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Chinese Journal of Chemical Engineering 2017年第9期25卷 1256-1265页

作者： A.M.Eldesoky s.G.Nozha Engineering Chemistry department High Institute of Engineering & Technology Al-Qunfudah Center for scientific Research (QCsR) Al-Qunfudah University College Umm Al-Qura University Ministry of Health Domyat Laboratory

The protection influence of 8-hydroxy-7-quinolinecarboxaldehyde derivatives against C-steel corrosion was studied in 2 mol·L^(-1)HCl solutions at 30 °C. Measurements were conducted under various experimental conditions using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy(EIs) and electrochemical frequency modulation(EFM) techniques. These studies have shown that 8-hydroxy-7-quinolinecarboxaldehyde derivatives are very good "green", mixed-type inhibitors. Corrosion rates obtained from both EFM and EIs methods are comparable with those recorded using Tafel extrapolation method, confirming validation of corrosion rates measured by the latter. The inhibitive action of these 8-hydroxy-7-quinolinecarboxaldehyde derivatives was discussed in terms of blocking the electrode surface by adsorption of the molecules through the active centers contained in their structures following Langmuir adsorption isotherm. Quantum chemical method was also employed to explore the relationship between the inhibitor molecular properties and its protection efficiency.

关键词： 8-Hydroxy-7-quinolinecarboxaldehyde derivatives C-steel HCl EFM

Approximate energies and thermal properties of a position-dependent mass charged particle under external magnetic fields

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Chinese Physics B 2017年第6期26卷 22-30页

作者： M Eshghi H Mehraban s M Ikhdair Young Researchers and Elite Club Central Tehran BranchIslamic Azad UniversityTehranIran Faculty of Physics Semnan UniversitySemnanIran department of Physics Faculty of ScienceAn-Najah National UniversityNablusWest BankPalestine department of Electrical Engineering Near East UniversityNicosiaNorthern CyprusMersin 10Turkey

We solve the schrodinger equation with a position-dependent mass（PdM） charged particle interacted via the superposition of the Morse-plus-Coulomb potentials and is under the influence of external magnetic and Aharonov–Bohm（AB） flux fields. The nonrelativistic bound state energies together with their wave functions are calculated for two spatially-dependent mass distribution functions. We also study the thermal quantities of such a system. Further, the canonical formalism is used to compute various thermodynamic variables for second choosing mass by using the Gibbs formalism. We give plots for energy states as a function of various physical parameters. The behavior of the internal energy, specific heat, and entropy as functions of temperature and mass density parameter in the inverse-square mass case for different values of magnetic field are shown.

关键词： schr?dinger equation Morse-plus-Coulomb potentials position-dependent mass distribution functions perpendicular magnetic and Aharonov–Bohm flux fields

The Blood Flow of Prandtl Fluid Through a Tapered stenosed Arteries in Permeable Walls with Magnetic Field

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Communications in Theoretical Physics 2015年第3期63卷 353-358页

作者： R.Ellahi s.U.Rahman s.Nadeem K.Vafai department of Mechanical Engineering University of California Riverside department of Mathematics and statistics Faculty of Basic Applied sciences International Islamic University department of Mechatronics University of Engineering and Technology TexilaChakwal Campus department of Mathematics Quaid-i-Azam University

This Communication deals with the blood flow of Prandtl fluid through a tapered stenosed arteries having permeable *** governing equations of two-dimensional Prandtl fluid model are modelled in cylindrical *** highly nonlinear equations are simplified with the help of non-dimensional variables under the assumption of mild *** solution of reduced nonlinear equation subject to boundary condition of porous walls having the effects of darcy's number and slip parameter are computed analytically with the help of perturbation *** of emerging parameters such as impedance A,slip parameter a,stenosis height 6,magnetic parameter and stress component srz on velocity are illustrated *** streamlines have also been presented to discuss the trapping bolus discipline.

关键词： Prandtl fluid magnetic field blood flow tapered stenosed arteries permeable walls analytical solutions

Analytical approximate solution for nonlinear space-time fractional Klein Gordon equation

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Chinese Physics B 2013年第1期22卷 33-38页

作者： Khaled A. Gepreel Mohamed s. Mohameda Mathematics department Faculty of Science Zagazig University Zagazig Egypt Mathematics department Faculty of Science Taif University Taif Saudi Arabi Mathematics department Faculty of Science Al-Azhar University Nasr City 11884 Cairo Egypt

The fractional derivatives in the sense of Caputo and the homotopy analysis method are used to construct an approximate solution for the nonlinear space-time fractional derivatives Klein-Gordon equation. The numerical results show that the approaches are easy to implement and accurate when applied to the nonlinear space-time fractional derivatives Klein- Gordon equation. This method introduces a promising tool for solving many space-time fractional partial differential equations. This method is efficient and powerful in solving wide classes of nonlinear evolution fractional order equations.

