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Neural Regeneration Research 2025年第6期20卷 1699-1700页

作者： seyed Mojtaba Hosseini soheila Karimi-Abdolrezaee Department of Physiology and Pathophysiology Spinal Cord Research CentreRady Faculty of Health SciencesUniversity of ManitobaWinnipegMBCanada manitoba Multiple Sclerosis Research Center WinnipegMBCanada Children Hospital Research Institute of manitoba WinnipegMBCanada

Extensive neurodegeneration is a hallmark of traumatic spinal cord injury (SCI) that underlies permanent sensorimotor and autonomic impairments (Alizadeh et al.,2019).Following the primary impact,the spinal cord undergoes a cascade of secondary injury mechanisms that are driven by disruption of the blood-spinal cord ba rrier,vascula r inju ry,glial reactivity,neu roinfla mmation,oxidative stress,lipid peroxidation,and glutamate excitotoxicity that culminate in neuronal and oligodendroglial cell death,demyelination,and axonal damage(Alizadeh et al.,2019).To achieve a meaningful functional recovery after SCI,regeneration of new neurons and oligodendrocytes and their successful growth and integration within the neural network are critical steps for reconstructing the damaged spinal cord tissue (Fischer et al.,2020).

关键词： peroxidation Fischer injury

Effect of Oxygenates Blending with Gasoline to Improve Fuel Properties

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Chinese Journal of Mechanical Engineering 2012年第4期25卷 792-796页

作者： BABAZADEH SHAYAN soheil seyedPOUR seyed Morteza OMMI Fathollah Department of Mechanical Engineering Tarbiat Modares UniversityTehranIran Department of Mechanical Engineering Iran University of Science and TechnologyTehranIran

The purpose of this paper is to study the effect of oxygenate additives into gasoline for the improvement of physicochemical properties of *** Tertiary Butyl Ether（MTBE）,Methanol,Tertiary butyl alcohol（TBA）,and Tertiary amyl alcohol（TAA） blend into unleaded gasoline with various blended rates of 2.5%,5%,7.5%,10%,15%,and 20%.Physicochemical properties of blends are analyzed by the standard American Society of Testing and materials（ASTM） ***,TBA,and TAA increase density of the mixtures,but MTBE decreases *** addition of oxygenates lead to a distortion of the base gasoline＇s distillation *** Reid vapor pressure（RVP） of gasoline is found to increase with the addition of the oxygenated *** oxygenates improve both motor and research octane *** these four additives,TBA shows the best fuel properties.

关键词： gasoline oxygenates distillation curve reid vapor pressure octane number

A simple kinetic model for oxidative coupling of methane over La_(0.6)Sr_(0.4)Co_(0.8)Fe_(0.2)O_(3-δ) nanocatalyst

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Journal of Natural Gas Chemistry 2011年第3期20卷 325-333页

作者： Ali Farsi Sattar Ghader Ali Moradi seyed soheil ma.souri Vahid Shadravan Department of Chemical Engineering Shahid Bahonar University of Kerman Young Researchers Society Shahid Bahonar University of Kerman

A simplified kinetic model for the oxidative coupling of methane over a La0.6Sr0.4Co0.8Fe0.2O3-δ nanocatalyst is presented. The kinetic model was developed by experimental data in a catalytic micro-reactor covering a wide range of reaction conditions （0.04〈PO2〈0.15 atm, 0.2〈PCH4〈0.85 atm, 800〈T 〈900 °C）. Power law rate expressions were used for all reactions. The reaction scheme proposed in this work includes the most important reactions of oxidative coupling of methane and those involved in most of the available mechanisms in the literature. From the experimental data, kinetic parameters, i.e., pre-exponential factors, activation energies and power law exponents, were estimated. The compatibility of model results with experimental data was investigated and the accuracy of the model prediction was evaluated. Rates of methane consumption, C2＋ and COx formation, methane conversion, and C2＋ selectivity and yield were compared with experimental data using presented kinetics. The kinetic model was also compared with four previous kinetic models in terms of methane conversion.

