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supported by the National Natural Science Foundation ofChina(Grant No.41476131),the Innovation Program of Shanghai Municipal Education Commission(Grant No.14ZZ143), the Shanghai Universities Plateau Discipline Project of Marine Sciences and the Peak Discip

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Science China Earth Sciences 2017年第2期60卷 391-396页

作者： LI Jing SUN Lei YU ZhiMing song XiuXian Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChina Academy of Science Laboratory of Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology College of Earth Sciences University of Chinese Academy of Sciences College of Environmental Science and Engineering Ocean University of China

Prevention of annual"green tides"caused by blooms of the green macroalga Ulva prolifera,which have occurred in the Yellow Sea since 2007,has received much *** evidence indicates that micro-propagules on the rafts used for Porphyra yezoensis aquaculture along the coastline of Jiangsu Province in China,were the primary source of these green *** this study,we investigated the effectiveness of a silicone antifouling coating for preventing the adhesion and germination of *** micro-propagules on bamboo and nylon ropes,which have been used in rafts for *** *** results demonstrated that a coating of silicone(Sylgard 184)containing 1.0 wt.%sodium benzoate(NaB)could reduce the adhesion rate to<5%and completely inhibited the growth of *** propagules on the coated *** bamboo and nylon ropes with NaB-incorporated silicone thus proved a potentially effective method for controlling the initial biomass accumulation of ***.

关键词： Ulva prolifera Green tide Silicone Sodium benzoate Biofouling

Electroplastic Tensile Behavior of 5A90 Al–Li Alloys

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Acta Metallurgica Sinica(English Letters) 2014年第4期27卷 642-648页

作者： Pengchao song Xifeng Li Wei Ding Jun Chen Department of Plasticity Technology School of Materials Science and EngineeringShanghai Jiao Tong University

The electroplastic（EP） tensile properties of 5A90 Al–Li alloys compared with thermal tension were *** microstructural variation at different conditions was observed by SEM and *** current density significantly influences the elongation and the flow *** increasing current density,wider and deeper dimples on the fracture surfaces and less dislocation density and pile-ups in the EP tension samples were observed compared with roomtemperature and thermal tension,which indicates the plasticity improvement and flow stress *** EP effect（EPE） mainly results from a comprehensive function of Joule heating and pure *** them,Joule heating effect is perhaps a dominant factor.

关键词： 5A90 Al–Li alloys Electroplastic effect Tensile properties Microstructure

Generalized interface automata with multicast synchronization

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Frontiers of Computer Science 2015年第1期9卷 1-14页

作者： Fei HE Xiaoyu song Ming GU Jiaguang SUN Tsinghua National Laboratory for Information Science and Technology (TNList) Tsinghua University Beijing 100084 China Key Laboratory for Information System Security Ministry of Education Beijing 100084 China School of Software Tsinghua University Beijing 100084 China Department of Electrical & Computer Engineering Portland State University Oregon 97207 USA

Interface automata are one of the prominent formalisms for specifying interface behaviors of componentbased systems. However, only one-to-one communication is allowed in the composition of interface automata. This paper presents multicast interface automata which generalize the classic interface automata and accommodate multicast communication mechanism. The multicast interface automata endorse both bottom-up and top-down design methodologies. Theoretical results on compatibility and refinement are established for incremental design and independent implementability.

关键词： interface automata multicast communication,component interaction verification

Generalized Dual Symmetry Mechanical Performance of Nano Magnetic Composite

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上海交通大学学报 2004年第Z2期38卷 48-53页

作者： Li Yong song Jian Zhang Z.M Department of Applied Mechanics Beijing Institute of Technology Beijing100081 China State Key Laboratory of Automotive Safety And Energy Tsinghua University Beijing100084China State Key Laboratory of Automotive Safety And Energy Tsinghua University Beijing100084China Center of Solid Mechanics Beijing University of Aeronautics and AstronauticsBeijing100083China

Nano magnetic composite is a kind of heterogeneous material. Scientists found the symmetrical and dual symmetrical phenomena in its structure previously and we find the generalized dual symmetry mechanical performance in Nano Magnetic Composite and further establish the theory. The applicable nano magnetic composite structure is analyzed thoroughly and systematically. Such phenomena as serration and step dispersing distribution of bending stress and mirror reflection of interlaminar stress are thus found. Therefore, starting from the physical features of materials, Nano Magnetic Composite are analyzed on the basis of the understanding and application of the generalized dual symmetry mechanical performance. In addition, the design parameter is optimized to attain the goal of maximizing the use of materials, which is quite meaningful.

