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Interaction properties of solitons for a couple of nonlinear evolution equations

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Chinese Physics B 2021年第1期30卷 185-190页

作者： syed Tahir Raza Rizvi Ishrat Bibi Muhammad Younis Ahmet Bekir Department of Mathematics COMSATS University IslamabadLahore CampusPakistan Punjab University College of Information Technology University of the PunjabLahorePakistan Neighbourhood of Akcaglan Imarli Street Number 28/426030EskisehirTurkey

We study one-and two-soliton solutions for the Cahn–Allen(CA) equation and the Brethorton equation. The CA equation has broad spectrum of applications especially in anti-phase boundary motion and it is used in phase-field *** the Brethorton equation is a model for dispersive wave systems, it is used to find the resonant nonlinear interaction among three linear modes. We use the Hirota bilinear method to obtain one-and two-soliton solutions to the CA equation and the Brethorton equation.

关键词： Hirota bilinear method soliton interaction evolution equations

Letter to editor‘prognostic significance of hepatic encephalopathy in patients with cirrhosis treated with Rifaxamin’

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World Journal of Gastroenterology 2020年第44期26卷 7085-7087页

作者： Amera Elzubeir syed Munawer Alam Department of Gastroenterology Norfolk and Norwich University HospitalNorwich NR46AYNorfolkUnited Kingdom

The present letter to editor is related to Bohra A et al Prognostic significance of hepatic encephalopathy in patients with cirrhosis treated with current standards of *** J Gastroenterol 2020;26(18):*** encephalopathy(HE)is a significant and frequent major decompensating event in *** clinical studies examining the clinical outcome of HE are lacking despite its high prevalence.

关键词： Hepatic encephalopathy Cirrhosis Rifaxamin Portal hypertension Acute on chronic liver failure Prognosis

Zr-pillared montmorillonite supported cobalt nanoparticles for Fischer–Tropsch synthesis

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Progress in Natural Science:Materials International 2013年第4期23卷 374-381页

作者： Nisar Ahmad syed Tajammul Hussain Bakhtiar Muhammad Nisar Ali syed Mustansar Abbas Zulfqar Ali Department of Chemistry Hazara University Nano Science and Catalysis Division National Centre for PhysicsQAU CampusIslamabadPakistan Department of Physics University of the Punjab CEES University of the Punjab

In this article Fischer–Tropsch(FT) synthesis was studied over cobalt nanoparticles supported on modifed Montmorillonite(Zr-PILC).Co-loaded/Zr-PILC catalysts were synthesized by hydrothermal methods and were characterized by XRD,XRF,BET,H2-TPR,TGA and SEM *** reactions were carried out in fxed bed microreactor(T 225 1C,260 1C and 275 1C,P 1,5 and 10 bars).The FT-products obtained over Co-loaded/Zr-PILC catalysts showed increased selectivity of C2–C12hydrocarbons and decreased selectivity towards CH4and higher molecular weight hydrocarbons(C21) at a TOS of 2–30 h as compared to the Co-loaded/NaMMT *** increase in reaction temperature from225 1C to 275 1C,CO-conversion and CH4selectivity increases while that of C5+hydrocarbons *** in CH4selectivity while increase in C5+hydrocarbons and CO-conversion were observed on increasing the pressure of reaction.

关键词： Fischer–Tropsch synthesis Montmorillonite Cobalt Zirconium pillared clay

Arresting kinase suppressor of Ras in an inactive state

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Chinese Journal of Cancer 2017年第1期36卷 8-10页

作者： syed Lal Badshah Yahia Mabkhot Department of Chemistry Islamia College University PeshawarPeshawarKhyber Pukhtoonkhwa 25120Pakistan Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

Ras protein signaling pathways are important in controlling the plight of diferent types of cancer. Here we discussed the paper entitled "Small molecule stabilization of the KSR inactive state antagonizes oncogenic Ras signalling" published in Nature journal on inactivating the kinase suppressor of Ras(KSR) protein using a small molecule as an inhibitor by Dhawan et al. A biphenyl ether analogue of a quinazoline binds in one of the binding pockets of KSR and results in stabilization of its inactive state. In this inactive state, KSR is unable to take part in the cascade of protein association to perform the signalling process.

关键词： Ras Cancer Quinazoline analogues Structure–activity relationship Kinase inhibitors

High surface area and mesoporous activated carbon from KOH-activated dragon fruit peels for methylene blue dye adsorption:Optimization and mechanism study

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Chinese Journal of Chemical Engineering 2021年第4期34卷 281-290页

作者： Ali H.Jawad Ahmed Saud Abdulhameed Lee D.Wilson syed Shatir A.syed-Hassan Zeid A.ALOthman Mohammad Rizwan Khan Faculty of Applied Sciences Universiti Teknologi MARA40450 Shah AlamSelangorMalaysia Department of Medical Instrumentation Engineering Al-Mansour University CollegeBaghdadIraq Department of Chemistry University of SaskatchewanSaskatoonSaskatchewan S7N 5C9 Canada Faculty of Chemical Engineering Universiti Teknologi MARA40450 Shah AlamSelangorMalaysia Chemistry Department College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

