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Prototype of the readout electronics for the RICH PID detector in the STCF

Nuclear Science and Techniques 2022年第6期33卷 148-160页

作者： Bao-Lin Hou Lei Zhao Jia-Jun qin ye-qun qi Jia-Ming Li Zi-Yu Yang Shu-Bin Liu qi An State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Information Engineering Southwest University of Science and TechnologyMianyang 621010China

The ring imaging Cherenkov(RICH) detector for particle identification(PID) is being evaluated for the future super tau-charm facility(STCF) complex. In this work, the prototype readout electronics for the RICH PID detector is designed. The prototype RICH PID detector is based on a thick gas electron multiplier combined with a micromegas detector for Cherenkov light detection. Considering that there will be a large number(~ 690,000) of detector channels in future RICH detector, the readout electronics faces many challenges to precisely measuring time and charge information, such as reducing the noise,increasing density, and improving precision. The requirements of the readout electronics are explored, the downselection of the ASICs is made and thus a prototype readout electronics is designed and implemented. Tests are also conducted to evaluate the performance of the prototype readout electronics, and the results indicate that the time resolution is better than ~ 1 ns(RMS) when the input charge is greater than ~ 12 fC based on the APV25chip, while the time resolution is better than ~ 1 ns(RMS) at an input charge of over ~ 48 fC based on the AGET and STCF ASIC chips, and the equivalent noise charge is better than ~ 0.5 fC(RMS) @ 20 pF based on the three ASICs. The test results indicate that the prototype readout electronics design meets the requirement of the future RICH PID detector and thus provides a reference for future engineering.

关键词： Readout electronics Time measurement Charge measurement RICH PID detector STCF

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氟西汀(百忧解)联合奥氮平治疗帕金森病伴抑郁的疗效观察

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海南医学 2012年第15期23卷 35-36页

作者：叶其群田伟重庆三峡民康医院精神科重庆404300

目的观察氟西汀联合奥氮平治疗帕金森病伴抑郁患者的临床疗效。方法 120例帕金森病伴抑郁患者随机分为两组,观察组和对照组,各60例,所有患者继续使用原抗帕金森药物,对照组给予氟西汀口服,观察组在对照组用药的基础上口服奥氮平,比较两... 详细信息

目的观察氟西汀联合奥氮平治疗帕金森病伴抑郁患者的临床疗效。方法 120例帕金森病伴抑郁患者随机分为两组,观察组和对照组,各60例,所有患者继续使用原抗帕金森药物,对照组给予氟西汀口服,观察组在对照组用药的基础上口服奥氮平,比较两组的疗效及不良反应。结果观察组的抗抑郁显效率显著高于对照组(86.7%vs68.3%,P0.05)。结论氟西汀联合奥氮平治疗帕金森病伴抑郁具有良好的疗效,且不良反应少,值得在临床推广。

关键词：氟西汀奥氮平帕金森病抑郁

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无抽搐电休克疗法治疗难治性抑郁疗效观察

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临床和实验医学杂志 2013年第3期12卷 197-198页

作者：叶其群田伟重庆三峡民康医院重庆404300

目的探讨难治性抑郁症(TRD)的治疗方法,为临床治疗TRD提供新的治疗方案。方法选取2009年4月至2010年5月接收的60例TRD病例,将其随机分为研究组和对照组,各30例,研究组采用无抽搐电休克疗法治疗TRD,对照组采用常规抗抑郁药物治疗TRD,对... 详细信息

目的探讨难治性抑郁症(TRD)的治疗方法,为临床治疗TRD提供新的治疗方案。方法选取2009年4月至2010年5月接收的60例TRD病例,将其随机分为研究组和对照组,各30例,研究组采用无抽搐电休克疗法治疗TRD,对照组采用常规抗抑郁药物治疗TRD,对比分析两组治疗TRD的治疗效果以及不良反应。结果研究组治疗后第1、2、4周的HAMD平均减分率分别25.1%、34.9%、64.9%,而对照组治疗后第1、2、4周的HAMD平均减分率分别为4.9%、8.5%、16.8%。研究组的HAMD平均减分率明显高于对照组的HAMD平均减分率。治疗结束后1周,研究组的总有效率为63.33%;对照组的总有效率为30.00%,研究组总有效率明显高于对照组。结论相比于常规药物治疗,无抽搐电休克疗法治疗TRD具有见效快、疗效好、不良反应少以及患者依从性好等诸多优点,是临床上治疗TRD安全、快速、有效的方法。

关键词：难治性抑郁症无抽搐电休克疗法疗效

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Linear operators and positive semidefiniteness of symmetric tensor spaces

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Science China Mathematics 2015年第1期58卷 197-212页

作者： LUO Zi Yan qi Li qun ye Yin Yu State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Department of Applied Mathematics The Hong Kong Polytechnic University Department of Management Science and Engineering Stanford University

We study symmetric tensor spaces and cones arising from polynomial optimization and physical *** prove a decomposition invariance theorem for linear operators over the symmetric tensor space,which leads to several other interesting properties in symmetric tensor *** then consider the positive semidefiniteness of linear operators which deduces the convexity of the Frobenius norm function of a symmetric ***,we characterize the symmetric positive semidefinite tensor(SDT)cone by employing the properties of linear operators,design some face structures of its dual cone,and analyze its relationship to many other tensor *** particular,we show that the cone is self-dual if and only if the polynomial is quadratic,give specific characterizations of tensors that are in the primal cone but not in the dual for higher order cases,and develop a complete relationship map among the tensor cones appeared in the literature.

