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Advanced Space-based Solar Observatory(ASO-S):an overview

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Research in Astronomy and Astrophysics 2019年第11期19卷 3-10页

作者： Wei-Qun Gan Cheng Zhu Yuan-Yong Deng Hui Li Yang Su Hai-Ying Zhang Bo Chen Zhe Zhang jian Wu Lei Deng Yu Huang jian-Feng Yang ji-jun cui jin Chang Chi Wang ji Wu Zeng-Shan Yin Wen Chen Cheng Fang Yi-Hua Yan jun Lin Wei-Ming Xiong Bin Chen Hai-Chao Bao Cai-Xia Cao Yan-Ping Bai Tao Wang Bing-Long Chen Xin-Yu Li Ye Zhang Li Feng jiang-Tao Su Ying Li Wei Chen You-Ping Li Ying-Na Su Hai-Yan Wu Mei Gu Lei Huang Xue-jun Tang Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210034China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201203China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Nanjing Institute of Astronomical Optics&Technology National Astronomical ObservatoriesChinese Academy of SciencesNanjing 210042China Changchun Institute of Optics Fine Mechanics and PhysicsChangchun 130033China Xi’an Institute of Optics and Precision Mechanics Chinese Academy of SciencesXi’an 710119China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Yunnan Observatories Chinese Academy of SciencesKunming 650011China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 101408China Beijing Special Engineering and Design Institute Beijing 100028China Beijing Institute of Tracking and Telecommunications Technology Beijing 100094China Shanghai Academy of Spaceflight Technology Shanghai 201109China

The Advanced Space-based Solar Observatory(ASO-S)is a mission proposed for the 25 th solar maximum by the Chinese solar *** scientific objectives are to study the relationships between the solar magnetic field,solar flares and coronal mass ejections(CMEs).Three payloads are deployed:the Full-disk vector Magneto Graph(FMG),the Lyman-αSolar Telescope(LST)and the Hard X-ray Imager(HXI).ASO-S will perform the first simultaneous observations of the photospheric vector magnetic field,non-thermal imaging of solar flares,and the initiation and early propagation of CMEs on a single ***-S is scheduled to be launched into a 720 km Sun-synchronous orbit in *** paper presents an overview of the mission till the end of Phase-B and the beginning of Phase-C.

关键词： space vehicles instruments-Sun magnetic fields-Sun flares-Sun CMEs-Sun UV radiation-Sun X-ray,gamma-rays

Effects of ultrasonic-assisted extraction on bioactive compounds,volatile flavors and antioxidant activities of vine tea water extracts

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Traditional Medicine Research 2025年第1期10卷 73-81页

作者： Xiao-Long Zhou Wei-jin jiang ji Yu Mao-jun Yao Yun-Tong Li Hunan Provincial Key Laboratory of Research Resource Mining and High-valued Utilization on Edible&Medicinal PlantCollege of Chemistry and Chemical EngineeringJishou UniversityJishou 416000China Hunan Gaoge Dairy Co. Ltd.Changsha 410000China

Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in *** vine tea processing,a large amount of broken tea is produced,which has low commercial ***:This study investigates the influence of different extraction methods(room temperature water extraction,boiling water extraction,ultrasonic-assisted room temperature water extraction,and ultrasonic-assisted boiling water extraction,referred to as room temperature water extraction(RE),boiling water extraction(BE),ultrasonic assistance at room temperature water extraction(URE),and ultrasonic assistance in boiling water extraction(UBE))on the yield,dihydromyricetin(DMY)content,free amino acid composition,volatile aroma components,and antioxidant properties of vine tea ***:A notable influence of extraction temperature on the yield of vine tea extracts(P<0.05),with BE yielding the highest at 43.13±0.26%,higher than that of RE(34.29±0.81%).Ultrasound-assisted extraction significantly increased the DMY content of the extracts(P<0.05),whereas DMY content in the RE extracts was 59.94±1.70%,that of URE reached 66.14±2.78%.Analysis revealed 17 amino acids,with L-serine and aspartic acid being the most abundant in the extracts,nevertheless ultrasound-assisted extraction reduced total free amino acid *** chromatography-mass spectrometry analysis demonstrated an increase in the diversity and quantity of compounds in the vine tea water extracts obtained through ultrasonic-assisted ***,69 and 68 volatile compounds were found in URE and UBE extracts,which were higher than the number found in RE and BE *** vitro,antioxidant activity assessments revealed varying antioxidant capacities among different extraction methods,with RE exhibiting the highest DPPH scavenging rate,URE leading in ABTS•+free radical scavenging,and BE demonstrating superior ferric ion reducing antioxidant ***:The findings suggest that extraction methods signi

