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无汞碱性锌锰电池的研制

电源技术 2000年第1期24卷 8-11页

作者：魏杰周定周德瑞哈尔滨工业大学应用化学系黑龙江哈尔滨150001

通过浸泡产气实验,筛选和研制出两种缓蚀剂MA和QS(均为有机盐加添加剂),并实际组装了无汞LR6型碱性锌锰电池,考察了代汞缓蚀剂对其放电性能的影响。结果表明:以MA和QS为代汞缓蚀剂所组装的无汞LR6型碱性锌锰电池的放电性能,均远远超过... 详细信息

通过浸泡产气实验,筛选和研制出两种缓蚀剂MA和QS(均为有机盐加添加剂),并实际组装了无汞LR6型碱性锌锰电池,考察了代汞缓蚀剂对其放电性能的影响。结果表明:以MA和QS为代汞缓蚀剂所组装的无汞LR6型碱性锌锰电池的放电性能,均远远超过了国家行业标准QB1185-91中的要求,尤其是含QS的无汞电池的放电性能。

关键词：碱性锌锰电池缓蚀剂无汞电池

Controlled cationic ring-opening polymerization of L-lactide by organic ion pair: novel approach to isotactic-rich and crystalline polylactide

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Science China Chemistry 2025年第1期 394-402页

作者： Zhiqiang ding Mingqian Wang Zijing zhou Bin Wang Yuesheng Li Tianjin Key Laboratory of Composite & Functional Materials School of Materials Science and Engineering Tianjin University

Living/controlled cationic ring-opening polymerization （ROP） of L-lactide is a promising approach to isotactic-rich and crystalline poly（L-lactide）.In contrast with the unsubstituted lactones,L-LA can not be polymerized by organic Lewis acids or carbenium ions,and the state of the art in this field is the cationic ROP of L-LA catalyzed by Br?nsted acid/alcohol system via activated monomer ***,we reported the first example of controlled cationic ROP of L-LA by using Meerweintype ion pair[Me3O]+[B（C6F5）4]-as the catalyst.[Me3O]+[B（C6F5）4]-promoted rapid L-LA cationic polymerization in the absence of alcohol,producing isotactic-rich and crystalline PLLA without transesterification and epimerization side *** activated chain end mechanism,involving twice SN2 substitution and configuration-inversion （S→R→S） with the assistance of released Me2O,was proposed and further verified by density functional theory and control *** work expands the catalytic toolbox of isotactic-rich and crystalline polylactide *** represents a unique example of cationic-controlled polymerization of L-LA catalyzed by an organic ion pair.

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SYMBOLIC DESCRIPTION OF PERIODIC WINDOWS IN THE ANTISYMMETRIC CUBIC MAP

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Chinese Physics Letters 1985年第7期2卷 293-296页

作者： ZENG Wan-zhen ding Ming-zhou LI Jia-nan Institute of Theoretical Physics Academia SinicaBeijing

A sequence of three-letter words was constructed for the antisymmetric map X_(n+1)=F(X_(n),A)=A*X_(n)+(1-A)*X_(n),Which contains all the information about the occurrence of periodic windows on the parameter axis.

关键词： SCRIPT WINDOWS letter

Soil effect on the bearing capacity of a double-lining structure under internal water pressure

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第11期23卷 863-881页

作者： Dong-mei ZHANG Xiang-hong BU Jian PANG Wen-ding zhou Yan JIANG Kai JIA Guang-hua YANG Department of Geotechnical Engineering Tongji UniversityShanghai 200092China Key Laboratory of Geotechnical and Underground Engineering of Minister of Education Tongji UniversityShanghai 200092China State Grid Tianjin Electric Power Company Construction Branch Tianjin 300143China Guangdong Research Institute of Water Resources and Hydropower Guangzhou 510610China School of Water Conservancy Engineering Zhengzhou UniversityZhengzhou 450001China

Water conveyance tunnels usually experience high internal water pressures and complex soil ***,shield tunnels with double-lining structure have been adopted because of their high bearing *** effect of the interface between the segmental and inner linings on the bearing capacity has been widely investigated;however,the effect of soil on the internal water pressure bearing capacity has not been emphasized ***,in this study,model tests and an analytical solution are presented to elucidate the effect of soil on the internal water pressure bearing ***,model tests are conducted on double-lining models under sandy soil and highly weathered argillaceous siltstone *** internal force and earth pressure under these different soil conditions are then compared to reveal the contribution of soil to the internal water pressure bearing *** this,an analytical solution,considering the soil–double-lining interaction,is proposed to further investigate the contribution of the *** analytical solution is verified with model *** analytical solution is in good agreement with the model test results and can be used to evaluate the mechanical behavior of the double-lining and soil *** effect of soil on the bearing capacity is found to be related with the elastic modulus of the soil and the deformation state of the *** the double-lining cracks,the sandy soil contributes 3.7%of the internal water pressure but the contribution of the soil rises to 10.4%when it is the highly weathered argillaceous *** the double-lining cracks,the soil plays an important role in bearing internal water *** soil contributions of sandy soil and highly weathered argillaceous siltstones are 10.5%and 27.8%,*** effect of soil should be considered in tunnel design with the internal water pressure.

