目的探讨老年自身免疫性肝炎(AIH)患者的临床特征及自身抗体水平。方法回顾性分析2013年1月至2018年1月期间首都医科大学附属北京佑安医院肝病免疫科收治的112例AIH患者的临床资料,按年龄分为老年组(≥60岁,33例)和中青年组(<60岁,79...目的探讨老年自身免疫性肝炎(AIH)患者的临床特征及自身抗体水平。方法回顾性分析2013年1月至2018年1月期间首都医科大学附属北京佑安医院肝病免疫科收治的112例AIH患者的临床资料,按年龄分为老年组(≥60岁,33例)和中青年组(<60岁,79例)。统计分析2组患者临床资料、生化指标和自身抗体指标。采用SPSS 16.0软件进行数据处理,根据数据类型,组间比较分别采用t检验、Mann-Whitney检验或χ~2检验。结果老年组患者乏力(54.5%vs78.5%)和恶心呕吐(18.2%vs 39.2%)症状患者显著少于中青年组,肝硬化(36.4%vs 17.7%)及合并肝外自身免疫病(33.3%vs 16.5%)患者显著多于中青年组,老年患者血小板计数[(155.2±76.1)×109/L vs (186.2±77.2)×109/L]显著低于中青年组,血尿素氮[(5.1±1.6) vs (4.4±1.3)mmol/L]及血肌酐[(62.1±16.2) vs (57.5±15.1)μmol/L]浓度显著高于中青年组,差异均有统计学意义(P<0.05)。老年组抗核抗体阳性率高于中青年组(87.9%vs 79.7%),但差异无统计学意义(P>0.05)。结论老年组AIH患者合并肝硬化、肝外免疫病的比例高,肾功能降低,年龄相关的免疫功能紊乱可能影响患者的临床表现。展开更多
0 INTRODUCTION Geohazards in mountainous regions pose significant risks to the construction and safe operation of transportation,water conservancy,and other critical infrastructure projects.Engineering geological inve...0 INTRODUCTION Geohazards in mountainous regions pose significant risks to the construction and safe operation of transportation,water conservancy,and other critical infrastructure projects.Engineering geological investigations are crucial for disaster prevention and mitigation.展开更多
The identification and characterization of concealed in-situ rock blocks on high-steep slope exposures are critical in rock engineering,but remain challenging.This study employs advanced UAV-based photogrammetry to ca...The identification and characterization of concealed in-situ rock blocks on high-steep slope exposures are critical in rock engineering,but remain challenging.This study employs advanced UAV-based photogrammetry to capture high-resolution discontinuity data and develops a fully automated rock block extraction method consisting of three steps:(1)determination of free face and non-free fracture intersections,(2)surface search for rock blocks on free face.and(3)extraction and analysis of rock blocks.This approach simplifies the determination of discontinuity intersections while maintaining high accuracy.By incorporating all types of discontinuities contributing to rock block formation,the method enables precise in-situ rock block identification and extraction.Application to a rock slope in China,produced results consistent with the rock blocks observed in the 3D model,highlighting its accuracy and practical value.展开更多
文摘目的探讨老年自身免疫性肝炎(AIH)患者的临床特征及自身抗体水平。方法回顾性分析2013年1月至2018年1月期间首都医科大学附属北京佑安医院肝病免疫科收治的112例AIH患者的临床资料,按年龄分为老年组(≥60岁,33例)和中青年组(<60岁,79例)。统计分析2组患者临床资料、生化指标和自身抗体指标。采用SPSS 16.0软件进行数据处理,根据数据类型,组间比较分别采用t检验、Mann-Whitney检验或χ~2检验。结果老年组患者乏力(54.5%vs78.5%)和恶心呕吐(18.2%vs 39.2%)症状患者显著少于中青年组,肝硬化(36.4%vs 17.7%)及合并肝外自身免疫病(33.3%vs 16.5%)患者显著多于中青年组,老年患者血小板计数[(155.2±76.1)×109/L vs (186.2±77.2)×109/L]显著低于中青年组,血尿素氮[(5.1±1.6) vs (4.4±1.3)mmol/L]及血肌酐[(62.1±16.2) vs (57.5±15.1)μmol/L]浓度显著高于中青年组,差异均有统计学意义(P<0.05)。老年组抗核抗体阳性率高于中青年组(87.9%vs 79.7%),但差异无统计学意义(P>0.05)。结论老年组AIH患者合并肝硬化、肝外免疫病的比例高,肾功能降低,年龄相关的免疫功能紊乱可能影响患者的临床表现。
基金financially supported by the National Key R&D Program of China(No.2022YFC3080200)。
文摘0 INTRODUCTION Geohazards in mountainous regions pose significant risks to the construction and safe operation of transportation,water conservancy,and other critical infrastructure projects.Engineering geological investigations are crucial for disaster prevention and mitigation.
基金supported by the National Key R&D Program of China(Grant No.2022YFC3080200)。
文摘The identification and characterization of concealed in-situ rock blocks on high-steep slope exposures are critical in rock engineering,but remain challenging.This study employs advanced UAV-based photogrammetry to capture high-resolution discontinuity data and develops a fully automated rock block extraction method consisting of three steps:(1)determination of free face and non-free fracture intersections,(2)surface search for rock blocks on free face.and(3)extraction and analysis of rock blocks.This approach simplifies the determination of discontinuity intersections while maintaining high accuracy.By incorporating all types of discontinuities contributing to rock block formation,the method enables precise in-situ rock block identification and extraction.Application to a rock slope in China,produced results consistent with the rock blocks observed in the 3D model,highlighting its accuracy and practical value.
