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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun yi Yao Liu yi huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Oxygen evolution reaction

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深度学习背景下高中英语读后续写教学实践与探索

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英语教师 2025年第1期 24-26,40页

作者：黄奕南京航空航天大学外国语学院江苏南京211521 江苏省溧阳市光华高级中学江苏常州213399

介绍深度学习在高中英语读后续写教学中的优势,认为深度学习能起到促进实践、促进思考、促进理解等作用。阐述深度学习背景下高中英语读后续写教学要求,认为教师在读后续写教学中应注意连贯表达、思维引领和过程体验,以此提升读后续写... 详细信息

介绍深度学习在高中英语读后续写教学中的优势,认为深度学习能起到促进实践、促进思考、促进理解等作用。阐述深度学习背景下高中英语读后续写教学要求,认为教师在读后续写教学中应注意连贯表达、思维引领和过程体验,以此提升读后续写教学的有效性。结合教学实例,探索深度学习背景下高中英语读后续写教学策略,即阅读原文,深度理解原文内涵;设计构思,深度发散独创思维;生成初稿,深度展开优化讨论;润色提升,深度落实写作指导。

关键词：高中英语深度学习读后续写

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石家庄S波段和X波段双偏振雷达定量降水估测应用研究

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高原气象 2025年第1期44卷 253-264页

作者：黄兆楚印佳楠杨洋张晓瑞黄毅王梧熠崔毅李禧亮河北省人工影响天气中心河北石家庄050021 河北省气象装备中心河北石家庄050021 河北省气象与生态环境重点实验室河北石家庄050021 石家庄市气象局河北石家庄050081

基于石家庄S波段雷达和X波段雷达、雨滴谱仪观测资料以及地面雨量计数据,分析两种雷达的R(ZH)、R(ZH,ZDR)、R(KDP)和R(KDP,ZDR)四种定量降水估测方法。结果表明,利用雨滴谱仪数据计算出的雷达反射率因子与雷达实测具有较好的一致性,但... 详细信息

基于石家庄S波段雷达和X波段雷达、雨滴谱仪观测资料以及地面雨量计数据,分析两种雷达的R(ZH)、R(ZH,ZDR)、R(KDP)和R(KDP,ZDR)四种定量降水估测方法。结果表明,利用雨滴谱仪数据计算出的雷达反射率因子与雷达实测具有较好的一致性,但整体偏大5 dB;两种雷达使用R(KDP,ZDR)方法估测降水结果优于其他方法,使用偏振参量KDP能明显提高降雨估测结果,使用ZDR后,测雨公式较单参量提高不明显;使用R(KDP)和R(KDP,ZDR)方法,利用X波段雷达估测降水的准确度略高于S波段雷达,可提升约10%,利用高空间分辨率的X波段雷达可以提升城市降水估测的精确度。

关键词：双偏振雷达雨滴谱定量估测降水(QPE)

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Observability Analysis and Navigation Algorithm for Distributed Satellites System Using Relative Range Measurements

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Journal of Systems Science & Complexity 2018年第5期31卷 1206-1226页

作者： SU Qiya huang yi Beijing Institute of Remote Sensing Equipment Beijing 100854 China Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China School of Mathematical Sciences University of Chinese Academy of Sciences Beijing 100049 China

The problem of navigation for the distributed satellites system using relative range mea- surements is investigated. Firstly, observability for every participating satellites is analyzed based on the nonlinear Keplerian model containing J2 perturbation and the nonlinear measurements. It is proven that the minimum number of tracking satellites to assure the observability of the distributed satellites system is three. Additionally, the analysis shows that the J2 perturbation and the nonlinearity make little contribution to improve the observability for the navigation. Then, a quasi-consistent extended Kalman filter based navigation algorithm is proposed, which is quasi-consistent and can provide an on- line evaluation of the navigation precision. The simulation illustrates the feasibility and effectiveness of the proposed navigation algorithm for the distributed satellites system.

关键词： Distributed satellites system (DSS) navigation observability quasi-consistent extendedKalman filter (QCEKF) relative range.