关键词： vine tea dihydromyricetin ultrasonic-assisted extraction volatile aroma components

重载复合机器人自导引纠偏PID算法与实验研究

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机电工程 2017年第10期34卷 1208-1213页

作者：杨前明王俊基崔克克山东科技大学机械电子工程学院山东青岛266590

针对重载棉桶搬运专用复合机器人纠偏控制过程存在的问题,对复合机器人本体机构、纠偏控制系统组成、纠偏控制关键电子检测元件、PID控制算法进行了阐述,对棉桶搬运专用AGV的电子纠偏原理、电子纠偏PLC实现方法、纠偏控制模型进行了研究... 详细信息

针对重载棉桶搬运专用复合机器人纠偏控制过程存在的问题,对复合机器人本体机构、纠偏控制系统组成、纠偏控制关键电子检测元件、PID控制算法进行了阐述,对棉桶搬运专用AGV的电子纠偏原理、电子纠偏PLC实现方法、纠偏控制模型进行了研究,探讨了采用PID算法理论实现自导引车实时纠偏的控制方法;建立了AGV运动纠偏数学模型,运用Matlab软件进行仿真,获得PID纠偏算法响应曲线规律;设计了现场实际测试原理与方法,并进行实验样机的现场实地运行与测试,获得AGV运行实际轨迹与磁条中心线轨迹的偏差数据。研究结果表明:PID纠偏算法能够稳定快速地校正AGV的轨迹偏差,纠偏过程无超调、无振荡,纠偏精度≦±10 mm,达到国标设计规范要求,复合机器人整体运行平稳可靠。

关键词：复合机器人实时纠偏 PID算法实验测试

冠脉介入治疗围手术期应用比伐芦定的中国急性心肌梗死患者临床显著出血事件独立预测因素分析

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中华医学杂志 2017年第5期97卷 365-369页

作者：王贺阳韩雅玲李毅粱振洋钱钧纪征崔连群徐会圃沈阳军区总医院心内科沈阳110016 马鞍山市中心医院心内科唐山市工人医院心内科山东省立医院心内科滨州医学院附属医院心内科

目的本研究旨在进一步观察在PCI围手术期应用比伐芦定急性心肌梗死患者中，术后30d内临床显著出血事件的独立预测因素。方法纳入自2012年8月至2015年12月间，在中国88家心脏中心接受PCI治疗且在围手术期应用比伐芦定的急性心肌梗死连续... 详细信息

目的本研究旨在进一步观察在PCI围手术期应用比伐芦定急性心肌梗死患者中，术后30d内临床显著出血事件的独立预测因素。方法纳入自2012年8月至2015年12月间，在中国88家心脏中心接受PCI治疗且在围手术期应用比伐芦定的急性心肌梗死连续病例共3023例，主要观察指标为术后30d内发生的需临床干预的显著出血事件，即按出血学术研究联合会（BARC）等级划分的2—5型出血事件，并应用多因素Logistic回归方程分析临床显著出血事件的独立预测因素。结果30d随访期内，共有88例（2．9％）的患者发生了出血事件，其中需临床干预的显著出血（BARC2～5）22例（0．7％），BARC3～5型的大出血7例（0．2％）。多因素Logistic回归分析发现桡动脉穿刺路径（OR：0．196，95％CI：0．074～0．517，P=0．001）明显有助于减少临床显著出血事件的发生，贫血（OR：2．956，95％（21：1．024—8．528，P=0．045）以及eGFR〈30mL／min（OR：7．860，95％CI：1．515—40．776，P=0．014）为临床显著出血事件的独立危险因素。结论在PCI围手术期应用比伐芦定的急性心肌梗死患者中，临床显著的出血事件发生率被控制在较低水平，桡动脉穿刺路径是降低显著出血的独立保护因素，贫血和eGFR〈30ml／min增加显著出血的发生危险。

关键词：抗凝药出血血管成形术心肌梗塞

A unique organic-inorganic hybrid Fe^(Ⅲ)–Pr^(Ⅲ)-included 2-germano-20-tungstate and its electrochemical biosensing properties

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Chinese Chemical Letters 2022年第5期33卷 2630-2634页

