Browsing College of Arts & Sciences by Title
Now showing items 2666-2685 of 3338
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Strategies and Perspectives for UV Resonance Raman Applicability in Clinical Analyses of Human Sperm RNA.
( MDPI , 2021 , Article)Developing a deeper knowledge about the impact of DNA and RNA epigenetic mutations on sperm production and fertilization performance is essential for selecting best quality samples in Assisted Reproductive Technologies ... -
Strategies to Enhance ZnO Photocatalyst's Performance for Water Treatment: A Comprehensive Review
( John Wiley and Sons Inc , 2022 , Article Review)Despite the photocatalytic organic pollutant degradation using ZnO started in 1910?1911, many challenges are still ahead, and several critical issues have to be addressed. Large band gap, and short life-time of photogenerated ... -
Stratigraphy and sedimentology of the Hofuf Formation in the State of Qatar in relation to the tectonic evolution of the East Arabian Block
( Sultan Qaboos University , 2002 , Article)Well-exposed, fine-grained to pebbly coarse-grained fluvial sandstones of Late Miocene to Pleistocene age crop out in the south-central and south-western parts of Qatar. These sandstones belong to the Hofuf Formation and ... -
Stratigraphy, faciès analysis and reservoir characterization of the Upper Jurassic Arab "C", Qatar, Arabian Gulf
( Gebruder Borntraeger Verlagsbuchhandlung , 2011 , Article)The Arab C is a member of the Jurassic Arab Formation, one of the largest carbonate reservoirs in the Arabian Basin. Detailed petrographic analysis of cores and thin sections from selected wells in the onshore Dukhan ... -
Streamlined Mesoporous Silica Nanoparticles with Tunable Curvature from Interfacial Dynamic-Migration Strategy for Nanomotors
( American Chemical Society , 2021 , Article)Streamlined architectures with a low fluid-resistance coefficient have been receiving great attention in various fields. However, it is still a great challenge to synthesize streamlined architecture with tunable surface ... -
Stretchable quaternary phasic PVDF-HFP nanocomposite films containing graphene-titania-SrTiO3 for mechanical energy harvesting
( Springer Nature , 2018 , Article)Integrating efficient energy harvesting materials in to soft, flexible, and eco-friendly substrates could yield significant breakthroughs in wearable and flexible electronics. Substantial advances are emerged in fabricating ... -
Stretching the Spines of Gymnasts: A Review
( Springer International Publishing , 2016 , Article)Gymnastics is noted for involving highly specialized strength, power, agility and flexibility. Flexibility is perhaps the single greatest discriminator of gymnastics from other sports. The extreme ranges of motion achieved ... -
Structural evaluation, preliminary in vitro stability and electrochemical behavior of apatite coatings on Ti6Al4V substrates
( Elsevier Ltd , 2016 , Article)Medical-grade alloys, such as Ti-6Al-4V, have been used for fixation of fractured bone and for the total replacement of defective bone. Their bioactivity could be improved by applying a bone-like apatite layer onto their ... -
Structural influence of chromium substituted magnetite ferrofluids on the optical and antibacterial characteristics
( Elsevier Ltd , 2023 , Article)A series of chromium substituted magnetite (CrxFe1?xFe2O4) ferrofluids with various concentrations ranging from x = 0-0.8 is reported in this work. Simple, cost effective and gentle co-precipitation method is followed for ... -
Structural properties, crystal quality and growth modes of MOCVD-grown AlN with TMAl pretreatment of sapphire substrate
( Institute of Physics Publishing , 2017 , Article)The growth of high quality AlN epitaxial films relies on precise control of the initial growth stages. In this work, we examined the influence of the trimethylaluminum (TMAl) pretreatment of sapphire substrates on the ... -
Structure, nanomechanics, and dynamics of dispersed surfactant-free clay nanocomposite films
( John Wiley and Sons Inc. , 2018 , Article)The current work presents a new approach to achieve high quality dispersion of surfactant-free nanoclay tactoid particles in sub-micron thin films despite the absence of organic modifier. Natural Montmorillonite particles, ... -
Student perspectives on the integration of artificial intelligence into healthcare services
( SAGE Publications Inc. , 2023 , Article)Background: Healthcare workers are often overworked, underfunded, and face many challenges. Integration of artificial intelligence into healthcare service provision can tackle these challenges by relieving burdens on ... -
Students Impression About Using Mobile Phones in Classroom
( Kassel University Press GmbH , 2020 , Article)Mobile phones are widely used by university students and there is a controversial topic whether students should be able to use them freely during lectures. A survey was distributed seeking student opinions on using mobile ... -
Studies on chemistry, spectroscopy and antioxidant activities of chromium(III)-hydrazide complexes
( Bentham Science Publishers B.V. , 2015 , Article)Acid hydrazides are vital chemical entities due to their biological activities. Upon complexation with certain metal ions, their biological activities are known to be positively enhanced. The present work describes the ... -
Studies on metal–organic framework (MOF) nanomedicine preparations of sildenafil for the future treatment of pulmonary arterial hypertension
( nature , 2021 , Article)Pulmonary arterial hypertension (PAH) is an incurable disease, although symptoms are treated with a range of dilator drugs. Despite their clinical benefits, these drugs are limited by systemic side-effects. It is, therefore, ... -
Study of bacterial interactions in reconstituted hydrocarbon-degrading bacterial consortia from a local collection, for the bioremediation of weathered oily-soils
( Elsevier B.V. , 2021 , Article)To enhance the process of bacterial remediation of weathered hydrocarbons, the area of Dukhan, Qatar, was considered as a model for weathering processes. Self-purification by indigenous hydrocarbon-degrading bacteria showed ... -
Study of the Bacillus thuringiensis Vip3Aa16 histopathological effects and determination of its putative binding proteins in the midgut of Spodoptera littoralis
( Elsevier Inc. , 2011 , Article)The bacterium Bacillus thuringiensis produces, at the vegetative stage of its growth, Vip3A proteins with activity against a broad spectrum of lepidopteran insects. The Egyptian cotton leaf worm (Spodoptera littoralis) is ... -
A study of the interlanguage of some Arabic students of English
( Qatar University , 1988 , Article)In this study, the contrastive analysis method is used to investigate the lnterlanguage (IL) developmental sequences of the acquisition of some aspects of English by Arabic-speaking learners. The learners, whose language ... -
Study on ferroelastic characteristics of gamma irradiated lithium potassium sulfate crystal
( Elsevier , 1999 , Article)A detailed study of the optical absorption vs. γ-irradiation dose for lithium potassium sulfate crystal, LiKSO4 cut out perpendicular to x, y and z directions is presented. The optical density was measured within the ... -
A Study on Lebanon’s Competitive Knowledge-Based Economy, Relative Strengths, and Shortcomings
( Springer Nature , 2024 , Article)Lebanon faces several social, political, and economic challenges delaying the efforts to develop a sustainable economy and inclusive society. The advancement of the knowledge economy is critical to the future economic ...