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Non-Newtonian fluid flow in an axisymmetric channel with porous wall

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Propulsion and Power Research 2013年第4期2卷 254-262页

作者： m.hosseini Z.Sheikholeslami D.D.Ganji Department of mechanical Engineering Islamic Azad UniversityQaemshahr BranchQaemshahrMazandaranIran Department of Civil Engineering University of MazandaranBabolsarIran Department of mechanical Engineering Babol University of TechnologyBabolIran

In the present article Optimal Homotopy Asymptotic method(OHAm)is used to obtain the solutions of momentum and heat transfer equations of non-Newtonian fluid flow in an axisymmetric channel with porous wall for turbine cooling *** method is used for validity of this analytical method and excellent agreement is observed between the solutions obtained from OHAm and numerical *** to this validity,effects of some other parameters are *** results show that Nusselt number increases with increase of Reynolds number,Prandtl number and power law index.

关键词： Non-Newtonian fluid Axisymmetric channel Porous media Optimal Homotopy Asymptotic method(OHAm) Heat transfer

Analytical investigation of laminar flow through expanding or contracting gaps with porous walls

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Propulsion and Power Research 2014年第4期3卷 222-229页

作者： m.Jafaryar F.Farkhadnia E.mohammadian m.hosseini A.m.Khazaee Department of mechanical Engineering Mazandaran Insitute of TechnologyBabol Iran Department of mechanical Engineering Mechanics GroupRamsar BranchIslamic Azad UniversityRcmsarIran Deparment of mechanical Engineering Islamic Azad UniversityQaemshahr BranchQaemshahrMazandaranIran Department of mechanical Engineering Babol University of TechnologyBabolIran

Laminar,isothermal,incompressible and viscous flow in a rectangular domain bounded by two moving porous walls,w hich enable the fuid to enter or exit during successive expansions or contractions is investigated analytically using optimal homotopy asymptotic method(OHAm).OHAm is a powerful method for solving nonlinear problems without depending to the small *** concept of this method is briefly introduced,and it's application for this problem is ***,the results are compared with numerical results and the validity of these methods is *** this verification,we analyze the effects of some physical applicable parameters to show the efficiency of OHAm for this type of *** results are presented to investigate the influence of the non-dimensional wall dilation rate(a)and pemeation Reynolds number(Re)on the velocity,normal pressure distribution and wall shear *** present problem for slowly expanding or contracting walls with weak permeability is a simple model for the transport of biological fuids through contracting or expanding vessels.

关键词： Optimal homotopy asymptotic method(OHAm) Viscous flow Permeation Reynolds number Non-dimensional wall dilation rate Laminar flow Permeable channel

碱性溶液中分子氧在多晶银上的多步还原(英文)

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催化学报 2010年第5期31卷 541-546页

作者： m.JAFARIAN F.GOBAL m.G.mAHJANI m.hosseini ALIABAD Department of Chemistry K.N.Toosi University of Technology Department of Chemistry Sharif University of Technology

Oxygen reduction on a polycrystalline silver electrode was studied by cyclic voltammetry and electrochemical impedance *** reaction occurred by a two-electron *** steps in the mechanism were observed in the cyclic voltammograms recorded with different scan *** intermediates formed in the steps were detected by electrochemical impedance spectroscopy.

关键词：银氧减小周期的 voltammetry 电气化学的阻抗光谱学

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The stability analysis and temporary support design of Gaveshan Dam diversion tunnel

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The stability analysis and temporary support design of Gaves...

Influence of the zigzag fins and inlet arrangements on the cooling proficiency of the mini-channel heat sink

The 2001 ISRm International Symposium-2nd Asian Rock mechanics Symposium(ISRm 2001-2nd ARmS)

作者： A.GHAZVINIAN m.hosseini Tarbiat modarres University P.O.Box 14155-4838Tehran-Iran Imam Khomeini International University P.O.Box 288 GhazvinIran

＜正＞The stability analysis of underground openings is one of the most important subjects in rock mechanics *** this paper,the stability of Gaveshan dam diversion tunnel is dealt with."PHASES"software was used for stability *** different sensivity analysis conditions were studied to estimate the ratio of horizontal to vertical stresses,"K". The results obtained from the instrumentation and from the analysis were *** comparison shows that the displacements at K=1.5 were more realistic.A minimum safety factor of about 1.16,was obtained at K=1.5 by the"PHASES"*** temporary support was recommended,to slightly improve the stability condition.

