检索结果-南通市图书馆

AVO Analysis and Inversion of Elastic Parameters

在线全文

学校读者我要写书评

暂无评论

AVO Analysis and Inversion of Elastic Parameters

International Symposium on Computer Applications in Geoscience

作者： fang kangan

＜正＞In this paper,the unsimplified zoeppritz equations are used in AVO forward *** the least squares method is used to derive an algorithm for the inversion of elastic parameters,P-wave velocity （α） S-wave veloci...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

基于价格引导的气电联合系统双层优化模型

电网技术 2019年第1期43卷 100-107页

作者：舒康安艾小猛方家琨姚伟文劲宇强电磁工程与新技术国家重点实验室(华中科技大学)

电气联合系统因其清洁性、灵活性引起众多关注,然而燃气电站与P2G(powerto gas)电站作为两个系统的连接者,其行为受实时电价与气价影响。针对这一问题,提出一种基于价格激励的气电联合系统的双层优化模型。该模型同时计及了电网潮流和... 详细信息

电气联合系统因其清洁性、灵活性引起众多关注,然而燃气电站与P2G(powerto gas)电站作为两个系统的连接者,其行为受实时电价与气价影响。针对这一问题,提出一种基于价格激励的气电联合系统的双层优化模型。该模型同时计及了电网潮流和燃气管网的动态能量流,考虑燃气电站与P2G电站的套利特性,利用价格激励的方式引导其决策行为,从而增加风电消纳、缓解网络拥塞。模型分为上下两层,上层优化目标为电网运行成本最小,下层优化目标则为燃气电站与P2G电站收益最大。为求取所提双层优化模型的最优均衡解,首先采用矩阵表达的形式改写天然气系统暂态能量流方程,其次利用KKT(Karush-Kuhn-Tucker)条件将双层优化问题转换为单层优化问题,再次对KKT条件进行线性化处理,将模型转换成可直接求解的混合整数二次优化问题,最后通过仿真算例验证了所提模型和方法的有效性。

关键词：气电联合系统动态能量流价格信号双层优化 KKT条件

Comorbidities of scars in China:a national study based on hospitalized cases

在线全文

学校读者我要写书评

暂无评论

Burns & Trauma 2021年第1期9卷 433-440页

作者： Weishi Kong Yongqiang Xiao Baoli Wang Zhe Zhu Lunyang Hu Hongtai Tang kangan Wang He fang Ying Shi Jianyan Long Lanxia Gan Haibo Wang Yu Sun Zhaofan Xia Department of Burn Surgery the First Affiliated Hospital of Naval Medical UniversityShanghai 200433P.R.China Burn Institute of PLA Research Unit of key techniques for treatment of burns and combined burns and trauma injuryChinese Academy of Medical SciencesShanghai 200433P.R.China Department of Burn and Plastic Surgery The 970th Hospital of People’s Liberation ArmyYantaiShandong264000China China Standard Medical Information Research Centre Shenzhen 518000P.R.China

Background:Scar comorbidities seriously affect the physical and mental health of patients,but few studies have reported the exact epidemiological characteristics of scar comorbidities in *** study aimed to investigate the prevalence of scar comorbidities in ***:The data of 177,586 scar cases between 2013 and 2018 were obtained from the Hospital Quality Monitoring System based on the 10th edition of the International Classification of Diseases coding *** total distribution of scar comorbidities and their relationship with age,aetiology and body regions were ***:Six comorbidities(contracture,malformation,ocular complications,adhesion,infection and others)were the main *** general,male patients outnumbered females and urban areas outnumbered rural *** proportion of contractures was the highest at 59,028(33.24%).Students,workers and farmers made up the majority of the *** Chinese accounted for the majority of the *** highest proportion of scar contracture occurred at 1–1.9 years of age(58.97%),after which a significant downward trend was ***,starting from 50 years of age,ocular complications increased gradually and significantly,eventually reaching a peak of 34.49%in those aged>80 *** contracture was the most common comorbidity according to aetiology,and the highest proportion was observed in patients who were scalded(29.33%).Contractures were also the most frequent comorbidity in hands(10.30%),lower limbs(6.97%),feet(6.80%)and upper limbs(6.02%).The mean and median hospitalization durations were 12.85 and 8 days,***:Contractures were the most common comorbidities,and different comorbidities tended to occur at different ages and with different causative factors.

