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Optimization and modeling of glyphosate biodegradation by a novel Comamonas odontotermitis P2 through response surface methodology

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Pedosphere 2020年第5期30卷 618-627页

作者： Sadiqa FIRDOUS Samina iqbal Samina ANWAR Soil and Environmental Biotechnology Division National Institute for Biotechnology and Genetic Engineering(NIBGE)Faisalabad 38000(Pakistan) Pakistan Institute of Engineering and Applied Sciences(PIEAS) NiloreIslamabad 45650(Pakistan)

Glyphosate is an important organophosphonate herbicide used to eliminate grasses and herbaceous plants in many vegetation management *** extensive use is causing environmental pollution,and consequently,there is a need to remove it from the environment using an eco-friendly and cost-effective *** a step to address this problem,a novel bacterial strain Comamonas odontotermitis F2,capable to utilize glyphosate as a carbon(C)and/or phosphorus(P)source,was isolated from a glyphostate-contaminated field soil in Australia and *** surface methodology(RSM)employing a 2^3 full factorial central composite design was used to optimize glyphosate degradation by *** P2 under various culture *** strain *** P2 was proficient in degrading 1.5 g L^-1 glyphosate completely within 104 *** optimal conditions for the degradation of glyphosate were found to be pH 7.4,29.9℃,and an inoculum density of 0.54 g L^-1,resulting in a maximum degradation of 90%.Sequencing of glyphosate oxidoreductase(GOX)and C-P lyase(phnJ)genes from *** P2 revealed 999c and 93%identities to already reported bacterial GOX and phnJ genes,*** presence of these two genes in *** indicates its potential to degrade glyphosate through GOX and C-P lyase metabolic *** study demonstrates the potential of *** P2 for efficient degradation of glyphosate,which can be exploited for remediation of glyphosate.

关键词： bacterial strain central composite rotatable design glyphosate oxidoreductase high-performance liquid chromatography inoculum density organophosphonate herbicide remediation

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Dispersive propagation of optical solitions and solitary wave solutions of Kundu-Eckhaus dynamical equation via modified mathematical method

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Applied Mathematics(A Journal of Chinese Universities) 2023年第1期38卷 16-26页

作者： Aly R.Seadawy Mujahid iqbal Mathematics Department Faculty of ScienceTaibah UniversityAl-Madinah Al-Munawarah41411Kingdom of Saudi Arabia School of Mathematical Sciences Jiangsu UniversityZhenJiang 212013China

In this research work,we constructed the optical soliton solutions of nonlinear complex Kundu-Eckhaus(KE)equation with the help of modified mathematical *** obtained the solutions in the form of dark solitons,bright solitons and combined dark-bright solitons,travelling wave and periodic wave solutions with general *** our knowledge earlier reported results of the KE equation with specific *** obtained solutions are more useful in the development of optical fibers,dynamics of solitons,dynamics of adiabatic parameters,dynamics of fluid,problems of biomedical,industrial phenomena and many other *** calculations show that this technique is more powerful,effective,straightforward,and fruitfulness to study analytically other higher-order nonlinear complex PDEs involves in mathematical physics,quantum physics,Geo physics,fluid mechanics,hydrodynamics,mathematical biology,field of engineering and many other physical sciences.

关键词： Kundu-Eckhaus equation modified mathematical method solitons and solitary wave solutions

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An Improved Perturb and Observe Maximum Power Point Tracking Algorithm for Photovoltaic Power Systems

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Journal of Modern Power Systems and Clean Energy 2023年第4期11卷 1165-1175页

作者： Rasool Kahani Mohsin Jamil M.Tariq iqbal Department of Electrical and Computer Engineering Memorial University of NewfoundlandSt.John’sA1B 3X5Canada

This paper aims to improve the performance of the conventional perturb and observe(P&O)maximum power point tracking(MPPT)*** the oscillation around the maximum power point(MPP)is the main disadvantage of this technique,we introduce a modified P&O algorithm to conquer this *** new algorithm recognizes approaching the peak of the photovoltaic(PV)array power curve and prevents the oscillation around the *** key to achieve this goal is testing the change of output power in each cycle and comparing it with the change in array terminal power of the previous *** a decrease in array terminal power is observed after an increase in the previous cycle or in the opposite direction,an increase in array terminal power is observed after a decrease in the previous cycle;it means we are at the peak of the power curve,so the duty cycle of the boost converter should remain the same as the previous ***,an optimized duty cycle is introduced,which is adjusted based on the operating point of PV ***,a DC-DC boost converter powered by a PV array simulator is used to test the proposed *** the irradiance changes,the proposed algorithm produces an averageηMPPT of nearly 3.1%greater than that of the conventional P&O algorithm and the incremental conductance(In C)*** addition,under strong partial shading conditions and drift avoidance tests,the proposed algorithm produces an averageηMPPT of nearly 9%and 8%greater than that of the conventional algorithms,respectively.

