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The FAST all sky HI survey(FASHI):The first release of catalog

Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 112-133页

作者： Chuan-Peng Zhang Ming Zhu Peng Jiang Cheng Cheng Jing Wang Jie Wang Jin-Long Xu Xiao-Lan Liu Nai-ping yu Lei Qian Haiyang yu Mei Ai Yingjie Jing Chen Xu Ziming Liu Xin Guan Chun Sun Qingliang Yang Menglin Huang Qiaoli Hao FAST Collaboration Guizhou Radio Astronomical Observatory Guizhou UniversityGuiyang 550000China National Astronomical Observatories Chinese Academy of Sciences(CAS)Beijing 100101China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China

The FAST All Sky HI survey(FASHI)was designed to cover the entire sky observable by the Five-hundred-meter Aperture Spherical radio Telescope(FAST),spanning approximately 22000 square degrees of declination between-14°and+66°,and in the frequency range of 1050-1450 MHz,with the expectation of eventually detecting more than 100000 HI sources.Between August 2020 and June 2023,FASHI had covered more than 7600 square degrees,which is approximately 35%of the total sky observable by FAST.It has a median detection sensitivity of around 0.76 m Jy beam-1and a spectral line velocity resolution of~6.4 km s-1at a frequency of~1.4 GHz.As of now,a total of 41741 extragalactic HI sources have been detected in the frequency range 1305.5-1419.5 MHz,corresponding to a redshift limit of z■0.09.By cross-matching FASHI sources with the Siena Galaxy Atlas(SGA)and the Sloan Digital Sky Survey(SDSS)catalogs,we found that 16972(40.7%)sources have spectroscopic redshifts and 10975(26.3%)sources have only photometric redshifts.Most of the remaining 13794(33.0%)HI sources are located in the direction of the Galactic plane,making their optical counterparts difficult to identify due to high extinction or high contamination of Galactic stellar sources.Based on current survey results,the FASHI survey is an unprecedented blind extragalactic H I survey.It has higher spectral and spatial resolution and broader coverage than the Arecibo Legacy Fast ALFA Survey(ALFALFA).When completed,FASHI will provide the largest extragalactic HI catalog and an objective view of HI content and large-scale structure in the local universe.

关键词： surveys redshifts galaxies telescope radio lines HI line

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Giant electrocaloric effect in BiFeO_(3) and La codoped PbZr_(0.7)Ti_(0.3)O_(3) epitaxial thin films in a broad temperature range

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Journal of Materiomics 2022年第1期8卷 156-165页

作者： Miaomiao Zhang Laijun Liu Rusen Yang ping yu Qi Zhang Biaolin Peng Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials Center on Nanoenergy ResearchGuangxi UniversityNanning530004China Guangxi Key Laboratory of Optical and Electronic Materials and Devices Guilin University of TechnologyGuilin541004China School of Advanced Materials and Nanotechnology Xidian UniversityXi'an710126China College of Material Science and Engineering Sichuan UniversityChengdu610064China BCMaterials Basque Centre for MaterialsApplications and NanostructuresUPV/EHU Science Park48940LeioaSpain IKERBASQUE Basque Foundation for SciencePlaza Euskadi5Bilbao48009Spain

Ferroelectric thin/thick films with large electrocaloric(EC)effect are critical for solid state cooling technologies.Here,large positive EC effects with two EC peaks in a broad temperature range(~100 K)were obtained in 0.95Pb_(0.92)La_(0.08)(Zr_(0.70)Ti_(0.30))_(0.98)O_(3)-0.05BiFeO_(3)(BFO-La-codoped PZT)epitaxial thin films deposited on the(100),(110)and(111)oriented SrTiO_(3)(STO)substrates by a sol-gel method.The thin film deposited on the(111)oriented STO substrate exhibited a stronger EC effect(~20.6 K at 1956 kV/cm)near room temperature.However,the thin films deposited on the(100)and(110)oriented STO substrates exhibited a stronger EC effect(~18.8 K at 1852 kV/cm and~20.8 K at 1230 kV/cm,respectively)around the peak of the dielectric permittivity(T_(m),~375 K).Particularly,as the direction of the applied electric field was switched(E<0),the DT of the(100)-oriented thin films around T_(m) was enhanced significantly from 18.8 K to 38.1 K.The self-induced-poling during the preparing process maybe plays a key role on the magic phenomenon.It can be concluded that the BFO-La-codoped PZT epitaxial thin films are promising candidates for application in the next solid-state cooling devices.

