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Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie Wang Wei Wang Xuheng Chen Junfang bao Qiuyue Hao Heng zheng Runsheng Xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

反对称离散Hopfield网络的稳定性理论

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电子学报 1999年第1期27卷 93-97页

作者：许进保铮西安电子科技大学电子工程研究所

本文应用一种新的方法———图论方法重新系统地研究了反对称离散Ｈｏｐｆｉｅｌｄ网络的稳定性理论，这种方法回避了构造能量函数（即李雅浦洛夫函数）的麻烦，本文给出了网络收敛于长度为４的环吸引子的充分及必要条件，讨论了ｐ阶反... 详细信息

本文应用一种新的方法———图论方法重新系统地研究了反对称离散Ｈｏｐｆｉｅｌｄ网络的稳定性理论，这种方法回避了构造能量函数（即李雅浦洛夫函数）的麻烦，本文给出了网络收敛于长度为４的环吸引子的充分及必要条件，讨论了ｐ阶反对称离散Ｈｏｐｆｉｅｌｄ网络含有长度为４的环吸引子的数目，并提出了几个尚待解决的猜想．

关键词： Hopfield网络反对称型 DHNN 人工神经网络

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插值子波变换的优化设计

电子学报 1999年第8期27卷 16-18,15页

作者：水鹏朗保铮西安电子科技大学雷达信号处理重点实验室

Ｄｅｓｌａｕｒｉｅｒｓｄｕｂｕｃ子波是一类被广泛采用的插值子波，其不足之处在于系统冗余较大，一般插值子波是Ｄｅｓｌａｕｒｉｅｒｓｄｕｂｕｃ子波的推广，设计上具有更大的灵活性．本文研究了一般插值子波系统的性质、优化... 详细信息

Ｄｅｓｌａｕｒｉｅｒｓｄｕｂｕｃ子波是一类被广泛采用的插值子波，其不足之处在于系统冗余较大，一般插值子波是Ｄｅｓｌａｕｒｉｅｒｓｄｕｂｕｃ子波的推广，设计上具有更大的灵活性．本文研究了一般插值子波系统的性质、优化设计准则以及有效的优化设计方法．最后，通过对实测信号的压缩说明了本文方法的有效性．

关键词：插值子波冗余度优化设计信号处理子波变换

Blind Multipath Identification: A Weighted Linear Prediction Approach

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The Journal of China Universities of Posts and Telecommunications 2003年第4期10卷 39-44页

作者： WANG bao-yun,zheng bao-yu(Department of Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, P.R. China) Department of Information Engineering Nanjing University of Posts and Telecommunications Nanjing 210003

Blind channel identification exploits the measurable channel output signaland some prior knowledge of the statistics of the channel input signal. However, in many scenarios,more side information is available, In digital communication systems, the pulse-shaping filter inthe transmitter and the anti-aliasing filter in the receiver are often known to the *** of this prior knowledge can simplify the channel identification problem. In this paper,we pose the multipath identification problem as solving a group of linear equations. While we solvethe linear equations in the least-square meaning, a weight matrix can be introduced to improve theperformance of the estimator. The optimal weight matrix is derived. Compared with the existingLinear Prediction (UP) based multipath identification approach, the proposed approach offers asubstantial performance gain.

关键词： linear prediction blind channel identification multipath channel

Affinity peptide developed by phage display selection for targeting gastric cancer

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World Journal of Gastroenterology 2012年第17期18卷 2053-2060页

作者： Wen-Jie Zhang Yan-Xia Sui Arun Budha Jian-bao zheng Xue-Jun Sun Ying-Chun Hou Thomas D Wang Shao-Ying Lu Department of General Surgery The First Affiliated Hospital of Medical School Xian JiaotongUniversity Xi＇an 710061 Shaanxi Province China The Third Hospital of Chengdu Chengdu610031 Sichuan Province China Shaanxi Normal University Xi＇an 710061Shaanxi Province China Department of Medicine Division of Gastroenterology and Hepatology School of Medicine Universityof Michigan Ann Arbor MI 48109 United States