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Tuning of Sampled-Data ADRC for Nonlinear Uncertain Systems

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Journal of Systems Science & Complexity 2016年第5期29卷 1187-1211页

作者： XUE Wenchao huang yi Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy of Sciences

This paper concerns with the parameters tuning of active disturbance rejection control(ADRC) for a class of nonlinear systems with sampling rate not fast enough. The theoretical results show the quantitative relationship between the sampling rate, the parameters of ADRC, the size of uncertainties in system and the properties of the closed-loop system. Furthermore, the capability of the sampled-data ADRC under given sampling rate is quantitatively discussed.

关键词： Active disturbance rejection control (ADRC) extended state observer nonlinear uncertain systems parameters tuning sampled-data control.

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ADRC BASED INPUT DISTURBANCE REJECTION FOR MINIMUM-PHASE PLANTS WITH UNKNOWN ORDERS AND/OR UNCERTAIN RELATIVE DEGREES

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Journal of Systems Science & Complexity 2012年第4期25卷 625-640页

作者： Chunzhe ZHAO yi huang School of Computer Science and Engineering Chongqing Three Gorges University Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of Sciences

The capability of ADRC is studied for linear time-invariant SISO minimum-phase systems with unknown orders, uncertain relative degrees, and unknown input disturbances. It is proved that ADRC can reject the unknown input disturbance and guarantee the close-loop stability for the plants with unknown but bounded relative degrees. Meanwhile, some close-loop performances can be achieved. The influence of the sensor noise is also discussed. And it is demonstrated by numerical examples that one ADRC with fixed parameters can be applied to a group of plants of different orders, relative degrees, and parameters.

关键词： ADRC frequency performance sensor noise uncertain relative degree unknown input disturbance unknown order.

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有氧运动调节转化生长因子β/Smad通路缓解db/db糖尿病小鼠的肝脏纤维化

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中国组织工程研究 2025年第14期29卷 2951-2957页

作者：黄朝露黄毅吴昌燕李芳菲李海燕黔东南民族职业技术学院临床医学系贵州省凯里市556000 贵州医科大学基础医学院贵州省贵阳市550000 贵州中医药大学基础医学院贵州省贵阳市550000 温州医科大学附属第一医院康复科浙江省温州市325000

背景:有氧运动可抑制糖尿病小鼠肝纤维化,但具体作用机制尚未阐明。目的:基于转化生长因子β/Smad信号通路探讨有氧运动改善db/db小鼠肝纤维化的作用机制。方法:将8周龄雄性db/db小鼠和年龄匹配的m/m小鼠随机分为m/m对照组、m/m+运动组... 详细信息

背景:有氧运动可抑制糖尿病小鼠肝纤维化,但具体作用机制尚未阐明。目的:基于转化生长因子β/Smad信号通路探讨有氧运动改善db/db小鼠肝纤维化的作用机制。方法:将8周龄雄性db/db小鼠和年龄匹配的m/m小鼠随机分为m/m对照组、m/m+运动组、db/db对照组、db/db+运动组,每组10只,运动组小鼠接受12周有氧运动。运动结束后检测各组小鼠空腹血糖,进行葡萄糖耐量测试和胰岛素耐量测试;摘取肝脏计算肝脏指数,摘眼球取血检测生化指标;苏木精-伊红染色、油红O染色和Masson染色观察小鼠肝组织的病理变化,免疫组化检测肝组织中转化生长因子β1、p-Smad3的表达;Western blot检测肝组织中转化生长因子β1、Smad3、p-Smad3、α-平滑肌肌动蛋白、Ⅰ型胶原蛋白和Ⅲ型胶原蛋白表达水平。结果与结论:①与m/m组和m/m+运动组小鼠相比,db/db组小鼠体质量、肝质量、肝脏指数、空腹血糖、三酰甘油、总胆固醇、低密度脂蛋白和肌酶水平均显著升高(P<0.01);高密度脂蛋白水平显著降低(P<0.01);转化生长因子β1、p-Smad3、α-平滑肌肌动蛋白、Ⅰ型胶原蛋白和Ⅲ型胶原蛋白表达水平显著升高(P<0.01);葡萄糖、胰岛素耐量测试的曲线下面积显著增加(P<0.01);肝组织病理染色显示大量炎症细胞浸润,脂滴增多,明显纤维化;②与db/db组相比,db/db+运动组小鼠体质量、肝质量、肝脏指数、空腹血糖、三酰甘油、总胆固醇、低密度脂蛋白和肌酶水平显著降低(P<0.05或P<0.01);高密度脂蛋白水平显著升高(P<0.05);转化生长因子β1、p-Smad3、α-平滑肌肌动蛋白、Ⅰ型胶原蛋白和Ⅲ型胶原蛋白表达显著降低(P<0.05或P<0.01);此外,糖耐量、胰岛素耐量测试的曲线下面积明显减少(P<0.01,P<0.05),肝脏病理损伤得到明显改善;③结果表明,有氧运动有效减轻了糖尿病小鼠肝纤维化,其机制可能与调控转化生长因子β/Smad信号通路有关。

