This paper retrospectively analyzes the complicated rectovaginal fistula in 2 cases after the successful treatment. Through literatures collected, with the difficulties and contradictions of the treatment of complicat...This paper retrospectively analyzes the complicated rectovaginal fistula in 2 cases after the successful treatment. Through literatures collected, with the difficulties and contradictions of the treatment of complicated rectovaginal fistula as the starting point, the currently used hanging line method, the advantage and deficiency of surgical treatment in recent years, and the change of treatment method were reviewed. We wish to explore which current treatments could be a better choice.展开更多
China-Middle East:Distance Fade Away! Have you ever wondered to trade with enterprises in the middle-east areas?A newly-emerged e-commerce platform established in China recently could help you realize your business tr...China-Middle East:Distance Fade Away! Have you ever wondered to trade with enterprises in the middle-east areas?A newly-emerged e-commerce platform established in China recently could help you realize your business trip conveniently and effectively. On Dec.17th,2007,Tejari,the biggest B2B on-line e-commerce platform in middle-east area,and ShanghaiMart,展开更多
[目的]评价消癌平注射液联合一线化疗治疗晚期胃癌的疗效及安全性。[方法]检索发表于中国知网(CNKI)、万方数据库(WanFang)、维普数据库(VIP)、Pubmed以及Web of science共5个中英文数据库中有关消癌平注射液联合一线化疗方案治疗晚期...[目的]评价消癌平注射液联合一线化疗治疗晚期胃癌的疗效及安全性。[方法]检索发表于中国知网(CNKI)、万方数据库(WanFang)、维普数据库(VIP)、Pubmed以及Web of science共5个中英文数据库中有关消癌平注射液联合一线化疗方案治疗晚期胃癌的随机对照试验(RCT),检索时间范围设定为各数据库自建库以来至2023年10月27日,对符合纳入排除标准的研究进行偏倚风险评价及Meta分析。[结果]共纳入10项RCT,共包含814例晚期胃癌患者;在近期疗效方面消癌平注射液联合一线化疗方案能够有效提升客观缓解率(ORR)[RR:1.35,95%CI(1.15,1.58),P=0.0002]以及卡氏评分(KPS)[RR:1.62,95%CI(1.16,2.26),P=0.005];且3-4级不良反应事件(SAE)发生数量少于单纯化疗[RR:0.32,95%CI(0.06,0.90),P=0.04];在远期生存获益方面,消癌平注射液联合一线化疗方案在无进展生存期(PFS)[HR:0.32,95%CI(0.17,0.62),P=0.0007]以及总生存期(OS)[HR:0.33,95%CI(0.16,0.65),P=0.002]方面均优于单纯化疗;GRADE分级结果显示,ORR、KPS、PFS、OS为低等级质量证据,SAE为极低等级质量证据。[结论]消癌平注射液联合一线化疗具有良好的临床疗效及安全性,但纳入文献的方法学质量较低,尚需要更加全面的大样本、多中心、随机双盲对照实验进行验证。展开更多
同时定位与地图构建(simultaneous localization and mapping,SLAM)作为计算机视觉中的热门方向,在无人驾驶、移动机器人等领域中发挥着重要的作用。由于线特征在低纹理环境下的优势,越来越多的研究人员利用点线特征融合的方法提高SLAM...同时定位与地图构建(simultaneous localization and mapping,SLAM)作为计算机视觉中的热门方向,在无人驾驶、移动机器人等领域中发挥着重要的作用。由于线特征在低纹理环境下的优势,越来越多的研究人员利用点线特征融合的方法提高SLAM系统的精度和鲁棒性。文中首先简要阐述了传统的点特征SLAM系统在低纹理环境下的局限性,并对现有的视觉SLAM综述文献进行了总结;随后,对经典的点线SLAM方案进行了介绍,并总结了点线特征融合在前端、后端、闭环检测中的研究进展;最后,对点线SLAM未来的发展方向进行了展望。展开更多
Although several years delayed than its initial plan, extreme UV lithography (EUVL) with 13.5nm wavelength has been finally implemented into high volume manufacture (HVM) of mainstream semiconductor industry since 201...Although several years delayed than its initial plan, extreme UV lithography (EUVL) with 13.5nm wavelength has been finally implemented into high volume manufacture (HVM) of mainstream semiconductor industry since 2018. With the delivery and installation of ASML EUV scanners in those giant Fab players like Samsung, TSMC and Intel, EUV lithography is becoming a sort of industry standard exposure metrology for those critical layers of advanced technology nodes beyond 7nm. Although ASML NXE EUVL scanner is the only commercialized EUV exposure system available on the market, its development is the concentration of all essence from worldwide industrial and academic collaboration. It is becoming more and more important not only for fab runners but also for main stream fabless design houses to understand and participate the progress of EUVL. In this review, working principles, module structures and technical challenges have been briefly discussed regarding each EUV subsystem, including light source, reflection mirrors and system, reticle module as well as photoresist development. EUV specific issues of light intensity, defectivity within reflection system, line edge roughness (LER) and mask 3D effects have been focused respectively and promising solutions have been summarized as well.展开更多
