检索结果-南通市图书馆

Development and engineering application of integrated safety monitoring systems for China’s high-speed trains

Transportation Safety and Environment 2024年第2期6卷 36-44页

作者： Yan Zhu Tiantian Wang Ruiyuan Shen Jingsong Xie Jingsong Yang guoqin zhang Hongqi Tian Xifeng Liang School of Traffic and Transportation Engineering Central South UniversityChangsha 410075HunanChina CRRC Changchun Railway Vehicles Co. LtdChangchun 130062JilinChina China State Railway Group Co. Ltd.Beijing 100084China

With the improvement of the running speed of China’s high-speed trains,the demands for running status monitoring and security assurance of High-speed Electric Multiple Units(EMU)have increased significantly.However,the current safety monitoring systems are independent,which is not conducive to the comprehensive monitoring and information sharing of the whole vehicle.The temperature monitoring of running gear is insensitive to early failures.How to develop a train operation safety monitoring system with strong engineering implementation and high integration is a key problem to be solved.For the monitoring of running stationarity,frame stability and running gear health of China’s high-speed trains,an integrated safety monitoring system framework is designed,and the logic and algorithm for the diagnosis of stationarity,stability and health states of rotating parts are constructed.Monitoring software which fused the temperature,high and low frequency vibration data is developed,and the design and installation of the vibration temperature composite sensors are completed.The research results have realized the integration and comprehensive processing of multiple monitoring systems,completed the improvement from single component and vehicle-level safety monitoring to multi-system,train-level and interactive monitoring.In the process of real vehicle application,the developed monitoring system acquires the vehicle operation status data accurately and in real time.The constructed diagnosis algorithm and logic evaluates the vehicle operation status accurately and in a timely manner,and avoids the progression from fault to accident.The research results show that the integrated safety monitoring system can provide technical support for train operation safety.

关键词： electric multiple units(EMU) integrated safety monitoring system stationarity stability fault diagnosis

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

监狱羁押人群中两种结核分枝杆菌潜伏感染检测结果不一致原因及预防性治疗效果分析

引用

中国防痨杂志 2024年第1期46卷 45-53页

作者：张国钦魏文亮张志张玉华钟达张帆天津市结核病控制中心研究室天津300041 天津市结核病控制中心团检科天津300041 天津市结核病控制中心门诊部天津300041 天津市结核病控制中心办公室天津300041

目的:分析羁押人群中γ-干扰素释放试验(IGRA)和结核菌素皮肤试验(TST)结果差异的相关因素,以及预防性治疗对肺结核发病的效果。方法:采用社区随机对照试验,选取某市5所监狱,每所监狱以监区为单位分为对照组和干预组。结核分枝杆菌检测... 详细信息

目的:分析羁押人群中γ-干扰素释放试验(IGRA)和结核菌素皮肤试验(TST)结果差异的相关因素,以及预防性治疗对肺结核发病的效果。方法:采用社区随机对照试验,选取某市5所监狱,每所监狱以监区为单位分为对照组和干预组。结核分枝杆菌检测于2016年7—8月进行,对照组981例,采用常规结核病防治措施;干预组981例,在常规措施基础上采用IGRA和TST检测结核分枝杆菌潜伏感染,并对IGRA阳性者实施自愿的预防性治疗。收集所有研究对象的流行病学资料,每年定期开展X线胸片检查。分析IGRA和TST结果的一致性及相关因素;对比干预组和对照组3年内肺结核发病情况。结果:IGRA和TST两种方法判读结果一致率为77.93%(745/956)。BCG卡痕(OR=1.477,95%CI:1.068~2.043)是两种检测方法结果差异的相关因素。共计157例IGRA阳性者接受并均完成了预防性治疗,随访3年中发病率为0.00%(0/157),其他未预防性服药者发病率为2.05%(7/342),差异无统计学意义(χ^(2)=3.259,P=0.071);IGRA阴性者中,发病率为0.00%(0/460),低于IGRA阳性未服药者的发病率[2.05%(7/342)],差异有统计学意义(χ^(2)=9.498,P=0.002);最终干预组肺结核发病率为0.71%(7/981),对照组发病率为1.22%(12/981),差异无统计学意义(χ^(2)=1.329,P=0.249)。结论:在羁押人群中,BCG接种史是IGRA和TST差异的主要影响因素;应用IGRA进行结核分枝杆菌潜伏感染检测并对阳性者开展预防性治疗可有效减少狱内肺结核的发病。

