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Precise robust motion control of cell puncture mechanism driven by piezoelectric actuators with fractional-order nonsingular terminal slidingmode control

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Bio-Design and Manufacturing 2020年第4期3卷 410-426页

作者： Shengdong Yu Hongtao Wu Mingyang Xie haiping Lin Jinyu Ma wenzhou Polytechnic Wenzhou 325000China Nanjing University of Aeronautics and Astronautics Nanjing 210016China Hangzhou Vocational and Technical College Hangzhou 310000China

A novel robust controller is proposed in this study to realize the precise motion control of a cell puncture mechanism(CPM)driven by piezoelectric ceramics(PEAs).The entire dynamic model of CPM is constructed based on the Bouc–wen model,and the nonlinear part of the dynamic model is optimized locally to facilitate the construction of a robust controller.A model-based,nonlinear robust controller is constructed using time-delay estimation(TDE)and fractional-order nonsingular terminal sliding mode(FONTSM).The proposed controller does not require prior knowledge of unknown disturbances due to its real-time online estimation and compensation of unknown terms by using the TDE *** controller also has finite-time convergence and high-precision trajectory tracking capabilities due to FONTSM manifold and fast terminal sliding mode-type reaching *** stability of the closed-loop system is proved by Lyapunov stability *** simulation and hardware-in-loop simulation experiments of CPM verify that the proposed controller outperforms traditional terminal sliding mode controllers,such as the integer-order or model-free *** proposed controller can also continuously output without chattering and has high control *** embryo is used as a verification target to complete the cell puncture *** the engineering application perspective,the proposed control strategy can be effectively applied in a PEA-driven CPM.

关键词： Cell puncture mechanism(CPM) Piezoelectric actuator(PEA) Robust motion control Fractional-order nonsingular terminal sliding mode(FONTSM) Time-delay estimation(TDE)

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Alternative photothermal/electrothermal hierarchical membrane for hypersaline water treatment

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SusMat 2022年第6期2卷 679-688页

作者： Miao Wang wen He Yuhui Hua Xinwen Xie Shiyan Chen Lei Zhou Yunmao Zhang Yaqi Hou Shihong Lin haiping Xia Jing Zheng Xu Hou State Key Laboratory of Physical Chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamenChina College of Materials Xiamen UniversityXiamenChina Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamenChina Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis Department of ChemistrySouthern University of Science and TechnologyShenzhenChina Collaborative Innovation Center of Chemistry for Energy Materials(iChEM) Xiamen UniversityXiamenChina Department of Civil and Environmental Engineering Vanderbilt UniversityNashvilleTennesseeUSA Interdisciplinary Material Science Program Vanderbilt UniversityNashvilleTennesseeUSA Tan Kah Kee Innovation Laboratory Xiamen UniversityXiamenChina Engineering Research Center of Electrochemical Technologies of Ministry of Education Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamenChina

Over the last decades,the treatment of the large quantities of hypersaline wastewater generated by conventional industries,inland desalination,and fossil-fueled power plants has been an important economic issue and also an inescapable green ***,we developed a versatile interfacial heating membrane with alternating utilization of electricity or solar energy for hypersaline water *** hierarchical membrane functions both as a separation membrane and an interface heater,which can quickly(5 wt%),with a high salt rejection rate of 99.99%.This system shows an efficient desalination strategy that can provide fresh water from brines for agriculture and industry,and even for daily life.

关键词： carbon nanotubes electrothermal hypersaline water treatment interface evaporate pho-tothermal

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In Situ Formation of Frustrated Lewis Pairs in a Zirconium Metal-Organic Cage for Sustainable CO_(2)Chemical Fixation

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CCS Chemistry 2023年第9期5卷 1989-1998页

作者： Cheng-Xia Chen Hassan Rabaâ haiping Wang Pui Ching Lan Yang-Yang Xiong Zhang-wen Wei Abdullah M.Al-Enizi Ayman Nafady Shengqian Ma Department of Chemistry University of North TexasDentonTexas 76201 MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275 Department of Chemistry Ibn Tofail UniversityESCTM14000 Kenitra Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451

