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| 1 | Micromechanics of breakage in sharp-edge particles using combined DEM and FEM显示文摘By combining DEM(Discrete Element Method)and FEM(Finite Element Method),a model is established to simulate the breakage of two-dimensional sharp-edge particles,in which the simulated particles are assumed to have no cracks.Particles can,however,crush during different stages of the numerical analysis,if stress-based breakage criteria are fulfilled inside the particles.With this model,it is possible to study the influence of particle breakage on macro-and micro-mechanical behavior of simulated angular materials.Two series of tests,with and without breakable particles,are simulated under different confining pressures based on conditions of biaxial tests.The results,presented in terms of micromechanical behavior for different confining pressures,are compared with macroparameters.The influence of particle breakage on microstructure of sharp-edge materials is discussed and the related confining pressure effects are investigated.Breakage of particles in rockfill materials are shown to reduce the anisotropy coefficients of the samples and therefore their strength and dilation behaviors. | Ahad Bagherzadeh-Khalkhali Ali Asghar Mirghasemi Soheil Mohammadi | 2008 | Particuology2008，6，5： | 8 |
| 2 | Recrystallization and mechanical properties of WE43 magnesium alloy processed via cyclic expansion extrusion显示文摘In this study, cyclic expansion extrusion(CEE), as a relatively new severe plastic deformation(SPD) process, is applied to a rare earth(RE) containing Mg alloy WE43. The effects of the processing temperature and the number of passes are also investigated. The results showed that dynamic recrystallization(DRX) occurred after CEE processing at 400°C, and a bimodal structure with ultrafine DRXed grains surrounded the unrecrystallized grains. However, the DRX at 330°C was retarded because of the existence of RE elements. The tensile tests showed that a simultaneous increase in the strength and the ductility of WE43 is obtained after CEE processing at 400°C via two passes. Furthermore, the highest ultimate tensile strength of 440 MPa was achieved after the second pass of CEE at 330°C, and the highest ductility of 21% was attained after the second pass of CEE at 400°C. The microhardness measurements showed that the hardness increased from HV 80 to HV 114 and HV 98 after two passes of CEE processing at 330 and 400°C, respectively. In conclusion, increasing the processing passes could increase the mechanical properties and the volume fraction of the recrystallized grains. Moreover, increasing the temperature reduced the strength and the microhardness even if the elongation increased. | Soheil Amani Ghader Faraji | 2018 | International Journal of Minerals,Metallurgy and Materials2018，25，6： | 7 |
| 3 | Prevalence of hepatitis C virus infection among hemodialysis patients in the Middle-East: A systematic review and meta-analysis显示文摘AIM To determine hepatitis C virus(HCV)infection prevalence in each country of the Middle-East and the overall prevalence of the region.METHODS 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 2016.We selected only cross-sectional studies that had proper sampling and measurement methods as well as a valid statistical analysis.RESULTS After screening of 7311 documents,56 studies were selected reporting the prevalence of HCV infection among hemodialysis patients from 10 countries of the region.Seven 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 mentioned.We performed the meta-analysis and determined the prevalence rates for each country as well as the whole region.The 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 lowest.Further investigations are still needed to provide more reliable databases,find main risk factors,and to improve diagnosis and treatment plans,particularly in higher prevalent countries.CONCLUSION Controlling the prevalence and improving the management methods of HCV infection among hemodialysis patients are of a great concern in the Middle-East region. | Soheil Ashkani-Esfahani Seyed Moayed Alavian Mohammad Salehi-Marzijarani | 2017 | World Journal of Gastroenterology2017，23，1： | 7 |
| 4 | Comparison of road traffic fatalities and injuries in Iran with other countries显示文摘 | Mohammad R Rasouli Mohsen Nouri Mohammad-Reza Zarei Soheil Saadat Vafa Rahimi-Movaghar | 2008 | Chinese Journal of Traumatology2008，11，3： | 7 |
