Browsing College of Arts & Sciences by Title
Now showing items 12-31 of 3481
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A best proximity point theorem for special generalized proximal ?-quasi contractive mappings
( Springer , 2019 , Article)In this paper, we obtain some best proximity point results for a new class of non-self mappings T: A? B called special generalized proximal ?-quasi contractive. Our result is illustrated by an example. Several consequences ... -
A better understanding of seawater reverse osmosis brine: Characterizations, uses, and energy requirements
( Elsevier Ltd , 2021 , Article)Before investing in any optimizing technology for the recovery and reuse of brine resources, it is of importance to study the full physicochemical characteristics of the brine. In the current study, the physicochemical ... -
A boundary integral method for the general conjugation problem in multiply connected circle domains
( Springer International Publishing , 2018 , Article)We present a boundary integral method for solving a certain class of Riemann-Hilbert problems known as the general conjugation problem. The method is based on a uniquely solvable boundary integral equation with the generalized ... -
A brief self-rating scale for the assessment of individual differences in gesture perception and production
( Elsevier , 2015 , Article)Gesture production and perception have a strong impact on speech perception and social-communicative functioning. Consequently, we created the 'Brief Assessment of Gesture' (BAG) tool, a set of 12 subjective statements ... -
A Case Study of Qatar: Health Risk Assessment associated with Bisphenol A
( Qatar University Press , 2021 , Poster)This study is aimed at evaluating exposure to bisphenol A in drinkable water. Much studies have not been conducted on Bisphenol A in the drinkable water globally, in Arabian Gulf and particularly in Qatar. This assessment ... -
A Chaotic Quadratic Bistable Hyperjerk System with Hidden Attractors and a Wide Range of Sample Entropy: Impulsive Stabilization
( World Scientific , 2021 , Article)Hidden attractors generated by the interactions of dynamical variables may have no equilibrium point in their basin of attraction. They have grabbed the attention of mathematicians who investigate strange attractors. ... -
A Class of Koszul Algebra and Some Homological Invariants through Circulant Matrices and Cycles
( Hindawi Limited , 2022 , Article)Recent advances in graph theory, linear algebra, and commutative algebra render us to tackle problems in one bough of mathematics with assistance and guidance from others. We will elaborate foremost and conceptually ... -
A comparative baseline of coral disease in three regions along the Saudi Arabian coast of the central Red Sea
( Public Library of Science , 2021 , Article)Coral disease is a growing problem for coral reefs globally and diseases have been linked to thermal stress, excess nutrients, overfishing and other human impacts. The Red Sea is a unique environment for corals with a ... -
A comparative physicochemical property assessment and techno-economic analysis of biolubricants produced using chemical modification and additive-based routes
( Elsevier , 2022 , Article)Several edible and non-edible oil sources are currently being developed as renewable basestocks for biolubricant production. However, these feedstocks possess undesirable physicochemical properties limiting their lubricant ... -
A comparative review of natural and synthetic biopolymer composite scaffolds
( MDPI AG , 2021 , Article Review)Tissue engineering (TE) and regenerative medicine integrate information and technology from various fields to restore/replace tissues and damaged organs for medical treatments. To achieve this, scaffolds act as delivery ... -
A comparative study of chemically reacting 2D flow of Casson and Maxwell fluids
( Elsevier B.V. , 2018 , Article)Theoretical investigation is performed to discuss the heat and mass transfer behavior of chemically reacting magnetohydrodynamic Casson and Maxwell fluids past a stretching sheet with Brownian moment and thermophoresis ... -
A comparison of the Ranging behaviour and habitat use of the Ethiopian hedgehog (Paraechinus aethiopicus) in Qatar with hedgehog taxa from temperate environments
( NaturePublishingGroup , 2018 , Article)We investigated seasonal changes in the ecology and behaviour of the Ethiopian hedgehog (Paraechinus aethiopicus) in Qatar, particularly in respect to differences in behaviour between hedgehogs living in arid environments ... -
A complete sequence of the 16S rRNA gene of a novel Streptomyces coelicolor (AB588124) (QU66c-2002) isolated from the soil of Qatar
( Asian Network for Scientific Information , 2011 , Article)The aim of this study was to determine the sequence of the 16S rRNA gene and thus to conduct the phylogenic position of the naturally occurring wild type strain of Streptomyces QU66C. Here we show conclusively the full ... -
A comprehensive review summarizing the recent biomedical applications of functionalized carbon nanofibers
( John Wiley and Sons Inc , 2021 , Article)Since the discovery and fabrication of carbon nanofibers (CNFs) over a decade ago, scientists foster to discover novel myriad potential applications for this material in both biomedicine and industry. The unique economic ... -
A computational study on molecular structure and stability of tautomers of dipyrrole-based phenanthroline analogue
( Elsevier B.V. , 2018 , Article)This work reports structure and stability of different tautomers of a newly-designed analogue of 1,10-phenanthroline-5,6-dione (the di-keto structure (DK) derived from 1H,8H-pyrrolo[3,2-g]indole (PI)) using quantum chemical ... -
A Concubine in Early-Modern Egypt: The Example of Nafisa Khatun al-Muradiyya
( Brill Academic Publishers , 2016 , Article)This article portrays the life of Al-Sit Nafisa Khatun al-Muradiyya, originally taken captive in Georgia and sold into slavery in Cairo, who rises from life as a concubine to become the wife of the Mamluk leader Murad Bey ... -
A Cross-Coupling Approach to Amide Bond Formation from Esters
( American Chemical Society , 2017 , Article)A palladium-catalyzed cross-coupling between aryl esters and anilines is reported, enabling access to diverse amides. The reaction takes place via activation of the C-O bond by oxidative addition with a Pd-NHC complex, ... -
A discussion on generalized almost contractions via rational expressions in partially ordered metric spaces
( Springer International Publishing , 2014 , Article)The main purpose of this paper is to give some fixed point results for mappings involving generalized (Formula presented.)-contractions in partially ordered metric spaces. Our results generalize, extend, and unify several ... -
A disease-modifying treatment for Alzheimer's disease: Focus on the trans-sulfuration pathway
( De Gruyter , 2019 , Article)High homocysteine levels in Alzheimer's disease (AD) result from low activity of the trans-sulfuration pathway. Glutathione levels are also low in AD. L-cysteine is required for the synthesis of glutathione. The synthesis ... -
A facile biliquid-interface co-assembly synthesis of mesoporous vesicles with large pore sizes
( Royal Society of Chemistry , 2016 , Article)In this study, novel mesoporous siliceous vesicles with ultrathin walls (50 nm in thickness) and large cavities were synthesized through a facile biliquid-interface co-assembly method by using cetyltrimethylammonium bromide ...