关键词： Scar Epidemiology Aetiology Comorbidity Chinese Hospital Quality Monitoring System Hospitalization

个体化导管消融治疗阵发性心房颤动的临床效果

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

中华心律失常学杂志 2015年第2期19卷 129-133页

作者：杨德彦邓华高鹏程康安陈太波程中伟方全中国医学科学院北京协和医院心内科 100730

目的探讨针对阵发性心房颤动（房颤）触发电位进行个体化导管消融的临床效果.方法入选自2010年1月1日至2013年5月31日在北京协和医院心内科首次接受导管消融治疗的阵发性房颤患者,分析首次接受导管消融的阵发性房颤患者.术前接受多次1... 详细信息

目的探讨针对阵发性心房颤动（房颤）触发电位进行个体化导管消融的临床效果.方法入选自2010年1月1日至2013年5月31日在北京协和医院心内科首次接受导管消融治疗的阵发性房颤患者,分析首次接受导管消融的阵发性房颤患者.术前接受多次12导联心电图和/或24h动态心电图检查.通过诱发房颤的房性早搏P波形态预判房颤触发电位起源,消融术中环状导管在自发或诱发房颤时标测到预判起源的肺静脉或腔静脉存在提前电位,则认为房颤触发电位明确.房颤触发电位明确的患者采用简化消融策略（个体化消融组）,其余患者接受标准环双侧肺静脉前庭电隔离术（标准消融组）.全部患者每隔3个月于房颤门诊随访.结果共81例患者[起病年龄（59.2±11.3）岁],23例（女11例）接受个体化导管消融.触发电位起源于左侧肺静脉与右侧肺静脉分别为13例与6例,2例来自上腔静脉,1例来自右侧肺静脉及上腔静脉,1例来自左侧肺静脉及上腔静脉.两组患者手术及X线曝光时间分别为（72.6±10.2）min对（97.6±24.0）min,P=0.001与（21.7±4.2）min对（28.3±10.0）min,P=0.029.平均随访（495.7±187.8）d,个体化消融组患者16例（69.6％）和标准消融组30例（51.7％）首次消融后无房颤/房性心动过速/心房扑动复发,两组窦性心律生存率差异无统计学意义（P=0.167）.结论体表和心内电图指导下的个体化导管消融治疗阵发性房颤的临床效果至少与标准导管消融相当,而手术及X线曝光时间较短.

关键词：心房颤动射频导管消融

实时三维经胸超声心动图测量缩流面积评价主动脉瓣反流

在线全文

学校读者我要写书评

暂无评论

临床超声医学杂志 2008年第3期10卷 148-150页

作者：方理刚 Navin C.NANDA Ming Chon HSIUNG 程康安朱文玲中国医学科学院中国协和医科大学北京协和医院心内科北京市100730 Division of Cardiovascular Disease University of Alabama

目的应用实时三维经胸超声心动图（3D-TTE）测量缩流面积（VCA）评价主动脉瓣反流。方法将56例主动脉瓣反流患者的三维测量的VCA以及二维经胸超声心动图（2D-TTE）测量的缩流宽度与主动脉根部造影和外科手术的主动脉瓣反流程度相比较。... 详细信息

目的应用实时三维经胸超声心动图（3D-TTE）测量缩流面积（VCA）评价主动脉瓣反流。方法将56例主动脉瓣反流患者的三维测量的VCA以及二维经胸超声心动图（2D-TTE）测量的缩流宽度与主动脉根部造影和外科手术的主动脉瓣反流程度相比较。结果3D—TTE测得的VCA与主动脉根部造影和外科手术的主动脉瓣反流程度密切相关（r=0．95），无明显重叠。2D—TTE测得的缩流宽度亦与主动脉根部造影和手术的主动脉瓣反流程度有很好的相关性（r=0．92），但有较多的重叠。以主动脉根部造影和外科手术为主动脉瓣反流程度的标准，三维测得的1～4度主动脉瓣反流的相应VCA分别为≤0．19cm^2，0．2～0．39cm^2，0．4～0．59cm^2，≥0．6cm^2。结论实时3D—TTE彩色多普勒能准确评价主动脉瓣反流，且和主动脉根部造影有很好的相关性。

