تصفح Faculty Contributions حسب العنوان
السجلات المعروضة 13580 -- 13599 من 17691
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Rheology of organoclay assisted extrusion of HDPE using Particle Image Velocimetry
( Institution of Chemical Engineers , 2015 , Article)Wall slip is often seen as a source of flow enhancement and can play a significant role during certain melt instabilities in polymer processing. In the present investigation, the effect of organoclay on the wall slip of ... -
Rheology of Triamine Functionalized Silica Reinforced Polymeric Gels Developed for Conformance Control Applications
( American Chemical Society , 2020 , Article)Recently, cross-linked polymers such as polyacrylamide (PAM)/polyethylenimine (PEI) have been used in conformance control applications to replace conventional lost circulation materials (LCMs). The objective of this work ... -
Rheology of upstream complex fluids
( Elsevier , 2023 , Book chapter)Rheology is an important characterizing technique as it affects all types of fluids. While oil and gas recovery is an operation that depends mainly on the interaction between different fluids, it is therefore important to ... -
Rhus coriaria induces senescence and autophagic cell death in breast cancer cells through a mechanism involving p38 and ERK1/2 activation
( Nature Publishing Group , 2015 , Article)Here, we investigated the anticancer effect of Rhus coriaria on three breast cancer cell lines. We demonstrated that Rhus coriaria ethanolic extract (RCE) inhibits the proliferation of these cell lines in a time- and ... -
Rhus coriaria L. (Sumac) evokes endothelium-dependent vasorelaxation of rat aorta: Involvement of the cAMP and cGMP pathways
( Frontiers Media S.A. , 2018 , Article)Rhus coriaria L. (sumac) is widely used in traditional remedies and cuisine of countries of the Mediterranean as well as Central and South-West Asia. Administration of sumac to experimental models and patients with diverse ... -
Rhus coriaria suppresses angiogenesis, metastasis and tumor growth of breast cancer through inhibition of STAT3, NFκB and nitric oxide pathways
( Nature Publishing Group , 2016 , Article)Recently, we reported that Rhus coriaria exhibits anticancer activities by promoting cell cycle arrest and autophagic cell death of the metastatic triple negative MDA-MB-231 breast cancer cells. Here, we investigated the ... -
Riboflavin Intake Inversely Associated with Cardiovascular-Disease Mortality and Interacting with Folate Intake: Findings from the National Health and Nutrition Examination Survey (NHANES) 2005-2016.
( MDPI , 2022 , Article)The association between intakes of riboflavin and mortality has not been examined intensively in general populations. In this study, 10,480 adults in the 2005-2016 National Health and Nutrition Examination Survey (NHANES) ... -
Rice Intake Is Associated with Longer Reaction Time and Interacts with Blood Lipids and Hypertension among Qatari Adults
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)We aimed to assess the association between rice intake and cognitive function among Qatari adults and test the interactions with health conditions. Data from 1000 adults aged ≥18 years old who attended the Qatar Biobank ... -
Rice is a potential dietary source of not only arsenic but also other toxic elements like lead and chromium
( Elsevier B.V. , 2017 , Article)Rice is a staple food and a good source of nutrition for half of the earth’s population including Middle Eastern countries. However, rice may accumulate hazardous levels of toxic elements. In KSA, rice is imported from ... -
A rich learning lesson using the Poisson distribution
( Elsevier B.V. , 2007 , Article)In this note, we explore the rich information about inference that the Poisson distribution has. The source of this information is mainly the fact that the mean and variance of this distribution are equal. -
Ride-through capability enhancement of VSC-HVDC based wind farms using low speed flywheel energy storage system
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)Reliable balancing of active power generated via wind farms is vital for power system stability and for maintaining system frequency deviations within acceptable limits. This paper presents a backup power balancing technique ... -
Ride-through capability of grid-connected brushless cascade DFIG wind turbines in faulty grid conditions-A comparative study
( IEEE , 2013 , Article)Doubly-fed induction generator (DFIG)-based wind turbines (WTs) are reported to suffer reliability problems due to the presence of slip-rings, brushes, and the gearbox. These disadvantages encouraged several research groups ... -
Ridge penalization-based generalized linear model (GzLM) for predicting risky-driving index
( IEOM Society , 2018 , Conference Paper)Road traffic crashes remain one of the major causes of preventable death and injury worldwide. Human behavior is considered one of the main factors leading to such tragic losses. In this paper, we analyze the responses of ... -
Ridge Penalization-based weighting approach for Eco-Efficiency assessment: The case in the food industry in the United States
( IOP Publishing Ltd , 2020 , Conference Paper)Eco-efficiency assessment is of great importance for monitoring and managing environmental and economic aspects of sustainable development. The eco-efficiency indicators are required to assess and measure the impact of ... -
Rifampin-warfarin interaction in a mitral valve replacement patient receiving rifampin for infective endocarditis: a case report
( SpringerOpen , 2016 , Article)Warfarin therapy is associated with many drug interactions that may cause a significant alteration in its anticoagulant effect. Rifampin is a widely used antimicrobial that has major interactions with several medications ... -
The Right to Freedom of Conscience: Western and Islamic Perspectives
(2021 , Article)With the constant reoccurrence of the question of peaceful coexistence among people of different religions, legal traditions, and understandings of freedom and human nature, there is a need for a fresh study of the concept ... -
Rights-based processes used by Qatar in response to the siege
( Nova Science Publishers, Inc. , 2019 , Book chapter)In Getting Disputes Resolved: Designing Systems to Cut the Costs of Conflict, Ury, Brett and Goldberg proposed three categories - power-based, rights-based, and interestbased - for analyzing interventions and processes ... -
The Rise and Fall of Teacher Leadership: A Post-Pandemic Phenomenological Study
( Routledge , 2023 , Article)This study explored teacher leadership functions during and post-school disruption, due to COVID-19 pandemic. Participants were recruited from three primary government schools in Qatar, and included 12 teachers, three ... -
Risk analysis with the dempster-shafer theory for smart city planning: The case of qatar
( MDPI , 2021 , Article)Smart cities support the enhancement of the quality of life of their residents, for which the use of a robust integrated platform of information and communication technology is required. However, not all cities have similar ... -
Risk and risk management practices: A comparative study between Islamic and conventional banks in Qatar
( Emerald , 2020 , Article)Purpose: This study aims to compare types and levels of risk and risk management practices (RMPs) including the recognition, identification, assessment, analysis, monitoring and control of risk in both Islamic and conventional ...
