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Rapid high-temperature synthesis of SAPO-34 nanoparticles

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Particuology 2011年第5期9卷 452-457页

作者： Mahdi Dargahi Hossein Kazemian Mohammad Soltanieh Sohrab Rohani Morteza.hosseinpour Department of Chemical Engineering McGill University Department of Chemical and Petroleum Engineering Sharif University of Technology Department of Chemical and Biochemical Engineering Faculty of EngineeringThe University of Western Ontario Department of Mechanical Engineering Sharif University of Technology

Decreasing particle size results in larger increase of external surface area and shorter diffusion path, both reducing mass and heat transfer resistances in catalysis and sorption. A rapid high-temperature hydrothermal synthesis method was developed to synthesize uniform nanoparticles of SAPO-34 zeolite with high crystallinity. To investigate the effects of temperature and synthesis time on purity and crys- tallinity of the final products, the crystallization temperature was increased from 468 to 673 K while the synthesis time was decreased from 24h to 45 rain. The products were characterized by XRD and SEM techniques. It was found that high temperature and short synthesis time reduce the particle size and change the morphology of the SAPO-34 final product.

关键词： SAPO-34 Nanoparticles High-temperature synthesis XRDSEM

A probabilistic model for assessing the reliability of wind farms in a power system

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第6期14卷 464-474页

作者： Mostafa.hosseinpour Habib RAJABI MASHHADI Mohammad Ebrahim HAJIABAD Faculty of Engineering Department of Electrical EngineeringFerdowsi University of MashhadMashhadIran Center of Excellence on Soft Computing and Intelligent Information Processing Ferdowsi University of MashhadMashhadIran

Modeling the generation of a wind farm and its effect on power system reliability is a challenging task,largely due to the random behavior of the output *** this paper,we propose a new probabilistic model for assessing the reliability of wind farms in a power system at hierarchical level II(HLII),using a Monte Carlo *** proposed model shows the effect of correlation between wind and load on reliability *** can also be used for identifying the priority of various points of the network for installing new wind farms,to promote the reliability of the whole system.A simple grid at hierarchical level I(HLI) and a network in the north-eastern region of Iran are *** results showed that the correlation between wind and load significantly affects the reliability.

关键词： Wind farm Reliability Priority Probabilistic model

A comparative study for the performance of encased granular columns

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第2期11卷 379-388页

作者： Iman hosseinpour Cristian Soriano Marcio S.S.Almeida Department of Civil Engineering Faculty of EngineeringThe University of Guilan Graduate School in Research and Engineering (COPPE) Federal University of Rio de Janeiro (UFRJ)

This paper describes a three-dimensional(3D) numerical analysis of a test embankment on geotextileencased columns(GECs), in comparison with two-dimensional(2D) axisymmetric and plane strain analyses. The 3D numerical analysis was performed considering a rectangular strip under the embankment centerline. The 2D analysis was also carried out using axisymmetric unit cell and plane strain *** results indicated that the adopted 3D strip model represented well the measured deformations and pore pressure evolution during embankment construction and post-contraction *** the unit cell model, both plane strain and 3D analyses could properly determine the settlement profile along the embankment base as well as the profile of the horizontal soil deformation beneath the embankment toes. The plane strain analysis, however, was not able to compute the geotextile ring force which might be simply calculated using the axisymmetric unit cell approach. The paper also showed that, due to horizontal boundary fixities applied to the embankment borders, the unit cell model clearly underestimated the tension developed in the basal geogrid.

关键词： Soft soil Embankment Encased columns Geosynthetic Numerical analysis

Numerical evaluation of sample size effect on the stress-strain behavior of geotextile-reinforced sand

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第8期11卷 555-562页

作者： I.hosseinpour S.H.MIRMORADI A.BARARI M.OMIDVAR Department of Civil Engineering University of Mazandaran Department of Civil Engineering Aalborg University Engineering Faculty Golestan University

This paper studies the effect of sample size on the stress-strain behavior and strength characteristics of geotextile reinforced sand using the finite element numerical analysis. The effect of sample size was investigated by studying the effects of varying the number of geotextile layers, the confining pressure and the type of geotextile. Modeling was performed on samples with five different diameters: 38, 100, 200, 500 and 600 mm. The elastic-plastic Mohr-Coulomb model was used to simulate sand behavior. Results showed that small-sized samples show higher values of peak strength and higher axial strain at failure in comparison with large-sized samples. The size effect on the behavior of samples became further apparent when the number of geotextile layers was increased or the confining pressure was decreased. In addition, the results indicated that the magnitude of the size effect on the mechanical behavior of reinforced sand decreases with an increase in the sample size.

