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| 1 | Kinetic studies of the oxidative coupling of methane over the Mn/Na_2WO_4/SiO_2 catalyst显示文摘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 | Seyed Mehdi Kamali Shahri Seyed Mehdi Alavi | 2009 | Journal of Natural Gas Chemistry2009，18，1： | 5 |
| 2 | GIS-based method for detecting high-crash-risk road segments using network kernel density estimation显示文摘Identifying high-crash-risk road segments provides safety specialists with an insight to better understanding of crash patterns and enhancing road safety management.The common hotspot identification methods are not robust enough to visualize the underlying shape of crash patterns since they neglect the spatial properties of crash data.Spatial traffic accidents have the tendency to be dependent,a phenomenon known as spatial autocorrelation.Values over distance are more or less similar than expected for randomly associated observations.Modeling the spatial variations can properly be explained in terms of first-and second-order properties.The first-order properties,describe the way of varying the expected value of point pattern in space which can be due to changes in the substantial properties of the local environment,while second-order effects describe the interactive effects of events explaining on how the events are interacted.Considering the discrete nature of crash data and the limited access to exact locations where crashes occur,it is likely that a continuous surface drawn from discrete points will better reflect crash density,present a more realistic picture of crash distribution.Network kernel density estimation(NKDE)is a nonparametric approach for events distributed over one-dimensional space which facilitates estimating the density at any location in the study region not just at the location where the event occurs.NKDE for road safety applications enables the extraction and visualization of crash density along roadways The application of suggested method was illustrated for Arak-Khomein rural road in Markazi province,Iran and the stability of hazardous segments by examining the resulted network estimated density during the three years of study(2006–2008)was investigated.The result of this paper helps the traffic engineers and safety specialists to determine the segments which demand more safety attentions from both transportation authorities and drivers and request assigning the resources such as budget and time. | Afshin Shariat MOHAYMANY Matin SHAHRI Babak MIRBAGHERI | 2013 | Geo-Spatial Information Science2013，16，2： | 5 |
| 3 | The Adsorption of Copper from Aqueous Solutions Using Acrylamide-Grafted Cellulose显示文摘 | M.M. Shahri M.B. Ahmad M.J. Haron M.Z.A. Rahman | 2010 | Journal of Environmental Science and Engineering2010，4，3： | 4 |
| 4 | 电沉积参数对Co-BN(六方)纳米复合涂层显微组织和摩擦性能的影响(英文)显示文摘通过扫描电镜、场发射扫描电镜、能谱、原子力显微镜和X射线衍射等测试技术,研究电流密度、占空比和频率对电沉积Co-BN(六方)纳米复合涂层的显微组织和BN粒子含量的影响。同时,研究其显微硬度、摩擦性能以及磨损机理。随着电流密度和频率的增加,涂层的BN粒子含量和显微硬度先增加后减少。另外,通过减少占空比,可以沉积更多的BN粒子并且得到更高的显微硬度。在占比空10%,频率50 Hz和电流密度100 mA/cm2的条件下,可以得到最佳的涂层摩擦性能。 | Zahra SHAHRI Saeed Reza ALLAHKARAM | 2013 | Transactions of Nonferrous Metals Society of China2013，23，10： | 3 |
| 5 | Ce-promoted Mn/Na_2 WO_4/SiO_2 catalyst for oxidative coupling of methane at atmospheric pressure显示文摘A series of Ce-promoted Mn-Na2WO4/SiO2 catalysts were prepared by incipient wetness impregnation method, and their catalytic performance for oxidative coupling of methane (OCM) was investigated at atmospheric pressure in a micro-quartz-tube reactor. The catalysts were characterized by X-ray diffraction (XRD), temperature program reduction (TPR) and BET surface area. Ce promoter increased surface area and Na2WO4 species dispersion, which enriched the amount of the surface species. In addition, Ce promoter increased the Na/W species reduction, but the reduction peak shifted to higher temperature. Stability test of 5wt%Ce catalyst indicated suitable performance and stability. The selectivity and yield of C2+ hydrocarbons after 50 h operation reached 65.5% and 19.6%, respectively, at 840 ℃ over 5wt%Ce-2wt%Mn-5wt%Na2WO4/SiO2 catalyst. | Seyed Mehdi Kamali Shahri Ali Nakhaei Pour | 2010 | Journal of Natural Gas Chemistry2010，19，1： | 3 |
| 6 | Deactivation studies of bifunctional Fe-HZSM5 catalyst in Fischer-Tropsch process显示文摘A physical mixture of alkali-promoted iron catalyst with binder based on Fischer-Tropsch synthesis and an acidic co-catalyst (HZSM5) for syngas conversion to hydrocarbons was studied in a fixed bed micro reactor. Deactivation data were obtained during the synthesis over a 1400 h period. The deactivation studies on iron catalyst showed that this trend followed the phase transformation Fe2.2C ( ε′) → Fe5C2 (χ) → Fe3C (θ), and the final predominant phase of the catalyst was Fe3C (θ). Deactivation of zeolite component in bifunctional catalyst may be caused by coking over the zeolitic component, dealumination of zeolite crystals, and migration of alkali promoters from iron catalyst under synthesis conditions. The deactivation rate of iron catalyst was also obtained. | Ali Nakhaei Pour Seyed Mehdi Kamali Shahri Yahya Zamani Mohammad Irani Shohreh Tehrani | 2008 | Journal of Natural Gas Chemistry2008，17，3： | 3 |
