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国际医学放射学杂志 2024年第2期 247-248页

作者： P.Z.Chen Z.Zhou l.sun X.K.Yu K.li J.li 王俊

摘要目的使用Dixon MRI研究健康成人年龄相关性背伸肌退变的性别差异，并分析肌肉定量参数与背肌力的关系。方法纳入105名健康受试者行腰椎Dixon MRI检查。量

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Artifact analysis of a far-field coded-aperture gamma camera extended to partially coded field-of-view

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Radiation Detection Technology and Methods 2022年第4期6卷 558-568页

作者： Q.W Xliu Z.Zhang N.Jiang Y.Hou H.Zhang Y.Ji l.sun Y.Xia Beijing Engineering Research Center of Industrial Spectrum Imaging School of Automation and Electrical EngineeringUniversity of Science and Technology BeijingXueyuan Road StreetBeijing 100083China Beijing Novel Medical Equipment ltd. Beijing 102206China CNNC High Energy Equipment(Tianjin)Co.ltd. Tianjin 300300China China Beijing institute of Spacecraft Environment Engineering and Science and Technology on Reliability and Environmental Engineering LaboratoryBeijing 100094China

Purpose Coded-aperture gamma cameras play an important role for homeland security nowadays.They have limitedﬁeld-of-view(FOV)which is a critical parameter for many applications.The FOV can be potentially increased by extending it to the penumbra area(partially coded FOV).Methods In this study,we analyzed this artifact phenomenon based on simulating a commercial coded-aperture gamma camera.The camera uses a modiﬁed uniformly redundant array(MURA)mask with a basic pattern of rank 11.Its opening angle of the basic pattern to the detector center is 26.36◦which is the commonly used non-artifact FOV(NAFOV).In some applications,the radiation source is a far-ﬁeld single-point source.Thus,we extend its FOV to 40◦by including a part of the partially coded area,which is a trade-off between the FOV and image quality.Analytical calculations and simulation studies were carried out.The system matrix was calculated using the Sidden’s algorithm.The maximum likelihood expectation maximization(MlEM)reconstruction method was employed.Projections and reconstruction results of the point source at different positions were compared.The second moment of inertia was used as theﬁgure of merit.Results Results show that projections have periodic similarity with a period of NAFOV,and reconstructions also have periodic artifacts,i.e.,fromθtoθ+NAFOV.Artifacts are the most serious at the edge of the NAFOV.The upper and lower artifacts are more serious than the left and right artifacts due to the difference between the horizontal centerline(tungsten)and vertical centerline(holes expect the center unit)of the mask.Conclusions For a point source with high activity,artifacts can be reduced by increasing the iteration number of the MlEM reconstruction.Even at the edge of NAFOV,the point source can be possibly reconstructed thanks to the large size of the position sensitive detector(PSD)used.The noise will signiﬁcantly increase artifacts,which may lead to error locate the point source with low activity at some speciﬁc positions.

关键词： Homeland security Coded-aperture gamma camera Partially-codedﬁeld-of-view Artifact analysis

STCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai l.P.An R.Aliberti Q.An X.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen l.l.Chen P.Chen S.l.Chen S.M.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng S.Cheng T.G.Cheng J.P.Dai l.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.Z.Ding l.Y.Dong W.H.Dong V.Druzhinin D.S.Du Y.J.Du Z.G.Du l.M.Duan D.Epifanov Y.l.Fan S.S.Fang Z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.l.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng l.S.Geng A.Gilman l.Gong T.Gong B.Gou W.Gradl J.l.Gu A.Guevara l.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo Z.H.Guo A.Guskov K.l.Han l.Han M.Han X.Q.Hao J.B.He S.Q.He X.G.He Y.l.He Z.B.He Z.X.Heng B.l.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia Z.K.Jia H.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing X.l.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.lei E.levichev C.H.li C.li D.Y.li F.li G.li G.li H.B.li H.li H.N.li H.J.li H.l.li J.M.li J.li l.li l.li l.Y.li N.li P.R.li R.H.li S.li T.li W.J.li X.li X.H.li X.Q.li X.H.li Y.li Y.Y.li Z.J.li H.liang J.H.liang Y.T.liang G.R.liao l.Z.liao Y.liao C.X.lin D.X.lin X.S.lin B.J.liu C.W.liu D.liu F.liu G.M.liu H.B.liu J.liu J.J.liu J.B.liu K.liu K.Y.liu K.liu l.liu Q.liu S.B.liu T.liu X.liu Y.W.liu Y.liu Y.l.liu Z.Q.liu Z.Y.liu Z.W.liu I.logashenko Y.long C.G.lu J.X.lu N.lu Q.F.lü Y.lu Y.lu Z.lu P.lukin F.J.luo T.luo X.F.luo Y.H.luo H.J.lyu X.R.lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko Z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.l.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng l.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin l.Q.Qin X.S.Qin T.l.Qiu J.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de lausanne(EPFl) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics community.It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or higher.The STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard Model.The STCF project in China is under development with an extensive R&D program.This document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

3D-Stacked Multistage Inertial Microfluidic Chip for High-Throughput Enrichment of Circulating Tumor Cells

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Cyborg and Bionic Systems 2022年第1期2022卷 200-209页

作者： X.Xu X.Huang J.sun J.Chen G.Wu Y.Yao N.Zhou S.Wang l.sun Ministry of Education Key laboratory of RF Circuits and Sytems Hangzhou Dianzi UniversityHangzhou310018 ZhejiangChina Institute for Translational Medicine Zhejang UniversityHangzhou310029 ZhejiangChina Key laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of EngineeringWestlake UniversityHangzhou310024 Zhejiang China National Engineering Research Center for Biomaterials Sichuan UniversityChengdu 610065China Clinical Research Center for Respiratory Disease West Chima HospitalSichuan UniversityChengdu 610065China Institute for Advanced Study Chengdu UniversityChengdu 610106China

Whether for cancer diagnosis or single-cell analysis,it remains a major dhallenge to isolate the target sample cells from a large background cell for high-efficiency downstream detection and analysis in an integrated chip.Therefore,in this paper,we propose a 3D stacked multistage inertial microfluidic sorting chip for high-throughput enrichment of circulating tumor cells(CTCs)and convenient downstream analysis.In this chip,the first stage is a spiral channel with a trapezoidal cross-section,which has better separation performance than a spiral channel with a rectangular cross-section.The second and third stages adopt symmetrical square serpentine channels with different rectangular cross-section widths for further separation and enrichment of sample cells reducing the outlet flow rate for easier downstream detection and analysis.The multistage channel can separate 5 pum and 15 um particles with a separation efficiency of 92.37%and purity of 98.10%at a high inlet flow rate of 1.3 ml/min.Meanwhile,it can separate tumor cells(SW480,A549,and Caki-1)from massive red blood cells(RBCs)with a.separation efficiency of>80%,separation purity of>90%,and a concentration fold of~20.The proposed work is aimed at providing a high-throughput sample processing system that can be easily integrated with flowing sample detection methods for rapid CTC analysis.

关键词： fluid diagnosis separation

Effect of doped Ni-Bi-B alloy on hydrogen generation performance of Al-InCl3

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Journal of Energy Chemistry 2019年第12期28卷 268-274页

作者： Jun Chen F.Xu l.sun Kexiang Zhang Yongpeng Xia Xiaolei Guo Huanzhi Zhang Fang Yu Erhu Yan Hongliang Peng Pengru Huang Shujun Qiu Cuili Xiang Yujie sun Guangxi Key laboratory of Information Materials Guangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialsSchool of Material Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004CuangxiChina School of Material Science and Engineering China University of GeosciencesBeijing 100083China

