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Nano-Micro Letters 2021年第8期13卷 13-27页

作者： Quan Zong Wei Du Chaofeng Liu Hui Yang Qilong Zhang Zheng Zhou Muhammad atif Mohamad Alsalhi Guozhong Cao Department of Materials Science and Engineering University of WashingtonSeattleWA 98195USA School of Materials Science and Engineering State Key Lab Silicon MatZhejiang UniversityHangzhou 310027People’s Republic of China Research Chair On Laser Diagnosis of Cancers Department of Physics and AstronomyCollege of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia Department of Physics and Astronomy College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

Ammonium vanadate with bronze structure(NH_(4)V_(4)O_(10))is a promising cathode material for zinc-ion batteries due to its high specific capacity and low ***,the extraction of NH^(+)_(4) at a high voltage during charge/discharge processes leads to irreversible reaction and structure *** this work,partial NH^(+)_(4) ions were pre-removed from NH_(4)V_(4)O_(10) through heat treatment;NH_(4)V_(4)O_(10) nanosheets were directly grown on carbon cloth through hydrothermal ***-cient NH_(4)V_(4)O_(10)(denoted as NVO),with enlarged interlayer spacing,facilitated fast zinc ions transport and high storage capacity and ensured the highly reversible electrochemical reaction and the good stability of layered *** NVO nanosheets delivered a high specific capac-ity of 457 mAh g^(−1) at a current density of 100 mA g^(−1) and a capacity retention of 81%over 1000 cycles at 2 A g^(−1).The initial Coulombic efficiency of NVO could reach up to 97%compared to 85%of NH_(4)V_(4)O_(10) and maintain almost 100%during cycling,indicating the high reaction reversibility in NVO electrode.

关键词： Deficient ammonium vanadate Large interlayer spacing Reversible redox reaction Electrochemical mechanism

Offshore Software Maintenance Outsourcing Process Model Validation:A Case Study Approach

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Computers, Materials & Continua 2023年第3期74卷 5035-5048页

作者： atif Ikram Masita Abdul Jalil Amir Bin Ngah Adel Sulaiman Muhammad Akram Ahmad Salman Khan Faculty of Ocean Engineering Technology and Informatics University Malaysia TerengganuKuala TerengganuMalaysia Department of Computer Science&Information Technology Faculty of Information TechnologyThe University of LahoreLahore54000Pakistan Department of Computer Science College of Computer Science and Information SystemsNajran UniversityNajranSaudi Arabia Department of Software Engineering Faculty of Information TechnologyThe University of LahoreLahore54000Pakistan

The successful execution and management of Offshore Software Maintenance Outsourcing(OSMO)can be very beneficial for OSMO vendors and the OSMO *** a lot of research on software outsourcing is going on,most of the existing literature on offshore outsourcing deals with the outsourcing of software development *** frameworks have been developed focusing on guiding software systemmanagers concerning offshore software ***,none of these studies delivered comprehensive guidelines for managing the whole process of *** is a considerable lack of research working on managing OSMO from a vendor’s ***,to find the best practices for managing an OSMO process,it is necessary to further investigate such complex and multifaceted phenomena from the vendor’s *** study validated the preliminary OSMO process model via a case study research *** results showed that the OSMO process model is applicable in an industrial setting with few *** industrial data collected during the case study enabled this paper to extend the preliminary OSMO process *** refined version of the OSMO processmodel has four major phases including(i)Project Assessment,(ii)SLA(iii)Execution,and(iv)Risk.

关键词： Offshore outsourcing process model model validation vendor challenges case study

Ultrathin organic polymer with p-πconjugated structure for simultaneous photocatalytic disulfide bond generation and CO_(2)reduction

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Journal of Energy Chemistry 2023年第1期76卷 639-647,I0016页

作者： Linquan Hou Zhunyun Tang Guojiang Mao Shiheng Yin Bei Long Tao Ouyang Guo-Jun Deng atif Ali Ting Song Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of EducationCollege of ChemistryXiangtan UniversityXiangtan 411105HunanChina Hunan Key Laboratory for Micro-Nano Energy Materials and Device School of Physics and OptoelectronicsXiangtan UniversityXiangtan 411105HunanChina School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007HenanChina Analytical and Testing Center South China University of TechnologyGuangzhou 510640GuangdongChina Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong KongPokfulam RoadHong Kong 999077China

