تصفح Research Units حسب العنوان
السجلات المعروضة 3288 -- 3307 من 4858
-
Predictors of parental use of private tutoring in Qatar
( Common Ground Research Networks , 2020 , Article)The aim of this study was to identify the factors likely to influence parents' desire to use a private tutor for their children in the State of Qatar. Drawing on insights from the relevant literature, a survey questionnaire ... -
Preface
( Springer International Publishing , 2019 , Other)Since its foundation in 2018, Emergent Materials aimed to focus on evolving techniques/technologies for advanced materials in a wide variety of fields such as polymer science, composites, electronics, membranes, and ... -
Preface
( Springer Nature , 2022 , Other)A path for creating an advanced society is being paved with nanotechnology, which is a transformational path for Industry 4.0. It contributes benefits in many important domains, including medicine, energy, environmental ... -
Preface
( Institute of Physics , 2022 , Other)2022 2nd International Conference on Electron Devices and Applications was held virtually during May 13-15, 2022 via Zoom platform due to the pandemic of COVID-19. With a satisfactory ending of ICEDA 2021, ICEDA 2022 has ... -
Preface : Polymer Nanocomposites Containing Graphene Preparation, Properties, and Applications
( Elsevier , 2021 , Other)Nowadays, graphene-polymer composites are of great interest because of its practical application point of views. Hence, in this book, a discussion has been made on the different properties and applications of polymer-graphene ... -
Preface on "Nanomaterials for Energy Conversion and Storage Systems"
( Springer Nature , 2021 , Article)[No abstract available] -
Preface: Proceedings of the International Conference on Advanced Materials (ICAM2019)
( American Institute of Physics Inc. , 2019 , Article)[No abstract available] -
Preliminary Investigation of Heavy Metals in Deposited Dust on Roadside Sidr Leaves
( Qatar University Press , 2021 , Poster)Urban pollution has different forms; one of them is air pollution by natural sources such as dust storms or by anthropogenic sources such as traffic, whereas both are considered among the most risky environmental problems ... -
A preliminary study on microbial air contamination in select schools in Doha, Qatar
( Springer Nature , 2021 , Article)Available data of the indoor airborne culturable bacteria and fungi at schools’ environments is very limited in the peninsula of Qatar. This study aims to determine the microbial load in indoor and outdoor air at three ... -
Preparation and characterisation of Ce:YAG -polycarbonate composites for white LED
( Elsevier , 2016 , Article)Ce:YAG-polycarbonate composites were prepared with several amounts of Ce:YAG in the range 0.1–5 wt.% by using melt compounding. The structure and morphology of the composites were investigated by means of X-ray diffractometry ... -
Preparation and characterisation of Ce:YAG -polycarbonate composites for white LED.
( Elsevier , 2016 , Article)Ce:YAG-polycarbonate composites were prepared with several amounts of Ce:YAG in the range 0.1 e5 wt.% by using melt compounding. The structure and morphology of the composites were investigated by means of X-ray diffractometry ... -
Preparation and characterization of alumina HDPE composites
( MDPI AG , 2020 , Article)In this study, effects of two different types of porous alumina nanoparticles have been incorporated into high-density polyethylene (HDPE) to study their impact on the properties of the HDPE composite. The dispersion of ... -
Preparation and characterization of chemically synthesized polyaniline–polystyrene blends as a carbon dioxide gas sensor
( Elsevier , 2013 , Article)This correspondence presents a radically distinctive approach for preparing conducting polymer polyaniline–polystyrene (PANI–PS) blends doped with HCl by an in situ dispersion polymerization method. Generally, there are ... -
Preparation and characterization of EVA/PLA/sugarcane bagasse composites for water purification
( SAGE Publications , 2017 , Article)Poly(lactic acid)/ethylene vinyl acetate blends and poly(lactic acid)/ethylene vinyl acetate/sugarcane bagasse composites were prepared by melt mixing. The lower viscosity of poly(lactic acid), the lower interfacial tension ... -
Preparation and characterization of green graphene using grape seed extract for bioapplications
( Elsevier Ltd , 2016 , Article)The development of functionalized graphene materials concerning health and environmental aspects via green approaches is currently the most recent topic in the field of nanoscience and nanotechnology. Herein, we report the ... -
Preparation and characterization of new electrically conductive composites based on expanded graphite with potential use as remote environmental detectors
( MDPI AG , 2020 , Article)The presented paper is focused on studying electrically conductive composites based on an elastomeric matrix and expanded graphite as the filler. A potential application as an environmental remote detector was studied. The ... -
Preparation and characterization of urea-formaldehyde microcapsules filled with paraffin oil
( Springer Verlag , 2016 , Article)Paraffin oil was encapsulated in a urea–formaldehyde polymer shell by in situ polymerization. The effect of modifying the fabrication parameters, specifically the emulsifier, the core material concentration, the stirring ... -
Preparation and characterization of wollastonite/titanium oxide nanofiber bioceramic composite as a future implant material
( Elsevier , 2016 , Article)In this study, novel composites consisting of electrospun titanium dioxide (TiO2) nanofibers incorporated into high-purity wollastonite glass ceramics were prepared as materials for use in hard tissue engineering applications. ... -
Preparation and optical parameter characterization of two aldehyde derivative thin films for photonic applications by drop casting method
( John Wiley and Sons Ltd , 2020 , Article)In this study, thin films of polymer poly(methyl methacrylate) were prepared using a drop casting method. Two newly synthesized aldehyde derivatives, 2-bromomalonaldehyde and 5,6-dihydroimidazo[2,1-b]thiazole-2-carbaldehyde, ... -
Preparation and performance evaluation of speek/polyaniline composite membrane for direct methanol fuel cell
( Carl Hanser Verlag , 2017 , Article)Polymer composites comprising sulfonated poly(ether ether ketone) (SPEEK) and 10 to 50 wt% of Poly(trimellitic anhydride chloride-co-4,4'-methylenedianiline) (PTCMA) were prepared by solution casting. The effects of PTCMA ...