| 5 | Single-step transepithelial photorefractive keratectomy in high myopia:qualitative and quantitative visual functions显示文摘AIM:To investigate quantitative and qualitative optical outcomes of single-step transepithelial photorefractive keratectomy(Trans PRK)in high myopia.METHODS:In a prospective interventional case-series,30 eyes with high myopia(-6.00 to-8.75 D)with(up to-3.00 D)or without astigmatism were enrolled from Bina Eye Hospital,Tehran,Iran. One-step Trans PRK was performed with aberration-free aspherical optimized profile and SCHWIND AMARIS 500 laser. One-year follow-up results for refraction,visual acuities,vector analysis,ocular wavefront(OWF)and corneal wave-front(CWF)higher order aberrations(HOA),contrast sensitivity(CS),and postoperative haze were assessed.RESULTS:After the surgery,both photopic and mesopic CSs significantly improved(both P<0.001). We detected significant induction of OWF coma and trefoil(P<0.001 for both)HOAs; CWF coma(P=0.002),spherical(P<0.001),and tetrafoil(P=0.003)HOAs in 6 mm analysis diameter; and CWF trefoil(P=0.04)HOA in 4 mm analysis diameter. The range of mean induction observed for various HOAs was0.005-0.11 μm. The 86.7% of eyes reached an uncorrected distance visual acuity of 20/20 or better; 96.7% of eyes were within ±0.5 D of targeted spherical refraction. In vector analysis,mean correction index value was 1.03 and mean index of success was 0.22. By 12mo after the operation,no eye lost any number of corrected distancevisual acuity lines. We detected no corneal haze greater than 1^+ throughout the follow-up.CONCLUSION:Our findings show promising effects of single-step Trans PRK on quality of vision in high myopic eyes. It also improves refraction and visual acuity. | Soheil Adib-Moghaddam | 2017 | International Journal of Ophthalmology(English edition)2017，10，3： | 7 |
| 6 | Parametric Study of Two-Body Floating-Point Wave Absorber显示文摘在这份报纸,我们在场深水里的一个点波浪吸收器的全面数字模拟。分析在频率和时间领域被执行。变换器与在举方向的自由的一度是一个二身体的浮点吸收器(FPA ) 。它的二部分被一个线性 mass-spring-damper 系统连接。在这研究使用的商业 ANSYS-AQWA 软件表现很好在考虑确认。速度潜力被假定不可压缩、无旋的流动获得。因此,我们在精力变换和设备效率上调查了波浪特征的效果,包括波浪高度和波浪时期,以及设备直径,草稿,几何学,和抑制系数。验证模型,我们从类似的实验把我们的数字结果与那些作比较。当考虑特定的条件时,我们的学习结果能清楚地帮助最大化变换器效率。 | Atena Amiri Roozbeh Panahi Soheil Radfar | 2016 | Journal of Marine Science and Application2016，15，1： | 6 |
| 7 | Numerical analysis of rock fracturing by gas pressure using the extended finite element method显示文摘High energy gas fracturing is a simple approach of applying high pressure gas to stimulate wells by generating several radial cracks without creating any other damages to the wells.In this paper,a numerical algorithm is proposed to quantitatively simulate propagation of these fractures around a pressurized hole as a quasi-static phenomenon.The gas flow through the cracks is assumed as a one-dimensional transient flow,governed by equations of conservation of mass and momentum.The fractured medium is modeled with the extended finite element method,and the stress intensity factor is calculated by the simple,though sufficiently accurate,displacement extrapolation method.To evaluate the proposed algorithm,two field tests are simulated and the unknown parameters are determined through calibration.Sensitivity analyses are performed on the main effective parameters.Considering that the level of uncertainty is very high in these types of engineering problems,the results show a good agreement with the experimental data.They are also consistent with the theory that the final crack length is mainly determined by the gas pressure rather than the initial crack length produced by the stress waves. | Majid Goodarzi Soheil Mohammadi Ahmad Jafari | 2015 | Petroleum Science2015，12，2： | 6 |
| 8 | Clayey soil stabilization using alkali-activated volcanic ash and slag显示文摘Lime and Portland cement are the most widely used binders in soil stabilization projects.However,due to the high carbon emission in cement production,research on soil stabilization by the use of more environmentally-friendly binders with lower carbon footprint has attracted much attention in recent years.This research investigated the potential of using alkali-activated ground granulated blast furnace slag(GGBS)and volcanic ash(VA)as green binders in clayey soil stabilization projects,which has not been studied before.The effects of different combinations of VA with GGBS,various liquid/solid