检索结果-南通市图书馆

Study on low noise cryogenic charge readout electronics for liquid xenon time projection chamber

Radiation Detection Technology and Methods 2021年第1期5卷 71-77页

作者： xing-cheng tian Xiao-shan Jiang Wen-huan Wu Huai-shen Li Wei Wei Jun Hu State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China University of Chinese Academy of Sciences(UCAS) Beijing 100049China China Spallation Neutron Source Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Dongguan 523803China

Background Liquid xenon time projection chamber(LXe TPC)is widely used in high-energy physics experiments such as particle detection and neutrino(or neutrinoless)double beta *** charge readout accuracy of the LXeTPCdirectly affects the measurement results and success of the *** liquid xenon needs to maintain a cryogenic temperature between 162 and 165 K at atmospheric pressure,the charge generated in the LXe TPC always needs to be read out in the cryogenic environment for minimizing the input capacitance,which has effect in determining the output noise of the charge *** Design a charge readout electronics system applicable to LXe TPC and research a data analysis method to get the exact amount of charge by analyzing the waveform at that output of the designed electronics *** Design a multi-channel charge-reading application specific integrated circuit(ASIC)that can operate in the cryogenic *** signals and power supply of the ASIC are connected to an electronics system at room temperature through micro-coaxial *** electronics at room temperature complete the sampling of the ASIC output.A data acquisition device receives the sampled waveform data and calculates the charge measurement resolution by Gaussian *** The designed ASIC and selected micro-coaxial cable can work in stable condition under the cryogenic environment of 165 *** analyzed integral nonlinearity of the charge measurement of the chip is 0.83%in the range from 1 to 50 fC,and the charge measurement resolution of the chip is lower than 900 e−*** In this paper,a preliminary study of the charge readout method based on the system structure of self-developed ASIC,micro-coaxial cable,and data readout electronics is completed for LXe *** system test results indicate that the designed ASIC can work normally in the cryogenic temperature of 165 K with a high dynamic range and good linearity of the charge ***

关键词： nEXO Cryogenic ASIC Micro-coaxial cable Gaussian fitting

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Test of a ^(3)He neutron detector readout electronics prototype for CSNS multipurpose physics neutron diffractometer

引用

Radiation Detection Technology and Methods 2021年第2期5卷 200-206页

作者： Xiao-guang Wu Yu-bin Zhao Hong Luo Jian-rong Zhou Liang Xiao Xiao-juan Zhou Bei-ju Guan xing-cheng tian Lin Zhu xing-fen Jiang Zhi-jia Sun State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China

Background Large areas of 3He neutron detector array and corresponding readout electronics are used in the MPI built at China Spallation Neutron Source(CSNS)to measure the position and flight time of scattered neutrons,and MPI has a high requirement for the position resolution of 3He neutron detector.A 3He neutron detector readout electronics prototype composed of two front-end boards and one digital readout board is designed to meet the above *** Testing the whole readout electronics system before its mass production to ensure it can run correctly and fulfill the functional and performance *** The test of the readout electronics prototype is implemented in the laboratory,and a signal generator is used to generate electronic signals instead of actual neutron *** position resolution test of the readout electronics prototype with 3He tubes is carried out in the No.20 beamline measurement room of *** and Conclusion The functional and performance tests in the laboratory state that the readout electronics prototype can fulfill the readout *** typical value of charge resolution is 0.85 fC;the integral nonlinearity of charge is 0.094%in the input charge range from 100 to 800 *** position resolution test result of the prototype with 3He tubes is better than the design requirement of 10 mm and also quite good compared with that of some other commercial *** tests provide a reliable basis for the mass production of the readout electronics prototype.

关键词： CSNS MPI 3He tube Readout electronics prototype Functional and performance tests

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design of a MAPS readout electronics prototype for BESIII inner tracker

引用

Radiation Detection Technology and Methods 2020年第2期4卷 241-249页

作者： xing-cheng tian Xiao-shan Jiang Jun Hu Qun Ou Yang Ming-yi Dong Chao-yue Qu Xu-dong Ju Hong-yu Zhang Ye Wu Xiao-xu Lu State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China University of Chinese Academy of Sciences(UCAS) Beijing 100049China China Spallation Neutron Source Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Dongguan 523803China

Background The spatial resolution and the reconstruction efficiency of the main drift chamber of the Beijing Spectrometer III has degraded aftermore than nine years of *** improved new inner drift chamber has been constructed to replace the old chamber in case of the radiation *** active pixel sensor(MAPS)based detector prototype is selected as one of the prototype schemes for the inner chamber *** Design a set of MAPS readout electronics system for the inner drift chamber *** system can verify the function and performance of the selected MAPS chip and discover the matters needing attention when designing large-scale *** The electronics system design is composed of three *** first part is flexible printed circuit boards(PCBs)assembled with the MAPS *** second part is digital readout boards,which are connected to the flexible PCBs via FPGA mezzanine card *** digital readout board realizes the configuration of the MAPS chip register,receives and processes the data output by the MAPS chip,and transfers the processed data to the DAQ *** third part includes a readout control board and two fan-out boards that used to separately fan out the trigger signal and the start signal to all the digital readout *** and conclusion AMAPS readout electronics system consisting of five MAPS based detector prototypes is *** system can work stably under the electron beam experimental conditions with a frequency up to 2 kHz and energy ranging from 1 to 5 *** system detection efficiency of the electron beam is∼95%,and the spatial resolution is∼5.3μm at electron energies of 1 *** design of the electronics system meets the requirements for verifying the performance of the MAPS chips and the technical feasibility of the detector structure.

