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| 1 | Al6013/Mg搅拌摩擦焊接的材料流动及相变(英文)显示文摘研究搅拌摩擦焊接铝合金6013和纯镁板在接头界面处的材料流动及相变。将铝合金6013和纯镁板分别放置在焊缝的前进侧和返回侧,搅拌针放在焊缝中央偏向铝合金侧1mm处,可以获得无缺陷的焊缝。为了研究搅拌摩擦焊时材料流动情况,将钢丸嵌入焊接材料中作为示踪材料,焊接完成后,采用X射线分析钢丸在材料中的位置。结果表明,嵌在前进侧材料中的钢丸焊后进入了返回侧材料中,而嵌在返回侧材料中的钢丸仍留在返回侧中。对焊接试样进行热处理,研究热处理对焊接接头力学性能的影响和接头处金属间化合物层的生成情况。结果表明,在接头界面处生成了2种金属间化合物:Al3Mg2和Al12Mg17。 | Pooya POURAHMAD Mehrdad ABBASI | 2013 | Transactions of Nonferrous Metals Society of China2013，23，5： | 16 |
| 2 | Characterizing the influence of stress-induced microcracks on the laboratory strength and fracture development in brittle rocks using a finite-discrete element method-micro discrete fracture network FDEM-μDFN approach显示文摘Heterogeneity is an inherent component of rock and may be present in different forms including mineral heterogeneity,geometrical heterogeneity,weak grain boundaries and micro-defects.Microcracks are usually observed in crystalline rocks in two forms:natural and stress-induced;the amount of stressinduced microcracking increases with depth and in-situ stress.Laboratory results indicate that the physical properties of rocks such as strength,deformability,P-wave velocity and permeability are influenced by increase in miciocrack intensity.In this study,the finite-discrete element method(FDEM)is used to model microcrack heterogeneity by introducing into a model sample sets of microcracks using the proposed micro discrete fracture network(μDFN) approach.The characteristics of the microcracks required to create μDFN models are obtained through image analyses of thin sections of Lac du Bonnet granite adopted from published literature.A suite of two-dimensional laboratory tests including uniaxial,triaxial compression and Brazilian tests is simulated and the results are compared with laboratory data.The FDEM-μDFN models indicate that micro-heterogeneity has a profound influence on both the mechanical behavior and resultant fracture pattern.An increase in the microcrack intensity leads to a reduction in the strength of the sample and changes the character of the rock strength envelope.Spalling and axial splitting dominate the failure mode at low confinement while shear failure is the dominant failure mode at high confinement.Numerical results from simulated compression tests show that microcracking reduces the cohesive component of strength alone,and the frictional strength component remains unaffected.Results from simulated Brazilian tests show that the tensile strength is influenced by the presence of microcracks,with a reduction in tensile strength as microcrack intensity increases.The importance of microcrack heterogeneity in reproducing a bi-linear or S-shape failure envelope and its effects on the mechanisms leading to spalling damage near an underground opening are also discussed. | Pooya Hamdi Doug Stead Davide Elmo | 2015 | Journal of Rock Mechanics and Geotechnical Engineering2015，7，6： | 6 |
| 3 | Application of artificial neural networks for predicting the impact of rolling dynamic compaction using dynamic cone penetrometer test results显示文摘Rolling dynamic compaction(RDC),which involves the towing of a noncircular module,is now widespread and accepted among many other soil compaction methods.However,to date,there is no accurate method for reliable prediction of the densification of soil and the extent of ground improvement by means of RDC.This study presents the application of artificial neural networks(ANNs) for a priori prediction of the effectiveness of RDC.The models are trained with in situ dynamic cone penetration(DCP) test data obtained from previous civil projects associated with the 4-sided impact roller.The predictions from the ANN models are in good agreement with the measured field data,as indicated by the model correlation coefficient of approximately 0.8.It is concluded that the ANN models developed in this study can be successfully employed to provide more accurate prediction of the performance of the RDC on a range of soil types. | R.A.T.M. Ranasinghe M.B. Jaksa Y.L. Kuo F. Pooya Nejad | 2017 | Journal of Rock Mechanics and Geotechnical Engineering2017，9，2： | 5 |
