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Laser and Fluorescence Properties of Organic Dye DCM Doped Sol-Gel-Derived Solid-State Materials

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journal of Materials Science & Technology 1999年第6期15卷 563-566页

作者： zhang, QY jiang, zh Tongji Univ Pohl Inst Solid State Phys Shanghai 200092 Peoples R China Chinese Acad Sci Shanghai Inst Opt & Fine Mech Shanghai 201800 Peoples R China

Two kinds of new Ormosil xerogels derived from GPTMS (3-glycidyl propyl trimethoxisilane) and TEOS (tetraethoxysilane) or GPTMS and Ti(OBu)4 (tetrabutoxytitanate) were synthesized viathe sol-gel method as dye laser host. Their optical properties, microstructure characteristics and sudece laser damage thresholds have been reported. The effects of dye matrix combination on the fluorescence emission, slope efficiency, photostability and tunable bandwidth were *** oscillation was easily achieved near 620 nm with a slope efficiency of 29% from DCM dopedSiO2-Ormosil pumped by a frequency-doubled radiation from a Q-switched Nd:YAG laser. The laser wavelength was tunable over 59 nm, and the laser output energy had only a 10% reduction after 2.5× 104 pulses at a pump repetition rate of 1Hz and a pump intensity of 1

关键词： GPTMS DCM EtOH

Metrology for sub-Rayleigh-length target positioning in~10^(22)W/cm^(2)laser-plasma experiments

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High Power Laser Science and Engineering 2024年第3期12卷 90-105页

作者： E.A.Vishnyakov A.Sagisaka K.Ogura T.zh.Esirkepov B.Gonzalez-Izquierdo C.D.Armstrong T.A.Pikuz S.A.Pikuz W.Yan T.M.jeong S.Singh P.Hadjisolomou O.Finke G.M.Grittani M.Nevrkla C.M.Lazzarini A.Velyhan T.Hayakawa Y.Fukuda j.K.Koga M.Ishino K.Kondo Y.Miyasaka A.Kon M.Nishikino Y.V.Nosach D.Khikhlukha I.P.Tsygvintsev D.Kumar j.Nejdl D.Margarone P.V.Sasorov S.Weber M.Kando H.Kiriyama Y.Kato G.Korn K.Kondo S.V.Bulanov T.Kawachi A.S.Pirozhkov ELI Beamlines Facility The Extreme Light Infrastructure ERICDolníBrežanyCzech Republic Kansai Institute for Photon Science(KPSI) QSTKyotoJapan Central Laser Facility Rutherford Appleton LaboratorySTFCHarwell OxfordDidcotUK Institute for Open and Transdisciplinary Research Initiatives Osaka UniversityOsakaJapan HB11 Energy Holdings FreshwaterAustralia Key Laboratory for Laser Plasmas(Ministry of Education) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghaiChina Institute of Plasma Physics ASCR PragueCzech Republic FZU-Institute of Physics ASCR PragueCzech Republic Czech Technical University in Prague FNSPEPragueCzech Republic Institute of Laser Engineering Osaka UniversityOsakaJapan Institute of Physics National Academy of Sciences of UkraineKyivUkraine ISTEQ AR YerevanArmenia

Tight focusing with very small f-numbers is necessary to achieve the highest at-focus ***,tight focusing imposes strong demands on precise target positioning in-focus to achieve the highest on-target irradiance We describe several near-infrared,visible,ultraviolet and soft and hard X-ray diagnostics employed in a~10^(22)W/cm^(2)laser±plasma *** used nearly 10 j total energy femtosecond laser pulses focused into an approximately1.3-μm focal spot on 5±20μm thick stainless-steel *** discuss the applicability of these diagnostics to determine the best in-focus target position with approximately 5μm accuracy(i.e.,around half of the short Rayleigh length)and show that several diagnostics(in particular,3ωreflection and on-axis hard X-rays)can ensure this *** demonstrated target positioning within several micrometers from the focus,ensuring over 80%of the ideal peak laser intensity *** approach is relatively fast(it requires 10±20 laser shots)and does not rely on the coincidence of low-power and high-power focal planes.