关键词：分枝杆菌,结核结核菌素试验监狱诊断,鉴别

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

Dynamic analysis of urban spatial expansion and its determinants in Xiamen Island

引用

Journal of Geographical Sciences 2011年第3期21卷 503-520页

作者： LI Xinhu LIN Tao zhang guoqin XlAO Lishan ZHAO Qianjun CUI Shenghui Key Lab of Urban Environment and Health Institute of Urban Environment CAS Xiamen Key Lab of Urban Metabolism Xiamen 361021 Fujian China Institute of Remote Sensing Applications CAS Beijing 100101 China

Most of the world＇s cities are concentrated in coastal areas. As a special geographical component of the coastal system, island urban spatial expansion is the outcome of interactions between city development and the physical environment. This paper takes Xiamen Island, located in Southeastern China, as an example to analyze island urban spatial expansion and its determinants by combining an analysis of the literature on urban development policies, urban overall plans, population growth and industrial development, with geographical information analysis using historical maps and remote sensing photographs. Firstly, we reviewed the history of the Xiamen City development during the last 100 years, which can be divided into four periods： the embryonic modern city and early development from 1908 to 1949; administrative boundary expansion and infrastructure development from 1950 to 1979; special economic zone construction and rapid urbanization from 1980 to 2003; and Bay City construction since 2003. The dynamic changes to the coastline, island shape, built-up area, transportation, administrative division, and major land use type conversion which occurred during approximately the past 100 years were analyzed and the characteristics of the island urban spatial expansion were concluded： early expansion from a central point, followed by expansion along a section of coastline, and expansion from the coastline inland. Secondly, we discussed the potential determinants of island urban spatial expansion including administrative division adjustment, urban master planning revision, industrial development, topographical factors, coastal area reclamation, transportation expansion, and population growth. Finally, the effects of each potential determinant on island urban spatial expansion were concluded. Island urban spatial expansion is the result of a synthesis of natural and socio-economic factors which are not independent but interacting. Built-up area expansion is the major driver of island land cover and land use changes. By th

关键词： island urbanization spatial expansion determinants Xiamen

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

2013—2022年白银市艾滋病检测实验室网络建设及运行情况分析

引用

职业卫生与病伤 2024年第2期39卷 95-101页

作者：王彦博卢旭升张国琴董金钰白银市疾病预防控制中心甘肃白银730900

目的全面掌握白银市艾滋病检测实验室网络建设及运行情况,分析存在的问题及原因,为今后艾滋病检测实验室网络建设及管理提供科学依据。方法对2022年以前建立的艾滋病检测实验室从实验室基本情况、生物安全、HIV相关检测项目开展情况等... 详细信息