关键词： Photovoltaic system maximum power point tracking(MPPT) perturb and observe(P&O) boost converter steady-state performance

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An efficient technique to retrieve information from a damaged near-field communication tag

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International Journal of Intelligent Computing and Cybernetics 2017年第1期10卷 41-51页

作者： Dawer Saeed Razi iqbal Al-Khawarizmi Institute of Computer Science University of Engineering and TechnologyLahoreLahorePakistan College of Computer Information Technology American University in the EmiratesDubaiUnited Arab Emirates

Purpose-The purpose of this paper is to discuss a technique of restoring data from a broken/damaged near-field communication(NFC)tag whose coil is damaged and seems ***/methodology/approach-This paper discusses a method to restore data from damaged NFC tags by designing a coil that matches the technical specification of NFC for restoring *** this paper,an NFC tag with a broken antenna coil and its operational NFC chip is used for restoring data by making an external loop antenna for the same ***-If the NFC tag is damaged,the information stored on the tag can be lost and can cause serious *** research provides an excellent mechanism for retrieving all the information accurately from a damaged NFC tag provided the NFC chip is not *** limitations/implications-One of the major limitations of this research is that the NFC chip remains intact without any *** can only be recoverable if just the antenna of the NFC tag is damaged;any damage to the NFC chip would make it impossible for the data to be *** implications-The research is carried out with limited resources in an academic institute and hence cannot be compared to antenna designs of the ***,industry vendors are using aluminum to design the coil;however,in this study a copper coil is used for coil design since it is far less expensive than aluminum ***/value-NFC is a rather new short-range wireless technology and not much work is done in this field as far as antenna study is *** study brings a technique to design a coil antenna for a damaged NFC tag to retrieve all the information without losing even a single bit of sensitive information.

关键词： Near-field communication Radio frequency identification Antenna design Mutual inductance Short-range wireless communication

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iRNA-PseTNC:identification of RNA 5-methylcytosine sites using hybrid vector space of pseudo nucleotide composition

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Frontiers of Computer Science 2020年第2期14卷 451-460页

作者： Shahid AKBAR Maqsood HAYAT Muhammad iqbal Muhammad TAHIR Department of Computer Science Abdul Wali Khan University MardanKP 23200Pakistan

RNA 5-methylcytosine(m^5C)sites perform a major role in numerous biological processes and commonly reported in both DNA and RNA *** enzymatic mechanism and biological functions of m^5C sites in DNA remain the focusing area of researchers for last few ***,the investigators also targeted m^5C sites in RNA due to its cellular functions,positioning and formation ***,several rudimentary roles of the m^5C in RNA have been explored,but a lot of improvements are still under ***,the identification of RNA methylcytosine sites was carried out via experimental methods,which were very hard,erroneous and time consuming owing to partial availability of recognized *** at the significance of m^5C role in RNA,scientists have diverted their attention from structure to sequence-based *** this regards,an intelligent computational model is proposed in order to identify m^5C sites in RNA with high *** RNA sequences formulation methods namely:pseudo dinucleotide composition,pseudo trinucleotide composition and pseudo tetra nucleotide composition are applied to extract variant and high profound numerical *** a sequel,the vector spaces are fused to build a hybrid space in order to compensate the weakness of each *** learning hypotheses are examined to select the best operational engine,which can truly identify the pattern of the target *** strength and generalization of the proposed model are measured using two different cross validation *** reported outcomes reveal that the proposed model achieved 3%better accuracy than that of the highest present approach in the literature so far.

关键词： methylcytosine sites PseTNC PseTetraNC hybrid features SVM cross validation test

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Small Signal Stability of Three-phase and Six-phase Synchronous Motors:A Comparative Analysis

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Chinese Journal of Electrical Engineering 2020年第1期6卷 22-40页

作者： G.K.Singh Arif iqbal Department of Electrical Engineering Indian Institute of TechnologyRoorkee 247667India Department of Electrical Engineering Rajkiya Engineering College Ambedkar NagarAkbarpur 224122India

Small signal stability analysis is conducted for an asymmetrical six-phase synchronous motor in comparison with its equivalent three-phase *** this purpose,a linearized model of the six-phase synchronous motor is developed using the dq0 approach,which is used in eigenvalue criteria to determine absolute stability in comparison with its equivalent three-phase *** analysis includes a comparison of the variation in evaluated eigenvalues associated with the stator and rotor sides according to changes in both the three and six-phase machine parameters and working *** analytical results are experimentally investigated and validated on a test rig.

关键词： Linearized modeling stability analysis six-phase synchronous motor three-phase synchronous motor

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Stability of Mixed Nash Equilibria in Symmetric Quantum Games

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Communications in Theoretical Physics 2004年第3X期42卷 335-338页

作者： A.iqbal A.H.Toor DepartmentofElectronics Quaid-i-AzamUniversityIslamabad45320Pakistan

In bimatrix games the Bishop-Cannings theorem of the classical evolutionary game theory does not permitpure evolutionarily stable strategies (ESSs) when a mixed ESS exists. We find the necessary form of two-qubit initialquantum states when a switch-over to a quantum version of the game also changes the evolutionary stability of a mixedsymmetric Nash equilibrium.