关键词： laser-plasma interaction precise target positioning spectroscopy ultra-high intensity X-rays

Soliton Transmission over 50Km at 2.5GHz Repetition Rate

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High Technology Letters 1995年第1期1卷 22-24页

作者： Shan, zh. Minyu, Y. Baoxi, X. Caiyun, L. jinghui, L. Xin, j. jiangde, P. Yizhi, G. Binkun, zh. Tsinghua Univ Beijing China

A 2.5 GHz optical soliton transmission over 50km has been successfully achieved’for thefirst time in China by using erbium-doped fiber *** soliton pulse width is *** erbium-doped fiber amplifiers are pumped by InGaAs... 详细信息

关键词： Optical soliton Soliton transmission Soliton communication EDFA

Aequorin-Based Luminescence Imaging Reveals Stimulus-and Tissue-Specific Ca^2＋ Dynamics in Arabidonsis Plants

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Molecular Plant 2013年第2期6卷 444-455页

作者： Xiaohong zh Ying Feng Gaimei Liang Na Liu jian-Kang zhua Department of Horticulture and Landscape Architecture Purdue University West Lafayette IN 47907 USA Shanghai Center for Plant Stress Biology and Shanghai Institute of Plant Physiology and Ecology Shanghai Institutes of Biological Sciences ChineseAcademy of Sciences Shanghai 200032 China

Calcium ion is a versatile second messenger for diverse cell signaling in response to developmental and environmental cues. The specificity of Ca^2＋-mediated signaling is defined by stimulus-elicited Ca^2＋ signature and down-stream decoding processes. Here, an Aequorin-based luminescence recording system was developed for monitoring Ca^2＋ in response to various stimuli in Arabidopsis. With the simple, highly sensitive, and robust Ca^2＋ recording, this system revealed stimulus-and tissue-specific Ca^2＋ signatures in seedlings. Cellular Ca^2＋ dynamics and relationship to Aequorin-based Ca^2＋ recording were explored using a GFP-based Ca^2＋ indicator, which suggested that a synchronous cellular Ca^2＋ signal is responsible for cold-induced Ca^2＋ response in seedlings, whereas asynchronous Ca^2＋ oscillation contributes to osmotic stress-induced Ca^2＋ increase in seedlings. The optimized recording system would be a powerful tool for the iden-tification and characterization of novel components in Ca^2＋ -mediated stress-signaling pathways,

关键词： Aequorin Case12 abiotic stress calcium Arabidopsis.

Fast magnetic energy dissipation in relativistic plasma induced by high order laser modes

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High Power Laser Science and Engineering 2016年第2期4卷 85-89页

作者： Y.j.Gu Q.Yu O.Klimo T.zh.Esirkepov S.V.Bulanov S.Weber G.Korn Institute of Physics of the ASCR Institute of Modern Physics Fudan University FNSPE Czech Technical University in Prague Kansai Photon Science Institute Japan Atomic Energy Agency

Fast magnetic field annihilation in a collisionless plasma is induced by using TEM(1,0) laser pulse. The magnetic quadrupole structure formation, expansion and annihilation stages are demonstrated with 2.5-dimensional particle-in-cell simulations. The magnetic field energy is converted to the electric field and accelerate the particles inside the annihilation plane. A bunch of high energy electrons moving backwards is detected in the current sheet. The strong displacement current is the dominant contribution which induces the longitudinal inductive electric field.

关键词： high order laser mode laser–plasma interaction magnetic annihilation

Room-temperature deposition of yttria-stabilized zirconia buffer layer on metallic substrates by laser ablation

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Chinese Science Bulletin 1997年第16期42卷 1345-1350页

作者： Xiong, XM zhou, YL Chen, zh Lu, HB zhu, Aj Cui, DF Wang, HS Yang, GZ Chinese Acad Sci Inst Phys Lab Opt Phys Beijing 100080 Peoples R China Chinese Acad Sci Ctr Condensed Matter Phys Beijing 100080 Peoples R China

THE preparation of high-temperature superconducting (HTSC) wires or tapes is very important for the power application of HTSC. High-j_c properties of Y-Ba-Cu-O thin film at liq uid-nitrogen temperature are very attractive not only for small-sized electronic devices, but also for large-scale applications such as high-power transmission cables, high-field magnets and large-scale microwave components. Large-current power application would be achieved if high-j_c YBCO films were grown on practical cheap and flexible metallic substrates. An yttria-stabi-

关键词： YSZ low temperature PLD buffer layer metal substrate.

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从消费税的设置目的谈我国消费税改革

消费经济 2005年第2期21卷 31-33页

作者：何志静暨南大学经济学院广东广州510632

我国现行的消费税是1994年税改设置的税种,设置目的是为调节产品结构、引导消费方向、保证国家收入。经过十多年的经济发展,我国的现行消费税制在一些方面已经与其设置目的不相符,这就要求我们对现行的消费税制进行改革,更好的发挥消费... 详细信息

我国现行的消费税是1994年税改设置的税种,设置目的是为调节产品结构、引导消费方向、保证国家收入。经过十多年的经济发展,我国的现行消费税制在一些方面已经与其设置目的不相符,这就要求我们对现行的消费税制进行改革,更好的发挥消费税的特殊调节作用。