关键词：有氧运动转化生长因子β Smad 信号通路 db/db 肝纤维化

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Modulating the electrode–electrolyte interface enables switchable selectivity in electrocatalytic furfural reduction

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Science China Chemistry 2024年第10期67卷 3193-3194页

作者： Jingfang Zhang yi huang Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education School of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205China College of Chemistry Central China Normal UniversityWuhan 430079China

Furfural(FF),an important bio-based platform molecule,can be valorized to high-value-added chemicals(e.g.,furfuryl alcohol(FA)or 2-methylfuran(MF))through catalytic hydrogenation[1].The traditional thermocatalytic transformation of FF always requires high-temperature and highpressure conditions[2].Accordingly,electrocatalytic hydrogenation is emerging as a promising approach for the selective reduction of FF to FA or MF under environmentally friendly and benign conditions.

关键词： hydrogenation electrolyte selectivity

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Quantitative analysis on the phase margin of ADRC

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Control Theory and Technology 2023年第1期21卷 4-15页

作者： Sheng Zhong yi huang Beijing Aerospace Automatic Control Institute Beijing100854China Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing100049China

The paper analyzes and compares the phase margins of four active disturbance rejection control(ADRC)designs,which are based on different common-used extended state observers(ESOs)of various orders,for second-order *** quantitative results indicate that,besides good dynamic response,ADRC can guarantee enough phase *** is also proved that by decreasing the order of ESO,the phase margin can be ***,it is demonstrated that the phase margins of the ADRC-based systems can be almost uninfluenced by the uncertainties of the system ***,the theoretical results are verified by both simulations and experiments on a motion control platform.

关键词： Uncertain system Active disturbance rejection control(ADRC) Extended state observer(ESO) Phase margin Crossover frequency

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Parametric Study on the Behavior of An Innovative Subsurface Tension Leg Platform in Ultra-Deep Water

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China Ocean Engineering 2017年第5期31卷 589-597页

作者： ZHEN Xing-wei huang yi School of Naval Architecture and Ocean Engineering Dalian University of Technology

This study focuses on a new technology of Subsurface Tension Leg Platform （STLP）, which utilizes the shallow- water rated well completion equipment and technology for the development of large oil and gas fields in ultra-deep water （UDW）. Thus, the STLP concept offers attractive advantages over conventional field development concepts. STLP is basically a pre-installed Subsurface Sea-star Platform （SSP）, which supports rigid risers and shallow-water rated well completion equipment. The paper details the results of the parametric study on the behavior of STLP at a water depth of 3000 m. At first, a general description of the STLP configuration and working principle is introduced. Then, the numerical models for the global analysis of the STLP in waves and current are presented. After that, extensive parametric studies are carried out with regarding to SSP/tethers system analysis, global dynamic analysis and riser interference analysis. Critical points are addressed on the mooring pattern and riser arrangement under the influence of ocean current, to ensure that the requirements on SSP stability and riser interference are well satisfied. Finally, conclusions and discussions are made. The results indicate that STLP is a competitive well and riser solution in up to 3000 m water depth for offshore petroleum production.

关键词： subsurface tension leg platform parametric study global behavior ultra-deep water

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