关键词： nano magenetic composite dual symmetrical heterogeneous model

Energy efficient design for multiuser downlink energy and uplink information transfer in 5G

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Science China(Information Sciences) 2016年第2期59卷 74-81页

作者： Chunguo LI Yanshan LI Kang song Luxi YANG Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education Southeast University ATR National Key Laboratory of Defense Technology Shenzhen University

Simultaneous wireless information and power transfer(SWIPT) is studied in this paper for the wireless powered downlink(DL) and multiuser information uplink(UL) systems. The objective is to maximize the energy efficiency defined as the ratio of the achieved throughput over the energy cost by optimizing the time allocation for the DL and multi-user UL traffics and its goal is to obtain the analytical expression to the optimal time allocation yet the resulting difficulty comes from the sum throughput of the multiuser in UL as well as the corresponding power consumption. To tackle this, the Jensen inequality is applied to approximating the exact expression of the sum throughput for the UL multi-users, leading to an upper-bound of the *** final closed form is exact in the single-user scenario yet approximate in the multi-user scenario. Numerical simulations verify the tightness of this approximation and the performances of the proposed analytical scheme.

关键词： energy harvest time allocation energy efficiency uplink multiuser throughput maximization analytical expression

SERS-based mercury ion detections:principles,strategies and recent advances

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Science China Chemistry 2016年第1期59卷 16-29页

作者： chunyuan song boyue yang yanjun yang lianhui wang Key Laboratory for Organic Electronics&Information Displays Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts&TelecommunicationsNanjing 210023China

Mercury ion(Hg^(2+)),known as one of the highly toxic and soluble heavy metal ions,is causing serious environmental pollution and irreversible damage to the *** is urgent to develop some rapid and ultrasensitive methods for detecting trace mercury ions in the environment especially drink ***-enhanced Raman scattering(SERS)is considered as a novel and powerful optical analysis technique since it has the significant advantages of ultra-sensitivity and high *** recent years,the SERS technique and its application in the detection of Hg^(2+)have become more prevalent and *** review provides an overall survey of the development of SERS-based Hg^(2+)detections and presents a summary relating to the basic principles,detection strategies,recent advances and current challenges of SERS for Hg^(2+)detections.

关键词： mercury ion surface-enhanced Raman scattering detection strategy turn-on turn-off

Carbothermic reduction characteristics of ludwigite and boron–iron magnetic separation

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International Journal of Minerals,Metallurgy and Materials 2018年第9期25卷 1000-1009页

作者： Guang Wang Qing-guo Xue Jing-song Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

Ludwigite is a kind of complex iron ore containing boron, iron, and magnesium, and it is the most promising boron resource in China. Selective reduction of iron oxide is the key step for the comprehensive utilization of ludwigite. In the present work, the reduction mechanism of ludwigite was investigated. The thermogravimetry and differential scanning calorimetry analysis and isothermal reduction of ludwigite/coal composite pellet were performed. Ludwigite yielded a lower reduction starting temperature and a higher final reduction degree compared with the traditional iron concentrates. Higher specific surface area and more fine cracks might be the main reasons for the better reducibility of ludwigite. Reducing temperature highly affected the reaction fraction and microstructure of the reduced pellets, which are closely related to the separation degree of boron and iron. Increasing reducing temperature benefited the boron and iron magnetic separation. Optimum magnetic separation results could be obtained when the pellet was reduced at 1300°C. The separated boron-rich non-magnetic concentrate presented poor crystalline structure, and its extraction efficiency for boron reached 64.3%. The obtained experimental results can provide reference for the determination of the comprehensive utilization flow sheet of ludwigite.

