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He-Ar isotope geochemistry of the Yaoling-Meiziwo tungsten deposit,North Guangdong Province:Constraints on Yanshanian crust-mantle interaction and metallogenesis in SE China

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Chinese Science Bulletin 2012年第10期57卷 1150-1159页

作者： ZHAI Wei SUN XiaoMing wu yunshan SUN YanYan HUA RenMin YE XianRen Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Guangzhou 510006 China School of Marine Sciences Sun Yat-sen University Guangzhou 510275 China Department of Earth Sciences Sun Yat-sen University Guangzhou 510275 China Geological Survey Institute of Guangdong Nonferrous Metals Geological Survey Bureau Guangzhou 510080 China State Key Laboratory of Mineral Deposit Research Nanjing University Nanjing 210093 China Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China

Isotopic abundances and ratios of He and Ar found in inclusion fluids in pyrites formed in the Yaoling-Meiziwo tungsten miner-alization epoch show that the concentration of 4He varies widely,from 1.54×10-7 cm3 STP/g to 2609×10-7 cm3 STP/g.3He is 0.759×10-12 cm3 STP/g-3.463×10-12 cm3 STP/g.3He/4He is 0.0043-4.362 Ra,varying from crustal to mantle *** concen-tration of 40Ar ranges from 0.624×10-7 cm3 STP/g to 8.89×10-7 cm3 STP/*** 40Ar/36Ar varies extensively,from 330 to 2952,between atmospheric and crustal or mantle radiogenic ***-derived He is present in ore-forming fluids and the calcu-lated average proportion of the mantle He is 22%;the maximum is 67%.Our research results show that mantle-derived fluids play a significant role in tungsten *** fractionation of He and Ar indicate that there was 4He-enriched air-saturated water(MSAW) in the ore-forming *** ore-forming fluid was a mixture of mantle fluid,crustal magmatic fluid and *** occurrence of a mantle component in ore-forming fluid indicates the large-scale W and Sn mineralization,including Yaol-ing-Meiziwo,in southeastern China was the result of crust and mantle *** underplating or intrusion of voluminous basaltic magma formed by partial melting of the upper mantle provided the necessary heat to cause partial melting of the crust and the generation of voluminous S-type granitic *** magmatic fluid and mantle fluid with high 3He/4He were released from magma crystallization and fractionation,mixed with the circulating modified air-saturated water,and filled the extensional tectonic fractures,leading to the formation of world-class W and Sn deposits in southeastern China.

关键词：中国东南部壳幔相互作用成矿流体同位素地球化学钨矿 Ar 广东省地幔流体

High-efficiency and flexible photonic microwave harmonic down-converter based on self-oscillation optical frequency combs

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Chinese Optics Letters 2024年第6期22卷 196-204页

作者： Xin Zhang Tao Pu Huatao Zhu yunshan Zhang Gengze wu Jin Li Jilin Zheng College of Information and Communications National University of Defense TechnologyWuhan 430010China College of Communications Engineering Army Engineering University of PLANanjing 210007China College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210023China

Photonic microwave harmonic down-converters (PMHDCs) based on self-oscillation optical frequency combs (OFCs) are interesting because of their broad bandwidth compared with plain optoelectronic oscillators. In this paper, a high-efficiency and flexible PMHDC is proposed and demonstrated. The properties of the OFC, such as the carrier-to-noise ratio (CNR),bandwidth and free spectral range (FSR), and the influence of optical injection, are investigated. The broadband OFC provides a frequency tunable and high-quality local oscillation (LO), which guarantees flexible down-conversion for the radio frequency (RF) signal. The sideband selective amplification (SSA) effect not only improves the conversion efficiency but also promotes single-sideband modulation. The conversion range can reach 100 GHz. The 12–40 GHz RF signal can be downconverted to intermediate frequency (IF) signals with a high conversion efficiency of 14.9 dB. The fixed 40-GHz RF signal is flexibly down-converted to an IF signal with the frequency from 55.4 to 2129.4 MHz. The phase noise of an IF signal at a frequency offset of 10 kHz is the same as that of the input RF signal. The PMHDC shows great performance and will find applications in radio-over-fiber (RoF) networks, electronic warfare receivers, avionics, and wireless communication systems.

关键词： frequency down-conversion optical frequency comb optical injection optoelectronic oscillation

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基于文化差异的中西真人图书馆比较研究

大学图书馆学报 2014年第5期32卷 34-41页

作者：吴云珊广西师范大学图书馆桂林541004

研究中西文化,从宗旨、选题、借阅、选址4个方面对若干中西真人图书馆进行实证比较,分析比较结果与中西文化之间的联系,得出地域文化差异对真人图书馆有明显影响的结论,同时指出真人图书馆在本土化过程中应重视文化的影响力。

关键词：文化差异真人图书馆活体图书馆中国文化西方文化

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中国化真人图书馆建设的几个关键问题

图书馆建设 2020年第4期 112-117,130页

作者：吴云珊广西师范大学图书馆

为推动真人图书馆在中国健康发展,使其成为"有用有为"的机构,更好地为中国社会服务,在回顾真人图书馆中国化过程的基础上明确"中国化真人图书馆"的概念,肯定建设中国化真人图书馆的意义,并结合具体方案探讨中国化真人图书馆建设的主体... 详细信息

为推动真人图书馆在中国健康发展,使其成为"有用有为"的机构,更好地为中国社会服务,在回顾真人图书馆中国化过程的基础上明确"中国化真人图书馆"的概念,肯定建设中国化真人图书馆的意义,并结合具体方案探讨中国化真人图书馆建设的主体、书源、入藏、分编、流通几个关键问题,得出只要正视问题,坚持理论实践相结合,建设中国化真人图书馆虽"道阻且长",但"行则将至"的结论。