Sustainable CO_(2)fixation represents a facile and promising approach to constructing various valueadded ***,we contribute a robust metal-organic cage(MOC),denoted as TCPB-1,comprising a bulky Lewis acid functionalized linker,which can in situ form frustrated Lewis pairs(FLPs)upon the addition of Lewis basic substrates to efficiently drive CO_(2)***,the incorporation of Lewis acidic boron sites within TCPB-1 promotes the efficient CO_(2)conversion to potentially medicinal benzimidazole derivatives via an FLPmediated pathway,and boosts the stability/durability of the FLP *** addition,the underlying catalysis mechanism has been established by combined experimental and molecular simulation *** work not only advances FLP/MOC as a new type of highly efficient catalyst for CO_(2)chemical fixation,but also opens a new avenue to design heterogeneous FLP-based catalysts for small molecule activation and beyond.

关键词： metal-organic cage frustrated Lewis pair heterogeneous catalysis CO_(2)conversion sustainable chemistry

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Controlling the Coffee Ring Effect on Graphene and Polymer by Cations

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Chinese Physics Letters 2020年第2期37卷 78-81页

作者： Haijun Yang Yizhou Yang Shiqi Sheng Binghai wen Nan Sheng Xing Liu Rongzheng Wan Long Yan Zhengchi Hou Xiaoling Lei Guosheng Shi haiping Fang Shanghai Synchrotron Radiation Facility Zhangjiang Laboratory(SSRFZJLab)Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204 Shanghai Applied Radiation Institute and State Key Lab Advanced Special Steel Shanghai UniversityShanghai 200444 Guangxi Key Lab of Multisource Information Mining&Security Guangxi Normal UniversityGuilin 541004 Division of Interfacial Water CAS Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800 School of Science East China University of Science and TechnologyShanghai 200237

Recently,there are great efforts that have been taken to suppressing/controlling the coffee ring effect,but it is of challenge to achieve inexpensive and efficient control with less disturbance,suitable for scalable production and highly enhancing the printing/dyeing color *** only adding trace amounts of salt into the suspensions,here we experimentally achieve the facile and highly efficient control of the coffee ring effect of suspended matter on substrates of graphene,natural graphite,and polyethylene terephthalate ***,friction force measurements show that ion-controlled uniform patterns also greatly enhance color *** dynamics simulations reveal that,due to strong hydrated cation-π interactions between hydrated cations and aromatic rings in the substrate surface,the suspended matters are adsorbed on the surfaces mediated by cations so that the suspended matters are uniformly *** findings will open new avenues for fabricating functional patterns on graphene substrates and will benefit practical applications including printing,coating,and dyeing.

关键词： uniformly adsorbed adding

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Development and Application of an Extraction and Quantitative HPLC Method for Sulforaphene in Radish

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Horticultural Plant Journal 2015年第2期1卷 101-107页

作者： HUA Beibei WANG haiping ZHAO wen QIU Yang LIU Su LI Xixiang Beijing Research Station of Vegetable Crop Gene Resources and Germplasm Enhancement Ministry of Agriculture/Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Linyi (He Dong) Agricultural High Tech Industries Demonstration Zone

Sulforaphene, an isothiocyanate generated by the conversion of glucoraphenin in radish(Raphanus sativus L.), plays an important role in plants as a defensive compound and has been shown to have anti-cancer properties. However, a reliable method for the determination of sulforaphene in radish has not yet been established. In the present study, the enzymolysis conditions, extraction solvent and extraction conditions employed to obtain sulforaphene from radish were all optimized using single factor experiments and orthogonal testing. During these trials, sulforaphene was separated and quantified using reverse phase C18 high performance liquid chromatography(HPLC), employing methanol︰water(3︰7 ν/ν) as the mobile phase at a flow rate of 0.3 mL · min-1 together with a detection wavelength of 245 nm. Evaluation of this newly established method showed good linearity between the sulforaphene concentration and the characteristic peak area over the range of 5 to 200 μg· m L-1(R2 = 0.9996). This method was thus found to be precise. It was established that sulforaphene was extracted from radish with 95.48% efficiency(RSD = 0.94%) using the optimized conditions. This same technique was successfully applied to the quantification of sulforaphene in the fleshy roots of different radish germplasms as a means of selecting the germplasms with the highest sulforaphene levels.

