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Multidisciplinary design optimization of a dual-spin guided vehicle

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挤压速度对搅拌摩擦反挤压法制备Cu-5%Ti_(2)SnC复合丝材性能的影响

Defence technology 2024年第7期 133页

作者： Jalal Karimi mohammad reza rajabi Seyed Hossein Sadati Seyed Mahid Hosseini

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Transactions of Nonferrous Metals Society of China 2024年第3期34卷 935-951页

作者： Amirhossein JAHANI Hamed JAMSHIDI AVAL mohammad rajabi Roohollah JAMAATI Department of Materials Engineering Babol Noshirvani University of TechnologyShariati AvenueBabol 47148-71167Iran

对粉末冶金法制备的含5%(体积分数)Ti_(2)Sn CMAX相的初始复合材料进行搅拌摩擦反挤压(FSBE)处理,研究FSBE工艺的轴向横移速度对Cu-Ti_(2)Sn C复合线材显微组织、力学性能、电学性能和磨损性能的影响。结果表明,随着挤压速度的增加,显... 详细信息

对粉末冶金法制备的含5%(体积分数)Ti_(2)Sn CMAX相的初始复合材料进行搅拌摩擦反挤压(FSBE)处理,研究FSBE工艺的轴向横移速度对Cu-Ti_(2)Sn C复合线材显微组织、力学性能、电学性能和磨损性能的影响。结果表明,随着挤压速度的增加,显微组织中孪晶增多,Ti_(2)SnC颗粒细化,MAX相和Cu基体之间的界面结合改善。当转速为600r/min,轴向横移速度为25mm/min时,Cu-Ti_(2)SnC复合线材具有最大的硬度、屈服强度和极限抗拉强度,分别为HV 132.7、278.34MPa和485.15MPa,这是其更强的界面结合和更细的MAX相导致的。此外,当转速为600 r/min,轴向横移速度为25 mm/min时,Cu-Ti_(2)SnC复合丝的电导率最高,达到89.21%(IACS),磨损率最低,为0.0015 mg/m,这是其更大的晶粒尺寸、更强的界面结合与更低的密度导致的。

关键词：搅拌摩擦反挤压 Ti_(2)SnC MAX相铜基复合材料电导率

A review on the cooling of energy conversion and storage systems using thermoelectric modules

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Journal of Central South University 2024年第6期31卷 1998-2026页

作者： Amirreza IJADI Mehran rajabi ZARGARABADI Saman RASHIDI Amir mohammad JADIDI Department of Energy Faculty of New Sciences and TechnologiesSemnan UniversitySemnanIran Faculty of Mechanical Engineering Semnan UniversityP.O.B.***SemnanIran

Exploitation of sustainable energy sources requires the use of unique conversion and storage systems,such as solar panels,batteries,fuel cells,and electronic *** load management of these energy conversion and storage systems is one of their challenges and *** this article,the thermal management of these systems using thermoelectric modules is *** results show that by choosing the right option to remove heat from the hot side of the thermoelectric modules,it will be a suitable local cooling,and the thermoelectric modules increase the power and lifespan of the system by reducing the spot *** modules were effective in reducing panel *** increase the time to reach a temperature above 50℃ in batteries by 3 to 4 ***,in their integration with fuel cells,they increase the power density of the fuel cell.

关键词： cooling photovoltaic lithium-ion batteries fuel cell electronic equipment thermoelectric modules

A review of major non-sulfide zinc deposits in Iran

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Geoscience Frontiers 2018年第1期9卷 249-272页

作者： Sajjad Maghfouri mohammad reza Hosseinzadeh Abdorrahman rajabi Flavien Choulet Department of Earth Sciences Faculty of Natural SciencesUniversity of Tabriz Department of Earth Sciences University of Birjand Chrono-Environnement Université de Franche-Comté/CNRS

The numerous non-sulfide zinc ore deposits were the historical basis for the development of zinc mining in *** include the Mehdiabad,Irankouh and Angouran world-class deposits,as well as the Zarigan and Haft-har *** deposits were formed by supergene oxidation of primary sulfide minerals during the complex interplay of tectonic uplift,karst development,changes in the level of the water table,and ***(Pb)carbonates,Zn-hydrosilicates and associated hydrated phases directly replace the primary ore bodies or fill cavities along fractures related to uplift *** replacement of primary sulfides is accompanied by distal precipitation of zinc non-sulfide minerals in cavities or internal sediments *** mineralogy of the non-sulfide mineralization in all six deposits is generally complex and consists of smithsonite,hydrozincite,and hemimorphite as the main economic minerals,accompanied by iron and manganese oxy-hydroxides and residual ***,non-sulfide minerals in these deposits consist of two types of ore:red zinc ore(RZO),rich in Zn,Fe,Pb-(As)and white zinc ore(WZO),typically with very high zinc grades but low concentrations of iron and *** minerals of the RZO are Fe-oxyhydroxides,goethite,hematite,hemimorphite,smithsonite and/or hydrozincite and *** minerals of the WZO are smithsonite or hydrozincite and only minor amounts of Fe-oxyhydroxides and hemimorphite.