关键词： nanocatalyst kinetic model oxidative coupling of methane

Prevalence of hepatitis C virus infection among hemodialysis patients in the Middle-East: A systematic review and meta-analysis

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World Journal of Gastroenterology 2017年第1期23卷 151-166页

作者： soheil Ashkani-Esfahani seyed Moayed Alavian Mohammad Salehi-marzijarani Baqiyatallah Research Center for Gastro-enterology and Liver Diseases Baqiyatallah University of Medical Sciences Student Research Committee Shiraz University of Medical Sciences Department of Biostatistics Shiraz University of Medical Sciences

AIM To determine hepatitis C virus(HCV)infection prevalence in each country of the Middle-East and the overall prevalence of the *** In this systematic review,we gathered all documents related to HCV infection prevalence among hemodialysis patients in 17 middle-east countries from April 2006 to march *** selected only cross-sectional studies that had proper sampling and measurement methods as well as a valid statistical *** After screening of 7311 documents,56 studies were selected reporting the prevalence of HCV infection among hemodialysis patients from 10 countries of the *** countries including United Arab Emirates,Afghanistan,Qatar,Bahrain,Kuwait,Oman,Israel,and Cyprus did not have any relevant document;thus,their latest reports were just *** performed the meta-analysis and determined the prevalence rates for each country as well as the whole *** overall HCV infection prevalence among hemodialysis patients in the region was reported to be 25.3%;Egypt and Syria had the highest reported rates while Iran and Lebanon had the *** investigations are still needed to provide more reliable databases,find main risk factors,and to improve diagnosis and treatment plans,particularly in higher prevalent *** Controlling the prevalence and improving the management methods of HCV infection among hemodialysis patients are of a great concern in the Middle-East region.

关键词： Hepatitis C Hemodialysis Prevalence Middle-East Meta-Analysis Review

An advanced turbulator with blades and semi-conical section for heat transfer improvement in a helical double tube heat exchanger

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Journal of Central South University 2021年第11期28卷 3491-3506页

作者： seyed Hossein HASHEMI KAROUEI seyed soheil MOUSAVI AJAROSTAGHI Saman RASHIDI Elham HOSSEINIRAD Department of Mechanical Engineering Babol Noshirvani University of TechnologyBabolMazandaranIran Department of Energy Faculty of New Science and TechnologiesSemnan UniversitySemnanIran Department of Chemical Petroleumand Gas EngineeringSemnan UniversitySemnanIran

In present work,a helical double tube heat exchanger is proposed in which an advanced turbulator with blades,semi-conical part,and two holes is inserted in inner *** geometrical parameters,including angle of turbulator’s blades(θ) and number of turbulator’s blades(N),are *** indicated that firstly,the best thermal stratification is achieved at θ=180°.Furthermore,at the lowest studied mass flow rate(m = 8 × 10^(-3) kg/s),heat transfer coefficient of turbulator with blade angle of 180° is 130.77%,25%,and 36.36% higher than cases including without turbulator,with turbulator with blade angle of θ =240°,and θ =360°,***,case with N=12 showed the highest overall *** the highest studied mass flow rate(m = 5.842 × 10^(-2) kg/s),heat transfer coefficient for case with N=12 is up to 54.76%,27.45%,and 6.56% higher than cases including without turbulator,with turbulator with N=6,and with turbulator with N=9,respectively.

关键词： helical double tube heat exchanger turbulator blade thermal performance swirl flows

Thermal performance of a single U-tube ground heat exchanger:A parametric study

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Journal of Central South University 2021年第11期28卷 3580-3598页

作者： seyed soheil MOUSAVI AJAROSTAGHI Hossein JAVADI seyed Sina MOUSAVI Sébastien PONCET Mohsen POURFALLAH Faculty of Mechanical Engineering Babol Noshirvani University of TechnologyBabol 47148-71167Iran Faculty of Mechanical Engineering Mazandaran University of Science and TechnologyBabol 47166-85635Iran Faculty of Civil Engineering Babol Noshirvani University of TechnologyBabol 47148-71167Iran Department of Mechanical Engineering Universitéde Sherbrooke2500 Boulevard de l'UniversitéSherbrookeQuébecJ1K 2R1Canada

