تصفح Academic حسب العنوان
السجلات المعروضة 19751 -- 19770 من 26317
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Stress Detection Using Experience Sampling: A Systematic Mapping Study
( MDPI , 2022 , Article)Stress has been designated the "Health Epidemic of the 21st Century" by the World Health Organization and negatively affects the quality of individuals' lives by detracting most body systems. In today's world, different ... -
Stress Factors as Possible Regulators of Pluripotent Stem Cell Survival and Differentiation
( MDPI , 2023 , Article Review)In recent years, extensive research efforts have been directed toward pluripotent stem cells, primarily due to their remarkable capacity for pluripotency. This unique attribute empowers these cells to undergo self-renewal ... -
Stress Levels and Coping Strategies of Families of Adults With Intellectual Disability and Challenging Behaviours During the COVID-19 Pandemic in Qatar
( SAGE Publications Ltd , 2023 , Article)This study investigated the perceived stress levels and coping strategies of caregivers of adults with intellectual disability and challenging behaviours during the COVID-19 pandemic in Qatar. A cross-sectional survey was ... -
Stretchable Electrospun PVDF-HFP/Co-ZnO Nanofibers as Piezoelectric Nanogenerators
( Nature Publishing Group , 2018 , Article)Herein, we investigate the morphology, structure and piezoelectric performances of neat polyvinylidene fluoride hexafluoropropylene (PVDF-HFP) and PVDF-HFP/Co-ZnO nanofibers, fabricated by electrospinning. An increase in ... -
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 ... -
Striking multiple synergies in novel three-phase fluoropolymer nanocomposites by combining titanium dioxide and graphene oxide as hybrid fillers
( Springer New York LLC , 2017 , Article)In this study, novel three-phase polymer nanocomposites comprising of polyvinylidene fluoride (PVDF), titanium dioxide (TiO2) nanoparticles and graphene oxide (GO) were prepared using colloidal blending. The PVDF/TiO2/GO ... -
Stromal cell-derived factor loaded co-electrospun hydrophilic/hydrophobic bicomponent membranes for wound protection and healing
( Royal Society of Chemistry , 2020 , Article)Chronic wounds are one of the key concerns for people with diabetes, frequently leading to infections and non-healing ulcers, and finally resulting in the amputation of limbs/organs. Stromal cell-derived factor 1 (SDF1) ... -
Strong and Weak n-Homogeneous Spaces
( Qatar University , 2004 , Article)In this paper we introduce new types of n-homogeneity, we call them n-homogeneous of type 2 and type 3, denoted by nH2, nH3 respectively. We show that every 3H3-space is bihomogeneous space. Also, every finite nH3-space ... -
Structural Analysis of G1691S Variant in the Human Filamin B Gene Responsible for Larsen Syndrome: A Comparative Computational Approach
( Wiley Periodicals, Inc , 2017 , Article)Larsen syndrome (LRS) is a rare genetic disease associated with variable manifestations including skeletal malformations, dislocations of the large joints, and notable changes in facial and limb features. Genetic variants ... -
Structural analysis of missense mutations in galactokinase 1 (GALK1) leading to galactosemia type-2.
( Wiley , 2018 , Article)Galactosemia type 2 is an autosomal recessive disorder characterized by the deficiency of galactokinase (GALK) enzyme due to missense mutations in GALK1 gene, which is associated with various manifestations such as hyper ... -
Structural and electrochemical properties of electrodeposited Ni-P nanocomposite coatings containing mixed ceramic oxide particles
( Electrochemical Science Group , 2016 , Article)Mixed oxide ceramic particles were incorporated into Ni-P matrix to synthesize Ni-P-TiO2-CeO2 nanocomposite coatings. In the present study, the effect of concentration of mixed oxide ceramic particles (TiO2 and CeO2) on ... -
Structural and functional properties of rare earth-based (NiO-CGO) nanocomposite produced by effective multiple doping approach via co-precipitation
( Taylor and Francis Ltd. , 2021 , Article)Several metal oxide nanocomposites produced by multiple doping approaches with a combination of rare earth metals tend to show improved performance in various areas such as electrochemical, photocatalytic, and biomedical. ... -
Structural and magnetic properties of Ni1-xZnxFe 2O4 (x=0, 0.5 and 1) nanopowders prepared by sol-gel method
(2013 , Article)A series of nanostructured Ni-Zn ferrites Ni1-xZn xFe2O4 (x=0, 0.5 and 1) with a grain size from 24 to 65 nm have been prepared with a sol-gel method. The effect of composition and sintering temperature on morphology, ... -
Structural and magnetic studies of La2BMnO6 (B=Ni and Co) nanoparticles prepared by microwave sintering approach
( Elsevier Ltd , 2016 , Article)Double perovskite La2BMnO6 (B=Ni and Co) nanoparticles were successfully synthesized by microwave sintering approach (MWS). The crystal structure properties of LBMO nanoparticles were systematically investigated using X-ray ... -
Structural and mechanical characterization of stir cast Al–Al2O3–TiO2 hybrid metal matrix composites
( SAGE Publications Ltd , 2020 , Article)The present paper reports the effect of aluminium oxide and titanium oxide reinforcement on the properties of aluminium matrix. Aluminium matrix reinforced with aluminium oxide?titanium oxide (2.5, 5.0, 7.5 and 10 wt.%) ... -
Structural and mechanical properties of Al-SiC-ZrO2 nanocomposites fabricated by microwave sintering technique
( MDPI AG , 2020 , Article)In the present study, Al-SiC-ZrO2 nanocomposites were developed and characterized. Towards this direction, the aluminum (Al) matrix was reinforced with nano-sized silicon carbide (SiC) and zirconium dioxide (ZrO2), and the ... -
Structural and mechanical properties of microwave sintered Al-Ni50Ti50 composites
( Elsevier B.V. , 2016 , Article)Metal matrix composites (MMCs) have become attractive for structural engineering applications due to their excellent specific strength and are becoming an alternative to the conventional materials particularly in the ... -
Structural and morphological study of mechanochemically synthesized crystalline nanoneedles of Zr-doped carbonated chlorapatite
( Elsevier B.V. , 2015 , Article)Nanosize Zr-doped carbonated chlorapatite (n-ZCCA) was developed as a novel bioceramic by a ball milling process. Results showed that the microstructural characteristics of the product were affected significantly by the ... -
Structural and Thematic Coherence in Qur’ānic Sūrahs (Taswīr ): A New Domain in Qur’ānic inimitability (Sūrat Al-Nisā’ as a model)
( Qatar University Press , 2022 , Article)Objectives: This study seeks to provide evidence for new aspects of the Qur’ānic eternal challenge, so as to offer humanity new insights unto the contemplation (tadabbur) of the structure and the meaning of the Qur’ān ...
