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Broadband strong optical dichroism in topological Dirac semimetals with Fermi velocity anisotropy

Chinese Physics B 2020年第7期29卷 128-134页

作者： J Lim K J A Ooi C z.ang L K ang Yee Sin ang Science Math and TechnologySingapore University of Technology and DesignSingapore School of Energy and Chemical Engineering Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China School of Physics University of WollongongNorthfields AvenueNew South Wales 2522Australia

Prototypical three-dimensional(3D)topological Dirac semimetals(DSMs),such as Cd3As2 and Na3Bi,contain electrons that obey a linear momentum-energy dispersion with different Fermi velocities along the three orthogonal momentum *** being extensively studied in recent years,the inherent Fermi velocity anisotropy has often been neglected in the theoretical and numerical studies of 3D *** this omission does not qualitatively alter the physics of light-driven massless quasiparticles in 3D DSMs,it does quantitatively change the optical coefficients which can lead to nontrivial implications in terms of nanophotonics and plasmonics *** we study the linear optical response of 3D DSMs for general Fermi velocity values along each *** the signature conductivity-frequency scaling,σ(ω)∝ω,of 3D Dirac fermion is well-protected from the Fermi velocity anisotropy,the linear optical response exhibits strong linear dichroism as captured by the universal extinction ratio scaling law,Λi j=(vi/v j)^2(where i=j denotes the three spatial coordinates x,y,z,and vi is the i-direction Fermi velocity),which is independent of frequency,temperature,doping,and carrier scattering *** Cd3As2 and Na3Bi3,an exceptionally strong extinction ratio larger than 15 and covering a broad terahertz window is *** findings shed new light on the role of Fermi velocity anisotropy in the optical response of Dirac semimetals and open up novel polarization-sensitive functionalities,such as photodetection and light modulation.

关键词： topological Dirac semimetal optical anisotropy linear dichroismn linear response theory

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左旋布比卡因在上肢骨折患者超声引导下腋路臂丛神经阻滞麻醉中的应用研究

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四川生理科学杂志 2024年第6期46卷 1286-1287,1357页

作者：涂盎然李璐叶静江西省南昌市新建区中医医院麻醉科江西南昌330100 中国人民解放军联勤保障部队第908医院门诊部江西南昌330100

目的:探究左旋布比卡因在上肢骨折患者超声引导下腋路臂丛神经阻滞麻醉中的应用。方法:按随机数表法将2020年1月至2022年1月我院择期在腋路臂丛神经阻滞麻醉下行手术治疗的122例上肢骨折患者分为左旋布比卡因组(A组,0.375%左旋布比卡因... 详细信息

目的:探究左旋布比卡因在上肢骨折患者超声引导下腋路臂丛神经阻滞麻醉中的应用。方法:按随机数表法将2020年1月至2022年1月我院择期在腋路臂丛神经阻滞麻醉下行手术治疗的122例上肢骨折患者分为左旋布比卡因组(A组,0.375%左旋布比卡因)和布比卡因组(B组,0.375%布比卡因),每组61例。比较两组感觉和运动神经阻滞指标、给药30 min后运动神经阻滞程度及不良反应。结果:两组感觉和运动神经阻滞指标差异、不良反应发生率(6.00%vs 10.00%)无统计学意义(P>0.05);A组给药30 min后改良Bromage分级优于B组(z=2.239,P=0.025)。结论:采用左旋布比卡因用于上肢骨折患者超声引导下腋路臂丛神经阻滞麻醉可提供较满意的运动神经阻滞效果。

关键词：上肢骨折臂丛神经阻滞左旋布比卡因超声引导

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Entropic destruction of heavy quarkonium with hyperscaling violation

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Chinese Physics C 2021年第10期45卷 47-52页

作者： ang Li zi-Qiang z.ang School of Mathematics and Physics China University of GeosciencesWuhan 430074China Key Laboratory of Quark and Lepton Physics(MOE) Central China Normal UniversityWuhan 430079China

We study the entropic destruction of heavy quarkonium in strongly coupled theories with an anisotropic scaling symmetry in time and a spatial *** consider Lifshitz and hyperscaling violation theories,which are covariant under a generalized Lifshitz scaling symmetry with the dynamical exponent z and hyperscaling violation exponentθ.It is shown that the entropic force depends on the parameters of these *** particular,increasing z decreases the entropic force,thus reducing the quarkonium dissociation,while increasingθhas the opposite effect.

