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Shoshonitic intrusive suite in SE Guangxi: Petrology and geochemistry

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Chinese Science Bulletin 2000年第7期45卷 653-659页

作者： LI Xianhua ZHOU Hanwen LIU Ying LEE Chi-yu SUN Min CHEN Chenhong Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China Department of Earth Sciences University of Hong KongPokfulam RoadHong KongChina Department of Geology Taiwan UniversityTaipei 106-17China

A NE-direction Mesozoic shoshonitic intrusive s黫te in SE Guangxi has been identified in terms of geological, petrological and geochemical investigations. The shoshonitic intrusives are characterized by enrichment of LILE, HFSE and LREE and no obvious Nb-Ta depletion, similar to those potassic rocks formed in within-plate and rifting environments. Unlike most shoshonitic rocks forming in arc settings, the SE Guangxi shoshonitic intrusives were likely generated during regional lithosphere extension induced by upwelling of asthenosphere mantle.

关键词： shoshonitic rocks petrology element geochemistry Guangxi.

Mean-field stochastic linear quadratic optimal control problems: closed-loop solvability

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Probability, Uncertainty and Quantitative Risk 2016年第1期1卷 37-60页

作者： Xun Li Jingrui Sun Jiongmin Yong Department of Applied Mathematics The Hong Kong Polytechnic UniversityHong KongChina Department of Mathematics University of Central FloridaOrlandoFL 32816USA

An optimal control problem is studied for a linear mean-field stochastic differential equation with a quadratic cost *** coefficients and the weighting matrices in the cost functional are all assumed to be *** strategies are introduced,which require to be independent of initial states;and such a nature makes it very useful and convenient in *** this paper,the existence of an optimal closed-loop strategy for the system(also called the closedloop solvability of the problem)is characterized by the existence of a regular solution to the coupled two(generalized)Riccati equations,together with some constraints on the adapted solution to a linear backward stochastic differential equation and a linear terminal value problem of an ordinary differential equation.

关键词： Mean-field stochastic differential equation Linear quadratic optimal control Riccati equation Regular solution Closed-loop solvability

High-quality single-crystal CdSe nanoribbons and their optical properties

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Optoelectronics Letters 2008年第3期4卷 161-164页

作者： HOU D.D LIU Y. K ZAPIEN J. A SHAN Y. Y LEE S. T Department of Physics Yunnan Normal University Kunming 650092 China Center of Super-Diamond and Advanced Films （COSDAF） and Department of Physics and Material Science City University of Hong Kong Hong Kong SAR China

Large-scale synthesis of single-crystal CdSe nanoribbons is achieved by a modified thermal evaporation method, in which two-step-thermal-evaporation is used to control CdSe sources＇ evaporation. The synthesized CdSe nanoribbons are usually several micrometers in width, 50 nm in thickness, and tens to several hundred micrometers in length. Studies have shown that high-quality CdSe nanoribbons with regular shapes can be obtained by this method. Room-temperature photolumines-cence indicates that the lasing emission at 710 nm has been observed under optical pumping （266 nm） at power densities of 25-153 kW/cm^2. The full width half maximum （FWHM） of the lasing mode is 0.67 nm

关键词：晶体纳米材料光学性能物理性能

Changing pattern of neonatal jaundice and kernicterus in Chinese neonates

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Chinese Medical Journal 1997年第6期110卷 50-56页

作者： Chap-YungYeung 杨执庸 Department of Paediatrics University of Hong Kong Queen Mary Hospital Hong Kong

ＣｈａｎｇｉｎｇｐａｔｅｒｎｏｆｎｅｏｎａｔａｌｊａｕｎｄｉｃｅａｎｄｋｅｒｎｉｃｔｅｒｕｓｉｎＣｈｉｎｅｓｅｎｅｏｎａｔｅｓＣｈａｐＹｕｎｇＹｅｕｎｇ杨执庸Ｃｈｉｎｅｓｅｎｅｏｎａｔｅｓａｒｅｄｉｆｅｒｅｎｔｆｒ... 详细信息

ＣｈａｎｇｉｎｇｐａｔｅｒｎｏｆｎｅｏｎａｔａｌｊａｕｎｄｉｃｅａｎｄｋｅｒｎｉｃｔｅｒｕｓｉｎＣｈｉｎｅｓｅｎｅｏｎａｔｅｓＣｈａｐＹｕｎｇＹｅｕｎｇ杨执庸ＣｈｉｎｅｓｅｎｅｏｎａｔｅｓａｒｅｄｉｆｅｒｅｎｔｆｒｏｍＣａｕｃａｓｉａｎｓｉｎｍａｎ...

关键词： HYPERBILIRUBINEMIA PREVENTION RISK

Pathology of esophageal cancers:local experience and current insights

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Chinese Medical Journal 1997年第6期110卷 61-66页

作者： King-YinLam LilyMa Department of Pathology University of Hong Kong Queen Mary Hospital Hong Kong

Ｐａｔｈｏｌｏｇｙｏｆｅｓｏｐｈａｇｅａｌｃａｎｃｅｒｓ：ｌｏｃａｌｅｘｐｅｒｉｅｎｃｅａｎｄｃｕｒｅｎｔｉｎｓｉｇｈｔｓＫｉｎｇＹｉｎＬａｍａｎｄＬｉｌｙＭａＥｓｏｐｈａｇｅａｌｃａｎｃｅｒｉｓｖｅｒｙｐｏｐｕｌ... 详细信息

Ｐａｔｈｏｌｏｇｙｏｆｅｓｏｐｈａｇｅａｌｃａｎｃｅｒｓ：ｌｏｃａｌｅｘｐｅｒｉｅｎｃｅａｎｄｃｕｒｅｎｔｉｎｓｉｇｈｔｓＫｉｎｇＹｉｎＬａｍａｎｄＬｉｌｙＭａＥｓｏｐｈａｇｅａｌｃａｎｃｅｒｉｓｖｅｒｙｐｏｐｕｌａｒｉｎＨｏｎｇＫｏｎｇ．Ｔｈｅｔ...

