Qatar University Institutional Repository: المرسلات الحديثة
السجلات المعروضة 1 -- 20 من 23777
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تنصيب ووداع دراسة في مختارات من خطب الرئاسة الأمريكية
(2023 , Master Thesis)تنطلق هذه الدراسة من فرضية مفادها أنّ اختلاف المناسبة ينتج تقاليد خاصة في التواصل، فتختلف الخطابات وتشكلّاتها باختلاف السمات الزمانية والمكانية لها؛ كما تسعى لتأكيد مدى ترابط اللغة والسلطة والعلاقة التي تربط بينهما وكيفية ... -
Ervilia castanea (Mollusca, Bivalvia) populations adversely affected at CO2 seeps in the North Atlantic
( Elsevier B.V. , 2021 , Article)Sites with naturally high CO2 conditions provide unique opportunities to forecast the vulnerability of coastal ecosystems to ocean acidification, by studying the biological responses and potential adaptations to this ... -
Co2 Removal Using Imidazolium-Based Ionic Liquid -Aspen Plus Modelling Study
(2023 , Master Thesis)Novel technologies that decrease the level of CO2 in our atmosphere are crucial for minimizing the potential risks associated with climate change, and immediate advancements are needed for such technologies to operate at ... -
Assessment and Prediction of Body Fat Composition Using A Variety of Machine Learning Algorithms
(2023 , Master Thesis)Body composition is critical for health outcomes and has been researched in various populations and conditions like obesity, diabetes, and many more. Qatar Biobank collected anthropometric and biomedical data from individuals ... -
The Impact of Corporate E-Learning Use on Job Performance: A Meta Analysis
(2023 , Master Thesis)This research aims to understand and validate the factors affecting the use of e-learning and its consequences on the employees’ performance within organizations. The COVID-19 era highlighted the effectiveness of e-learning. ... -
Evaluating the Short-Term Sustainability of Shared E-Scooters: A Usage-Centered Approach
(2023 , Master Thesis)Recent years have seen a sharp rise in the use of shared electric scooters, which is indicative of a significant change in usage patterns. However, due to their emergence, their sustainability impacts are not well known. ... -
Application of Non-Noble Metal and Cellulose Nanocrystals Modified Date Pits as Novel Adsorbents for Groundwater Treatment
(2023 , Master Thesis)This work was designed to investigate the potential of eliminating lithium (Li) and molybdenum (Mo) ions from groundwater through adsorption. A novel adsorbent was prepared by using agricultural waste, namely date pits. ... -
The Application of Nanoparticles Made from Aluminium Foil Waste in Remediating Boron from Desalinated Water
(2023 , Master Thesis)Desalination is a method used to eradicate several salts and minerals so that their concentrations can fall in the acceptable range. Boron is a widely known drinking water contaminant and is broadly dispersed in the ... -
Kinetics of CO2 Reaction with Amino-Butanol and Piperazine Using Stopped-Flow Apparatus
(2023 , Master Thesis)This research project focuses on the kinetics of CO2 reaction with Amino-butanol (AB) and Piperazine (PZ) for carbon capture. The study examines the CO2 reaction rate of different concentrations of the AB-PZ solution (0.2, ... -
Association between Dietary Patterns and Cognitive Function among Qatari Adults: A Cross-Sectional Analysis of the Qatar Biobank Study.
( MDPI , 2023 , Article)This study aimed to assess the association between dietary patterns and cognitive function among Qatari adults. In a cross-sectional analysis, data on 1000 Qatari adults attending the Qatar Biobank Study (QBB) aged ≥18 ... -
Association of Macronutrients Intake with Body Composition and Sarcopenic Obesity in Children and Adolescents: A Population-Based Analysis of the National Health and Nutrition Examination Survey (NHANES) 2011–2018
( MDPI , 2023 , Article)The association of macronutrients intake with body composition and sarcopenic obesity remains uncertain in children and adolescents. We aimed to explore the association between macronutrients intake and body composition, ... -
Association between war-related traumatic events and blood pressure trajectory: a population-based study among the mid-aged and older Palestinian adults living in Gaza
( Frontiers Media , 2023 , Article)Background: Little is known regarding health status in an environment characterized by instability and ongoing war risks. This study investigated hypertension disease burden and associations of war-related traumatic events ... -
Dietary Patterns and Circadian Syndrome among Adults Attending NHANES 2005–2016
( MDPI , 2023 , Article)The study aimed to assess the associations of dietary patterns and circadian syndrome (CircS). Data from National Health and Nutrition Examination Survey (NHANES) 2005–2016 were analyzed (n = 10,486). Factor analysis was ... -
Review of Progress and Prospects in Research on Enzymatic and Non- Enzymatic Biofuel Cells; Specific Emphasis on 2D Nanomaterials
( Bentham Science Publishers , 2022 , Article)Energy generation from renewable sources and effective management are two critical challenges for sustainable development. Biofuel Cells (BFCs) provide an elegant solution by combining these two tasks. BFCs are defined by ... -
The effect of graphene on the activation energy of grain growth for the nanocrystalline thermoelectric n‑type Bi2Te2.7Se0.3
(2022 , Article)Even though bismuth telluride is frequently produced by mechanical alloying for thermoelectric materials, no data has been published addressing the thermal behavior and activation energy of the milled n-type Bi2Te2.7Se0.3 ... -
Evaluation of the Influence of Eggshell (ES) Concentration on the Degradation Behavior of Mg–2.5Zn Biodegradable Alloy in Simulated Body Fluid
( American Chemical Society (ACS) , 2023 , Article)Currently, permanent vascular stents are fabricated using titanium and stainless steel implants that are nondegradable and offer high stability, but they have certain disadvantages. For example, the prolonged exposition ... -
Recent Advances in Copper-Based Materials for Sustainable Environmental Applications
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)In recent years, copper-based nanomaterials have gained significant attention for their practical applications due to their cost-effectiveness, thermal stability, selectivity, high activity, and wide availability. This ... -
Impact of surface coating on electrochemical and thermal behaviors of a Li-rich Li1.2Ni0.16Mn0.56Co0.08O2 cathode
( Royal Society of Chemistry , 2020 , Article)Lithium-rich layered oxide materials are considered as potential cathode materials for future high-performance lithium-ion batteries (LIBs) owing to their high operating voltage and relatively high specific capacity. ... -
Understanding the Nature of Capacity Decay and Interface Properties in Li//LiNi0.5Mn1.5O4 Cells by Cycling Aging and Titration Techniques
( American Chemical Society , 2020 , Article)The spinel structure LiNi0.5Mn1.5O4 (LNMO) is a propitious cathode material for next-generation lithium-ion batteries for fast charge-discharge applications, but its capacity decay mechanism and rate-limiting process are ... -
Recent progress, challenges, and perspectives in the development of solid-state electrolytes for sodium batteries
( Elsevier , 2023 , Article)Sustainable energy storage technologies, such as all-solid-state sodium batteries, are seen as a promising field of research. The high energy and power densities of all-solid-state sodium batteries, together with their low ...