关键词：消费税设置目的改革中国课税范围税率

INVESTIGATION OF THE EFFECT OF TEMPERATURES ONTENSILE LOAD DROPS OF TITANIUM ALLOY

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Acta Metallurgica Sinica(English Letters) 1997年第3期10卷 198-202页

作者： Z zhang zh Tu L.F. Li L.Z. zhaoand D. jin (Cryogenic Laboratory Chinese Acaderw of Sciences, Beijing 100080, China )H.j Lu (Beijing Institute of Aerospace Materials and Technology, Beijing 100076, China) Cryogenic Lab Chinese Acad of Sciences Beijing China

Low temperature may greatly affect the mechanical properties of materials. Some in-teresting mechanical phenomena were detected at very low temperature. In this study,a multi-sample tensile installation was designed to study the plastic deformation be-havior for Ti-5Al-2.5Sn extra-low-interstitial (ELI) alloy at liquid helium *** special geometrical instability phenomena in low temperature, serrated deforma-tion and multi necking, was studied in detail in this project. Slip and twinning were determined in the process of plastic fiow by SEM/TEM analysis. Efficts of temper-ature and sequential straining on load drops in tensile stress-strain curves were also studied. Optical measurement method was used to gauge the geometrical characteristic of multi-necking specimens. The sensitivity of partial thermoplastic deformation and the equivalency of low tempemture with high velocity of this material were studied by using micro-mechanics *** criterion of geometrical instability has been discussed. A computer simulation of the low temperature instability of plastic fiow in Ti-5Al-2.5Sn ELI alloy has been carried out. A computer model has been established which links the hot dtffusion and the plastic fiow of hcp alloys under assumption that the tempemture is homogeneous within the specimen and that the heat exchange with the thermal bath is the control-ling step in the heat release. The computer simulation of the deformation curves as a function of several mechanincal, geometrical and thermal parameters provides a re-alistic description of the experiments. The experimental data available are discnssed in the light of the computer simulation model.

关键词： mechanical property plastic deformation computer simulation

脊柱融合固定术后相邻节段发生退行性病变的影响因素及植入内固定材料可能带来的影响

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中国组织工程研究与临床康复 2007年第40期11卷 8144-8148页

作者：李忠海赵杰解放军第二一○医院骨科辽宁省大连市116021 解放军第二军医大学长海医院骨科上海市200433

目的:总结并分析脊柱融合术后邻近节段退行性变的病理改变、发生机制、影响因素和防治方法,探讨治疗中应用内固定植入体可能带来的变化。资料来源:应用计算机检索Medline1993-01/2007-03关于脊柱融合固定后邻近节段退行性变的文章。检索... 详细信息

目的:总结并分析脊柱融合术后邻近节段退行性变的病理改变、发生机制、影响因素和防治方法,探讨治疗中应用内固定植入体可能带来的变化。资料来源:应用计算机检索Medline1993-01/2007-03关于脊柱融合固定后邻近节段退行性变的文章。检索词"spinal fusion,instrumentation,adjacent segment degeneration"并限定文章的语言种类为English。同时利用计算机检索中国期刊全文数据库1994-01/2006-12的相关文章,限定文章语言种类为中文,检索词"脊柱融合,固定,邻近节段退行性变"。资料选择:对资料进行初审,纳入标准:①关于脊柱融合固定后邻近节段退行性变的病理改变、发生机制、影响因素和预防治疗。②对具体事件的回顾调查研究。排除标准:重复性研究。资料提炼:共收集到符合上述要求的文献53篇,排除11篇重复性研究。42篇符合纳入标准。资料综合:脊柱融合术后脊柱的运动学发生改变,这些改变可以造成患者术后邻近节段退行性变的发生或加剧患者术前已存在的某些退行性变,主要表现为椎间盘退行性变、节段性失稳、关节突肥大性骨关节炎、髓核突出、椎间隙变窄和椎管狭窄等多种退行性变。邻近节段退行性变的影响因素主要有融合节段的数目、方式、部位、内固定的使用及患者的自身因素等。柔韧内固定、人工椎间盘等方法是治疗及预防邻近节段退行性改变的方法。结论:脊柱融合固定会导致脊柱的生物力学功能发生相应地变化,随着时间的推移会导致邻近节段的退行性变加速,并出现邻近节段病。在决定脊柱固定融合术前,充分了解邻近节段的椎间盘状况、慎重考虑融合方式及内固定器械可能带来的影响、决定相应的手术方式是提高手术疗效、避免或降低邻近节段病发生的关键。

关键词：脊柱融合固定邻近节段退行性变综述文献