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城市照明 2024年第2期28卷 55-56页

作者：陈春光北京市城市照明管理中心 100078

城市照明起到提高交通运输效率和美化城市夜晚环境的效果。在人行道路以及居住区道路上设置照明的目的是为行人提供舒适和安全的视觉环境,为了满足人民对美好生活的向往,个性化需求的接诉即办工作也越来越重要。本文就照明接诉即办工作... 详细信息

城市照明起到提高交通运输效率和美化城市夜晚环境的效果。在人行道路以及居住区道路上设置照明的目的是为行人提供舒适和安全的视觉环境,为了满足人民对美好生活的向往,个性化需求的接诉即办工作也越来越重要。本文就照明接诉即办工作谈点体会与大家分享。

关键词：城市照明接诉即办主动服务创新服务

病毒性肺炎所致急性呼吸窘迫综合征早期风险模型的构建

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护士进修杂志 2024年第8期39卷 805-811,823页

作者：施文文李泉陈春光宿迁市第一人民医院江苏宿迁223800

目的探讨病毒性肺炎患者所致急性呼吸窘迫综合征(ARDS)的危险因素,并构建其早期风险预测模型。方法回顾性分析,选取2019年4月-2023年4月在我院ICU收治的病毒性肺炎患者400例,依据7∶3比例分为训练集(n=280)和验证集(n=120),根据训练集... 详细信息

目的探讨病毒性肺炎患者所致急性呼吸窘迫综合征(ARDS)的危险因素,并构建其早期风险预测模型。方法回顾性分析,选取2019年4月-2023年4月在我院ICU收治的病毒性肺炎患者400例,依据7∶3比例分为训练集(n=280)和验证集(n=120),根据训练集中患者有无ARDS的发生进行分组,分为ARDS组(n=97)和非ARDS组(n=183)。比较2组患者的临床资料,并采用单因素分析和多因素二元logistic回归分析相关危险因素,利用logistic回归分析建立早期风险预测模型,采用ROC曲线、校准曲线检验模型预测效果,采用验证集的数据绘制2种曲线对模型的预测效能进行外部验证。结果多因素分析结果显示:2组患者年龄(OR=1.057,95%CI=1.021~1.094,P=0.002)、合并糖尿病(OR=3.712,95%CI=1.693~8.141,P=0.001)、肺损伤预测评分(OR=1.375,95%CI=1.121~1.686,P=0.002)、英国国家早期预警评分(OR=1.134,95%CI=1.045~1.230,P=0.003)和肺炎严重指数(OR=1.029,95%CI=1.015~1.043,P<0.001)为病毒性肺炎所致ARDS的独立危险因素(P<0.05),在此基础上建立风险预测模型。模型公式Z=0.055×年龄+1.312×合并糖尿病+0.318×肺损伤预测评分+0.126×英国国家早期预警评分+0.028×肺炎严重指数-16.430。其ROC曲线下面积为0.878(95%CI=0.838~0.919,P<0.001),灵敏度为0.856,特异度为0.803,Youden指数为0.659。结论本模型可有效预测病毒性肺炎患者ARDS的发生,为医护人员制定早期预防病毒性肺炎患者ARDS发生的护理方案提供参考依据,具有良好的早期预警价值。

关键词：病毒性肺炎社区获得性肺炎急性呼吸窘迫综合征早期风险预测模型护理

New electrochemical energy storage systems based on metallic lithium anode the research status,problems and challenges of lithium-sulfur,lithium-oxygen and all solid state batteries

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Science China Chemistry 2017年第11期60卷 1402-1412页

作者： Liangyu Li chunguang chen Aishui Yu Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsInstitut of New EnergyCollaborative Innovation Center of Chemistry for Energy MaterialsFudan UniversityShanghai 200438China

Li-ion batteries have played a key role in the portable electronics and electrification of transport in modern society. Nevertheless,the limited highest energy density of Li-ion batteries is not sufficient for the long-term needs of society. Since lithium is the lightest metal among all metallic elements and possesses the lowest redox potential of.3.04 V vs. standard hydrogen electrode, it delivers the highest theoretical specific capacity of 3860 mA h g^(-1) and a high working voltage of full batteries which causes a great interest in electrochemical energy storage systems. Lithium-sulfur, lithium-oxygen and corresponding all solid state batteries based on metal lithium anode have received widely attention owing to their high energy densities. However, the problems in the cathode,electrolyte and anode of these three systems restrict their practical application. In this review, the research status and problems of these three energy storage systems are summarized and the challenges and future perspectives are also outlined.

