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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(02)

Synthesis of NaY Membrane by Epitaxial Growth Using EMT as Seeds and the Study of Its Pervaporation Performance

Using EMT zeolite grains as seeds, NaY membranes were synthesized by secondary hydrothermal reaction method. The effect of alkalinity and the amount of Al in the secondary growth sol on the microstructure of the membranes was investigated. The effect of the concentration of the feed mixture and the pervaporation temperature on the separation performance was investigate when the membranes were applied to separate MeOH/DMC mixture. The stability of the membrane was also investigated. The results sh...

Taiyuan University of technology 2017,48(02): WEI Qiaolin; JIANG Haibing; WANG Xiaodong; HUANG Wei. ;

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Preparation of Fe3O4@SiO2@CS/PAA and Its Application in Absorbing Cr(Ⅵ)from Wastewater

According to the fact that Cr(Ⅵ)-containing wastewater has widespread sources,great toxicity,ease to accumulate but difficulty to remove,on the basis of the excellent adsorption performance of chitosan(CS),a novel＂sandwich＂structure adsorbent Fe3O4@SiO2@CS/PAA, of which Fe3O4 is the core, SiO2 is the sandwich layer, and CS/PAA is the shell, was synthesized. The as-prepared adsorbents were rich in amino, carboxyl, and hydroxyl groups. The absorbents for treatment of Cr(Ⅵ)(100mg/L) simulation w...

Taiyuan University of technology 2017,48(02): QIAO Chen; MA Jianchao; LI Yanwei; ZHANG Qingfang; XIAO Yuqiang; MA Qingliang. ;

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Effect of n(Cu)/n(Zn)Ratio on the Structure of Cu/ZnO Precursor and Catalyst

The CuO/ZnO precursors and catalysts with different Cu/Zn atomic ratios（nCu/nZn）were obtained by traditional co-precipitation method. The microscopic properties of precursors and catalysts were further characterized through XRD,FT-IR,AAS and H2-TPR,with emphasis on the effect of the nCu/nZn on phase transition of precursors and dispersion of the catalysts. The results show that different concentration of Cu2＋and Zn2＋in raw material results in the difference between impetus of isomorphous subs...

Taiyuan University of technology 2017,48(02): WANG Liping, ZHENG Huayan, LI Zhong, CHEN Xiong. ;

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Simultaneous Removal of NOx and Soot over Perovskite-Type Complex Oxides Catalysts LaNiO3 and LaCoO3

LaNiO3 and LaCoO3 perovskite catalysts for simultaneous removal of nitrogen oxides and diesel soot were prepared by sol-gel method. The results indicate that LaNiO3 catalysts exhibited excellent catalytic activities for soot and NOx, which could decrease the soot combustion temperature tm by 216 ℃ and enhance the NO conversion efficiency by 104% as compared with those of non-catalysed reaction. It was thus assumed that diesel soot undergoes catalytic combustion reaction over perovskite-type cata...

Taiyuan University of technology 2017,48(02): GAO Yonghua; CUI Jiali; GAO Lizhen. ;

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Analysis of Performance of Heat Transfer Enhanced Circular Tube with Rectangular Wings Longitudinal Vortex Generator

The heat transfer, resistance performance and the value of performance evaluation criterion（PEC）of the circular tube with rectangle wings longitudinal vortex generators at different wing angle（α）were studied by 3Dnumerical simulation. The mechanisms of flow and heat transfer were analyzed. The results show that the Nusselt numbers Nu and the friction factors f of the enhanced circular tube are higher than those of the plain tube in the studied range. As compared with the plain tube, the Nuss...

Taiyuan University of technology 2017,48(02): LEI Cong, LEI Yonggang, SONG Chongfang, WANG Fei. ;

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Contrastive Analysis on Rationality of Fatigue Limit in Directly Buried Extruded Tees of Specification

According to the statistics of 300 questionnaires on the accidents of directly buried heating pipe network,in the operation process lasting for about 30 years,the accident probability of prefabricated directly buried insulating pipe of DN500 and below caused by tees destruction accounted for only 5.55%,far less than other valves and accessories.With numerical simulation made on extruded tees joint with small pipe diameter DN500 and below,the stress intensity and stress distribution law of extrude...