目的全面掌握白银市艾滋病检测实验室网络建设及运行情况,分析存在的问题及原因,为今后艾滋病检测实验室网络建设及管理提供科学依据。方法对2022年以前建立的艾滋病检测实验室从实验室基本情况、生物安全、HIV相关检测项目开展情况等方面进行调查,汇总2013—2022年艾滋病实验室信息管理系统网络直报数据和HIV抗体血清学能力验证考核资料,使用SPSS 19.0软件进行统计分析,构成比的比较采用χ^(2)检验、Fisher确切概率法、χ^(2)趋势检验,以P<0.05为差异有统计学意义。结果截至2022年白银市共建成艾滋病检测实验室107家,其中确证(筛查中心)实验室1家、筛查实验室18家、检测点88家,实现乡级及以上医疗卫生机构及设立检验室的民营医疗机构全覆盖;共有检测人员231人,均为兼职;10年间共筛查检测HIV抗体2106197人次、检出阳性482人次;确证(筛查中心)实验室、筛查实验室、检测点能力验证参加率均为100.0%,平均合格率分别为100.0%、98.3%和99.1%。结论白银市艾滋病检测实验室网络建设初具规模,发挥了应有的作用,将二级以上医疗机构及妇幼保健机构检测点升级建成筛查实验室迫在眉睫;今后应加大医疗机构筛查实验室硬件设备投入,艾滋病定点医院筛查实验室开展艾滋病疗效随访检查;加强实验室质量管理,出台相关措施保证检测队伍稳定。

关键词：艾滋病检测实验室建设运行

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

数字化技术助力儿科急诊能力提升的实践与思考

引用

中国卫生质量管理 2024年第3期31卷 62-65页

作者：李廷俊王淼张国琴黄家虎杨丽上海市儿童医院/上海交通大学医学院附属儿童医院上海200062 上海市皮肤病医院上海200443

针对儿科急救医疗服务体系面临的业务特点、管理模式以及标准化等问题,依托数字化技术,探索建立了一套涵盖院前、院中、院后的儿科急诊全周期管理体系。实践证明,数字化技术对促进儿科急诊能力提升具有重要作用,但应重视医疗数据的有效... 详细信息

针对儿科急救医疗服务体系面临的业务特点、管理模式以及标准化等问题,依托数字化技术,探索建立了一套涵盖院前、院中、院后的儿科急诊全周期管理体系。实践证明,数字化技术对促进儿科急诊能力提升具有重要作用,但应重视医疗数据的有效利用和医疗风险评估,探索建立临床辅助决策体系,关注儿童全周期健康管理。

关键词：数字化建设儿科急诊能力医疗风险

来源：

维普期刊数据库

同方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

Tuberculosis/HIV Coinfection and Treatment Trends-China, 2015−2019

引用

China CDC weekly 2020年第48期2卷 924-928页

作者： Eryong Liu Qian Wang guoqin zhang Lin Zhou Mingting Chen National Center for Tuberculosis Control and Prevention China CDCBeijingChina Tianjin Center for Tuberculosis Control TianjinChina

Introduction:New data has become available on the implementation of tuberculosis/human immunodeficiency virus(TB/HIV)two-way screening and anti-TB treatment for TB/HIV coinfected patients in China from 2015 to 2019,which can be used to propose key strategies for further TB/HIV prevention and treatment.Methods:The report on TB/HIV coinfection in the mainland of China from 2015 to 2019 was collected to compare the annual trend and the rate of geographical distribution.Results:From 2015 to 2019,the proportion of TB screening using chest x-ray or sputum examination among HIV-positive people increased from 79.8%to 88.0%(p<0.01).The proportion ranged from 40.7%to 97.1%among various provincial-level administrative divisions(PLADs),with a median of 87.3%.TB prevalence among HIV-positive people decreased from 1.1%to 0.8%(p<0.01)over the 5 years.The proportion of HIV testing among TB patients increased from 46.0%to 64.0%(p<0.01).The prevalence of HIV among TB patients increased from 0.8%to 1.1%(p<0.01).The success rate of anti-TB treatment for TB/HIV patients was 87.6%,and the primary reason for unsuccessful treatment were death(5.3%)and other reason such as availability of only basic treatment options(5.0%).Conclusions and Implications for Public Health Practice:TB/HIV two-way screening in China improved significantly during the 5-year period,however there were large regional differences and gaps in target HIV-screening rates among TB patients,suggesting that two-way screening in some PLADs and the HIV screening among TB patients should be strengthened.Early diagnosis,early treatment,and treatment management of TB/HIV patients should also be strengthened.