关键词： symmetric tensor symmetric positive semidefinite tensor cone linear operator SOS cone

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A survey of federated learning for edge computing:Research problems and solutions

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High-Confidence Computing 2021年第1期1卷 55-67页

作者： qi Xia Winson ye Zeyi Tao Jindi Wu qun Li Department of Computer Science College of William and Mary 251 Jamestown Rd.WilliamsburgVA 23185USA

Federated Learning is a machine learning scheme in which a shared prediction model can be collaboratively learned by a number of distributed nodes using their locally stored *** can provide better data privacy be-cause training data are not transmitted to a central *** learning is well suited for edge computing applications and can leverage the the computation power of edge servers and the data collected on widely dis-persed edge *** build such an edge federated learning system,we need to tackle a number of technical *** this survey,we provide a new perspective on the applications,development tools,communication efficiency,security&privacy,migration and scheduling in edge federated learning.

关键词： Federated learning Edge computing

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Lipid metabolism and diseases

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Science Bulletin 2016年第19期61卷 1471-1472页

作者： qi-qun Tang Key Laboratory of Metabolism and Molecular Medicine Ministry of Education Department of Biochemistry and Molecular Biology Fudan University Shanghai Medical College

Lipids are a large and diverse class of biomolecules that exert multiple biochemical functions,such as fueling energy production,and building blocks for plasma membrane and chemical signals during cellular communication.

关键词：冠状动脉疾病脂代谢代谢性疾病能源生产脂肪组织脂质代谢睡眠呼吸暂停能量平衡

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A SUPERONVERGENCE ANALYISIS FOR FINITE ELEMENT SOLUTION BY THE INTERPOLANT POSTPROCESSING ON IRREGULAR MESHES FOR SMOOTH PROBLEM

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Journal of Computational Mathematics 2001年第3期19卷 323-326页

作者： qi-ding Zhu qun Lin Institute of Science Hunan Normal UniversityChangsha 410081China Institute of System Academy of Mathematics and Systems SciencesChinese Academy of SciencesBeijing 100080China

The post-processing procedure is given by a interpolant postprocessing of the finit element solution by appropriately-define finite dimensional subspaces, The corresponding superconvergence are established on general ... 详细信息

关键词： finite element superconvergence interpolant postprocessing

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Solution-phase Synthesis of One-dimensional Semiconductor Nanostructures

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Journal of Materials Science & Technology 2008年第4期24卷 529-540页

作者： Jianfeng ye Limin qi Beijing National Laboratory for Molecular Sciences （BNLMS） State Key Laboratory for Structural Chemistry of Unstable and Stable Species College of Chemistry Peking University Beijing 100871 China

The synthesis of one-dimensional （1D） semiconductor nanostructures has been studied intensively for a wide range of materials due to their unique structural and physical properties and promising potential for future technological applications. Among various strategies for synthesizing 1D semiconductor nanostructures, solution-phase synthetic routes are advantageous in terms of cost, throughput, modulation of composition, and the potential for large-scale and environmentally benign production. This article gives a concise review on the recent developments in the solution-phase synthesis of ID semiconductor nanostructures of different compositions, sizes, shapes, and architectures. We first introduce several typical solution-phase synthetic routes based on controlled precipitation from homogeneous solutions, including hydrothermal/solvothermal process, solution-liquid-solid （SLS） process, high-temperature organic-solution process, and low-temperature aqueous-solution process. Subsequently, we discuss two solution-phase synthetic strategies involving solid tem- plates or substrates, such as the chemical transformation of 1D sacrificial templates and the oriented growth of 1D nanostructure arrays on solid substrates. Finally, prospects of the solution-phase approaches to 1D semiconductor nanostructures will be briefly discussed.

关键词： Solution-phase synthesis One-dimensional Nanostructures Semiconductor

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Roles of Pectin Methylesterases in Pollen-Tube Growth

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Journal of Integrative Plant Biology 2007年第1期49卷 94-98页

作者： Li-qun Chen De ye State Key Laboratory of Plant Physiology and Biochemistry College of Biological Sciences China Agricultural University Beijing 100094 China

Elongation of the pollen tube in pistil is essential for delivering sperms into the female gametophyte in sexual plant reproduction. Recently, a group of cell wall enzymes, pectin methylesterases （PMEs）, have been identified as playing an important role in this process. This article reviews the new understanding of the roles of PMEs in regulating pollen tube growth.

关键词： PME pollen tube male gametophyte sexual plant reproduction Arabidopsis

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Inkjet-Printed Organic Solar Cells and Perovskite Solar Cells: Progress,Challenges, and Prospect

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Chinese Journal of Polymer Science 2023年第8期41卷 1169-1197,I0005页

作者： Xing-Ze Chen qun Luo Chang-qi Ma School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230027China i-Lab&Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

In recent years,the power conversion efficiency of organic solar cells(OSCs)and perovskite(PVSCs)has increased to over 19%and25%,***,the long-term stability of OSCs and PVSCs was also significantly improved with a better understanding of the degradation mechanism and the improvement of materials,morphology,and interface *** both the efficiency and lifetime of solar cells are approaching the commercialization limit,fabrication methods for large-area OSCs and PVSCs that can be directly transferred from lab to fab become essential to promote the industrialization of OSCs and *** with the coating methods,inkjet printing is a mature industrial technology with the advantages of random digital patterning,excellent precision and fast printing speed,which is considered to have great potential in solar cell *** efforts have been devoted to developing inkjet-printed OSCs and PVSCs,and much progress has been achieved in the last few *** this review,we first introduced the working principle of inkjet printing,the rheology requirements of inks,and the behaviors of the *** then summarized the recent research progresses of the inkjet-printed OSCs and PVSCs to facilitate knowledge transfer between the two *** the end,we gave a perspective on inkjet-printed OSCs and PVSCs.

关键词： Organic solar cells Perovskite solar cells Inkjet printing Ink formulation Morphology control

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