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Steric hindrance modulation of hexaazatribenzanthraquinone isomers for high-capacity and wide-temperature-range aqueous proton battery

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National Science Review 2024年第4期11卷 271-282页

作者： mingsheng Yang Yuxin Hao Bei Wang Yan Wang Liping Zheng Rui Li Huige Ma Xinyu Wang Xiaoming Jing Hongwei Li Mengxiao Li Zhihui Wang Yujie Dai Guangcun Shan Mingjun Hu Jun luo Jun Yang School of Materials Science and Engineering Beihang University Beijing Institute of Nanoenergy &Nanosystems Chinese Academy of Sciences Center on Nanoenergy Research School of Physical Science & TechnologyGuangxi University School of Chemistry and Chemical Engineering Center on Nanoenergy Research Guangxi University School of Instrumentation Science and Opto-electronics Engineering Beihang University ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of China

Organic materials with rich active sites are good candidates of high-capacity anodes in aqueous batteries,but commonly low utilization of active sites limits their capacity.Herein,two isomers,symmetric and asymmetric hexaazatribenzanthraquinone（s-HATBAQ and a-HATBAQ）,with rich active sites have been synthesized in a controllable manner.It has been revealed for the first time that a sulfuric acid catalyst can facilitate the stereoselective formation of s-HATBAQ.Attributed to the reduced steric hindrance in favor of proton insertion as well as the amorphous structure conducive to electrochemical dynamics,s-HATBAQ exhibits 1.5 times larger specific capacity than a-HATBAQ.Consequently,the electrode of s-HATBAQ with50% reduced graphene oxide（s-HATBAQ-50%rGO） delivers a record high specific capacity of405 mAh g-1in H2SO4electrolyte.Moreover,the assembled MnO2//s-HATBAQ-50%rGO aqueous proton full batteries show an exceptional cycling stability at 25℃ and can maintain ～92% capacity after1000 cycles at 0.5 A g-1at-80℃.This work demonstrates the controllable synthesis of isomers,showcases a wide-temperature-range prototype proton battery and highlights the significance of precise mole cular structure modulation in organic energy storage.

关键词： stereoisomers steric effect aqueous battery super cycling stability ultra-low temperature proton battery

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A Model of Hydrothermal Dolomite Reservoir Facies in Precambrian Dolomite, Central Sichuan Basin, SW China and its Geochemical Characteristics

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Acta Geologica Sinica(English Edition) 2019年第1期93卷 130-145页

作者： GU Yifan ZHOU Lu JIANG Yuqiang JIANG Chan luo mingsheng ZHU Xun School of Geosciences & Technology Southwest Petroleum University Exploration Division PetroChina Southwest Oil & Gas Field Company Shunan Division of Petrochina Southwest Oil&Gas Field Company Exploration and Development Institute of Southwest Oil&Gas Field Company PetroChina

Hydrothermal mineral assemblages and related hydrothermally enhanced fracturing are common in the Precambrian Dengying Formation of Central Sichuan Basin. Petrographic and geochemical analyses of core samples show that the hydrothermal dolomite reservoirs of Dengying Formation consist of four main types of pores in the reservoir facies. These include: 1) hydrothermal dissolution vug(or pore), 2) intercrystalline pore, 3) residual inter-breccia vug(or pore), and 4) enlarged dissolved-fracture. There are three different fabrics dolomite in hydrothermal dolomite reservoirs, namely, saddle dolomite, fine-medium dolomite and micritic dolomite. Micritic dolomite is the original lithology of host rock. Saddle dolomite with curved or irregular crystal faces was directly crystallized from hydrothermal fluids(average temperature 192°C). Fine-medium dolomites are the products of recrystallization of micritic dolomite, resulting in abnormal geochemical characteristics, such as slight depletion of δ^(18)O, significant enrichment of Mn-Fe and ^(87)Sr/^(86)Sr, and positive Eu anomaly. A model for the distribution of various hydrothermal dolomite reservoir facies is proposed here, which incorporates three fundamental geological controls: 1) extensional tectonics and tectono-hydrothermal events(i.e., the Xingkai Taphrogenesis of Late Sinian-Early Cambrian, and Emei Taphrogenesis of Late Permian), 2) hydrothermal fluid storage in clastic rocks with large thickness(e.g., Nanhua System of Chengjiang Formation and part of Doushantuo Formation), and 3) confining bed for hydrothermal fluids(such as, the shale in Qiongzhusi Formation). The supply of hydrothermal fluid is critical. Large basement-rooted faults and associated grid-like fracture system may function as the channels for upward migration of hydrothermal fluid flow. The intersection of the above-mentioned faults(including the conversion fault), especially transtensional sags above negative flower structures on wrench faults can serve as a key target for future hydrocarbon expl