关键词： Sol-gel Epitaxial thin film Electrocaloric effect Self-induce-poled

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说“象”:中华民族舞蹈原始发生蠡测续说(二)

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民族艺术研究 2024年第3期37卷 40-48页

作者：于平南京艺术学院舞蹈学院江苏南京210013

“象”是中华民族舞蹈原始发生中的一种文化存在。《象舞》是周代一个比较重要的祭祀舞蹈。作为周公纪功乐舞的《象》又称《象箾》,《象》的“以箾为仪”指向《易》的“象也者像也”。汉代宫廷中有一种专职艺人称为“象人”,“象人”的... 详细信息

“象”是中华民族舞蹈原始发生中的一种文化存在。《象舞》是周代一个比较重要的祭祀舞蹈。作为周公纪功乐舞的《象》又称《象箾》,《象》的“以箾为仪”指向《易》的“象也者像也”。汉代宫廷中有一种专职艺人称为“象人”,“象人”的“蒙假面”与“方相氏”的“相人”之意均与丧葬事宜相关。荀子《非相》的义理积淀于“偶人”的形制和“面具”的图式之中;张衡《西京赋》的“舞像”更指向整体的“舞者”——其中的汉之“戏象”一词,正是从“戏倡舞像”中点化而来,而“戏倡舞像”本自“尸礼废而像事兴”。由“象人”与偶、与俑、与傀儡的关联一直联系到“傀儡戏”,显然已远离周公的纪功乐舞《象》,也无关乎《荀子·儒教》所言,“戏象”之说显然是从“舞象”一词演变而来的。

关键词：象象舞象人中华民族舞蹈原始发生

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莱博维奇对《资本论》需要逻辑的重构与反思

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理论视野 2024年第1期287卷 90-96页

作者：于萍天津大学马克思主义学院

莱博维奇从工人和工人阶级的政治经济学出发,重构了《资本论》及其手稿中的需要逻辑,工人发展的需要将超越资本对需要的限制,从而实现需要的解放与人的全面发展。莱博维奇坚持对马克思主义的整体性研究,将工人的需要逻辑视为对资本逻辑... 详细信息

莱博维奇从工人和工人阶级的政治经济学出发,重构了《资本论》及其手稿中的需要逻辑,工人发展的需要将超越资本对需要的限制,从而实现需要的解放与人的全面发展。莱博维奇坚持对马克思主义的整体性研究,将工人的需要逻辑视为对资本逻辑的有益补充,这是值得肯定的。但是,他对《资本论》存在着片面性解读,割裂了资本逻辑与需要逻辑、客观逻辑与主观逻辑、异化逻辑与解放逻辑的辩证统一关系,他对需要的重要性又过分扩大,从而背离了唯物史观。

关键词：《资本论》需要逻辑马克思莱博维奇

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说“扭”:中华民族舞蹈原始发生蠡测续说(一)

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民族艺术研究 2024年第2期37卷 129-139页

作者：于平南京艺术学院舞蹈学院江苏南京210013 北京市文联

“扭”,作为秧歌舞蹈中最显著的动态特征及其律动根源,是中华民族舞蹈原始发生值得关注并应当探求的一种文化现象。从陕北秧歌的“扭摆走”到东北秧歌的“稳中浪”,从胶州秧歌的“翠花扭三步”到安徽花鼓灯的兰花“三掉腰”等,不同地域... 详细信息

“扭”,作为秧歌舞蹈中最显著的动态特征及其律动根源,是中华民族舞蹈原始发生值得关注并应当探求的一种文化现象。从陕北秧歌的“扭摆走”到东北秧歌的“稳中浪”,从胶州秧歌的“翠花扭三步”到安徽花鼓灯的兰花“三掉腰”等,不同地域的秧歌、花鼓灯舞蹈,由于不同动态的参与,“扭”得异彩纷呈。然而各地秧歌中“扭”的成因却不尽相同:“兰花”舞蹈之“扭”的直接成因是“女子缠足”习俗,东北秧歌的“浪”是高跷舞蹈对“扭”的极大夸饰,冀东地秧歌“拉骨抻筋”呈现出“扭”的复杂形态,山东鼓子秧歌“花子”的舞式之“扭”强化了舞动之“扭”。在“视觉格式塔”视域中的秧歌舞蹈“绕菠花”“扭场子”,是“扭秧歌”的最高境界,在某种意义上可视为没有持举龙形道具的“龙舞”。目前的秧歌舞蹈主要存在于北方“旱作文化”之中,走出“水田”去探求“秧歌”与“稷神”的关系,会获得一些有益的启示。