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Propulsion and Power Research 2024年第2期13卷 194-206页

作者： A.Torbatinezhad Y.Pahamli m.J.hosseini R.Bahrampoury School of mechanical Engineering Babol University of TechnologyBabolIran Department of mechanical Engineering Semnan UniversitySemnanIran Department of mechanical Engineering Faculty of EngineeringGolestan UniversityGorganIran Department of mechanical Engineering K.N.Toosi University of TechnologyTehranIran

mini-channel heatsinks are one of the most effective thermal management methods for high heatﬂux devices due to the high performance of convective heat *** recent years,various techniques have been innovated to improve the thermal proﬁciency of the mini-channel *** of these are taking advantage ofﬁns’structural designs and ar-rangements of inlets and *** zigzagﬁns and channels were considered in the previous works in heatsinks,and researchers analyzed their cooling enhancement ***,in the present work,a combined cooling technique,considering new-type zigzagﬁns’geometrical parameters(arrangement,length,and height)causes turbulenceﬂow and higher convective heat transfer along with different positionings ofﬂow inlet and outlets resulting in superior temper-ature uniformity,is proposed to evaluate their impacts on the cooling proﬁciency of the heat sink versus different Reynolds *** assess the thermal and hydraulic performance of the proposed heatsink,different parameters,including temperature contours,Nusselt numbers,thermal resistance,and entropy generation are *** a result,it is observed that in the case demonstrating the best thermal performance,the Nusselt number,pressure drop,thermal resistance,and entropy generation are respectively 37.13,4586.46 Pa,0.000078 m^(2)·K/W,and 0.1078 W/K in the best *** well,it is found that by changing the arrangements of inlets and outlets,the Nusselt number,and thermal resistance are improved by 12%and 13%,***,the proposed mini-channel heat sink could be used as a high-performance thermal management system for electronic devices in different industries,including energy,solar,and medical sectors.

关键词： Thermal management Heat transfer enhancement mini-channel heatsink Zigzagﬁn Entropy generation Electronic cooling

A parsimonious Bayesian predictive model for forecasting new reported cases of West Nile disease

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Infectious Disease modelling 2024年第4期9卷 1175-1197页

作者： Saman hosseini Lee W.Cohnstaedt John m.Humphreys Caterina Scoglio Department of Electrical and Computer Engineering Kansas State UniversityManhattanKSUSA Foreign Arthropod-Borne Animal Diseases Research Unit National Bio-and Agro-defense Facility USDA ARSManhattanKSUSA Foreign Animal Disease Research Unit National Bio-and Agro-defense FacilityUSDA ARSManhattanKSUSA

Upon researching predictive models related toWest Nile virus disease,it is discovered that there are numerous parameters and extensive information in most models,thus contributing to unnecessary *** challenge frequently encountered is the lead time,which refers to the period for which predictions are made and often is too *** paper addresses these issues by introducing a parsimonious method based on ICC curves,offering a logistic distribution model derived from the vector-borne SEIR *** existing models relying on diverse environmental data,our approach exclusively utilizes historical and present infected human cases(number of new cases).With a yearlong lead time,the predictions extend throughout the 12 months,gaining precision as new data *** conditions are derived to minimize Bayesian loss,enhancing predictive *** construct a Bayesian forecasting probability density function using carefully selected prior *** these functions,we predict monthspecific infections nationwide,rigorously evaluating accuracy with probabilistic ***,HPD credible intervals at 90%,95%,and 99%levels is *** assessment is conducted for HPD intervals,measuring the proportion of intervals that does not include actual reported cases for 2020e2022.

