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Rare Metals 2014年第3期33卷 348-352页

作者： Dong-Chuan Chen Zhu-Guang Liu zhong-hua deng Chong Wang Yong-Ge Cao Quan-Lin Liu School of Materials Science & Engineering University of Science and Technology Beijing National Engineering Research Center for Optoelectronic Crystalline Materials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences College of Science Renmin University of China

In this study, small- and large-particle-diameter phosphor powders were mixed together（hybrid phosphors）to balance light efficacy and angular color uniformity and pursue optimal results. Phosphor with small-particlediameter of 4 lm was employed and it was mixed into each large-particle-diameter phosphor of 10, 16, 22, and 26 lm,at mass percentage from 0 % to 50 % with an interval of10 %, respectively. Remote phosphor package was adopted and overall phosphor concentration was kept constant for better comparison. Moreover, absorption coefficient labs,scattering coefficient lscaand extinction coefficient lext of each hybrid phosphors were calculated based on Mie theory to further discuss the experiment results. Results show that, the introduction of small-particle-diameter phosphor to large one can highly improve angular color uniformity while only slightly reduce light efficacy. The optimal performance with angular color uniformity of91.6 % as well as normalized light efficacy of 95.7 % is achieved in the white light emitting diode with hybrid phosphors consisting of 60 wt% powder of 22 μm and40 wt% powder of 4 μm.

关键词： Hybrid phosphors Light efficacy Angularcolor uniformity

Peak wavelength selection guides of chip and phosphors for phosphor-converted white light-emitting diodes

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Rare Metals 2014年第1期33卷 80-85页

作者： Dong-Chuan Chen Zhen Song Zhu-Guang Liu zhong-hua deng Lan Wu Yong-Ge Cao Quan-Lin Liu School of Materials Science & Engineering University of Science and Technology Beijing National Engineering Research Center for Optoelectronic Crystalline Materials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences College of Science Renmin University of China

The dependences of light efficiency of radiation （LER） and color-rendering index （CRI） of trichromatic white light-emitting diode （wLED）, composed of blue LED die, green/yellow, and red phosphors, on the peak wave- length of each primary were investigated by theoretical calculations, at correlative color temperature （CCT） from 2,700 to 6,500 K. The peak wavelength of InGaN based blue LED chip ranges from 450 to 471 nm, while those of Ca3Sc2Si3012：Ce3＋, b-SiA1ON：Eu2＋, and Y3A15012：Ce3＋ based green/yellow phosphors range from 511 to 572 nm, and those of Sr2SisN8：Eu2＋ and CaA1SiN3：Eu2＋ red phosphors range from 620 to 650 nm, which cover almost all the practically used, commercially available wave bands until now. Then, based on the results, selection guides of peak wavelengths for blue LED chip and phosphors to obtain tradeoff LER 〉280 lm.W-1 as well as CRI 〉80 in all CCTs are proposed. The favorable wave bands of each primary are suggested.

关键词： Luminous efficacy of radiation Color rendering index Correlative color temperature Peak wavelength Selection guide

CPL-active hybrid copper(Ⅰ)halides enabled by cation inclusion with chiral crown-ether

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Science China Chemistry 2024年第10期67卷 3283-3290页

作者： Peng Fan Li-Xuan Cai Xiao-Fang Duan Fan Yin Chen-Chen Li zhong-hua deng Xiao-Zhen Li Qing-Fu Sun College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350117China Strait Institute of Flexible Electronics(Future Technologies) Fujian Key Laboratory of Flexible ElectronicsFujian Normal University and Strait Laboratory of Flexible ElectronicsFuzhou 350117China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian College University of Chinese Academy of SciencesFuzhou 350002China

Chiral hybrid metal halides with high photoluminescence quantum yield(PLQY)and superior dissymmetry factor(g_(lum))are promising candidates for circularly polarized luminescence(CPL)emitting ***,it is a great challenge to achieve both high g_(lum)and large ***,we report a new supramolecular strategy to fabricate chiral hybrid Cu(Ⅰ)-halides with nearunity quantum yields and intense CPL *** dissymmetry factor can be dramatically modulated by tuning the hostguest *** to the chirality and variable conformations of the host-guest complexes,a series of chiral[G@L^(R/S)]_(2)Cu_(4)I_(6)have been *** incorporation of different cations within the chiral L^(R/S)hosts leads to variations of packing modes along the c-axis and different extent of distortions in the[Cu_(4)I_(6)]_(2)-*** them,[H_(3)O@L^(R/S)]+cations are stacked based on Van der Waals interactions and hierarchically self-assemble into a right/left-handed helix in[H_(3)O@L^(R/S)]_(2)Cu_(4)I_(6),which results in a high g_(lum)of-7×10^(-3)and a large PLQY of 96.92%.Notably,[G@L^(R/S)]_(2)Cu_(4)I_(6)shows promising applications in single-component white light emitting diodes(WLEDs),exhibiting a maximum dissymmetry factor of-1.2×10^(-3).The effective host-guest complexation and oriented hierarchical self-assembly provide an effective strategy for the development of high-performance CPL materials.