ratios,different curing conditions,and different curing periods(i.e.7 d,28 d and 90 d)were investigated.Compressive strength and durability of specimens against wet-dry and freeze-thaw cycles were then studied through the use of mechanical and microstructural tests.The results demonstrated that the coexistence of GGBS and VA in geopolymerization process was more effective due to the synergic formation of N-A-S-H and C-(A)-S-H gels.Moreover,although VA needs heat curing to become activated and develop strength,its partial replacement with GGBS made the binder suitable for application at ambient temperature and resulted in a remarkably superior resistance against wet-dry and freeze-thaw cycles.The carbon embodied of the mixtures was also evaluated,and the results confirmed the low carbon footprints of the alkali-activated mixtures.Finally,it was concluded that the alkali-activated GGBS/VA could be promisingly used in clayey soil stabilization projects instead of conventional binders. | Hania Miraki Nader Shariatmadari Pooria Ghadir Soheil Jahandari Zhong Tao Rafat Siddique | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，2： | 5 |
| 9 | β-Cyclodextrin Immobilized onto Dowex Resin: A Unique Microvessel and Heterogeneous Catalyst in Nucleophilic Substitution Reactions显示文摘 | Kiasat, Ali Reza Zarinderakht, Nasrollah Sayyahi, Soheil | 2012 | Chinese Journal of Chemistry2012，30，3： | 4 |
| 10 | Dynamic Adaptive Finite Element Analysis of Acoustic Wave Propagation Due to Underwater Explosion for Fluid-structure Interaction Problems显示文摘在这份报纸,进附近的结构上的水和他们的效果里的远域爆炸波浪的繁殖的调查被执行。为远域结构,包围结构的液体的运动可以被假定小,允许管理液体方程的 linearization。这个问题的完全的分析必须在包围液体包含结构和爆炸波浪的繁殖的动态反应的同时的答案。在这研究,一个动态适应有限元素过程被建议。它到一个 2D 液体结构相互作用的解决方案的应用程序在时间域被调查。研究包括:一) 计算远地散布波浪由于在水下看情况时间的声学的波浪方程的爆炸包括答案, b ) 用联合 Euler-Lagrangian 途径的液体结构相互作用分析,和 c ) 适应有限元素过程采用错误估计,并且重新协调。时间的网孔改编被格子的本地新生基于压力功能的弯曲用时间依赖者错误指示物完成。作为结果,全面反应被一个动人的网孔更好比一个相等的一致网孔预言。另外,当精确性被改进时,为大问题的计算的费用被减少。 | Seyed Shahab Emamzadeh Mohammad Taghi Ahmadi Soheil Mohammadi Masoud Biglarkhani | 2015 | Journal of Marine Science and Application2015，14，3： | 4 |
| 11 | A collaborative approach for urban underground space development toward sustainable development goals:Critical dimensions and future directions显示文摘The utilization of urban underground space(UUS)offers an effective solution to urban problems but may also negatively affect urban development.Therefore,UUS development needs better concerted guidelines to coordinate various urban systems and the multiple components of the underground world.Sustainable Development Goals(SDGs),which should be viewed as important yardsticks for UUS development,do not explicitly mention urban underground space,although many of them are affected by both the positive and negative consequences of its development.To fill this gap,this review lays the foundations of relevant UUS concepts and uses exemplary cases to reveal that 11 out of 17 SDGs can be linked with UUS uses.These linkages also manifest that land administration,integrated planning,architectural design,and construction technology are critical dimensions for increasing the contributions of UUS to the realization of SDGs.To achieve multi-disciplinary synergies among these four critical dimensions,a collaborative approach framework based on spatial data infrastructure is required.Thus,this work provides academics and practitioners with a holistic view of sustainable UUS development. | Fang-Le PENG Yong-Kang QIAO Soheil SABRI Behnam ATAZADEH Abbas RAJABIFARD | 2021 | Frontiers of Structural and Civil Engineering2021，15，1： | 4 |
| 12 | Effect of curing, capillary action, and groundwater level increment on geotechnical properties of lime concrete: Experimental and prediction studies显示文摘Lime concrete and lime treatment are two attractive techniques for geotechnical engineers.However,researches have rarely been carried out to study the effects of moisture and capillary action due to increasing groundwater level on geotechnical properties of lime concrete.The aim of this study is to investigate the effects of curing time and degree of saturation on some of geotechnical properties of lime concrete such as unconfined compressive strength(UCS),secant modulus(E_S),failure strain,brittleness index(I_B),and deformability index(I_D) using unconfined compression tests.First of all,geotechnical and chemical properties of used materials were determined.After curing times of 14 d,28 d,45 