关键词：量子博弈论混合策略展开稳定性策略纳什平衡

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A Few Integrable Dynamical Systems,Recurrence Operators,Expanding Integrable Models and Hamiltonian Structures by the r-Matrix Method

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Communications in Theoretical Physics 2017年第10期67卷 463-470页

作者：张玉峰 iqbal Muhammad 岳超 College of Mathematics China University of Mining and Technology College of Medical Information Engineering Taishan Medical University

We extend two known dynamical systems obtained by Blaszak, et al. via choosing Casimir functions and utilizing Novikov-Lax equation so that a series of novel dynamical systems including generalized Burgers dynamical system, heat equation, and so on, are followed to be generated. Then we expand some differential operators presented in the paper to deduce two types of expanding dynamical models. By taking the generalized Burgers dynamical system as an example, we deform its expanding model to get a half-expanding system, whose recurrence operator is derived from Lax representation, and its Hamiltonian structure is also obtained by adopting a new way. Finally, we expand the generalized Burgers dynamical system to the （29-1）-dimensional case whose Hamiltonian structure is derived by Poisson tensor and gradient of the Casimir function. Besides, a kind of （29-1）-dimensional expanding dynamical model of the （29-1）-dimensionaJ dynamical system is generated as well.

关键词： r-matrix poisson tensor expanding dynamical system

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Exploring Sulfur Chemistry in TMC-1 with NSRT

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Chinese Physics Letters 2024年第2期41卷 129-132页

作者： Wasim iqbal Xiaohu Li Juan Tuo Ryszard Szczerba Yanan Feng Zhenzhen Miao Jiangchao Yang Jixing Ge Gleb Fedoseev Donghui Quan Qiang Chang Chuan-Lu Yang Tao Yang Gao-Lei Hou Yong Zhang Xuan Fang Xia Zhang Fangfang Li Rong Ma Xiaomin Song Zhiping Kou Yuxuan Sun Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Radio Astrophysics Urumqi 830011China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Nicolaus Copernicus Astronomical Center Rabia´nska 887-100 Toru´nPoland Research Laboratory for Astrochemistry Ural Federal UniversityKuibysheva St.48620026 EkaterinburgRussia Astronomical Computing Research Center Zhejiang LaboratoryHangzhou 311100China School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255000China School of Physics and Optoelectronic Engineering Ludong UniversityYantai 264025China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062China MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi’an Jiaotong UniversityXi’an 710049China School of Physics and Astronomy Sun Yat-sen UniversityGuangzhou 510275China Laboratory for Space Research Faculty of ScienceThe University of Hong KongHong KongChina National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China

There have been several studies on sulfur depletion in dense cores like TMC-1(Taurus Molecular Cloud 1),employing updated reaction networks for sulfur species to explain the missing sulfur in the gas within dense *** of these studies used a C/O ratio of 0.7 or *** present NSRT(NanShan 26m Radio Telescope)observations of TMC-1 alongside results from time-dependent chemical simulations using an updated chemical *** findings highlight the impact of the C/O ratio on the gas-phase evolution of C2S and *** simulation results show that the C/O ratio is an important parameter,playing a fundamental role in determining the gas-phase abundances of sulfur species in dense cores.

关键词： sulfur Sulfur depletion

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Theoretical Investigation of Two-Dimensional Nonlinear Radiative Thermionics in Nano-MHD for Solar Insolation:A Semi-Empirical Approach

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Computer Modeling in Engineering & Sciences 2022年第2期130卷 751-776页

作者： Usman Inayat Shaukat iqbal Tareq Manzoor School of Systems and Technology University of Management and TechnologyLahore54000Pakistan Energy Research Centre COMSATS University IslamabadLahore CampusLahore54000Pakistan

In this contemporary study,theoritical investigation of nanofluidic model is ***-dimensional nanomaterials based mixed flow is considered *** solar radiative heat transport properties have been investigated over a nonlinearly stretched wall in the presence of magneto-hydrodynamic(MHD),by innovative application of semi analytical“optimal homotopy asymptotic method(OHAM)”.OHAM does not require any discretization,linearization and small parameter *** describes extremely precise 1^(st)/2^(nd) order solutions without the need of computing further higher order terms,therefore,fast convergence is *** governing model is transformed into system of ordinary differential equations(ODEs)by exploitation of similarity *** study the significance of radiation parameter alongwith thermophoresis parameter,a semi analytical solver is applied to the transformed *** this work,Brownianmotion,influence ofmagnetic field,Lewis number,Prandtl number,Eckert number and Biot number have investigated on velocity,temperature and nanoparticle concentration *** study provides sufficient number of graphical representations to demonstrate the inspiration of mentioned parameters.

关键词： Magneto-hydrodynamic(MHD) OHAM nanofluid solar radiative stretched wall

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