关键词： QGP quarkonium dissociation AdS/CFT correspondence entropic force

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光伏逆变器IGBT器件接线故障诊断方法

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河北大学学报（自然科学版） 2024年第1期44卷 17-26页

作者：赵智强帕孜来·马合木提刘行行周昂新疆大学电气工程学院新疆乌鲁木齐830017

针对光伏逆变器的绝缘栅双极型晶体管(insulated gate bipolar transistor,IGBT)接线故障不易发现且易被忽略,现有方法诊断速度慢、识别率低的问题,提出了一种基于电压均值的特征提取策略,并利用改进狮群算法(improved loin swarm optim... 详细信息

针对光伏逆变器的绝缘栅双极型晶体管(insulated gate bipolar transistor,IGBT)接线故障不易发现且易被忽略,现有方法诊断速度慢、识别率低的问题,提出了一种基于电压均值的特征提取策略,并利用改进狮群算法(improved loin swarm optimization,ILSO)优化核极限学习机(kernel extreme learning machine,KELM),实现对IGBT的故障诊断.首先,分析逆变器各状态下三相电压Concordia变换后的效果,获得表征故障特征的二维向量,通过二维散点图验证接线故障的可分性;其次,通过Sine混沌映射改进的狮群算法(loin swarm optimization,LSO)对KELM进行参数寻优,建立诊断模型;最后,以z源逆变器为例进行验证.结果表明:对于逆变器的IGBT接线故障,所提方法能提取包含丰富故障信息的二维故障特征,极大地简化了特征提取的过程,且诊断方法适用于单个和2个器件的故障类型,与其他方法相比速度更快,故障识别率更高.

关键词：逆变器接线故障电压平均值狮群算法核极限学习机故障诊断

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基于ITHBC理论的健康教育在心脏瓣膜置换中的应用效果

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中国卫生标准管理 2024年第15期15卷 180-184页

作者：杨元欢韦靖唐彬鋆韦敏頔彭春瑜黄春惠广西壮族自治区人民医院心胸血管外科广西南宁530021 广西壮族自治区人民医院心脏康复中心广西南宁530021

目的分析正中开胸心脏瓣膜置换患者应用基于健康行为改变整合理论(integrated theory of health behavior change,ITHBC)健康教育的效果。方法选取2022年7月—2023年6月广西壮族自治区人民医院收治的正中开胸心脏瓣膜置换患者120例,将... 详细信息

目的分析正中开胸心脏瓣膜置换患者应用基于健康行为改变整合理论(integrated theory of health behavior change,ITHBC)健康教育的效果。方法选取2022年7月—2023年6月广西壮族自治区人民医院收治的正中开胸心脏瓣膜置换患者120例,将其根据不同健康教育方式分为对照组(60例,常规健康教育)与观察组(60例,常规健康教育+基于ITHBC理论的健康教育)。2组均干预4个月。比较2组护理的依从性、满意度(干预后),干预前后心理状态、生活质量、自我管理能力。结果观察组各项指标依从率(合理饮食96.67%、定期复诊95.00%、作息规律96.67%、情绪稳定98.33%、按医嘱用药96.67%)均高于对照组(合理饮食86.67%、定期复诊83.33%、作息规律85.00%、情绪稳定86.67%、按医嘱用药86.67%)(P<0.05)。干预后,观察组满意度高于对照组(P<0.05)。相较于干预前,2组干预后的焦虑自评量表(self-rating anxiety scale,SAS)、抑郁自评量表(self-rating depression scale,SDS)评分、生活质量各项评分降低,且组间进行对比,观察组较低(P<0.05)。干预后,2组自我管理能力各项评分均升高,且观察组较对照组低(P<0.05)。结论正中开胸心脏瓣膜置换患者应用基于ITHBC理论的健康教育,可有助于提高患者依从性,改善生活质量,增强自我管理能力,消除不良情绪,进而获得患者认可,且有助于为临床改善正中开胸心脏瓣膜置换患者预后提供参考及依据。

关键词：心脏瓣膜置换健康行为改变整合理论健康教育生活质量心理状态自我管理能力

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Numerical simulation of the three-dimensional flow-path in a ram-rotor

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航空动力学报 2010年第6期25卷 1358-1365页

作者： HAN Ji-ang zHONG Jing-jun YAN Hong-ming Marine Engineering College Dalian Maritime UniversityDalian 116026China School of Energy Science and Engineering Harbin institute of TechnologyHarbin 150001China

A kind of three-dimensional flow-path of the ram-rotor was designed in this paper according to the design method of the typical supersonic intake of aircraft and missiles,especially the design method of the compression ramp,the throat and the subsonic *** design Mach number of the flow-path was based on the averaged relative Mach number,regardless of the change of incoming Mach number along radial direction of the ***,the flowfield of the designed flow-path was simulated numerically with computational fluid dynamics software at design *** purpose of simulation was to obtain the details of the flowfield,including the structure of the shock wave system,position of flow separation zone,and so *** performance of the ram-rotor was also *** numerical results show the structure of the shock wave system in the flow-path is similar to that in the supersonic *** improve the overall performance of the ram-rotor,the reasonable compromise between the total pressure ratio and the isentropic adiabatic efficiency should be *** structure optimization of the flow-path and the configuration of the shock wave system have great influence on the performance of the ram-rotor.