关键词： radish sulforaphene extraction quantitative measurement high performance liquid chromatography

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论杜威技术进步观及其认识演进

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自然辩证法通讯 2024年第9期46卷 18-24页

作者：章文田海平武汉东湖学院马克思主义学院湖北武汉430212 北京师范大学哲学学院北京100875

杜威基于生存论角度,通过研究伽利略实验,提出以“操作性的技艺”为要义的关于技术进步的哲学观点。后世学者维索戈洛德从人类学角度、进而启发西克曼从认识论角度,进一步把握杜威所谓“观念就是技艺和技艺作品”,维索戈洛德提出“人造... 详细信息

杜威基于生存论角度,通过研究伽利略实验,提出以“操作性的技艺”为要义的关于技术进步的哲学观点。后世学者维索戈洛德从人类学角度、进而启发西克曼从认识论角度,进一步把握杜威所谓“观念就是技艺和技艺作品”,维索戈洛德提出“人造物”观念的存在逻辑,西克曼将其具体化,对杜威技术进步观的讨论就此转换进认识论领域。卢格德受西克曼基于时间维度的认识论启发,从本体论角度,借助非标准实用主义涌现论分析方法,指出杜威技术进步观中存在着时间化本体论的内核。从生存论到认识论再到本体论,这场由杜威开启的关于技术进步及其实质的探讨,持续近百年时间,构成较为清晰的学术发展脉络。

关键词：杜威技术进步技艺科技观

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基于生态足迹理论的内蒙古生态承载力评价

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水土保持研究 2017年第4期24卷 152-157页

作者：杨海平温焜湖南医药学院湖南怀化418000 江西行政学院南昌330003

生态足迹理论是研究区域资源可持续发展水平的重要基础,对制定科学的区域发展规划具有重要意义。通过获取的各种资源环境数据,结合不同的生态足迹模型,测算了内蒙古2001—2014年的人均生态足迹、人均生态承载力、生态盈余、生态赤字、万... 详细信息

生态足迹理论是研究区域资源可持续发展水平的重要基础,对制定科学的区域发展规划具有重要意义。通过获取的各种资源环境数据,结合不同的生态足迹模型,测算了内蒙古2001—2014年的人均生态足迹、人均生态承载力、生态盈余、生态赤字、万元GDP生态足迹等指标。结果表明:2001—2014年人均生态足迹呈快速增长趋势,由4.158 9hm2/人增至22.948 1hm2/人,年均增长率为14.59%。各类生态生产性土地人均生态足迹为:化石能源用地>耕地>草地>建设用地>林地>水域,平均占有比例分别为65.22%,22.51%,10.34%,0.84%,0.82%和0.27%。由于人均生态足迹逐年增大,其增长率远高于可利用人均生态承载力的增长率,导致2001—2014年一直处于生态赤字状态,生态赤字的出现主要是由不断加大原煤、原油等化石能源用地的生态足迹造成的。人均万元GDP生态足迹总体呈现下降趋势,该指标说明研究区正处于能源利用转型期。最后,分析了生态足迹理论研究方法的不确定性来源,并给出了进一步改进的途径。该研究对内蒙古践行"生态文明",构建北方生态安全屏障,实现经济社会可持续发展具有重要指导意义。

关键词：区域生态学生态承载力生态足迹理论生态赤字可持续发展

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燃料电池电动车用隔离Boost全桥变换器的研究

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南京航空航天大学学报 2006年第1期38卷 64-69页

作者：姜雪松温旭辉许海平中国科学院电工研究所

针对燃料电池电动车辅助能源系统低压大功率、大升压比的特点,分析了几种隔离变换器方案,这几种方案均难以做到大功率应用。为此,提出了采用隔离Boost全桥变换器拓扑方案可有效地解决上述技术难点。文中介绍了该方案的原理,详细分析了... 详细信息

