Browsing Faculty Contributions by Title
Now showing items 9037-9056 of 17338
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Investigation of the effect of polyelectrolyte structure and type on the electrokinetics and flocculation behavior of bentonite dispersions
( Elsevier B.V. , 2017 , Article)The influence of surface charge type and density, and molecular weight of cationic, anionic and amphoteric polyacrylamide (PAM) on the electrokinetics, adsorption and flocculation behavior of highly stable bentonite ... -
Investigation of the effect of surfactant on the electrokinetic treatment of PFOA contaminated soil
( Elsevier , 2022 , Article)Perfluorooctanoic acid (PFOA) is a persistent, nonbiodegradable environmental pollutant progressively becoming more problematic. Due to its ubiquitous use, PFOA is one of the PFAS chemicals frequently detected in the ... -
Investigation of the Effect of the Force-Frequency on the Behaviour of a New Viscous Damper for Railway Applications
( Qatar Univesrity Press , 2020 , Conference Paper)The primary purpose of this work is to experimentally investigate the damping coefficient of a viscous damper, intended to be used in railway applications to reduce noise emission. The viscous shock absorber used in this ... -
Investigation of the Effect of The Temperature and Magnetization Pattern on Flux Density, Instantaneous Torque, Unbalanced Magnetic Forces of a Surface Inset PMM
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)Electrical machines utilized in domestic applications such as ceiling fans should have low losses and cost. Permanent magnets are used instead of rotor excitation to reduce losses. Therefore, not only the losses of the ... -
Investigation of the genetic structure of Kabyle and Chaouia Algerian populations through the polymorphism of Alu insertion markers
( Taylor and Francis Ltd , 2019 , Article)Background: In Algeria, as in all North Africa, Berbers constitute the old background of the population. Today, Berber speakers account for only ∼ 25% of Algerians. This decline is the product of a complex human settlement ... -
Investigation of the Learning Environment in Higher and Lower Performing "Education for a New Era" Schools
(2010 , Conference Paper)Recently, Qatar established key elements of educational reform including curriculum standards; emphasis on student-centered teaching; charter school establishment; standards-based assessment; English as the language of ... -
Investigation of the performance of biocompatible gas hydrate inhibitors via combined experimental and DFT methods
( Academic Press , 2017 , Article)In this work, three ionic liquids (ILs) from the bio-compatible family of choline cations attached to anions of varying hydrophobicity namely: choline acetate (ChOAc), choline bistriflamide (ChNtf2), and choline chloride ... -
An investigation of the relationship between cyberbullying, cybervictimization and depression symptoms: A cross sectional study among university students in Qatar
( Public Library of Science , 2021 , Article)Background Cyberbullying is a modern form of bullying that could be practiced electronically or on the internet. It is related to different mental health issues such as depression, which can affect both the cyberbully and ... -
Investigation of the steps involved in the difference of susceptibility of Ephestia kuehniella and Spodoptera littoralis to the Bacillus thuringiensis Vip3Aa16 toxin
( Elsevier , 2011 , Article)BUPM95 is a Bacillus thuringiensis subsp. kurstaki strain producing the Vip3Aa16 toxin with an interesting insecticidal activity against the Lepidopteran larvae Ephestia kuehniella. Study of different steps in the mode of ... -
Investigation of the structural, optical and gas sensing properties of PANI coated Cu-ZnS microsphere composite
( Royal Society of Chemistry , 2020 , Article)Polyaniline (PANI)/Cu-ZnS composites with porous microspheres are prepared by a hydrothermal and in situ polymerization method. The structural, optical, and morphological properties are characterized by X-ray powder ... -
Investigation of the temperature-relatedwear performance of hard nanostructured coatings deposited on a s600 high speed steel
( MDPI AG , 2019 , Article)Thin hard coatings are widely known as key elements in many industrial fields, from equipment for metal machining to dental implants and orthopedic prosthesis. When it comes to machining and cutting tools, thin hard coatings ... -
Investigation of the tribological and biomechanical properties of CrAlTiN and CrN/NbN coatings on SST 304
( Elsevier Ltd , 2017 , Article)This study examines the influence of thin layer coatings of CrAlTiN and CrN/NbN, deposited via physical vapor, on the biocompatibility, mechanical, tribological, and corrosion properties of stainless steel 304. The ... -
Investigation of the use of TiO2 doped with metal ions in water disinfection
( IWA Publishing , 2010 , Article)This research was conducted to improve titanium dioxide by transition metal doping using cooper. Sol gel method was used to prepare metal doped TiO 2. Titanium isopropoxide and commercial TiO2 P25 were employed as catalyst ... -
Investigation of the use of TiO2 doped with metal ions in water disinfection
( IWA Publishing , 2010 , Article)This research was conducted to improve titanium dioxide by transition metal doping using cooper. Sol gel method was used to prepare metal doped TiO 2. Titanium isopropoxide and commercial TiO2 P25 were employed as catalyst ... -
Investigation of thin-film composite hollow fiber forward osmosis membrane for osmotic concentration: A pilot-scale study
( Springer , 2022 , Article)The current study applied the forward osmosis (FO) based osmotic concentration (OC) process at the pilot-scale for concentrating synthetic feed solution (FS). The process water (PW) salinity represents effluents from the ... -
Investigation of three-phase capacitor-tapped multi-module voltage source converter with selective harmonic elimination
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)In conventional Two-Level Voltage Source Converters (2L-VSCs), connecting between high/medium dc voltage and medium/low ac voltage requires semiconductor devices rated at the high/medium dc-voltage, which negatively affects ... -
Investigation of Weather Impacts on Pedestrian Volumes
( Elsevier B.V. , 2016 , Conference Paper)This study investigates the impacts of temporal and weather characteristics on pedestrian volumes in a hot climate condition. A major neighborhood located in an urban area in Doha, Qatar was chosen as a case study site. ... -
Investigation of Zr-doped ceria for solar thermochemical valorization of CO2
( John Wiley and Sons Ltd , 2020 , Article)This study belongs to the estimation of the CO2 conversion ability of Ce1−xZr xO2 (CZ) materials performing multiple thermogravimetric CO2 splitting (CDS) cycles. By varying the molar concentrations of Zr in the range of ... -
Investigation on effective thermal conductivity and relative viscosity of cellulose nanocrystal as a nanofluidic thermal transport through a combined experimental - Statistical approach by using Response Surface Methodology
( Elsevier , 2017 , Article)Combined experimental-statistical approach for effective thermal conductivity and relative viscosity determination were investigated in this present study. Nanofluid used was dispersion of novel nanomaterial Cellulose ... -
Investigation on inlet obstruction in transitional flow regime: Heat transfer augmentation and pressure drop analysis
( Elsevier , 2022 , Article)Thermohydraulic characteristics of air as the working medium in a circular heated channel fitted with inlet obstruction (ribbed prism) at the inlet is carried out experimentally for transitional flow regime. The ribbed ...