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Structural Description of Polyaromatic Nucleus in Residue

China Petroleum Processing & Petrochemical Technology 2007年第3期9卷 35-42页

作者： Zhang Huicheng yan yongjie Sun Wanfu Wang Jifeng Department of Energy Chemical Engineering East China University of Science and Technology Shanghai 200237 Fushun Research Institute of Petroleum and Petrochemicals

The proton nuclear magnetic resonance spectroscopy （1H-NMR）, the synchronous fluorescence spectrometry （SFS） and the ruthenium ions catalyzed oxidation （RICO） method were used to determine the chemical structure of polyaromatic nucleus in Oman residue fractions. The results of 1H-NMR analyses showed that the average numbers of aromatic rings in the aromatics, resins and asphaltenes units were 3.2, 5.6 and 8.2, respectively. SFS was used to investigate the distribution of aromatic rings in residue fractions, the main distribution range of aromatic rings in aromatics, resins and asphaltenes were 3 4 rings, 3--5 rings and more than 5 rings, respectively. The aromatic network in residue fractions was oxidized to produce numerous carboxylic acids. The types and content of benzenepolycarboxylic acids, such as phthalic acid, benzenetricarboxylic acids, benzenetetracarboxylic acids, benzenepentacarboxylic acid and benzenehexacarboxylic acid disclosed the condensed types of aromatic nuclei in the core. The biphenyl fraction （BIPH）, the cata-condensed fraction （CATA）, the peri-condensed fraction （PERI） and the condensed index （BCI） were calculated based on the benzenepolycarboxylic acids formed. The results implied that there was less biphenyl type structures in all residue fractions. The aromatics fraction was almost composed of the cata-condensed type system, and the asphaltenes fraction was wholly composed of the peri-condensed type system, while in the resins fraction co-existed the two types, herein the peri-con- densed type was predominant over the cata-condensed type. Based on the analytical results obtained in the study, the components --aromatics, resins and asphaltenes -- were given the likely structural models.

关键词： proton nuclear magnetic resonance spectroscopy synchronous fluorescence spectrometry ruthenium ions catalyzed oxidation residue structure

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Preparation of Square and Labyrinth-Like TiO_2 Particles for Photo-Degradation of Organic Pollutants

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Acta Metallurgica Sinica(English Letters) 2014年第6期27卷 988-994页

作者： yongjie yan Shasha Zhang Guohua Jiang Xia Li Zhen Wei Wenxing Chen Junmin Wan Qixin Honours College Zhejiang Sci-Tech University Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT) Ministry of EducationZhejiang Sci-Tech University Department of Materials Engineering Zhejiang Sci-Tech University

Square and labyrinth-like titanium dioxide particles were successfully synthesized by a simple hydrothermal method with assistant of halloysite nanotubes. The morphology and microstructure of as-prepared photo-catalysts were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The photo-catalytic activity of as-prepared catalysts was evaluated by degradation of organic pollutants（Rhodamine B, methylene blue and methanol） under UV light irradiation.

关键词： Microstructure Photolysis Decomposition

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Guarding Legal Communication with Smart Jammer:Stackelberg Game Based Power Control Analysis

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China Communications 2021年第4期18卷 126-136页

作者： Zhe Su Nan Qi yongjie yan Zhiyong Du Jiaxin Chen Zhibin Feng Qihui Wu College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China State Key Laboratory of Air Traffic Management System and Technology Nanjing 210014China th Research Institute of China Electronics Technology Group Corporation Nanjing 210007China College of Information and Communication National University of Defense TechnologyChangsha 430010China College of Communications Engineering Army Engineering University of PLANanjing 210000China

This paper investigates a power control problem in a jamming system,where a separate smart jammer is deployed to ensure the communication security of the legal ***,due to power leakage,the smart jammer may incur unintentional interference to legal *** key is how to suppress illegal communication while limit the negative impact on legal user.A jamming counter measure Stackelberg game is formulated to model the jamming power control dynamic of the *** smart jammer acts as a leader to sense and interfere illegal communications of the illegal user,while the illegal user acts as a *** the game,the impact of uncertain channel information is taken into *** to whether illegal user considers the uncertain channel information,we investigate two scenarios,namely,illegal user can obtain statistical distribution and accurate information of interference channel gain and its own cost,*** work not only proposes a jamming counter measure iterative algorithm to update parameters,but also gives two solutions to obtain the Stackelberg equilibrium(SE).The power convergence behaviours under two scenarios are analyzed and ***,brute force is used to verify the accuracy of the SE value further.

