Browsing Research Units by Title
Now showing items 1340-1359 of 4992
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Effect of graphene loading on thermomechanical properties of poly(vinyl alcohol)/starch blend
( Wiley Periodicals, Inc. , 2015 , Article)Polymer nanocomposites based on poly(vinyl alcohol) (PVA)/starch blend and graphene were prepared by solution mixing and casting. Glycerol was used as a plasticizer and added in the starch dispersion. The uniform dispersion ... -
The effect of graphene on the activation energy of grain growth for the nanocrystalline thermoelectric n-type Bi2Te2.7Se0.3
( Springer Nature , 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 ... -
The effect of graphene structural integrity on the power factor of tin selenide nanocomposite
( Elsevier , 2021 , Article)Tin selenide graphene nanocomposites (SnSe/GNPs) were fabricated with high-energy ball milling and hot pressing by varying the milling time of graphene. The effect of ball milling time on the graphene integrity and the ... -
Effect of halloysite nano tubes on the thermal degradation behaviour of PCL/PLA microfibrillar composites
( Elsevier , 2017 , Article)This paper reports on the thermal degradation behaviour and kinetics of halloysite nanotubes containing microfibrillated poly(ε-caprolactone) (PCL)/poly(lactic acid) (PLA) blends. It was found that the nanotubes probably ... -
Effect of halloysite nanotubes on the thermal degradation behaviour of poly(ε-caprolactone)/poly(lactic acid) microfibrillar composites
( Elsevier Ltd , 2017 , Article)This paper reports on the thermal degradation behaviour and kinetics of halloysite nanotubes containing microfibrillated poly(ε-caprolactone) (PCL)/poly(lactic acid) (PLA) blends. It was found that the nanotubes probably ... -
Effect of harvesting methods on the energy requirement of Tetraselmis sp. biomass production and biocrude yield and quality
( Elsevier Ltd , 2019 , Article)A halo-tolerant Tetraselmis sp. was grown in a 100,000 L raceway pond in the Qatari desert environment. As the biomass density reached 0.679 g/L, after 7 days, five different harvesting methods (i.e., cross-flow filtration, ... -
Effect of humidity on the electrical properties of the silver polyaniline/polyvinyl alcohol nanocomposites
( Elsevier B.V. , 2019 , Article)Polymer-metal nanocomposites with enhanced mechanical, optical, electrical, dielectric, and antimicrobial properties are currently in high demand for many industrial applications. Here, we study and present the effect of ... -
The Effect of ICT on CO2 Emissions in the GCC Countries: Does Globalization Matter?
( econjournals , 2022 , Article)Despite the significant impact of information and communication technologies (ICTs) on environment, whether globalization enhances the role of ICT in environmental quality is a question that received limited research ... -
Effect of illumination and applied potential on the electrochemical impedance spectra in triple cation (FA/MA/Cs) 3D and 2D/3D perovskite solar cells
( Elsevier , 2021 , Article)Even though there has been numerous works performed based on electrochemical impedance spectroscopy (EIS) of perovskite solar cells (PSCs), however, many aspects of the obtained EI spectra are yet to be fully grasped. ... -
Effect of Inconel625 particles on the microstructural, mechanical, and thermal properties of Al-Inconel625 composites
( Elsevier Ltd , 2020 , Article)This research work investigates the effect of concentration of Inconel625 particles on the microstructural, mechanical, and thermal properties of Al-Inconel625 composites. The Al-Inconel625 composites containing varying ... -
Effect of initial and final curing on performance of concrete in hot and arid climates
( Wiley-Blackwell , 2019 , Article)The effect of initial and final curing conditions of ordinary concrete cast in regions with harsh environmental conditions on the compressive strength and microstructure of concrete is investigated in this research. More ... -
Effect of layered silicates on the thermal stability of PCL/PLA microfibrillar composites
( Elsevier , 2016 , Article)This paper reports on an investigation of the influence of the presence of two different clays, Cloisite 15A and Cloisite 30B, and fibre drawing on the degradation behaviour and kinetics of PCL/PLA composites. It was ... -
Effect of Leaf Powdering Technique on the Characteristics of Date Palm-Derived Cellulose
( American Chemical Society , 2023 , Article)The date palm tree (Phoenix dactylifera L.) is the oldest cultivated tree and is very commonly seen in the Arab countries. In recent times, researchers are working on the conversion of the plant-based biowaste into value-added ... -
Effect of left atrial ligation-driven altered inflow hemodynamics on embryonic heart development: clues for prenatal progression of hypoplastic left heart syndrome.
( Springer , 2021 , Article)Congenital heart defects (CHDs) are abnormalities in the heart structure present at birth. One important condition is hypoplastic left heart syndrome (HLHS) where severely underdeveloped left ventricle (LV) cannot support ... -
Effect of membrane performance including fouling on cost optimization in brackish water desalination process
( Institution of Chemical Engineers , 2017 , Article)Membrane selection is a crucial step that will affect the economic feasibility of the membrane water treatment process. A comprehensive evaluation consisting of Verberne Cost Model, assessment of membrane performance and ... -
Effect of microwave sintering on the crystal domain and electrical properties of TiO2 nanoparticles
( Springer Netherlands , 2017 , Article)We report the effect of microwaves sintering on the crystal domain and electrical properties of TiO2 nanoparticles. Commercially available TiO2 nanoparticles of 25 nm size were coated on ITO (indium tin oxide) substrates, ... -
Effect of mRNA Vaccine Boosters against SARS-CoV-2 Omicron Infection in Qatar.
( Massachusetts Medical Society , 2022 , Article)Waning of vaccine protection against coronavirus disease 2019 (Covid-19) and the emergence of the omicron (or B.1.1.529) variant of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have led to expedited ... -
Effect of nanostructured polyhedral oligomeric silsesquioxane on the physical properties of poly(vinyl alcohol)
( John Wiley and Sons Inc. , 2017 , Article)An effective amphiphilic polyhedral oligomeric silsesquioxane (POSS) encapsulated poly(vinyl alcohol) (PVA) nanocomposite was successfully fabricated by solution blending method. Anionic octa(tetramethylammonium) (Octa-TMA) ... -
The Effect of New and Traditional Sources of Financing on the Performance of Small and Entrepreneurship Businesses: The Case of Qatar
( Taylor & Francis , 2023 , Article)Purpose: This paper investigates how entrepreneurial finance in Qatar affects the performance of small and entrepreneurship businesses (SEB). It is the first study examining the financial decisions of SEB in Qatar, ... -
The effect of novel nitrogen-based chalcone analogs on colorectal cancer cells: Insight into the molecular pathways
( Elsevier , 2024 , Article)In colorectal cancer (CRC), aberrations in KRAS are associated with aggressive tumorigenesis and an overall low survival rate because of chemoresistance and adverse effects. Ergo, complementary, and integrative medicines ...