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A Simpler Memristor Emulator Based on Varactor Diode

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Chinese Physics Letters 2018年第5期35卷 144-147页

作者： Dong-Sheng Yu ting-ting Sun Ci-Yan Zheng H.H.C.Iu t.Fernando School of Electrieal and Power Engineering China University of Mining and TechnologyXuzhou 221116 School of Electrical Electronic and Computer EngineeringThe University of Western AustraliaPerth WA 6009Australia

A new memristor（MR） emulator is designed by making use of only three current-feedback operational amplifiers,one varactor diode, one capacitor and five resistors. As compared with other reported MR emulators, only three active devices and ten components in total are required for realizing this MR emulator, and hence this emulator can be regarded as a simpler one for the moment. the results obtained by Multisim simulation and experimental prototypes are given to verify the practicality and feasibility of this MR emulator.

关键词： MR As

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用具有焦炭填充床的熔融还原工艺生产铁合金

铁合金 1993年第3期24卷 47-52,20页

作者： H.ItAYA S.tAGUCHI k.IGAWA t.NOZAkI 索淑芬日本千叶kawasaki钢公司钢铁研究室

一个具有焦炭填充床的新熔融还原工艺,已发展成为用低品位焦炭和粉矿生产铁合金或生铁。这个工艺的特征是:(1)一个焦炭填充床竖炉;(2)两段式风口;(3)直接使用不烧结粉矿;(4)通过上部风口输送和喷射重力粉料;(5)流态化预还原炉对副产品... 详细信息

一个具有焦炭填充床的新熔融还原工艺,已发展成为用低品位焦炭和粉矿生产铁合金或生铁。这个工艺的特征是:(1)一个焦炭填充床竖炉;(2)两段式风口;(3)直接使用不烧结粉矿;(4)通过上部风口输送和喷射重力粉料;(5)流态化预还原炉对副产品废气充分利用。熔融还原的小型试验。

关键词：铁合金焦炭填充床熔融还原

Characteristics of 100Cr6 bearing steel after thixoforming process performed with prototype device

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中国有色金属学会会刊：英文版 2010年第S3期20卷 1033-1036页

作者： L.ROGAL J.DUtkIEWICZ t.CZEPPE J.BONARSkI B.OLSZOWSkA-SOBIERAJ Institute of Metallurgy and Materials Science of the Polish Academy of Sciences 30-059 Kraków25 Reymonta St.Poland Faculty of Foundry Engineering University of Science and Technology30-059 Kraków23 Reymonta St.Poland

A device based on a high pressure die-casting(HPDC) machine was constructed,with a capacity to produce thixo-casts from *** inductive heating to the required semi-solid temperature range,the samples were transported in a protective argon atmosphere to a cylinder of modified HPDC and injected into a pre-heated *** steel 100Cr6(after forging) was used as the feedstock *** metallographic analysis of the steel showed a homogenous structure within a whole volume characterized by a grain size between 2 μm and 8 μ*** scanning calorimetry(DSC) analysis allowed to estimate the process temperature for thixoforming at 1 390 ?C which was attributed to about 45% of a liquid *** such technological parameters after the semi-solid processing the microstructure consisted of globular grains of size from 15 μm to 40 μ*** microstructure of globules indicated predominant presence of martensite(about 76% volume fraction) with residual austenite between plates.X-ray analysis confirmed that the thixo-cast samples contain mainly martensite and residual *** hardness of the initial forged sample was HRC 27 and after the thixoforming process it was HRC 60,which confirms the presence of martensite and *** thixo-casts were subjected to low tempering,at temperature of 150 °C for a period of 2 h,in order to remove stresses created during the process of thixoforming and to increase *** hardness after tempering was HRC ***,in order to identify phases present in the thixo-casts,transmission electron microscopy(tEM) was carried out.

关键词： SSM semi-solid metal thixoforming 100Cr6 steel

temperature effect on the corrosion and passivation characterization of Ni_(82.3)Cr_7Fe_3Si_(4.5)B_(3.2) alloy in acidic media

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International Journal of Minerals,Metallurgy and Materials 2016年第2期23卷 205-214页

作者： khadijah M.Emran Sanaa t.Arab Aisha M.Al-turkustani Hamad A.Al-turaif Chemistry Department Faculty of Science Taibah University Department of Chemistry Faculty of Sciences Al-Faisaliah King Abdulaziz University Department of Chemical and Materials Engineering King Abdulaziz University

the effects of temperature on corrosion and the electrochemical behavior of Ni82.3Cr7Fe3Si4.5B3.2 glassy alloy in HC1,H2SO4,and H3PO4 acids were studied using AC and DC *** data reveal that the susceptibility to localized corrosion increases with increasing *** polarization curves reveal that the bulk glassy alloy is spontaneously passivated at all the investigated temperature in H2SO4 and H3PO4 solutions.A localized corrosion effect in HCl solution is clearly *** apparent activation energies in the regions of tafel,active,and passive,as well as the enthalpies and entropies of the dissolution process were determined and *** high apparent activation energy（Ea） value for H3PO4 solution in tafel region is explained by the low aggressivity of PO4^3- ions.

