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Introduction

Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N

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Shanxi Provincial Education Department

Taiyuan University of Technology

location： home> 2017,48(01)

Theoretical Study of the Influence of Achiral Unidentate Ligands on Electronic Circular Dichroism of trans-(bis-Diamine) Cobalt(Ⅲ) Complexes

To assess the influence of achiral unidentate ligands on electronic circular dichroism spectra, the excitation energies, oscillator and rotational strengths for a series of trans-bis-ethyl-enediamine and propylenediamine cobalt(Ⅲ) complexes containing the unidentate ligands X (X= Cl- ,CN- ,NH3,NO-2 ,N-3 ,etc) have been calculated at the TDDFT level using the B3LYP functional and 6-311++G(2d,p) basis set. It was found that, for the chelates with nonaxially symmetry unidentate ligands(X=N-3 ,SCN- ...

Taiyuan University of technology 2017,48(01): JIAJie, FENGLixia. ;

PDFviewed：abstract

Study on Synthesis and Catalytic Performance of HZSM-5/SAPO-11 Composite Zeolite

A series of HZSM-5/SAPO-11 composite zeolites were synthesized. The effects of raw material ratio, template, crystallization time on the formation and catalytic performance of HZSM-5/SAPO-11 composite zeolites were studied. The optimal synthesis conditions were： the raw material mass ratio di-n-propylamine m（DPA）： m（HZSM-5）： m（Al2O3）=8 ： 4 ： 1, di-npropylamine （DPA） as template, and the crystallization time 24 h. The experiment results indicate that the conversion of ethanol and th...

Taiyuan University of technology 2017,48(01): SHENG Qingtao, NIU Yanxia,SHEN Jun, ZHAO Liangfu. ;

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Hydrodynamics Simulation and Feed System Pressure Analysis of Bubbling Fluidized Bed in TBCFB

The numerical simulation study was conducted by using Eularian-Eularian two-fluid model on a continuous feeding/unloading bubbling fluidized bed (BFB), which belongs to the TBCFB,and the pressure balance model of feed system was built on the BFB. The bubbling fluidized bed gas-solid hydrodynamics properties were discussed by changing feed pipe length, feed pipe diameter and solid mass flux. The results show that preferable gas-solid contact effect appears when the feed pipe length is larger than ...

Taiyuan University of technology 2017,48(01): YANG Jingxuan, MA Tengbo, LIAN Wenhao, ZHAO Zhong kai, HAN Nianchen,LI Peng, HAO Xiaogang, HUANG Wei. ;

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Effect of Cu Content on the Catalytic Properties of CuZnAl for Gas-Phase Dehydrogenation of Cyclohexanol

A series of CuZnA1 mixed oxides were obtained by calcination of CuZnAl hydrotalcite precursors, which were prepared through constant pH coprecipitation method. The gas-phase dehydrogenation of cyclohexanol to cyclohexanone over CuZnAl catalysts was carried out in a continuous fixed bed reactor. Results show that catalyst with regular layer structure and high crystallinity was achieved in the range of n(Cu):n(Zn)<2. Catalyst with high specific surface area, good Cu dispersion and suitable basic...

Taiyuan University of technology 2017,48(01): LIN Dandan, NING Yanchun, WU Xu, GUOJ uanjuan, AN Xia, XIE Xianmei. ;

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The Preparation of Acid-Modified Montmorillonite Supported Heteropoly Acid and Its Catalytic Properties for Ethanol Dehydration to Ethylene

In this paper, a series of catalysts were prepared by impregnation loading of different amounts of phosphomolybdic acid and phosphotungstic acid on the montmorillonite modified by 25 % sulfuric acid as carrier. With XRD, nitrogen adsorption-desorption, and FT-IR characterizations, the structure of the catalysts was systematically analyzed, and the catalytic properties of the catalysts were studied in ethanol dehydration reaction to ethylene. The results show that. when WHSV was 2.5h-1 , the conce...

Taiyuan University of technology 2017,48(01): LI Baoru, LI Zheng, AN Xia, WU Xu, XIE Xianmei. ;

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Model-Based Ferro-Coke Strength Prediction and Analysis of Its Control Measures

In order to predict, improve and control ferro-coke strength, and also to make clear the effect of various factors on ferro-coke strength, systematic study on the effect of various factors on ferro-coke strength was carried out by means of 72 runs of test for 6 blending schemes, factors including iron ore powder ratio w, bulk density d of coal charge, volatile content w(Vdof) and caking index G of coal charge etc. On the basis of the study, prediction models of ferro-coke strength were proposed w...