关键词： BESIII MAPS pixel detector JTAG FPGA

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Anlotinib-induced sick sinus syndrome:Two case reports

引用

World Journal of Clinical Cases 2025年第6期13卷 30-34页

作者： cheng-Feng Fu Li-Fen Yang Lei tian Song Deng Qi Zhang Biao Yao Department of Oncology Tongren People’s HospitalTongren 554300Guizhou ProvinceChina Department of Oncology Guizhou Provincial People’s HospitalGuiyang 550000Guizhou ProvinceChina

BACKGROUND This manuscript describes the first known cases of sick sinus syndrome(SSS)associated with the use of anlotinib in non-small cell lung cancer patients,highlighting the need for increased vigilance and cardiac *** SUMMARY Two patients with non-small cell lung cancer developed SSS after 15 months and 5 months of anlotinib treatment,respectively,presenting with syncope and *** confirmed SSS,and different treatment approaches were taken for each *** patient received a dual-chamber permanent pacemaker,while the other discontinued the medication and experienced symptom *** Anlotinib can induce SSS,suggesting that cardiac monitoring is crucial during anlotinib *** management strategies are necessary for affected individuals.

关键词： Lung cancer Anlotinib Sick sinus syndrome Cardiac pacemaker Adverse drug reaction Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jupiter: a modern federated learning platform for regional medical care

引用

Science China(Information Sciences) 2021年第10期64卷 152-165页

作者： Ju xing Jiadong tian Zexun JIANG Jiali cheng Hao YIN Department of Automation Tsinghua University School of Cyberspace Security Beijing University of Posts and Telecommunications Department of Computer Science and Technology Tsinghua University College of Engineering Northeastern University

With the emergence of AI technologies, intrinsic value of data is released and takes tremendous effects on numerous industries. In the context of regional medical care, data sharing and cooperating is in high demand, which can bring both financial and societal benefits. At present, however, medical data are locked inside medical facilities owing to legal risks and economic considerations. How to bring AI technologies into full play under this circumstance is a big challenge. In this paper, we propose Jupiter, an easy-to-use,secure, and high-performance platform for federated machine learning. Jupiter constructs a secure and highperformance aggregator cluster with SGX to efficiently aggregate the encrypted model parameters. Jupiter employs a stateful design to cooperate with medical facilities in regional medical systems with a fixed network connection. By providing an innovative programming abstraction, Jupiter makes model development more friendly to developers. The experiments show that with a low memory footprint, the throughput of a single node on an ordinary PC can reach 300 MB/s(with slice size fixed to 64 KB), and the aggregation primitive we built can process 11 k aggregations per second.

关键词： federated learning programming abstraction SGX high-performance

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Research status and prospects of the fractal analysis of metal material surfaces and interfaces

引用

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie tian Qinghe Cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advances in ethnopharmacology,phytochemistry and pharmacology of Erigerontis Herba and its Chinese medicine prescriptions

引用

Traditional Medicine Research 2025年第1期10卷 44-61页

作者： Yang Zhou Yuan-Yan Huang Ding-Yue Shang Ying Chen Meng tian cheng-Yu Jin Xin Lu Bing-Chun Yan Han-Qing Pang Institute of Translational Medicine School of MedicineYangzhou UniversityYangzhou 225009China Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases Yangzhou UniversityYangzhou 225009China School of Medicine Nanjing University of Chinese MedicineNanjing 210023China State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Guangxi Normal UniversityGuiling 541004China.

Erigerontis Herba(EH),the dried whole plant of Erigeron breviscapus,is well-known for circulating blood,activating meridians to alleviate pain,expelling wind,and clearing away *** has been extensively utilized in southern China for the treatment of stroke hemiplegia,chest stuffiness and pains,rheumatic arthralgia,headache,and *** review focuses on the botany,ethnopharmacology,phytochemistry,pharmacology and toxicity of EH and its related prescriptions to offer new insights for prospective research of *** information about EH was retrieved from ancient records and books,PubMed,China National Knowledge Infrastructure,Chinese Pharmacopoeia,Web of Science,Doctoral and Master’s Theses,and various electronic *** is a member of Compositae family and is mainly grown in southern *** Chinese medicine records that EH has the effects of circulating blood and removing blood stasis,expelling wind,and removing cold,as well as relieving rigidity of muscle and relieving *** now,nearly 200 ingredients have been characterized from EH,including flavonoids,caffeoyls,aromatic acids,coumarins,pentacyclic terpenoids,volatile oil and other *** extracts,EH related prescriptions(Dengzhan Xixin injection,Dengzhan Shengmai capsules,etc.)or compounds(scutellarin,scutellarein,etc.)possessed obvious therapeutic effects of ischemic stroke,cerebral hemorrhage,myocardial infarction,Alzheimer’s disease,diabetes and its complications,gastric cancer,bone,and joint degenerative ***,the major active compound of EH,has been used as a quality *** no obvious toxicity of EH has been *** to its traditional applications,ethnopharmacology,phytochemistry,pharmacology,and toxicity,EH was applied as a valuable herb for clinical application in food and medicine *** several compounds have been shown to possess diverse biological activities,the underlying mechanisms of their actions remain *** fully exploi

