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Assessment of runoff changes in the sub-basin of the upper reaches of the Yangtze River basin, China based on multiple methods

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Journal of Arid Land 2024年第4期16卷 461-482页

作者： wang xingbo ZHANG Shuanghu TIAN Yiman Department of Water Resources China Institute of Water Resources and Hydropower ResearchBeijing 100038China College of Hydrology and Water Resources Hohai UniversityNanjing 210098China

Quantitative assessment of the impact of climate variability and human activities on runoff plays a pivotal role in water resource management and maintaining ecosystem *** study considered six sub-basins in the upper reaches of the Yangtze River basin,China,to reveal the trend of the runoff evolution and clarify the driving factors of the changes during 1956–*** regression,Mann-Kendall test,and sliding t-test were used to study the trend of the hydrometeorological elements,while cumulative distance level and ordered clustering methods were applied to identify mutation *** contributions of climate change and human disturbance to runoff changes were quantitatively assessed using three methods,i.e.,the rainfall-runoff relationship method,slope variation method,and variable infiltration capacity(Budyko)hypothesis ***,the availability and stability of the three methods were *** results showed that the runoff in the upper reaches of the Yangtze River basin exhibited a decreasing trend from 1956 to 2020,with an abrupt change in *** attribution analysis,the runoff series could be divided into two phases,i.e.,1961–1985(baseline period)and 1986–2020(changing period);and it was found that the rainfall-runoff relationship method with precipitation as the representative of climate factors had limited usability compared with the other two methods,while the slope variation and Budyko hypothesis methods had highly consistent *** factors showed different effects in the sub-basins of the upper reaches of the Yangtze River ***,human disturbance was the main factor that contributed to the runoff changes,accounting for 53.0%–82.0%;and the contribution of climate factors to the runoff change was 17.0%–47.0%,making it the secondary factor,in which precipitation was the most representative climate *** results provide insights into how climate and anthropogenic changes synergistically influence the runoff of t

关键词： economic belt runoff change influencing assessment climate human activities

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二氧化碳捕集-转化一体化技术研究进展

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科学通报 2024年第8期69卷 1012-1024页

作者：胡登王星博陈新庆孙楠楠魏伟中国科学院上海高等研究院二氧化碳光子科学建制化研究中心上海201210 中国科学院上海高等研究院中国科学院低碳转化科学与工程重点实验室上海201210

CO_(2)捕集利用与封存(CO_(2)capture,utilization,and storage,CCUS)是一项新兴的、可实现传统化石能源大规模低碳利用的重要技术.然而,传统的CCUS技术成本过高,极大阻碍了其推广和应用.CO_(2)捕集-转化一体化技术是一种在CCUS自身框... 详细信息

CO_(2)捕集利用与封存(CO_(2)capture,utilization,and storage,CCUS)是一项新兴的、可实现传统化石能源大规模低碳利用的重要技术.然而,传统的CCUS技术成本过高,极大阻碍了其推广和应用.CO_(2)捕集-转化一体化技术是一种在CCUS自身框架内发展出的集成型CCUS技术.在该过程中,排放源的CO_(2)被吸收剂或吸附剂捕集后,无须经过高能耗的解吸过程而直接与共反应物进行反应,转化为下游产品,从而有望大幅降低减排成本,是一种全新的高效、低能耗CO_(2)减排技术.本文以CO_(2)捕集-转化一体化技术制备不同产品为出发点,从技术方案、材料构建、反应机理等方面进行综述,分析了一体化技术制备不同产品的研究现状和现存问题,探讨了该类技术的发展趋势.

