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797例住院患者医院感染横断面调查

实用预防医学 2011年第1期18卷 51-53页

作者：姜亚绒李荣刘苏燕任红月陕西省西安市儿童医院陕西西安710003

目的了解儿童专科医院医院感染现状,为制定医院感染控制措施提供可靠的依据。方法床旁调查与住院病历调查相结合方法,对2010年6月30日的住院患者进行现患率调查。结果调查住院患者797例,现患率为3.89%;感染的部位依次是上呼吸道(64.5%)... 详细信息

目的了解儿童专科医院医院感染现状,为制定医院感染控制措施提供可靠的依据。方法床旁调查与住院病历调查相结合方法,对2010年6月30日的住院患者进行现患率调查。结果调查住院患者797例,现患率为3.89%;感染的部位依次是上呼吸道(64.5%)、下呼吸道(16.1%)、胃肠道(12.9%)。抗菌药物日使用率89.5%,其中一联药物72.4%,共涉及6类24种抗菌药物,用药频率最高的是头孢菌素类,其次是青霉素类,住院患者用药前菌检率为30.3%。结论加强高危科室目标性监测,进一步规范抗菌药物的使用,有效地控制医院感染的发生。

关键词：医院感染横断面调查现患率抗菌药物

The Singularly Perturbed Problem of Vector Integro-differential Equations

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Acta Mathematicae Applicatae Sinica 2010年第2期26卷 267-276页

作者： su-rong Lin Department of Computer Fujian Broadcasting TV University Fuzhou 350003 China

The singularly perturbed boundary value problem of scalar integro-differential equations has been studied extensively by the differential inequality method . However, it does not seem possible to carry this method over to a corresponding nonlinear vector integro-differential equation. Therefore , for n-dimensional vector integro-differential equations the problem has not been solved fully. Here, we study this nonlinear vector problem and obtain some results. The approach in this paper is to transform the appropriate integro-differential equations into a canonical or diagonalized system of two first-order equations.

关键词： Integro-differential equation singular perturbation boundary value problem diagonalization method

基于ECA-Net的双信息流图像字幕生成方法研究

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光电子·激光 2025年第1期36卷 27-35页

作者：刘仲民苏融胡文瑾兰州理工大学电气工程与信息工程学院甘肃省工业过程先进控制重点实验室西北民族大学数学与计算机科学学院

针对图像字幕生成中由于视觉信息不足使生成的描述语句与图像内容不匹配的问题，提出一种基于高效通道注意力(efficient channel attention network, ECA-Net)的双信息流图像字幕生成方法。首先，该方法将图像分割特征作为另一个视觉信... 详细信息

针对图像字幕生成中由于视觉信息不足使生成的描述语句与图像内容不匹配的问题，提出一种基于高效通道注意力(efficient channel attention network, ECA-Net)的双信息流图像字幕生成方法。首先，该方法将图像分割特征作为另一个视觉信息源，采用迭代独立层归一化(iterative independent layer normalization, IILN)模块融合分割特征和网格特征，以双信息流网络提取图像特征；其次，在编码器中添加ECA-Net模块，通过跨通道交互学习图像特征之间的相关性，使预测结果更加关注视觉内容。最后，解码器根据提供的视觉信息和部分生成的字幕预测下一个词组，从而生成准确的字幕。在MSCOCO数据集上进行实验证明，该方法可以增强图像视觉信息之间的依赖性，使生成字幕相关度更高、语法更准确。

关键词：字幕生成通道注意力编解码器双信息流

Protection of Large-scale Wind Power Integration

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电力系统自动化 2012年第8期36卷 132-135页

作者： Cai, rong su, Bin ABB China Corporate Research Center Beijing 100015 China

More and more large capacity wind power will be integrated into power system in the future,and certain technical challenges will emerge due to the fluctuation characteristics of wind power and the complex control of power electronic devices inside the wind turbines(e.g.,low voltage ride through(LVRT)).By comparing a wind power integration grid with a hydropower integration grid,the special transient phenomena caused by the wind power integration is studied and simulation results are ***,the potential impacts on the traditional protection are *** show that the special transient phenomena can decrease the sensitivity,reliability and operation speed of conventional protections.

