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Now showing items 5360-5379 of 49531
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Comparative study of sliding mode control and vector control in a five-phase permanent magnet synchronous motor drive
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)Different control strategies have been recently proposed. In this paper, two control techniques are compared in a five-phase permanent magnet synchronous motor drive (PMSM). The strategies being compared are based on the ... -
Comparative study of SMES in Dubai and south Korea
(2017 , Master Thesis)Gulf Cooperation Council (GCC) countries have enjoyed large amounts of oil revenues for their development and prosperity over past fifty years or so. However, since the dramatic drop in oil prices in 2014, all the GCC ... -
Comparative study of the effect of oleuropein and hydroxytyrosol rich extracts on the reproductive toxicity induced by bisphenol A in male rats: biochemical, histopathological, and molecular analyses
( Springer , 2023 , Article)Bisphenol A, or BPA, goes into the composition of a large number of products including sunglasses, infant’s feeding bottles, receipts, or food packaging. Nowadays, there is a growing evidence that BPA may be at the origin ... -
A comparative study of the effects of clumping, substrate, light, depth of burial and soil moisture upon the germination of seeds of weeds and crops grown in the sudan gezira.
( Qatar University , 1985 , Article)The influence of the number of seeds per clump upon germination of oryza sativa L., Gossypium hirsutum L., Brachiaria eruciformis (Sm.) Griseb, Dinbera retroflexa (Vahl) Panz. and Echinochloa colonum (L.) Link was investigated ... -
A comparative study of the mechanical properties of low Density polyethylene (ldpe)
( Qatar University , 1997 , Article)Mechanical properties of engineering polymers which are the most important properties for design and construction purposes are diverse. This has been proved by investigation tensile properties of different grades of LDPE ... -
A comparative study of the treatment of ethylene plant spent caustic by neutralization and classical and advanced oxidation
( Academic Press , 2015 , Article)The treatment of spent caustic produced from an ethylene plant was investigated. In the case of neutralization alone it was found that the maximum removal of sulfide was at pH values below 5.5. The higher percentage removal ... -
Comparative Study on Beneficial Effects of Hydroxytyrosol- and Oleuropein-Rich Olive Leaf Extracts on High-Fat Diet-Induced Lipid Metabolism Disturbance and Liver Injury in Rats
( Hindawi , 2020 , Article)Oleuropein and hydroxytyrosol, as major compounds of olive leaves, have been reported to exert numerous pharmacological properties, including anticancer, antidiabetic, and anti-inflammatory activities. The purpose of this ... -
A comparative study on chemical profiles and biological activities of different extracts of three Verbascum species from Turkey: In vitro, in silico and network pharmacological approaches
( Elsevier , 2023 , Article)The present study aimed to evaluate the antioxidant and enzyme inhibition properties of aerial part of Verbascum cheiranthifolium Boiss. V. myriocarpum Boiss. & Heldr. and V. pyroliforme (Boiss. & Heldr.) Kuntze as well ... -
Comparative Study on Gas-Sensing Properties of 2D (MoS2, WS2)/PANI Nanocomposites-Based Sensor
( MDPI , 2022 , Article)NH3 is a highly harmful gas; when inhaled at levels that are too high for comfort, it is very dangerous to human health. One of the challenging tasks in research is developing ammonia sensors that operate at room temperature. ... -
Comparative study on low and high pressure CO2 adsorption capacity of organic materials
( AIChE , 2016 , Conference Paper)Application of solid sorbents for CO2 capture and separation has been under consideration since last decades owing to the promising feature of repeatable use, low cost of regeneration and thermo physical stability. However, ... -
Compared to What? Is BMI Associated with Histopathological Changes in Laparoscopic Sleeve Gastrectomy Specimens?
( Springer New York LLC , 2019 , Article)Background: Obesity is a risk for many different cancers. Laparoscopic sleeve gastrectomy (LSG) is common, and benign or pre-malignant histopathology types are reported in the removed gastric specimens. We assessed whether ... -
Comparing connection to theory in Bachelor's theses: Old research university versus new regional university college
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Article)Quality of higher education is often assumed to be linked to the size of the faculty. Therefore, this study tested the hypothesis whether Bachelor's theses in ecology at a large, old research university would have more ... -
Comparing different methods for prediction of liquefied natural gas Densities
( Qatar University , 2005 , Article)The densities of several liquefied natural gas (LNG) mixtures and pure methane using different equations of state and correlations have been predicted and compared with the experimental values. The equations of state were ... -
Comparing eurocode 2 prestress loss estimations to strains measured on a pretensioned bridge beam
( CRC Press/Balkema , 2019 , Conference Paper)The implementation of Eurocode 2 (EC2) for the design of concrete structures in South Africa in the near future is pending and necessitates refined understanding of EC2’s prediction models; including prestress losses and ... -
Comparing Levels of Metabolic Predictors of Coronary Heart Disease between Healthy Lean and Overweight Females.
( MDPI , 2021 , Article)Screening for the metabolomic signature of coronary heart disease (CHD) before disease onset could help in early diagnosis and potentially disease prevention. In this study, the levels of 17 CHD metabolic biomarkers in ... -
Comparing metabolic profiles between female endurance athletes and non-athletes reveals differences in androgen and corticosteroid levels
( Elsevier , 2022 , Article)Endurance training is associated with physiological changes in elite athletes, but little is known about female-specific effects of endurance training. Despite the significant rise in female sports participation, findings ... -
Comparing Methods for Induction of Insulin Resistance in Mouse 3T3-L1 Cells.
( Bentham Science Publishers , 2024 , Article)Cell culture plays a crucial role in addressing fundamental research questions, particularly in studying insulin resistance (IR) mechanisms. Multiple in vitro models are utilized for this purpose, but their technical ... -
Comparing models of problem and project-based learning (PBL) courses and student engagement in civil engineering in Qatar
( Modestum LTD , 2020 , Article)Background: While improved student engagement has been highlighted as an essential goal and a major outcome of Problem and Project-Based learning (PBL), little empirical evidence has been provided regarding types and forms ... -
Comparing Quantitative and Qualitative Methods for Detecting the In Vitro Activity of Colistin against Different Gram-Negative Bacilli
( Austin Publishing Group , 2021 , Article)The surge in the prevalence of Multidrug-Resistant (MDR) Gram-negative bacterial infections with limited treatment led to colistin reusing to treat MDR infections. This study aimed to determine economical, simple, and ... -
Comparing student self-assessments of global communication with trained faculty and standardized patient assessments
( Elsevier Inc. , 2018 , Article)Background and purpose: Assess the reliability of first year pharmacy student assessments completed by faculty members in comparison with a standardized patient (SP), and student self-assessments during a structured ...