Taiyuan University of technology 2017,48(01): SHI Shizhuang, ZHENG Qi, BI Xuegong, MAO Yangao, WANG Gonger,LUO Yonghui. ;

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Microstructure and Fully Coupled Multi-physics Simulation Model of TTS443 Ferritic Stainless Steel by Resistance Spot Welding

This paper develops a finite element model fully coupling the thermal, electrical and mechanical fields, which can obtain solution simultaneously to study the effect of welding heat input on microstructure and micro-properties of TTS443 ferritic stainless steel. Nugget size deviation was within 10% compared with experimental measurements. The grain growth in the heat affect zone(HAZ) was analyzed in details, on the basis of the welding temperature field of accurate calculation....

Taiyuan University of technology 2017,48(01): YANG Xiao,WANG Wenxian,YAN Zhifeng,WANG Zhibin,ZHANG Xinbao. ;

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Effect of Soft Blowing Process on Inclusions During LF Refining Process of ML08Al Steel

To purify the molten steel, the effect of flow rate of soft blowing on inclusions removal during LF refining and the effect of Ca-treatment on inclusions were studied. Samples were taken from LF refining processes and continuous casting mold of the 90tBOF-90tLF-150 X 150 mm2CC manufacturing process in Shanxi Antai Group Company. Thereafter, the samples were analyzed by optical microscope (OM) and scanning electron microscope (SEM) with energy dispersive spectrometer (EDS). The result shows that t...

Taiyuan University of technology 2017,48(01): CUI Zilong, CHEN Chao, LI Hao, REN Xiang, LIU Zhilong, WANG Shebin. ;

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Experimental Study on Electrochemical Impedance Characteristics of Sand

The method of electrochemical impedance spectroscopy (EIS) can be applied to study structural characteristics of sand which consists of sand particle and pore solution. The EIS diagrams of Bode and Nyquist, equivalent circuit of the whole sand system with different particle size and water content are studied and analyzed by using CS350 electrochemical workstation. The results show that the EIS of sand presents pre-Randles model and its equivalent circuit components include pore solution resistanc...

Taiyuan University of technology 2017,48(01): ZHANG Yafen, HAN Pengju, HE Bin. ;

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Optimization Design of Isolation Pile Parameters in Shield Tunneling for the Control of Deformation of High-Rise Buildings

The shield tunnel construction disturbance effects of Taiyuan Metro Line 2 Shuangtaxi Street-Dananmen interval were studied by FLAC3D numerical simulation method. With pile length, pile diameter and pile spacing as factors, subsidence and tilt rate as indexes, orthogonal test method was used to study the effect of isolation pile on tunnel which closely passes high-rise building, and the parameters of the isolation pile were optimized. The results show that the reasonable selection of parameters i...

Taiyuan University of technology 2017,48(01): ZHAO Jingyang; YANG Shuangsuo; XU Jing; WANG Jing; LUO Haiyan;. ;

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A New Method of Structural Displacement Calculations

In this paper, the author establishes two new methods to calculate bending bar displacement and axial force bar displacement: the Curvature Method and the Geometry Method. The Curvature Method is created according to the curvature-deflection relation, while the Geometry Method is induced from binary. somite point displacement diagram analysis. The paper has also demonstrated how to apply the two methods with some real examples. Combined use of the two methods serves as an independent approach to ...

Taiyuan University of technology 2017,48(01): GUO Renjun. ;

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Wear Resistance Analysis and Optimization Design of Pit-Shaped Non-smooth Surface

The surface-surface friction pair parts in engineering application were simulated by two rectangular blocks. The small block was built with square pit, the big block was built with smooth surface. The parameterized analysis model of the blocks was built by ANSYS and APDL language. With the method of single factor experiment, the effect of pit side length, pit depth and pit spacing on the wear resistance was researched in the finite element simulation. The results indicate that pit surface can eve...

Taiyuan University of technology 2017,48(01): LIU Yu, WANG Xuewen, LI Bo, WANG Shaowei, WANG Shuping, YANG Zhaojian. ;

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Research on Real Time Simulation of Composite Braking for High Speed Electric Drive Tracked Vehicle

According to the braking requirement of high speed electric drive tracked vehicle, the method of mechanical-electric-hydraulic composite braking was put forward. Through the analysis on the breaking characteristics of mechanical brake, and motor and electric hydraulic retarder, the method of motor braking force fuzzy control distribution and the feedforward-feedback two degree of freedom dynamic coordinated control algorithm were formalated. In the composite braking system, the braking intention ...