Taiyuan University of technology 2017,48(02): LI Kui, WANG Fei, WANG Guowei, LEI Yonggang. ;

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The Adaptability of Temperature on Coal and Oxygen Adsorption Model

This paper selected Chengzhuang Mine No.9coal as anthracite samples. Effect of temperature on coal oxygen adsorption at 25,30,35,40 ℃ conditions was studied by adsorption constant measuring apparatus. The results show that, under the condition of critical spontaneous combustion temperature(25~40 ℃)and lower pressure(p≤2.5MPa),the adsorption of coal for oxygen has an inhibitory effect with the increase of temperature. The fitting effect of Langmuir model is better in the temperature range of 25...

Taiyuan University of technology 2017,48(02): LI Yuanxing, WU Shiyue, ZHANG Meihong, WEI Jie. ;

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Experimental Study of Electrical Resistivity Character of Red Mud

For a better understanding of the electrical resistivity characteristics of the red mud, the electrical resistivity tests on red mud were made in laboratory. The red mud electrical resistivity and unconfined compressive strength were measured with different water contents, porosities, and ages under different current frequencies. The relationship between electrical resistivity and each variable was studied. Results show that, the red mud electrical resistivity decreases with the increase of curre...

Taiyuan University of technology 2017,48(02): SONG Zhiwei, HUANG Fengfeng ,LI Qixuan, ZHU Ningbo, ZHANG Yujian, DONG Xiaoqiang. ;

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Three-Dimension Magnetic Field Array Measurement System for Key Smelting Parameters in Submerged Arc Furnaces

Aiming at the existing problems of the detection methods of key smelting parameters of submerged arc furnaces(SAF)in the past,a new non-contact magnetic field array detection method is proposed.According to the circuit structure of SAF and relative theory of electromagnetic field,a SAF magnetic field model is established,and the three-dimension magnetic field array measurement system is designed and developed.By the magnetic field distribution information outside of the SAF,the current distributi...

Taiyuan University of technology 2017,48(02): LIU Weiling, WENG Jiankan, CHANG Xiaoming. ;

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Design of Control Unit of Multi-band Remote Electronic Tilting Antenna Conforming to AISG2.0

According to AISG2.0technical requirement on Multi-Band remote electronic tilting antenna（MRET）on state detection, modifying tilt angle and alarm reporting, embedded control unit of MRET conforming to AISG2.0was designed. The hardware system diagram was given first, then the communication interface, inrush current suppression circuit and tilt angle driver were discussed. In software module, the idea of protocol stack and tilt angle detection and control function was proposed, and the design of ...

Taiyuan University of technology 2017,48(02): ＬＹＵＹｉ，ＤＥＮＧＣｈｕｎｊｉａｎ，ＺＯＵＫｕｎ. ;

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Realization and Simulation of Decoding Space Division Multiplexing Algorithm by Using Antenna

In order to decode dual-antenna space division multiplexing data of Long Term Evolution（LTE）transmission mode 3（TM3）by a single-antenna LTE user equipment, a reference constellation which can be used for calculating the log-likelihood ratio（LLR）was generated from single-antenna data on the basis of the calculation principle of LLR. The formula for computing the LLR of turbo decoder＇s input, using single-antenna data, was deduced. The dual-antenna TM3 LTE space division multiplexing data de...

Taiyuan University of technology 2017,48(02): LIU Jianxia, HUI Haisheng. ;

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Semantic Search and Ranking Methods Based on Web Resource Ontology

In order to understand the concept of web resources correctly and analyze web information query precisely, this paper proposes a semantic searching method based on extended spreading activation algorithm to improve the efficiency of Web search. It calculates the self-information content by resources and their relationships in web resource ontology, the traditional semantic searching and ranking method is extended on the basis of the self-information content, then a new web searching and ranking m...

Taiyuan University of technology 2017,48(02): LI Gang, DUAN Fu, ZHANG Yang. ;

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3D Visualization and Distance Solution of Knee Joint Space

Knee joint space is the main index to evaluate some knee joint diseases, and can provide an important reference for the diagnosis and treatment of these diseases. By numerical solution methods and 3D visualization technologies, this paper provides a tool to visualize the knee joint space in 3D and automatically calculate the knee joint space. Based on the precise3D knee joint bone model, this tool can not only show the whole knee joint space, but also display each layer knee joint space, which is...

