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用CMD-3谱仪研究VEpp-2000对撞机上的e^+e^-→K^+K^-η过程（英文）

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中国科学技术大学学报 2016年第6期46卷 502-506页

作者： IVANOV V.L. AMIRKHANOV A.N. ANISENKOV A.V. AULCHENKO V.M. BANZAROV V.S. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAgIN A.V. EIDELMAN S.I. EpIFANOV D.A. EpSHTEYN L.B. EROFEEV A.L. FEDOTOVICH g.V. gAYAZOV S.E. gREBENUK A.A. gRIBANOV S.S. gRIgORIEV D.N. IgNATOV F.V. KARpOV S.V. KAZANIN V.F. KOROBOV A.A. KOVALENKO O.A. KOZYREV A.N. KOZYREV E.A. KROKOVNY p.p. KUZMENKO A.E. KUZMIN A.S. LOgASHENKO I.B. LUKIN p.A. MIKHAILOV K.YU. OKHApKIN V.S. pESTOVY U.N. pOpOV A.S. razuvaev g.p. RUBAN A.A. RYSKULOV N.M. RYZHENENKOV A.E. SHEBALIN V.E. SHEMYAKIN D.N. SHWARTZ B.A. SIBIDANOV A.L. SHATUNOVY U.M. SOLODOV E.p. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I. YUDINY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

报道了用CMD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CMD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模... 详细信息

报道了用CMD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CMD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模式,选出的事例总数为1454±48.测量的截面近似为Ф(1680)和非共振振幅按照矢量介子主导模型的叠加,并得到了Ф(1680)介子共振参数的初步结果.

关键词：强子信号/本地分离截面

CMD-3实验π介子形状因子的初步结果（英文）

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中国科学技术大学学报 2016年第4期46卷 323-330页

作者： AKHMETSHIN R.R. AMIRKHANOV A.N. ANISENKOV A.V. AULCHENKO V.M. BANZAROV V.Sh. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAgIN A.V. FEDOTOVICH g.V. EIDELMAN S.I. EpIFANOV D.A. EpSHTEYN L.B. EROFEEV A.L. gAYAZOV S.E. gREBENUKV A.A. gRIBANOVV S.S. gRIgORIEV D.N. IgNATOV F.V. IVANOV V.L. KARpOV S.V. KAZANIN V.F. KHAZIN B.I. KOOp I.A. KOROBOV A.A. KOVALENKO O.A. KOZYREV A.N. KOZYREV E.A. KROKOVNY p.p. KUZMENKO A.E. KUZMIN A.S. LOgASHENKO I.B. LUKIN p.A. MIKHAILOV K.Yu. OKHApKIN V.S. pESTOV Yu.N. pOpOV A.S. razuvaev g.p. RUBAN A.A. RYSKULOV N.M. RYZHENENKOV A.E. SHEBALIN V.E. SHWARTZ B.A. SHWARTZ D.B. SIBIDANOV A.L. SHATUNOV Yu.M. SOLODOV E.p. SHEMYAKIN D.N. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I. YUDIN Yu.V. 布德克尔核物理研究所新西伯利亚州立大学新西伯利亚州立理工大学悉尼大学物理学院

自2010年12月起,坐落在正负电子对撞机VEpp-2000上的CMD-3探测器成功取数.2013年首次在对撞能量小于1geV能区进行扫描,并获取积分亮度为18pb-1的数据.本文给出了e^+e^-→π^+π^-截面的初步结果.

关键词： π介子形状因子正负电子对撞机强子截面

VEpp-2000 e^+e^-对撞机上用CMD-3谱仪研究1004-1060 MeV能区的e^+e^-→K■过程（英文）

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中国科学技术大学学报 2016年第6期46卷 507-513页

作者： KOZYREV E.A. AMIRKHANOV A.N. ANISENKOV A.V. M.AULCHENKO V. BANZAROV V.S. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAgIN A.V. EIDELMAN S.I. A.EpIFANOV D. EpSHTEYN L.B. EROFEEV A.L. FEDOTOVICH g.V. gAYAZOV S.E. gREBENUK A.A. gRIBANOV S.S. gRIgORIEV D.N. IgNATOV F.V. IVANOV V.L. KARpOV S.V. KASAEV A.S. KAZANIN V.F. IRpOTIN A.N. KOROBOV A.A. KOVALENKO O.A. KOZYREV A.N. KOOp I.A. KROKOVNY p.p. KUZMENKO A.E. KUZMIN A.S. LOgASHENKO I.B. LUKIN p.A. MIKHAILOV K.YU. OKHApKIN V.S. OTBOEV A.V. pESTOVY U.N pOpOV A.S. razuvaev g.p. RUBAN A.A. RYSKULOV N.M. RYZHENENKOV A.E. SENCHENKO A.I. SHEBALIN V.E. SHEMYAKIN V.E. SHWARTZ A.S. SHWARTZ D.B. SIBIDANOV A.L. SHATUNOV p.YU. SHATUNOVY U.M. SOLODOV E.p. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I. YUDINY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在质心能量1004-1060Me V之间的25个能量点测量了e^+e^-→K_S^0+K_L^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEpp-2000e^+e^-对撞机上CMD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其... 详细信息

在质心能量1004-1060Me V之间的25个能量点测量了e^+e^-→K_S^0+K_L^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEpp-2000e^+e^-对撞机上CMD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其激发态按照矢量介子主导模型的叠加,得到了Ф(1020)介子的共振参数.