关键词： SQUAMOUS-CELL CARCINOMA UPPER AERODIGESTIVE TRACT hong-kong CHINESE ADENOCARCINOMA EXPRESSION

General Approach to Antinormally Ordering Boson Exponential Quadratic Operators and Its Applications

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Chinese Physics Letters 1996年第6期13卷 401-404页

作者： WANG Xiang-bin ZHANG Yong-de PAN Jian-wei Department of Information Management and Decision Science University of Science and Technology of ChinaHefei 230026 Department of Physics Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong(mailing address) Department of Modern Physics University of Science and Technology of ChinaHefei 230026

A general approach to antinormally ordering the boson exponential quadratic operators(EQOs)is *** the approach,some important EQOs,including squeezed operator of one mode and two mode,linear quantum transformation ope... 详细信息

关键词： operator operators exponential

Analog memristive memory with applications in audio signal processing

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Science China(Information Sciences) 2014年第4期57卷 243-257页

作者： DUAN ShuKai HU XiaoFang WANG LiDan LI ChuanDong School of Electronics and Information Engineering Southwest University Department of Mechanical and Biomedical Engineering City University of Hong Kong

Since the development of the HP memristor,much attention has been paid to studies of memristive devices and applications,particularly memristor-based nonvolatile semiconductor *** to its unique properties,theoretically,one could restart a memristor-based computer immediately without the need for reloading the ***,current memories are mainly binary and can store only ones and zeros,whereas memristors have multilevel states,which means a single memristor unit can replace many binary transistors and realize higher-density *** is believed that memristors can also implement analog storage besides binary and multilevel information *** this paper,an implementation scheme for analog memristive memory is considered.A charge-controlled memristor model is derived and the corresponding SPICE model is *** write and read operations are demonstrated through numerical analysis and circuit *** addition,an audio analog record/play system using a memristor crossbar array is *** system can provide great storage capacity(long recording time)and high audio quality with a simple small circuit structure.A series of computer simulations and analyses verify the effectiveness of the proposed scheme.

关键词： memristor analog memory circuit simulation record/play system audio signal storage

Microwave heating as a universal method to transform confined molecules into armchair graphene nanoribbons

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Nano Research 2023年第7期16卷 10644-10651页

作者： Haoyuan Zhang Yingzhi Chen Kunpeng Tang Ziheng Lin Xuan Li hongwei Zhang Yifan Zhang Chi Ho Wong Chi Wah Leung Chee Leung Mak Yuan Hu Weili Cui Kecheng Cao Lei Shi State Key Laboratory of Optoelectronic Materials and Technologies Nanotechnology Research CenterGuangdong Province Key Lab of Display Material and TechnologySchool of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Huzhou Key Laboratory of Environmental Functional Materials and Pollution Control School of EngineeringHuzhou UniversityHuzhou 313000China Department of Industrial and Systems Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 999077China Department of Applied Physics The Hong Kong Polytechnic UniversityHong Kong 999077China Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China

Armchair graphene nanoribbons(AGNRs)with sub-nanometer width are potential materials for the fabrication of novel nanodevices thanks to their moderate direct band *** are usually synthesized by polymerizing precursor molecules on substrate ***,it is time-consuming and not suitable for large-scale *** can also be grown by transforming precursor molecules inside single-walled carbon nanotubes(SWCNTs)via furnace annealing,but the obtained AGNRs are normally *** this work,microwave heating is applied for transforming precursor molecules into *** fast heating process allows synthesizing the AGNRs in *** different molecules were successfully transformed into AGNRs,suggesting that it is a universal *** importantly,as demonstrated by Raman spectroscopy,aberrationcorrected high-resolution transmission electron microscopy and theoretical calculations,less twisted AGNRs are synthesized by the microwave heating than the furnace *** results reveal a route for rapid production of AGNRs in large scale,which would benefit future applications in novel AGNRs-based semiconductor devices.

关键词： armchair graphene nanoribbons(AGNRs) microwave heating single-walled carbon nanotubes(SWCNTs) Raman spectroscopy

Generation and optical display of a binary-sampled phase-only hologram

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Chinese Optics Letters 2016年第1期14卷 12-15页

作者： P. W. M. Tsang Y.-T. Chow T.-C. Poon J.-P. Liu Department of Electronic Engineering City University of Hong Kong Hong Kong SAR China Bradley Department of Electrical and Computer Engineering Virginia Tech Blacksburg VA 24061 USA Department of Photonics Feng Chia University No. 100 Wenhwa Rd. Taichung 407 China

Past research has demonstrated that a phase-only hologram can be obtained by down-sampling the intensity image of the object scene prior to the generation of the hologram. In this Letter, we extend the method to the generation of binary phase-only holograms. A hologram derived with our proposed method is referred to as a binary-sampled phase-only hologram （BSPOH）. Being different from the parent scheme, we have adopted an off- axis configuration in the generation of the BSPOH to avoid the quantization noise, the zeroth-order light, and the conjugate lights. An experimental evaluation reveals that the reconstructed image of the BSPOH is of good quality, and only contains slight amount of noise.

关键词： Bins Holographic displays Lithography