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Now showing items 24868-24887 of 49774
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The role of type II FB (I):Tl+ defect in laser light generation and color image formation at the low coordination surface sites of AgBr: Ab initio calculations
( Elsevier , 2006 , Article)The role of type II FB (I):Tl+ color center at low coordination surface sites of AgBr thin films in providing tunable laser activity and photographic sensitization is examined. The double-well potential at this site is ... -
The role of α2-adrenergic receptors in hypertensive preeclampsia: A hypothesis
( Wiley Blackwell , 2019 , Article Review)Preeclampsia, a major disorder of human pregnancy, manifests as persistent hypertension and proteinuria presenting after 20 weeks of pregnancy. Multiple systemic symptoms might be associated with preeclampsia including ... -
The Schottky-Klein prime function: A theoretical and computational tool for applications
( Oxford University Press , 2016 , Article)This article surveys the important role, in a variety of applied mathematical contexts, played by the socalled Schottky-Klein (S-K) prime function. While it is a classical special function, introduced by 19th century ... -
The SCIDOTS Project: Evidence of benefits of an integrated tobacco cessation intervention in tuberculosis care on treatment outcomes
(2011 , Article)Background: There is substantial evidence to support the association between tuberculosis (TB) and tobacco smoking and that the smoking-related immunological abnormalities in TB are reversible within six weeks of cessation. ... -
The Secure Degrees of Freedom of the MIMO BC and MIMO MAC with Multiple Unknown Eavesdroppers
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)We investigate the secure degrees of freedom (SDoF) of a two-transmitter Gaussian multiple access channel with multiple antennas at the transmitters, a legitimate receiver and an unknown number of eavesdroppers each with ... -
The selection of brise soleil shading optical properties for energy conservation and glare removal: A case study in Qatar
( Elsevier Ltd , 2018 , Article)Energy efficiency in buildings is crucial for the design of sustainable cities, especially in hot climates where demands are high. This study investigates the impact of the shading optical properties on the space energy ... -
The Separation of Emulsified Water/Oil Mixtures through Adsorption on Plasma-Treated Polyethylene Powder
( Qatar University Press , 2021 , Poster)This work addresses the preparation and characterization of efficient adsorbents for tertiary treatment (oil content below 100 ppm) of oil/water emulsions. Powdered low-density polyethylene (LDPE) was modified by radio-frequency ... -
The separation of emulsified water/oil mixtures through adsorption on plasma-treated polyethylene powder
( MDPI AG , 2021 , Article)This paper addresses the preparation and characterization of efficient adsorbents for tertiary treatment (oil content below 100 ppm) of oil/water emulsions. Powdered low-density polyethylene (LDPE) was modified by ... -
The separation of oil/water mixtures by modified melamine and polyurethane foams: A review
( MDPI , 2021 , Article Review)Melamine (MA) and polyurethane (PU) foams, including both commercial sponges for daily use as well as newly synthesized foams are known for their high sorption ability of both polar and unipolar liquids. From this reason, ... -
The siege of Qatar: Creating a batna that strengthened the tiny country's negotiating power
( Nova Science Publishers, Inc. , 2019 , Book chapter)On June 5, 2017, Qatari citizens and residents woke to the news that four nearby countries - the Kingdom of Saudi Arabia, United Arab Emirates, Bahrain, and Egypt - had severed diplomatic ties with Qatar and closed certain ... -
The significance of industry experience in civil engineering education
( Hamad bin Khalifa University Press (HBKU Press) , 2013 , Conference Paper)Students pursuing their civil engineering degree usually learn the theory part in class but may struggle relating theory to practice if the instructor have no industry experience. Engineering graduates can benefit more ... -
The similarity-aware relational intersect database operator
( Springer International Publishing , 2014 , Conference Paper)Identifying similarities in large datasets is an essential operation in many applications such as bioinformatics, pattern recognition, and data integration. To make the underlying database system similarity-aware, the core ... -
The simultaneous estimation of credit growth, valuation, and stability of the Gulf Cooperation Council banking industry
( Elsevier , 2016 , Article)We use a simultaneous equations model to study the relationship between bank stability, performance and credit growth for 59 GCC banks over the period 2004-2012. To derive our results, we use a dynamic panel estimation ... -
The simultaneous impact of EV charging and PV inverter reactive power on the hosting distribution system's performance: A case study in kuwait
( MDPI AG , 2020 , Article)Recently, electric vehicles (EVs) have become an increasingly important topic in the field of sustainable transportation research, alongside distributed generation, reactive power compensation, charging optimization, and ... -
The size and performance of offshore produced water oil-removal technologies for reinjection
( Elsevier , 2014 , Article)Produced water (PW) is wastewater generated from oil exploration, and requires treating for oil and suspended solids removal. The viability of an effluent treatment unit process for this duty is dependent both on its ... -
The skills and knowledge needed for principals in Qatar’s independent schools: policy makers’, principals’ and teachers’ perspectives
( Routledge , 2019 , Article)Research indicates that principals play a significant role in schools influencing student achievement and teacher effectiveness. This is particularly true in times of educational reform. Qatar has been engaging in a ... -
The small Gulf States: Foreign and security policies before and after the Arab spring
( Taylor and Francis , 2016 , Book)Small states are often believed to have been resigned to the margins of international politics. However, the recent increase in the number of small states has increased their influence and forced the international community ... -
The solvatochromic, spectral, and geometrical properties of nifenazone: A DFT/TD-DFT and experimental study
( Royal Society of Chemistry , 2014 , Article)The solvatochromic, spectral, and geometrical properties of nifenazone (NIF), a pyrazole-nicotinamide drug, were experimentally and computationally investigated in several neat solvents and in hydro-organic binary systems ... -
The Spacing Effect and its Relevance to Second Language Acquisition
( Oxford University Press , 2017 , Article Review)This commentary discusses some theoretical and methodological issues related to research on the spacing effect in second language acquisition research (SLA). There has been a growing interest in SLA in how the temporal ... -
The spectral and morphological studies of the conductive polyaniline thin film derivatives by the in situ copolymerization
( Springer New York LLC , 2017 , Article)Thin film of copolymers of poly(aniline-co-2-iodoaniline) are obtained by in situ copolymerization of aniline and 2-iodoaniline as the startup monomers by chemical oxidation upon varying the molar feed to ratio of monomers ...