关键词： ram-rotor flow-path supersonic intake numerical simulation design point

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人工智能在肝癌立体定向放疗临床教学中的应用

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中国继续医学教育 2024年第10期16卷 158-164页

作者：闫伟伟刘小亮黄昂解放军总医院第五医学中心肿瘤医学部北京100039 解放军总医院第五医学中心肝病医学部北京100039

立体定向放疗(stereotactic body radiation therapy,SBRT)技术以其精准性和高效率在肝癌的治疗中发挥着日益重要的作用,而相应的临床教学内容却相对单薄,缺乏更新与完善。为了提升肝癌立体定向放疗的临床教学水平,引入了人工智能(artif... 详细信息

立体定向放疗(stereotactic body radiation therapy,SBRT)技术以其精准性和高效率在肝癌的治疗中发挥着日益重要的作用,而相应的临床教学内容却相对单薄,缺乏更新与完善。为了提升肝癌立体定向放疗的临床教学水平,引入了人工智能(artificial intelligence,AI)技术。首先,AI可以辅助更精确地筛选适合SBRT治疗的肝癌患者;其次,AI可以根据历史治疗数据和最新的临床研究,提供联合治疗方案的最佳组合;此外,AI还可以通过深度学习算法完善靶区的自动勾画及优化物理计划,确保治疗效果的最大化;最后,AI能够通过分析系统数据,预测放射性肝损伤风险,为临床医生提供更为合理的治疗建议。因此,人工智能技术的引入,不仅提高了肝癌立体定向放疗的临床效果,同时也为教学内容的丰富性和前瞻性提供了强大支持,有望在促进临床教学创新的同时,改善肝癌患者的治疗结果。

关键词：肝癌人工智能深度学习立体定向放疗预后临床教学

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Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Physics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen M.L.Chen S.J.Chen S.L.Chen S.M.Chen T.Chen X.R.Chen X.T.Chen Y.B.Chen Y.Q.Chen z.J.Chen z.Y.Chen S.K.Choi X.Chu G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng K.Fischer M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao Y.N.Gao yang Gao S.Garbolino I.Garzia P.T.Ge z.W.Ge C.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du z.H.Duan P.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou X.T.Hou Y.R.Hou z.L.Hou B.Y.Hu H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.H\"olzken N.H\"usken N.in der Wiesche M.Irshad J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.B.Li H.J.Li H.N.Li Hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Y.Li Y Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China Central South University Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China University of Geosciences Wuhan 430074China Chung-ang University Seoul06974Republic of Korea COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Science and Technology Luoyang 471003China Henan University of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis CP-even fraction

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Fast frequency-domain equalization for single-carrier V-BLAST systems over multipath channel

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Science in China(Series F) 2009年第1期52卷 115-125页

作者： FENG ang YIN QinYe FAN JianCun School of Electronics and Information Engineering Xi'an Jiaotong University Xi'an 710049 China

A low complex minimum mean-square error frequency-domain decision feedback （MMSE-FDDF） equalization algorithm is proposed in this paper for the single-carrier V-BLAST systems. Exploiting the factor that the discrete Fourier transform （DFT） is unitary, the proposed receiver can equalize the signals by the MMSE detecting to the spectrums in the frequency domain instead of the waveforms in the time domain. In order to obtain the right decisions, the detector must be able to equalize the overall spectrum with regard to each layer. This work can be performed very efficiently since the system matrix has been designed as a special block-circulant-block matrix. Similar to other V-BLAST-like systems, the detecting order has strong impact on the performance of MMSE-FDDF. Therefore, we further give a fast optimally sorting scheme for the MMSE-FDDF architecture. By using the newly constructed matrix, the coefficients computation and the sorting can be combined into one process, and then we employ the modified Gram-Schmidt （MGS） to simplify the process. The simulation results and the computational complexity analysis show that the proposed MMSE-FDDF has better tradeoff between the performance and the complexity than the existing algorithms. In addition, MMSE-FDDF can avoid the performance floor caused by the overlap-and-save technique in the severe dispersive channel.

关键词： single-carrier orthogonal frequency division multiplexing frequency domain equalization V-BLAST ordering Cholesky decomposition

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Unravelling the enhanced vaccine immunity by heterologous KCONVAC/Ad5-nCoV COVID-19 vaccination

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Signal Transduction and Targeted Therapy 2022年第8期7卷 2680-2682页

作者： Weijun zhao Huajun zhao Baoying Huang Tongyi zhao Limei Wang Jian z.ang Yong yang Xinying Tang Wenjie Tan ang Lin Vaccine Center School of Basic Medicine and Clinical PharmacyCenter for New Drug Safety Evaluation and ResearchChina Pharmaceutical UniversityNanjingChina Institute of Immunopharmaceutical Sciences School of Pharmaceutical SciencesAdvanced Medical Research InstituteShandong UniversityJinanChina NHC Ley Laboratory of Biosafety National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina

Dear Editor,Growing evidence has indicated that heterologous COVID-19 vaccination could generate higher antibody(Ab)and cellmediated immune(CMI)responses than homologous vaccination regimen.1–3 However,fundamental understanding of immunological mechanisms dictating the enhanced vaccine immunity is still *** gain mechanistic insights,we comprehensively profiled the immune responses generated by homologous or heterologous booster vaccination in mice(Fig.1a).

关键词： immunity vaccination COV

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