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السجلات المعروضة 3296 -- 3315 من 4709
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Psychotic-like experiences among university female students in Qatar: A qualitative-phenomenological study
( Frontiers Media , 2022 , Article)Background and aims: Psychotic-like experiences (PLEs) are hallucinatory or delusional experiences that fall below the threshold of a diagnosable psychotic disorder. Although PLEs are common across the spectrum of psychiatric ... -
Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes
( MDPI , 2022 , Article)Direct alcohol fuel cells are deemed as green and sustainable energy resources; however, CO-poisoning of Pt-based catalysts is a critical barrier to their commercialization. Thus, investigation of the electrochemical CO ... -
Pt-doped armchair graphene nanoribbon as a promising gas sensor for CO and CO2: DFT study
( Elsevier , 2021 , Article)In this work, four armchair graphene nanoribbon (AGNR) based sensor materials were built using Atomistic ToolKit Virtual NanoLab (ATK-VNL) and utilized to detect carbon monoxide (CO) and carbon dioxide (CO2) gases. First, ... -
Pt-Ru nanoparticles functionalized mesoporous carbon nitride with tunable pore diameters for DMFC applications
( Elsevier , 2017 , Article)Mesoporous carbon nitrides (MCN) with different pore diameters are prepared by a nano-hard-templating strategy using SBA-15 with tunable pore diameters as templates through a simple polymerization of carbon tetrachloride ... -
Public Acceptance of Taxation in Qatar
( Qatar University , 2016 , Report)Most Gulf countries have acknowledged that the traditional rentier system requires basic economic reform, and VAT could prove a more stable source of government revenue for oil producing countries. Results from two separate ... -
Public awareness and perceptions of taxation in a changing Gulf economy
( SESRI , 2017 , Report)For the VAT scheme to succeed in Qatar, public awareness is necessary. Consumers need to understand how and why the VAT will affect their budgets. Perhaps more importantly, businesses need to understand how to modify ... -
Public Spending Priorities in Qatar
( SESRI , 2017 , Report)Together with previous survey findings, SESRI’s study of fiscal priorities among Qataris demonstrates the importance to citizens of healthcare and education, and to a lesser extent other sectors such as social security ... -
Public transport versus solo travel mode choices during the COVID-19 pandemic: Self-reported evidence from a developing country
( Elsevier , 2021 , Article)A sharp decline in public transport use has been reported worldwide since the outbreak of the COVID-19 pandemic. As the virus spreads through close contacts, particularly in closed environments, public transport vehicles ... -
Public–Private Partnership in Tunisia: Enfidha Airport Assessment of an Infrastructure Achievement
( Taylor & Francis , 2016 , Article)One of the largest recent private-sector investments and the first airport private-sector concession in the Maghreb is Enfidha Airport, a key factor in the success of the Tunisian Government’s public– private partnership ... -
Publisher Correction: A lightweight neural network with multiscale feature enhancement for liver CT segmentation (Scientific Reports, (2022), 12, 1, (14153), 10.1038/s41598-022-16828-6)
( Nature Research , 2022 , Other)[No abstract available] -
Purification and biochemical characterization of a novel thermostable protease from the oyster mushroom Pleurotus sajor-caju strain CTM10057 with industrial interest
( BMC , 2019 , Article)Background Proteases are hydrolytic enzymes that catalyze peptide linkage cleavage reactions at the level of proteins and peptides with different degrees of specificity. This group draws the attention of industry. More ... -
Purification of colloidal oil in water emulsions by cationic adsorbent prepared from recycled polyethylene waste
( Elsevier , 2024 , Article)This study deals with removing crude oil droplets from colloidal oil in water emulsions. The target was the development of efficient adsorbents for the tertiary treatment of industrial-produced water (PW). The novel adsorbent ... -
Purification of emulsified oily polluted waters with modified melamine foams
( Elsevier , 2023 , Article)Oil and gas industry operations produce tremendous amounts of wastewater (produced water; PW). Tertiary treatment of the PW in the final treatment stage is challenging due to the presence of colloids with sizes < 500 nm ... -
Pursuing Frugal Innovation for Sustainability at the Grassroots Level
( Cambridge University Press , 2021 , Article)Firms are often criticized for their reluctance to embrace sustainability in their business strategies. Frugal innovation is a recent concept that represents a new way for firms to serve underserved customers in developing ... -
PVA/chitosan/silver nanoparticles electrospun nanocomposites: Molecular relaxations investigated by modern broadband dielectric spectroscopy
( MDPI AG , 2018 , Article)In this study, we used broadband dielectric spectroscopy to analyze polymer nanofibers of poly(vinyl alcohol)/chitosan/silver nanoparticles. We also studied the effect of incorporating silver nanoparticles in the polymeric ... -
Pyridoxine non-responsive p.R336C mutation alters the molecular properties of cystathionine beta-synthase leading to severe homocystinuria phenotype
( Elsevier , 2022 , Article)The prevalence of homocystinuria in Qatar is 1:1800, mainly due to a founder missense mutation p.R336C. • The cystathionine beta-synthase (CBS) R336C mutant was bacterially expressed, purified and its molecular properties ... -
Pyrite (FeS2)-supported ultrafiltration system for removal of mercury (II) from water
( Springer , 2021 , Article)This study investigated the Hg(II) removal efficiencies of the reactive adsorbent membrane (RAM) hybrid filtration process, a removal process that produces stable final residuals. The reaction mechanism between Hg(II) and ... -
Pyrite Scale Removal Using Green Formulations for Oil and Gas Applications: Reaction Kinetics
( American Chemical Society , 2019 , Article)Pyrite is one of the toughest iron sulfide scales to remove, which causes major problems in oil and gas production by damaging production equipment. The use of inorganic acid in iron sulfide scale removal particularly ... -
Pyrolysis Process as a Sustainable Management Option of Poultry Manure: Characterization of the Derived Biochars and Assessment of their Nutrient Release Capacities
( MDPI , 2019 , Article)Raw poultry manure (RPM) and its derived biochars at temperatures of 400 (B400) and 600 ◦C (B600) were physico-chemically characterized, and their ability to release nutrients was assessed under static conditions. The ... -
Pyrolytic elimination of ethylene from ethoxyquinolines and ethoxyisoquinolines: a computational study
( Nature Research , 2023 , Article)This work reports a thermo-kinetic study on unimolecular thermal decomposition of some ethoxyquinolines and ethoxyisoquinolines derivatives (1-ethoxyisoquinoline (1-EisoQ), 2-ethoxyquinoline (2-EQ), 3-ethoxyquinoline (3-EQ), ...
