Study of Flexible Working Arrangements in context of Covid-19 in Qatar
(2021 , Professional Masters Project)Digitalization and social networks have impacted the way people communicate, collaborate and work. Employees are starting to take greater control and autonomy over their working hours. Experts suggest that flexible work ... -
Study of In Vitro Biodegradation Behavior of Mg–2.5Zn–xES Composite
( Springer , 2020 , Conference Paper)In this study, zinc (Zn) and eggshell (ES) reinforced biodegradable magnesium alloy (Mg–2.5Zn) and environment concise (eco) composite (Mg–2.5Zn–xES) was fabricated using disintegrated melt deposition (DMD) technique. In ... -
Study of Intrapreneurship in Qatar: An Empirical Study and Structural Model
(2019 , Professional Masters Project)Intrapreneurship has provided great opportunities for organizations that have practiced it in different countries. Intrapreneurship is a process by which employees within an organization take the lead in producing new ... -
Study of Magnetic Properties and Lattice Dynamics of the Cdx Co1-x Ferrite System by MossbauerEffect
( Qatar University , 1981 , Article)The magnetic properties and lattice dynamics of the spinel ferrite system Cdx Coi-x Fe^ 04 (x = 0.0, 0.1, . . . , and 1.) were studied in the temperature range between 78 to 800°K. The results showed that the samples with ... -
Study of microbial communities and environmental parameters of seawater collected from three Tunisian fishing harbors in Kerkennah Islands: Statistical analysis of the temporal and spatial dynamics
( Elsevier Ltd , 2022 , Article)Surface seawater, collected from three fishing harbors during different seasons of the years 2015, 2016 and 2017, were assessed for physico-chemical analyses. Results showed that seawater was mainly polluted by hydrocarbons ... -
Study of microstructural and mechanical properties of al/sic/tio2 hybrid nanocomposites developed by microwave sintering
( MDPI , 2021 , Article)Aluminum hybrid metal matrix nanocomposites (Al/SiC/TiO2) were synthesized through a microwave-assisted powder metallurgy process, and their evolved microstructure and mechanical properties were investigated. The Al/SiC/TiO2 ... -
Study of mild steel sandwich structure energy absorption performance subjected to localized impulsive loading
( MDPI AG , 2020 , Article)Extensive research focus had been given to sacrificial sandwich panels to mitigate the effects of blast loads. This is due to their ability to distribute the load and absorb a significant portion of the blast energy. This ... -
Study of Nature Inspired Power-aware Wake-Up Scheduling Mechanisms in WSN
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)The Internet of Things (IoT) has the potentialities to advance the concretisation of the smart world through a wide interaction between the human society with its physical environment. This interaction is enabled by Wireless ... -
A study of nutrient dynamics in the coastal dunes of northwestern egypt.
( Qatar University , 1990 , Article)Biomass and nutrient cycling are evaluated in sites of Ammophita arenaria and Onoaisvaginalis which are among the most common species growing on the coastal dunes of the western desert of Egypt. Both species accumulate N ... -
Study of performance, combustion, and emissions parameters of DI-diesel engine fueled with algae biodiesel/diesel/n-pentane blends
( Elsevier Ltd , 2021 , Article)Biodiesel extracted from Scenedesmus obliquus algae through transesterification was used in the current study. Due to the disadvantages of using pure biodiesel in engines, it was used as B50 (a blend of 50% diesel and 50% ... -
Study of polyaniline-silver nanocomposite as humidity sensor
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Study of polyaniline-silver nanocomposite as humidity sensor J. Bhadra, A. Popelka, N. J. Al-Thani, A. Abdulkareem Center for Advanced Materials, Qatar University, Qatar Abstract In this piece of work focus on fabrication ... -
Study Of Reaction Kinetics Of Co2 With Aqueous Solutions Glycine , L-Arginine And Their Mdea Blends Using Stopped-Flow Technique
(2018 , Professional Masters Project)Global warming and its harmful implications is a major concern for the government and scientific community worldwide. CO2 being a greenhouse gas is considered to be a major contributor to the global warming. To reduce ... -
Study of reaction mechanism in solution combustion synthesis of transition metals
( AIChE , 2015 , Conference Paper)In this paper, we investigate the reaction mechanism followed during the solution combustion synthesis of transition metals (Cu, Ni and Co) and their alloys. Metal nitrates were mixed with a choice of fuel (glycine, and ... -
Study of recirculating water-based and carbon-based working fluids on the combustion flow field and the cycle performances of semi-closed CO2-capturing Brayton-derived cycles
( Elsevier , 2022 , Article)The transition into new power technologies that utilize fossil fuels with near zero emissions to the ambient is an urgent need to mitigate the worldwide environmental problems. In this study, detailed analyses of carbon-based ... -
A Study Of Student's Independent Thinking As Manifested In Real Achievement Situation
( Qatar University , 1998 , Article)The major aim of the paper is to examine to what extent expectancy as an expression of perceived ability is related to amount of independent thinking as manifested in the examination situation, and to what extent the latter ...