检索结果-南通市图书馆

Practice of Infection Prevention and Control Strategies in Risk Departments during the COVID-19 Epidemic

Advances in Infectious Diseases 2024年第1期14卷 1-12页

作者： Minfang Wang Wenyi Ye jiefeng huang Yuexian Zhu Xuxia Yu Hao huang Fang Xu Bo Jin Ying Yang Tieer Gan Department of Hospital Infection Control The First Affiliated Hospital of Zhejiang Chinese Medical University Zhejiang Provincial Hospital of Traditional Chinese Medicine Hangzhou China Medical Department The First Affiliated Hospital of Zhejiang Chinese Medical University Zhejiang Provincial Hospital of Traditional Chinese Medicine Hangzhou China Department of Orthopaedics & Traumatology The First Affiliated Hospital of Zhejiang Chinese Medical University Zhejiang Provincial Hospital of Traditional Chinese Medicine Hangzhou China Department of Stomatology The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine) Hangzhou China Nursing Department The First Affiliated Hospital of Zhejiang Chinese Medical University Zhejiang Provincial Hospital of Traditional Chinese Medicine Hangzhou China State Key Laboratory for Diagnosis and Treatment of Infectious Diseases The First Affiliated Hospital Zhejiang University School of Medicine Hangzhou China

Objective: To explore the practice and application of infection prevention and control strategies in risk departments during the COVID-19 epidemic, and to formulate the infection prevention and control measures to provide advice and guidance in risk departments. Methods: According to the latest plan of diagnosis and treatment, prevention and control issued by the National Health Commission, expert advice and consensus, combined with the actual situation in our hospital, a series of infection prevention and control measures of COVID-19 in risk department was formulated. Results: During the epidemic period, the prevention and control measures of nine risk departments including emergency operation, anesthesiology, endoscopy center, blood purification center, otolaryngology, stomatology, medical imaging department, medical cosmetology department and pulmonary function room were established from six aspects, including pre-examination and screening, medical technology control, personnel management, personal protection, environmental disinfection, medical waste disposal, etc. Conclusion: During the epidemic period, the infection prevention and control strategy of risk departments is one of the key links to control the spread of the epidemic, and risk departments must pay attention to and strictly implement various infection prevention and control measures.

关键词： COVID-19 Risk Department Infection Prevention and Control Strategy Practice

来源：

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Catalytic enantioselective N-silylation of sulfoximine

引用

Chinese Chemical Letters 2024年第4期35卷 352-356页

作者： Xingfen huang jiefeng Zhu Chuan He Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of CatalysisSouthern University of Science and TechnologyShenzhen 518055China Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal UniversityHangzhou 311121China

A rhodium/diphosphine-catalyzed asymmetric cross-dehydrogenative coupling between sulfoximines and dihydrosilanes has been achieved. This is the first report on the enantioselective N-silylation of sulfoximines. The protocol gives access to a variety of Si-stereogenic N-silylated sulfoximines in decent yield(up to 99%) with excellent stereoselectivity(up to 99%), featuring high atom economy, and a cleaner manner with H2as the sole byproduct. The obtained bis-Si-stereogenic monohydrosilane product can be further converted into the corresponding chiral polymer with pendant sulfoximine groups.

关键词： N-Silylation of sulfoximine Chiral silylamine Si-stereogenic silanes Si-CADC Asymmetric catalysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Generation of ultrafast radially polarized pulses through chirp-assisted femtosecond optical parametric amplification

引用

Science China(Physics,Mechanics & Astronomy) 2022年第5期65卷 51-57页

作者： SaiSai Hu jiefeng huang XinHao Ren ChangWen Xu ShiXiang Xu DianYuan Fan HaiZhe Zhong International Collaborative Laboratory of 2D Materials for Optoelectronic Science&Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China

Radially polarized beams characterized by an axially symmetric polarization distribution can be sharply focused to produce strong longitudinal fields in the vicinity.Future applications of these beams will be facilitated by the availability of higher powers and shorter durations.Currently,the ultrafast radially polarized pulse is typically generated via wavefront reconstruction from conventional linearly polarized states.Achievable pulse duration and intensity limits are strictly dependent on extra-cavity optics.Herein,a chirp-assisted near-degenerate type-II parametric process is presented as a pulse-energy-scalable method of accessing ultrafast radially polarized pulses.In a proof-of-principle experiment,the broadband gain balance between the orthogonally polarized signal components was realized via controlling the chirp of the pump pulse.Through an analogous pulseduration transfer effect,the radially polarized signal inherited the temporal and spectral characteristics of the pump pulse and maintained the radial polarization state of each frequency component of the signal.With a shorter pump pulse,the generation of few-cycle radially polarized pulses should be achievable,which may facilitate a wide range of ultrafast applications such as vacuum electron acceleration and high-harmonic generation.