关键词：碳中和碳捕集碳转化一体化

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Collaborative target tracking in WSNs using the combination of maximum likelihood estimation and Kalman filtering

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控制理论与应用（英文版） 2013年第1期11卷 27-34页

作者： xingbo wang Huanshui ZHANG Minyue FU School of Control Science and Engineering Shandong University School of Electrical Engineering and Computer Science University of Newcastle

Target tracking using wireless sensor networks requires efficient collaboration among sensors to tradeoff between energy consumption and tracking accuracy. This paper presents a collaborative target tracking approach in wire- less sensor networks using the combination of maximum likelihood estimation and the Kalman filter. The cluster leader converts the received nonlinear distance measurements into linear observation model and approximates the covariance of the converted measurement noise using maximum likelihood estimation, then applies Kalman filter to recursively update the target state estimate using the converted measurements. Finally, a measure based on the Fisher information matrix of maximum likelihood estimation is used by the leader to select the most informative sensors as a new tracking cluster for further tracking. The advantages of the proposed collaborative tracking approach are demonstrated via simulation results.

关键词： Target tracking Wireless sensor network Maximum likelihood estimation Kalman filtering Fisher information matrix Sensor selection

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氨燃料经济分析及煤掺氨燃烧试验研究

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东方电气评论 2024年第4期38卷 41-46页

作者：韦耿赵硕王星博王勇汪鑫东方电气集团东方锅炉股份有限公司清洁燃烧与烟气净化四川省重点试验室成都611731 上海交通大学机械与动力工程学院上海200240

目前,世界各国对温室气体的排放愈加关注。在我国“双碳”的背景下,对低碳或无碳燃料的充分利用势在必行。氨作为基本化工的无碳原料,产量大,具有易液化、易长期存储、易长距运输、零碳排放等特点。煤掺氨燃烧可以减少燃煤锅炉CO_(2)的... 详细信息

目前,世界各国对温室气体的排放愈加关注。在我国“双碳”的背景下,对低碳或无碳燃料的充分利用势在必行。氨作为基本化工的无碳原料,产量大,具有易液化、易长期存储、易长距运输、零碳排放等特点。煤掺氨燃烧可以减少燃煤锅炉CO_(2)的排放,在碳中和背景下,氨将成为氢能利用的一种重要氢基燃料。西部大型综合风光能源基地会产生不稳定电源,随之存在大量的弃风、弃光,故可将其用于氨燃料的生产。本文对氨燃料的生产成本进行经济性分析,后对锅炉煤掺氨燃烧技术进行分析。研究发现绿氨的生产成本主要受到电价的影响,当电价降到0.1元/kW·h以下,可用其代替天然气;当煤与氨混合燃烧时,氨煤的混合比例和不同的分级水平会影响NO_(x)的排放。在空气不分级燃烧条件下,当氨混合比增加时,NO_(x)排放减少。在空气分级燃烧条件下,可以发现尾气NO_(x)排放量随着NH3混合比的增加而增加,但NH3的增加对NO_(x)排放量增加的影响随着燃尽空气位置比的增加逐渐消失。

关键词：氨燃料经济性分析氨煤混燃 NO_(x)排放

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Target tracking based on the extended H-infinity filter in wireless sensor networks

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控制理论与应用（英文版） 2011年第4期9卷 479-486页

作者： xingbo wang Huanshui ZHANG Xiangyuan JIANG Yawei YANG School of Control Science and Engineering Shandong University Jinan Shandong 250061 China

In this paper, we propose a new target tracking approach for wireless sensor networks (WSNs) by using the extended H-infinity filter. First, the extended H-infinity filter for nonlinear discrete-time systems is deduced through the Krein space analysis scheme. Then, the proposed extended H-infinity filtering algorithm is applied to target tracking in wireless sensor networks. Finally, experiments are conducted through a small wireless sensor network test-bed. Both experimental and simulation results illustrate that the extended H-infinity filtering algorithm is more accurate to track a moving target in wireless sensor networks than using the extended Kalman filter in the case of having no knowledge of the statistics of the environment and the target to be tracked.

