期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
喷射混凝土早期强度测试方法综述 被引量:2
1
作者 李松涛 王子明 张媛媛 《新型建筑材料》 2023年第9期42-50,共9页
比较分析了现有的喷射混凝土早期强度测试方法,包括直接检测和非直接检测两类方法。直接检测方法有预留试块法、钻芯取样法和棱柱体端部受压测试方法;非直接检测方法包括土壤贯入仪法、十字板剪切仪、螺旋贯入仪、回弹法、超声法、电阻... 比较分析了现有的喷射混凝土早期强度测试方法,包括直接检测和非直接检测两类方法。直接检测方法有预留试块法、钻芯取样法和棱柱体端部受压测试方法;非直接检测方法包括土壤贯入仪法、十字板剪切仪、螺旋贯入仪、回弹法、超声法、电阻率法、Meyco针贯入法、射钉(贯入阻力)法、螺柱驱动法和气动式细钢针贯入法等测试方法。推荐最合理的测试方案是在喷射混凝土抗压强度低于1 MPa时使用Meyco针贯入法,抗压强度为3~28 MPa时使用射钉(贯入)法,抗压强度高于28 MPa时使用钻芯法,这3种测试方法既可以在实验室内,也可以在施工现场对喷射混凝土强度进行连续准确地检测。 展开更多
关键词 喷射混凝土 早期强度 Meyco针贯入法 射钉法 钻芯法 再入时间
下载PDF
Unplanned hospital readmissions after kidney transplantation among patients in Hefei,China:Incidence,causes and risk factors 被引量:2
2
作者 Aiqin Chu Tian Zhang +3 位作者 Yueyan Fang Li Yuan Xiaohong Guan Hailing Zhang 《International Journal of Nursing Sciences》 CSCD 2020年第3期291-296,共6页
Objectives:Unplanned readmissions severely affect a patient's physical and mental well-being after kidney transplantation(KT),which is also independently associated with morbidity.A retrospective study was conduct... Objectives:Unplanned readmissions severely affect a patient's physical and mental well-being after kidney transplantation(KT),which is also independently associated with morbidity.A retrospective study was conducted to identify the incidence,causes and risk factors for unplanned readmission after KT among Chinese patients.Methods:Patients who underwent KT were admitted to the organ transplant center of the Affiliated Hospital of University of Science and Technology of China(2017-2018).Medical records for these patients were obtained through the hospital information system(HIS).Results:In 518 patients,the incidence of unplanned readmissions within 30 days(n=9)was 1.74%,and 90 days(n=64)was 12.35%.The one-year unplanned readmission rate was 22.59%(n=122).Overall,122 patients were readmitted because of infection,renal events,metabolic disturbances,surgical complications,etc.Hemodialysis(OR=10.462,95%CI:1.355-80.748),peritoneal dialysis(OR=8.746,95%CI:1.074-71.238)and length of stay(OR=1.023,95%CI:1.006-1.040)were independent risk factors for unplanned readmissions.Conclusion:Unplanned readmission rates increased with time after KT.Certain risk factors related to unplanned readmissions should be deeply excavated.Targeted interventions for controllable factors to alleviate the rate of unplanned readmissions should be identified. 展开更多
关键词 Kidney transplantation Length of stay Patient readmission Peritoneal dialysis Risk factors
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部