关键词： host-guest interaction circularly polarized luminescence copper iodide cluster hierarchical self-assembly chirality

基于可视化仿真的水电工程施工进度分析与控制研究

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系统工程理论与实践 2006年第8期26卷 55-62页

作者：宋洋钟登华天津大学建筑工程学院天津300072

对基于可视化动态仿真的水电工程施工进度分析与控制进行了研究,提出了基于GIS的施工进度可视化动态仿真方法,实现了施工进度仿真建模、计算及结果的可视化;提出了结合柔性网络计划技术的进度分析与优化方法,包括工期分析及资源优化,在... 详细信息

对基于可视化动态仿真的水电工程施工进度分析与控制进行了研究,提出了基于GIS的施工进度可视化动态仿真方法,实现了施工进度仿真建模、计算及结果的可视化;提出了结合柔性网络计划技术的进度分析与优化方法,包括工期分析及资源优化,在此基础上提出了基于可视化动态仿真的施工进度实时管理与控制方法;进行了实例分析,其成果在工程施工进度管理当中的成功应用表明所提方法具有可行性和优越性.

关键词：可视化动态仿真网络计划实时管理施工进度

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考虑资金时间价值因素的多资源均衡优化

天津大学学报 2006年第9期39卷 1048-1053页

作者：宋洋钟登华天津大学建筑工程学院天津300072

针对考虑资金时间价值因素的多资源均衡优化问题,构造了不考虑资金时间价值的多资源均衡优化模型,实现了项目中多种资源均衡的静态优化,在考虑资金利息的情况下,建立了资源资金的优化模型．在上述两种模型的基础上提出了考虑资金时间价... 详细信息

针对考虑资金时间价值因素的多资源均衡优化问题,构造了不考虑资金时间价值的多资源均衡优化模型,实现了项目中多种资源均衡的静态优化,在考虑资金利息的情况下,建立了资源资金的优化模型．在上述两种模型的基础上提出了考虑资金时间价值因素的多资源均衡优化数学模型；阐述了遗传算法的改进方法,提高了算法的性能,并在此基础上提出了基于改进遗传算法的模型优化求解流程；通过工程实例分析,其成果在工程施工多资源均衡优化当中的应用表明,本文所提方法可行且有效．

关键词：多资源均衡时间价值综合优化遗传算法

Emerging SARS-CoV-2 B.1.621/Mu variant is prominently resistant to inactivated vaccine-elicited antibodies

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Zoological Research 2021年第6期42卷 789-791页

作者： Xiaochun Xie Jian-Bao Han Guanqin Ma Xiao-Li Feng Xiaohong Li Qing-Cui Zou zhong-hua deng Jianxiong Zeng Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650201China Kunming National High-level Biosafety Research Center for Non-Human Primates Center for Biosafety Mega-ScienceKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650107China National Resource Center for Non-Human Primates National Research Facility for Phenotypic&Genetic Analysis of Model Animals(Primate Facility)Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650107China

Although it first appeared almost two years ago,the COVID-19 pandemic continues to have an impact on a global scale,in part due to newly emerging SARS-CoV-2 variants such as Delta and *** B.1.621 variant,first identified in Colombia in January 2021,was classified as a variant of interest(VOI)and designated as Mu by the World Health Organization(WHO)in August ***,its infectivity and resistance to neutralizing antibodies remain largely ***,in comparison to Delta,the Mu variant showed an unexpectedly enhanced immune resistance to inactivated vaccine-elicited ***,Mu demonstrated less infectivity than Delta,implying a biological trade-off between viral transmission and immune *** study strongly calls for urgent evaluation of the protective efficacy of current COVID-19 vaccines against the Mu *** of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)are of concern regarding control of the global COVID-19 pandemic(Wang et al.,2021).The SARS-CoV-2 B.1.621 variant was first identified in Colombia in January *** its epidemiological prevalence,the WHO defined B.1.621(named Mu)as a VOI on 30 August *** of September 2021,the WHO has classified four variants of concern(VOC),i.e.,Alpha(B.1.1.7),Beta(B.1.351),Gamma(P.1),and Delta(B.1.617.2),and two VOI,i.e.,Lambda(C.37)and Mu(B.1.621)(Supplementary Figure S1A).