关键词：无线传感器网络目标跟踪方法无穷远过滤器非线性离散时间系统 Krein空间扩展卡尔曼滤波基础

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数控代码中的特征数据识别与处理技术研究及实现

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机电工程技术 2024年第1期53卷 140-144页

作者：韩孟轩鄢继红王兴波佛山科学技术学院机电工程系广东佛山528000 广州数控设备有限公司广州510530

针对现有插补文献均缺乏对G01数控小线段识别处理细节的问题,提出了一种识别特征的滑动窗口法及相应的算法,将数控代码识别成直线、圆弧和自由曲线。给出了基于型值点的3次、5次NURBS分段光滑插值衔接所需的一、二阶导矢计算方法,使得... 详细信息

针对现有插补文献均缺乏对G01数控小线段识别处理细节的问题,提出了一种识别特征的滑动窗口法及相应的算法,将数控代码识别成直线、圆弧和自由曲线。给出了基于型值点的3次、5次NURBS分段光滑插值衔接所需的一、二阶导矢计算方法,使得各个特征之间能够达到GC1和GC2连续。运用5次NURBS插值曲线对自由曲线进行建模较3次NURBS插值曲线具有更好的连续性。对“S”样件的仿真实验与加工均验证了算法的可行性。对CNC插补计算和提高加工质量有参考价值。

关键词：数控代码特征识别滑动窗口法 CNC插补光滑拼接

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ZIF-7@carbon composites as multifunctional interlayer for rapid and durable Li-S performance

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Journal of Energy Chemistry 2021年第6期30卷 19-27,I0002页

作者： xingbo wang Yan Zhao Feichao Wu Shuming Liu Zisheng Zhang Zhaoyang Tan Xiaohang Du Jingde Li Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving Tianjin Key Laboratory of Chemical Process SafetySchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300130China School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China Department of Chemical and Biological Engineering University of OttawaOttawaON K1N 6N5Canada

The notorious"shuttle effect"of polysulfide during charge-discharge process induces grievous capacity fading,while the sluggish polysulfide conversion kinetics significantly hinders the development of practically viable lithium-sulfur(Li-S)*** this study,a novel ZIF-7@carbon composite with ZIF-7 sheets vertically rooted on carbon cloth was developed as multifunctional interlayer to address these *** composite shows directional layered structure with outstanding compactness,and thus can provide massive active sites for accelerated redox *** pore channels are perpendicular to the square surface,resulting in extremely high utilization of one-dimensional ***,this structure can not only maintain the structural stability during the charge-discharge process by providing enough space for volume expansion,but also contribute to efficient exposure and utilization of active sites for the physical/chemical adsorption and catalytic conversion of *** a result,Li-S batteries with the as-developed interlayer deliver a considerable areal capacity of 4.75 mAh cm^(-2) at an elevated sulfur loading of 5.5 mg cm^(-2),and an impressive cyclability with an extremely low capacity-fading rate of merely 0.04%per cycle over 500 cycles at 1 C.

关键词： Lithium-sulfur batteries Interlayer ZIF-7 sheets High sulfur loading

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JIB-04通过调节M1型巨噬细胞极化抑制主动脉夹层发生

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中华实验外科杂志 2024年第3期41卷 523-525页

作者：王星博龚福汉蒋丁胜魏翔华中科技大学同济医学院附属同济医院心脏大血管外科武汉430030 铜仁市人民医院心血管内科铜仁554300

目的分析组蛋白去甲基酶抑制剂JIB-04对于小鼠骨髓来源巨噬细胞M1极化的影响,探究其与主动脉夹层发生之间的关系。方法提取小鼠骨髓来源巨噬细胞,诱导巨噬细胞M1分化,给予JIB-04药物干预,并通过流式细胞术检测M1型细胞极化率,实时荧光... 详细信息