关键词： Zinc-lead deposits Supergene Non-sulfide Zn minerals Hemimorphite Smithsonite Hydrozincite

A new non-microscopic study of cluster structures in light alpha-conjugate nuclei

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Chinese Physics C 2017年第1期41卷 110-114页

作者： Niloufar Zoghi-Foumani mohammad reza Shojaei Ali Akbar rajabi Department of Physics Shahrood University of Technology P. O. Box: ***-316 Shahrood Iran

In this paper, the alpha-cluster state in light alpha-conjugate nuclei is studied and a new suitable local potential model for the α-cluster phase of these nuclei is suggested. Using the generalized Nikiforov-Uvarov（NU）method, the clusterization energy for ^8Be,^12C,^16O and ^20Ne nuclei is calculated. Based on the obtained results, the clustering phenomenon is more probable at energies among excited levels and it happens neither at ground state nor at excited states of light alpha-conjugate nuclei. It is found that the presented formulation for clustering phenomenon reproduces the results of previous experimental and theoretical attempts for the mentioned nuclei. The consistency of the obtained results with the previous experimental and theoretical predictions indicates the reliability of this formulation for various types of alpha-conjugate nuclei.

关键词： light alpha-conjugate nuclei alpha-cluster state cluster-cluster interaction Nikiforov-Uvarov(NU) method

Characterization of porous Ti-bioglass composite produced by mechanical milling and space holder sintering

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Rare Metals 2015年第9期34卷 638-644页

作者： Saeed Riahi mohammad rajabi Sayed Mahmood Rabiee Department of Mechanical Engineering Babol Noshirvani University of Technology

In this study, porous titanium-10 wt% bioglass(BG) composites were fabricated by the process of combining mechanical alloying with space holder sintering. The pore morphology and phase constituents of the milled powders and porous compacts were characterized by scanning electron microscopy(SEM), X-ray diffractometry(XRD), and Fourier transform infrared spectroscopy(FT-IR). The mechanical properties were determined by running compression test. The porosity of the sintered samples shows a downward trend with the increase of milling time. As the porosity increases, both the compressive strength and elastic modulus decrease. The results illustrate that the fabricated porous compacts with high porosity and suitable mechanical properties have the potential application in bone tissue engineering.

关键词： Titanium Bioglass Porous material Mechanical milli

Extractive Spectrophotometric Determination of Fluconazole by Ion-pair Complex Formation with Bromocresol Green

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Chinese Journal of Chemistry 2007年第9期25卷 1300-1303页

作者： JALALI, Fahimeh rajabi, mohammad J. Department of Chemistry Faculty of Science Razi University Kermanshah Iran

An extraction-spectrophotometric method for the determination of trace amounts of fluconazole was described. Fluconazole was effectively extracted as a 1 ： 1 ion-pair complex with bromocresole green （BCG） at pH 3.0 into chloroform, followed by spectrophotometric determination at 420 nm. Beer＇s law was obeyed over the range of 4-50 μ***^-1 of fluconazole with a detection limit of 3.7 μ***^-1 . The method is simple, rapid and sensitive. The procedure was applied to the determination of fluconazole in pharmaceutical preparations as well as its recovery from a blood serum sample.

关键词： fluconazole solvent extraction spectrophotometry capsule blood serum

Homogeneous and nanomolar detection of hydrazine by indigocarmine as a mediator at the surface of TiO_2 nanoparticles modified carbon paste electrode

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Chinese Chemical Letters 2012年第2期23卷 213-216页

作者： mohammad Mazloum-Ardakani Hossein rajabi Hadi Beitollahi Department of Chemistry Faculty of ScienceYazd UniversityYazd 89195-741Iran Department of Chemistry Faculty of ScienceYazd UniversityYazd 89195-741Iran Environment Department Research Institute of Environmental SciencesInternational Center for ScienceHigh Technology & Environmental SciencesKermanIran

The homogeneous electrocatalytic oxidation of hydrazine（HZ） has been studied by indigocarmine（IND） as a mediator at the surface of TiO_2 nanoparticles modified carbon paste electrode（TNMCPE）.Cyclic voltammetry was used to study the electrochemical behavior of IND at different scan *** voltammetric response of the modified electrode was linear against the concentration of HZ in the ranges of 3.0×l0^（-8）-7.0×10~6 mol/L with differential pulse voltammetry *** detection limit（3σ） was determined as 27.3 nmol/*** evaluate the applicability of the proposed method to real samples,the modified CPE was applied to the determination of HZ in water samples.

关键词： Hydrazine Indigocarmine TiO_2 nanoparticles Modified electrode Carbon paste electrode Nanomolar detection

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