Combining photocatalytic organic reactions with CO_(2)reduction is an efficient solar energy utilization mode,but it is still limited by the organic species that can be matched and the low ***,ultrathin organic polymer with p-πconjugated structure(TPP)was rationally designed and prepared,and showed a high yield of CO(15.2 mmol g^(-1))and conversion of SAS coupled products(100%),far exceeding the organic polymer with P=O *** enhanced photoredox activity of TPP is ascribed to the orbital interaction between the p-orbital on phosphorus and theπ-orbitals of aromatic,which can accelerate the photoinduced charge carrier separation and improve the CO_(2)adsorption *** can also be used for the dehydrocoupling of various benzyl mercaptans to the corresponding SAS bond *** work provides a new concept for the efficient synthesis of disulfide bonds combined with CO_(2)reduction in a photoreaction system.

关键词： Photocatalytic coupled reaction Disulfide bond CO_(2)reduction High activity Organic polymer

Efficient Cloud Resource Scheduling with an Optimized Throttled Load Balancing Approach

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Computers, Materials & Continua 2023年第11期77卷 2179-2188页

作者： V.Dhilip Kumar J.Praveenchandar Muhammad Arif Adrian Brezulianu Oana Geman atif Ikram Department of Computer Science and Engineering Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and TechnologyChennai600062India Department of Computer Science and Engineering Karunya Institute of Technology and SciencesCoimbatoreTamil Nadu641114India Department of Computer Science Superior UniversityLahorePakistan Faculty of Electronics Telecommunications and Information Technology Gheorghe Asachi Technical University of IasiIa¸si700050Romania Department of Health and Human Development Stefan cel Mare University of SuceavaSuceava720229Romania Faculty of Ocean Engineering Technology and Informatics University Malaysia TerengganuKuala NerusMalaysia

Cloud Technology is a new platform that offers on-demand computing Peripheral such as storage,processing power,and other computer system *** is also referred to as a system that will let the consumers utilize computational resources like databases,servers,storage,and intelligence over the *** a cloud network,load balancing is the process of dividing network traffic among a cluster of available servers to increase *** is also known as a server pool or server *** a single node is overwhelmed,balancing the workload is needed to manage unpredictable *** load balancer sends the load to another free node in this *** focus on the Balancing of workflows with the proposed approach,and we present a novel method to balance the load that manages the dynamic scheduling *** of the preexisting load balancing techniques is considered,however it is somewhat modified to fit the scenario at *** on the experimentation’s findings,it is concluded that this suggested approach improves load balancing consistency,response time,and throughput by 6%.

关键词： Load balancing throttled algorithm efficient resource allocation

General Solution for Unsteady Natural Convection Flow with Heat and Mass in the Presence of Wall Slip and Ramped Wall Temperature

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Communications in Theoretical Physics 2019年第6期71卷 647-657页

作者： Saeed Ullah Jan Sami Ul Haq Syed Inayat Ali Shah Ilyas Khan Muhammad atif Khan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh CityVietnam Department of Mathematics Islamia College UniversityPeshawar25000Pakistan Department of Mathematics Kohat University of Science&TechnologyKohat26000Pakistan

This work is focused on the effect of heat and mass transfer with unsteady natural convection flow of viscous fluid along with ramped wall temperature under the assumption of the slip wall condition at the boundary. Analytical solutions are obtained by using Laplace transformation to the non-dimensional set of governing equations containing velocity, temperature and concentration. Moreover, the expression for skin-friction is derived by differentiating the analytical solutions of fluid velocity. Numerical tables for Skin-friction, Sherwood number and Nusselt-number are examined. For the physical aspects of the flow, we use various values of involved physical parameters such as Prandtl number(Pr), slip parameter(η), Schmidt number(Sc), buoyancy ratio parameter(N), Sherwood number(Sh), and time(t). Additionally, the general solutions are plotted graphically and a comprehensive theoretical section of numerical discussions is included.