关键词： radially polarized beam optical parametric amplifier ultrafast lasers spectral broadening optical parametric phase

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Natural history and cycle threshold values analysis of COVID-19 in Xiamen City,China

引用

Infectious Disease Modelling 2022年第3期7卷 486-497页

作者： Bin Deng Weikang Liu Zhinan Guo Li Luo Tianlong Yang jiefeng huang Buasiyamu Abudunaibi Yidun Zhang Xue Ouyang Demeng Wang Chenghao Su Tianmu Chen State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics School of Public HealthXiamen UniversityXiamen CityFujian ProvincePeople's Republic of China Xiamen Center for Disease Control and Prevention Xiamen CityFujian ProvincePeople's Republic of China Zhongshan Hospital Fudan University(Xiamen Branch)Xiamen CityFujian ProvincePeople's Republic of China

Objective:This study elaborated the natural history parameters of Delta variant,explored the differences in detection cycle thresholds(Ct)among cases.Methods:Natural history parameters were calculated based on the different onset time and exposure time of the cases.Intergenerational relationships between generations of cases were calculated.Differences in Ct values of cases by gender,age,and mode of detection were analyzed statistically to assess the detoxification capacity of cases.Results:The median incubation period was 4 days;the detection time for cases decreased from 25 to 7 h as the outbreak continued.The average generation time(GT),time interval between transmission generations(TG)and serial interval(SI)were 3.6±2.6 days,1.67±2.11 days and 1.7±3.0 days.Among the Ct values,we found little differences in testing across companies,but there were some differences in the gender of detected genes.The Ct values continuous to decreased with age,but increased when the age was greater than 60.Conclusion:This epidemic was started from aggregation of factories.It is more reasonable to use SI to calculate the effective reproduction number and the time-varying reproduction number.And the analysis of Ct values can improve the positive detection rate and improve prevention and control measures.

关键词： COVID-19 Natural history Cycle threshold value

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于卷积神经网络的无人机成像桥梁裂缝检测方法研究

引用

世界桥梁 2024年第3期52卷 111-118页

作者：张铁志陈萃华黄华周杰峰辽宁科技大学土木工程学院辽宁鞍山114051 山东轨道交通勘察设计院有限公司山东济南250014 四川轻化工大学土木工程学院四川自贡643000

针对桥梁裂缝病害检测困难、裂缝宽度计算精度不高的问题,提出基于卷积神经网络的无人机成像桥梁裂缝检测系统,获取桥梁裂缝图像并提取裂缝,精确计算最大裂缝宽度。该系统改造无人机实现对桥梁底面和侧面图像的采集。首先采用神经网络... 详细信息

针对桥梁裂缝病害检测困难、裂缝宽度计算精度不高的问题,提出基于卷积神经网络的无人机成像桥梁裂缝检测系统,获取桥梁裂缝图像并提取裂缝,精确计算最大裂缝宽度。该系统改造无人机实现对桥梁底面和侧面图像的采集。首先采用神经网络模型筛选出裂缝图像;然后根据所采集到的图像特点,搭建基于卷积神经网络(Convolutional Neural Network,CNN)的裂缝滑动窗口检测(Slide Crack Detection,SCD)模型,进行图像的小窗口滑动识别以提取裂缝,并与采用基于裂缝图像统计特征的改进中值滤波去噪算法对比裂缝提取效果;最后提出裂缝分类及最大裂缝宽度计算方法,并与裂缝实测结果进行对比。结果表明:该无人机成像桥梁裂缝检测系统对裂缝图像的扰动小,裂缝提取效果更精确,该系统检测并计算的最大裂缝宽度相对实测结果误差在0.05 mm以内,满足桥梁裂缝检测要求。

关键词：桥梁工程裂缝检测无人机卷积神经网络滑动窗口识别图像处理最大裂缝宽度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

