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Effect of the lead deposition on the performance of the negative electrode in an aqueous lead-carbon hybrid capacitor

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Journal of Energy Chemistry 2021年第4期30卷 509-516页

作者： Jinpeng Bao Nan Lin Haibo Lin Jiaxiang Guo hongyu gao Weiqi gao State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun 130012JilinChina Institute of Energy and Process Systems Engineering Braunschweig University of TechnologyBraunschweigGermany Zhuhai College of Jilin University Zhuhai 519041GuangdongChina

Lead-carbon hybrid capacitors are the electrochemical devices between supercapacitors and lead-acid batteries,with low prices,stability in high and low temperature,good security and broad application *** paper introduces an electrodeposition behavior of Pb^(2+)on the negative electrode,which can improve the cycle life of the lead-carbon hybrid *** the charging process,lead ions in the electrolyte can diffuse from the positive electrode of the lead-carbon hybrid capacitor into the negative *** charging at a low current density,the lead ions around the negative electrode can be reduced to lead,and it is then quickly converted to lead sulfate *** the increase of the number of cycles,the final result is *** can reduce the specific surface area of the electric double layer,thereby reducing the capacitance performance of the carbon *** a result,it reduces the charge-discharge efficiency of the lead-carbon hybrid *** service life of lead-carbon hybrid capacitor is significantly improved by the inhibition of lead deposition by anion exchange *** capacity retention rate at 5 A/g is improved from 84%after 1000 cycles to 95%after 10,000 *** discovery of lead deposition in the negative electrode is conducive to improving the performance of long-life lead-carbon hybrid capacitors.

关键词： Lead-carbon hybrid capacitor Negative electrode Electrodeposition Cycle life

Systematic assessment of dredged sludge dewaterability improvement with different organic polymers based on analytic hierarchy process

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Journal of Environmental Sciences 2021年第5期33卷 311-321页

作者： Zhenzhen Song hongyu gao Wanwan Liu Liqing Li Weijun Zhang Dongsheng Wang Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074HubeiChina State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Institute for resources and environmental engineering Shanxi UniversityTaiyuan 030006ShanxiChina School of Environmental Studies China University of GeosciencesWuhan 430074HubeiChina

Organic polymeric flocculants are commonly used in improving dredged sludge dewaterability, but less attention has been paid to residual water quality. In this paper, the effects of cationic etherified starch(CS) and poly-dimethyl diallyl ammonium chloride(PDDA) on dredged sludge dewatering efficiency and residual water quality of Baiyangdian lake were comprehensively investigated and evaluated by analytic hierarchy process(AHP). The results indicated that PDDA had stronger electrical effect and flocculation performance compared with CS, resulting in more efficient dewatering performance. PDDA can reduce the pollutants of discharged residual water, while CS significantly promoted the increase of NH_(4)^(+)-N and NO_(3)^(–)-N in the residual water. The increase of NH_(4)^(+)-N in the residual water of CS was due to the release of dredged sludge, while the increase of NO_(3)^(-)-N was introduced by CS leaching. AHP showed that PDDA performed better in flocculation treatment of dredged sludge than other organic polymers. This work provides a method for optimization of flocculation treatment for dredged sludge dewaterability.

关键词： Dredge sludge dewatering Flocculation evaluation model Residual water quality Analytic hierarchy process

Synthesis of highly effective absorbents with waste quenching blast furnace slag to remove Methyl Orange from aqueous solution

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Journal of Environmental Sciences 2017年第3期29卷 68-77页

作者： hongyu gao zhenzhen song Weijun Zhang Xiaofang Yang Xuan Wang Dongsheng Wang Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074China State Key Laboratory of Environmental Aquatic Chemistry Research Center for co-Environmental SciencesChinese Academy of SciencesBeijing 100085China Technology Center ZhongYang Steel Co.Ltd.Zhongyang 033400China School of Environmental Studies China University of GeosciencesWuhan 430074China

Water quenching blast furnace slag （WQBFS） is widely produced in the blast furnace iron making process. It is mainly composed of CoO, MgO, A1203, and SiO2 with low contents of other metal elements such as Fe, Mn, Ti, K and No. In this study, WQBFS was treated with grinding, hydrochloric acid acidification, filtration, filtrate extraction by alkali liquor and a hydration reaction. Then BFS micropowder （BFSMP）, BFS acidified solid （BFSAS） and BFS acid-alkali precipitate （BFSAP） were obtained, which were characterized by X-ray diffrac- tion, scanning electron microscopy, X-ray fluorescence and Brunauer-Emmet-Teller （BET） specific surface area. The decoloration efficiency for Methyl Orange （MO） was used to evaluate the adsorptive ability of the three absorbents. The effects of adsorptive reaction conditions （pH and temperature of solution, reaction time, sorbent dosage and initial concentration） on MO removal were also investigated in detail. The results indicated that BFSAP performed better in MO removal than the other two absorbents. When the pH value of MO solutions was in the range 3.0-13.0, the degradation efficiency of a solution with initial MO concentration of 25 mg/L reached 99.97% for a reaction time of 25 rain at 25℃. The maximum adsorption capacity of BFSAP for MO was 167 mg/g. Based on optimized experiments, the results conformed with the Langrnuir adsorption isotherm and pseudo-second-order kinetics. Among inorganic anions, SO2- and PO4- had significant inhibitory effects on MO removal in BFSAP treatment due to ion-exchange adsorption.