关键词：扭秧歌中华民族舞蹈原始发生

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从“两汉析舞”到“甲骨寻舞”——彭松中国古代舞蹈史研究取向述评

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南京艺术学院学报（音乐与表演版） 2024年第2期 157-173页

作者：于平南京艺术学院舞蹈学院江苏南京210013

彭松(1916—2016)是我国著名古代舞蹈史研究家。在新中国首部《中国古代舞蹈史》编著中,彭松执笔“秦汉、三国、两晋、南北朝”部。也就是说,在中国古代舞蹈的通史研究中,“两汉舞蹈”是他的研究主场。为此,他在汉赋、乐府诗与汉画像的... 详细信息

彭松(1916—2016)是我国著名古代舞蹈史研究家。在新中国首部《中国古代舞蹈史》编著中,彭松执笔“秦汉、三国、两晋、南北朝”部。也就是说,在中国古代舞蹈的通史研究中,“两汉舞蹈”是他的研究主场。为此,他在汉赋、乐府诗与汉画像的融通研究中取得了骄人的成就。接着,他借“敦煌舞”之题拓展出“隋唐舞蹈”研究的新想象——不仅揭示出《西凉伎》与“敦煌舞”的文脉关联,而且从日本“唐舞图”和朝鲜“李朝宴乐”探寻唐、宋舞蹈在流变中的内质。再接着,他聚焦周代《大武》舞去探讨中国古代史诗性歌舞剧的叙事策略和诗、乐、舞结构。最后,他以“古稀”之龄倾力“甲骨寻舞”,留下了许多有价值的成果和有启迪的思路。

关键词：彭松中国古代舞蹈史敦煌舞《大武》舞甲骨卜辞舞蹈

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知识理解到素养发展的教学实践理路

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教学与管理 2024年第10期 1-6页

作者：喻平南京师范大学课程与教学研究所南京210097

随着课程标准的颁布,新课程进入全面实施阶段。由于课程目标的重新定位,教学方式必然发生相应的变革。指向核心素养培育的教学逻辑,应当从知识讲解到知识理解的线性模型转向从知识理解到素养提升的多维模型。在这个多维模型中,嵌入知识... 详细信息

随着课程标准的颁布,新课程进入全面实施阶段。由于课程目标的重新定位,教学方式必然发生相应的变革。指向核心素养培育的教学逻辑,应当从知识讲解到知识理解的线性模型转向从知识理解到素养提升的多维模型。在这个多维模型中,嵌入知识探究与建构、知识的迁移应用、知识的创新应用三个环节,使发展学生核心素养的目标得以实现。教学实施的基本路径是:营造知识探究与建构的学习场域,构建知识的迁移应用活动环境,开拓知识的创新应用探索空间。

关键词：知识理解素养发展核心素养教学逻辑课程实施关键词

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Dimensionality-driven metal to Mott insulator transition in two-dimensional 1T-TaSe2

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National Science Review 2024年第3期11卷 108-118页

作者： Ning Tian Zhe Huang Bo Gyu Jang Shuaifei Guo Ya-Jun Yan Jingjing Gao Yijun yu Jinwoong Hwang Cenyao Tang Meixiao Wang Xuan Luo yu ping Sun Zhongkai Liu Dong-Lai Feng Xianhui Chen Sung-Kwan Mo Minjae Kim Young-Woo Son Dawei Shen Wei Ruan yuanbo Zhang Advanced Light Source Lawrence Berkeley National Laboratory ShanghaiTech Laboratory for Topological Physics Key Laboratory of Materials Physics Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of Sciences High Magnetic Field Laboratory Hefei Institutes of Physical Science Chinese Academy of Sciences Collaborative Innovation Centre of Advanced Microstructures Nanjing University Department of Physics University of Science and Technology of China and Key Laboratory of Strongly Coupled Quantum Matter Physics Chinese Academy of Sciences National Synchrotron Radiation Laboratory University of Science and Technology of China State Key Laboratory of Surface Physics New Cornerstone Science Laboratory and Department of PhysicsFudan University Shanghai Qi Zhi Institute Shanghai Research Center for Quantum Sciences Institute for Nanoelectronic Devices and Quantum Computing Fudan University Zhangjiang Fudan International Innovation Center Fudan University State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of Sciences School of Physical Science and Technology ShanghaiTech University Korea Institute for Advanced Study School of Emerging Technology and Department of Physics University of Science and Technology of China

