Browsing College of Arts & Sciences by Publisher "Elsevier"
Now showing items 61-80 of 382
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Combined experimental and computational investigations of the fluorosolvatochromism of chromeno[4,3-b]pyridine derivatives: Effect of the methoxy substitution
( Elsevier , 2023 , Article)Extensive research has been conducted on the spectral properties of chromeno[4,3-b]pyridine derivatives, owing to their potential applications in sensing, optoelectronic devices, and drug discovery. This study presents a ... -
Complex-impedance response of an Ag/TeO2-V2O5/Ag structure
( Elsevier , 2009 , Article)The ac conductivity of glass samples of composition 50 mol% TeO2 and 50 mol% V2O5 has been analyzed. The samples were prepared by the usual melt-quench method. The electrical conductance and capacitance were measured over ... -
Compositional transformations in ion implanted polymers
( Elsevier , 2005 , Conference Paper)Changes of surface layer composition produced by ion bombardment of polyethylene and polypropylene samples were studied. These materials are under consideration for load bearing surfaces in biological and technical ... -
Comprehensive investigation of Er2O3 thin films grown with different ALD approaches
( Elsevier , 2022 , Article)The effect of Er precursor nature (Er(CpMe)3 or Er(tmhd)3) and annealing treatment at 500–1100 °C on the structural and optical properties of Er2O3 films grown on Si substrates by thermal or O2-plasma-assisted atomic layer ... -
Computation of conformal invariants
( Elsevier , 2020 , Article)We study numerical computation of conformal invariants of domains in the complex plane. In particular, we provide an algorithm for computing the conformal capacity of a condenser. The algorithm applies to a wide variety ... -
Concentrations of essential and toxic elements and health risk assessment in brown rice from Qatari market
( Elsevier , 2022 , Article)Twenty-two brown rice varieties available in the Qatari market were analyzed for essential and toxic elements by ICP-MS. Found concentrations (µg/kg) were: As: 171 ± 78 (62–343), Cd: 42 ± 60 (4–253), Cr: 515 ± 69 (401–639), ... -
Condenser capacity and hyperbolic diameter
( Elsevier , 2021 , Article)Given a compact connected set E in the unit disk B2, we give a new upper bound for the conformal capacity of the condenser (B2,E) in terms of the hyperbolic diameter t of E. Moreover, for t>0, we construct a set of hyperbolic ... -
Condenser capacity and hyperbolic perimeterImage 1
( Elsevier , 2021 , Article)We study the conformal capacity by using novel computational algorithms based on implementations of the fast multipole method, and analytic techniques. Especially, we apply domain functionals to study the capacities of ... -
Conducting polyaniline nanorods doped with aromatic carboxyl chain end functionalized polystyrene
( Elsevier , 2015 , Article)The preparation of new conducting polyaniline (PANI) derivatives with different nanostructures is described. PANI derivatives doped with aromatic carboxyl chain end functionalized polystyrene derivatives of different number ... -
Conformal capacity and polycircular domains
( Elsevier , 2023 , Article)We study numerical conformal mapping of multiply connected planar domains with boundaries consisting of unions of finitely many circular arcs, so called polycircular domains. We compute the conformal capacities of condensers ... -
Constituents of plants growing in Qatar
( Elsevier , 1986 , Article)N/A. -
Constituents of plants growing in qatar V. Constituents of the volatile oil of cymbopogon parkeri
( Elsevier , 1983 , Article)Analysis of the volatile oil of Cymbopogon parkeri has been carried out by capillary gas chromatography-mass spectrometry. To facilitate identification, prefractionation of the oil by adsorption high-performance liquid ... -
Controllable synthesis of sodium titanates using facile ball milling method
( Elsevier , 2021 , Article)In this study, we demonstrated a controllable synthesis of sodium titanates (Na2Ti6O13 and Na2Ti3O7) using simple mechanochemical (dry ball milling) method. Although the titanates were obtained after calcination, however, ... -
Corporate Choice between Conventional Bonds and Sukuk Issuance: Evidence from GCC Countries
( Elsevier , 2018 , Article)Although there have been recent developments in respect of the diversification of capital markets in GCC countries, the motivations of the firms issuing Sukuk or conventional bonds have remained largely unexplored. Using ... -
Corporate social responsibility in the oil and gas industry in Qatar perceptions and practices
( Elsevier , 2015 , Article)In the last few years, the state of Qatar paid a great attention to corporate social responsibility (CSR) to face a score of challenges namely sustainable development, globalization, governance, corporate sector impact, ... -
Corrigendum to "Investigations into structure-property relationships of novel Ru(II) dyes with N,N'-Diethyl group in ancillary ligand for dye-sensitized solar cells" [Dyes Pigments 171(2019) 107754-107762](S0143720819314639)(10.1016/j.dyepig.2019.107754)
( Elsevier , 2020 , Other)The authors regret the typos in the author names and affiliations. The authors would like to apologize for any inconvenience caused. Correction: The correct author names and affiliations should read as follows: Saba ... -
Corrigendum to "Microalgae: A potential bioagent for treatment of emerging contaminants from domestic wastewater" [Chemosphere 351, March 2024, 1-16 141245] (Chemosphere (2024) 351, (S0045653524001383), (10.1016/j.chemosphere.2024.141245))
( Elsevier , 2024 , Other)Authors would like an amendment in the Acknowledgement section as per our open access funder policies. Kindly add the below statement in acknowledgement section. <Acknowledgement: The authors would like to acknowledge the ... -
Cost estimation of synthesis and utilization of nano-adsorbents on the laboratory and industrial scales: A detailed review
( Elsevier , 2023 , Article Review)The recent regulations pertaining to the circular economy have unlocked new prospects for researchers. In contrast to the unsustainable models associated with the linear economy, integration of concepts of circular economy ... -
Crosslinked chitosan–montmorillonite composite and its magnetized counterpart for the removal of basic fuchsin from wastewater: Parametric optimization using Box-Behnken design
( Elsevier , 2024 , Article)Treating wastewater polluted with organic dyestuffs is still a challenge. In that vein, facile synthesis of a structurally simple composite of chitosan with montmorillonite (CS-MMT) using glutaraldehyde as a crosslinker ... -
Cry1Ac toxicity enhancement towards lepidopteran pest Ephestia kuehniella through its protection against excessive proteolysis
( Elsevier , 2016 , Article)Bacillus thuringiensis has been extensively used in agroecosystems for four decades due to its high specific toxicity. Strategies based on B. thuringiensis proteins combinations for the improvement of its activity present ...