In this work,Ni-Bi-B alloy has been synthesized via chemical synthesis method.A new kind of Al-InCl3-(Ni-Bi-B)composite has been prepared by high energy mechanical ball grinding A1 powder with additives.Results show that the doped Ni-Bi-B alloy can significantly improve the hydrogen generation performance of Al-InCl3 and the catalytic activity is enhanced with the increasing content of Bi in Ni-Bi-B alloy.Under optimal conditions,the hydrogen generation yield and conversion yield of Al-InCl3-(Ni-Bi-B)reached1196.8 ml g^-1 and 100.0%at room temperature,respectively.Mechanism study shows five kinds of active sites,such as the fresh surface/defect of Al particle,Al-AlCl3,Al-In,Al-Bi/B and Al-Ni/B produced during the ball milling process.Their synergistic effect enhances the hydrogen generation performance of AlInCl3-(Ni-Bi-B)remarkably.In general,the proposed Al-InCl3-(Ni-Bi-B)composite is possible to serve as hydrogen generation material for fuel cells.

关键词： Hydrogen generation Al-H2O reaction Al-InCl3 Ni-Bi-B alloy Ball milling

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Numerical study on static and dynamic fracture evolution around rock cavities

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Journal of Rock Mechanics and Geotechnical Engineering 2013年第4期5卷 262-276页

作者： S.Y.Wang l.sun C.Yang S.Q.Yang C.A.Tang ARC Centre of Excellence for Geotechnical Science and Engineering The University of Newcastle Department of Civil Engineering Catholic University of America School of Transportation Southeast University Centre for Geotechnical and Materials Modelling Department of CivilSurveying and Environmental EngineeringThe University of Newcastle State Key laboratory for Geomechanics and Deep Underground Engineering School of Mechanics and Civil EngineeringChina University of Mining and Technology School of Civil and Hydraulic Engineering Dalian University of Technology

In this paper,a numerical code,RFPA2D（rock failure process analysis）,was used to simulate the initiation and propagation of fractures around a pre-existing single cavity and multiple cavities in brittle rocks.Both static and dynamic loads were applied to the rock specimens to investigate the mechanism of fracture evolution around the cavities for different lateral pressure coefficients.In addition,characteristics of acoustic emission（AE） associated with fracture evolution were simulated.Finally,the evolution and interaction of fractures between multiple cavities were investigated with consideration of stress redistribution and transference in compressive and tensile stress fields.The numerically simulated results reproduced primary tensile,remote,and shear crack fractures,which are in agreement with the experimental results.Moreover,numerical results suggested that both compressive and tensile waves could influence the propagation of tensile cracks;in particular,the reflected tensile wave accelerated the propagation of tensile cracks.

关键词： Cracks Dynamic loading Numerical simulations Acoustic emission（AE） Heterogeneity

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68Ga-FAPI PET/CT检测转移性甲状腺癌：与18F-FDG PET/CT比较

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国际医学放射学杂志 2022年第5期45卷 607-608页

作者： H.Fu J.Wu J.X.Huang l.sun H.Wu W.Guo 冉淑华

摘要Ga标记的成纤维细胞活化蛋白抑制剂(FAPI)已被提议作为一种潜在的放射性示踪剂用于识别癌性病变，但其在识别转移性分化型甲状腺癌(DTC)的实用性上尚未得

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Protection and control of microgrids using dynamic state estimation

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Protection and Control of Modern Power Systems 2018年第1期3卷 349-361页

作者： Y.liu A.P.Meliopoulos l.sun S.Choi School of Information Science and Technology(SIST) ShanghaiTech UniversityShanghai 201210China School of Electrical and Computer Engineering(ECE) Georgia Institute of TechnologyAtlantaGA 30332USA