关键词： Reinforced sand Geotextile Peak strength Mohr-Coulomb Size effect

A new method to determine the synergistic effects of area ratio and microstructure on the galvanic corrosion of LAS A508/309 L/308 L SS dissimilar metals weld

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Journal of Materials Science & Technology 2021年第19期78卷 38-50页

作者： Bright O.Okonkwo Hongliang Ming Jianqiu Wang En-Hou Han Ehsan Rahimi Ali Davoodi Saman hosseinpour CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Materials and Metallurgical Engineering Department Faculty of EngineeringFerdowsi University of MashhadMashhad ***Iran Polytechnic Department of Engineering and Architecture University of Udine33100 UdineItaly John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA Institute of Particle Technology(LFC) Friedrich-Alexander-Universitdt-Erlangen-Numberg(FAU)91058 ErlangenGermany

The synergistic effects of area ratio and microstructure on the galvanic corrosion of A508/309 L/308 L dissimilar metals weld(DMW)are studied by a multi-analytical *** was demonstrated that decreasing the anode/cathode surface area ratio obviously enhances the corrosion rate of A508,both locally and *** analyses of the AFM results enabled quantitative comparison of the corrosion behaviour of the different surface *** was revealed that in the galvanic interaction of the DMW,the grain refined region corrodes most,followed by the partial grain refined region and base metal matrix of the A508,*** electrochemical localization index(LI)estimation method and AFM analysis both confirmed the presence of a mixed(localized and uniform)corrosion phenomenon occurring on the surface of the A508 anode metal in the galvanic interaction of the dissimilar ***,the degree of synergism equation was utilized to describe the synergistic effects of anode/cathode area ratio and the microstructure of the samples on the galvanic corrosion of LAS A508/309 L/308 L SS DMW.

关键词： Low alloy steel Stainless steel SEM AFM Galvanic corrosion Inclusion

Hierarchical dual-porous hydroxyapatite doped dendritic mesoporous silica nanoparticles based scaffolds promote osteogenesis in vitro and in vivo

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Nano Research 2021年第3期14卷 770-777页

作者： Chang Lei Yuxue Cao Sepanta.hosseinpour Fang Gao Jingyu Liu Jianye Fu Reuben Staples Saso Ivanovski Chun Xu Australian Institute for Bioengineering and Nanotechnology The University of QueenslandSt.LuciaQLD4072Australia School of Dentistry The University of QueenslandHerstonQLD4006Australia School of Chemistry Physics and Mechanical EngineeringScience and Engineering FacultyQueensland University of Technology(QUT)BrisbaneQLD4001Australia

Biomaterial based scaffolds for treating large bone defects require excellent biocompatibility and *** we report on the fabrication of hydroxyapatite-dendritic mesoporous silica nanoparticles(HA-DMSN)based scaffolds with hierarchical micro-pores(5µm)and nano-pores(6.4 nm),and their application for bone *** in vitro studies demonstrated good biocompatibility of dissolution extracts,as well as enhanced osteogenic potential indicated by dose-dependent upregulation of bone marker gene expression(osteocalcin gene(OCN),osteopontin gene(OPN),collagen type I alpha 1 gene(CoL1A1),runt-related transcription factor 2 gene(RUNX2),and integrin-binding sialoprotein gene(IBSP)),alkaline phosphatise(ALP)activity,and alizarin red *** in vivo studies showed that HA-DMSN scaffolds significantly increased bone formation in a rat cranial bone defect model after 4 weeks *** study provides a simple method to fabricate promising inorganic scaffolds with hierarchical pores for bone tissue engineering.

关键词： tissue engineering scaffolds hydroxyapatite dendritic mesoporous silica nanoparticles

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一种量化的可持续产品发展方法(英文)

Journal of Southeast University(English Edition) 2015年第1期31卷 87-93页

作者： Arash hosseinpour 彭庆金顾佩华 Department of Mechanical Engineering University of Manitoba 汕头大学机械电子工程系汕头515063

提出了基于量化的可持续产品设计和评估方法.该方法使用产品设计的多标准来满足可持续产品从定性到定量的设计要求.建立的可持续发展产品定量方法集成了质量功能展开的概念与生命周期评估方法.它同时考虑客户需求和可持续发展的要求,并... 详细信息

提出了基于量化的可持续产品设计和评估方法.该方法使用产品设计的多标准来满足可持续产品从定性到定量的设计要求.建立的可持续发展产品定量方法集成了质量功能展开的概念与生命周期评估方法.它同时考虑客户需求和可持续发展的要求,并通过公理设计映射和基准测试方法将这些需求变为设计细节.将提出的方法应用在轮椅设计中.其设计基准选用了4种常用的轮椅并将其根据客户需求和可持续要求评级.设计矩阵用来确定轮椅功能要求和设计参数的关系.与最好的基准产品相比,所设计的轮椅可以降低成本13.8%,环境足迹18.55%,质量4.5%,以及组件数量2.2%.