关键词：中国化真人图书真人图书馆活体馆藏公益指数

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中国化真人图书馆需厘清的几个概念和关系

图书馆建设 2021年第5期 91-97页

作者：吴云珊广西师范大学图书馆

为推动中国化真人图书馆有的放矢地发展,结合具体的实例,从理论和应用上厘清中国化真人图书馆和中国的真人图书馆、真人书名和真人姓名、真人馆藏和口述馆藏、真人期刊和真人丛书、真人图书馆的模式特征、真人图书馆概念的内涵等几个含... 详细信息

为推动中国化真人图书馆有的放矢地发展,结合具体的实例,从理论和应用上厘清中国化真人图书馆和中国的真人图书馆、真人书名和真人姓名、真人馆藏和口述馆藏、真人期刊和真人丛书、真人图书馆的模式特征、真人图书馆概念的内涵等几个含糊的概念和关系,得出"厘清真人图书馆的概念和关系对于找到中国化真人图书馆的可持续发展方向至关重要"的结论。

关键词：真人图书真人图书馆中国化真人馆藏口述馆藏真人期刊真人丛书

基于共生学科服务理论的高校元素养教育模式预设

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图书馆学研究 2019年第10期 23-26页

作者：吴云珊广西师范大学图书馆

研究高校元素养教育模式,对于推动高校"信息素养教育"向"元素养教育"转变,提升当代大学生和高校教育工作者的元素养都有着重要意义。运用文献阅读法,对元素养概念进行梳理,对共生学科服务理论进行阐释,并借助图形对共生学科服务理论框... 详细信息

研究高校元素养教育模式,对于推动高校"信息素养教育"向"元素养教育"转变,提升当代大学生和高校教育工作者的元素养都有着重要意义。运用文献阅读法,对元素养概念进行梳理,对共生学科服务理论进行阐释,并借助图形对共生学科服务理论框架下的高校元素养教育模式进行预设,得出共生模式是高校元素养教育优选模式的结论。

关键词：元素养信息素养学科服务情报共生共生学科服务

General theory for designing phonon transport in alloyed/doped materials

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： Chenhan Liu Chao wu Wei Liu yunshan Zhao Gang Zhang Hongmin Yang Yunfei Chen Micro-and Nano-scale Thermal Measurement and Thermal Management Laboratory Key Laboratory of Numerical Simulation for Large Complex Systems Ministry of Education School of Energy and Mechanical Engineering Nanjing Normal University School of Electrical and Automation Engineering Nanjing Normal University Phonon Engineering Research Center of Jiangsu Province Center for Quantum Transport and Thermal Energy Science Institute of Physics Frontiers and Interdisciplinary Sciences School of Physics and Technology Nanjing Normal University Institute of High-Performance Computing Agency for Science Technology and ResearchSingapore Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments School of Mechanical Engineering Southeast University

Alloying/doping is a widely used technique for improving the electrical, mechanical, and optical properties of ***, this technology induces significant distortions in the lattice structure, mass distribution, and potential field, greatly enhancing phonon scattering. Here, we introduce the concept of alloying/doping path and employ crystal symmetry, lattice deformation, and electron distribution to characterize it. Based on this new concept, the phonon thermal transport behavior in alloyed/doped materials can be well designed, and along different alloying/doping paths, the difference in thermal conductivity can be up to 45 times. On one hand, strategic alloying/doping that combines high crystal symmetry, large lattice contraction, and the same electron distribution suppresses phonon-phonon scattering phase space, induces phonon stiffening, and bolsters electronic structure symmetry, respectively. These synergistic effects significantly improve thermal conductivity. On the other hand, random alloying/doping has a low symmetry, leading to the typical “U” shape of alloying/doping level-dependent thermal conductivity. Our theory is corroborated in three-dimensional（3D） Si, 2D MoS2, and quasi-1D TiS3, affirming its efficacy and broad applicability in controlling phonon transport.

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Identified the chemical constituents of Cinnamomum cassia by UPLC-APCI-TOF-MS

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Identified the chemical constituents of Cinnamomum cassia by...

The structure characteristic of natural products and X-ray diffraction analysis

中国化学会第十一届全国天然有机化学学术会议

作者： Qiuxia Yang Fangfang Xu yunshan wu Bo Liu Dean Guo Guangdong Pharmacetuical University The 2nd Affiliated Hospital of Guangzhou University of Chinese Medicine Shanghai Institute of Materia Medica Chinese Academy of Sciences

Objective To analyze and identify the chemical constituents from the methane extract of Cinnamomum cassia, a qualitative analytical method of Ultra liquid chromatography couple with time-of-flight tandem mass spectrometry（UPLC-APCI-TOFMS） was developed. Methods The analysis was performed on an ACQUITY CSH C18 column（100 mm×2.1mm, 2.5 μm）. The mobile phase consisted of acetonitrile and 0.1%formic acid was used for grasient elution, the flow rate was 0.3 m L/min. Time of flightmass spectrometry was applied for the qualitative analysis under positive and negative ion modes and APCI ion source was used for mass spectra. Results The results indicated that 29 compounds from the meathone extract of Cinnamomum cassia had been identified by direct comparison in both positive and negative ion mass data, the element compositions analysis, and the data of the literature. Conclusion The efficient separation ability of UPLC and high sensitive detection of MS are used in this study, which will provide the evidences for evaluating the quality of Cinnamomum cassia herbs, stabilizing the curative effect in clinic, and explaining the mechanism.

关键词： Cinnamomum cassia Presl UPLC-APCI-TOF-MS Chemical constituents

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The structure characteristic of natural products and X-ray d...