关键词：强子正负电子对撞机介子形状因子

VEpp-2000 e^+e^-对撞机上用CMD-3探测器测量e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-的截面（英文）

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中国科学技术大学学报 2016年第6期46卷 514-522页

作者： pOpOV A.S. AKHMETSHIN R.R. AMIRKHANOV A.N. ANISENKOV A.V. AULCHENKO V.M. BANZAROV V.S. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAgIN A.V. EIDELMAN D.E. EpIFANOV D.A. EpSHTEYN L.B. EROFEEV A.L. FEDOTOVICH g.V. gAYAZOV S.E. gREBENUK A.A. gRIBANOV S.S. gRIgORIEV D.N. gROMOV E.M. IgNATIN F.V. IVANOV V.L. KARpOV S.V. KASAEV A.S. KORpOTIN A.N. KOOp I.A. KOVALENKO O.A. KAZANIN V.F. KOZYREV A.N. KOZYREV E.A. KROKOVNY p.p. KUZMENKO A.E. KUZMIN A.S. LOgASHENKO I.B. LIKIN p.A. MIKHAILOV K.YU. OKHApKIN V.S. OTBOEV A.V. pESTOVY U.N. pIVOVAROV S.g. razuvaev g.p. ROMANOV A.L. RUBAN A.A. RYSKULOV N.M. RYZHENENKOV A.E. SHEBALIN V.E. SHEMYAKIN D.N. SHWARTZ B.A. SHWARTZ D.B. SIBIDANLOV A.L. SHATUNOV p.YU. SHATUNOVY U.M. SOLODOV E.p. TITOV V.M. TALYSHEV A.A. VOROBIOV A.I.. YUDINY U.V. ZHARINOVY U.M. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学东京大学物理系国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在VEpp^-2000e^+e^-对撞机上,CMD^-3探测器研究了e^+e^-→ηπ^+π^-→γγπ^+π^-,e^+e^-→ηπ^+π^-→π0π^+π^-π^+π^-以及e^+e^-→ωπ^+π^-→π0π^+π^-π^+π^-等过程.分析使用的是2011和2012年在1.2^-2.0ge V能区收集的相应积分亮度为3×104nb^-1的数据.用η→γγ道测量了e^+e^-→ηπ^+π^-的波恩截面,结果与相关的实验结论相吻合;还用末态η→π^+π^-π0和ω→π^+π^-π0分别得到了e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-波恩截面的初步结果;e^+e^-→ηπ^+π^-波恩截面的数值还被用于确定τ^-→ηπ^-π0ντ的衰变分支比.

关键词：截面 ηπ+π- ωπ+π- 强子 τ

Heterogeneity of mature oligodendrocytes in the central nervous system

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Neural Regeneration Research 2025年第5期20卷 1336-1349页

作者： Chao Weng Adam M.R.groh Moein Yaqubi Qiao-Ling Cui Jo Anne Stratton g.R.Wayne Moore Jack p.Antel Neuroimmunology Unit Montreal Neurological Institute-HospitalDepartment of Neurology and NeurosurgeryMcGill UniversityMontrealQCCanada Department of Neurology Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

Mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous *** evidence has challenged the classical view of the functionally static mature oligodendrocyte and revealed a gamut of dynamic functions such as the ability to modulate neuronal circuitry and provide metabolic support to *** the recognition of potential heterogeneity in mature oligodendrocyte function,a comprehensive summary of mature oligodendrocyte diversity is *** delve into early 20th-century studies by Robertson and Río-Hortega that laid the foundation for the modern identification of regional and morphological heterogeneity in mature ***,recent morphologic and functional studies call into question the long-assumed homogeneity of mature oligodendrocyte function through the identification of distinct subtypes with varying myelination ***,modern molecular investigations,employing techniques such as single cell/nucleus RNA sequencing,consistently unveil at least six mature oligodendrocyte subpopulations in the human central nervous system that are highly transcriptomically diverse and vary with central nervous system *** and disease related mature oligodendrocyte variation denotes the impact of pathological conditions such as multiple sclerosis,Alzheimer's disease,and psychiatric ***,caution is warranted when subclassifying mature oligodendrocytes because of the simplification needed to make conclusions about cell identity from temporally confined *** studies leveraging advanced techniques like spatial transcriptomics and single-cell proteomics promise a more nuanced understanding of mature oligodendrocyte *** research avenues that precisely evaluate mature oligodendrocyte heterogeneity with care to understand the mitigating influence of species,sex,central nervous system region,age,and disease,