目的分析组蛋白去甲基酶抑制剂JIB-04对于小鼠骨髓来源巨噬细胞M1极化的影响,探究其与主动脉夹层发生之间的关系。方法提取小鼠骨髓来源巨噬细胞,诱导巨噬细胞M1分化,给予JIB-04药物干预,并通过流式细胞术检测M1型细胞极化率,实时荧光定量聚合酶链反应(PCR)实验检测炎性标志物的RNA表达水平,蛋白质免疫印迹实验检测M1型巨噬细胞标志物的蛋白表达水平,两组间差异比较采用独立样本t检验。结果流式细胞实验显示JIB-04干预组的M1巨噬细胞阳性群比例为(21.90±0.65)%,脂多糖(LPS)刺激组为(35.81±0.49)%,药物干预组相较于LPS刺激组的阳性群比例差异有统计学意义(t=29.36,P<0.01);PCR实验结果显示LPS刺激组的M1型巨噬细胞的炎性标志物一氧化氮合酶(iNOS)相对RNA表达水平为170.60±5.92,药物干预组为38.21±3.41,JIB-04药物干预组的M1型巨噬细胞的炎性标志物低于LPS刺激组,差异有统计学意义(t=38.54,P<0.01),且其余炎性标志物结果同iNOS一致;蛋白免疫印迹实验结果显示LPS刺激组的iNOS的蛋白表达含量为3.51±0.94,药物干预组的iNOS表达含量为1.18±0.17,JIB-04药物干预组的iNOS蛋白表达含量低于LPS刺激组且差异有统计学意义(t=4.84,P<0.05)。结论JIB-04可以通过抑制巨噬细胞M1极化进而调控主动脉夹层的发生。

关键词：主动脉夹层 JIB-04 巨噬细胞极化

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Enhanced Electrochemical Performance of Ti-Doping Li1,15Ni0.47Sb0.38O2 as Lithium-excess Cathode for Lithium-ion Batteries

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Chinese Journal of Chemistry 2017年第12期35卷 1853-1860页

作者： Xiaozhi Su xingbo wang Haiping Chen Zhen Yu Jiaxin Qi Shi Tao wangsheng Chu Li Song National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230029 China Department of Physics and Electronic Engineering Jiangsu Lab of Advanced Functional Materials Changshu Institute of Technology Changshu Jiangsu 215500 China

Recent success and application of the percolation theory have highlighted cation-disordered Li-rich oxides as high energy density cathode materials. Generally, this kind of cathode materials suffer from low cycling stability and rate performance. Doped Ti4^＋ ions can improve the long-term cycling stability and rate performance of the Li-rich oxides materials with obvious capacity fading. The electrochemical performance in LixNi2-4x/3Sbx/3O2 can benefit a lot from the nanohighway, which is a kind of nanoscale 0-TM diffusion channels in the transition metal layer and provides low diffusion barrier pathways for the lithium diffusion. In this work, the doping effect of Ti on the structure and electrochemical properties in Li1.15Ni0.47Sb0.38O2 is studied. The Ti-stabilized Li1.15-xNi0.47TixSb0.38O2 （x=0, 0.01, 0.03 and 0.05） have been prepared by a solid-state method and the Li1.03Ni0.47Sb0.38Ti0.03O2 sample exhibits outstanding electrochemical performance with a larger reversible discharge capacity, better rate capability and cyclability. Synchrotron-based XANES, combined with ab initio calculations in the multiple-scattering flame- work, reveals the Ti ions have been doped into the Li-site in the lithium layer and formed a distortion TiO6 octahedron. This TiO6 local configuration in the lithium can keep the stability of nanohighway in the electrochemical pro- cess. In particular, the Lil.03Ni0.47Sb0.38Ti0.03O2 compound can deliver a discharge capacities 132 and 76 mAh/g at 0.2 and 5 C, respectivly. About 86% capacity retention occurs at 1 C rate after 500 cycles. This work suggests capacity fading in the oxide cathode materials can be suppressed to construct and stabilize the nanohighway.

关键词： cation-disordered oxides Ti-doped cathode synchrotron-based XANES lithium-ion batteries

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Some Inequalities on <i>T<sub>3</sub></i>Tree

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Advances in Pure Mathematics 2018年第8期8卷 711-719页

作者： xingbo wang Department of Mechatronic Engineering Foshan University Foshan China Guangdong Engineering Center of Information Security for Intelligent Manufacturing System Foshan China State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi China

The article proves several inequalities derived from nodal multiplication on T3 tree. The proved inequalities are helpful to estimate certain quantities related with the T3 tree as well as examples of proving an inequ... 详细信息

关键词： Inequality Floor Function Binary Tree

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