Browsing Research Units by Title
Now showing items 3999-4018 of 4974
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Spectrophotometric Determination of the Honey Bee Quality
( Qatar University Press , 2021 , Poster)Honey produced by bees from nectar in flowers and plants, is an aqueous supersaturated sugar solution, mainly monosaccharide (fructose and glucose) (70%–80%) and water (10%–20%). 5-Hydroxymethylfurfural (5-HMF) content in ... -
Spectroscopy characterizations of nanoscale polymer-based coatings
( Elsevier , 2023 , Book chapter)Nanoscale polymer-based coatings have become center of importance in present day's materials research. Because of their unique properties, such as less weight, ductility, and ease of manufacture, polymer-based films are ... -
Spectroscopy of Polymer Nanocomposites
( Elsevier Inc. , 2016 , Book)Spectroscopy of Polymer Nanocomposites covers all aspects of the spectroscopic characterization of polymer nanocomposites. More than 25 spectroscopy characterization techniques - almost all used in materials science - are ... -
Spectroscopy-introducing the advantages and application areas in polymer nanocomposites
( Elsevier Inc. , 2016 , Book chapter)Spectroscopy is an inevitable tool of characterizing polymer nanocomposites. Various spectroscopic techniques unveil the nature of dispersion of nanoparticles within the matrix polymer, the interactions between filler and ... -
The Spectrum of Antibiotic Prescribing During COVID-19 Pandemic: A Systematic Literature Review
( Mary Ann Liebert , 2021 , Article Review)Objectives: Over the last decades, there has been a significant increase in antimicrobial prescribing and consumption associated with the development of patients’ adverse events and antimicrobial resistance (AMR) to the ... -
The Spectrum of Mutations of Homocystinuria in the MENA Region
( MDPI , 2020 , Article Review)Homocystinuria is an inborn error of metabolism due to the deficiency in cystathionine beta-synthase (CBS) enzyme activity. It leads to the elevation of both homocysteine and methionine levels in the blood and urine. ... -
Speed perception and actual speed in a driving simulator and real-world: A validation study
( Elsevier Ltd , 2019 , Article)Background: Driving simulators have become an effective research tool in traffic safety, but the validity of results obtained in simulated environments remains a debated issue of high importance. Objective: The objective ... -
SpiralSRA: A threat-specific security risk assessment framework for the cloud
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)Conventional security risk assessment approaches for cloud infrastructures do not explicitly consider risk with respect to specific threats. This is a challenge for a cloud provider because it may apply the same risk ... -
Sport Diplomacy and Soft Power through Qatar's FIFA World Cup 2022: A Case of Generation Amazing
( Gulf Studies center - College of Arts & Sciences - Qatar University , 2022 , Conference Paper)Sport mega events (SMEs) such as the upcoming FIFA men's World Cup 2022 to be hosted by the State of Qatar have huge significance in how a hosting nation can use the status to influence or (re)build its influence as part ... -
Spray Deposition of PDMS/Candle Soot NPs Composite for Self-Cleaning Superhydrophobic Coating
( Wiley-VCH Verlag , 2020 , Article)The preparation of superhydrophobic coating using cheap candle soot nanoparticles (CS NPs) collected from candle flame is a very novel research topic. A less than 30 nm sized candle soot particles are collected by passing ... -
Stability in 3D and 2D/3D hybrid perovskite solar cells studied by EFISHG and IS techniques under light and heat soaking
( Elsevier B.V. , 2019 , Article)We investigate the effect of temperature and light soaking on the stability and charge carrier behavior in triple cation 3-Dimensional (3D) and 2-Dimensional (2D)/3-Dimensional perovskite solar cells (PSCs) using electric ... -
Stability of organometal halide perovskite solar cells and role of HTMs: Recent developments and future directions
( Royal Society of Chemistry , 2018 , Article Review)Perovskite solar cells (PSCs) have recently emerged as one of the most exciting fields of research of our time, and the World Economic Forum in 2016 recognized them as one of the top 10 technologies in 2016. With 22.7% ... -
Stable and effective super-hydrophilic polysulfone nanofiber mats for oil/water separation
( Elsevier Ltd , 2015 , Article)Hydrophobicity of polysulfone is the main constraint facing wide application in the most important field; water treatment, although this polymer shows promising characteristics to be used in different separation technologies. ... -
Stable N-doped & FeNidecorated graphene non-precious electrocatalyst for Oxygen Reduction Reaction in Acid Medium
( Nature Publishing Group , 2018 , Article)NiFe nanoparticles-decorated & N-doped graphene is introduced as an effective and stable nonprecious electrocatalyst for ORR in the acid medium. Compared to conventional Pt/C electrodes under the same conditions, the ... -
Staminodes evolution and in vitro development innovation in date palm (Phoenix dactylifera L.)
( Elsevier Masson SAS , 2019 , Article)The in vitro cultivation of date palm staminodes (vestigial stamens) at different stages of female floral ontogenesis confirms the persistence at an immature state of such organs at all the floral differentiation stages. ... -
Standalone photoconversion of CO2 using Ti and TiOx-sandwiched heterojunction photocatalyst of CuO and CuFeO2 films
( Elsevier , 2021 , Article)Artificial photoconversion of carbon dioxide to value-added chemicals remains a challenge. In this work, we synthesize heterojunction copper oxide and copper iron oxide (CuO/CuFeO2; CFO) films on transparent conducting ... -
The State of Qatar and the United Arab Emirates
( Elsevier , 2019 , Article)This chapter discusses the principles of road traffic signal control in the State of Qatar and the United Arab Emirate (UAE). In the first section, traffic control standards used in both countries are presented with a focus ... -
State of the Art in Separation Processes for Alternative Working Fluids in Clean and Efficient Power Generation
( MDPI , 2022 , Article Review)Gas turbines must now comply with much stricter emission control regulations. In fact, to combat the greenhouse effect, regulatory authorities have drastically reduced allowable emission levels. For example, in less than ... -
Stateless Security Risk Assessment for Dynamic Networks
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)Emerging networking technologies, such as cloud and Software Defined Networking, provide flexibility, elasticity and functionalities to change the network configurations over time. However, changes also impose unpredictable ... -
Static and dynamic investigations on leaching/retention of nutrients from raw poultry manure biochars and amended agricultural soil
( MDPI , 2021 , Article)In this study, nutrients release/adsorption from/by raw poultry manure-derived biochar produced at a pyrolysis temperature of 600 °C (RPM-B) was assessed under static and dynamic conditions. Batch sequential leaching ...