关键词： hydrothermal dolomite reservoir facies geochemical characteristics Precambrian Dengying Formation central Sichuan Basin

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锂离子电容器负极材料的研究进展

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电池 2024年第1期54卷 107-110页

作者：马嘉玲宋焕巧何志宏罗明生北京石油化工学院新材料与化工学院北京102617 燃料清洁化及高效催化减排技术北京市重点实验室北京102617

锂离子电容器是弥补锂离子电池和超级电容器缺陷的选择之一。锂离子电容器由电容型正极和电池型负极组成,但电池型负极材料较差的倍率性能和循环稳定性导致与电容型正极材料性能不匹配,阻碍了其应用。对负极材料改性成为近年来的研究热... 详细信息

锂离子电容器是弥补锂离子电池和超级电容器缺陷的选择之一。锂离子电容器由电容型正极和电池型负极组成,但电池型负极材料较差的倍率性能和循环稳定性导致与电容型正极材料性能不匹配,阻碍了其应用。对负极材料改性成为近年来的研究热点。介绍锂离子电容器的工作原理,讨论锂离子电容器对负极材料的要求及转化型、合金型和插层型等3种负极材料的发展现状,对未来锂离子电容器负极材料进行展望。

关键词：比容量能量密度功率密度循环稳定性负极材料锂离子电容器

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基于蓝牙无线传输技术的液压导管应变测量系统

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传动技术 2024年第1期38卷 18-22页

作者：李泽函骆政波韩铭晟何清波上海交通大学机械与动力工程学院上海200240 国营芜湖机械厂安徽芜湖214007

液压导管应变检测是保证液压系统安全可靠运行和判断系统结构健康状况的关键,针对有线应变测试设备存在的问题,设计了一套基于蓝牙无线传输技术的应变测量系统。系统设计遵循体积小、低功耗的原则,基于蓝牙低功耗、高信号质量的无线传... 详细信息

液压导管应变检测是保证液压系统安全可靠运行和判断系统结构健康状况的关键,针对有线应变测试设备存在的问题,设计了一套基于蓝牙无线传输技术的应变测量系统。系统设计遵循体积小、低功耗的原则,基于蓝牙低功耗、高信号质量的无线传输技术,根据一主多从模式架构设计了主从机电路,设计完成液压导管应变采集和无线通信等功能需求,另外设计配套数据传输与处理软件,在交互界面实现数据实时显示与分析。通过有线采集设备与无线测量系统的应变测量对比实验,证明本文设计的基于蓝牙无线传输技术的应变测量系统能够准确有效测得液压导管应变。

关键词：液压导管应变测量蓝牙电路设计

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基于CONSORT和STRICTA评价针刺治疗慢性阻塞性肺疾病随机对照试验质量的研究

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成都中医药大学学报 2024年第3期47卷 74-80页

作者：李茜罗钦余欣陈明孙铭声余曙光杨莎成都中医药大学针灸推拿学院四川成都610072 攀枝花学院四川攀枝花617000 四川省针灸临床医学研究中心四川成都610072 成都中医药大学针灸脑科学研究中心四川成都610072

目的:采用Cochrane协作网RCT偏倚风险评价工具(RoB2)、临床试验报告统一标准(CONSORT)和针刺临床试验干预措施报告标准(STRICTA)评价针刺治疗慢性阻塞性肺疾病(Chronic Obstructive Pulmonary Disease,COPD)随机对照试验的质量,为提高... 详细信息