In this study,an alternative precursor for production of activated carbon was introduced using dragon fruit(Hylocereus costaricensis)peel(DFP).Moreover,KOH was used as a chemical activator in the thermal carbonization process to convert DFP into activated carbon(DFPAC).In order to accomplish this research,several approaches were employed to examine the elemental composition,surface properties,amorphous and crystalline nature,essential active group,and surface morphology of the *** BrunauerEmmettTeller test demonstrated a mesoporous structure of the DFPAC has a high surface area of 756.3 m2g *** cationic dye Methylene Blue(MB)was used as a probe to assess the efficiency of DFPAC towards the removal of MB dye from aqueous *** effects of adsorption input factors(*** dose(A:0.040.12 g L 1),pH(B:310),and temperature(C:3050℃))were investigated and optimized using statistical analysis(*** design(BBD)).The adsorption kinetic model can be best categorized as the pseudofirst order(PFO).Whereas,the adsorption isotherm model can be best described by Langmuir model,with maximum adsorption capacity of DFPAC for MB dye was 195.2 mg g 1 at 50℃.The adsorption mechanism of MB by DFPAC surface was attributed to the electrostatic interaction,pp interaction,and ***,the results support the ability of DFP to be a promising precursor for production of highly porous activated carbon suitable for removal of cationic dyes(***).

关键词： Statistical modeling Activated carbon Dragon fruit peels Box-Behnken design Methylene blue dye Adsorption

Current updates on the epidemiology,pathogenesis and development of small molecule therapeutics for the treatment of Ebola virus infections

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Asian Pacific Journal of Tropical Medicine 2024年第7期17卷 285-298,I0001-I0007页

作者： Shah Alam Khan Neelima Shrivastava MdJawaid Akhtar Aftab Ahmad Asif husain Department of Pharmaceutical Chemistry College of PharmacyNational University of Science and TechnologyPO Box 620Postal code 130MuscatSultanate of Oman Centre of Molecular Medicine and Diagnostics(COMMAND) Saveetha Dental College&HospitalsSaveetha Institute of Medical&Technical SciencesSaveetha UniversityChennai 600077India Department of Pharmaceutical Chemistry School of Pharmaceutical Education and ResearchJamia HamdardNew Delhi-110062India Department of Health Information Technology the Applied CollegeKing Abdulaziz UniversityJeddah-21589Kingdom of Saudi Arabia

Ebola virus disease(EVD)is a rare,highly contagious and a deadly disease with a variable fatality rate ranging from 30%to 90%.Over the past two decades,Ebola pandemic has severely affected the sub-Sahara region including Democratic Republic of the Congo(DRC),and *** causative agents of the most EVD cases are three distinct species out of six Ebolaviruses namely Zaire Ebolavirus(ZEBOV),Sudan Ebolavirus(SUDV)and Bundibugyo Ebolavirus(BDBV).In recent years,significant strides have been made in therapeutic ***,the US Food and Drug Administration has approved two monoclonal antibodies:InmazebTM(REGN-EB3)and Ansuvimab or ***,many small molecules are currently in the developmental stage,promising further progress in medical *** the critical need for preventive measures,this review provides an in-depth analysis of the licensed Ebola vaccines-Ervebo and the combination of Zabdeno(***)and Mvabea(MVA-BN-Filo)as well as the vaccines which are currently being tested for their efficacy and safety in clinical *** vaccines might play an important role in curbing the spread and mitigating the impact of this lethal *** current treatment landscape for EVD encompasses both nutritional(supportive)and drug *** review comprehensively details the origin,pathogenesis,and epidemiology of EVD,shedding light on the ongoing efforts to combat this devastating *** explores small molecules in various stages of the development,discusses patents filed or granted,and delves into the clinical and supportive therapies that form the cornerstone of EVD *** review aims to provide the recent developments made in the design and synthesis of small molecules for scientific community to facilitate a deeper understanding of the disease and fostering the development of effective strategies for prevention,treatment,and control of EVD.

关键词： Ebola Epidemic Vaccine Ebola virus diseas

Development of a Bias Compensating Q-Learning Controller for a Multi-Zone HVAC Facility

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IEEE/CAA Journal of Automatica Sinica 2023年第8期10卷 1704-1715页

作者： syed Ali Asad Rizvi Amanda J.Pertzborn Zongli Lin IEEE the Department of Electrical and Computer Engineering Tennessee Technological UniversityCookevilleTN 38505 USA the Mechanical Systems and Controls Group in the Building Energy and Environment Division at the National Institute of Standards and Technology(NIST) GaithersburgMD 20899 USA the Charles L.Brown Department of Electrical and Computer Engineering University of VirginiaCharlottesvilleVA 22904-4743 USA