关键词： homotopy analysis method nonlinear space-time fractional Klein-Gordon equation Caputo derivative

synthesis and characterization of CNT/Ce-TiO_2 nanocomposite for phenol degradation

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Journal of Rare Earths 2012年第7期30卷 651-658页

作者： shaari N Tan s H Mohamed A R school of Chemical Engineering Engineering Campus University Sains Malaysia

An innovative photocatalyst, Carbon nanotube （CNT） supported Ce-TiO2 nanocomposite was successfully synthesized via modi-fied sol gel method and investigated in a batch reactor for abolition of phenol under UV light spectrum. Characterization of catalyst micro-structure and internal properties were done by means of X-ray diffraction （XRd）, Brunauer-Emmett-Teller （BET）, scanning electron micros-copy （sEM）, transmission electron microscopy （TEM） and UV-vis diffuse reflectance spectra （dRs）. Ce doping can inhibit phase transfor-mation from anatase to rutile and eliminate the recombination of electron-hole pairs in the catalyst. The presence of CNT in TiO2 composite can both increase the photoactivity under UV and change surface properties to achieve sensitivity to visible light. The optimum mass ratio of CNT support and cerium （Ce） dopant in TiO2 was the prominent factor to harvest CNT/Ce-TiO2 photocatalyst nanocomposite. The results demonstrated that optimum mass ratio of CNT：TiO2：Ce was 0.02：1.0：0.06, which resulted in the great performance of the photocatalyst to de-grade about 94% of phenol in a 50 mg/L solution in only 3 h. In this paper, dissimilar role of CNT support and Ce dopant in the TiO2 photo-catalysis of phenol was also discussed.

关键词： carbon nanotube (CNT) cerium TiO2 nanocomposite photocatalyst phenol rare earths

synthesis of CeO_2 nanoparticles using flame-assisted spray pyrolysis and solid state diffusion routes

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Rare Metals 2015年第1期34卷 6-11页

作者： K.R.Nemade s.A.Waghuley department of Physics Sant Gadge Baba Amravati University

The stable and crystalline phase of pure nano- structured CeO2 was directly synthesized by flame-assisted spray pyrolysis and solid state diffusion route. different characterization techniques, including X-ray diffraction （XRd）, scanning electron microscopy （sEM）, Fourier trans- form infrared spectroscopy （FTIR）, ultraviolet-visible （UV- Vis）, and thermo gravimetric analysis （TGA） were employed to examine the structural, morphological, optical, and thermal properties of the final product. similarly, the comparative carbon dioxide （CO2）-sensing response of as-synthesized CeO2 nanoparticles by both routes was also reported. The CeO2 nanoparticles synthesized by solid state diffusion method exhibit good sensitivity （3.38 %） at room temperature, low operating temperature （398 K）, fast response time （32 s）, and recovery time （36 s） along with good stability.

关键词： CO2 gas sensing Flame-assisted spraypyrolysis solid state diffusion

Genetic-Chicken swarm Algorithm for Minimizing Energy in Wireless sensor Network

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Computer systems science & Engineering 2023年第2期44卷 1451-1466页

作者： A.Jameer Basha s.Aswini s.Aarthini Yunyoung Nam Mohamed Abouhawwash department of Computer science and Engineering Hindusthan Institute of TechnologyCoimbatore641032India department of Computer science and Engineering Soonchunhyang UniversityAsan31538Korea department of Mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt department of ComputationalMathematics science and Engineering(CMsE) Michigan State University East LansingMI48824USA.