关键词：超声心动描记术三维实时主动脉瓣反流缩流面积缩流宽度

在线全文

学校读者我要写书评

暂无评论

心房颤动患者左心房结构和功能的无创评估

中国心血管杂志 2022年第2期27卷 182-186页

作者：王佳琪刘永太高鹏杨德彦程康安陈太波程中伟邓华方全中国医学科学院北京协和医学院北京协和医院心内科 100730

心房颤动患者的左心房结构和功能与射频消融治疗术后复发及卒中风险相关。与生化指标相比,影像学评估心脏结构与功能,如采用超声心动图、电子计算机断层扫描和心脏磁共振可提供更多信息,并可用于指导治疗和评估预后。

关键词：心房颤动左心房结构功能

维普期刊数据库博看期刊

Association of Overlapped and Un-overlapped Comorbidities with COVID-19 Severity and Treatment Outcomes: A Retrospective Cohort Study from Nine Provinces in China

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2020年第12期33卷 893-905页

作者： MA Yan ZHU Dong Shan CHEN Ren Bo SHI Nan Nan LIU Si Hong FAN Yi Pin WU Gui Hui YANG Pu Ye BAI Jiang Feng CHEN Hong CHEN Li Ying FENG Qiao GUO Tuan Mao HOU Yong HU Gui Fen HU Xiao Mei HU Yun Hong HUANG Jin HUANG Qiu Hua HUANG Shao Zhen JI Liang JIN Hai Hao LEI Xiao LI Chun Yan LI Min Qing LI Qun Tang LI Xian Yong LIU Hong De LIU Jin Ping LIU Zhang MA Yu Ting MAO Ya MO Liu Fen NA Hui WANG Jing Wei SONG fang Li SUN Sheng WANG Dong Ting WANG Ming Xuan WANG Xiao Yan WANG Yin Zhen WANG Yu Dong WU Wei WU Lan Ping XIAO Yan Hua XIE Hai Jun XU Hong Ming XU Shou fang XUE Rui Xia YANG Chun YANG Kai Jun YUAN Sheng Li ZHANG Gong Qi ZHANG Jin Bo ZHANG Lin Song ZHAO Shu Sen ZHAO Wan Ying ZHENG Kai ZHOU Ying Chun ZHU Jun Teng ZHU Tian Qing ZHANG Hua Min WANG Yan Ping WANG Yong Yan 无 Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical SciencesBeijing 100700China Centre for Health Management and Policy Research School of Public HealthCheeloo College of MedicineShandong UniversityJinan 250012ShandongChina Institute of Information on Traditional Chinese Medicine China Academy of Chinese Medical SciencesBeijing 100700China Department of Tuberculosis The Public Health Clinical Center of ChengduChengdu 610066SichuanChina Department of Infectious Disease Shaanxi Infectious Disease HospitalXi'an 610113ShaanxiChina Department of Infectious Disease Yulin Chinese Medicine HospitalYulin 719000ShaanxiChina President's Office The First Hospital of QiqiharQiqihar 161005HeilongjiangChina Department of Traditional Chinese Medicine Shangluo Central HospitalShangluo 726000ShaanxiChina Department of Traditional Chinese Medicine The People's Hospital of QitaiheQitaihe 154603HeilongjiangChina Department of Scientific Research Xianyang Central HospitalXianyang 712000ShaanxiChina Department of traditional Chinese medicine The First Affiliated Hospital of Anhui University of Traditional Chinese MedicineHefei 230012AnhuiChina Department of Infectious Disease Heping Hospital Affiliated to Changzhi Medical CollegeChangzhi 046000ShanxiChina Department of Traditional Chinese Medicine Langfang Hospital of Chinese MedicineLangfang 065000HeibeiChina Department of Traditional Chinese Medicine Xingtai Hospital of Chinese MedicineXingtai 054001HeibeiChina Department of Traditional Chinese Medicine The People's Hospital of Guangxi Zhuang Autonomous RegionNanning 168600GuangxiChina Department of Traditional Chinese Medicine The First People'sHospital of FangchenggangFangchenggang 538001GuangxiChina Department of Traditional Chinese Medicine Mianyang Hospital of Traditional Chinese MedicineMianyang 621000SichuanChina Department of Traditional Chinese Medicine Liuzhou People's HospitalLiuzhou 545006GansuChina Department of Traditional Chinese Medici

