Browsing College of Arts & Sciences by Title
Now showing items 2341-2360 of 3403
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Production Of Size-selected Copper Nanoclusters For Petroleum Refinery Applications
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)Atomic nanoclusters exhibit large surface to volume ratio which enhances their ability to interact with external materials, thus, they can be utilized efficiently for catalysts and gas sensing applications. Copper (Cu) ... -
Production, purification, and characterization of thermostable alkaline xylanase from Anoxybacillus kamchatkensis NASTPD13
( Frontiers Media S.A. , 2018 , Article)Anoxybacillus kamchatkensis NASTPD13 used herein as a source for thermostable alkaline xylanase were isolated from Paudwar Hot Springs, Nepal. NASTPD13 cultured at 60°C, pH 7 and in presence of inorganic (ammonium sulfate) ... -
Profile of Mental and Behavioral Disorders Among Preschoolers in a Tertiary Care Hospital in Oman: A Retrospective Study
( Oman Medical Specialty Board , 2016 , Article)Objectives Early diagnosis and prompt treatment of mental and behavioral disorders in preschoolers is critical for a better prognosis, ultimately leading to improved quality of life for both the child and the family. ... -
Progress in smartphone-enabled aptasensors
( Elsevier , 2022 , Article)Despite their high analytical performance, conventional analytical biosensor devices are usually difficult to handle, time-consuming, bulky and expensive. As a result, their applications remain restricted to resource-limited ... -
The progression of Qatar's natural gas industry and its role in global energy market
( Royal Geographical Society , 2011 , Conference Paper)Qatar is the third largest country in the world in natural gas reserves with almost 900 trillion cubic feet. Since the mid of 1980s, after deep studies of the general prospect, Qatar has started to develop its largest field ... -
Progressive circuit resistance training improves inflammatory biomarkers and insulin resistance in obese men
( Elsevier Inc. , 2019 , Article)Circuit resistance training (CRT) is a time-efficient exercise modality for improving skeletal muscle and cardiovascular fitness. But the beneficial role of CRT in obese individuals is still not well understood. This study ... -
Promising And Anomalous Structural And Electrochemical Properties Of Polyanionic Phosphates In Sodium Ion Batteries
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)This work presents a recent progress on the polyanionic phosphate family that functions as cathode materials in sodium ion batteries (SIBs). Firstly, this study will cover vanadium-containing frameworks that show very ... -
Promising aqueous dispersions of carbon black for semisolid flow battery application
( Elsevier B.V. , 2022 , Article)In this systematic study, we attempt to thoroughly understand the aggregation mechanism of conductive carbon black in aqueous dispersing medium and optimize the formulation of suspension electrodes for aqueous sodium–ion ... -
Promising aqueous dispersions of carbon black for semisolid flow battery application
( Elsevier , 2022 , Article)In this systematic study, we attempt to thoroughly understand the aggregation mechanism of conductive carbon black in aqueous dispersing medium and optimize the formulation of suspension electrodes for aqueous sodium–ion ... -
Promoter–enhancer looping at the PPARγ2 locus during adipogenic differentiation requires the Prmt5 methyltransferase
( Oxford University Press , 2016 , Article)PPARγ2 is a critical lineage-determining transcription factor that is essential for adipogenic differentiation. Here we report characterization of the three-dimensional structure of the PPARγ2 locus after the onset of ... -
Promoting Learning Outcomes Assessment in Higher Education : Factors of Success
( Penn State University Press , 2013 , Article)This article presents results of a study on factors that contribute to successful learning outcomes assessment practices. This qualitative study uses the case study method to analyze factors of success in higher education ... -
Promoting sustainable businesses for strong local communities: Qatar's wild herbal plants industry
( Elsevier , 2020 , Article)Herbal medicine can improve economic diversification and sustainable livelihoods of local communities. In fact, the demand for herbal medicine is increasing globally while policymakers also value non-economic benefits, ... -
Properties of a three-dimensionally ordered macro-mesoporous carbon-doped TiO2 composite catalyst
( World Scientific Publishing , 2013 , Article)This study aimed to develop an effective, environmentally benign composite catalyst composed of carbon materials and titanium dioxide (TiO2). Carbon-doped titanium dioxide (C-TiO2) was prepared by coating TiO2 onto ... -
Properties of nanoclay PVA composites materials
( Hamad bin Khalifa University Press (HBKU Press) , 2013 , Article)Polyvinyl alcohol (PVA)/Na-rich Montmorillonite (MMT) nanocomposites were prepared using solution method to create polymer-clay nanocomposite (PCN) material. The PCN material was studied using X-ray diffraction (XRD), ... -
Proposing a Nondestructive and Intelligent System for Simultaneous Determining Flow Regime and Void Fraction Percentage of Gas-Liquid Two Phase Flows Using Polychromatic X-Ray Transmission Spectra
( Springer , 2021 , Article)Two phase flows are of particular importance in various research fields. In the current article, a novel system consists of an X-ray tube and one sodium iodide crystal detector with ability of determining type of flow ... -
Protection from previous natural infection compared with mRNA vaccination against SARS-CoV-2 infection and severe COVID-19 in Qatar: a retrospective cohort study
( Elsevier , 2022 , Article)BackgroundUnderstanding protection conferred by natural SARS-CoV-2 infection versus COVID-19 vaccination is important for informing vaccine mandate decisions. We compared protection conferred by natural infection versus ... -
Protection of Omicron sub-lineage infection against reinfection with another Omicron sub-lineage
( Nature Research , 2022 , Article)There is significant genetic distance between SARS-CoV-2 Omicron (B.1.1.529) variant BA.1 and BA.2 sub-lineages. This study investigates immune protection of infection with one sub-lineage against reinfection with the other ... -
Protective effects of ethyl acetate fraction of Lawsonia inermis fruits extract against carbon tetrachloride-induced oxidative damage in rat liver
( SAGE Publications , 2013 , Article)This study aimed to investigate the antioxidant properties of different fractions obtained from the fruits of Lawsonia inermis, a widely used medicinal plant, against carbon tetrachloride (CCl4)-induced oxidative stress ... -
Protein arginine methyltransferase 5 (PRMT5) promotes survival of lymphoma cells via activation of WNT/B-catenin and AKT/GSK3B proliferative signaling
( American Society for Biochemistry and Molecular Biology Inc. , 2019 , Article)Epigenetic regulation by the type II protein arginine methyltransferase, PRMT5, plays an essential role in the control of cancer cell proliferation and tumorigenesis. In this report, we investigate the relationship between ... -
Proteomic analysis of T. qataranse exposed to lead (Pb) stress reveal new proteins with potential roles in Pb tolerance and detoxification mechanism
( Frontiers Media , 2022 , Article)Soil lead (Pb) contamination is one of the environmental problems facing the modern world. Sources of Pb in soil include industrial activities such as mining and smelting processes, agricultural activities such as application ...