High penetration of Converter Interfaced Generations(CIGs)presents challenges in both microgrid(μGrid)circuit and other system with CIG resources,such as wind farms and PV plants.Specifically,protection challenges are mainly brought by the insufficient separation between fault and load currents,especially forμGrids in islanded operation,and the short connection length inμGrids.In addition,CIG resources exhibit limited inertia and weak coupling to any rotating machinery,which can result in large transients during disturbances.To address the above challenges,this paper proposes a Dynamic State Estimation(DSE)based algorithm for protection and control of systems with substantial CIG resources such as aμGrid.It requires a high-fidelity dynamic model and time domain(sampled value)measurements.ForμGrid circuit protection,the algorithm dependably and securely detects internal faults by checking the consistency between the circuit model and available measurements.For CIG control,the algorithm estimates the frequency at other parts of aμGrid using CIG local information only and then utilizes it to provide supplementary feedback control.Simulation results prove that DSE based protection algorithm detects internal faults faster,ignores external faults and has improved sensitivity towards high impedance faults when compared to conventional protection methods.DSE based CIG control scheme also minimizes output oscillation and transient during system disturbances.

关键词： Converter interfaced generation(CIG) Dynamic state estimation(DSE) μGrid protection

具有择优取向的Bi1-xSbx功能膜的制备

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具有择优取向的Bi1-xSbx功能膜的制备

Synthesis and theoretical calculation of a Zn（Ⅱ） coordination compound with 4- methyl piperazine acetyl hydrazine and salicylaldehyde

2004年中国材料研讨会

作者：任山 l.sun Chunxing Ji P.C.Searson 中山大学纳米技术研究中心 Department of Materials sci.and eng. Johns Hopkins University102 Maryland HallBaltimoreMD 21218-2689USA Department of Materials sci.and eng. Johns Hopkins University102 Maryland HallBaltimoreMD 21218-2689USA Department of Materials sci.and eng. Johns Hopkins University102 Maryland HallBaltimoreMD 21218-2689USA

半金属铋Bi、锑Sb具有特殊的热、电及磁性能,其中铋是所有材料中具有最小的电子有效质量及最长的电子自由程的材料。块状铋单晶体以及分子束外延或电化学沉积生长的铋膜显示出很大的磁电效应。铋及锑都是具有菱形晶体结构,两者在所有的...

半金属铋Bi、锑Sb具有特殊的热、电及磁性能,其中铋是所有材料中具有最小的电子有效质量及最长的电子自由程的材料。块状铋单晶体以及分子束外延或电化学沉积生长的铋膜显示出很大的磁电效应。铋及锑都是具有菱形晶体结构,两者在所有的成份范围内都可形成固溶体,其中Bi1-xSbx合金（0.05＜X＜0.3）为窄能带间隙半导体, 能隙宽度小于10meV,是优良的低温热电材料,可用于高效的热电式电源和电致冷材料,是目前热电功能材料研究中的重要内容。本论文采用电化学方法,合成了Bi1-xSbx热电材料膜（0≤x≤1）,薄膜成份由纯Bi一直变化为纯Sb.薄膜厚度由几百纳米到几微米。电镀液为以SbCl3、BiCl3、HCl及EDTA为主要成份的水溶液,根据膜的成份要求调整铋与锑的比例。薄膜生长基体为在单晶硅片上镀的约50-200纳米厚的具有（111）择优取向的多晶金膜。系统地研究了不同生长条件下电化学伏安特性。应用X射线射、扫描电子显微镜及原子力显微镜研究了不同生长条件和不同溶液浓度条件下膜的结构及形貌。研究发现生长的Bi-Sb薄膜的结构和晶粒大小及形貌都与生长条件和成份有关。实验发现当合金膜中锑的成份大于22%at时,得到的膜为具有（012）择优取向的外延膜。同时随着膜的成份由纯Bi变化到纯Sb,膜的晶粒尺寸由亚微米增加到几微米,而晶粒形状由无规则等轴状变成长条棱状,其脆性显著增加,膜的表面由银灰色逐渐转变成黑亮色。对膜的结构及择优取向在理论上进行了初步的探讨。

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Synthesis and theoretical calculation of a Zn（Ⅱ） coordina...