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Now showing items 26655-26674 of 50385
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Ventifacts distribution in Qatar
( John Wiley & Sons, Ltd , 1985 , Article)This study attempts to investigate the distribution of ventifacts in Qatar. It is believed that ventifacts are confined to the areas within about 5 km of the Miocene or Mio-Pliocene Hofuf formations and the spreads of ... -
Ventilator-associated pneumonia diagnosis: electrochemical sensors for rapid and sensitive detection of pyocyanin
( Springer Nature , 2024 , Article)Ventilator-associated pneumonia (VAP) is a severe condition in critically ill patients that requires timely diagnosis to improve patient outcomes. In this study, we developed an electrochemical sensor for pyocyanin detection ... -
Venture capital and intellectual property rights effects on innovation in different socio-economic environments: A systematic review and exploration of various contradictive studies
( Inderscience Publishers , 2018 , Article)Academic literature has well discussed the effects of venture capital investment, intellectual property rights and other socio-economic parameters on business innovation. While many scholars emphasise these positive effects, ... -
Verification of ACI- 549 Code for Flexural Strengthening of Reinforced Concrete Beams Using FRCM
( Qatar Univesrity Press , 2020 , Conference Paper)This paper presents an analytical study to verify the ACI 549-4R-16 code for experimentally tested Reinforced Concrete (RC) beams, which were strengthened to enhance the flexural capacity using Fiber-Reinforced Cementitious ... -
Verifying cloud service-level agreement by a third-party auditor
( John Wiley & Sons, Ltd. , 2014 , Article)In this paper, we study the important issue of verifying service-level agreement (SLA) with an untrusted cloud and present an SLA verification framework that utilizes a third-party auditor (TPA). A cloud provides users ... -
Versatile Bifunctional and Supported IrNi Oxide Catalyst for Photoelectrochemical Water Splitting
( MDPI , 2022 , Article)Designing a high-performance electrocatalyst that operates with photon-level energy is of the utmost importance in order to address the world’s urgent energy concerns. Herein, we report IrNi nanoparticles uniformly distributed ... -
Versatile synthesis of dendritic mesoporous rare earth–based nanoparticles
( American Association for the Advancement of Science , 2022 , Article)Rare earth–based nanomaterials that have abundant optical, magnetic, and catalytic characteristics have many applications. The controllable introduction of mesoporous channels can further enhance its performance, such as ... -
Versatile synthesis of Pd and Cu Co-doped porous carbon nitride nanowires for catalytic CO oxidation reaction
( MDPI AG , 2018 , Article)Developing efficient catalyst for CO oxidation at low-temperature is crucial in various industrial and environmental remediation applications. Herein, we present a versatile approach for controlled synthesis of carbon ... -
Vertical and seasonal variations in biofilm formation on plastic substrates in coastal waters of the Black Sea
( Elsevier , 2023 , Article)Plastic contamination of the marine environment is an increasing concern worldwide. Therefore, it is important to understand the kinetics of biofilms on plastics to study their behavior, fate, and transport pathways in the ... -
Vertical Distribution And Inter-Relations Of Oxygen And Nutrients In The Arabian Gulf And The Gulf Of Oman In Summer
( Qatar University , 1990 , Article)The distribution patterns of oxygen and nutrients (phosphate, nitrate, nitrite and ammonia) were studied along the Arabian shelf of the Arabian Gulf and the Gulf of Oman, including the Strait of Hormuz, during September, ... -
Vertical distribution and radiological risk assessment of 137Cs and natural radionuclides in soil samples
( Nature Publishing Group , 2019 , Article)The aims of this study were to investigate the vertical distributions of natural radionuclides 232Th, 226Ra and 40K as well as anthropogenic radionuclide 137Cs in soil samples and to analyze the correlation among the ... -
Vertical orientation of solvent cast nanofilled PS-b-PEO block copolymer thin films at high nanoparticle loading
( Elsevier Ltd , 2016 , Article)We demonstrate selective dispersion of photosensitive electron acceptor phenyl-C61-butyric acid methyl ester (PCBM) in cylinder forming polystyrene-b-poly (ethylene oxide) (PS-b-PEO) block copolymer (BCP). Neat PS-b-PEO ... -
Vertical silicon nanowire-based racetrack resonator optical sensor
( Springer Verlag , 2019 , Article)We propose a highly sensitive optical sensor which is built from silicon nanowires. The silicon nanowires are arranged to form a ring resonator. The silicon nanowires cladding and voids are filled with the analyte. The ... -
Vertical Silicon Nanowires Based Directional Coupler Optical Router
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)A fully complementary metal-oxide-semiconductor compatible optical router is demonstrated. The router structure is built using the silicon-organic hybrid platform, while its mechanism is based on the directional coupler ... -
Vertical zonation and functional diversity of fish assemblages revealed by ROV videos at oil platforms in The Gulf
( Blackwell Publishing Ltd , 2017 , Article)An assessment of vertical distribution, diel migration, taxonomic and functional diversity of fishes was carried out at offshore platforms in The (Arabian-Iranian-Persian) Gulf. Video footage was recorded at the Al Shaheen ... -
Vertical zonation and functional diversity of fish assemblages revealed by ROV videos at oil platforms in The Gulf
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)About one third of the oil and gas extracted worldwide comes from offshore sources. There is currently thousands of large-scale oil and gas platforms spread across the seas and coastal oceans, from the North Sea to the ... -
Vertically oriented nanoporous block copolymer membranes for oil/water separation and filtration
( Royal Society of Chemistry , 2020 , Article)The separation of oil from water and filtration of aqueous solutions and dispersions are critical issues in the processing of waste and contaminated water treatment. Membrane-based technology has been proven as an effective ... -
Verum- versus Sham-Acupuncture on Alzheimer’s Disease (AD) in Animal Models: A Preclinical Systematic Review and Meta-Analysis
( hindawi , 2020 , Article)Background. Alzheimer’s disease (AD) is a common health condition affecting senile people and leads to severe cognitive dysfunctions. Acupuncture has been shown to be a possible alternative natural remedy for AD in some ...