程序化胸乳入路腔镜颈侧区淋巴结清扫在甲状腺乳头状癌手术中应用的可行性分析

引用

中华医学杂志 2024年第20期104卷 1831-1836页

作者：许楠李梓毓罗勋鹏高恒元黄杰峰王元阳刘新杰徐波深圳市人民医院暨南大学第二临床医学院南方科技大学第一附属医院普通外科甲状腺外科深圳深圳市人民医院暨南大学第二临床医学院南方科技大学第一附属医院普通外科深圳广州市第一人民医院甲状腺外科广州

目的探讨程序化胸乳入路腔镜甲状腺乳头状癌颈侧区淋巴结清扫术(LND)的可行性。方法病例系列研究。回顾性分析2022年1至11月在深圳市人民医院接受程序化胸乳入路腔镜LND治疗的39例甲状腺乳头状癌患者的临床资料。其中男10例, 女29例, 年... 详细信息

目的探讨程序化胸乳入路腔镜甲状腺乳头状癌颈侧区淋巴结清扫术(LND)的可行性。方法病例系列研究。回顾性分析2022年1至11月在深圳市人民医院接受程序化胸乳入路腔镜LND治疗的39例甲状腺乳头状癌患者的临床资料。其中男10例, 女29例, 年龄(35.95±10.17)岁。分析LND时间、总手术时间、术中出血量、术后引流量、术后住院时间及术后并发症等。结果 39例患者中, 单侧甲状腺癌18例, 双侧甲状腺癌21例;单侧LND 35例, 双侧LND 4例。甲状腺癌病灶最大径为(1.48±0.69)cm, 淋巴结转移灶最大径为(1.63±0.58)cm。单侧LND手术时间为(124.11±19.92)min(102～170 min), 总手术时间(226.42±55.68)min(110～390 min)。清扫的淋巴结数目为(32.40±10.44)枚(12～54枚), 转移与检出淋巴结个数207/1 393枚。术后引流量(174.64±82.33)ml(41～350 ml)。术后无颈部血肿, 无皮肤灼伤, 无耸肩障碍。颈部皮肤感觉麻木不适7例, 半年后逐渐缓解。术后出院时间(4.77±1.94)d(3～15 d)。结论程序化胸乳入路腔镜LND治疗甲状腺乳头状癌安全可行, 可提高手术效率, 具有临床应用价值。

关键词：甲状腺肿瘤甲状腺乳头状癌颈侧区淋巴结清扫术腔镜手术胸乳入路

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Modelling the Emerging COVID-19 Epidemic and Estimating Intervention Effectiveness—Taiwan,China,2021

引用

China CDC weekly 2021年第34期3卷 716-719页

作者： Weikang Liu Wenjing Ye Zeyu Zhao Chan Liu Bin Deng Li Luo jiefeng huang Yao Wang Jia Rui Benhua Zhao Yanhua Su Shenggen Wu Kun Chen Jianming Ou Tianmu Chen State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics School of Public HealthXiamen UniversityXiamenFujianChina Fujian Provincial Center for Disease Control and Prevention FuzhouFujianChina

Introduction:The coronavirus disease 2019(COVID-19)pandemic recently affected Taiwan,China.This study aimed to calculate the transmissibility of COVID-19 to predict trends and evaluate the effects of interventions.Methods:The data of reported COVID-19 cases was collected from April 20 to May 26,2021,which included daily reported data(Scenario I)and reported data after adjustment(Scenario II).A susceptibleexposed-symptomatic-asymptomatic-recovered model was developed to fit the data.The effective reproductive number(Reff)was used to estimate the transmissibility of COVID-19.Results:A total of 4,854 cases were collected for the modelling.In Scenario I,the intervention has already taken some effects from May 17 to May 26(the Reff reduced to 2.1).When the Reff was set as 0.1,the epidemic was projected to end on July 4,and a total of 1,997 cases and 855 asymptomatic individuals would have been reported.In Scenario II,the interventions were projected as having been effective from May 24 to May 26(the Reff reduced to 0.4).When the Reff was set as 0.1,the epidemic was projected to end on July 1,and a total of 1,482 cases and 635 asymptomatic individuals would have been reported.Conclusion:The epidemic of COVID-19 was projected to end after at least one month,even if the most effective interventions were applied in Taiwan,China.Although there were some positive effects of intervention in Taiwan,China.