关键词： Water-quench blast furnace slagBFS micro powderModified BFSMethyl orange decolorantAdsorbability

基于改进LSTM的数码雷管模组印刷质量预测

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沈阳理工大学学报 2025年第1期44卷 9-18,24页

作者：许可高宏宇宫华孙文娟沈阳理工大学理学院沈阳110159 沈阳理工大学自动化与电气工程学院沈阳110159 辽宁省兵器工业智能优化与控制重点实验室沈阳110159

由于数码雷管模组印刷过程中生产工艺复杂、强时序性等特点,其质量的精准预测已成为提高产品质量管理水平的关键。基于此提出一种改进长短期记忆(long short-term memory,LSTM)网络的数码雷管模组印刷质量预测模型。首先根据数码雷管模... 详细信息

由于数码雷管模组印刷过程中生产工艺复杂、强时序性等特点,其质量的精准预测已成为提高产品质量管理水平的关键。基于此提出一种改进长短期记忆(long short-term memory,LSTM)网络的数码雷管模组印刷质量预测模型。首先根据数码雷管模组印刷过程提炼机器运行参数、环境参数与检测参数作为印刷产品质量的原始特征,并对关键检测参数进行时序特征重构以增强特征表达能力;其次基于改进的LSTM网络建立数码雷管模组印刷特征提取框架,采用卷积神经网络提取空间特征避免LSTM挖掘高维印刷特征时隐含关系的不足,通过全局注意力机制自适应学习不同时刻印刷特征对印刷产品质量的贡献度,为LSTM提取的深层时序特征分配不同权值;最后以深层特征作为输入,通过全连接网络实现数码雷管模组印刷产品的质量预测。实验结果表明,相较于BP神经网络、门控循环单元网络、LSTM等预测方法,改进的LSTM网络有效提高了数码雷管模组印刷产品质量的预测精度。

关键词：模组印刷质量预测长短期记忆网络特征重构

Three Investment of Big Buyer,cic

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China's Foreign Trade 2008年第3期 22-25页

作者： gao hongyu From School of Economics of Renmin University

On September 29, 2007, China Investment Corporation （CIC）, the country＇s long-awaited state foreign exchange （forex） investment company, was inaugurated with a large amount of registered capital US$ 200 billion, and charged with the task of making better use of the nation＇s huge foreign exchange reserves. Lou Jiwei, the current Deputy Secretary General from the State Council will serve as Chairman, and has said that CIC will explore multiple channels for foreign exchange, and maximize its proceeds via long-term investments, managed within a range of acceptable risk. The establishment of CIC was regarded as a landmark event in the reform of China＇s forex management system.

关键词：中国投资有限责任公司长期投资企业管理投资领域

Three Investment of Big Buyer,cic

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China's Foreign Trade 2008年第Z2期 22-25页

作者： gao hongyu School of Econom-jcs of Renidin University

The establishment of CIC was regarded as a landmark event in the reform of China’s forex management system. On September 29,2007,China Investment Corporation (CIC),the country’s long-awaited state foreign exchange (forex) investment company,was inaugurated with a large amount of registered capital US$ 200 billion,and charged with the task of making better use of the na- tion’s huge foreign exchange *** Jiwei, the current Deputy Secre- tary General from the State Council will serve as Chairman,and has said

关键词： In US Three Investment of Big Buyer,cic CIC IPO

Efficient Algorithm based on Macro ForestTransducer for XPath Query over Stream

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计算机科学与技术汇刊（中英文版） 2016年第1期5卷 14-23页

作者： Jing Ao Husheng Liao hongyu gao Hang Su College of Computer Science Beijing University of Technology Beijing 100124 China School of Software Engineering Beijing University of Technology Beijing 100124 China

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面向对象程序设计语言的部分求值动作分析

计算机工程 2006年第9期32卷 72-74页

作者：高红雨廖湖声北京工业大学计算机学院北京100022

提出了一种面向对象程序设计语言的部分求值动作分析方法,利用带有绑定时间标注的源程序生成部分求值动作原语序列,作为各种部分求值实现策略的基础。这种方法使部分求值算法独立于具体的实现方法,从而降低了部分求值系统的实现难度。

关键词：部分求值动作分析面向对象

Surface-Enhanced Raman Scattering of Nano-silver against ***.

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Surface-Enhanced Raman Scattering of Nano-silver against ***...