关键词： prevention diagnosis treatment

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

口腔科义齿修复耗材管理的信息化建设与应用

引用

医疗装备 2024年第4期37卷 50-53页

作者：张国琴许斌虞水邢恺刘瑞红周祥龙南京医科大学附属泰州人民医院江苏泰州225300

目的探讨口腔义齿修复耗材全流程信息化管理系统在口腔义齿修复耗材精准管理中的应用效果。方法构建义齿修复耗材全流程信息化管理系统,并比较2019年1—12月采用常规管理方式(应用前),以及2020年1—12月采用口腔义齿修复耗材全流程信息... 详细信息

目的探讨口腔义齿修复耗材全流程信息化管理系统在口腔义齿修复耗材精准管理中的应用效果。方法构建义齿修复耗材全流程信息化管理系统,并比较2019年1—12月采用常规管理方式(应用前),以及2020年1—12月采用口腔义齿修复耗材全流程信息化管理系统(应用后)的管理效能、耗材准备时间、医护人员满意度及医院的运营成本。结果应用义齿修复耗材全流程信息化管理系统后,缩短了义齿修复耗材准备时间,提高了医护人员满意度,降低了医院运营成本。结论医用口腔义齿修复耗材全流程信息化管理系统可提高口腔科义齿修复耗材精准化管理成效,降低医院运营成本。

关键词：口腔科义齿修复耗材信息化管理

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

医学本科生对老年痴呆症认识与态度的调查研究

引用

循证护理 2024年第11期10卷 2058-2063页

作者：胡潇文许政威韩朝雨卫柯李世勇张国琴冉明石河子大学医学院护理系新疆832003

目的:了解医学本科生对老年痴呆症的知识水平及态度,并分析知识掌握与态度之间的关系,为提升医学本科生对老年痴呆症的知识水平并增强其同理心提供参考依据。方法:采用分层抽样的方法选取石河子大学医学院486名本科生作为研究对象,采用... 详细信息

目的:了解医学本科生对老年痴呆症的知识水平及态度,并分析知识掌握与态度之间的关系,为提升医学本科生对老年痴呆症的知识水平并增强其同理心提供参考依据。方法:采用分层抽样的方法选取石河子大学医学院486名本科生作为研究对象,采用一般资料调查量表、阿尔茨海默病知识量表(ADKS)以及痴呆态度量表(DAS)进行调查。结果:医学本科生ADKS总分(20.49±4.11)分,DAS总分(89.95±13.69)分,多元线性回归结果显示,专业、年级、是否有老年痴呆症家族史等是本科生ADKS得分的主要影响因素(均P<0.05),共解释变异量57.2%,性别、之前是否学习过老年痴呆症知识、是否有与老人同住的经历等是本科生DAS得分的主要影响因素(均P<0.05),共解释变异量46.7%。结论:医学本科生知识水平较高,说明其对老年痴呆相关知识掌握水平较高,但痴呆态度持中立,待提升。学校课程设置上可以根据态度情况做出适当修改,以提升医学本科生对于老年痴呆症病人治疗与照护的积极性。

关键词：老年痴呆医学本科生知识态度调查研究

来源：

维普期刊数据库博看期刊

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

Spatial patterns of urban green space and its actual utilization status in China based on big data analysis

引用

Big Earth Data 2021年第3期5卷 391-409页

作者： Yiyi Huang Tao Lin guoqin zhang Yongguan Zhu Zhiwei Zeng Hong Ye Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamenChina Coastal and Ocean Management Institute Xiamen UniversityXiamenChina