Taiyuan University of technology 2017,48(01): SHENG Hui, GAI Jiangtao, DU Minggang, ZHOU Guangming. ;

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Study of Data Classification Method Based on fMRI Brain-Computer Interface

To solve the data classification of the functional magnetic resonance imaging(fMRI) signals in the brain-compute interface, the classification method of support vector machine(SVM) using posterior parietal cortex(PPC) as feature selection was presented. First, the data were acquired by the nuclear magnetic device. Next,the data were preprocessed, the voxels of PPC were selected as features, then the peak values and cumulative values of BOLD(blood oxygen level dependent) were selected as the featu...

Taiyuan University of technology 2017,48(01): ZHANG Wei, CHEN Junjie. ;

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A Permutation Fuzzy Entropy for Epilepsy EEG Analysis

This paper put forward a permutation fuzzy entropy algorithm (PFEN), which used the idea of the permutational symbolization in time series to enhance the antinoise ability of FuzzyEn. Through the antinoise experiment and epilepsy detection experiment on public epileptic EEG data, we analysed the antinoise ability and epilepsy detection performance of PFEN. Experimental results show that the PFEN has better ability to resist noise and better epilepsy detection performance. It＇s more suitable for ...

Taiyuan University of technology 2017,48(01): WANG Huiyun, DOUD aqing,CAO Rui, WANG Bin, LIU Guiqing, XIANG Jie. ;

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Influence of Visual Feedbacks on Pen Tilt Input in Target Selection Tasks

The influence of different visual feedback on pen tilt input performance was investigated. Full-track graphical visual feedback (FVF), partial-track graphicl visual feedback, digital visual feedback, and no-track visual feedback were designed. Comparative experiments were con- ducted to explore the selection time and the error rate in target slection tasks that users tilt the pen to select 5, 10 and 20 fan-shaped targets. Results show that visual feedback promoted the performance of speed and scc...

Taiyuan University of technology 2017,48(01): LI Yan, XIN Yizhong, WANGJinru. ;

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An Indoor Positioning Algorithm Based on Trajectory Fingerprint Optimization

For the reducing of fingerprint data quality, this paper proposes a novel trajectory fingerprint-based data structure to replace the original single fingerprint. While compatible with existing fingerprint positioning framework, this paper carried out the trajectory modeling to traditional off-line fingerprint database, and the trajectory mapping of real-time online collected fingerprint. The experimental results further show that the positioning algorithm based on trajectory fingerprint can impro...

Taiyuan University of technology 2017,48(01): CHEN Chen; YANG Yanli;. ;

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An Improved Differential Evolution-Based Particle Filter for Multipath Estimation

Multipath is the dominant error source for high-accuracy positioning systems since it is uncorrelated and uncertain at different location and can not be eliminated by the differential technology. To this end, it is significant for eliminating the multipath error and improving the positioning accuracy to estimate multipath parameters. In this paper, the multipath estimation problem is transformed into a parameter estimation problem, and the particle filter (PF) algorithm is applied for multipath e...

Taiyuan University of technology 2017,48(01): XING Yanjun, CHENG Lan, REN Mifeng, WANG Zhiyuan, XIE Gang. ;

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Collaborative Caching Strategy Based on Minimizing Transmission Cost in Content-Centric Networking

The current caching strategies mainly concern about the performance CCN from the user perspective, without considering the problem of transmission cost when the network provides service for users. To overcome this problem, a caching strategy is proposed for minimization of the transmission cost of CCN. First, a method is presented to calculate the cache value of content, and use the cache value to measure the effect of cache on the network transmission cost. Then, the cache decision and cache rep...

Taiyuan University of technology 2017,48(01): HUO Yaohua; LIU Yinlong. ;

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RFID Antenna Design for Milk Quality Detection

To solve problems of expensive testing equipment, long-cycle analysis and being difficult to apply in daily life when detecting milk quality, and to theoretically study the milk quality testing methods based on radio frequency identification (RFID) technology, RFID tag antenna was designed to sense the quality of milk, and the impact was analyzed of different dielectric parameters of milk on the RFID resonant frequency. The designed antenna coil shows near-field gain maximum 74. 877 0 dB, and rad...

Taiyuan University of technology 2017,48(01): REN Dawei, LYU Yuxiang, SHAO Junhuan, LI Mengchun. ;

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