关键词： Taiwan China COV

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于曲柄摇杆机构的仿生海扁虫水下机器人

引用

机械设计 2024年第S1期41卷 27-31页

作者：刘长红吴博淳黄锦山苏杰锋温嘉文陈思霖广州大学机械与电气工程学院广东广州510006 广州大学电子与通信工程学院广东广州510006

针对现阶段MPF波动推进模式仿生机器人在体积、灵活度、运动性能等方面研究较少的问题,设计出了一种仿生海扁虫水下机器人。该机器人使用了一种无急回特性的曲柄摇杆机构作为动力传输零件,通过可传动柔性骨架实现动力的传输,带动鳍条往... 详细信息

针对现阶段MPF波动推进模式仿生机器人在体积、灵活度、运动性能等方面研究较少的问题,设计出了一种仿生海扁虫水下机器人。该机器人使用了一种无急回特性的曲柄摇杆机构作为动力传输零件,通过可传动柔性骨架实现动力的传输,带动鳍条往复摆动,形成稳定的波形推动机器人前进。进一步,通过对曲柄摇杆机构的理论计算和尺寸设计得出实际模型,运用SolidWorks Motion运动仿真进行无急回特性的验证。最后,通过3D打印件等材料制作仿生海扁虫机器人样机,进行水下运动试验,以此验证该设计可行性,在有效减小机器人体积和自身质量的同时,具有更佳的运动性能。

关键词：仿生海扁虫无急回特性曲柄摇杆 MPF波动推进运动性能

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interface sintering engineered superhydrophobic and durable nanofiber composite for high-performance electromagnetic interference shielding

引用

Journal of Materials Science & Technology 2022年第3期98卷 62-71页

作者： Lulu Zhang Junchen Luo Shu Zhang Jun Yan Xuewu huang Ling Wang jiefeng Gao School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal UniversityHangzhou 311121China

Electrically conductive fibric composites(CFCs)have been widely used as electromagnetic interference(EMI)shielding materials;however,it is still difficult to achieve combination of strong interfacial adhesion,outstanding water proof performance,multi-functionality and superb EMI shielding performance for the CFCs.Herein,we report a novel“photo-thermally induced interfacial sintering”method to prepare flexible and superhydrophobic CFCs with excellent interfacial adhesion.The CFC possesses dual conductive network composed of carbon nanofiber and silver nanoparticles(Ag NPs),and a conductivity of 112.1 S/cm,imparting to the material excellent Joule heating performance,revealing an large SE and SSE(59.4 dB and 333.9 dB mm^(-1))of the CFC in the X band,respectively.In addition,the CFC can maintain its superhydrophobicity,high conductivity and excellent EMI shielding performance after cyclic abrasion,stretching and ultrasonication washing.This“interfacial sintering”strategy provides a new way to fabricating multi-functional and durable conductive polymer composite.

关键词： Carbon nanofibers Silver nanoparticles Superhydrophobic Conductive Electromagnetic interference shielding

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

One-Dimensional Magnetic FeCoNi Alloy Toward Low-Frequency Electromagnetic Wave Absorption

引用

Nano-Micro Letters 2022年第10期14卷 260-272页

作者： Bintong Yang jiefeng Fang Chunyang Xu Hui Cao Ruixuan Zhang Biao Zhao Mengqiu huang Xiangyu Wang Hualiang Lv Renchao Che Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438People’s Republic of China Willian G.Lowrie Department of Chemical and Biomolecular Engineering The Ohio State UniversityColumbusOH 43210USA Zhejiang Laboratory Joint-Research Center for Computational MaterialsHangzhou 311100People’s Republic of China

Rational designing of one-dimensional(1D)magnetic alloy to facilitate electromagnetic(EM)wave attenuation capability in low-frequency(2-6 GHz)microwave absorption field is highly desired but remains a significant challenge.In this study,a composite EM wave absorber made of a FeCoNi medium-entropy alloy embedded in a 1D carbon matrix framework is rationally designed through an improved electrospinning method.The 1D-shaped FeCoNi alloy embedded composite demonstrates the high-density and continuous magnetic network using off-axis electronic holography technique,indicating the excellent magnetic loss ability under an external EM field.Then,the in-depth analysis shows that many factors,including 1D anisotropy and intrinsic physical features of the magnetic medium-entropy alloy,primarily contribute to the enhanced EM wave absorption performance.Therefore,the fabricated EM wave absorber shows an increasing effective absorption band of 1.3 GHz in the low-frequency electromagnetic field at an ultrathin thickness of 2 mm.Thus,this study opens up a new method for the design and preparation of high-performance 1D magnetic EM absorbers.

关键词： Medium-entropy magnetic alloy One-dimension Off-axis electronic holography technique Improved electrospinning Lower-frequency electromagnetic wave absorption

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：