Objective Several COVID-19 patients have overlapping comorbidities. The independent role of each component contributing to the risk of COVID-19 is unknown, and how some non-cardiometabolic comorbidities affect the risk of COVID-19 remains *** A retrospective follow-up design was adopted. A total of 1,160 laboratory-confirmed patients were enrolled from nine provinces in China. Data on comorbidities were obtained from the patients’ medical records. Multivariable logistic regression models were used to estimate the odds ratio(OR) and 95% confidence interval(95% CI) of the associations between comorbidities(cardiometabolic or non-cardiometabolic diseases), clinical severity, and treatment outcomes of *** Overall, 158(13.6%) patients were diagnosed with severe illness and 32(2.7%) had unfavorable outcomes. Hypertension(2.87, 1.30–6.32), type 2 diabetes(T2 DM)(3.57, 2.32–5.49),cardiovascular disease(CVD)(3.78, 1.81–7.89), fatty liver disease(7.53, 1.96–28.96), hyperlipidemia(2.15, 1.26–3.67), other lung diseases(6.00, 3.01–11.96), and electrolyte imbalance(10.40, 3.00–26.10)were independently linked to increased odds of being severely ill. T2 DM(6.07, 2.89–12.75), CVD(8.47,6.03–11.89), and electrolyte imbalance(19.44, 11.47–32.96) were also strong predictors of unfavorable outcomes. Women with comorbidities were more likely to have severe disease on admission(5.46,3.25–9.19), while men with comorbidities were more likely to have unfavorable treatment outcomes(6.58, 1.46–29.64) within two *** Besides hypertension, diabetes, and CVD, fatty liver disease, hyperlipidemia, other lung diseases, and electrolyte imbalance were independent risk factors for COVID-19 severity and poor treatment outcome. Women with comorbidities were more likely to have severe disease, while men with comorbidities were more likely to have unfavorable treatment outcomes.

关键词： Comorbidities COVID-19 Severity Gender Age Treatment outcome

2019冠状病毒病境外输入与武汉确诊病例临床特征分析

在线全文

学校读者我要写书评

暂无评论

哈尔滨医科大学学报 2020年第2期54卷 111-114页

作者：汪雯雯李新成耿莹于方飞王君玮陈宏哈尔滨医科大学附属第二医院呼吸与危重症医学科黑龙江哈尔滨150081

目的探讨境外输入相关2019冠状病毒病(COVID-19)病例与武汉市第一医院COVID-19病例的临床特征。方法回顾性分析2020年1月~4月黑龙江省牡丹江市康安医院82例及武汉市第一医院148例COVID-19病例资料,对患者的年龄、性别、症状、实验室检... 详细信息

目的探讨境外输入相关2019冠状病毒病(COVID-19)病例与武汉市第一医院COVID-19病例的临床特征。方法回顾性分析2020年1月~4月黑龙江省牡丹江市康安医院82例及武汉市第一医院148例COVID-19病例资料,对患者的年龄、性别、症状、实验室检查等临床特征进行分析比较。结果武汉确诊病例与境外输入相关病例在年龄、性别、临床症状(咳嗽、发热、乏力)、实验室检查(淋巴细胞减少、C-反应蛋白升高)、合并病(心血管疾病、糖尿病)方面存在差异。此外,相比于武汉确诊患者,境外输入相关患者的年龄较轻,男性较多,实验室检查异常较明显,两组之间病情程度有区别。结论武汉确诊与境外输入相关患者临床特征存在差异。