| 4 | Enhanced intracellular delivery and controlled drug release of magnetic PLGA nan-oparticles modified- with transferrin显示文摘 | Yan-na CUI Qing-xing xu Pooya DAVOODI De-ping WANG Chi-Hwa WANG | 2017 | Acta Pharmacologica Sinica2017，38，6： | 4 |
| 5 | Role of neural precursor cells in promoting repair following stroke显示文摘茎为中风的治疗的基于房间的治疗收到了可观的注意。二个女人走近到基于房间的治疗被拿了的茎:外长的干细胞的移植,和内长的神经的茎和祖先房间的激活(一起称为的神经先锋) 。检验外长的细胞的移植的研究证明了神经的茎和祖先细胞导致最临床上有希望的结果。神经先锋的内长的激活也基于居民先锋房间有固有的能力增殖,移居并且区分进在未受损伤的成年大脑的成熟神经原的事实被探索了。研究表明了这些神经先锋房间行为能被激活跟随击,神经先锋由此将在数字膨胀,移居到梗塞地点并且区分进神经原。然而,这天生的回答是不够的导致功能的恢复,使提高支持织物修理和功能的恢复的内长的先锋的激活必要。此处,我们将讨论有内长的修理的一个焦点的基于房间的途径伤害了治疗中风的茎的当前的状态大脑。 | Pooya DIBAJNIA Cindi M MORSHEAD | 2013 | Acta Pharmacologica Sinica2013，34，1： | 3 |
| 6 | 颈五针穴微针刀治疗颈性眩晕的效果评价显示文摘目的:观察颈五针穴微针刀治疗颈性眩晕的临床疗效。方法:将黄石爱康医院中医科就诊的100例颈性眩晕患者随机分为观察组50例、对照组50例,分别采用微针刀治疗和针刺治疗,对比两组治疗效果。结果:观察组治愈27例,好转21例,无效2例,总有效率96.00%(48/50);对照组治愈19例,好转20例,无效11例,总有效率78.00%(39/50)。两组总有效率比较,差异有统计学意义(P <0.05)。结论:颈五针穴微针刀治疗颈性眩晕的疗效显著。 | 贾琼珍 Jia Linlin Pooya Safaei Zahra Kazemipour | 2020 | 中医临床研究2020，12，18： | 2 |
| 7 | A multifunctional rock testing system for rock failure analysis under different stress states: Development and application显示文摘The stress state in a rock mass is complex. Stress redistribution around underground excavation may lead to various failure modes, including compressive-shear, tensile-shear, and tensile failures. The ability to perform laboratory tests with these complex stress states is significant for establishing new strength criteria. The present paper introduces a new rock testing system with “tensile-compressive-shear”loading functions. The device includes bi-directional and double-range hydraulic cylinders, auxiliary loading equipment, and roller rows that can perform direct compressive-shear tests, direct tensile tests,and direct tensile-shear tests. The testing system provides maximum vertical and lateral loading forces of2000 k N and allows testing cubical rock specimens with dimensions of 0.5 m × 0.5 m × 0.5 m. The performance of the testing machine was evaluated by testing a rock-like material based on cement mortar under compressive-shear, tensile, and tensile-shear stress states. The failure process and deformation characteristics were monitored during loading using acoustic emission(AE) transient recorder,piezoelectric AE sensors, a high-speed camera, and a thermal infrared camera. The failure mechanism was investigated by analyzing AE counts, AE amplitude, strain, and temperature changes on the rock specimen surface. The test results confirmed that the testing system could successfully simulate the abovementioned stress path. The AE counts and amplitude responses were influenced by different failure modes. The temperature response during the compressive-shear test indicated the development of a high-temperature band on the rock specimen surface. In contrast, a negligible temperature change was observed during the tensile and tensile-shear tests. The newly developed multifunctional rock testing system allows laboratory tests under various failure modes. The monitoring results of multiple variables during rock failure tests provide valuable information on failure characteristics. | Shucai Li Jie Hu Florian Amann Liping Li Hongliang Liu Shaoshuai Shi Pooya Hamdi | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，5： | 2 |