关键词： power control jamming communication Received:Apr.13,2020 Revised:Sep.01,2020 Editor:Haifeng Zheng systems Stackelberg game

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Construction of a recombinant yeast strain converting xylose and glucose to ethanol

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Frontiers in Biology 2008年第2期3卷 165-169页

作者： Shen TIAN Jinxin ZANG Yaping PAN Jikai LIU Zhenhong YUAN yongjie yan Xiushan yanG College of Life Science Capital Normal UniversityBeijing 100037China East China University of Science and Technology Shanghai 200237China

Candida shehatae gene xyl1 and Pichia stipitis gene xyl2,encoding xylose reductase(XR)and xylitol dehydrogenase(XD)respectively,were amplified by *** genes xyl1 and xyl2 were placed under the control of promoter GAL in vector pYES2 to construct the recombinant expression vector *** the vector pYES2-P12 was transformed into *** YS58 by LiAc to produce the recombinant yeast *** alcoholic ferment indicated that the recombinant yeast YS58-12 could convert xylose to ethanol with the xylose consumption rate of 81.3%.

关键词： recombinant Saccaromyces cerevisiae xyl1 xyl2 xylose glucose ethanol

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生物质裂解油模拟物乙酸的催化重整制氢

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石油化工 2010年第10期39卷 1082-1088页

作者：谢丹颜涌捷华东理工大学生物质能研究中心上海200237

选取乙酸作为生物质裂解油的模拟物,在600～900℃下进行蒸汽催化重整反应,研究了乙酸在Ni/Al_2O_3、Al_2O_3和Ni催化剂上的蒸汽重整行为。实验结果表明,在Al_2O_3催化剂中加入Ni可显著提高H_2收率,使反应向重整制氢的方向进行;在Ni/Al_2... 详细信息

选取乙酸作为生物质裂解油的模拟物,在600～900℃下进行蒸汽催化重整反应,研究了乙酸在Ni/Al_2O_3、Al_2O_3和Ni催化剂上的蒸汽重整行为。实验结果表明,在Al_2O_3催化剂中加入Ni可显著提高H_2收率,使反应向重整制氢的方向进行;在Ni/Al_2O_3和Al_2O_3催化剂上的乙酸重整反应中,通入蒸汽可提高H_2收率,而在Ni催化剂上的乙酸重整反应中,通入蒸汽对H_2收率影响不大。反应前后催化剂的BET和SEM表征结果显示,反应后催化剂的比表面积和孔体积明显降低,平均孔径增大,说明催化效率降低的原因是积碳覆盖了催化剂表面的活性位,堵塞了催化剂的孔道,特别是堵塞了微孔,导致催化活性逐渐丧失。

关键词：生物质裂解油乙酸蒸汽催化重整镍基催化剂制氢

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生物质快速裂解油的催化裂解精制

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化学反应工程与工艺 2005年第3期21卷 227-233页

作者：郭晓亚颜涌捷上海大学嘉定校区化工系上海201800 华东理工大学能源化工系上海200237

在固定床反应器内采用不同催化剂进行了生物质快速裂解油的催化裂解。在温度340～420℃,质量空速2.9～5.6h^(-1)的条件下考察了催化剂、温度、重量空速诸因素对精制各产物产率的影响。结果表明,在重量空速3.7h^(-1),温度380℃时,获得了... 详细信息

在固定床反应器内采用不同催化剂进行了生物质快速裂解油的催化裂解。在温度340～420℃,质量空速2.9～5.6h^(-1)的条件下考察了催化剂、温度、重量空速诸因素对精制各产物产率的影响。结果表明,在重量空速3.7h^(-1),温度380℃时,获得了较高的精制生物油产率,44.68%;用 HZSM-5(50)催化剂得到了较高的有机相产率;而用高岭土催化剂时结焦量较低。催化剂再生实验表明,结焦是催化裂解中致使催化剂失活和使用寿命降低的主要原因。产物分析表明,精制油中的含氧化合物如有机酸、酯、醇、酮、醛的含量大大降低,而不含氧的芳香族碳氢化合物和多环芳香碳氢化合物含量增加了。

关键词：裂解生物质油固定床反应器催化裂解再生催化剂精制

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纤维素连续催化水解研究

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太阳能学报 1999年第1期20卷 55-58页

作者：颜涌捷任铮伟华东理工大学能源系

以氯化铁和氯化亚铁为催化剂，在液体连续流动的条件下研究了木屑在稀盐酸中的水解过程。考察了水解时间和温度、催化剂浓度和组成及液固比等对糖产率的影响。证明氯化亚铁的催化效果比氯化铁显著，在适当的水解条件下，木屑的转化率可... 详细信息

以氯化铁和氯化亚铁为催化剂，在液体连续流动的条件下研究了木屑在稀盐酸中的水解过程。考察了水解时间和温度、催化剂浓度和组成及液固比等对糖产率的影响。证明氯化亚铁的催化效果比氯化铁显著，在适当的水解条件下，木屑的转化率可达７１％以上。

关键词：生物质木屑水解催化剂纤维素酒精

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Collaborative Path Planning based on MAXQ Hierarchical Reinforcement Learning for Manned/Unmanned Aerial Vehicles

Collaborative Path Planning based on MAXQ Hierarchical Reinf...