目的:采用Cochrane协作网RCT偏倚风险评价工具(RoB2)、临床试验报告统一标准(CONSORT)和针刺临床试验干预措施报告标准(STRICTA)评价针刺治疗慢性阻塞性肺疾病(Chronic Obstructive Pulmonary Disease,COPD)随机对照试验的质量,为提高临床证据质量提供参考。方法:计算机检索中国知网(CNKI)、维普中文期刊服务平台(VIP)、万方数据知识服务平台(WanFang)、中国生物医学文献数据库(CBM)以及PubMed、Cochrane Library、EmBase收录的关于针刺治疗COPD的随机对照试验,检索时限从建库开始到2022年2月28日。应用RoB2、CONSORT和STRICTA对纳入文献的方法学和报告质量进行评价,评价结果的一致性用kappa值表示。结果:最终纳入文献51篇,其中风险偏倚为“低风险”的3篇(5.9%),“不确定”的26篇(51.0%),“高风险”的22篇(43.1%)。根据CONSORT和STRICTA评价结果,报告率较高的条目有“研究目的和假设”“结局指标结果”“针刺穴位”等,报告率较低的条目有“随机”“盲法”“样本量的估算”“临床注册”以及“治疗师背景”“针刺细节”等。没有文献完全符合CONSORT声明和STRICTA清单。评价的一致性较好。结论:目前针刺治疗COPD随机对照试验的偏倚风险较高,报告质量整体较低,需要按照CONSORT和STRICTA进一步完善,以提高临床证据质量,使其更好的服务于临床。

关键词：慢性阻塞性肺疾病针刺 CONSORT标准 STRICTA标准

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Insights into the stable and fast lithium storage performance of oxygen-deficient LiV_(3)O_(8) nanosheets

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Nano Research 2021年第3期14卷 814-822页

作者： Huanqiao Song Feng Liu mingsheng luo Department of Chemical Engineering Beijing Institute of Petrochemical TechnologyBeijing102617China Beijing Key Laboratory of Clean Fuels and Efficient Catalytic Emission Reduction Technology Beijing102617China

Oxygen-deficient LiV_(3)O_(8) is considered as one of the promising cathode materials for lithium ion batteries(LIBs)because of its high cycling stability and rate capability.However,it is very difficult to control and study the content and position of V^(4+)and oxygen vacancies in LiV_(3)O_(8),and therefore the mechanism of improving electrochemical performance of LiV_(3)O_(8) is still unclear.Herein,we developed four LiV_(3)O_(8) nanosheets with different V^(4+)and oxygen vacancy contents and positions.The physicochemical and lithium storage properties indicate that the V^(4+)and oxygen vacancies in the surface layer increase the contribution of pseudocapacitive lithium storage on the nanosheet surface.The V^(4+)and oxygen vacancies in the lattice improve the electrical conductivity of LiV_(3)O_(8),and enhance the phase transformation and lithium ion diffusion rates.By adjusting the content of V^(4+)and oxygen vacancies,we obtained an oxygen-deficient LiV_(3)O_(8) nanosheet which maintained more than 93%of the initial reversible capacity after 300 cycles at 5,000 mA·g^(−1).The V^(4+)and oxygen vacancies play an important role in improving the stability and rapidity of lithium storage.This work is helpful to understand the stable and fast lithium storage mechanism of oxygen-deficient LiV_(3)O_(8),and might lay a foundation for further studies of other oxygen-deficient metal oxide electrodes for long-life and high-power LIBs.

关键词： oxygen-deficient LiV_(3)O_(8) fast lithium storage high stability tetravalent vanadium ion oxygen vacancy

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Randomized Latent Factor Model for High-dimensional and Sparse Matrices from Industrial Applications

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 131-141页

作者： mingsheng Shang Xin luo Zhigang Liu Jia Chen Ye Yuan MengChu Zhou the Chongqing Engineering Research Center of Big Data Application for Smart Cities and Chongqing Key Laboratory of Big Data and Intelligent ComputingChongqing Institute of Green and Intelligent TechnologyChinese Academy of Sciences the School of Computer Science and Engineering Beihang University the Department of Electrical and Computer Engineering New Jersey Institute of Technology

Latent factor(LF) models are highly effective in extracting useful knowledge from High-Dimensional and Sparse(HiDS) matrices which are commonly seen in various industrial applications. An LF model usually adopts iterative optimizers,which may consume many iterations to achieve a local optima,resulting in considerable time cost. Hence, determining how to accelerate the training process for LF models has become a significant issue. To address this, this work proposes a randomized latent factor(RLF) model. It incorporates the principle of randomized learning techniques from neural networks into the LF analysis of HiDS matrices, thereby greatly alleviating computational burden. It also extends a standard learning process for randomized neural networks in context of LF analysis to make the resulting model represent an HiDS matrix correctly.Experimental results on three HiDS matrices from industrial applications demonstrate that compared with state-of-the-art LF models, RLF is able to achieve significantly higher computational efficiency and comparable prediction accuracy for missing data.I provides an important alternative approach to LF analysis of HiDS matrices, which is especially desired for industrial applications demanding highly efficient models.