关键词： Shield tunnel Double-lining Bearing capacity Soil condition Internal water pressure

Diuretic Agents in Treatment of Sudden Deafness

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Journal of Otology 2008年第1期3卷 35-38页

作者： JI Chang-you LI Hong-tao zhou ding-rong CHEN Ji-chuan WANG Yi-nan GUAN Li-qian ZHANG Min Department of Otolaryngology-Head and Neck Surgery Daping Hospital Institute of Surgery ResearchThird Military Medical UniversityChongqing 400042China

Objective To study the role of diuretic agents in treating sudden deafness (SD) and explore the possibility of endolymphatic hydrops as a potential cause of SD. Methods Twenty-eight SD cases were reviewed. In 23 cases, treatment was initiated with routine agents. Diuretic agents were later added in 8 of these cases that failed to respond to routine treatment agents. Diuretic agents were included in the initial treatment in the rest 5 cases. In total, 13 cases received diuretics in addition to routine treatment agents and 15 cases received conventional treatment only. Results In the 8 cases who received diuretics after failed conventional treatments, 4 showed hearing improvement, whereas all 5 cases in which diuretics were included in the initial treatment demonstrated hearing improvement. Conclusion These results suggest a possible role of endolymphatic hydrops in the pathophysiologic course of SD. Diuretics should be considered when clear indications exist with no conflicts to other medical conditions.

关键词： sudden deafness Endolymphatic hydrops Diuretics

Electrode/Electrolyte Optimization‑Induced Double‑Layered Architecture for High‑Performance Aqueous Zinc‑(Dual)Halogen Batteries

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Nano-Micro Letters 2025年第3期17卷 121-137页

作者： Chengwang zhou Zhezheng ding Shengzhe Ying Hao Jiang Yan Wang Timing Fang You Zhang Bing Sun Xiao Tang Xiaomin Liu School of Textiles and Clothing School of Chemistry and Chemical EngineeringQingdao UniversityQingdao 266071ShandongPeople’s Republic of China Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyUltimoNSW 2007Australia School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007HenanPeople’s Republic of China

Aqueous zinc-halogen batteries are promising candidates for large-scale energy storage due to their abundant resources,intrinsic safety,and high theoretical ***,the uncontrollable zinc dendrite growth and spontaneous shuttle effect of active species have prohibited their practical ***,a double-layered protective film based on zinc-ethylenediamine tetramethylene phosphonic acid(ZEA)artificial film and ZnF2-rich solid electrolyte interphase(SEI)layer has been successfully fabricated on the zinc metal anode via electrode/electrolyte synergistic *** ZEA-based artificial film shows strong affinity for the ZnF2-rich SEI layer,therefore effectively suppressing the SEI breakage and facilitating the construction of double-layered protective film on the zinc metal *** double-layered architecture not only modulates Zn2+flux and suppresses the zinc dendrite growth,but also blocks the direct contact between the metal anode and electrolyte,thus mitigating the corrosion from the active *** employing optimized metal anodes and electrolytes,the as-developed zinc-(dual)halogen batteries present high areal capacity and satisfactory cycling *** work provides a new avenue for developing aqueous zinc-(dual)halogen batteries.

关键词： Zn metal anodes Double-layered protective film Electrode/electrolyte optimization Aqueous zinc-(dual)halogen batteries

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液体晃动力学参数的辨识

清华大学学报（自然科学版） 1989年第5期29卷 96-102页

作者：丁文镜周叮工程力学系

提出一种确定液体晃动力学参数的新方法。建立晃动液体和运动容器的力学模型和它的差分方程，实测液体晃动时充液容器运动的信号，采用广义最小二乘法处理试验数据，估计出液体晃动的力学参数。用此种辨识方法获得的液体晃动的主频率和... 详细信息

提出一种确定液体晃动力学参数的新方法。建立晃动液体和运动容器的力学模型和它的差分方程，实测液体晃动时充液容器运动的信号，采用广义最小二乘法处理试验数据，估计出液体晃动的力学参数。用此种辨识方法获得的液体晃动的主频率和参预基频晃动液体的等效质量与理论计算和共振试验法得到的结果基本一致。

关键词：液体晃动力学参数辨识流体力学

The Union of the East and West via Music Culture

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海外英语 2015年第4期 240-241页

作者：周鼎宇绵阳师范学院外国语学院

It is universally acknowledged that cultural diversity can be showed in various aspects, and it take the music culture for example here. As the UN Sec-Gen Ban Ki Moon said:"there are no languages required in the musical world, That is the power of *** is the power of heart."Through this promotion of arts we can better understand the culture and civilization of other people.

关键词： music culture union in the east and west

Focus on Forms and Focus on Form in Grammar Instruction

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海外英语 2016年第22期 226-228页

作者：丁红州宿迁中学

Recently, debates on grammar instruction has been revolving around whether to focus on form, forms, or meaning. Focus on form and focus on forms have been defined and differentiated by many SLA researchers. A body of research has been conducted to investigate and compare the effectiveness of the three methodological options. The choice among the three will directly determine methodological options of language instructors. This paper is aimed at providing an annotated bibliography of recent papers on the research into focus on form and focus on from. It is hoped that this paper will be of some value to language researchers in this field and English teachers alike.

关键词： focus on form focus on forms grammar instruction