Taiyuan University of technology 2017,48(02): JIANG Zhaona, LIN Zebin,YANG Wenzhen, WANG Xinhong, LOU Suliang, LIU Li,PAN Zhigeng. ;

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Research of Multiscale Reconstruction Method of Time Series Based on Variance

Focused on the inability of traditional multiscale time series reconstruction method to extract EEG signal characteristics completely, a new multiscale reconstruction method of time series, moving variances was proposed. EEG signals are reconstituted by new method of moving variances, then two eigenvalues, sample entropy and variance entropy, are extracted at multiple scales. Finally, the extracted features are tested of p-value by method of KS test. Experiments show extracting EEG signal feature...

Taiyuan University of technology 2017,48(02): JIE Dan, LI Yuchi, YIN Guimei, LI Haifang. ;

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The Interference Characteristics of HF Radar Caused by Wind Turbine in Shortwave Frequency

A wind turbine placed in the vicinity of the radar system would have a serious impact on positioning and tracking of the radar performance. In this paper the interference level was evaluated on the basis of the HF radar work principle and used radar cross section（RCS）.With actual HF radar work band（3~30 MHz）as example Hallen method was used to establish wire model of RCS calculating and the MoM was used to calculate the wind turbine far-field scattered field. Then the wind turbine model was e...

Taiyuan University of technology 2017,48(02): TANG Bo, SUN Rui, LIU Ren, WU Zhuo, JIANG Haotian. ;

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Design and Analysis of a Type of Linear Permanent Magnet Switch Reluctance Motor

Traditional linear switched reluctance motor always carries on undesirable characteristics from rotating switched reluctance motor,which include large thrust pulsation and prominent noise problem.When the operation of a linear motor is studied,the air gap magnetic field and the electromagnetic force should be calculated precisely.Because of the effect of the linear structure,the edge effect and the cogging effect,the equivalent magnetic circuit method can not satisfy the requirements.To optimize ...

Taiyuan University of technology 2017,48(02): SUN Haitao, CHEN Yan, CHANG Xiaomin, DOU Yinke. ;

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Investigation on Inertia Effect in the Dynamic Splitting Test of Concrete

A rate-insensitive material model was used in commercial FE software to simulate the dynamic splitting tests. The influence of thickness and the loading angle of flattened Brazilian disc specimen on the tensile strength was investigated. The numerical simulation results indicate that the inertia effect has a significant influence on the dynamic tensile strength. The inertia effect is dependent on specimen size, loading angle and strain rate....

Taiyuan University of technology 2017,48(02): XIANG Da, WANG Zhihua, WANG Genwei. ;

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Study on Energy Absorption Properties of Aluminum Foam-Filled Thin-Walled Metal Tubes Under Lateral Impact Loading

A study of numerical simulation for aluminum foam-filled thin-walled metal tubes under lateral impact loading is performed utilizing the finite element software Ls-dyna. By comparison with the results of numerical simulation and experiment, the validity of the finite element model and the accuracy of the calculation results are verified. Then, the influence on tube deformation and energy absorption properties is investigated, from such factors as geometric parameters of tube, density of aluminum ...

Taiyuan University of technology 2017,48(02): HUANG Zhichao, LIU Zhifang, LU Guoyun. ;

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Mechanical Properties of Porcine Extraocular Muscles in Vitro

Uniaxial tensile tests were used to determine the mechanical properties of porcine extraocular muscles in vitro. The experimental data were converted into the relationships of stress verse strain. Mooney-Rivilin and Ogden hyperelastic models were used to analyze the corresponding passive behaviors. The hyperelastic parameters identified were used as the input of numerical modeling to establish the finite element models with the corresponding hyperelastic constitutive models, respectively. Compare...

Taiyuan University of technology 2017,48(02): ZHANG Xiaoxiang, ZHAO Yuting, GAO Zhipeng, WANG Xiaojun. ;

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Strong-Commutativity Preserving Maps on 2×2 Matrices

Let M2(F) be the algebra of 22matrices over the real or complex field F. For a given positive integer k≥1, the k-commutator of A and B is recursively defined as [A,B]k = [[A,B]k-1,B] with [A,B]0=A and [A,B]1=[A,B]=AB-BA. The main result in this paper is shown that a map Φ(A)∶M2(F)→M2(F)with range containing all rank one matrices satisfies that [Φ(A),Φ(B)]k=[A,B]k for all A,B∈M2(F) if and only if there exist a functional h:M2(F)→Fand a scalar λ∈F with λk+1=1 such that Φ(A)=λA+h(A)I fo...

Taiyuan University of technology 2017,48(02): LIU Meiyun, HOU Jinchuan. ;

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