关键词： aging central nervous system diseases electron microscopy heterogeneity immunohistochemistry myelin sheath natural history neuroglia oligodendroglia single-cell gene expression analysis

Microstructures and Mechanical properties of Al/Mg Alloy Multilayered Composites produced by Accumulative Roll Bonding

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Journal of Materials Science & Technology 2011年第1期27卷 15-21页

作者： H.S. Liu B. Zhang g.p. Zhang Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education School of Materials & Metallurgy Northeastern University Shenyang 110004 China

Al/Mg alloy multilayered composites were produced successfully at the lower temperature（280 C） by accumulative roll bonding（ARB） processing *** microstructures of Al and Mg alloy layers were characterized by scanning electron microscopy and transmission electron *** hardness and three-point bending tests were conducted to investigate mechanical properties of the *** is found that Vickers hardness,bending strength and stiffness modulus of the Al/Mg alloy multilayered composite increase with increasing the ARB *** and crack propagation along the interface are the two main failure modes of the multilayered composite subjected to bending *** and fracture mechanisms of the composite are analyzed.

关键词： Accumulative roll bonding(ARB) Al/Mg alloy multilayered composite Ultra-fine grains Hardness Bending.p.operties

Climate Change in Scotland： Impact on Mini-Hydro

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Small Hydro power News 2006年第2期23卷 15-20页

作者： g.p. Harrison University of Edinburgh United Kingdom

UK government targets for renewable energy and the new Renewable Obligations suggest a renewed interest in mini-hydropower. However, changes in climate and, in particular precipitation, have been shown to significantly alter the quantity and distribution of river flows. Furthermore, these changes have been shown to impact on the production and, consequently, the economics of large hydropower schemes. The literature highlights that the sensitivity of roduction to changes in climate increases significantly as the amount of storage declines. given that run-of-river mini-hydropower schemes have little or no storage they may be particularly vulnerable to the changes in river flow quantity and distribution that result from climate change. To assess the threat, a simple software model has been developed that enables an examination of the sensitiy of mini-hydro production and economics to climate change. A possible low-head scheme located in the Scottish Borders is used as a case study. The impact of altered precipitation and temperature on river flows, production and project economics are examined. Consideration is also given to the potential and desirability for making the project more climatically robust.

关键词：苏格兰气候变化小水电水电工程

Stepping up after spinal cord injury:negotiating an obstacle during walking

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Neural Regeneration Research 2025年第7期20卷 1919-1929页

作者： Alain Frigon Charly g.Lecomte Department of pharmacology-physiology Faculty of Medicine and Health SciencesUniversitéde SherbrookeCentre de recherche du Centre Hospitalier Universitaire de SherbrookeSherbrookeQCCanada

Every day walking consists of frequent voluntary modifications in the gait pattern to negotiate *** spinal cord injury,stepping over an obstacle becomes *** over an obstacle requires sensorimotor transformations in several structures of the brain,including the parietal cortex,premotor cortex,and motor *** information and planning are transformed into motor commands,which are sent from the motor cortex to spinal neuronal circuits to alter limb trajectory,coordinate the limbs,and maintain *** spinal cord injury,bidirectional communication between the brain and spinal cord is disrupted and animals,including humans,fail to voluntarily modify limb trajectory to step over an ***,in this review,we discuss the neuromechanical control of stepping over an obstacle,why it fails after spinal cord injury,and how it recovers to a certain extent.

关键词： biomechanics locomotion neurophysiology obstacle negotiation spinal cord injury

EFFECT OF pREDEFORMATION MANNER ON SEMI-SOLID STRUCTURE OF AZ61 MAgNESIUM ALLOY IN SIMA pROCESS

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Acta Metallurgica Sinica(English Letters) 2008年第3期21卷 197-204页

作者： g.p. Chen T.R. Zhou H. Yan School of Mechanical and Electrical Engineering Nanchang University Nanchang 330000 China School of Mechanical Engineering Hunan Industrial University Zhuzhou 412008 China

The effect of predeformation manner, predeformation ratio and isothermal heat-treat parameter on the non-dendrite structure of AZ61 magnesium alloy in SIMA process was studied. Under coequal heat-treat condition, the impact of the hot upsetting.p.e- deformation on semi-solid microstructure in SIMA process was compared with that of the cold compressive predeformation. The results indicate that non-dendrite microstructure in AZ61 magnesium alloy billets can be obtained by hot or cold upsetting.p.edeformation in SIMA process, although their mechanisms of evolution are different. Increasing hot or cold upsetting.p.edeformation ratio can enhance the effect and quality of the non-dendrite microstructure formed before storage energy up to saturation, but the proper isothermal temperature and holding time should be selected.

关键词： AZ61 magnesium alloy Strain-induced melt activated (SIMA) Hot and cold upsetting predeformation Non-dendrite structure