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东华大学学报（英文版）
东华大学
东华大学学报（英文版）

东华大学

严濒景

双月刊

1672-5220

xuebao@dhu.edu.cn

021-62373643

200051

上海市延安西路1882号《东华大学学报》编辑部

东华大学学报（英文版）/Journal Journal of Donghua University(English Edition)EI
查看更多>>本刊以纺织、合成纤维、服装等学科为特色，兼顾相关学科的学术刊物，主要刊载本校师生员工的科技论文，同时也刊载校外、海外的科研论文。
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    Preparation of ZnO Nanomaterials and Their Photocatalytic Degradation of Organic Pollutants

    XU HuanhuanXU Lan
    271-279页
    查看更多>>摘要：Nano zinc oxide ( ZnO) has excellent performance and low cost, but ZnO has a wide band gap and its electron-hole is difficult to achieve effective separation, which greatly limits its photocatalytic activity. This paper introduces the structural properties of ZnO and the mechanism of photocatalytic degradation of organic pollutants, and summarizes the preparation of ZnO nanomaterials and the application studies in improving its photocatalytic properties, in order to promote the research and development of ZnO nanomaterials.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Improved Fibroblast Adhesion and Proliferation by Controlling Multi-level Structure of Polycaprolactone Microfiber

    JIAO YongjieLI ChaojingLI QiweiLIU Laijun...
    280-285页
    查看更多>>摘要：Improving wound healing efficiency is a key issue for high performance dressings. The surface topology of fibers in wound dressings plays an important role in regulating cell behaviors during the regeneration. Herein, a polycaprolactone ( PCL ) scaffold with a shish-kebab structure was prepared by electrospinning and solution-induced crystallization. L929 cells were used to investigate the behavior of fibroblasts on the multi-level microfiber. The results showed that the shish-kebab fiber-based scaffold enhanced the cell proliferation when compared with the normal fiber and the fiber with a porous structure. Protein absorption, cell adhesive force, and cell modulus also increased by the shish-kebab fiber. The shish-kebab fiber-based scaffold with improved fibroblast-regulation ability can be applied in rapid wound healing.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Zero-Sequence Current Suppression Strategy for Open-End Winding Permanent Magnet Synchronous Motor Based on Model Predictive Control

    LIU HuashanLI JieYAO Fei
    286-292页
    查看更多>>摘要：Compared with the traditional three-phase star connection winding, the open-end winding permanent magnet synchronous motor ( OW-PMSM ) system with a common direct current ( DC ) bus has a zero-sequence circuit, which makes the common-mode voltage and the back electromotive force ( EMF) harmonic generated by the inverters produce the zero-sequence current in the zero-sequence circuit, and the zero-sequence current has great influence on the operation efficiency and stability of the motor control system. A zero-sequence current suppression strategy is presented based on model predictive current control for OW-PMSM. Through the mathematical model of OW-PMSM to establish the predictive model and the zero-sequence circuit model, the common-mode voltage under different voltage vector combinations is fully considered during vector selection and action time calculation. Then zero-sequence loop constraints are established, so as to suppress the zero-sequence current. In the end, the control strategy proposed in this paper is verified by simulation experiments.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Preserving Data Privacy in Speech Data Publishing

    SUN JiaxinJIANG JinZHAO Ping
    293-297页
    查看更多>>摘要：Speech data publishing breaches users' data privacy, thereby causing more privacy disclosure. Existing work sanitizes content, voice, and voiceprint of speech data without considering the consistence among these three features, and thus is susceptible to inference attacks. To address the problem, we design a privacy-preserving protocol for speech data publishing ( P3 S2 ) that takes the corrections among the three factors into consideration. To concrete, we first propose a three-dimensional sanitization that uses feature learning to capture characteristics in each dimension, and then sanitize speech data using the learned features. As a result, the correlations among the three dimensions of the sanitized speech data are guaranteed. Furthermore, the ( ε, δ)-differential privacy is used to theoretically prove both the data privacy preservation and the data utility guarantee of P3 S2 , filling the gap of algorithm design and performance evaluation. Finally, simulations on two real world datasets have demonstrated both the data privacy preservation and the data utility guarantee.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Method for Detecting Fluff Quality of Fabric Surface Based on Support Vector Machine

    LIN QiangqiangJIN ShoufengMA Qiurui
    298-303页
    查看更多>>摘要：In order to improve the accuracy of using visual methods to detect the quality of fluff fabrics, based on the previous research, this paper proposes a method of rapid classification detection using support vector machine ( SVM) . The fabric image is acquired by the principle of light-cut imaging, and the region of interest is extracted by the method of grayscale horizontal projection. The obtained coordinates of the upper edge of the fabric are decomposed into high frequency information and low frequency information by wavelet transform, and the high frequency information is used as a data set for training. After experimental comparison and analysis, the detection rate of the SVM method proposed in this paper is higher than the previously proposed back propagation ( BP) neural network and particle swarm optimization BP ( PSO-BP ) neural network detection methods, and the accuracy rate can reach 99.41％, which can meet the needs of industrial testing.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Comprehensive Evaluation Method for Safety Performance of Automobile Textiles

