Browsing by Title
Now showing items 25771-25790 of 49434
-
Understanding the Scales Formation Inhibition Mechanism on C-Steel in a Sour Media
( The Electrochemical Society , 2019 , Conference Paper)Corrosion control in sour environments is a severe challenge for the oil and gas industries with respect to sour media. One of the approaches to mitigate such a problem is to use corrosion inhibitors (CI). The selection ... -
Understanding the structure-function relationship of HPRT1 missense mutations in association with Lesch-Nyhan disease and HPRT1-related gout by in silico mutational analysis.
( Elsevier , 2019 , Article)The nucleotide salvage pathway is used to recycle degraded nucleotides (purines and pyrimidines); one of the enzymes that helps to recycle purines is hypoxanthine guanine phosphoribosyl transferase 1 (HGPRT1). Therefore, ... -
Understanding the topologies of BitTorrent networks: A measurement view
(2012 , Conference Paper)BitTorrent (BT) is one of the most popular Peer-to-Peer (P2P) network applications. Most characteristics (except the topology) of BT network have been examined extensively by measurement approaches. In this work, we deploy ... -
Understanding Traffic Accidents among Young Drivers in Qatar
( MDPI , 2022 , Article)Young drivers are generally associated with risky driving behaviors that can lead to crash involvement. Many self-report measurement scales are used to assess such risky behaviors. This study is aimed to understand the ... -
Understanding Water Consumption in Qatar: Evidence From a Nationally Representative Survey
( Taylor and Francis Ltd. , 2022 , Article)This paper presents an analysis of a nationally representative (n = 1,002) telephone survey conducted in Qatar on habits, perceptions, and religious attitudes related to water use. Our empirical analysis yields three main ... -
Understanding Water Consumption in Qatar: Evidence From a Nationally Representative Survey
( Taylor & Francis , 2022 , Article)This paper presents an analysis of a nationally representative (n = 1,002) telephone survey conducted in Qatar on habits, perceptions, and religious attitudes related to water use. Our empirical analysis yields three main ... -
Understanding Workplace Adoption of Social Networking Sites: Employers’ perspective
( Qatar University , 2012 , Article)Studies on social networking sites (SNSs) rarely touched on the acceptance of SNS use in the workplace. This study, in turn, attempts to fill this gap by explaining the acceptance of SNS use in the workplace by proposing ... -
Undetectable Cyber Attacks on Communication Links in Multi-Agent Cyber-Physical Systems
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)The objective in this paper is to study and develop conditions for a network of multi-agent cyber-physical systems (MAS) where a malicious adversary can utilize vulnerabilities in order to ensure and maintain cyber attacks ... -
Undoing Babel: The tower of Babel in Anglo-Saxon literature
( University of Toronto Press , 2018 , Book)The Tower of Babel narrative is one of the most memorable accounts of the Bible, and its interpretative potential has produced a vast array of literary adaptations. Undoing Babel is the first extensive examination of the ... -
UNESCO on Al Bairaq World
( Qatar University , 2012 , Video) -
Unexpected adrenal pheochromocytoma associated with a generalized tonic-clonic seizure in a prepubertal boy: A case report.
( Lippincott, Williams & Wilkins , 2021 , Article)Pheochromocytoma (PHEO) is a rare neuroendocrine tumor arising from chromaffin cells of the adrenal medulla. Most pediatric PHEOs are functional tumors, and clinical manifestations are related to catecholamine hypersecretion ... -
Unexpected presentation of ischemic colitis: a case report and review of the literature.
( Oxford University Press , 2023 , Other)Ischemic colitis accounts for many cases of bowel infarction. Usually, it has various manifestations, such as vomiting, abdominal pain, hematochezia and many other symptoms. Risk factors might include age, medications, ... -
Unfair Payment Issues in Construction: Re-Thinking Alternative Payment Method For Tier-1 Contractors to Subcontractors
( Qatar Univesrity Press , 2020 , Conference Paper)Recent statistics reveal substantial increase in late payments cases from 18% to 27%; with over £30 billion unpaid invoices to UK contractors. Furthermore, 82% of overdue invoices are monies owed to subcontractor by tier-1 ... -
Unified energy management and load control in building equipped with wind-solar-battery incorporating electric and hydrogen vehicles under both connected to the grid and islanding modes
( Elsevier Ltd , 2019 , Article)This paper presents a unified model for home energy management. The proposed model optimizes the cogeneration of wind, solar, and battery storage units. The introduced tool considers electric and hydrogen vehicles and ... -
A unified framework for bias assessment in clinical research
( Lippincott, Williams & Wilkins , 2019 , Article)Methodological flaws, limitations, and inadequate practices in research are well known and pose threats to the internal validity of any research study. However, there are ways of safeguarding research conduct to reduce the ... -
Unified Performance Analysis for Multiuser Mixed η - μ and M - Distribution Dual-Hop RF/FSO Systems
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)A mixed free-space optical (FSO) communication scheme is considered with the help of a fixed gain relay. We assume that the links from the source to the relay are radio frequency links with multiuser diversity operating ... -
Unified power flow controller for low voltage ride through capability of wind-based renewable energy grid-connected systems
( IEEE , 2011 , Conference Paper)Due to the large increase in number of installed high power renewable energy generating systems such as wind energy power plants, one of the important evolving requirement is riding through the fault at low or zero voltage. ... -
Uniform fractional factorial design tables for energy piles with maximum thermal conductance
( WITPress , 2017 , Conference Paper)Energy Piles are the heat exchangers of Ground Source Heat Pumps (GSHP) that transfer the buildings heat to the lower temperature shallow ground reducing the energy consumption in the cooling of buildings. These piles are ... -
Uniform Ordered Two-Dimensional Mesoporous TiO2 Nanosheets from Hydrothermal-Induced Solvent-Confined Monomicelle Assembly
( American Chemical Society , 2018 , Article)Two-dimensional (2D) nanomaterials have been the focus of substantial research interest recently owing to their fascinating and excellent properties. However, 2D porous materials have remained quite rare due to the difficulty ... -
Unifying the diagnosis of gestational diabetes mellitus: Introducing the NPRP criteria
( Elsevier , 2021 , Article)AimsDisagreement about the appropriate criteria for the diagnosis of gestational diabetes mellitus (GDM) persists. This study examines an alternative approach which combines information from all time-points on the glucose ...