关键词： 2019冠状病毒病境外输入临床特征

清肺排毒汤联合西医常规治疗重型新型冠状病毒肺炎50例临床疗效回顾性分析

在线全文

学校读者我要写书评

暂无评论

中医杂志 2021年第20期62卷 1801-1805页

作者：王芳郭旸焦丽雯张新阳梁宁关黎宗星煜栾相佳张磊王晶亚陈仁波李慧珍范逸品赵晨肖芙蓉黄进肖艳华王银珍张林松胡运宏孙盛王明选白卫国马艳史楠楠葛又文张华敏蔺刚王燕平王永炎北京市东城区社区卫生服务管理中心北京市东城区100010 中国中医科学院中医临床基础医学研究所黑龙江省绥化市第一医院黑龙江省传染病防治院中国中医科学院广安门医院中国中医科学院中医药信息研究所黑龙江省哈尔滨市传染病医院广西壮族自治区人民医院邕武医院黑龙江省牡丹江市康安医院山西省晋城市人民医院西南医科大学附属中医医院河北省邢台市中医院河北省承德市中医院四川省遂宁市中心医院中国中医科学院中药研究所

目的回顾性分析清肺排毒汤联合西医常规治疗重型新型冠状病毒肺炎(新冠肺炎)患者的临床疗效。方法收集2020年1月28日至2月26日在黑龙江、广西、河北、山西及四川5个省10家医院服用清肺排毒汤合并西医常规治疗且疗程≥6天的重型新冠肺炎... 详细信息

目的回顾性分析清肺排毒汤联合西医常规治疗重型新型冠状病毒肺炎(新冠肺炎)患者的临床疗效。方法收集2020年1月28日至2月26日在黑龙江、广西、河北、山西及四川5个省10家医院服用清肺排毒汤合并西医常规治疗且疗程≥6天的重型新冠肺炎患者临床资料。提取患者的一般情况、临床症状、实验室检查与影像学检查结果,统计患者治疗3天、6天后临床症状改善情况,计算其核酸转阴时间、肺部病灶吸收率、住院时间、实验室异常指标变化情况。结果共纳入50例重型新冠肺炎病例,男23例(46.0%),女27例(54.0%);年龄24~85岁,中位数(Q1,Q3)为58.0(45.0,67.0)岁,≥60岁者23例(46.0%)。合并症≥1种的患者40例(80.0%),其中合并高血压病16例(32.0%),糖尿病10例(20.0%)。入院时主要症状为咳嗽(35例,70.0%)、发热(32例,64.0%)、乏力(20例,40.0%)、气喘(18例,36.0%)、干咳(15例,30.0%)、厌食(12例,24.0%)。清肺排毒汤合并西医常规治疗3天后,发热、咳嗽及乏力患者显著减少(P<0.05);6天后,发热、乏力、咳嗽、干咳、厌食及气喘的患者均较治疗前显著减少(P<0.05)。服用清肺排毒汤6天后,46例(92.0%)患者肺部病灶显示不同程度的吸收,且白细胞计数、丙氨酸氨基转移酶、门冬氨酸氨基转移酶、乳酸脱氢酶、血沉、C反应蛋白、降钙素原异常升高及淋巴细胞计数降低的患者数量均较治疗前显著减少(P<0.05)。第一次核酸平均转阴时间中位数(Q1,Q3)为10.0(7.26,10.13)天,平均住院时间中位数(Q1,Q3)为19.36天(15.23,24.32)。50例患者住院期间均未发生严重不良事件,均痊愈出院。结论清肺排毒汤联合西医常规治疗可有效改善重型新冠肺炎患者临床症状,且安全性好。

关键词：新型冠状病毒肺炎清肺排毒汤重型住院时间核酸转阴时间回顾性研究