关键词：氧化还原电位全固态电池储能系统金属锂电化学负极高能量密度锂离子电池

Optical manipulation of ratio-designable Janus microspheres

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Photonics Research 2024年第6期12卷 1239-1249页

作者： YULU chen CONG ZHAI XIAOQING GAO HAN WANG ZUZENG LIN XIAOWEI ZHOU chunguang HU State Key Laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin 300072China

Angular optical trapping based on Janus microspheres has been proven to be a novel method to achieve controllable *** contrast to natural birefringent crystals,Janus microspheres are chemically synthesized of two compositions with different refractive ***,their structures can be artificially regulated,which brings excellent potential for fine and multi-degree-of-freedom manipulation in the optical ***,it is a considerable challenge to model the interaction of heterogeneous particles with the optical field,and there has also been no experimental study on the optical manipulation of microspheres with such designable refractive index *** the specific structure affects the kinematic properties of Janus microspheres remains ***,we report systematic research on the optical trapping and rotating of various ratio-designable Janus *** employ an efficient T-matrix method to rapidly calculate the optical force and torque on Janus microspheres to obtain their trapped postures and rotational characteristics in the optical *** have developed a robust microfluidic-based scheme to prepare Janus *** experimental results demonstrate that within a specific ratio range,the rotation radii of microspheres vary linearly and the orientations of microsphere are always aligned with the light polarization *** is of great importance in guiding the design of Janus *** their orientations flip at a particular ratio,all consistent with the *** work provides a reliable theoretical analysis and experimental strategy for studying the interaction of heterogeneous particles with the optical field and further expands the diverse manipulation capabilities of optical tweezers.

关键词： polarization ratio refractive

Integrative analysis of tumor stemness and immune microenvironment deciphers novel molecular subtypes in hepatocellular carcinoma

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Genes & Diseases 2024年第5期11卷 81-84页

作者： Zhiyi Wang Shuang chen Dongxiao Li Hui Xu Siyuan Weng Yuyuan Zhang Yuqing Ren chunguang Guo Xiuling Li Zaoqu Liu Xinwei Han Department of Interventional Radiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450052China Department of Gastroenterology Henan Provincial People’s HospitalZhengzhou University People’s HospitalZhengzhouHenan 450004China Center of Reproductive Medicine The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450052China Department of Respiratory and Critical Care Medicine The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450052China Department of Endovascular Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450052China State Key Laboratory of Proteomics Beijing Proteome Research CenterNational Center for Protein Sciences(Beijing)Beijing Institute of LifeomicsBeijing 102206China State Key Laboratory of Medical Molecular Biology Institute of Basic Medical SciencesChinese Academy of Medical SciencesDepartment of PathophysiologyPeking Union Medical CollegeBeijing 100730China

Hepatocellular carcinoma(HCC)is a highly heterogeneous tumor,with dynamic equilibrium and complex interplay between its intricate tumor nature and ambient tumor immune microenvironment(TIME).1 Elegant research has indicated that cancer stem cells,a small subset of neoplastic cells confined within dedicated niches,display stem cell-like properties and interact with cells in TIME,thereby imparting an indelible impact on stemness regulation,tumor heterogeneity,and cancer cell plasticity.2 Previous taxonomies solely from the perspective of stemness or TIME may introduce some degree of bias in the comprehension of HCC carcinogenesis,3,4 and thus it is of paramount importance to systematically consider tumor stemness and TIME as a whole to truly portray the biological landscape of HCC.

关键词： thereby landscape stem

Interfacial Issues of All Solid State Lithium Batteries

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第4期35卷 578-589页

作者： Wang Leidanyang Su Yunmning Liu Siyang chen chunguang Hu Shanming Huang Tao Yu Aishui Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials Fudan University Shanghai 200438 P. R. China Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials Fudan University Shanghai 200438 P. R. China

All solid state lithium battery is a promising next-generation battery system with improved cycle life,energy density,especially ***,its development is greatly hampered by a large impedance between the solid state electrolyte/electrode *** to build an ideal electrolyte/electrode interface to improve the interfacial stability and reduce the interfacial resistance is a huge challenge for improving battery *** paper reviews interfacial problems and introduces the formation mechanism of different interface layers between electrodes and *** addition,the strategies for improving interfacial contact and reducing interfacial resistance are described in ***,the research directions for engineering interfaces in all solid state lithium batteries are proposed.

