تصفح Research Units حسب العنوان
السجلات المعروضة 3278 -- 3297 من 4691
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Protective Effect of Previous SARS-CoV-2 Infection against Omicron BA.4 and BA.5 Subvariants.
( Massachusetts Medical Society , 2022 , Article)The BA.4 and BA.5 subvariants of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.1.529 (omicron) variant have shown the capacity of escaping from neutralizing antibodies.1 These subvariants had an ... -
Protein tyrosine phosphatase 1B inhibition improves endoplasmic reticulum stress-impaired endothelial cell angiogenic response: A critical role for cell survival
( Spandidos publications , 2021 , Article)Endoplasmic reticulum (ER) stress contributes to endothelial dysfunction, which is the initial step in atherogenesis. Blockade of protein tyrosine phosphatase (PTP)1B, a negative regulator of insulin receptors that is ... -
Proteomic analysis of T. qataranse exposed to lead (Pb) stress reveal new proteins with potential roles in Pb tolerance and detoxification mechanism
( Frontiers Media , 2022 , Article)Soil lead (Pb) contamination is one of the environmental problems facing the modern world. Sources of Pb in soil include industrial activities such as mining and smelting processes, agricultural activities such as application ... -
Protocol for Preparing Synthetic Solutions Mimicking Produced Water from Oil and Gas Operations
( American Chemical Society , 2021 , Article)Produced water (PW) is the water associated with hydrocarbons during the extraction of oil and gas (O&G) from either conventional or unconventional resources. Existing efforts to enhance PW management systems include the ... -
Proton conducting blend membranes: physical, morphological and electronic properties
( Springer Verlag , 2017 , Article)Blend membranes of sulfonated poly(ether ether ketone) (SPEEK) and sulfonated polyetherimide (SPEI) have been prepared and investigated as a potential polymer electrolyte membrane (PEM) for direct methanol fuel cell (DMFC). ... -
Proxy reporting in education surveys: factors influencing accurate reporting in the 2012 Qatar Education Study
( Taylor & Francis (Routledge) , 2017 , Article)Proxy reporting is a common practice during survey data collection to increase response rates while reducing fieldwork costs, and agreement between proxies and self-reports is critical to make reliable and valid inferences. ... -
Pseudomonas aeruginosa: arsenal of resistance mechanisms, decades of changing resistance profiles, and future antimicrobial therapies.
( Future Medicine , 2015 , Article)Antimicrobial resistance is one of the most serious public health issues facing humans since the discovery of antimicrobial agents. The frequent, prolonged, and uncontrolled use of antimicrobial agents are major factors ... -
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 ...
