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Photonics Research 2022年第11期10卷 2622-2627页

作者： PEIWEI LV ZHENYANG LIU jinxing zhao ZUPING XIONG LIJIN WANG XU LI zhaoSHENG QIAN AIWEI TANG Key Laboratory of Luminescence and Optical Information Ministry of EducationSchool of Physical Science and EngineeringBeijing Jiaotong UniversityBeijing 100044China Hebei Key Laboratory of Optic-Electronic Information and Materials College of Physics Science and TechnologyHebei UniversityBaoding 071002China College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321004China

Solution process is a key technique for the manufacture of large-area and low-cost semiconducting devices and,thus, attracts a lot of attention from both academia and industry. Herein, we realized solution-processed lightemitting diodes(excluding a cathode) based on aggregation-induced emission(AIE) molecules of tetraphenylethylene-4Cl(TPE-4Cl) and cadimum-free semiconductor nanocrystals(NCs) for the first time. By mixing Cu-In-Zn-S NCs and TPE-4Cl as an emissive layer, a new type of environmentally friendly white-light-emitting diodes(WLEDs) was prepared through a solution-processed technique. After systematical optimization of the asprepared WLEDs, the corresponding color rendering index can reach up to 87 with a maximum luminance of262 cd/m2. This study may pave a new road to realize AIE-based WLEDs through a solution-processed technique.

关键词： technique nanocrystals AIE

Molecular characterization and expression analysis of a chicken-type lysozyme gene from housefly (Musca domestica)

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Journal of Genetics and Genomics 2009年第1期36卷 7-16页

作者： Qian Ren, Xiaofan zhao, jinxing Wang School of Life Sciences, Shandong University, Jinan 250100, China School of Life Sciences Shandong University Jinan 250100 China

Lysozymes can hydrolyze bacteria and play an important role in animal digestion and innate immunity. The cDNA of a chicken-type lysozyme gene （Mdlys） was cloned from housefly （Musca domestica）. The 484 bp full-length cDNA contains a 426 bp open reading frame （ORF） that encodes MdLys of 141 amino acids. Phylogenetic analysis indicated that the MdLys was similar to chicken-type lysozymes. Spatio-temporal expression of Mdlys was analyzed by RT-PCR. The Mdlys transcript can be detected in both midgut and fat body and was expressed at a relatively lower level at the embryo stage. Mdlys mRNA was upregulated 2 h post bacterial challenge, maintained for 2 to 6 h, and slightly declined from 12 to 24 h post-injection. Western blot analysis showed that MdLys was highly expressed in midgut and was also detected in the hemolymph and fat body. MdLys expression was slightly increased in midgut after challenging with Escherichia coli or Staphylococcus aureus. Its expression was also slightly increased in the fat body after challenging with S. aureus, but no obvious change occurred after E. coli challenge. MdLys expression in the hemolymph was not affected by bacterial challenge. In the developmental stages, MdLys expression levels had no obvious change from the first instar to the pupae stage. There was also no variation under 24 h starvation stress. Recombinant MdLys displayed inhibitory activity against Gram-negative and Gram-positive bacteria. Together, these results suggest that MdLys may play an important role in the innate immunity of houseflies.

关键词： innate immunity lysozyme antibacterial activity Musca domestica

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基于深度视觉的多旋翼无人机障碍物检测研究

建模与仿真 2024年第3期13卷 2023-2038页

作者：彭雪松赵金星徐成昊王义文上海理工大学机械工程学院上海

随着多旋翼无人机的智能化发展,在无人机执行任务过程中,无论是对动态还是静态障碍物都要进行感知和规避,而且感知系统作为无人机自主飞行过程中的第一步,也是极其重要的部分。针对这个问题,本文主要研究了无人机对动、静态障碍物的检... 详细信息

随着多旋翼无人机的智能化发展,在无人机执行任务过程中,无论是对动态还是静态障碍物都要进行感知和规避,而且感知系统作为无人机自主飞行过程中的第一步,也是极其重要的部分。针对这个问题,本文主要研究了无人机对动、静态障碍物的检测。首先,使用目标检测算法实时地检测图像中障碍物,并确定其在像素级别上的位置,结合立体匹配算法估计障碍物的深度信息,从而得到障碍物的三维坐标;实现了基于深度视觉的障碍物检测。本文的研究内容可以为无人机及其它机器人在复杂、动态的环境中安全运行提供重要的方法论指导,具有重要的工程实践意义。

关键词：多旋翼无人机目标检测立体匹配深度视觉软件在环仿真

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时速350 km卧铺动车组可行性分析

铁道车辆 2024年第4期62卷 16-20页

作者：谷绪地熊剑春李树宝赵金星同济大学上海201804 中车产业投资有限公司北京100071 中车唐山机车车辆有限公司河北唐山063035

为了适应中国高速铁路复杂运营环境及长大交路运营等需求,高效利用高铁线路夜间能力,推动高铁可持续发展,提升动车组综合运能,实现高铁运营模式创新,研制了一款兼顾经济性、舒适性和可靠性的时速350 km卧铺动车组。文章简要介绍了时速35... 详细信息

