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السجلات المعروضة 4423 -- 4442 من 4774
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Viscoelastic behaviour of Bovine Myocardiam and valvular tissue: Applications in Bio prosthetic heart valve with enhanced properties
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Cardiovascular diseases are among the major causes of morbity and mortality. Particularly, the prevalence of heart valve disease(damaged heart valve leaflet) is one of the most common ailment. In elderly people, every year ... -
Viscosity of Al2O3-water nanofluids
( Elsevier Ltd , 2020 , Conference Paper)In many aspects the past decade has proved the rapid development of water based and oil based nanofluids science. Number of research is conducted to estimate the behavior of these fluids in the different thermal equipments. ... -
Visfatin : An emerging adipocytokine bridging the gap in the evolution of cardiovascular diseases
( Wiley , 2021 , Article)Visfatin/nicotinamide phosphoribosyltransferase (NAMPT) is an adipokine expressed predominately in visceral fat tissues. High circulating levels of visfatin/NAMPT have been implicated in vascular remodeling, vascular ... -
Visible Light Photocatalytic Activity of Ag/WO3 Nanoparticles and its Antibacterial Activity Under Ambient Light and in The Dark
( Elsevier , 2022 , Article)Nanomaterial such as metals and metal oxide photocatalysts have emerged as important tools for removing contaminants from wastewater and as antibacterial agents to prevent infections; this is mainly due to their stability ... -
Visitors off the trail: Impacts on the dominant plant, bryophyte and lichen species in alpine heath vegetation in sub-arctic Sweden
( Elsevier , 2021 , Article)Alpine ecosystems are under increasing pressure due to tourism and recreational activities. When leaving designated trails as is frequently observed, visitors can cause unintentional damage to vegetation. This study ... -
Visualization as a mean of big data management: Using Qatar's electricity consumption data
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)Visualization as a mean of big data management is the new century revolution. Managing data has become a great challenge today, as the amount of raw data size is increasing rapidly. For data like electricity consumption, ... -
Voicing perceptions of local job seekers and employees toward workforce nationalization and employment
( Emerald Publishing , 2023 , Article)Purpose: This study explores local Qatari job seekers' and employees' perceptions of the workforce nationalization strategy to address an inadequacy in the workforce nationalization literature in Gulf Cooperation Council ... -
Volunteers of Oman during the Corona Crisis: An Exploratory Study in the Sociology of Altruism
( Gulf Studies center - College of Arts & Sciences - Qatar University , 2020 , Conference Paper)Volunteering is a major aspect of contemporary globalized societies. It has long been an indicator for proper functioning of society at large. Further, it made notable difference for individuals, groups and organizations. ... -
A Voting-Mechanism-Based Ensemble Framework for Constraint Handling Techniques
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Article)Effective constraint handling techniques (CHTs) are of great significance for evolutionary algorithms (EAs) dealing with constrained optimization problems (COPs). To date, many CHTs, such as penalty function, superiority ... -
Vulnerabilities and countermeasures in electrical substations
( Elsevier , 2021 , Article)The impending and continued threat of cyberattacks on modern utility grids has called for action from the different stakeholders of the electricity sector. This calls for a thorough investigation and review of the weaknesses ... -
Wastewater-based epidemiology for tracking bacterial diversity and antibiotic resistance in COVID-19 isolation hospitals in Qatar
( Elsevier , 2023 , Article)BackgroundHospitals are hotspots for antimicrobial resistance genes (ARGs), and play a significant role in their emergence and spread. Large numbers of ARGs will be ejected from hospitals via wastewater systems. Wastewater-based ... -
Water and carbon footprint reduction potential of renewable energy in the United States: A policy analysis using system dynamics
( Elsevier , 2019 , Article)Renewable energy has gained popularity as an alternative to fossil fuels, which regularly emit large amounts of Greenhouse Gases and consume/withdraw large amounts of water, but renewable energy market penetration is still ... -
Water resources assessment of zayandeh-rood river basin using integrated surface water and groundwater footprints and K-means clustering method
( Elsevier B.V. , 2022 , Article)The lack of an integrated approach to assess the quantity and quality of surface water and groundwater resources undesirably affects their sustainability and errors in users' decisions in the optimal development of basins. ... -
Water, energy and food supply security in the Gulf Cooperation Council (GCC) countries-A risk perspective
( MDPI AG , 2019 , Article Review)Supply systems for water, energy and food in the Gulf region are becoming highly interlinked. In the last decades, interdependence was evident in the increase of coproduction plants and the cross-sectoral resource use ... -
Water-pipe smoking and serum testosterone levels in adult males in Qatar.
( European Publishing , 2019 , Article)Water-pipe (WP) smoking is the most common method of tobacco consumption in the Middle-East and is rapidly spreading on a global scale. Although, water-pipe smoking is linked to various diseases, such as emphysema and ... -
Water-Pipe Smoking Exposure Deregulates a Set of Genes Associated with Human Head and Neck Cancer Development and Prognosis.
( MDPI , 2020 , Article)Water-pipe smoking (WPS) is becoming the most popular form of tobacco use among the youth, especially in the Middle East, replacing cigarettes rapidly and becoming a major risk of tobacco addiction worldwide. Smoke from ... -
Water-pipe smoking promotes epithelial-mesenchymal transition and invasion of human breast cancer cells via ERK1/ERK2 pathways.
( BioMed Central Ltd. , 2018 , Article)With the increasing popularity of water-pipe smoking (WPS), it is critical to comprehend how WPS may affect women's health. The main goal of this study is to identify the potential outcome of WPS on human breast cancer ... -
Water-Repellent Finish on Cotton Fabric by Plasma technique Using Sulfur Hexafluoride SF6
( Qatar University Young Scientists Center - Qatar University , 2024 , Conference Paper)In order to make cotton fabric resistant to water, a radio-frequency plasma system was utilized to treat the fabric with SF6 etching at a low pressure of 0.5 mbar and a flow rate of 200 sccm. The efficacy of the water-repellent ... -
Watermarking: A review of software and hardware techniques
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)Watermarking is a well-known technique traditionally used in banknotes and other documents to discourage counterfeiting. It usually consists of semi-transparent symbols embedded on paper. Similar concepts were applied to ... -
Water‐Energy‐Food Security Nexus in the Eastern Nile Basin: Assessing the Potential of Transboundary Regional Cooperation
( John Wiley & Sons, Inc , 2017 , Book chapter)With increasing demands and pressures on energy, food, and water resources in the region of the Eastern Nile basin, development projects and also potential for conflict along the Nile waters have increased. This study ...
