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السجلات المعروضة 4390 -- 4409 من 4769
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Vanadium Carbide (V4C3) MXene as an Efficient Anode for Li-Ion and Na-Ion Batteries
( MDPI , 2022 , Article)Li-ion batteries (LIBs) and Na-ion batteries (SIBs) are deemed green and efficient electrochemical energy storage and generation devices; meanwhile, acquiring a competent anode remains a serious challenge. Herein, the ... -
Vapor sensing performances of PVDF nanocomposites containing titanium dioxide nanotubes decorated multi-walled carbon nanotubes
( Springer New York LLC , 2018 , Article)Inorganic nanocarbon hybrid materials are good alternatives for superior electrochemical performance and specific capacitance to their traditional counterparts. Nanocarbons act as a good template for the growth of metal ... -
Vapour-Phase Selective Hydrogenation of γ-Valerolactone to 2-Methyltetrahydrofuran Biofuel over Silica-Supported Copper Catalysts
( MDPI , 2022 , Article)2-Methyltetrahydrofuran (MTHF) is a desirable biomass-based platform chemical with excellent potential as an ideal biofuel, green solvent, and raw material for synthesizing downstream chemicals. In this work, a series of ... -
Variability of blue carbon storage in arid evaporitic environment of two coastal Sabkhas or mudflats
( Nature Research , 2023 , Article)Coastal Sabkhas are mudflats found in arid coastal regions that are located within the supratidal zone when high rates of evaporation lead to high salinity. While evaporitic minerals often accumulate underneath the surface, ... -
Variability of Physical and Biogeochemical Parameters in the Exclusive Economic Zone of Qatar
( Qatar University Press , 2021 , Poster)The oceanographic data collected along a transect in the Exclusive Economic Zone (EEZ) of Qatar during late summer (September 2014) and winter (January 2015) have been analyzed to investigate the spatial and temporal ... -
Variable Message Sign strategies for Congestion Warning on Motorways
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Introduction Motorways are the safest roads by design and regulation. Still, motorways in the European Union accounted for nearly 27,500 fatalities from 2004 to 2013 (Adminaite, Allsop, & Jost, 2015). The likelihood ... -
Variable message sign strategies for congestion warning on motorways - A driving simulator study
( Gioacchino Onorati Editore , 2018 , Article)Congestion and stopped traffic on motorways constitute a potential safety hazard for drivers. In particular, unexpected hard congestion tails are the causes of serious rear-end crashes as they compromise the drivers' ability ... -
Variation in temperature and light but not salinity invokes antioxidant enzyme activities in germinating seeds of Salsola drummondii
( Taylor and Francis Ltd. , 2016 , Article)Seeds with efficient antioxidant defence system show higher germination under stress conditions; however, such information is limited for the halophyte seeds. We therefore studied lipid peroxidation and antioxidant responses ... -
Variation of soil properties with sampling depth in two different light-textured soils after repeated applications of urban sewage sludge
( Elsevier , 2021 , Article)Semi-arid agricultural soils have increasingly been subjected to urban sewage sludge (USS) applications due to accelerated soil depletion and shortages in manure supply. Research studies addressing USS reuse have mostly ... -
Variations in respiratory syncytial virus activity following the relaxation of COVID-19 restrictions in Qatar.
( Oxford University Press , 2022 , Article)Despite the relaxation of COVID-19 restrictions in Qatar in October-December 2020, the detection of RSV was reduced ∼25-fold compared with 2019. This dramatic decrease during the typical RSV season could be related to ... -
Various techniques to enhance distillate output of tubular solar still: A review
( Elsevier B.V. , 2019 , Article Review)The necessity of freshwater is rising due to the expanding residents as well as fast urbanization. Besides, concerning the drinking purpose, clean water represents a very crucial role in several applications like batteries, ... -
Vegetation responses to 26 years of warming at Latnjajaure Field Station, northern Sweden
( NRC Research Press , 2021 , Article)Climate change is rapidly warming high latitude and high elevation regions influencing plant community composition. Changes in vegetation composition have motivated the coordination of ecological monitoring networks across ... -
VEGF-121 plasma level as biomarker for response to anti-angiogenetic therapy in recurrent glioblastoma.
( BioMed Central , 2018 , Article)Vascular endothelial growth factor (VEGF) isoforms, particularly the diffusible VEGF-121, could play a major role in the response of recurrent glioblastoma (GB) to anti-angiogenetic treatment with bevacizumab. We hypothesized ... -
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, ... -
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 ... -
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 ... -
Vibration sensing systems based on poly(Vinylidene fluoride) and microwave-assisted synthesized zno star-like particles with controllable structural and physical properties
( MDPI AG , 2020 , Article)This study deals with the effect of zinc oxide (ZnO) star-like filler addition to the poly(vinylidene fluoride) (PVDF) matrix, and its effect on the structural and physical properties and consequences to the vibration ... -
Views of the Gulf Cooperation Council among Qatari and Other Gulf Nationals
( The Social and Economic Survey Research Institute, Qatar University , 2016 , Report)Here we examine the orientations of Qatari citizens toward the Gulf Cooperation Council (GCC) as revealed in a pan-GCC survey conducted in 2016. We assess general attitudes toward the Council as an institution, toward ... -
Violence against women in Qatari Society
( Duke University Press , 2009 , Article)This study is the first of its kind using field and documentary research sources. While official sources on the subject have proven the limitations of such data, the study uses a field survey of a sample of 2,787 women ...
