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PRECIPITATION AND GROWTH OF PEROVSKITE PHASE IN TITANIUM BEARING BlAST FURNACE SlAG

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Acta Metallurgica Sinica(English letters) 2007年第1期20卷 9-14页

作者： Z.Z. Guo T.P. lou l. Zhang l.N. Zhang Z.T. Sui School of Materials and Metallurgy Northeastern University Shenyang 110006 Ghina

The effects of transformation of slag composition and additive agents on the morphology, the precipitation behavior, the crystal growth, and the volume fraction (VF) of perovskite (CaO·¤TiO_2) crystal in the Ti-bearing blast furnace slags were investigated. As the morphology of perovskite is dispersed in molten slags, the crystal growth mechanism of the melting of fine dendrites and the coarsening of large grains exist throughout the solidification of molten slags. With the increase of CaO and Fe_2O_3 content, VF of perovskite obviously increases. However, high basicity leads to the viscosity of slag, which results in the reduction of the average equivalent diameter (AED). The experimental results showed that the presence of the additives CaF_2 and MnO efficiently decreased the viscosity of the slags, and obviously improved the morphology of perovskite and promoted its growth.

关键词： perovskite phase Ti-bearing blast furnace slag precipitation additive agent

Continuous-variable quantum key distribution based on faster-than-Nyquist

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Continuous-variable quantum key distribution based on faster...

第十八届全国量子光学学术会议

作者：潘雅茜 l.Zhang y.Guo D.Huang 中南大学 School of Information Science & Engineering Central South University

In previous continuous-variable quantum key distribution（CV-QKD） systems, the transmission rate is limited by Nyquist criterion. Under this limitation, the data symbols transmit without inter symbol interference（ISI）, but the spectra of the system are not efficient. Faster-than-Nyquist（FTN） technology has been view as a potential technique in future communication systems because of its higher spectrum efficiency and faster symbol rate. In this paper, a CV-QKD system based on FTN is proposed. To eliminate ISI caused by FTN and further boost the system performance, we conceive a low-complexity frequency domain equalization（FDE）-aided receiver structure and use an efficient 1 GHz homodyne detector at Bob’s side. Our proposed scheme is especially beneficial for the long-tap and long-distance scenario. Simulation results demonstrate such an CV-QKD system can reduce demodulating complexity, decrease the excess noise caused by pulse overlap and enhance key rate.

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Molecular Design,Self-assembly and Interface Engineering for High-performance Polymer Solar Cells and light-emitting Diodes

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Molecular Design,Self-assembly and Interface Engineering for...

全国第八届有机固体电子过程暨华人有机光电功能材料学术讨论会

作者： Alex K-y.Jen Angus H-l.yip Steve Hau Department of Materials Science and Engineering and Institute of Advanced Materials and Technology University of WashingtonSeattleWA 98195-2120

Organic semiconductor-based active materials have been explored for a wide array of applications such as flat panel displays,solid-state lighting,electronic circuits,and solar *** diversity in the molecular design,synthesis, and processing of these organic solids has empowered scientists to fine-tune their material structures,morphologies, and physical properties for opto-electronic applications.

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铺层方式对VIHPS制备的GO-CF混杂增强复合材料弯曲性能的影响

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复旦学报（自然科学版） 2024年第2期63卷 178-189,I0001页

作者：马玉钦宋晨赵勇李飞吕晋书王刚锋张育洋长安大学工程机械学院道路施工技术与装备教育部重点实验室陕西西安710064 西安电子科技大学机电工程学院陕西西安710071 西安建筑科技大学机电工程学院陕西西安710055

本文首先采用真空浸渗热压工艺(VIHPS)制备了不同铺层方式的氧化石墨烯-碳纤维(GO-CF)混杂增强复合材料,并对该材料进行三点弯曲试验,再通过扫描电子显微镜(SEM)表征其微观断口形貌。然后使用Digmat软件的FE模块建立微-纳跨尺度的代表... 详细信息