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第三十九届中国控制会议

作者： yongjie yan Hongjie Wang Xianfeng Chen State Key Laboratory of Air Traffic Management System and Technology CETC28

Under the complex situation of Manned/Unmanned Aerial Vehicles（MAV/UAV） mixed operation, it is difficult to design proper control strategy and parameter for UAV collaborative actions. To solve this problem, a UAV reinforcement learning algorithm based on game theory is proposed. Considering the characteristics of multi-Vehicles collaboration, the merits of MAXQ hierarchical reinforcement learning and multi-agent are combined, and propose a UAV coordination method based on MAXQ multi-agent hierarchical reinforcement learning, in order to improve the UAV adaptation and self-coordination ability under complex situation of mixed operation. It is demonstrated by the simulation results that the proposed hierarchical reinforcement learning algorithm performs better and its learning rate and efficiency are higher than the traditional hierarchical reinforcement learning.

关键词： MAV/UAV collaboration Collaborative path planning MAXQ hierarchical reinforcement learning Multi-Vehicles coordination

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Electrochemical evaluation of the inhibitory effects of acetic acid on Saccharomyces cerevisiae

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High Technology Letters 2006年第2期12卷 203-206页

作者：袁振宏 Zhao Jinsheng yan yongjie yang Zhengyu Department of Chemical Engineering for Energy Resources East China University of Science ＆ Technology Shanghai 200237 P.R.China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100101 P.R. China

A mediated electrochemical method was proposed for toxic evaluation of acetic acid on S. cerevisiae AS. 380, and menadione/ferricyanide was chosen as the mediator system. The variance in electrochemical response in the absence and presence of increasing concentrations of acetic acid were used to indicate the inhibitory effects of weak acid on the yeast. The inhibitory effects of acetic acid on glucose consumption during menadione mediated reduction of ferricyanide were also measured for comparison purpose. The relative limiting current and the glucose consumption were reduced by 64.5% and 61%, respectively, in the presence of 4g/L acetic acid at pH 4.0. The results showed that the electrochemical method can provide us with an appropriate and convenient tool for cytotoxic evaluation.

关键词： electrochemical measurements acetic acid toxicity yeast mediator

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基于极值理论的地基增强系统完好性评估方法

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兵工学报 2024年第2期45卷 641-650页

作者：胡杰严勇杰丁辉中国电子科技集团公司第二十八研究所江苏南京210007 空中交通管理系统全国重点实验室江苏南京210007

针对地基增强系统(Ground Based Augmentation System,GBAS)完好性风险事件的极端性而导致的无法通过风险事件发生频率评估系统性能的问题,提出一种基于极值理论的GBAS完好性评估方法。根据机载端(位置域)输出的位置误差和保护级计算安... 详细信息

针对地基增强系统(Ground Based Augmentation System,GBAS)完好性风险事件的极端性而导致的无法通过风险事件发生频率评估系统性能的问题,提出一种基于极值理论的GBAS完好性评估方法。根据机载端(位置域)输出的位置误差和保护级计算安全系数,并利用区间极大值模型对安全系数进行建模描述以获得其分布模型;利用极大似然法估计安全系数模型参数,进而利用模型外推法计算GBAS完好性风险值。给出GBAS完好性评估流程,并利用GBAS系统进行了验证实验。研究结果表明:对于C类GBAS进近服务而言,基于全球定位系统(Global Position System,GPS)增强GBAS和基于北斗卫星导航系统(Beidou Navigation Satellite System,BDS)增强GBAS可用性均大于99.9999%;对于F类GBAS进近服务而言,BDS GBAS可用性能要优于GPS GBAS;根据7 d观测数据外推得到的GPS GBAS垂直和侧向完好性风险值分别为4.557×10^(-8)/进近和5.152×10^(-8)/进近,BDS GBAS垂直和侧向完好性风险值分别为1.612×10^(-7)/进近和1.823×10^(-7)/进近,满足航空器终端区I类进近与着陆导航性能需求。

关键词：地基增强系统完好性风险极值理论安全系数

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