目的以术后肝功能不全程度为标准来研究术前吲哚氰绿15 min内滞留率(indocyanine green retention rate at 15 minute,ICG-R15)、综合的终末期肝病模型评分(the integrated model for end-stage liver disease scores,i MELD)和慢性肝...目的以术后肝功能不全程度为标准来研究术前吲哚氰绿15 min内滞留率(indocyanine green retention rate at 15 minute,ICG-R15)、综合的终末期肝病模型评分(the integrated model for end-stage liver disease scores,i MELD)和慢性肝功能不全评分(chronic liver dysfunction scores,CLD)三者之间的相关性。方法回顾性分析61例行手术切除的原发性肝细胞肝癌患者的临床资料,根据肝功能不全程度分为轻、中、重三组,利用脉冲式色素浓度分析法(pulse dyedensitonmetry,PDD)行吲哚氰绿(indocyanine green,ICG)排泄试验,同时计算患者的i MELD及CLD评分。结果随着术后肝功能不全程度的递增,ICG-R15及CLD评分逐渐升高,差异具有统计学意义(P<0.05);ICG-R15与CLD评分相关性明显强于ICG-R15与i MELD评分的相关性(r=0.65,r=0.49)。结论 ICG-R15与CLD评分正向相关性明显强于i MELD评分。展开更多
GNSS广泛地应用于各行各业,但是存在卫星导航信号落地功率低,极易受到各种有意和无意的电磁干扰影响,会对卫星导航应用造成严重的威胁.随着卫星导航的广泛应用,卫星导航信号受干扰问题引起了国际的广泛关注.全球卫星导航系统国际委员会(...GNSS广泛地应用于各行各业,但是存在卫星导航信号落地功率低,极易受到各种有意和无意的电磁干扰影响,会对卫星导航应用造成严重的威胁.随着卫星导航的广泛应用,卫星导航信号受干扰问题引起了国际的广泛关注.全球卫星导航系统国际委员会(International Committee on Global Navigation Satellite Systems,ICG)为此成立了专门的卫星导航干扰检测与削弱(IDM)工作组,旨在开展各国在该领域的政策法规、相关技术及IDM系统建设的研讨与交流.本文介绍和分析了ICG IDM的重要进展及研究态势,并对干扰检测定位理论技术及国内外卫星导航干扰监测系统的研究进展进行了梳理,对深化卫星导航干扰监测的理论与技术研究及保障卫星导航安全具有重要的技术借鉴与研究支撑.展开更多
2016 marked a milestone in the development of the principles and practice of Geodiversity,Geoheritage and related conservation through the establishment of IUGS’s new International Commission on Geoheritage(ICG)at th...2016 marked a milestone in the development of the principles and practice of Geodiversity,Geoheritage and related conservation through the establishment of IUGS’s new International Commission on Geoheritage(ICG)at the 35th International Geological Congress in Cape Town(29th August to 2nd September 2016).This broad subject is fundamental to society’s interaction with the geological sciences,as it concerns all aspects of geological materials and processes,both in a natural and a cultural context and their intrinsic importance for a great range of human activities,including research,education,outreach,cultural value,sustainable development and as part of a shared natural and cultural heritage to be safeguarded for future generations.The establishment of ICG enables the Union to take a true leadership role in this rapidly developing field.展开更多
文摘GNSS广泛地应用于各行各业,但是存在卫星导航信号落地功率低,极易受到各种有意和无意的电磁干扰影响,会对卫星导航应用造成严重的威胁.随着卫星导航的广泛应用,卫星导航信号受干扰问题引起了国际的广泛关注.全球卫星导航系统国际委员会(International Committee on Global Navigation Satellite Systems,ICG)为此成立了专门的卫星导航干扰检测与削弱(IDM)工作组,旨在开展各国在该领域的政策法规、相关技术及IDM系统建设的研讨与交流.本文介绍和分析了ICG IDM的重要进展及研究态势,并对干扰检测定位理论技术及国内外卫星导航干扰监测系统的研究进展进行了梳理,对深化卫星导航干扰监测的理论与技术研究及保障卫星导航安全具有重要的技术借鉴与研究支撑.
文摘2016 marked a milestone in the development of the principles and practice of Geodiversity,Geoheritage and related conservation through the establishment of IUGS’s new International Commission on Geoheritage(ICG)at the 35th International Geological Congress in Cape Town(29th August to 2nd September 2016).This broad subject is fundamental to society’s interaction with the geological sciences,as it concerns all aspects of geological materials and processes,both in a natural and a cultural context and their intrinsic importance for a great range of human activities,including research,education,outreach,cultural value,sustainable development and as part of a shared natural and cultural heritage to be safeguarded for future generations.The establishment of ICG enables the Union to take a true leadership role in this rapidly developing field.