Urban green space(UGS)is essential for sustainable urbanization and human well-being.The utilization status of UGS is closely related to the provision of ecosystem services for urban residents.Limitations on data availability,however,have led to the absence of a comprehensive approach for evaluating the actual utilization status of UGS at a large scale.Furthermore,differences in actual UGS utilization between intra-urban and peri-urban areas have not received enough attention.This study used big data analysis by combining point of interest(POI)and land use and cover change(LUCC)to quantify the spatial patterns of UGS utilization,and to evaluate the actual utilization status of UGS in 366 cities on the Chinese mainland.We also explored the differences in the actual utilization of UGS in intra-urban and peri-urban areas.The results showed that 94.01%of UGS resources in China had not been utilized.There was a clear pattern of spatial mismatch between the stock and the actual utilization of UGS,especially in the north-western region indicated by the Hu Huanyong Line.The actual utilization rate of UGS was closely related to the regional develop-ment level.There was a certain mismatch between the actual utilization and stock of intraurban green space(IUGS).The hot spots of the actual utilization rate of IUGS were in Yunnan,Guizhou,and Sichuan Provinces in southwestern China.The differ-ences in UGS actual utilization rates between IUGS and peri-urban green space(PUGS)were small in eastern China,but large in south-western and northwestern China.The actual utilization rate of IUGS in most Chinese cities was significantly larger than that of PUGS,indicating that PUGS were not well utilized.Our results provide scientific support for urban and regional planners in targeting specific areas for UGS design and development,and in optimizing future UGS planning in China.

关键词： Urban green space actual utilization status big data spatial pattern China

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

miR-30a-5p/PHTF2 axis regulates the tumorigenesis and metastasis of lung adenocarcinoma

引用

BIOCELL 2024年第4期48卷 581-590页

作者： LIJUAN zhang QINGYIN MENG LI ZHUANG QUAN GONG XIANDA HUANG XUEQIN LI SHIJUAN LI guoqin WANG XICAI WANG Department of Rehabilitation and Palliative Medicine The Third Affiliated Hospital of Kunming Medical UniversityYunnan Cancer HospitalKunmingChina Department of Pathology The Third Affiliated Hospital of Kunming Medical UniversityYunnan Cancer HospitalKunmingChina Emergency Department(Outpatient Chemotherapy Center) The Third Affiliated Hospital of Kunming Medical UniversityYunnan Cancer HospitalKunmingChina Department of Cancer BioTreatment Center The Third Affiliated Hospital of Kunming Medical UniversityYunnan Cancer HospitalKunmingChina Department of Cancer Institute The Third Affiliated Hospital of Kunming Medical UniversityYunnan Cancer HospitalKunmingChina

Background:Lung adenocarcinoma is a very pervasive histological form of lung cancers,and inhibiting metastasis is crucial for effective treatment.In this investigation,we explored the functional interaction of miR-30a-5p and the putative transcription factor 2 of the homeodomain(PHTF2)in dictating the aggressiveness and metastasis of lung adenocarcinoma.Method:We collected clinical samples to evaluate the expression patterns of miR-30a-5p and PHTF2 in lung adenocarcinoma along with normal tissues.Cellular experiments including cell count kit(CCK)-8 growth assay,apoptosis analysis,migration and invasion examinations were performed to assess the aggressiveness of lung adenocarcinoma cells.Furthermore,we examined tumorigenesis and metastasis in a nude mouse model.Results:MiR-30a-5p exhibited downregulation pattern in lung adenocarcinoma samples.Transfection of miR-30a-5p mimic in lung adenocarcinoma cells resulted in the suppression of malignant characteristics.Notably,the administration of miR-30a-5p mimic also curbed tumorigenesis and metastasis of lung adenocarcinoma cells in animal model.Moreover,PHTF2 was found to be a molecular target of miR-30a-5p.Upregulating PHTF2 counteracted the tumor-suppressive effect of the miR-30a-5p mimic.Conclusion:miR-30a-5p functions as a tumor-suppressive molecule while PHTF2 acts as an oncogenic factor in the development and metastasis of lung adenocarcinoma.Therefore,targeting miR-30a-5p and PHTF2 could be developed into a promising therapeutic approach for inhibiting metastasis in lung adenocarcinoma.

关键词： Lung cancer Malignant phenotype Tumor formation Tumor suppressor Oncogene

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

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：