针对燃料电池电动车辅助能源系统低压大功率、大升压比的特点,分析了几种隔离变换器方案,这几种方案均难以做到大功率应用。为此,提出了采用隔离Boost全桥变换器拓扑方案可有效地解决上述技术难点。文中介绍了该方案的原理,详细分析了控制系统,给出了数字化控制的实现方法和主电路关键参数的设计。为了验证上述方案的正确性,设计了5 kW,24 V输入300 V输出的隔离Boost全桥变换器。实验结果表明,系统具有良好的动态和静态性能,能有效地应用于电动汽车等领域。

关键词：燃料电池电动汽车全桥变换器直流-直流变换嚣隔离Boost变换器数字控制

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GR5 acts in the G protein pathway to regulate grain size in rice

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Plant Communications 2024年第1期5卷 181-195页

作者： Yueying Wang Yang Lv haiping Yu Peng Hu Yi wen Junge Wang Yiqing Tan Hao Wu Lixin Zhu Kaixiong Wu Bingze Chai Jialong Liu Dali Zeng Guangheng Zhang Li Zhu Zhenyu Gao Guojun Dong Deyong Ren Lan Shen Qiang Zhang Qing Li Longbiao Guo Guosheng Xiong Qian Qian Jiang Hu State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China Hainan Yazhou Bay Seed Laboratory Sanya 572024HainanChina National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572024China Nanjing Agricultural University Nan Jing 210000JiangsuChina

Grain size is an important determinant of grain yield in *** dozens of grain size genes have been reported,the molecular mechanisms that control grain size remain to be fully ***,we report the cloning and characterization of GR5(GRAIN ROUND 5),which is allelic to SMOS1/SHB/RLA1/NGR5 and en-codes an AP2 transcription ***5 acts as a transcriptional activator and determines grain size by influencing cell proliferation and *** demonstrated that GR5 physically interacts withfive Gg subunit proteins(RGG1,RGG2,DEP1,GS3,and GGC2)and acts downstream of the G protein *** downstream target genes of GR5 in grain development(DEP2,DEP3,DRW1,and CyCD5;2)were re-vealed and their core T/CGCAC motif identified by yeast one-hybrid,EMSA,and ChIP–PCR *** results revealed that GR5 interacts with Gg subunits and cooperatively determines grain size by regu-lating the expression of downstream target *** provide new insight into the genetic reg-ulatory network of the G protein signaling pathway in the control of grain size and provide a potential target for high-yield rice breeding.

关键词： grain size G proteinγsubunit GR5 AP2 transcription factor rice(Oryza sativa L.)

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分级加卸载条件下软弱复杂矿岩蠕变规律研究

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岩石力学与工程学报 2006年第8期25卷 1575-1581页

作者：袁海平曹平万文许万忠中南大学资源与安全工程学院江西理工大学应用科学学院江西赣州341000

采用集众优点于一体的分级增量循环加卸载方式,对金川有色金属公司III矿区软弱复杂矿岩进行蠕变试验,试验数据按可恢复的瞬时弹性应变与滞后黏弹性应变,以及不可恢复的瞬时塑性应变与黏塑性应变进行分析,得出软弱复杂矿岩黏弹塑性特性... 详细信息

采用集众优点于一体的分级增量循环加卸载方式,对金川有色金属公司III矿区软弱复杂矿岩进行蠕变试验,试验数据按可恢复的瞬时弹性应变与滞后黏弹性应变,以及不可恢复的瞬时塑性应变与黏塑性应变进行分析,得出软弱复杂矿岩黏弹塑性特性的基本规律。在对试验数据深入分析和对比研究的基础上,将Burgers黏弹蠕变模型与Mohr-Coulomb准则相结合,形成新的黏弹塑性模型,以研究复杂条件下软弱岩石的变形特性,并编制改进的Burgers蠕变模型试验数据处理程序,对模型参数进行拟合和加权平均取值。试验结果表明,金川III矿区矿岩蠕变试验曲线与理论曲线较为吻合,改进的Burgers蠕变模型能较好的描述岩石的蠕变特性。

关键词：岩石力学分级加卸载软弱复杂矿岩黏弹塑性蠕变 Buyers模型伺服控制

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