关键词： slip boundary condition heat and mass transfer skin-friction

From Molecular Pathology of COVID-19 to Nigella Sativum as a Treatment Option:Scientific Based Evidence of Its Myth or Reality

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Chinese Journal of Integrative Medicine 2022年第1期28卷 88-95页

作者： Muhammad atif Farrah Naz Junaid Akhtar Muhammad Imran Sidrah Saleem Javed Akram Muhammad Imran Muhammad Ikram Ullah Department of Clinical Laboratory Sciences College of Applied Medical SciencesJouf UniversitySakaka(75471)Saudi Arabia Department of Microbiology Government College UniversityFaisalabad(38000)Pakistan Department of Microbiology University of Health SciencesLahore(54600)Pakistan Department of Allied Health Sciences Sargodha Medical CollegeUniversity of SargodhaSargodha(40100)Pakistan University of Health Sciences Lahore(54600)Pakistan University Institute of Diet and Nutritional Sciences Faculty of Allied Health SciencesThe University of LahoreLahore(54590)Pakistan

COVID-19 virus is a causative agent of viral pandemic in human beings which specifically targets respiratory system of humans and causes viral *** unusual viral pneumonia is rapidly spreading to all parts of the world,currently affecting about 105 million people with 2.3 million *** review described history,genomic characteristics,replication,and pathogenesis of COVID-19 with special emphasis on Nigella sativum(***)as a treatment *** seeds are historically and religiously used over the centuries,both for prevention and treatment of different *** review summarizes the potential role of *** seeds against COVID-19 infection at levels of in silico,cell lines and animal models.

关键词： coronavirus nCoV-19 COVID-19 Nigella sativum review

A study on the factor market distortion and the carbon emission scale effect of two-way FDI

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Chinese Journal of Population,Resources and Environment 2019年第2期17卷 145-153页

作者： Mengqi Gong Haiyun Liu Rao Muhammad atif Xu Jiang School of Economics Huazhong University of Science and TechnologyWuhan 430074China Department of Economics COMSATS University IslamabadLahore CampusLahorePakistan School of Public Administration Huazhong University of Science and TechnologyWuhanChina

Based on the data of 30 Chinese provinces for the period from 2004 to 2015,this paper expounds the carbon emissions effect of two-way foreign direct investment (FDI) from the perspective of scale effect and factor market *** study uses Kaya identity to decompose carbon emission and construct simultaneous equations model to empirically examine the factor market distortion and the carbon emission scale effect of two-way *** results show that the inward foreign direct investment (IFDI) increase regional carbon emission through scale effect and also exacerbates factor market distortion in China,whereas the outward FDI trends reduce carbon emission and reduces factor market distortions in *** study also shows that human capital,research and development (R&D),trade openness,and capital accumulation are important determinants of two-way ***,the study proposes that IFDI policies should focus on acquiring green *** addition,the domestic enterprises should be encouraged to participate in global business.

关键词： Factor market distortions inward foreign direct investment (IFDI) outward foreign direct investment (OFDI) scale effect carbon emissions

Quality of Service Aware Cluster Routing in Vehicular Ad Hoc Networks

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Computers, Materials & Continua 2021年第6期67卷 3949-3965页

作者： Ishtiaq Wahid Fasee Ullah Masood Ahmad atif Khan M.Irfan Uddin Abdullah Alharbi Wael Alosaimi Department of Computer Science Abdul Wali Khan University MardanMardan23200Pakistan Department of Computer and Information Technology Sarhad University of Science and Information TechnologyPeshawar25000Pakistan Department of Computer Science Islamia College PeshawarPeshawar25000Pakistan Institute of Computing Kohat University of Science and TechnologyKohat2600Pakistan Department of Information Technology College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

In vehicular ad hoc networks(VANETs),the topology information(TI)is updated frequently due to vehicle *** frequent changes in topology increase the topology maintenance *** reduce the control message overhead,cluster-based routing schemes are *** clusterbased routing schemes,the nodes are divided into different virtual groups,and each group(logical node)is considered a *** topology changes are accommodated within each cluster,and broadcasting TI to the whole VANET is not *** cluster head(CH)is responsible for managing the communication of a node with other nodes outside the ***,transmitting real-time data via a CH may cause delays in *** real-time data require quick service and should be routed through the shortest path when the quality of service(QoS)is *** paper proposes a hybrid scheme which transmits time-critical data through the QoS shortest path and normal data through *** this way,the real-time data are delivered efciently to the destination on ***,the routine data are transmitted through CHs to reduce the topology maintenance *** work is validated through a series of simulations,and results show that the proposed scheme outperforms existing algorithms in terms of topology maintenance overhead,QoS and real-time and routine packet transmission.