关键词： complex iron ore boron resource carbothermic reduction magnetic separation

大尺寸BGO-SiPM探测器温度效应及能量分辨研究

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原子能科学技术 2025年第2期59卷 257-264页

作者：宋路洋苏俊张立勇陈俊锋刘峰成覃之巍盛耀德江信之陈鑫林棽黄羿彤王琳谌阳平金仕纶卢飞射线束技术教育部重点实验室北京师范大学物理与天文学院北京100875 中国科学院上海硅酸盐研究所上海201899 中国原子能科学研究院北京102413 中国科学院近代物理研究所甘肃兰州730000 中国科学院上海高等研究院上海201210

大型闪烁体γ探测阵列在核物理和核天体物理等领域的实验研究中发挥着重要作用。传统的光电倍增管(PMT)体积较大,对设计带来了诸多限制,进而影响阵列的效率、紧凑性和颗粒度等关键性能指标的提升,可采用体积更小的硅光电倍增器(SiPM)作... 详细信息

大型闪烁体γ探测阵列在核物理和核天体物理等领域的实验研究中发挥着重要作用。传统的光电倍增管(PMT)体积较大,对设计带来了诸多限制,进而影响阵列的效率、紧凑性和颗粒度等关键性能指标的提升,可采用体积更小的硅光电倍增器(SiPM)作为替代方案。然而,与PMT相比,SiPM的性能对温度的敏感性更显著,这一效应和闪烁体自身的温度效应相互叠加,进一步增加了探测器的使用复杂性。本工作将6 cm×6 cm×12 cm的大尺寸锗酸铋(BGO)闪烁体和8×8通道的SiPM阵列耦合形成BGO-SiPM探测器,并对其在不同温度下的工作条件进行了测试,确定了其最佳工作电压,得到了最佳能量分辨率。同时,还采用PMT对同一BGO闪烁体进行读出(BGO-PMT探测器)并在相同温度下进行了对比测量。实验结果显示,当温度高于20℃时,SiPM迅速上升的暗电流会导致探测器能量分辨变差;20℃以下,BGO-SiPM和BGO-PMT探测器性能接近,但BGO-SiPM探测器的能量分辨率随温度降低的提升速度略优于BGO-PMT探测器,这主要归因于SiPM暗电流随温度降低而减小。此外,本工作还研究了20℃附近BGO-SiPM探测器峰道址随温度的变化关系。研究表明,大尺寸BGO-SiPM探测器性能相较BGO-PMT探测器具有一定的优势,但峰道址的温度敏感性更强,为SiPM在BGO探测阵列的应用提供重要参考。

关键词： γ探测阵列硅光电倍增器锗酸铋闪烁体温度效应击穿电压能量分辨率

Controllable emission bands and morphologies of high-quality CsPbX3 perovskite nanocrystals prepared in octane

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Nano Research 2018年第9期11卷 4654-4663页

作者： Shuai Ye Mengjie Zhao Jun song Junle Qu Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China

Halide perovskite （CsPbX3, X = C1, Br, or I） quantum dots have received increasing attention as novel colloidal nanocrystals （NCs）. Accurate control of emission bands and NC morphologies are vital prerequisites for most CsPbX3 NC practical applications. Therefore, a facile method of synthesizing CsPbX3 （X = C1, Br, or I） NCs in the nonpolar solvent octane was developed. The process was conducted in air at - 90℃ to synthesize high-quality CsPbX3 NCs showing 12-44 nm wide emission and high photoluminescence quantum yield, exceeding 90%. An in situ anion-exchange method was developed to tune CsPbX3 NC photoluminescence emission, using PbX2 dissolved in octane as the halide source. NC morphology was controlled by dissolving specific metal-organic salts in the precursor solution prior to nucleation, and nanocubes, nanodots, nanosheets, nanoplatelets, nanorods, and nanowires were obtained following the same general method providing a facile, versatile route to controlling CsPbX3 NC emission bands and morphologies, which will broaden the range of CsPbX3 NC practical applications.

关键词： CsPbX3 quantum dots nonpolar solvent octane controllable composition controllable morphology high quantum yield