| 8 | Hybrid algorithms for handling the numerical noise in topology optimization显示文摘This paper presents new hybrid methods for the identification of optimal topologies by combining the teaching-learning based optimization(TLBO)and the method of moving asymptotes(MMA).The topology optimization problem is parameterizing with a low dimensional explicit method called moving morphable components(MMC),to make the use of evolutionary algorithms more efficient.Gradient-based solvers have good performance in solving large-scale topology optimization problems.However,in unconventional cases same as crashworthiness design in which there is numerical noise in the gradient information,the uses of these algorithms are unsuitable.The standard evolutionary algorithms can solve such problems since they don’t need gradient information.However,they have a high computational cost.This paper is based upon the idea of combining metaheuristics with mathematical programming to handle the probable noises and have faster convergence speed.Due to the ease of computations,the compliance minimization problem is considered as the case study and the artificial noise is added in gradient information. | Pooya Rostami Javad Marzbanrad | 2020 | Acta Mechanica Sinica2020，36，2： | 2 |
| 9 | Evaluation of the incidence of sensorineural heating loss in beta-thalassemia major patients under regular chelation therapy with desferrioxamine 显示文摘 | Karimi M Asadi Pooya AA Khademi B | 2002 | Acta Haematol2002，108，2： | 1 |
| 10 | Application of multi-dimensional procurement auction in?single-period inventory models显示文摘 | Pooya Farahvash Tayfur Altiok | 2008 | Annals of Operations Research2008，，1： | 1 |
| 11 | Methyl donor deficiency impairs fatty acid oxidation through PGC-lalpha hypomethylation and decreased ER-alpha, ERR-alpha, and HNF-4alpha in the rat liver 显示文摘 | Pooya S Blaise S Moreno Garcia M | 2012 | J Hepatol2012，57，2： | 1 |
| 12 | An efficient online secondary path estimation for feedback active noise control systems 显示文摘 | Hamid H Pooya D | 2009 | Digital Signal Processing2009，19，2： | 1 |
| 13 | Gasification of lignocellulosic biomass in fluidized beds for renewable energy development: A review显示文摘 | Zainal Alimuddin Bin Zainal Alauddin Pooya Lahijani Maedeh Mohammadi Abdul Rahman Mohamed | 2010 | Renewable and Sustainable Energy Reviews2010，，9： | 1 |
| 14 | Current - sensing techniqu -es for DC-DC converters显示文摘 | Hassan Pooya Forghani - zadeh | 2002 | Midwest Syrup on Circuits Syst2002，，2： | 1 |
| 15 | Ash of palm empty fruit bunch as a natural catalyst for promoting the CO2 gasification reactivity of biomass char显示文摘 | Lahijani Pooya Zainal Zainal Alimuddin Mohamed Abdul Rahman | 2013 | Bioresource Technology2013，132，： | 1 |
| 16 | The efficacy of omega-3 fatty acid supplementation on plasma homocysteine and malondialdehyde levels of type 2 diabetic patients显示文摘 | Sh. Pooya M. Djalali Jalali A. Djazayery Jazayery A. Saedisomeolia M. Reza Eshraghian F. Toorang | 2009 | Nutrition Metabolism and Cardiovascular Diseases2009，，5： | 1 |
| 17 | Anal fistula plug and fibrin glue versus conventional treatment in repair of complex anal fistulas显示文摘 | Wiley Chung Pooya Kazemi David Ko Clare Sun Carl J. Brown Manoj Raval Terry Phang | 2009 | The American Journal of Surgery2009，，5： | 1 |
| 18 | On a cooperative advertising model for a supply chain with one manufacturer and one retailer显示文摘 | Amir A J Pooya H | 2012 | European Journal of Operational Research2012，219，2： | 1 |
| 19 | Retrospective analysis of canine miniature total hip prostheses显示文摘 | Warnock J J Dyce J Pooya H | 2003 | Vet Surg2003，32，3： | 1 |
| 20 | RUPSec: Extending Business Modeling and Requirments Disciplines of RUP for Developing Secure System 显示文摘 | POOYA JAFERIAN GOLNAZ ELAHI MOHAMMADEH SHIRAZI | 2005 | Computer Society2005，1，5： | 1 |
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