    XUE WenliangZHANG ChuanxiongSHEN TingZHANG Zhichang...
    304-315页
    查看更多>>摘要：With the gradual increase of car ownership in China and the continuous expansion of travel radius, traffic accidents caused by car safety are also increasing. As far as automobile safety itself is concerned, its evaluation method is constantly evolving, but the safety of automobile textiles, which is an important part of it, is still in its infancy. The article starts from the factors that affect the safety performance of automobiles such as automobile safety theory, vehicle ergonomics and automobile textile performance. Then, the methods of expert investigation, analytic hierarchy process, fuzzy comprehensive evaluation and data analysis are used. In this way, we obtain a grade set for a multi-level index system and determine the weight of each index. Finally, we establish a comprehensive evaluation system for safety of the automobile textiles and select parameters under extreme conditions to verify the system, which proves to be effective and feasible.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Modification Mechanism of Coconut Husk Activated Carbon Using FeSO4 and Fe( NO3 ) 3

    HUANG BangfuLIU LanpengWANG DefuLI Lu...
    316-326页
    查看更多>>摘要：Modification conditions determine the surface topography and the active material phase composition of a catalyst. To study the influence of modification on a carbon-based sorbent, coconut husk activated carbon ( AC) which was activated using HNO3 and modified by FeSO4 and Fe( NO3 ) 3 was examined. The pore textures and surface chemical characteristics of the carbon materials were examined by scanning electron microscopy ( SEM ) , Brunner-Emmet-Teller ( BET ) , X-ray diffraction ( XRD ) and Fourier transform infrared ( FTIR) spectroscopy. The surface topography, the pore structure, active materials, and functional groups of AC, AC modificated by HNO3 ( HNO3/AC for short) , and AC modificated by FeSO4 and Fe(NO3)3(Fe/AC for short) were systematically studied. Subsequently, the mechanism of modifying the conditions for the carbon materials was determined. Results showed that the surface micro topography of HNO3/AC became unsystematic and disordered. After modification with FeSO4 , the ferriferous oxide was mainly present as a near-spherical crystal. Ferriferous oxides from Fe ( NO3 ) 3 modification mainly exhibited a plate shape. HNO3 modification could enlarge the pores but decrease the specific surface area of AC. FeSO4 modification resulted in a new net post structure in the pore canal of AC. Fe(NO3)3 modification caused the pore space structure to develop in the interior, and a higher calcination temperature was useful for ablation. The ash content of the AC was substantially reduced upon HNO3 modification. Upon FeSO4 modification, α-FeOOH, α-Fe2 O3 and γ-Fe2 O3 coexisted under the condition of a lower concentration of FeSO4 and a lower calcination temperature, and a higher FeSO4 concentration and calcination temperature generated moreα-Fe2 O3 . The same Fe ( NO3 ) 3 modification and a higher calcination temperature were beneficial to the minor chipping formation ofγ-Fe2 O3 . A higher Fe( NO3 ) 3 loading produced a lower graphitization degree. HNO3 modification formed various new oxygen-containing functional groups and few nitrogen-containing groups. Based on the cover, FeSO4 and Fe ( NO3 ) 3 modification could decrease the oxygen-containing and nitrogen-containing functional groups. These results could optimize the modification condition and improve physical and chemical properties ofcarbon-based sorbents.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Reconstruction of Probability Density Function for Gamma Distribution

    FAN JinweiLI ZhongshengTIAN Bin
    327-333页
    查看更多>>摘要：The probability distributions of small sample data are difficult to determine, while a large proportion of samples occur in the early failure period, so it is particularly important to make full use of these data in the statistical analysis. Based on gamma distribution, four methods of probability density function ( PDF ) reconstruction with early failure data are proposed, and then the mean time between failures ( MTBF ) evaluation expressions are concluded from the reconstructed PDFs. Both theory analysis and an example show that method 2 is the best evaluation method in dealing with early-failure-small-sample data. The reconstruction methods of PDF also have certain guiding significance for other distribution types.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Undrained Stability Analysis of Three-Dimensional Rectangular Trapdoor in Clay

    YIN XiaojunXIE Jun
    334-339页
    查看更多>>摘要：A new collapse model of the trapdoors, three-dimensional rectangular trapdoor ( 3DRT) , is presented for ground surface collapse. Undrained stability of 3DRT is examined with the upper bound method of plasticity limit analysis theory. The soil where the trapdoors are located is assumed to be a perfectly plastic model with a Tresca yield criterion. Block analysis technique is employed to investigate the collapse of 3DRT. The model is divided into five different block types and added up to ten rigid blocks. According to the law of conservation of energy, the critical stability ratios of 3DRT are obtained through a search proceeding. The results of upper bound solution for 3DRT are given, and three trapdoor models with depth various are discussed during the application in the stability analysis of square trapdoors. The critical stability ratios can be used in the design of underground excavation and support force.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据

    Emergency Evacuation Plan of the Louvre Based on Cellular Automata Superposition Model

    XIE JiayongLI QiqiLONG Jiali
    340-348页
    查看更多>>摘要：The Louvre is a famous French building and a tourist attraction. It is of great significance to make an emergency evacuation plan for tourists. A social force model and cellular automata were established to simulate the crowd evacuation in unidimensional plane, and then the downstairs model was considered to simulate three-dimensional evacuation. Finally the real evacuation situation was simulated, considering the hazard source as well as other factors. The study found that the exit was closer to the corner, and the evacuation distance of descending stairs could be controlled between 0. 3 and 0. 6 m to maximize evacuation efficiency. The influence of the hazard at the edge of the channel was greater than that at the center of the channel. Therefore, in the process of evacuation, the staff should be guided to the nearest exit, to maintain the optimal distance, the staff to eliminate the danger source in the center of the passage.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 维普
    • 万方数据