为了适应中国高速铁路复杂运营环境及长大交路运营等需求,高效利用高铁线路夜间能力,推动高铁可持续发展,提升动车组综合运能,实现高铁运营模式创新,研制了一款兼顾经济性、舒适性和可靠性的时速350 km卧铺动车组。文章简要介绍了时速350 km卧铺动车组车辆特点,论述了该动车组的运营经济性、开行可行性。时速350 km卧铺动车组与既有250 km卧铺动车组相比,其经济性好,适用范围广,可满足夕发朝至的应用需求,满足长大交路运输需求,在大都市经济发达地区极具竞争力。

关键词：高速铁路时速350 km卧铺动车组可行性经济性

Preparation of nitrogen doped clews-like carbon materials and their application as the electrode in supercapacitor

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Chinese Chemical Letters 2019年第3期30卷 787-791页

作者： Shengrui Chen Jiyuan Liang jinxing zhao Haifeng Li Yan Liu Heming Deng Chang Liu Shun Tang Yuan-Cheng Cao Key Laboratory of Optoelectronic Chemical Materials and Devices Ministry of Education Jianghan University State Grid Electric Power Research Institute State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology

In this work, nitrogen doped clews-like carbon materials were successfully fabricated through hydrothermal polymerization method, followed by post treatment that integrated the carbonization,activation and post-nitrogen doping into one process. This preparation method can form particular hierarchical porous structure without using any sacrificial templates. The experimental results show that the nitrogen doped clews-like hierarchical porous carbon materials possess a relatively high specific surface area of 815 m^2/g with the nitrogen content of 10.58 at%. The electrochemical properties show that the resulting sample delivers 258 F/g at a 0.5 A/g and excellent capacity retention of 79% at 20 A/g. After conducting 10,000 charge-discharge cycles at 10 A/g, the capacitance retention of 98.3% is *** intriguing results demonstrate that the obtained nitrogen doped clews-like carbon materials will be promising electrode materials for supercapacitor and other energy storage devices.

关键词： Porous carbon material Nitrogen doped Clews-like Hierarchical Electrode

The relationship between compartment models and their stochastic counterparts:A comparative study with examples of the COVID-19 epidemic modeling

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Journal of Biomedical Research 2024年第2期38卷 175-188,I0016-I0018页

作者： Ziyu zhao Yi Zhou jinxing Guan Yan Yan Jing zhao Zhihang Peng Feng Chen Yang zhao Fang Shao Department of Biostatistics School of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Nanjing Hanwei Public Health Research Institute Co. LtdNanjingJiangsu 210005China China International Cooperation Center for Environment and Human Health Center for Global HealthNanjing Medical UniversityNanjingJiangsu 211166China The Center of Biomedical Big Data and the Laboratory of Biomedical Big Data Nanjing Medical UniversityNanjingJiangsu 211166China Jiangsu Key Lab of Cancer Biomarkers Prevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineNanjing Medical UniversityNanjingJiangsu 211166China

Deterministic compartment models(CMs)and stochastic models,including stochastic CMs and agent-based models,are widely utilized in epidemic ***,the relationship between CMs and their corresponding stochastic models is not well *** present study aimed to address this gap by conducting a comparative study using the susceptible,exposed,infectious,and recovered(SEIR)model and its extended CMs from the coronavirus disease 2019 modeling *** demonstrated the equivalence of the numerical solution of CMs using the Euler scheme and their stochastic counterparts through theoretical analysis and *** on this equivalence,we proposed an efficient model calibration method that could replicate the exact solution of CMs in the corresponding stochastic models through parameter *** advancement in calibration techniques enhanced the accuracy of stochastic modeling in capturing the dynamics of ***,it should be noted that discrete-time stochastic models cannot perfectly reproduce the exact solution of continuous-time ***,we proposed a new stochastic compartment and agent mixed model as an alternative to agent-based models for large-scale population simulations with a limited number of *** model offered a balance between computational efficiency and *** results of this research contributed to the comparison and unification of deterministic CMs and stochastic models in epidemic ***,the results had implications for the development of hybrid models that integrated the strengths of both ***,the present study has provided valuable epidemic modeling techniques and their practical applications for understanding and controlling the spread of infectious diseases.