In this research,the thermal performance of a single U-tube vertical ground heat exchanger is evaluated numerically as a function of the most influential flow parameters,namely,the soil porosity,volumetric heat capacity,and thermal conductivity of the backfill material,inlet volume flow rate,and inlet fluid *** results are discussed in terms of the variations of the heat exchange rate,the effective thermal resistance,and the effectiveness of the ground heat *** show that the inlet volume flow rate,inlet fluid temperature,and backfill material thermal conductivity have significant effects on the thermal performance of the ground heat exchanger,such that by decreasing the inlet volume flow rate and increasing the backfill material thermal conductivity and inlet fluid temperature,the outlet fluid temperature decreases *** the contrary,the soil porosity and backfill material volumetric heat capacity have negligible effects on the studied ground heat exchanger’s thermal *** lowest inlet fluid temperature reaches a the maximum effective thermal resistance of borehole and soil,and consequently the minimum heat transfer rate and ***,multilinear regression analyses are performed to determine the most feasible models able to predict the thermal properties of the single U-tube ground heat exchanger.

关键词： single U-tube ground heat exchanger numerical simulation heat exchange rate effectiveness multilinear regression analysis

Contribution of mammalian target of rapamycin in the pathophysiology of cirrhotic cardiomyopathy

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World Journal of Gastroenterology 2016年第19期22卷 4685-4694页

作者： seyed soheil Saeedi Saravi mahmoud Ghazi-Khansari Shahram Ejtemaei Mehr maliheh Nobakht Seyyedeh Elaheh Mousavi Ahmad Reza Dehpour Department of Pharmacology School of Medicine Tehran University of Medical Sciences Experimental Medicine Research Center Tehran University of Medical Sciences Department of Toxicology-Pharmacology Faculty of Pharmacy Guilan University of Medical Sciences Department of Anatomy School of Medicine Iran University of Medical Sciences

AIM: To explore the role of mammalian target of rapamycin(m TOR) in the pathogenesis of cirrhotic cardiomyopathy and the potential of rapamycin to improve this pathologic ***: male albino Wistar rats weighing 100-120 g were treated with tetrachloride carbon(CCl_4) for 8 wk to induce cirrhosis. Subsequently, animals were administered rapamycin(2 mg/kg per day). The QT_c intervals were calculated in a 5-min electrocardiogram. Then, the left ventricular papillary muscles wereisolated to examine inotropic responsiveness to β-adrenergic stimulation using a standard organ bath equipped by Powerlab system. Phosphorylated-m TOR localization in left ventricles was immunohistochemically assessed, and ventricular tumor necrosis factor(TNF)-α was measured. Western blot was used to measure levels of ventricular phosphorylated-m TOR ***: Cirrhosis was confirmed by hematoxylin and eosin staining of liver tissues, visual observation of lethargy, weight loss, jaundice, brown urine, ascites, liver stiffness, and a significant increase of spleen weight(P < 0.001). A significant prolongation in QTc intervals occurred in cirrhotic rats exposed to CCl_4(P < 0.001), while this prolongation was decreased with rapamycin treatment(P < 0.01). CCl_4-induced cirrhosis caused a significant decrease of contractile responsiveness to isoproterenol stimulation and a significant increase in cardiac TNF-α. These findings were correlated with data from western blot and immunohistochemical studies on phosphorylated-m TOR expression in left ventricles. Phosphorylated-m TOR was significantly enhanced in cirrhotic rats, especially in the endothelium, compared to controls. Rapamycin treatment significantly increased contractile force and myocardial localization of phosphorylated-m TOR and decreased cardiac TNF-α concentration compared to cirrhotic rats with no treatment. CONCLUSION: In this study, we demonstrated a potential role for cardiac m TOR in the pathophysiology of cirrhoti

关键词： Cirrhotic cardiomyopathy Rat mammalian target of Rapamycin Rapamycin Inotropic effect

Kinetic studies of the oxidative coupling of methane over the Mn/Na_2WO_4/SiO_2 catalyst

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Journal of Natural Gas Chemistry 2009年第1期18卷 25-34页

作者： seyed Mehdi Kamali Shahri seyed Mehdi Alavi Reaction Engineering Lab. Chemical Engineering Department Iran University of Science and Technology Tehran-Iran