作者： Xiaoyi Liu Limin cui jun jiang Fan ji junwei Zhao College of Chemistry and Chemical Engineering Henan UniversityKaifeng 475004China

An organic-inorganic hybrid Fe^(Ⅲ)–Pr^(Ⅲ)-included 2-germano-20-tungstate[Pr(H_(2)O)_(8)]2 H_(2)[Fe_(4)(H_(2)O)_(4)(pca)_(4) Ge_(2)W_(20)O_(72)]•34H_(2)O(Hpca=2-pyridinecarboxylic acid)(1)was hydrothermally *** polyoxoanion comprises one tetra-Fe^(Ⅲ)incorporated[Fe_(4)(H_(2)O)_(4)(pca)_(4) Ge_(2)W_(20)O_(72)]^(8-)hybrid entity and two[Pr(H_(2)O)_(8)]^(3+)ornamental ***[Fe_(4)(H_(2)O)_(4)(pca)4 Ge_(2)W_(20)O_(72)]^(8-)2-germano-20-tungstate entity can be regarded as an infrequent S-type[Ge_(2)W_(20)O_(72)]^(16-)cluster pocketed by four[Fe(H_(2)O)(pca)]2+*** S-type[Ge_(2)W_(20)O_(72)]16-cluster could be imagined as condensation of two divacant Keggin[α-GeW _(10)O_(37)]^(10-)segments by sharing two *** is of interest is that carboxyl O and pyridine N atoms on pca ligands concurrently bind with Fe ^(3+)cations in a five-membered heterocyclic fashion to increase the stability of the whole ***,the electrochemical biosensing properties of 1 as the modified electrode material have been investigated for detecting norepinephrine(NPP),showing a low detection limit of 3.25μmol/*** work not only enriches structures of heterometallic german-otungstates(GTs),but also expands applications of polyoxometalates(POMs)in the electrochemical biosensing field.

关键词： Polyoxometalate Germanotungstate Heterometallic polyoxotungstate Electrochemistry Biosensing

Sediment Delivery across Multiple Spatio-temporal Scales in an Agriculture Watershed of the Chinese Loess Plateau

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Journal of Mountain Science 2015年第5期12卷 1241-1253页

作者： ZHENG Ming-guo LI Run-kui HE ji-jun cui Ming Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences & Natural Resources Research Chinese Academic of Sciences College of Resources and Environment University of Chinese Academy of Sciences Base of the State Laboratory of Urban Environmental Processes and Digital Modeling Capital Normal University Institute of Desertification Studies Chinese Academy of Forestry

There is a consensus that sediment delivery ratio in the Chinese Loess Plateau is close to 1at the inter-annual timescale. However, little information is available about the sediment delivery at finer timescales. We evaluated the sediment delivery from plots to watersheds at the event or intra-annual, annual, and inter-annual timescales within the Wudinghe river basin, a 30,261 km2 basin in the Loess Plateau. We calculated the ratio of sediment output to sediment input and presented the temporal change of the channel morphology to determine whether sediment deposition *** a single flood event frequently has a sediment yield exceeding 10,000 t km-2, sediment deposition rarely occurs except during some small runoff events(sediment yield < 5000 t km-2) or dry years(sediment yield < 10,000 t km-2) when moving from slopes up to the main channels of the Wudinghe River. This observation suggests a sediment delivery ratio close to 1 even at the event or intra-annual and the annual timescales, but not necessarily at the interannual timescale. Such a high sediment delivery ratio can be related to hyper-concentrated flows, which have very strong sediment transport capacity even at low flow strength. Because hyper-concentrated flows are well-developed in the whole Loess Plateau, a sediment delivery ratio close to 1 below the interannual timescale possibly remains true for other rivers in the Loess Plateau.

关键词： Sediment delivery ratio Spatial scale Soil erosion Sediment yield Loess Plateau

Numerical Algorithm with Fourth-Order Spatial Accuracy for Solving the Time-Fractional Dual-Phase-Lagging Nanoscale Heat Conduction Equation

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Numerical Mathematics(Theory,Methods and Applications) 2023年第2期16卷 511-540页

作者： cui-cui ji Weizhong Dai School of Mathematics and Statistics Qingdao UniversityQingdao 266071China Mathematics and Statistics Louisiana Tech UniversityRustonLA 71272USA