本文首先采用真空浸渗热压工艺(VIHPS)制备了不同铺层方式的氧化石墨烯-碳纤维(GO-CF)混杂增强复合材料,并对该材料进行三点弯曲试验,再通过扫描电子显微镜(SEM)表征其微观断口形貌。然后使用Digmat软件的FE模块建立微-纳跨尺度的代表性体积单元(RVE)模型,将该模型导入ANSyS Workbench软件中进行三点弯曲仿真模拟。复合材料三点弯曲试验结果表明,随着沿试样宽度方向(y向)纤维铺层的增加,复合材料的弯曲强度从433.2 MPa降低至12.7 MPa,弯曲模量从13.8 GPa降低至0.2 GPa,它们分别降低了97.07%和98.55%。最后通过对比试验与仿真结果发现,两种结果的变化趋势基本一致,且仿真结果与试验结果接近。复合材料在弯曲变形过程中,受到拉伸和压缩的共同作用,其中导致复合材料失效的方式主要包括基体开裂、界面脱粘和纤维断裂。

关键词：铺层方式真空浸渗热压工艺氧化石墨烯微-纳跨尺度代表性体积单元损伤

ElECTROCHEMICAl STUDy ON THE lOCAlIZED CORROSION OF TWO DIFFERENT TEMPER ly12 AllOyS

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Acta Metallurgica Sinica(English letters) 2005年第5期18卷 609-619页

作者： F.H. Cao l. Guo l.J. Zhang Z. Zhang J. Q. Zhang Department of Chemistry Yuquan Campus Zhejiang University Hangzhou 310027 China State Key laboratory for Corrosion and Protection of Metals Institute of Metal Research The Chinese Academy of Sciences Shenyang 110016 China

The corrosion behavior of two different aged ly12 alloys in EXCO （234g/l NaCl, 50g/l KNO3 0.1M HNO3） and MIl-H-600 （35g/l NaCl, 5g/l （NH4）2SO4） solutions were studied using electrochemical impedance spectroscopy （EIS） in conjunction with SEM technique respectively, and the pH variation of the above accelerated corrosion solution during materials corroding was also measured to characterize the corrosion processes. At the beginning of corrosion, EIS plots exhibited two capacitive arcs in the high frequency range （Cd） and mediate frequency range （ Cf） originating from the original corroded surface and the newly formed interface respectively, and a low frequency inductive loop due to the relaxation phenomenon of reaction intermediates. In the EXCO,solution, the EIS results showed that once the exfoliation corrosion occurred, the inductive loop disappeared. The results also showed that the exfoliation corrosion susceptibility of state T6 is much higher than that of state T3, but the intergranular corrosion susceptibility has a reverse order. Based on the relationship of EIS results with SEM and metalloscopy morphologies of the corroding substrates and physic-chemical meaning of EIS parameters, an index （Cf/Cd） has been proposed to characterize the extent of the localized corrosion, which variation tallies with the real corrosion extent correctly. Meanwhile, good agreement was found between the experimental results and the electrochemical model proposed and, good coherence between the electrochemical features and the distribution type of constituent particles of corroding material was observed.

关键词： electrochemical impedance spectroscope ly12 alloy exfoliation corrosion intergranular corrosion

Some Approaches to Corpus Stylistics

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外国语 2010年第2期33卷 67-81页

作者： David l. Hoover New york University U. S. A

This article explores some ways that corpus stylistics can be valuable to litera.y studies. Corpus study is full of surprises and the examples of serendipitous insights presented here suggest that corpus stylistics can be valuable as a discovery technique a way to uncover unexpected questions and insights. By providing access to evidence that has never been available before it can also strengthen and deepen traditional litera.y and stylistic ana.ysis. Specially created litera.y corpora facilitate the investigation of style variation within a single text or a group of related texts. Creating a corpus of epistola.y novels makes it possible to compare how well different authors succeed in creating different voices for their letter-writers. Treating a single epistola.y novel or a novel with multiple narrators as a corpus makes it is possible to explore the degree to which an author has succeed in creating distinct individual voices within a novel. Huge natural language corpora and web searches can be used in a very different kind of corpus stylistics providing access to novel kinds of tangible and persuasive evidence that can supplement or correct litera.y intuition.