关键词： compartment models agent-based models compartment-agent mixed models comparative study COVID-19

Atkinson循环发动机人工神经网络模型的研究

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汽车工程 2013年第1期35卷 13-17页

作者：赵金星许敏李明上海交通大学汽车电子控制技术国家工程实验室上海200240

用GT-Power软件建立了压缩比为10.6的1.8L的Otto循环发动机仿真模型,并在此基础上建立用于Atkinson循环发动机设计和优化的人工神经网络模型。应用拉丁超立方采样算法进行实验设计,用GT-Power对各实验点进行计算,得到用于神经网络训练... 详细信息

用GT-Power软件建立了压缩比为10.6的1.8L的Otto循环发动机仿真模型,并在此基础上建立用于Atkinson循环发动机设计和优化的人工神经网络模型。应用拉丁超立方采样算法进行实验设计,用GT-Power对各实验点进行计算,得到用于神经网络训练和测试的实验数据集。通过MATLAB/GT-Power耦合的自动化平台进行训练和测试数据的采集以及神经网络建模和优选。结果表明,建立的Atkinson循环发动机神经网络模型具有较高的预测精度,可用于Atkinson循环发动机的进一步设计和优化工作。

关键词： Atkinson循环发动机实验设计神经网络 MATLAB GT-Power耦合平台

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舵机永磁无刷直流电机控制器参数离线整定

电工技术学报 2013年第9期28卷 281-287页

作者：崔业兵郑健鞠玉涛赵金星南京理工大学机械工程学院南京210094 上海交通大学机械与动力工程学院上海200240

针对电动舵机伺服系统控制参数较难整定问题,提出一种基于神经网络和遗传算法极值寻优的PI控制器参数离线整定方法。采用电机舵机伺服系统的实验数据训练BP神经网络,并选择预测精度最高的神经网络模型的输出作为遗传算法的优化目标函数... 详细信息

针对电动舵机伺服系统控制参数较难整定问题,提出一种基于神经网络和遗传算法极值寻优的PI控制器参数离线整定方法。采用电机舵机伺服系统的实验数据训练BP神经网络,并选择预测精度最高的神经网络模型的输出作为遗传算法的优化目标函数的输入,采用遗传算法快速搜索,得到使舵机伺服系统的动态响应性能最好的PI控制器参数组合。并在基于无刷直流电机驱动的电动舵机平台上进行实验,结果表明采用优化后的PI控制参数,舵机系统能够快速、平稳而又准确地跟踪输入指令变化,抗干扰能力强。

关键词：遗传算法神经网络无刷直流电机电动舵机优化

Single-cell characterization of major components of plant cell walls in situ by Raman spectroscopy

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Science China(Life Sciences) 2024年第8期67卷 1772-1774页

作者： Yujian Li Weiwei Shen Xi Zhang Yaning Cui Yuanyuan zhao Yayu Guo Xiaojuan Li Shuizhong Wang Guoyong Song Pu Wang Jianfeng Ma jinxing Lin State Key Laboratory of Efficient Production of Forest Resources College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Institute of Tree Development and Genome Editing Beijing Forestry UniversityBeijing 100083China National Engineering Research Center of Tree Breeding and Ecological Restoration College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Beijing Key Laboratory of Lignocellulosic Chemistry Engineering Research Center of Forestry Biomass Materials and EnergyMinistry of EducationBeijing Forestry UniversityBeijing 100083China Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijing 100191China Key lab of Bamboo and Rattan Science&Technology International Center for Bamboo and RattanBeijing 100102China

Dear Editor,Plant cell walls are complex and dynamic structures that are mainly composed of polysaccharide polymers such as cellulose,hemicellulose,and pectin,in addition to substantial amounts of the non-saccharide polymer lignin(McFarlane et al.,2014;German et al.,2023).The components of cell walls are interconnected in various ways to form a complex,multilayered network structure(Wen et al.,2023).

关键词： walls cellulose characterization

基于Android平台的EAST即时通信系统

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计算机应用与软件 2020年第8期37卷 11-15,97页

作者：赵金幸肖炳甲袁旗平中科院等离子体物理研究所安徽合肥230031 中国科学技术大学安徽合肥230026

在全超导托卡马克装置EAST(Experimental Advanced Superconductive Tokamak)放电实验过程中会产生大量的实验数据,为方便实验人员掌握实验进程,更加便捷地参与到核聚变实验中,并且即时交流分析实验结果,设计开发了基于Android平台的即... 详细信息

在全超导托卡马克装置EAST(Experimental Advanced Superconductive Tokamak)放电实验过程中会产生大量的实验数据,为方便实验人员掌握实验进程,更加便捷地参与到核聚变实验中,并且即时交流分析实验结果,设计开发了基于Android平台的即时通信系统。以Openfire+Smack开源框架作为解决方案,一方面保证完全拥有软件控制权,确保数据安全性;另一方面可以专注于定制系统特色功能,以更好地满足实验人员的需求。该系统主要由通信服务器、数据处理模块、信息数据库、文件服务器、Android客户端等模块组成。其中,Android客户端为实验人员定制了简洁实用的即时通信功能,并整合设计了界面友好的消息订阅系统。目前该系统已推出测试版本在EAST实验期间试用,为实验人员提供了便利的交流平台。

关键词： Android 即时通信 XMPP Openfire Servlet