AIM:To develop an affinity peptide that binds to gastric cancer used for the detection of early gastric ***:A peptide screen was performed by biopanning the PhD-12 phage display library,clearing non-specific binders against tumor-adjacent normal appearing gastric mucosa and obtaining selective binding against freshly harvested gastric cancer *** binding of selected peptides was confirmed by bound phage counts,enzyme-linked immunosorbent assay,competitive inhibition,fluorescence microscopy and semi-quantitative analysis on immunohistochemistry using different types of cancer ***:Approximately 92.8% of the non-specific phage clones were subtracted from the original phage library after two rounds of biopanning against normal-appearing gastric *** the third round of positive screening,the peptide sequence AADNAKTKSFPV(AAD) appeared in 25%(12/48) of the analyzed *** the control peptide,these values were 6.8 ± 2.3,5.1 ± 1.7,3.5 ± 2.1,4.6 ± 1.9 and 1.1 ± 0.5,*** values for AAD peptide were statistically signif icant(P < 0.01) for gastric cancer as compared with other histological classif ications and control ***:A novel peptide is discovered to have a specific binding activity to gastric cancer,and can be used to distinguish neoplastic from normal gastric mucosa,demonstrating the potential for early cancer detection on endoscopy.

关键词： Gastric cancer Peptide Phage library Molecular imaging Early detection Immunohistochemistry Enzyme-linked immunosorbent assay

Target classification with low-resolution radar based on dispersion situations of eigenvalue spectra

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Science China(Information Sciences) 2010年第7期53卷 1446-1460页

作者： CHEN Feng, LIU HongWei, DU Lan & bao zheng National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China National Laboratory of Radar Signal Processing Xidian University Xi’an China

Most low-resolution radar systems, especially ground surveillance radar systems, work at relatively low pulse repeat frequency (PRF) and with short time-on-target (TOT) (duration in scanning). Low PRF leads to Doppler ambiguity and short TOT results in low Doppler resolution, which poses a problem to target classification with low-resolution radar based on the jet engine modulation (JEM) characteristic of radar echo. From the pattern classification viewpoint, we propose a method of using dispersion situations of JEM eigenvalue spectra to categorize aeroplanes into three kinds, namely turbojet aircraft, prop aircraft and helicopter. We analyze the mathematical model of JEM echoes consisting of a series of line spectra and regard them as a sum of several series of harmonious waves. Classification features can be extracted based on the harmonious wave sum model. Some schemes for extracting features from echoes within or between pulses are proposed. Low-dimensional features are extracted to reduce computation burden. Our methods do not compensate for the fuselage echoes and are insensitive to the variation of fuselage Doppler. The feasibility of our methods is demonstrated by simulation experiment.

关键词： jet engine modulation (JEM) low-resolution radar low pulse repeat frequency (PRF) short time-on-target (TOT) target classification

Additive Rank-1 Preservers Between Hermitian Matrix Spaces Over Quaternion Division Algebra

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Chinese Quarterly Journal of Mathematics 2007年第4期22卷 482-491页

作者： HAN Jing-wen zheng bao-dong Department of Mathematics Tianjin University of Finance and Economics Tianjin 300222 China Department of Mathematics Harbin Institute of Technology Harbin 150001 China

Let Q be the quaternion division algebra over real field F, Denote by Hn（Q） the set of all n x n hermitian matrices over Q. We characterize the additive maps from Hn（Q） into Hm（Q） that preserve rank-1 matrices when the rank of the image of In is equal to n. Let QR be the quaternion division algebra over the field of real number R. The additive maps from Hn （QR） into Hm （QR） that preserve rank-1 matrices are also given.

关键词： additive map quaternion division algebra Hermitian matrix rank

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两通道正则正交的主分量滤波器组设计

电子学报 2001年第3期29卷 326-328页

作者：水鹏朗保铮西安电子科技大学雷达信号处理重点实验室西安710071

本文研究了两通道正则正交的主分量滤波器组设计 .给出了正则乘积滤波器的参数表示。

关键词：正则正交设计主分量滤波器组可行解迭代算法

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机动目标ISAR超分辨成像的分辨能力研究

电子学报 2001年第3期29卷 426-428,431页

作者：孙长印保铮西安电子科技大学雷达信号处理重点实验室西安710071

机动目标ISAR超分辨成像须考虑三维转动造成多普勒频率的时变性质 ,同时 ,成像质量也受到信号模型误差的影响 ,如包络对齐误差和自聚焦误差 .采用误差参数和目标特征参数联合估计可显著提高机动目标成像的分辨率 .本文将误差参数和目标... 详细信息

机动目标ISAR超分辨成像须考虑三维转动造成多普勒频率的时变性质 ,同时 ,成像质量也受到信号模型误差的影响 ,如包络对齐误差和自聚焦误差 .采用误差参数和目标特征参数联合估计可显著提高机动目标成像的分辨率 .本文将误差参数和目标参数联合建模 ,对信号模型解的不唯一性提出一种约束条件 ,引入分辨能力的概念。

关键词：逆合成孔径雷达超分辨成像机动目标分辨能力