Oxidative coupling of methane is a direct way to obtain C2 hydrocarbon, and Mn-Na-W/SiO2 catalyst is the most promising among all the catalysts. The 2%Mn/5%Na2WO4/SiO2 catalyst was prepared by the incipient wetness impregnation method. A 7-step heterogeneous reaction model of the oxidative coupling of methane to C2 hydrocarbons was conducted by co-feeding methane and oxygen at a total pressure of 1 bar over the catalyst. The kinetic measurements were carried out in a micro-catalytic fixed bed reactor. The kinetic data were obtained at the appropriate range of reaction conditions （4 kPa〈Po2 〈20 kPa, 20 kPa〈PcH4〈80 kPa, 800 ℃〈T〈900℃）. The proposed reaction kinetic scheme consists of three primary and four consecutive reaction steps. The conversions of hydrocarbons and carbon oxides were evaluated by applying Langmuir-Hinshelwood type rate equations. Power-law rate equation was applied only for the water-gas shift reaction. In addition, the effects of operating conditions on the reaction rate were studied. The proposed kinetic model can predict the conversion of methane and oxygen as well as the yield of C2 hydrocarbons and carbon oxides with an average accuracy of ± 15%.

关键词： kinetic model oxidative coupling of methane reaction rate

Assessment of fracture process in forta and polypropylene fiber-reinforced concrete using experimental analysis and digital image correlation

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Frontiers of Structural and Civil Engineering 2022年第12期16卷 1633-1652页

作者： seyed Hamid KALALI Hamid ESKANDARI-NADDAF seyed Ali EmaMIAN Department of Civil Engineering Hakim Sabzevari UniversitySabzevar ***Iran

This paper aims to characterize the evolution of the fracture process and the cracking behavior in fortaferro(FF)and polypropylene(PP)fiber-reinforced concrete under the uniaxial compressive loading using experimental analysis and digital image correlation(DIC)on the surface *** this purpose,6 mix designs,including two FF volume fractions of 0.10%,and 0.20%and three PP volume fractions of 0.20%,0.30%,and 0.40%,in addition to a control mix were evaluated according to compressive strength,modulus of elasticity,toughness index,and stress–strain *** influence of fibers on the microstructural texture of specimens was analyzed by scanning electron microscope(SEM)*** show that FF fiber-reinforced concrete specimens demonstrated increased ductility and strength compared to PP *** results revealed that the major crack and fracture appeared at the peak load of the control specimen due to brittleness and sudden gain of large lateral strain,while a gradual increase in micro-crack quantity at 75%of peak load was observed in the fiber specimens,which thenbegan to connect with each other up to the final *** accuracy of the results supports DIC as a reliable alternative for the characterization of the fracture process in fiber-reinforced concrete.

关键词： fiber-reinforced concrete forta-ferro and polypropylene fiber fracture process cracking behavior digital image correlation

Evaluation of hydrogen effect on the fatigue crack growth behavior of medium-Mn steels via in-situ hydrogen plasma charging in an environmental scanning electron microscope

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Journal of materials Science & Technology 2021年第26期85卷 30-43页

作者： Di Wan Yan ma Binhan Sun seyed Mohammad Javad Razavi Dong Wang Xu Lu Wenwen Song Department of Mechanical and Industrial Engineering Norwegian University of Science and TechnologyRichard Birkelands vei 2B7491TrondheimNorway Steel Institute(IEHK) RWTH Aachen UniversityIntzestraße 152072AachenGermany max-Planck-Institut für Eisenforschung GmbH Max-Planck-Straße 140237DüsseldorfGermany

Fatigue crack growth(FCG)tests were conducted on a medium-Mn steel annealed at two intercritical annealing temperatures,resulting in different austenite(γ)to fe rrite(α)phase fractions and differentγ(meta-)*** in-situ hydrogen plasma charging was combined with in-situ cyclic loading in an environmental scanning electron microscope(ESEM).The in-situ hydrogen plasma cha rging increased the fatigue crack growth rate(FCGR)by up to two times in comparison with the reference tests in *** investigations showed a brittle-like crack growth or boundary cracking manner in the hydrogen environment while a ductile transgranular manner in *** both materials,the plastic deformation zone showed a reduced size along the hydrogen-influenced fracture path in comparison with that in *** difference in the hydrogen-assisted FCG of the medium-Mn steel with different microstructures was explained in terms of phase fraction,phase stability,yielding strength and hydrogen *** refined study can help to understand the FCG mechanism without or with hydrogen under in-situ hydrogen charging conditions and can provide some insights from the applications point of view.

关键词： Hydrogen embrittlement Fatigue crack growth(FCG) Electron channeling contrast imaging(ECCI) Medium-Mn steel Hydrogen plasma