关键词：风力发电常规保护一体化电力电子器件风力涡轮机电力系统波动特性仿真结果

Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 325-334页

作者： Xinguang Zhu Chenxi Ding Zhe sui Hong su Xu Guo School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

This study primarily investigates the rock fracture mechanism of bottom cushion layer blasting and explores the effects of the bottom cushion layer on rock *** involves analyses of the evolution patterns of blasting stress,characteristics of crack distribution,and rock fracture features in the ***,blasting model experiments were carried out using the dynamic caustics principle to investigate the influence of bottom cushion layers and initiation methods on the integrity of the bottom rock *** experimental results indicate that the combined use of bottom cushion layers and inverse initiation effectively protects the integrity of the bottom rock ***,the process of stress wave propagation and dynamic crack propagation in rocks was simulated using the continuum-discontinuum element method(CDEM)and the Landau explosion source model,with varying thicknesses of bottom cushion *** numerical simulation results indicate that with increasing cushion thickness,the absorption of energy generated by the explosion becomes more pronounced,resulting in fewer cracks in the bottom rock *** illustrates the positive role of the cushion layer in protecting the integrity of the bottom rock mass.

关键词： bottom cushion layer blasting crack propagation continuum-discontinuum element method dynamic stress intensity factor

Wave interaction for a generalized higher-dimensional Boussinesq equation describing the nonlinear Rossby waves

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Journal of Oceanology and Limnology 2024年第5期42卷 1415-1424页

作者： rong su Penghao JI Xiaojun YIN College of Science Inner Mongolia Agricultural UniversityHohhot 010018China

Based on an algebraically Rossby solitary waves evolution model,namely an extended(2+1)-dimensional Boussinesq equation,we firstly introduced a special transformation and utilized the Hirota method,which enable us to obtain multi-complexiton solutions and explore the interaction among the *** wave functions are then employed to infer the influence of background flow on the propagation of Rossby waves,as well as the characteristics of propagation in multi-wave running ***,we generated stereogram drawings and projection figures to visually represent these *** dynamical behavior of these solutions is thoroughly examined through analytical and graphical ***,we investigated the influence of the generalized beta effect and the Coriolis parameter on the evolution of Rossby waves.

关键词： Rossby wave Boussinesq equation Complexiton solution Breather solution

Single-cell Analysis Technologies for Immuno-oncology Research:from Mechanistic Delineation to Biomarker Discovery

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Genomics, Proteomics & Bioinformatics 2021年第2期19卷 191-207页

作者： Zhiliang Bai Graham su rong Fan Department of Biomedical Engineering Yale UniversityNew HavenCT 06511USA State Key Laboratory of Precision Measurement Technology and Instrument Tianjin UniversityTianjin 300072China Yale Stem Cell Center and Yale Cancer Center Yale School of MedicineNew HavenCT 06511USA Human and Translational Immunology Yale School of MedicineNew HavenCT 06511USA

The successes with immune checkpoint blockade(ICB)and chimeric antigen receptor(CAR)-T-cell therapy in treating multiple cancer types have established immunotherapy as a powerful curative option for patients with advanced ***,many patients do not derive benefit or long-term responses,highlighting a pressing need to perform complete investigation of the underlying mechanisms and the immunotherapy-induced tumor regression or *** recent years,a large number of single-cell technologies have leveraged advances in characterizing immune system,profiling tumor microenvironment,and identifying cellular heterogeneity,which establish the foundations for lifting the veil on the comprehensive crosstalk between cancer and immune system during *** this review,we introduce the applications of the most widely used single-cell technologies in furthering our understanding of immunotherapies in terms of underlying mechanisms and their association with therapeutic *** also discuss how single-cell analyses help to deliver new insights into biomarker discovery to predict patient response rate,monitor acquired resistance,and support prophylactic strategy development for toxicity ***,we provide an overview of applying cutting-edge single-cell spatial-omics to point out the heterogeneity of tumor–immune interactions at higher level that can ultimately guide to the rational design of next-generation immunotherapies.