Russian telecommunications market develops rapidly in recent years.Currently,the number of Russian telephone users has achieved 195 million,which is 5.5 times of that of 2000;telephone penetration rate has reached 137...Russian telecommunications market develops rapidly in recent years.Currently,the number of Russian telephone users has achieved 195 million,which is 5.5 times of that of 2000;telephone penetration rate has reached 137%.The achievements of Russian telecommunications industry rely on the recovery of Russian economy,and link closely with the reforms in telecommunications sector.展开更多
The cortical bone trajectory(CBT) is a novel technique in lumbar fixation and fusion.The unique caudocephalad and medial-lateral screw trajectories endow it with excellent screw purchase for vertebral fixation via a m...The cortical bone trajectory(CBT) is a novel technique in lumbar fixation and fusion.The unique caudocephalad and medial-lateral screw trajectories endow it with excellent screw purchase for vertebral fixation via a minimally invasive method.The combined use of CBT screws with transforaminal or posterior lumbar interbody fusion can treat a variety of lumbar diseases,including spondylolisthesis or stenosis,and can also be used as a remedy for revision surgery when the pedicle screw fails.CBT has obvious advantages in terms of surgical trauma,postoperative recovery,prevention and treatment of adjacent vertebral disease,and the surgical treatment of obese and osteoporosis patients.However,the concept of CBT internal fixation technology appeared relatively recently;consequently,there are few relevant clinical studies,and the long-term clinical efficacy and related complications have not been reported.Therefore,large sample and prospective studies are needed to further reveal the long-term complications and fusion rate.As a supplement to the traditional pedicle trajectory fixation technique,the CBT technique is a good choice for the treatment of lumbar diseases with accurate screw placement and strict indications and is thus deserving of clinical recommendation.展开更多
残障人士是无障碍旅游市场的核心,深入理解残障人士旅游行为是促进这一细分市场发展实践的必要前提。文章聚焦残障人士旅游行为,按照旅游者决策过程和旅游者行为影响因素系统梳理了源自Web of science和Scopus数据库的78篇英文文献,构...残障人士是无障碍旅游市场的核心,深入理解残障人士旅游行为是促进这一细分市场发展实践的必要前提。文章聚焦残障人士旅游行为,按照旅游者决策过程和旅游者行为影响因素系统梳理了源自Web of science和Scopus数据库的78篇英文文献,构建了残障人士旅游行为研究框架并对未来研究进行展望。研究发现:研究样本选择往往不区分残障类型,主要分布在亚欧、美洲等发达国家和地区;研究内容碎片化,研究缺少理论支撑,研究方法多样化,数据获取以问卷调查和访谈为主;残障人士旅游决策过程比一般游客多经历“接受与重新融和”和“协商”的过程,其行为受到旅游者特征、群体支持、旅游服务、社会支持、辅助工具等五个因素的影响。未来研究应吸取多学科研究范式和理论依据,考虑社会和文化的差异性,重视残障人士的旅游经历和心理活动,按照残障类型进行研究。展开更多
文摘This paper retrospectively analyzes the complicated rectovaginal fistula in 2 cases after the successful treatment. Through literatures collected, with the difficulties and contradictions of the treatment of complicated rectovaginal fistula as the starting point, the currently used hanging line method, the advantage and deficiency of surgical treatment in recent years, and the change of treatment method were reviewed. We wish to explore which current treatments could be a better choice.
