College of Arts & Sciences: Recent submissions
Now showing items 521-540 of 3643
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Biodegradable polysaccharide grafted polyacrylamide inhibitor for corrosion in CO2- saturated saline solution
( Elsevier , 2023 , Article)A biodegradable polysaccharide-based inhibitor is grafted with polyacrylamide (PAM) for oilfields’ sweet corrosion. The green properties of agar and PAM were incorporated to synthesize an agar-grafted-PAM (AGGPAM) inhibitor. ... -
Spectral-based optimal output-feedback boundary control of a cracking catalytic reactor PDE model
( Taylor and Francis Ltd. , 2024 , Article)This research paper focuses on the design of a boundary optimal controller with output feedback for a tubular catalytic cracking reactor. The process is represented by a set of non-linear parabolic partial differential ... -
Boundary Output-Feedback Regulation of a Catalytic Cracking Reactor
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Conference)This work focuses on the design of a boundary output feedback regulator for a catalytic cracking reactor model which can be represented by a set of partial differential equations (PDEs). Based on the linear abstract ... -
Error-feedback regulation of a distributed parameter cracking process by using a spectral approach
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Conference)The paper focuses on controlling a distributed parameter cracking process using state and error feedback regulators. The principal aim is to accomplish tracking of a desired output while effectively managing disturbances ... -
Optimal output-feedback temperature regulation of a catalytic reverse flow reactor PDEs model
( Elsevier , 2021 , Article)In this work, control and estimation problems have been studied for a catalytic reversal flow reactor (CFRR). A stabilizing compensator is developed on the basis of the infinite-dimensional state-space description of the ... -
Infinite-dimensional LQ optimal control of a dimethyl ether (DME) catalytic distillation column
( Elsevier , 2012 , Article)This contribution addresses the development of a linear quadratic (LQ) regulator in order to control the concentration profiles along a catalytic distillation column, which is modelled by a set of coupled hyperbolic partial ... -
Boundary optimal (LQ) control of coupled hyperbolic PDEs and ODEs
( Elsevier , 2013 , Article)This contribution addresses the development of a linear quadratic (LQ) regulator for a set of hyperbolic PDEs coupled with a set of ODEs through the boundary. The approach is based on an infinite-dimensional Hilbert ... -
Optimal control and duality-based observer design for a hyperbolic PDEs system with application to fixed-bed reactor
( Taylor and Francis Ltd. , 2021 , Article)This paper is devoted to the design of an optimal infinite-dimensional Luenberger observer combined with a linear-quadratic state feedback controller for a system of hyperbolic PDEs. The design is based on the duality fact ... -
مستقبل تدريس علوم الإعلام والاتصال في ضوء المستجدات التكنولوجية والمجتمعية "رؤية استشرافية في ضوء إطار جامعة قطر للتميز في التعليم".
( الجمعية السعودية للإعلام و الاتصال , 2024 , Article)في ضوء التحديات التي تفرضها التطورات التكنولوجية المتلاحقة على أطراف العملية التعليمية: المعلم، والمتعلم، وبيئة التعلم، وبخاصة في ظل التغيرات التي جلبتها جائحة كورونا (كوفيد-19) على هذا الصعيد، تسعى هذه الدراسة إلى مقاربة ... -
The Ligon lintless-2 Short Fiber Mutation Is Located within a Terminal Deletion of Chromosome 18 in Cotton<sup>1</sup>
( American Society of Plant Biologists , 2020 , Article)Extreme elongation distinguishes about one-fourth of cotton (Gossypium sp.) seed epidermal cells as “lint” fibers, useful for the textile industry, from “fuzz” fibers (,5 mm). Ligon lintless-2 (Li2), a dominant mutation ... -
Genetic analysis of QTLs controlling allelopathic characteristics in sorghum
( Public Library of Science , 2020 , Article)Mature sorghum herbage is known to contain several water-soluble secondary metabolites (allelochemicals). In this study, we investigated quantitative trait loci (QTLs) associated with allelochemical characteristics in ... -
Aquaculture from inland fish cultivation to wastewater treatment: a review
( Springer Nature , 2023 , Article)The aquaculture industry is rapidly developing, generating a high amount of wastewater. Inland aquaculture effluents contain nutrients and other substances that can cause eutrophication and the emergence of resistive ... -
The explicit eigenvalues and eigenfunctions of the generalized neumann kernel in annular domains
( Universiti Putra Malaysia , 2019 , Article)This paper presents the explicit forms of the eigenvalues of the general-ized Neumann kernel in annular domains and the explicit forms of the corresponding eigenfunctions. It follows from these explicit forms that, except ... -
PlgCirMap: A MATLAB toolbox for computing conformal mappings from polygonal multiply connected domains onto circular domains
( Elsevier , 2020 , Article)This paper presents a MATLAB toolbox for computing the conformal mapping from a given polygonal multiply connected domain onto a circular multiply connected domain and its inverse. The toolbox can be used for multiply ... -
Application of integral equations to simulating local fields in carbon nanotube reinforced composites
( Elsevier , 2020 , Book chapter)We consider the steady heat conduction problem within a thermal isotropic and homogeneous square ring composite reinforced by nonoverlapping and randomly distributed carbon nanotubes (CNTs). We treat the CNTs as rigid line ... -
Microalgae: A potential bioagent for treatment of emerging contaminants from domestic wastewater
( Elsevier , 2024 , Article)Water crisis around the world leads to a growing interest in emerging contaminants (ECs) that can affect human health and the environment. Research showed that thousands of compounds from domestic consumers, such as endocrine ... -
The Potential of Marine Microalgae for the Production of Food, Feed, and Fuel (3F)
( Multidisciplinary Digital Publishing Institute (MDPI) , 2022 , Article)Whole-cell microalgae biomass and their specific metabolites are excellent sources of renewable and alternative feedstock for various products. In most cases, the content and quality of whole-cell biomass or specific ... -
The motion of a point vortex in multiply-connected polygonal domains
( Multidisciplinary Digital Publishing Institute (MDPI) , 2020 , Article)We study the motion of a single point vortex in simply-and multiply-connected polygonal domains. In the case of multiply-connected domains, the polygonal obstacles can be viewed as the cross-sections of 3D polygonal ... -
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 ... -
Level sets of potential functions bisecting unbounded quadrilaterals
( Springer Nature , 2022 , Article)We study the mixed Dirichlet–Neumann problem for the Laplace equation in the complement of a bounded convex polygonal quadrilateral in the extended complex plane. The Dirichlet / Neumann conditions at opposite pairs of ...