d,and 60 d in laboratory condition,the specimens were exposed to saturation levels ranging from 0 to 100%.The results showed that the moisture and curing time have significant effects on the properties of lime concrete.Based on the results of scanning electron micrograph(SEM) test,it was observed that the specimen was characterized by a rather well-structured matrix since both the filling of a large proportion of the coarse-grained soil voids by clay and the pozzolanic activity of lime led to retaining less pore water in the specimen,increasing the UCS and E_S,and consequently resisting against swelling and shrinkage of the clay soil.Moreover,due to the pozzolanic reactions and reduction of water,by increasing the curing time and decreasing the degrees of saturation,UCS,E_S,and I_B increased,and I_D decreased.Based on the experimental results,a phenomenological model was used to develop equations for predicting the properties in relation to the ratio of degree of saturation/curing time.The results showed that there was a good correlation(almost R^2 > 90%) between the measured parameters and the estimated ones given by the predicted equations. | Mohammad Saberian Soheil Jahandari Jie Li Farzad Zivari | 2017 | Journal of Rock Mechanics and Geotechnical Engineering2017，9，4： | 3 |
| 13 | Advanced optimization of gas turbine aero-engine transient performance using linkage-learning genetic algorithm:PartⅡ,optimization in flight mission and controller gains correlation development显示文摘PartⅠhas illustrated the procedures to apply the Linkage Learning Genetic Algorithm(LLGA)in Gas Turbine Engine(GTE)controller gains tuning and generated the optimization results for runway conditions from idle to takeoff.However,the total pressure and temperature of the engine inlet vary as the changing of altitude and Mach number,which would lead to the variation in fuel flow supply regulation.As a result,the optimized gains in runway might not be suitable for other flight conditions.In order to maintain the optimal control performance,the GTE controller gains should be adjusted according to the flight conditions.This paper extends the application of the LLGA method to other flight conditions and then simulates a complete flight mission with different gains and weather condition configurations.For this purpose,the control parameters in the Simulink model of the GTE controller are first corrected by the weather condition in altitude.Then,a typical flight mission is defined and divided into different flight segments based on the altitude and Mach number configuration.One representative point is selected from each segment as the datum point for optimization process.After this step,the LLGA method is used to find the best gains combinations for different flight conditions and the differences in optimization effects for different flight conditions are analyzed subsequently.The simulation results show that the optimization effect of the control performance of each flight condition is dependent on the value of(θδ)~(1/2)and the optimal K_(pla)in some flight conditions is approximately equal to p hd times of the Kplavalue in sea level standard condition.Finally,the complete flight mission is simulated with different gains and weather condition configurations.The simulation results show that the engine performance has been greatly improved after optimization by LLGA in the transient state and the high altitude conditions.In other steady states,the optimization effect is not very obvious. | Yinfeng LIU Soheil JAFARI Theoklis NIKOLAIDIS | 2021 | Chinese Journal of Aeronautics2021，34，4： | 3 |
| 14 | Trauma care system in Iran显示文摘客观在伊朗的损害的高负担要求一个全面损伤照顾系统的建立。这份报纸的目的是关于部件和功能描述损伤系统的当前的地位。在一个损伤系统的所有部件的损伤系统的当前的地位通过与损伤专家和政策制造者一起的专家面板和半结构化的会见被描述的方法。当前结果,各种各样的组织涉及损害,而是损伤的一条综合系统途径的预防,管理和康复是相当缺乏的。在通过媒介,交通规定加强,医院照顾和 prehospital 服务的公共教育的区域有进行中的进步。同时,关于高风险组资助,立法和教育有差距。教育和前面的训练标准上的问题衬里医疗队和持续教育和评估还有待于被探讨。损伤登记在一些省被驾驶了,但是作为它需要开发得好的基础结构(关于职员,维护,金融资源) ,它还没在我们损伤照顾的系统被建立。看起来,有损伤的问题之一在伊朗在乎的结论是在损伤系统组织之中的协作的缺乏。尽管损伤病人的临床的管理在最近的十年在我们的国家改善了,减少损害的负担在一个损伤系统的上下文要求一条组织途径到损伤的预防和管理。 | Moussa Zargar Seyed Mohammad Reza Kalantar Motamedi Mojgan Karbakhsh Seyed Mohammad Ghodsi Vafa Rahimi-Movaghar Farzad Panahi Soheil Saadat Ali Khaji Seyed Mahdi Davachi Sarah Ganji Mahmoud Khodabandeh Shahab Abdollahi Far Morteza Abdollahi Mohammad Reza Zarei | 2011 | Chinese Journal of Traumatology2011，14，3： | 3 |