Wireless sensor Network(WsN)technology is the real-time applica-tion that is growing rapidly as the result of smart *** power is one of the most signiﬁcant resources in *** enhancing a power factor,the clustering techniques are *** the forward of data in WsN,more power is *** the existing system,it works with Load Balanced Cluster-ing Method(LBCM)and provides the lifespan of the network with scalability and *** the existing system,it does not deal with end-to-end delay and deliv-ery of *** overcoming these issues in WsN,the proposed Genetic Algo-rithm based on Chicken swarm Optimization(GA-CsO)with Load Balanced Clustering Method(LBCM)is *** Algorithm generates chromosomes in an arbitrary method then the chromosomes values are calculated using Fitness *** swarm Optimization(CsO)helps to solve the complex opti-mization ***,it consists of chickens,hens,and *** divides the chicken into *** Balanced Clustering Method(LBCM)maintains the energy during communication among the sensor nodes and also it balances the load in the *** proposed GA-CsO with LBCM improves the life-span of the ***,it minimizes the energy consumption and also bal-ances the load over the *** proposed method outperforms by using the following metrics such as energy efﬁciency,ratio of packet delivery,throughput of the network,lifetime of the sensor ***,the evaluation result shows the energy efﬁciency that has achieved 83.56%and the delivery ratio of the packet has reached 99.12%.Also,it has attained linear standard deviation and reduced the end-to-end delay as 97.32 ms.

关键词： Energy efﬁciency sensor nodes chicken swarm optimization load balanced clustering method wireless sensor network cluster heads load-balancing ﬁtness function

Effect of Processing Parameters on Crystal Orientation of Microstructure in High Niobium-Bearing Microalloyed steel

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Journal of Iron and steel Research International 2011年第S1期18卷 466-470页

作者： subramanian s V McMaster University HamiltonOntarioCanada

The present studies are aimed at understanding the effect of cooling rate and prior strain on the evolution of morphology,orientation relationship (OR) and variant selection in pipeline steel with 0.09wt% *** identical prior austenite grain,all products include granular bainite(GB) by coherent transformation,keep orientation relationship (OR) with parent *** cooling and large deformation below T nr both can raise drive force of coherent transformation and weaken variants selection,and it can generate higher frequency of high angle boundaries (HABs) (≥15degree).Moreover,large deformation by few passes below T nr can accelerate nucleation of ferrite grains at the austenite boundary by incoherent *** fine grains haven’t OR with prior austenite grain in any side of boundary,and exhibit significant misorientations between themselves.

关键词： orientation relationship EBsd low carbon bainite microalloyed steel ferrite grain

study of obliquely propagating electron acoustic shock waves with non-extensive electron population

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Plasma science and Technology 2019年第1期21卷 29-35页

作者： sona BANsAL Munish AGGARWAL Tarsem s GILL sikh National College Research scholar I K Gujral Punjab Technical University department of Applied science Lyallpur Khalsa College of Engineering department of Physics Guru Nanak Dev University

Obliquely propagating electron acoustic shock waves in magnetized plasma composed of stationary ions, cold and non-extensive hot electrons are investigated by deriving Korteweg–de Vries Burgers(KdVB) equation. The tangent hyperbolic method is used to solve the KdVB equation in dissipative medium. The dissipation effect is introduced in the model by means of kinematic viscosity term. The analytical calculations of the KdVB equation shows that the structures(amplitude, velocity and width) of the shock waves are modified significantly with kinematic viscosity(η_0), obliqueness(k_z) and magnetic field(ω_c). since plasmas are ubiquitously permeated with magnetic field, it is pertinent to explore the characteristics of KdVB equation in a magnetized plasmas.

关键词： dissipative medium non-extensive electrons tangent hyperbolic method

A discrete-event model to simulate the effect of truck bunching due to payload variance on cycle time, hauled mine materials and fuel consumption

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International Journal of Mining science and Technology 2016年第5期26卷 745-752页

作者： A.soofastaei s.M.Aminossadati M.s.Kizil P.Knights school of Mechanical and Mining Engineering The University of Queensland

data collected from truck payload management systems at various surface mines shows that the payload variance is significant and must be considered in analysing the mine productivity,energy consumption,greenhouse gas emissions and associated *** variance causes significant differences in gross vehicle *** loaded trucks travel slower up ramps than lightly loaded *** trucks are slowed by the presence of slower trucks,resulting in‘bunching’,production losses and increasing fuel *** paper simulates the truck bunching phenomena in large surface mines to improve truck and shovel systems’efficiency and minimise fuel *** study concentrated on completing a practical simulation model based on a discrete event method which is most commonly used in this field of research in other *** simulation model has been validated by a dataset collected from a large surface mine in Arizona state,*** results have shown that there is a good agreement between the actual and estimated values of investigated parameters.

关键词： discrete-event model simulation Truck bunching Payload variance Cycle time Fuel consumption