关键词： Big data high-dimensional and sparse matrix latent factor analysis latent factor model randomized learning

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垃圾秸秆焚烧炉应用现状及发展建议

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现代农业科技 2024年第8期 88-91页

作者：罗朝阳罗吉李林王明昇何成奎高新随顺涛李光辉万先起蒋金巧谭杰达州职业技术学院四川达州635001 四川省农业机械科学研究院四川成都610066

随着城市化进程的加快和人们生产生活水平的提高,垃圾秸秆的处理与利用问题日益突出。垃圾秸秆焚烧炉具有可回收能源、环境友好等优点,开发和应用垃圾秸秆焚烧炉是解决垃圾秸秆问题的重要途径。基于此,本文介绍了垃圾秸秆焚烧炉的基本... 详细信息

随着城市化进程的加快和人们生产生活水平的提高,垃圾秸秆的处理与利用问题日益突出。垃圾秸秆焚烧炉具有可回收能源、环境友好等优点,开发和应用垃圾秸秆焚烧炉是解决垃圾秸秆问题的重要途径。基于此,本文介绍了垃圾秸秆焚烧炉的基本原理与分类,深入分析了垃圾秸秆焚烧炉的应用现状,并针对目前存在的技术滞后、废气处理难度大、投资周期长、国际合作欠缺等问题,提出了促进技术研发与创新、强化环境管理和减排、加强政府支持与政策引导、加强跨国合作与学习交流等发展建议,以期为促进垃圾秸秆资源化利用,降低生态环境污染,助力乡村振兴提供参考。

关键词：垃圾秸秆焚烧炉能源回收环境保护应用现状问题建议

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Anti-obesity effects of angiotensin converting enzyme inhibitor are mediated by brown adipose tissue activation

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Science Bulletin 2018年第5期63卷 275-277页

作者： Baiqiang Zhai Huiqiao Zhou Li Chen Wanru Qiu mingsheng Yang Yunbo luo Xaomeng Liu Laboratory of Food Safety College of Food Science and Nutritional Engineering China Agricultural University Beijing 100083 China The Supervision Inspection & Testing Center of Genetically Modified Food Safety Ministry of Agriculture Beijing 100083 Chino Beijing Advanced Innovation Center for Food Nutrition and Human Health College of Food Science and Nutritional Engineering China Agricultural University Beijing 100083 China Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing 10010 I China The University of the Chinese Academy of Sciences Beijing 100049 China Institute of Neuroscience and Translational Medicine College of Life Science and Agronomy Zhoukou Normal University Zhoukou 466001 China

Obesity is characterized with the disorder of energy metabolismwhich often causes various complications such as insulin resis-tance and type 2 diabetes. A recent estimate performed by WorldHealth Organization （WHO） in 2014 showed that up to 0.6 billionindividuals had suffered from obesity, indicating that the drugscreening against obesity is quite crucial. In mammals, there aretwo types of adipose tissues.

关键词：中国科学通报英文版

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The effect of SiO_2 particle size on iron based F–T synthesis catalysts

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Chinese Journal of Chemical Engineering 2016年第7期24卷 937-943页

作者： Xiuying Guo Yijun Lu Peng Wu Kui Zhang Qinghua Liu mingsheng luo National Institute of Clean and Low Carbon Energy Beijing 102209 China

The effect of particle size of silica, as catalyst binder, on the chemical and mechanical properties of iron based FT catalyst was studied in this work. The samples were characterized using XRD, BET, TEM, FT-IR, and H2-TPR, respectively. The attrition resistance and the FT activity were tested. Si-8–Si-15 catalysts prepared with 8–15 nm silica sol show good attrition resistance(attrition loss b 4%), especially Si-13 with an attrition loss of 1.89%. Hematite appeared in XRD patterns when silica sol above 15 nm is used. TEM micrographs show that no obvious Si O_2 particles appear when silica sol particle with size less than 8 nm was used, but Si O_2 particles coated with small ferrihydrite particles appear when silica sol above 8 nm was used. Si–O–Si vibration peak in FT-IR spectra increases with increasing silica sol size. Samples prepared with silica sol show good stability of FT reactions, and the average molecular weight of FT products increases with the increase of Si O_2 particle.

关键词： SiO2颗粒铁基催化剂颗粒尺寸合成催化剂二氧化硅粒子纳米硅溶胶催化剂制备 XRD图谱

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