تصفح حسب العنوان
السجلات المعروضة 7959 -- 7978 من 50304
-
Double switch two leg high gain boost converter for renewable energy applications in a DC microgrid
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)The voltage output at the terminals of a DC generating source such as Photovoltaic and Fuel cells is not enough to be integrated with the DC bus of a microgrid. Therefore, an efficient DC-DC converter is demanded for ... -
The double-edged sword of social media usage during the COVID-19 pandemic: demographical and cultural analyses
( Emerald Publishing , 2022 , Article)Purpose: This exploratory research aims to (1) investigate the bright and dark sides of social media use during the COVID-19 pandemic; (2) explore the impact of demographic factors on social media usage; and (3) assess the ... -
Double-zero-event studies matter: A re-evaluation of physical distancing, face masks, and eye protection for preventing person-to-person transmission of COVID-19 and its policy impact
( Elsevier , 2021 , Other)In a recent timely systematic review, Chu et al. [1] assessed the effectiveness of face masks, eye protection, and physical distancing for preventing COVID-19. Because the sample sizes are not large, especially in some ... -
Doubly dual nature of ammonium-based ionic liquids for methane hydrates probed by rocking-rig assembly
( Royal Society of Chemistry , 2016 , Article)This work presents a systematic study of methane hydrate inhibition in the presence of five structurally variable ionic liquids (ILs) belonging to the ammonium family—viz., tetra-alkylammonium acetate (TMAA), choline ... -
Downlink Interference Analysis of UAV-Based mmWave Fronthaul for Small Cell Networks
( IEEE , 2023 , Article)In this paper, an unmanned aerial vehicles (UAV)-based heterogeneous network is studied to solve the problem of transferring massive traffic of distributed small cells to the core network. First, a detailed three-dimensional ... -
Downpayment, mobility and default: A welfare analysis
( Elsevier Ltd , 2018 , Article)In this paper, I study the impact of the relaxation of downpayment requirements on home-ownership and default risk in the context of a static spatial life cycle model. Given its quantitative success in matching the U.S. ... -
Doxorubicin conjugates: a practical approach for its cardiotoxicity alleviation
( Taylor & Francis , 2024 , Article)Introduction: Doxorubicin (DOX) emerges as a cornerstone in the arsenal of potent chemotherapeutic agents. Yet, the clinical deployment of DOX is tarnished by its proclivity to induce severe cardiotoxic effects, culminating ... -
DPSIR framework and sustainable approaches of brine management from seawater desalination plants in Qatar
( Elsevier , 2021 , Article)Brine released from desalination plants is extremely high in salinity and contains various chemicals, which are harmful to the ecosystem. The disposal of brine has raised great concerns for the desalination industry around ... -
DPSM technique for ultrasonic field modelling near fluid–solid interface
( Elsevier , 2007 , Article)Distributed point source method (DPSM) is gradually gaining popularity in the field of non-destructive evaluation (NDE). DPSM is a semi-analytical technique that can be used to calculate the ultrasonic fields produced by ... -
DQN based Blockchain Data Storage in Resource-constrained IoT System
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Conference Paper)Applying blockchain technology in the Internet of Things (IoT) systems to realize massive data storage is a promising technology, which can eliminate the dependence of IoT on central servers and protect data security ... -
Dr Hanan talking about the cooperation with the MOPH to raise awareness about the Coronavirus
( جامعة قطر , 2020 , Video) -
Dr. Mahjoub Al-Zwairy urges everyone to think positively and take social responsibility.
( Qatar University , 2020 , Video) -
Draft Genome Sequence of an Extended-Spectrum β-Lactamase-Producing Klebsiella oxytoca Strain Bearing from Qatar.
( American Society for Microbiology , 2020 , Article)is an opportunistic human pathogen causing nosocomial infection. We report the draft genome of an extended-spectrum β-lactamase-producing isolate harboring an gene, a recently discovered colistin resistance analog, from ... -
Draft legal framework for shared water resources in the Arab World: is it really needed?
( Routledge , 2021 , Article)Attempts to establish a regional water convention covering shared water resources in the Arab world have been ongoing for more than a decade. During this time, a Draft Arab Water Convention has been proposed, and the content ... -
Drafting Human Trafficking Legislation: Binding Rules and Guiding Rules
( Carolina Academic Press , 2020 , Book chapter)In this article, I devote more focused and in-depth attention to a subject area that has not received the level of attention it deserves-the first topic, which distinguishes between binding conventions and soft principles ... -
Drag On Non-Spherical Particles In Non-Newtonian Fluids
( Qatar University , 1996 , Article)The drag coefficient (CD ) was determined for three different non-spherical particles (cubes, rectangles and cylinders) of different sizes falling in two different non-Newtonian fluids (glycerol and polymer - paraffin ... -
Drained Peak and Residual Interface Shear Strengths of Fine-Grained Soils for Pipeline Geotechnics
( American Society of Civil Engineers (ASCE) , 2019 , Article)This study presents the results of interface torsional ring shear tests conducted at intermediate normal stress levels that are usually prevalent at soil-pipeline interfaces under near-shore conditions. Four normally ...