Nanoscale heat transfer cannot be described by the classical Fourier law due to the very small dimension,and therefore,analyzing heat transfer in nanoscale is of crucial importance for the design and operation of nano-devices and the optimization of thermal processing of ***,time-fractional dualphase-lagging(DPL)equations with temperature jump boundary conditions have showed promising for analyzing the heat conduction in *** article proposes a numerical algorithm with high spatial accuracy for solving the timefractional dual-phase-lagging nano-heat conduction equation with temperature jump boundary *** this end,we first develop a fourth-order accurate and unconditionally stable compact finite difference scheme for solving this time-fractional DPL *** then present a fast numerical solver based on the divide-and-conquer strategy for the obtained finite difference scheme in order to reduce the huge computational work and ***,the algorithm is tested by two examples to verify the accuracy of the scheme and computational *** we apply the numerical algorithm for predicting the temperature rise in a nano-scale silicon thin *** results confirm that the present difference scheme provides min{2−α,2−β}order accuracy in time and fourth-order accuracy in space,which coincides with the theoretical *** indicate that the mentioned time-fractional DPL model could be a tool for investigating the thermal analysis in a simple nanoscale semiconductor silicon device by choosing the suitable fractional order of Caputo derivative and the parameters in the model.

关键词： Nanoscale heat transfer fractional dual-phase-lagging model finite difference scheme stability convergence

Diffusion process in enzyme-metal hybrid catalysts

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Frontiers of Chemical Science and Engineering 2022年第6期16卷 921-929页

作者： Shitong cui jun Ge Key Lab for Industrial Biocatalysis Ministry of EducationDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate SchoolShenzhen 518055China

Enzyme-metal hybrid catalysts bridge the gap between enzymatic and heterogeneous catalysis,which is significant for expanding biocatalysis to a broader *** studies have demonstrated that the enzyme-metal hybrid catalysts exhibited considerably higher catalytic efficiency in cascade reactions,compared with that of the combination of separated enzyme and metal ***,the precise mechanism of this phenomenon remains ***,we investigated the diffusion process in enzyme-metal hybrid catalysts using Pd/lipase-Pluronic conjugates and the combination of immobilized lipase(Novozyme 435)and Pd/C as *** reference to experimental data in previous studies,the Weisz-Prater parameter and efficiency factor of internal diffusion were calculated to evaluate the internal diffusion limitations in these ***,a kinetic model was developed and fitted to describe the proximity effect in hybrid *** indicated that the enhanced catalytic efficiency of hybrid catalysts may arise from the decreased internal diffusion limitation,size effect of Pd clusters and proximity of the enzyme and metal active sites,which provides a theoretical foundation for the rational design of enzyme-metal hybrid catalysts.

关键词： enzyme-metal hybrid catalyst internal diffusion proximity effect kinetic model

Microstructural evolution of Al-8.59Zn-2.00Mg-2.44Cu during homogenization

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International Journal of Minerals,Metallurgy and Materials 2014年第12期21卷 1215-1221页

作者： Wen-xiang Shu jun-cheng Liu Long-gang Hou Hua cui jun-tao Liu ji-shan Zhang State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing School of Materials Science and Engineering University of Science and Technology Beijing State Key Laboratory for Fabrication and Processes of Nonferrous Metals General Research Institute for Nonferrous Metals

The microstructural evolution and phase transformations of a high-alloyed Al-Zn-Mg-Cu alloy （Al-8.59Zn-2.00Mg-2.44Cu,wt%） during homogenization were investigated. The results show that the as-cast microstructure mainly contains dendritic α（Al）, non-equilibrium eutectics （α（Al）＋ Mg（Zn,Al,Cu）2）, and the θ （Al2Cu） phase. Neither the T （Al2Mg3Zn3） phase nor the S （Al2CuMg） phase was found in the as-cast alloy. The calculated phase components according to the Scheil model are in agreement with experimental results. During homogenization at 460℃, all of the θ phase and most of the Mg（Zn,Al,Cu）2 phase were dissolved, whereas a portion of the Mg（Zn,Al,Cu）2 phase was transformed into the S phase. The type and amount of residual phases remaining after homogenization at 460℃ for 168 h and by a two-step homogenization process conducted at 460℃ for 24 h and 475℃ for 24 h （460℃/24 h ＋ 475℃/24 h） are in good accord with the calculated phase diagrams. It is concluded that the Al-8.59Zn-2.00Mg-2.44Cu alloy can be homogenized adequately under the 460℃/24 h ＋ 475℃/24 h treatment.

关键词： aluminum alloys homogenization microstructural evolution phase composition thermodynamic calculations