关键词： nickel alloys corrosion temperature effect acidic environment passivation polarization

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关于共混胶混炼性能的研究

橡胶参考资料 1989年第3期19卷 10-16页

作者： t.k.Bhaumik A.k.Bhowmik 张朗毕洪斌

1.前言橡胶共混胶因技术上的各种原因而广泛地应用于工业上,但是,不同橡胶具有不同的混炼特性。有些橡胶在低速辊上能很好地包辊,但有些橡胶则出现脱辊现象或者在快辊上包辊。甚至有些橡胶根本就不包辊。虽然开放式混炼机现在多半被各... 详细信息

1.前言橡胶共混胶因技术上的各种原因而广泛地应用于工业上,但是,不同橡胶具有不同的混炼特性。有些橡胶在低速辊上能很好地包辊,但有些橡胶则出现脱辊现象或者在快辊上包辊。甚至有些橡胶根本就不包辊。虽然开放式混炼机现在多半被各种密炼机所取代,但混炼胶的最后压片则要用双辊开炼机。目前,混炼与其说是一种科学,还不如说是一种艺术。

关键词：共混胶混炼性能橡胶

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柴油机共轨式喷油系统

汽车与新动力 1998年第3期 18-28页

作者： Hoffmann k H Hummel k Maderstein t 陈勇华

德国戴姆勒·奔驰汽车公司在世界范围内首次推出采用新型共轨式燃油喷射系统的4气门直喷式柴油机,并用于A、C级轿车上,由此揭开了柴油机燃油喷射技术的新篇章。早在1993年公司对当时现有的喷油系统进行了广泛的比较和系统评定之后决定... 详细信息

德国戴姆勒·奔驰汽车公司在世界范围内首次推出采用新型共轨式燃油喷射系统的4气门直喷式柴油机,并用于A、C级轿车上,由此揭开了柴油机燃油喷射技术的新篇章。早在1993年公司对当时现有的喷油系统进行了广泛的比较和系统评定之后决定批量开发共轨式喷油系统。

关键词：燃油系统柴油机开发

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天津大学学报(自然科学与工程技术版) 2018年第12期 1233-1237页

作者： t t

Electron Structure and Microwave Absorbing Ability of Flaky FeSiAl Powders

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Journal of Materials Science & technology 2011年第2期27卷 170-174页

作者： t.D.Zhou D.F.Liang L.J.Deng D.C.Luan Xihua University Chengdu 610039China State key Laboratory of Electronic thin Films & Integrated Devices University of Electronic Science and Technology of ChinaChengdu 610054China

Soft magnetic metallic materials have been widely used for absorbing electromagnetic *** Fe 86 t Si t Al 14（t=9,11,14 and 16） alloys powders were prepared from melt-quenched ribbons by annealing and *** a previous report we discussed the order-disordered structure of this *** this article,we studied their electron *** electron numbers of（111） and（100） plane increase with increasing Si content but Bohr magneton *** permittivity and complex permeability are both decreased with increasing Si content *** lowest value of reflectivity among the four alloys is originated from Fe 70 Si 14 Al *** peak values of reflectivity are all lower than 10 dB,and the absorbing frequency range（R 10 dB） increases from 1 to 2 GHz when t reaches 16.

关键词： Flaky powders Specific saturation magnetism Bohr magneton Absorbing ability

Numerical simulation of dispersion generated by a 180° turn in a microchannel

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Chinese Physics B 2002年第3期11卷 226-232页

作者：姚朝晖 C.t.Culbertson 等 DepartmentofEngineeringMechanics TsinghuaUniversityBeijing100084China ChemicalandAnalyticalSciencesDivision OakRidgeNationalLaboratoryP.O.Box2008OakRidge.

A numerical scheme is developed to simulate electro-osmotic flow and mass transport in a microchannel which includes a 180° turn. the model has been used to predict the behaviour of electro-osmotically driven flows. the detailed structure of the flow field in a microchannel in combination with species mass diffusion can explain the concentration dispersion introduced by a 180° turn. the results of our simulations agree both qualitatively and quantitatively *** is demonstrated that an improved electro-osmotic force model could simulate the with experimental electrokinetically driven flow well without making detailed calculations of the electric charge density distribution within the electrical double layer. Additionally, because this model applies forces to the liquid as opposed to imposing local velocities, it should also be appropriate for use where pressure gradients exist in the flow field.

关键词： surface chemistry molecular diffusion numerical simulation microchannel