关键词：可持续性产品设计生命周期评估基准测试

Prospective study of total and various types of vegetables and the risk of metabolic syndrome among children and adolescents

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World Journal of Diabetes 2019年第6期10卷 362-375页

作者： Somayeh hosseinpour-Niazi Bahar Bakhshi Ekbal Betru Parvin Mirmiran Mina Darand Fereidoun Azizi Nutrition and Endocrine Research center Research Institute for Endocrine Sciences Shahid Beheshti University of Medical Sciences Tehran 19395-4763 Iran Department of Clinical Nutrition and Dietetics Faculty of Nutrition Sciences and Food Technology National Nutrition and Food Technology Research Institute Shahid Beheshti University of Medical Sciences Tehran 19395-4763 Iran Endocrine Research Center Research Institute for Endocrine Sciences Shahid Beheshti University of Medical Sciences Tehran 19395-4763 Iran

BACKGROUND Data available on the association between consumption of various types of vegetables and metabolic syndrome (MetS) remain inconsistent. AIM To investigate the association between the intake of various types of vegetables and MetS among children and adolescents and MetS. METHODS The Tehran Lipid and Glucose Study cohort included 424 children and adolescents initially free of MetS. At the 3.6 year follow-up, 47 new cases of MetS were identified. A 168-item semi-quantitative food-frequency questionnaire was used to collect information about total and various types of vegetables consumed, including allium-, green leafy-, fruity-, root-, stalk-, starchy-, potatoes, and cabbage. MetS was defined according to the Cook et al[32] criteria. RESULTS The median (interquartile range) of total vegetable consumption was 217 (146- 344) g/d. After adjustment for demographic characteristics and dietary intake, higher total-(≥ 350 g/d) and higher allium vegetable consumption (≥ 30 g/d) in the fourth quartile were significantly and inversely associated with risk of MetS compared to the first quartile. Consumption of green leafy vegetables in the third (21.4-38.3 g/d) versus the first quartile (≤ 13.5 g/d) demonstrated a significant inverse association with lower risk of MetS in children and adolescents;associations for other types of vegetables consumed were not significant. CONCLUSION Consumption of vegetables, especially allium and green leafy vegetables, in sufficient amounts may be beneficial in reducing the risk of MetS among children and adolescents.

关键词： Metabolic syndrome Children and adolescents Vegetable Allium Green leafy vegetables

Epidemiology of livestock-related injuries in a major trauma center in Kashan, Iran

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Chinese Journal of Traumatology 2013年第1期16卷 36-39页

作者： Mahdi Mohammadzadeh Mehrdad hosseinpour Gholam Reza Khosravi Azadeh Sadat Mirzadeh Hoda Jazayeri Trauma Research Center Kashan University of Medical Sciences Kashan IR Iran

ObjectiveLivestock 相关的损害是在进入医院的病人引起病态和死亡的重要因素之一。这些病人的治疗仍然是在护理系统的一个主要问题。当前的学习的目的是从 2006 在伊朗在一个主要损伤中心估计家畜相关的损害的传染病学到 2011MethodsIn... 详细信息

ObjectiveLivestock 相关的损害是在进入医院的病人引起病态和死亡的重要因素之一。这些病人的治疗仍然是在护理系统的一个主要问题。当前的学习的目的是从 2006 在伊朗在一个主要损伤中心估计家畜相关的损害的传染病学到 2011MethodsIn 未来的研究，连续地进入损伤的有 live-stock-related 损害的病人在 Kashan 集中，在 2006 和 2011 之间的伊朗被评估。数据收集了事故，损坏机关，教育水平，运输和结果的包括的 patient’s 人口分布，地方和自然。数据被表示为 mean ； ± ； 129 个病人全部的标准 *** 在这研究被包括，为 0.3% 所有损伤承认(40 273 个盒子) 的财务。吝啬的年龄是(55.27 ； ± ； 14.45 ) 年。男人多于女人被影响四次。从家畜掉下来是在所有组的损伤的主要机制。上面、更低的极限最经常被伤害(n ； = ； 72 ) ，用头，颈和脊骨列在后面(n ； = ； 33 为各个) 。有一死亡，从家畜相关的损害导致这 *** 低发生，家畜相关的损害能损坏人的身体和因此适当的训练节目的主要机关在家增加安全了解并且室外是很重要的。

关键词：流行病学牲畜创伤伊朗工伤卫生保健人口统计数据表示