关键词： Erigeron breviscapus traditional applications ethnopharmacology phytochemistry pharmacology

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

富血小板血浆促进创面愈合的细胞和分子机制

引用

中国组织工程研究 2025年第13期29卷 2793-2801页

作者：龙晨艳程飚田举广东医科大学第一临床医学院广东省湛江市524000 广东医科大学中山市人民医院烧伤整形美容科广东省中山市528400 南部战区总医院烧伤整形科广东省广州市510030

背景:尽管富血小板血浆在促进创面愈合方面显示出治疗潜力,但其临床应用仍需要进一步的研究和验证。此外,对于富血小板血浆作用的机制仍存在一些争议和不确定性。目的:通过对富血小板血浆促进创面愈合的机制进行概述和分析,以增进对该... 详细信息

背景:尽管富血小板血浆在促进创面愈合方面显示出治疗潜力,但其临床应用仍需要进一步的研究和验证。此外,对于富血小板血浆作用的机制仍存在一些争议和不确定性。目的:通过对富血小板血浆促进创面愈合的机制进行概述和分析,以增进对该治疗方法的理解,为未来的基础研究和临床应用提供有益的指导。方法:在中国知网、PubMed数据库检索2000年1月至2023年12月发表的相关文献。英文检索词为“platelet rich plasma,PRP,wound,wound healing,refractory wounds,chronic wounds,cellular and molecular mechanisms,signaling pathways,regenerative medicine”,中文检索词为“富血小板血浆,PRP,创面,伤口,创面愈合,难愈性创面,慢性创面,细胞和分子机制,信号通路,再生医学”。根据纳入和排除标准,最终对80篇文献进行综述。结果与结论:①富血小板血浆在创面愈合中具有许多潜在的优势,它能够提供丰富的生长因子和细胞因子等生物活性物质;②富血小板血浆可以调节参与创面愈合的各种细胞类型的功能,包括表皮细胞、血管内皮细胞、成纤维细胞、干细胞和炎症细胞等;③在富血小板血浆疗法中,细胞外囊泡、线粒体对于创面愈合可能扮演着重要角色;④负载富血小板血浆水凝胶可广泛用于增强组织再生和作为药物传递的功能性载体;⑤富血小板血浆对创面细胞外基质合成和降解起调节作用,从而影响伤口愈合过程中基质重建;⑥富血小板血浆可能通过动态调节多种信号通路和上皮间质转化来影响组织修复与再生,从而为创面愈合的研究提供了全新的视角。

关键词：富血小板血浆生长因子创面愈合细胞和分子机制信号通路再生医学

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Learning a discriminative high-fidelity dictionary for single channel source separation

引用

Journal of Systems Engineering and Electronics 2021年第5期32卷 1097-1110页

作者： tian Yuanrong WANG xing School of Electronic Countermeasure National University of Defense TechnologyHefei 230037China Institute of Aeronautics Engineering Air Force Engineering UniversityXi’an 710038China

Sparse-representation-based single-channel source separation,which aims to recover each source’s signal using its corresponding sub-dictionary,has attracted many scholars’*** basic premise of this model is that each sub-dictionary possesses discriminative information about its corresponding source,and this information can be used to recover almost every sample from that ***,in a more general sense,the samples from a source are composed not only of discriminative information but also common information shared with other *** paper proposes learning a discriminative high-fidelity dictionary to improve the separation *** innovations are ***,an extra sub-dictionary was combined into a conventional union dictionary to ensure that the source-specific sub-dictionaries can capture only the purely discriminative information for their corresponding sources because the common information is collected in the additional ***,a task-driven learning algorithm is designed to optimize the new union dictionary and a set of weights that indicate how much of the common information should be allocated to each ***,a source separation scheme based on the learned dictionary is *** results on a human speech dataset yield evidence that our algorithm can achieve better separation performance than either state-of-the-art or traditional algorithms.

关键词： single channel source separation sparse representation dictionary learning discrimination high-fidelity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Review of precipitation strengthening in ultrahigh-strength martensitic steel

引用

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 256-269页

作者： Zhihao tian Chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui Wu Shuize Wang Guilin Wu Junheng Gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials Science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：