关键词： West nile virus ICC curve Bayesian model Logistic distribution HPD credible interval

Comparison of da Vinci 5 with previous versions of da Vinci and Sina:A review Author links open overlay panel

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Laparoscopic, Endoscopic and Robotic Surgery 2024年第2期7卷 60-65页

作者： Arya Asadizeidabadi Seyedmohammadamin hosseini Fedor Vetshev Sergey Osminin Seyedali hosseini Department of Faculty Surgery I.M.Sechenov First Moscow State Medical UniversityMoscow 119435Russia

Robotic systems have become popular in modern surgical *** option of telesurgery has effectively addressed geographic *** systems are offered by numerous companies *** this review article,we discuss four models of robotic systems to determine their advantages:the Sina flex system from Iran and the da Vinci Xi,SP,and 5 systems from the *** compared aspects such as architecture,instruments,visualizations,clinical use,and *** findings suggest that the da Vinci robot,which was introduced earlier than the Sina system,utilizes proprietary and limited-use EndoWrist instruments with diameters ranging from 8 to 12 mm and features advanced imaging capabilities,including three-dimensional optical,tomographic,and fluorescence *** is well established and widely utilized in various surgical ***,the Sina flex system employs single-use 5 mm instruments and is equipped with two-dimensional optical imaging as a standard,with optional three-dimensional and fluorescence imaging upgrades *** its affordability,the Sina flex system is relatively new and has not yet been clinically ***,the Sina flex system is more user-friendly.

关键词： Robot-assisted surgery Robotic surgery da Vinci 5 da Vinci Sina Telesurgery

Solar and wind energy potential assessment for Razavi Khorasan Province in Iran

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Journal of Central South University 2024年第6期31卷 2027-2038页

作者： hosseini Amirpouya RAmEZANI Faeze mIRhosseini mojtaba School of Advanced Technologies Iran University of Science and TechnologyTehranIran

This study aims to evaluate the solar and wind energy potential across Razavi Khorasan Province,Iran,with a specific focus on the Khaf region.A preliminary assessment of mean solar radiation,mean wind speeds,and Weibull distribution parameters was conducted for different towns and zones within the *** findings showed that Khaf has favorable characteristics for further *** solar and wind energy metrics examined include global horizontal irradiance,clearness index,wind rose patterns,and turbulence *** a height of 40 m,Khaf’s wind power density reached 1650 W/m^(2),indicating exceptional wind energy generation ***,Khaf received an average annual solar radiation of 2046 kW·h/m^(2),representing significant solar energy *** these substantial renewable resources in Khaf could allow Razavi Khorasan Province to reduce reliance on fossil fuels,improve energy sustainability,and mitigate climate change *** research contributes an in-depth assessment of Razavi Khorasan's solar and wind energy potential,particularly for the promising Khaf *** work may examine optimal sites for renewable energy projects and grid integration strategies to leverage these resources.

关键词： solar energy wind energy Razavi Khorasan radiation Weibull distribution

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Soliton and other solutions to the (1+2)-dimensional chiral nonlinear Schrodinger equation

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Communications in Theoretical Physics 2020年第12期72卷 99-104页

作者： K hosseini m mirzazadeh Department of mathematics Rasht BranchIslamic Azad UniversityRashtIran Department of Engineering Sciences Faculty of Technology and EngineeringEast of GuilanUniversity of GuilanUniversity of GuilanP.C.44891-63157 Rudsar-VajargahIran

The(1+2)-dimensional chiral nonlinear Schr?dinger equation(2D-CNLSE)as a nonlinear evolution equation is considered and studied in a detailed *** this end,a complex transform is firstly adopted to arrive at the real and imaginary parts of the model,and then,the modified Jacobi elliptic expansion method is formally utilized to derive soliton and other solutions of the *** exact solutions presented in this paper can be classified as topological and nontopological solitons as well as Jacobi elliptic function solutions.

关键词： modified Jacobi elliptic expansion method (1+2)-dimensional chiral nonlinear Schrodinger equation topological and nontopological solitons Jacobi elliptic function solutions

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