关键词：语言学语言艺术词汇语言研究

A HETEROGENEOUS MUlTIPROCESSING COMPUTER SySTEM WITH SHARED MEMORy

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A HETEROGENEOUS MULTIPROCESSING COMPUTER SYSTEM WITH SHARED ...

计算机，通信，控制与电力工程国际会议

作者： A S Fong K y Wu R M M Chen l M Cheng Department of Electronic Engineering City Polytechnic of Hong Kong 83 Tat Chee Ave KowloonHong Kong

A heterogeneous multiprocessing computer system constructed from microprocessors of different architecture is currently under development at *** this multiprocessing system,a cluster of processors of one architecture are connected through their system bus with a shared memory and a shared higher-level cache,which is named cluster cache.A such cluster of processors are then connected to another similar cluster of processors of a different architecture with an a.ynchronous parallel bus through the cluster caches. This heterogeneous multiprocessing system supports distributed but shareable memory *** processor can access the memory on all processor clusters with programming *** addresses are transmitted on the bus,with leading bits of the address to identify the target *** coherency of the cluster caches are strictly *** the sharing of distributed memories of different systems is allowed. This paper reports the first phase of the project which includes the modeling of the a.ynchronous bus and the cluster cache memory with the VHSIC Hardware Description language(VHDl).

关键词： A HETEROGENEOUS MUlTIPROCESSING COMPUTER SySTEM WITH SHARED MEMORy

Effects of stretching/shrinking on the thermal performance of a fully wetted convective-radiative longitudinal fin of exponential profile

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Applied Mathematics and Mechanics(English Edition) 2022年第3期43卷 389-402页

作者： B.J.GIREESHA M.l.KEERTHI G.SOWMyA Department of PG Studies and Research in Mathematics Kuvempu UniversityShankaraghatta 577451India Department of PG Mathematics The National College(Auto)Bangalore 560070India

The present investigation focuses on the thermal performance of a fully wet stretching/shrinking longitudinal fin of exponential profile coated with a mechanism like a conveyer *** modeled equation is non-dimensionalized and solved by applying the Runge-Kutta-Fehlberg(RKF)*** effects of parameters such as the wet parameter,the fin shape parameter,and the stretching/shrinking parameter on the heat transfer and thermal characteristics of the fin are graphically ana.yzed and *** is inferred that the negative effects of motion and internal heat generation on the fin heat transfer rate can be lessened by setting a shrinking mechanism on the fin *** current examination is inclined towards practical applications and is beneficial to the design of fins.

关键词： fully wet longitudinal fin convection exponential profile internal heat generation moving fin

Neural Network Impedance Control for Robotic Deburring Process Honing

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Neural Network Impedance Control for Robotic Deburring Proce...

The 9th International Symposium on Advances in Abrasive Technology

作者： X.l. Wang, y. Wang and y.N. Xue School of mechanical engineering, Shandong University, Jinan, 250061, China

The conventional constant controllers always result in an uneven chamfer for its characteristics in nature when the burrs va.y highly in automated robotic deburring process. An adaptive impedance controller with a neural network compensator is proposed to deal with the burrs variations and achieve the desired chamfering contour. The controller is based on the impedance control, which is suitable for force tracking for its robustness towards disturbances and its reliability. A neural network compensator is integrated to modify the input command according to the contact force and reference position. The effectiveness of the proposed approach is shown by simulation experiments of the robotic deburring process and is compared with the conventional impedance control.

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