Two-dimensional materials represent a major frontier for research into exotic many-body quantum phenomena. In the extreme two-dimensional limit, electron-electron interaction often dominates over other electronic energy scales, leading to strongly correlated effects such as quantum spin liquid and unconventional superconductivity.The dominance is conventionally attributed to the lack of electron screening in the third dimension. Here, we discover an intriguing metal to Mott insulator transition in 1T-TaSe2that defies conventional wisdom. Specifically, we find that dimensionality crossover, instead of reduced screening, drives the transition in atomically thin 1T-TaSe2. A dispersive band crossing the Fermi level is found to be responsible for the bulk metallicity in the material. Reducing the dimensionality,however, effectively quenches the kinetic energy of these initially itinerant electrons, and drives the material into a Mott insulating state.The dimensionality-driven metal to Mott insulator transition resolves the long-standing dichotomy between metallic bulk and insulating surface of 1T-TaSe2. Our work further reveals a new pathway for modulating two-dimensional materials that enables exploring strongly correlated systems across uncharted parameter space.

关键词： two-dimensional materials 1T-TaSe2 dimensionality crossover metal to Mott insulator transition

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Oridonin restores hepatic lipid homeostasis in an LXRa-ATGL/EPT1 axis-dependent manner

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Journal of Pharmaceutical Analysis 2023年第11期13卷 1281-1295页

作者： yulian Chen Huanguo Jiang Zhikun Zhan Jindi Lu Tanwei Gu ping yu Weimin Liang Xi Zhang Shilong Zhong Lan Tang NMPA Key Laboratory for Research and Evaluation of Drug Metabolism Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510515China Department of Pharmacy Guangdong Provincial People's Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou510515China

Hepatosteatosis is characterized by abnormal accumulation of triglycerides(TG),leading to prolonged and chronic inflammatory infiltration.To date,there is still a lack of effective and economical therapies for hepatosteatosis.Oridonin(ORI)is a major bioactive component extracted from the traditional Chinese medicinal herb Rabdosia rubescens.In this paper,we showed that ORI exerted significant protective effects against hepatic steatosis,inflammation and fibrosis,which was dependent on LXRa signaling.It is reported that LXRa regulated lipid homeostasis between triglyceride(TG)and phosphatidylethanolamine(PE)by promoting ATGL and EPT1 expression.Therefore,we implemented the lipidomic strategy and luciferase reporter assay to verify that ORI contributed to the homeostasis of lipids via the regulation of the ATGL gene associated with TG hydrolysis and the EPT1 gene related to PE synthesis in a LXRadependent manner,and the results showed the TG reduction and PE elevation.In detail,hepatic TG overload and lipotoxicity were reversed after ORI treatment by modulating the ATGL and EPT1 genes,respectively.Taken together,the data provide mechanistic insights to explain the bioactivity of ORI in attenuating TG accumulation and cytotoxicity and introduce exciting opportunities for developing novel natural activators of the LXRa-ATGL/EPT1 axis for pharmacologically treating hepatosteatosis and metabolic disorders.

关键词： Oridonin Lipid homeostasis TG reduction PE elevation LXRa-ATGL/EPT1 axis

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Influence of temperature, stress, and grain size on behavior of nano-polycrystalline niobium

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Chinese Physics B 2024年第7期33卷 467-474页

作者：晏玉平张柳亭张丽攀芦刚涂志新 School of Acronautical Manufacturing Engineering Nanchang Hangkong UniversityNanchang 330063China

Atomic simulations are executed to investigate the creep responses of nano-polycrystalline(NC) niobium established by using the Voronoi algorithm. The effects of varying temperature, applied stress, and grain size(GS) on creep properties and mechanisms are investigated. Notably, the occurrence of tertiary creep is exclusively observed under conditions where the applied stress exceeds 4.5 GPa and the temperature is higher than 1100 K. This phenomenon can be attributed to the significant acceleration of grain boundary and lattice diffusion, driven by the elevated temperature and stress levels. It is found that the strain rate increases with both temperature and stress increasing. However, an interesting trend is observed in which the strain rate decreases as the grain size increases. The stress and temperature are crucial parameters governing the creep behavior. As these factors intensify, the creep mechanism undergoes a sequential transformation: initially from lattice diffusion under low stress and temperature conditions to a mixed mode combining grain boundaries(GBs) and lattice diffusion at moderate stress and mid temperature levels, and ultimately leading to the failure of power-law controlled creep behavior, inclusive of grain boundary recrystallization under high stress and temperature conditions. This comprehensive analysis provides in more detail an understanding of the intricate creep behavior of nano-polycrystalline niobium and its dependence on various physical parameters.

关键词： creep behavior molecular dynamics simulation activation energy stress exponent nano-polycrystalline niobium

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