文摘China-Middle East:Distance Fade Away! Have you ever wondered to trade with enterprises in the middle-east areas?A newly-emerged e-commerce platform established in China recently could help you realize your business trip conveniently and effectively. On Dec.17th,2007,Tejari,the biggest B2B on-line e-commerce platform in middle-east area,and ShanghaiMart,
文摘[目的]评价消癌平注射液联合一线化疗治疗晚期胃癌的疗效及安全性。[方法]检索发表于中国知网(CNKI)、万方数据库(WanFang)、维普数据库(VIP)、Pubmed以及Web of science共5个中英文数据库中有关消癌平注射液联合一线化疗方案治疗晚期胃癌的随机对照试验(RCT),检索时间范围设定为各数据库自建库以来至2023年10月27日,对符合纳入排除标准的研究进行偏倚风险评价及Meta分析。[结果]共纳入10项RCT,共包含814例晚期胃癌患者;在近期疗效方面消癌平注射液联合一线化疗方案能够有效提升客观缓解率(ORR)[RR:1.35,95%CI(1.15,1.58),P=0.0002]以及卡氏评分(KPS)[RR:1.62,95%CI(1.16,2.26),P=0.005];且3-4级不良反应事件(SAE)发生数量少于单纯化疗[RR:0.32,95%CI(0.06,0.90),P=0.04];在远期生存获益方面,消癌平注射液联合一线化疗方案在无进展生存期(PFS)[HR:0.32,95%CI(0.17,0.62),P=0.0007]以及总生存期(OS)[HR:0.33,95%CI(0.16,0.65),P=0.002]方面均优于单纯化疗;GRADE分级结果显示,ORR、KPS、PFS、OS为低等级质量证据,SAE为极低等级质量证据。[结论]消癌平注射液联合一线化疗具有良好的临床疗效及安全性,但纳入文献的方法学质量较低,尚需要更加全面的大样本、多中心、随机双盲对照实验进行验证。
文摘同时定位与地图构建(simultaneous localization and mapping,SLAM)作为计算机视觉中的热门方向,在无人驾驶、移动机器人等领域中发挥着重要的作用。由于线特征在低纹理环境下的优势,越来越多的研究人员利用点线特征融合的方法提高SLAM系统的精度和鲁棒性。文中首先简要阐述了传统的点特征SLAM系统在低纹理环境下的局限性,并对现有的视觉SLAM综述文献进行了总结;随后,对经典的点线SLAM方案进行了介绍,并总结了点线特征融合在前端、后端、闭环检测中的研究进展;最后,对点线SLAM未来的发展方向进行了展望。
文摘Although several years delayed than its initial plan, extreme UV lithography (EUVL) with 13.5nm wavelength has been finally implemented into high volume manufacture (HVM) of mainstream semiconductor industry since 2018. With the delivery and installation of ASML EUV scanners in those giant Fab players like Samsung, TSMC and Intel, EUV lithography is becoming a sort of industry standard exposure metrology for those critical layers of advanced technology nodes beyond 7nm. Although ASML NXE EUVL scanner is the only commercialized EUV exposure system available on the market, its development is the concentration of all essence from worldwide industrial and academic collaboration. It is becoming more and more important not only for fab runners but also for main stream fabless design houses to understand and participate the progress of EUVL. In this review, working principles, module structures and technical challenges have been briefly discussed regarding each EUV subsystem, including light source, reflection mirrors and system, reticle module as well as photoresist development. EUV specific issues of light intensity, defectivity within reflection system, line edge roughness (LER) and mask 3D effects have been focused respectively and promising solutions have been summarized as well.
文摘Russian telecommunications market develops rapidly in recent years.Currently,the number of Russian telephone users has achieved 195 million,which is 5.5 times of that of 2000;telephone penetration rate has reached 137%.The achievements of Russian telecommunications industry rely on the recovery of Russian economy,and link closely with the reforms in telecommunications sector.
基金Supported by The Joint Project of Chongqing Health Commission and Science and Technology Bureau,No.2022QNXM066The Top-notch Young Talent Project of Chongqing Traditional Chinese Medicine Hospital,No. CQSZYY2020008。
文摘The cortical bone trajectory(CBT) is a novel technique in lumbar fixation and fusion.The unique caudocephalad and medial-lateral screw trajectories endow it with excellent screw purchase for vertebral fixation via a minimally invasive method.The combined use of CBT screws with transforaminal or posterior lumbar interbody fusion can treat a variety of lumbar diseases,including spondylolisthesis or stenosis,and can also be used as a remedy for revision surgery when the pedicle screw fails.CBT has obvious advantages in terms of surgical trauma,postoperative recovery,prevention and treatment of adjacent vertebral disease,and the surgical treatment of obese and osteoporosis patients.However,the concept of CBT internal fixation technology appeared relatively recently;consequently,there are few relevant clinical studies,and the long-term clinical efficacy and related complications have not been reported.Therefore,large sample and prospective studies are needed to further reveal the long-term complications and fusion rate.As a supplement to the traditional pedicle trajectory fixation technique,the CBT technique is a good choice for the treatment of lumbar diseases with accurate screw placement and strict indications and is thus deserving of clinical recommendation.
文摘残障人士是无障碍旅游市场的核心,深入理解残障人士旅游行为是促进这一细分市场发展实践的必要前提。文章聚焦残障人士旅游行为,按照旅游者决策过程和旅游者行为影响因素系统梳理了源自Web of science和Scopus数据库的78篇英文文献,构建了残障人士旅游行为研究框架并对未来研究进行展望。研究发现:研究样本选择往往不区分残障类型,主要分布在亚欧、美洲等发达国家和地区;研究内容碎片化,研究缺少理论支撑,研究方法多样化,数据获取以问卷调查和访谈为主;残障人士旅游决策过程比一般游客多经历“接受与重新融和”和“协商”的过程,其行为受到旅游者特征、群体支持、旅游服务、社会支持、辅助工具等五个因素的影响。未来研究应吸取多学科研究范式和理论依据,考虑社会和文化的差异性,重视残障人士的旅游经历和心理活动,按照残障类型进行研究。
