Qatar University Institutional Repository: Recent submissions
Now showing items 1581-1600 of 31969
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Reduced Switch Count Based Single Source 7L Boost Inverter Topology
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)The new inverter topologies based on switched capacitor concept with voltage boosting ability are attractive for the low voltage applications. Such low voltage requirements allow a single-stage dc-ac power conversion, ... -
تأصيل الهوية البصرية للطب العربي: دلالات رمزية
( دار نشر جامعة قطر , 2024 , Article)يُعد الطب العربي أحد أقدم المدارس الطبية التي جمعت تجارب الأمم الطبية في العالم القديم. ورغم تجذّره في ثقافة الشعوب العربية وتوصيات منظمتي الصحة العالمية واليونسكو بضرورة حماية معارف الشعوب الطبية والتراث الثقافي غير المادي ... -
New pyrazole derivatives as effective corrosion inhibitors on steel-electrolyte interface in 1 M HCl: Electrochemical, surface morphological (SEM) and computational analysis
( Elsevier , 2020 , Article)Corrosion inhibition is a vast area of research and its development is attracting increasing attention from researchers. Given the different biological activities that present these compounds, in the present work, we ... -
The Goldilocks view: Support and skepticism of the impacts and pace of unconventional oil and gas development in the Bakken Shale of the United States
( Elsevier , 2020 , Article)Residents of rural communities with histories of booms and busts in natural resource extraction often have divergent and simultaneously complex views on whether continued development of such industries is desirable. For ... -
Metal telluride nanotubes: Synthesis, and applications
( Elsevier , 2020 , Article)Metal tellurides have been explored extensively just like their sulfide and selenide cousins due to their surface chemistry, quantum confinement and physical properties. Nanotubular metal tellurides are more promising in ... -
Analysis of serum glycome by lectin microarrays for prostate cancer patients - a search for aberrant glycoforms
( Springer , 2020 , Article)This is the first work focused on glycoprofiling of whole N- and O- glycome using lectins in an array format applied for analysis of serum samples from healthy individuals, benign prostate hyperplasia (BPH) patients, and ... -
Epidemiology and pathology of oral squamous cell carcinoma in a multi-ethnic population: Retrospective study of 154 cases over 7 years in Qatar
( Elsevier , 2020 , Article)Background: Oral cancer (OC) is a neoplastic process of the oral cavity that has high mortality and significant effects on patients' aesthetics. The majority of OC is oral squamous cell carcinoma (OSCC) and resection remains ... -
Experimental investigation of the three-point bending properties of sandwich beams with polyurethane foam-filled lattice cores
( Elsevier , 2020 , Article)In the present research, the energy absorption and collapse behaviors of a rigid polyurethane foam-filled sandwich beam with expanded metal sheets as core were studied. Three types of steel lattice core, both unfilled and ... -
Analysis of COVID-19 Cases' Spatial Dependence in US Counties Reveals Health Inequalities
( Frontiers Media S.A. , 2020 , Article)On March 13, 2020, the World Health Organization (WHO) declared the 2019 coronavirus disease (COVID-19) caused by the novel coronavirus SARS-CoV2 a pandemic. Since then the virus has infected over 9.1 million individuals ... -
Generalized Littlewood-Paley Functions on Product Spaces
( TUBITAK , 2020 , Article)We are interested in investigating the L p boundedness of the product of generalized Littlewood–Paley functions S (λ) Φ (f) arising from kernels satisfying only size and cancellation conditions. We obtain L p estimates ... -
Supercapacitor performance of porous nickel cobaltite nanosheets
( Nature Research , 2020 , Article)In this work, nickel cobaltite (NiCo2O4) nanosheets with a porous structure were fabricated on nickel foam as a working electrode for supercapacitor applications. The nanosheets were fabricated by electrochemical deposition ... -
First Case Report of Acquired Copper Deficiency Following Revisional Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S) Leading to Severe Pancytopenia with Refractory Anemia
( Springer , 2020 , Article)Copper, a largely available trace element in the human body, is a cofactor in many enzymatic reactions that are vital for the functioning of the hematologic, vascular, skeletal, antioxidant, and neurologic systems [1, 2]. ... -
Switched-capacitor-based boost multilevel inverter topology with higher voltage gain
( Institution of Engineering and Technology , 2020 , Article)This study proposes a new switched-capacitor-based multilevel inverter topology with a single dc voltage source. The proposed topology finds its suitability for renewable energy applications with low voltage. Seven-level ... -
Telepsychiatry in the Arabian Gulf region - Implications beyond the Covid-19 pandemic
( Elsevier , 2020 , Article)Coronavirus Disease 2019 (Covid-19) was declared as a public health emergency by the World Health Organization in March 2020 (WHO Director-General's opening remarks at the media briefing on COVID-19 - 11 March 2020, n.d.). ... -
Author Correction: Metabolic GWAS of elite athletes reveals novel genetically-influenced metabolites associated with athletic performance (Scientific Reports, (2019), 9, 1, (19889), 10.1038/s41598-019-56496-7)
( Nature Research , 2020 , Article)The Acknowledgements section in this Article is incomplete. "This study was funded by Qatar National Research Fund (QNRF), Grant number NPRP7-272-1-041 (MAE, KS, CG and FB). The funders had no role in study design, data ... -
Corrigendum to "Plasmid-mediated colistin resistance encoded by mcr-1 gene in Escherichia coli co-carrying blaCTX-M-15 and blaNDM-1 genes in pediatric patients in Qatar" [J Global Antimicrob Resist 22 (2020) 662-663] (Journal of Global Antimicrobial Resistance (2020) 22 (662-663), (S2213716520301740), (10.1016/j.jgar.2020.06.029))
( Elsevier , 2020 , Article)The authors regret that there was an error in the sequence types of two E. coli samples. The incorrect text previously read: Isolate CP9 belongs to ST115 and phylogenetic group A, which has been commensal and commonly ... -
An experimental and numerical investigation of highly strong and tough epoxy based nanocomposite by addition of MWCNTs: Tensile and mode I fracture tests
( Elsevier , 2020 , Article)The present study investigates, through experimental and numerical approaches, the incorporation effect of different weight concentrations of multi-walled carbon nanotubes (MWCNTs) on the mechanical properties of epoxy. ... -
Facile preparation of tungsten carbide nanoparticles for an efficient oxalic acid sensor via imprinting
( Elsevier , 2020 , Article)Efficient tungsten carbide (W2C) nanoparticles were successfully prepared via a facile chemical reduction method. Structural confirmation studies were performed using spectroscopy and microscopy studies. The drop-casted ... -
Solar syngas production via methanothermal reduction of strontium oxide
( Elsevier , 2020 , Article)A solar methanothermal reduction of strontium oxide for the co-production of Sr and syngas is thermodynamically explored. The data required for the equilibrium and efficiency analysis is taken from a commercial HSC Chemistry ... -
Extensive use of face masks during COVID-19 pandemic: (micro-)plastic pollution and potential health concerns in the Arabian Peninsula
( Elsevier , 2020 , Article)Face masks are primary line of defense to reduce the transmission risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). World Health Organization (WHO) has already updated the guidelines and advised the use ...