关键词： Single-cell analysis Immunotherapy Biomarker discovery Checkpoint blockade CAR-T

Simulation and analysis of O_(2)-CaO jet behavior with different shrouding fuel mediums in electric arc furnace steelmaking

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Journal of Iron and Steel Research International 2020年第11期27卷 1259-1269页

作者： Bing-long Zhang Guang-sheng Wei Run-zao Liu rong Zhu rong-fang su School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083China Beijing rongcheng Jingye Technology Co. Ltd.Beijing 100083China

The O_(2)-CaO jet with shrouding combustion flame demonstrates some advantages in quick melting and effective slag foaming by delivering lime powder deeply into the molten *** the discrete particle model and the eddy dissipation concept model with the detailed chemical kinetic mechanisms(GRI-Mech 3.0),computational fluid dynamics models of the O_(2)-CaO jet with different shrouding fuel mediums injection were ***,the results of the numerical simulation were validated by the measured data of cold test for O_(2)-CaO ***,the interaction between the particles and the gas jet of the O_(2)-CaO jet and the effect of shrouding fuel medium species on the fluid flow characteristics of the O_(2)-CaO jet were *** show that the CaO particles can be effectively heated by the shrouding high-temperature combustion flame and compared with the O_(2)-CaO jet without shrouding gas,the potential core length was increased about 2.5,3.3 and 4.3 times by the shrouding flame generated from CO,CH_(4) and C_(3)H_(8).And with shrouding CH_(4) and C_(3)H_(8) injection,the CaO particles can be clustered together in a long distance,which would be helpful to improve the utilization efficiency of CaO particles.

关键词： O_(2)-CaO jet Shrouding fuel medium Electric arc furnace steelmaking Numerical simulation Cold test CaO particle

国家慢性病综合防控示范区社区层面相关活动难易程度研究

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中国慢性病预防与控制 2018年第4期26卷 283-286页

作者：李晋磊李娟娟靳荣荣张娟苏夏雯马帅邓桂娟沈忠周边峰江宇中国医学科学院北京协和医学院公共卫生学院北京100730

目的了解国家慢性病综合防控示范区街道或乡镇、学校和企事业单位相关活动开展难易程度,为示范区建设提出建议。方法于2017年11-12月在全国265个国家级慢性病综合防控示范区内各随机选取3个街道或乡镇、1个企事业单位和1个学校,问卷调... 详细信息

目的了解国家慢性病综合防控示范区街道或乡镇、学校和企事业单位相关活动开展难易程度,为示范区建设提出建议。方法于2017年11-12月在全国265个国家级慢性病综合防控示范区内各随机选取3个街道或乡镇、1个企事业单位和1个学校,问卷调查各主要负责人主要活动项目执行的难易程度。采用STATA 15.0统计软件进行方差分析。结果街道或乡镇、学校和企事业单位涉及的19项相关活动中,"社区宣传栏宣传慢性病防控知识"得分最高(79.2±14.3分),较易开展;"全民健康生活方式行动示范食堂和餐厅创建"和"全民健康生活方式行动示范单位创建"相对比较困难,得分分别为(57.7±16.8)、(59.9±15.0)分。除"居民可锻炼的健身场所和健康教育活动室社区覆盖","健康指标自助检测点建设"和"全民健康生活方式行动示范社区创建"3项活动在第1批次国家慢性病综合防控示范区的得分较高外,其他活动难易程度得分在3个批次中的差异均无统计学意义(P>0.05)。不同地区之间的街道或乡镇以及学校多数活动的难易度评分差异均有统计学意义(P0.05)。结论对于国家慢性病综合防控示范区建设中较易开展的活动,各示范区可进一步积极探索,创新工作模式;对较难实现的活动,国家可予以一定政策支持,结合亮点地区相关经验进行模式推广,推动全国慢性病示范区建设。

关键词：国家慢性病综合防控示范区慢性病防控社区难易程度