关键词： Figure protective continue

基于实时仿真的地下洞室群施工进度预测与控制

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天津大学学报 2007年第6期40卷 721-725页

作者：钟登华刘奎建天津大学建筑工程学院天津300072

针对水电工程地下洞室群的施工特性,采用循环网络仿真与网络计划分析技术,提出了基于实时仿真的地下洞室群施工进度预测与控制方法.该方法能够充分反映实际施工工艺、资源配置等施工条件的动态变化;根据当前施工现状,可以在施工任意时... 详细信息

针对水电工程地下洞室群的施工特性,采用循环网络仿真与网络计划分析技术,提出了基于实时仿真的地下洞室群施工进度预测与控制方法.该方法能够充分反映实际施工工艺、资源配置等施工条件的动态变化;根据当前施工现状,可以在施工任意时刻分析预测施工工序持续时间与工程后期施工进度;通过调整施工参数,制订更切实际的动态进度计划,达到施工进度实时控制的目的.实际应用结果表明,该方法可以对施工过程中不同的进度调整措施进行有效性评价,为选择合理的进度控制措施提供有力的决策支持,从而增强进度控制的主动性.

关键词：地下洞室群施工实时仿真进度预测进度控制循环网络

3-D fracture network dynamic simulation based on error analysis in rock mass of dam foundation

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Journal of Central South University 2018年第4期25卷 919-935页

作者： zhong deng-hua WU Han WU Bin-ping ZHANG Yi-chi YUE Pan The State Key Laboratory of Hydraulic Engineering Simulation and Safety(Tianjin University) Tianjin 300072China YALONG River Hydropower Development Company Ltd.Chengdu 610051China

Accurate 3-D fracture network model for rock mass in dam foundation is of vital importance for stability,grouting and seepage analysis of dam *** the aim of reducing deviation between fracture network model and measured data,a 3-D fracture network dynamic modeling method based on error analysis was ***,errors of four fracture volume density estimation methods(proposed by ODA,KULATILAKE,MAULDON,and SONG)and that of four fracture size estimation methods(proposed by EINSTEIN,SONG and TONON)were respectively compared,and the optimal methods were ***,error index representing the deviation between fracture network model and measured data was established with integrated use of fractal dimension and relative absolute error(RAE).On this basis,the downhill simplex method was used to build the dynamic modeling method,which takes the minimum of error index as objective function and dynamically adjusts the fracture density and size parameters to correct the error ***,the 3-D fracture network model could be obtained which meets the *** proposed method was applied for 3-D fractures simulation in Miao Wei hydropower project in China for feasibility verification and the error index reduced from 2.618 to 0.337.

关键词： rock mass of dam foundation 3-D fracture network dynamic simulation fractal dimension error analysis relative absolute error(RAE) downhill simplex method

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水电工程施工进度三维动态可视化方法

天津大学学报（自然科学与工程技术版） 2005年第4期38卷 322-327页

作者：钟登华南春辉宋洋天津大学建筑工程学院天津300072

针对水电工程施工进度计划难以用传统方法简便直观描述的难题,基于GIS平台,采用三维可视化技术,提出了水电工程施工进度三维动态可视化方法;构造了施工进度三维可视化数字模型,实现了模型的动态显示、交互操作、空间分析以及施工进度可... 详细信息

针对水电工程施工进度计划难以用传统方法简便直观描述的难题,基于GIS平台,采用三维可视化技术,提出了水电工程施工进度三维动态可视化方法;构造了施工进度三维可视化数字模型,实现了模型的动态显示、交互操作、空间分析以及施工进度可视化仿真等功能.通过在水电工程中的实际应用,表明采用施工进度三维动态可视化方法能够形象表达施工进度,动态描述施工进度中各环节之间复杂的动态时空逻辑关系,对于提高水电工程设计与管理现代化水平具有现实意义.

关键词：施工进度三维可视化数字模型地理信息系统水电工程

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混凝土斜拉桥施工系统仿真理论与应用

天津大学学报（自然科学与工程技术版） 2005年第9期38卷 811-816页

作者：钟登华付金强张静天津大学建筑工程学院天津300072

斜拉桥施工过程的仿真分析随着桥梁建设的发展显得日益重要,为此,利用面向对象的复杂工程系统可视化仿真建模方法,将系统仿真技术和三维动画演示技术应用于桥梁施工仿真领域.针对某斜拉桥施工特点,阐述了系统仿真建模思想,同时结合循环... 详细信息

斜拉桥施工过程的仿真分析随着桥梁建设的发展显得日益重要,为此,利用面向对象的复杂工程系统可视化仿真建模方法,将系统仿真技术和三维动画演示技术应用于桥梁施工仿真领域.针对某斜拉桥施工特点,阐述了系统仿真建模思想,同时结合循环网络模型概念,以VC++作为仿真平台,设计编制了桥梁施工仿真软件(BSAS).研究成果在某斜拉桥工程施工组织研究中得到成功应用,验证了大型桥梁三维动态可视化仿真技术在斜拉桥施工优化分析方面的可行性和优越性.

关键词：斜拉桥施工可视化仿真仿真建模循环网络