| 7 | 固溶处理对可生物降解Mg-6Zn合金腐蚀性能的影响(英文)显示文摘对可生物降解二元Mg-6Zn合金进行固溶处理,来评价获得的显微组织变化对合金降解速率的影响及其相关机理。在350°C条件下固溶处理6-48 h。采用光学显微镜、扫描电镜、能量色散X射线光谱仪和X射线衍射仪分析铸态和固溶处理后试样。在37°C的模拟体液中进行浸泡和电化学测试,评价其抗腐蚀性。为保证腐蚀测试的结果,对p H值进行测试。结果发现,大于24 h的固溶处理,金属间化合物相溶解于基体中,并产生了近单晶相组织。金属间化合物相的减少导致阴极区/阳极区比减小且腐蚀率降低。电化学和失重测试结果表明,延长固溶处理时间可提高合金的抗腐蚀性。经350°C固溶处理24 h后,铸态合金的抗腐蚀性提高了60%以上。另外,逐渐减少的金属间化合物相和伴随的低p H值上升,降低了腐蚀速率。对于Mg-Zn合金作为生物可降解移植材料的应用,固溶处理是一种可以提高腐蚀性的工艺。 | Seyed Morteza Ghaffari SHAHRI Mohd Hasbullah IDRIS Hassan JAFARI Babak GHOLAMPOUR Mahtab ASSADIAN | 2015 | Transactions of Nonferrous Metals Society of China2015，25，5： | 3 |
| 8 | Analysis of Fractional-order Linear Systems with Saturation Using Lyapunov's Second Method and Convex Optimization显示文摘In this paper,local stability and performance analysis of fractional-order linear systems with saturating elements are shown,which lead to less conservative information and data on the region of stability and the disturbance rejection.Then,a standard performance analysis and global stability by using Lyapunov's second method are addressed,and the introduction of Lyapunov's function candidate whose sub-level set provide stability region and performance with a restricted state space origin is also addressed.The results include both single and multiple saturation elements and can be extended to fractional-order linear systems with any nonlinear elements and nonlinear noise that satisfy Lipschitz condition.A noticeable application of these techniques is analysis of control fractional-order linear systems with saturation control inputs. | Esmat Sadat Alaviyan Shahri Saeed Balochian | 2015 | International Journal of Automation and computing2015，12，4： | 3 |
| 9 | Linear and nonlinear torsional free vibration of functionally graded micro/nano-tubes based on modified couple stress theory显示文摘The linear and nonlinear torsional free vibration analyses of functionally graded micro/nano-tubes(FGMTs) are analytically investigated based on the couple stress theory.The employed non-classical continuum theory contains one material length scale parameter,which can capture the small scale effect.The FGMT model accounts for the through-radius power-law variation of a two-constituent material.Hamilton's principle is used to develop the non-classical nonlinear governing equation.To study the effect of the boundary conditions,two types of end conditions,i.e.,fixed-fixed and fixed-free,are considered.The derived boundary value governing equation is of the fourthorder,and is solved by the homotopy analysis method(HAM).This method is based on the Taylor series with an embedded parameter,and is capable of providing very good approximations by means of only a few terms,if the initial guess and the auxiliary linear operator are properly selected.The analytical expressions are developed for the linear and nonlinear natural frequencies,which can be conveniently used to investigate the effects of the dimensionless length scale parameter,the material gradient index,and the vibration amplitude on the natural frequencies of FGMTs. | A.R.SETOODEH M.REZAEI M.R.ZENDEHDEL SHAHRI | 2016 | Applied Mathematics and Mechanics(English Edition)2016，37，6： | 2 |
| 10 | Fatigue analysis of friction stir welded aluminium profile using critical distance显示文摘 | SHAHRI M M SANDSTR M R | 2010 | International Jour- nal of Fatigue2010，32，： | 1 |
| 11 | Efficient photoehemieal water splitting by a chemically modified n-TiO2显示文摘 | Khan S U M AI- Shahry M Ingler W B | 2002 | Science2002，297，5590： | 1 |
| 12 | Detecting the spatial-temporal autocorrelation among crash frequencies in urban areas显示文摘 | Matkan A A Mohaymany A S Shahri M | 2013 | Can J Civ Eng2013，40，： | 1 |
| 13 | Influence of modification,solidification conditions and heat treatment on the microstructure and mechanical properties of A356 aluminum alloy显示文摘 | Shabestari S G Shahri F | 2004 | Journal of Materials Science2004，39，： | 1 |
| 14 | Efficient photochemical water splitting by a chemically modified n-TiO2 显示文摘 | S U M Khan M Shahry | 2002 | Science2002，297，5590： | 1 |
| 15 | Efficient Photochemical Water Splitting by a Chemically Modified n - TiO2 显示文摘 | Khan S U M A1 - Shahry M Ingler W B Jr | 2002 | Science2002，297，22： | 1 |
| 16 | E-CMS:A new design spectrum for nuclear structures in high levels of seismic hazard显示文摘 | Mousavi M Shahri M Azarbakht A | 2012 | Nuclear Engineering and Design2012，252，： | 1 |
| 17 | Catalytic behaviors of bifunctional Fe-HZSM-5 catalyst in FischerTropsch synthesis显示文摘 | Pour A N Zare M Kamali Shahri S M Zamani Y Alaei M R | | 0，，06： | 1 |
| 18 | Effect of Mg, La and Ca promoters on the structure and cat- alytic behavior of iron-based catalysts in Fischer-Tropsch synthesis 显示文摘 | Nakhaei Pour A Shahri S M K Bozorgzadeh H R | 2008 | Applied Catalysis A : General2008，348，： | 1 |
| 19 | Eliminating duplicates in information integration: an adaptive, extensible framework显示文摘 | Shahri H H | 2006 | IEEE Intelligent Systems2006，12，5： | 1 |
| 20 | Efficient Photochemical Water Splitting by a Chemically Modified n-TiO2 显示文摘 | Khan S U M Shahry M A Ingler W B J | 2002 | Science2002，297，： | 1 |
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