| 15 | A facile and convenient method for synthesis of alkyl thiocyanates under homogeneous phase transfer catalyst conditions显示文摘一个简单、环境地友好的方法用 tetrabutylammonium 溴化物(TBAB ) 为烷基卤化物的有效变换被描述到烷基 thiocyanate 为阶段转移催化剂。反应在水里发生并且在高收益供应相应烷基 thiocyanate。当反应的副产品被观察,没有进一步的纯化,产品在纯形式被获得,不为 isothiocyanates 的形成证实。 | Ali Reza Kiasat Rashid Badri Soheil Sayyahi | 2008 | Chinese Chemical Letters2008，19，11： | 3 |
| 16 | Preparation of a novel γ-FeOOH-GAC nano composite for decolorization of textile wastewater by photo Fenton-like process in a continuous reactor显示文摘 | Mohsen Sheydaei Soheil Aber Alireza Khataee | 2014 | A, Chemical2014，，： | 2 |
| 17 | Effect of Low-Pressure Nitrogen DC Plasma Treatment on the Surface Properties of Biaxially Oriented Polypropylene, Poly (Methyl Methacrylate) and Polyvinyl Chloride Films显示文摘In this study, commercial biaxially oriented polypropylene (BOPP), polyvinyl chloride (PVC) and poly (methyl methacrylate) (PMMA) films were treated with nitrogen plasma over different exposure times in a Pyrex tube surrounded by a DC variable magnetic field. The chemical changes that appeared on the surface of the samples were investigated using Fourier transform infrared (FT-IR) spectroscopy and attenuated total reflectance Fourier transform infrared (ATR- FTIR) spectroscopy after treatment for 2 min, 4 min and 6 min in a nitrogen plasma chamber. Effects of the plasma treatment on the surface topographies and contact angles of the untreated and plasma treated films were also analyzed by atomic force microscopy (AFM) and a contact angle measuring system. The results show that the plasma treated films become more hydrophilic with an enhanced wettability due to the formation of some new polar groups on the surface of the treated films. Moreover, at higher exposure times, the total surface energy in all treated films increased while a reduction in contact angle occurred. The behavior of surface roughness in each sample was completely different at higher exposure times. | S. Hamideh MORTAZAVI Mahmood GHORANNEVISS Soheil PILEHVAR Sina ESMAEILI Shamim ZARGHAM S. Ebrahim HASHEMI Hamzeh JODAT | 2013 | Plasma Science and Technology2013，15，4： | 2 |
| 18 | A novel and efficient synthesis of alkyl thiocyanates from alkyl halides in water using phase transfer catalysts显示文摘1,4 二度(triphenylphosphonium )-2-butene 二氯化物(BTPBDC ) 和 1,4 二度(triphenyl 磷根)-2-butene dithiocyanate (BTPBDT ) 被准备并且用作阶段转移催化剂。烷基卤化物在水里在温和反应条件下面高效地被变换成相应烷基 thiocyanates。为反应的副产品被观察的 isothiocyanates 的形成的没有证据。 | Maryam Gorjizadeh Soheil Sayyahi | 2011 | Chinese Chemical Letters2011，22，6： | 2 |
| 19 | Ground characterization and roof mapping: Online sensor signal-based change detection显示文摘Measurement while drilling systems are becoming an important part of excavation operations for rock characterization and ground support design that require reliable information on rock strength and location & frequency of joints or voids. This paper focuses on improving rock characterization algorithms for instrumented roof-bolter systems. For this purpose, an improved void detection algorithm is proposed,where the underlying theory is built upon the concept of mean change detection based on the feed pressure signals. In addition, the application of acoustic sensing for void detection is examined and it is shown that the variance of the filtered acoustic signal is correlated to the strength of the material being drilled. The proposed algorithm has been validated on the data collected from full-scale drilling tests in various concrete and rock samples at the J. H. Fletcher facility. | Bahrampour Soheil Rostami Jamal Ray Asok Naeimipour Ali Collins Craig | 2015 | International Journal of Mining Science and Technology2015，25，6： | 2 |
| 20 | Assessment of mechanism, type and severity of injury in multiple trauma patients: A cross sectional study of a trauma center in Iran显示文摘PurposeTo 精确地与在马什哈德指 Hasheminejad 大学医院的紧急情况部门的多重损伤在损伤 center.MethodsPatients 的伊朗的多重损伤病人估计损害的机制,类型和严厉,伊朗,从 2013 年 3 月进入了这生气部分研究到 2013 年 12 月。有损害严厉 20 的所有病人(ISS )> 9 在这研究被包括。数据分析被社会科学统计套装软体软件(版本 11.5 ) 和不到 0.05 被认为 differences.ResultsAmong 同样重要的 P 值执行 6306 个就医的损伤病人在这个时期期间, 148 有的 ISS > 9。男女比率是 80% 。病人的吝啬的年龄是(33.5 ??????? ‥??? ┲吗?? | Hamidreza Reihani Hossein Pirazghandi Ehsan Bolvardi Mohsen Ebrahimi Elham Pishbin Koorosh Ahmadi Mahdi Safdarian Soheil Saadat Vafa Rahimi-Movaghar | 2017 | Chinese Journal of Traumatology2017，20，2： | 2 |
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