关键词： QoS VANETs routing real-time communication IoT

Tight gas production model considering TPG as a function of pore pressure,permeability and water saturation

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Petroleum Science 2020年第5期17卷 1356-1369页

作者： atif Zafar Yu-Liang Su Lei Li Jin-Gang Fu Asif Mehmood Wei-Ping Ouyang Mian Zhang School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580ShandongChina Department of Petroleum Technology University of KarachiUniversity RoadKarachi 75270Pakistan Changqing Downhole Technology Company Chuangqing Drilling Engineering Co.LtdCNPCXi’an 710018ShaanxiChina

Threshold pressure gradient has great importance in efficient tight gas field development as well as for research and laboratory *** experimental study is carried out to investigate the threshold pressure gradient in *** are carried out with and without back pressure so that the effect of pore pressure on threshold pressure gradient may be *** trend of increasing or decreasing the threshold pressure gradient is totally opposite in the cases of considering and not considering the pore *** results demonstrate that the pore pressure of tight gas reservoirs has great influence on threshold pressure *** effects of other parameters like permeability and water saturation,in the presence of pore pressure,on threshold pressure gradient are also examined which show that the threshold pressure gradient increases with either a decrease in permeability or an increase in water *** new correlations of threshold pressure gradient on the basis of pore pressure and permeability,and pore pressure and water saturation,are also *** on these equations,new models for tight gas production are *** gas slip correction factor is also considered during derivation of this proposed tight gas production *** performance relationship curves based on these proposed models show that production rates and absolute open flow potential are always be overestimated while ignoring the threshold pressure gradients.

关键词： Inflow performance relationship Pore pressure Threshold pressure gradient Tight gas field development Tight gas sand reservoir

Mathematical Analysis of Novel Coronavirus (2019-nCov) Delay Pandemic Model

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Computers, Materials & Continua 2020年第9期64卷 1401-1414页

作者： Muhammad Naveed Muhammad Rafiq Ali Raza Nauman Ahmed Ilyas Khan Kottakkaran Sooppy Nisar atif Hassan Soori Department of Mathematics Air UniversityIslamabadPakistan Faculty of Engineering University of Central Punjab LahorePakistan Department of Mathematics National College of Business Administration and EconomicsLahorePakistan Department of Mathematics and Statistics The University of LahoreLahorePakistan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh72915Vietnam Department of Mathematics College of Arts and Science at Wadi AldawaserPrince Sattam Bin Abdulaziz UniversityAlkharjSaudi Arabia

In this manuscript,the mathematical analysis of corona virus model with time delay effect is *** modelling of infectious diseases has substantial role in the different disciplines such as biological,engineering,physical,social,behavioural problems and many *** of infectious diseases are dreadful such as HIV/AIDS,Hepatitis and ***,due to the non-availability of vaccine for 2019-nCov around the world,the delay factors like,social distancing,quarantine,travel restrictions,holidays extension,hospitalization and isolation are used as key tools to control the pandemic of *** have analysed the reproduction number𝐑𝐑𝐧𝐧𝐧𝐧𝐧𝐧𝐧𝐧of delayed *** key strategies from the reproduction number of 2019-nCov model,may be followed,according to the nature of the disease as if it is diminished or present in the *** more delaying tactics eventually,led to the control of *** and global stability of 2019-nCov model is presented for the *** have also investigated the effect of delay factor on reproduction number𝐑R_(nCov).Finally,some very useful numerical results are presented to support the theoretical analysis of the model.

关键词： 2019-nCov delay model reproduction number stability analysis numerical results