We present the development of a bias compensating reinforcement learning(RL)algorithm that optimizes thermal comfort(by minimizing tracking error)and control utilization(by penalizing setpoint deviations)in a multi-zone heating,ventilation,and air-conditioning(HVAC)lab facility subject to unmeasurable disturbances and unknown *** is shown that the presence of unmeasurable disturbance results in an inconsistent learning equation in traditional RL controllers leading to parameter estimation bias(even with integral action support),and in the extreme case,the divergence of the learning *** demonstrate this issue by applying the popular Q-learning algorithm to linear quadratic regulation(LQR)of a multi-zone HVAC environment and showing that,even with integral support,the algorithm exhibits bias issue during the learning phase when the HVAC disturbance is unmeasurable due to unknown heat gains,occupancy variations,light sources,and outside weather *** address this difficulty,we present a bias compensating learning equation that learns a lumped bias term as a result of disturbances(and possibly other sources)in conjunction with the optimal control *** results show that the proposed scheme not only recovers the bias-free optimal control parameters but it does so without explicitly learning the dynamic model or estimating the disturbances,demonstrating the effectiveness of the algorithm in addressing the above challenges.

关键词： HVAC control optimal tracking Q-learning reinforcement learning(RL)

Intelligent approach of score-based artificial fish swarm algorithm(SAFSA)for Parkinson’s disease diagnosis

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International Journal of Intelligent Computing and Cybernetics 2022年第4期15卷 540-561页

作者： syed Haroon Abdul Gafoor Padma Theagarajan Bharathiar University CoimbatoreIndia Department of Computer Applications Sona College of TechnologySalemIndia

Purpose-Conventional diagnostic techniques,on the other hand,may be prone to subjectivity since they depend on assessment of motions that are often subtle to individual eyes and hence hard to classify,potentially resulting in ***,early nonmotor signs of Parkinson’s disease(PD)can be mild and may be due to variety of other *** a result,these signs are usually ignored,making early PD diagnosis *** learning approaches for PD classification and healthy controls or individuals with similar medical symptoms have been introduced to solve these problems and to enhance the diagnostic and assessment processes of PD(like,movement disorders or other Parkinsonian syndromes).Design/methodology/approach-Medical observations and evaluation of medical symptoms,including characterization of a wide range of motor indications,are commonly used to diagnose *** quantity of the data being processed has grown in the last five years;feature selection has become a prerequisite before any *** study introduces a feature selection method based on the score-based artificial fish swarm algorithm(SAFSA)to overcome this ***-This study adds to the accuracy of PD identification by reducing the amount of chosen vocal features while to use the most recent and largest publicly accessible *** subset selection in PD detection techniques starts by eliminating features that are not relevant or *** to a few objective functions,features subset chosen should provide the best *** limitations/implications-In many situations,this is an Nondeterministic Polynomial Time(NPHard)*** method enhances the PD detection rate by selecting the most essential features from the *** begin,the data set’s dimensionality is reduced using Singular Value Decomposition dimensionality ***,Biogeography-Based Optimization(BBO)for feature selection;the weight value is a vital parameter for find

关键词： Parkinson disease dysphonia features Feature subset selection Score-based artificial fish swarm algorithm(SAFSA) Singular value decomposition(SVD) Classification

On Vertex-Edge-Degree Topological Descriptors for Certain Crystal Networks

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Computer Systems Science & Engineering 2022年第3期40卷 835-850页

作者： Sadia husain Fouad A.Abolaban Ali Ahmad Muhammad Ahsan Asim Yasir Ahmad College of Computer Sciences and Information Technology Jazan UniversitySaudi Arabia King Abdulaziz University College of EngineeringNuclear Engineering DepartmentJeddah21589Saudi Arabia

Due to the combinatorial nature of graphs they are used easily in pure sciences and social *** dynamical arrangement of vertices and their associated edges make them flexible(like liquid)to attain the shape of any physical structure or phenomenon *** the field of ICT they are used to reflect distributed component and communication among *** chemistry is another interesting domain of applied mathematics that endeavors to display the structure of compounds that are formed in result of chemical *** area attracts the researchers due to its applications in theoretical and organic *** also inspires the mathematicians due to involvement of mathematical *** or irregular bonding ability of molecules and their formation of chemical compounds can be analyzed using atomic valences(vertex degrees).Pictorial representation of these compounds helps in identifying their properties by computing different graph invariants that is really considered as an application of graph *** paper reflects the work on topological indices such as ev-degree Zagreb index,the first ve-degree Zagrebindex,the first ve-degree Zagrebindex,the second ve-degree Zagreb index,ve-degree Randic index,the ev-degree Randic index,the ve-degree atom-bond connectivity index,the ve-degree geometric-arithmetic index,the ve-degree harmonic index and the ve-degree sum-connectivity index for crystal structural networks namely,bismuth tri-iodide and lead *** this article we have determine the exact values of ve-degree and ev-degree based topological descriptors for crystal networks.

关键词： ev-degree ve-degree topological indices crystal networks