关键词： Lithium battery all solid state electrolyte electrode interfacial resistance

Substantial thermoelectric enhancement achieved by manipulating the band structure and dislocations in Ag and La co-doped SnTe

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Journal of Advanced Ceramics 2021年第4期10卷 860-870页

作者： Wenjing XU Zhongwei ZHANG chengyan LIU Jie GAO Zhenyuan YE chunguang chen Ying PENG Xiaobo BAI Lei MIAO Guangxi Key Laboratory of Information Material Guangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialsSchool of Material Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004China Department of Materials Science and Engineering SIT Research LaboratoriesInnovative Global ProgramFaculty of EngineeringShibaura Institute of TechnologyTokyo 135-8548Japan

Eco-friendly SnTe based thermoelectric materials are intensively studied recently as candidates to replace PbTe;yet the thermoelectric performance of SnTe is suppressed by its intrinsically high carrier concentration and high thermal *** this work,we confirm that the Ag and La co-doping can be applied to simultaneously enhance the power factor and reduce the thermal conductivity,contributing to a final promotion of figure of *** one hand,the carrier concentration and band offset between valence bands are concurrently reduced,promoting the power factor to a highest value of-2436μW·m^(-1)·K^(-2) at 873 *** the other hand,lots of dislocations(~3.16×10^(7)mm^(-2))associated with impurity precipitates are generated,resulting in the decline of thermal conductivity to a minimum value of 1.87 W·m^(-1)·K^(-1) at 873 *** a result,a substantial thermoelectric performance enhancement up to zT≈1.0 at 873 K is obtained for the sample Sn0.94Ag0.09La0.05Te,which is twice that of the pristine SnTe(zT≈0.49 at 873 K).This strategy of synergistic manipulation of electronic band and microstructures via introducing rare earth elements could be applied to other systems to improve thermoelectric performance.

关键词： SnTe band convergence dislocation Ag and La co-doping thermoelectric performance

Mixed Method for Compressible Miscible Displacement with Dispersion in Porous Media

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Numerical Mathematics A Journal of Chinese Universities(English Series) 2007年第1期16卷 74-82页

作者： chunguang chen Department of Mathematics Ocean University of China Qingdao 266071 China.

Compressible miscible displacement of one fluid by another in porous media is modelled by a nonlinear parabolic system. A finite element procedure is introduced to approximate the concentration of one fluid and the pressure of the mixture. The concentration is treated by a Galerkin method while the pressure is treated by a parabolic mixed finite element method. The effect of dispersion, which is neglected in [1], is considered. Optimal order estimates in L2 are derived for the errors in the approximate solutions.

关键词：互溶驱替有限元分析流体力学离差

近场动力学方程的E-SAV能量守恒格式及其误差分析

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计算数学 2023年第4期45卷 464-482页

作者：翟梦姣陈春光中国海洋大学数学科学学院青岛266100

本文基于E-SAV方法及复化梯形求积公式,为近场动力学方程提出了一类二阶显式的能量守恒格式,并对时间半离散格式进行了严格的误差分析.数值结果验证了格式的能量守恒性及收敛阶.

关键词：近场动力学方程能量守恒 E-SAV方法误差分析

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Whitham方程的SAV能量守恒型格式

中国海洋大学学报（自然科学版） 2022年第S1期52卷 83-90页

作者：翟梦姣陈春光中国海洋大学数学科学学院山东青岛266100

Whitham方程是一种描述无黏流体表面波的微分-积分方程。本文提出了Whitham方程的两种基于标量辅助变量(SAV)方法的能量守恒型数值格式,即SAV龙格-库塔(RK)格式和SAV拉格朗日乘子(LagM)格式。其中SAV-RK是线性格式,可以达到任意阶时间精... 详细信息

Whitham方程是一种描述无黏流体表面波的微分-积分方程。本文提出了Whitham方程的两种基于标量辅助变量(SAV)方法的能量守恒型数值格式,即SAV龙格-库塔(RK)格式和SAV拉格朗日乘子(LagM)格式。其中SAV-RK是线性格式,可以达到任意阶时间精度;SAV-LagM为二阶时间精度格式,并保持原始能量守恒。本文从理论上证明了两种格式均保持能量守恒。空间离散采用傅里叶拟谱方法。数值结果验证了两种格式的能量守恒性和精度。

关键词： Whitham方程能量守恒标量辅助变量方法龙格-库塔方法拉格朗日乘子