期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Integration system research and development for three-dimensional laser scanning information visualization in goaf 被引量:1
1
作者 罗周全 黄俊杰 +2 位作者 罗贞焱 汪伟 秦亚光 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第7期1985-1994,共10页
An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, clo... An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable. 展开更多
关键词 GOAF laser scanning visualization integration system 1 Introduction The goaf formed through underground mining of mineral resources is one of the main disaster sources threatening mine safety production [1 2]. Effective implementation of goaf detection and accurate acquisition of its spatial characteristics including the three-dimensional morphology the spatial position as well as the actual boundary and volume are important basis to analyze predict and control disasters caused by goaf. In recent years three-dimensional laser scanning technology has been effectively applied in goaf detection [3 4]. Large quantities of point cloud data that are acquired for goaf by means of the three-dimensional laser scanning system are processed relying on relevant engineering software to generate a three-dimensional model for goaf. Then a general modeling analysis and processing instrument are introduced to perform subsequent three-dimensional analysis and calculation [5 6]. Moreover related development is also carried out in fields such as three-dimensional detection and visualization of hazardous goaf detection and analysis of unstable failures in goaf extraction boundary acquisition in stope visualized computation of damage index aided design for pillar recovery and three-dimensional detection
下载PDF
GNSS接收机与全站仪控制点恢复测量及精度分析
2
作者 孙玉强 袁兴明 《测绘与空间地理信息》 2021年第4期132-134,138,共4页
主要利用GNSS接收机与全站仪对基坑控制点进行恢复测量,GNSS接收机通过RTK技术在基坑周边重新布设5个控制点,利用全站仪假定方向推算出控制点的坐标,并且分析其相对精度。通过实地观测计算分析,推算出的坐标与基坑中心点位置X方向相差5... 主要利用GNSS接收机与全站仪对基坑控制点进行恢复测量,GNSS接收机通过RTK技术在基坑周边重新布设5个控制点,利用全站仪假定方向推算出控制点的坐标,并且分析其相对精度。通过实地观测计算分析,推算出的坐标与基坑中心点位置X方向相差5 mm、Y方向相差4 mm,恢复后的控制点能够对其他特征点进行详细测设。利用高精度的0.5″级全站仪进行点位测量精度对比分析,点位精度在2 mm范围之内,可以得出工程单位所用的仪器可满足精度,能够用于此类工程点位测设工作。 展开更多
关键词 GNSS接收机 全站仪 基坑 控制点恢复 误差
下载PDF
烤灯联合HACCP方案对四肢皮瓣移植术后康复的影响
3
作者 杨玲玲 熊明燕 江起庭 《中国临床研究》 CAS 2024年第2期320-324,共5页
目的探讨在四肢皮瓣移植术后应用烤灯联合危害分析和关键控制点(HACCP)方案的干预效果。方法选择2022年2月至2023年2月南京江北医院84例四肢皮瓣移植术后患者的临床资料进行回顾性研究,根据不同干预方案分为两组,各42例,对照组患者给予... 目的探讨在四肢皮瓣移植术后应用烤灯联合危害分析和关键控制点(HACCP)方案的干预效果。方法选择2022年2月至2023年2月南京江北医院84例四肢皮瓣移植术后患者的临床资料进行回顾性研究,根据不同干预方案分为两组,各42例,对照组患者给予常规护理,研究组患者则联合应用烤灯与HACCP方案,对比两组患者术后康复时间、不同时间皮瓣评分、皮瓣存活率与术后7 d断蒂恢复率、并发症发生率及护理满意度。结果研究组患者术后渗液与肿胀消失时间、抗生素应用时间、皮瓣创口愈合时间及住院时间均短于对照组(P<0.05);研究组患者术后6、72 h皮瓣评分优于对照组(P<0.05);研究组患者皮瓣存活率、术后7 d断蒂恢复率、护理满意度高于对照组(P<0.05);研究组患者术后并发症发生率低于对照组(4.76%vs 19.05%,χ^(2)=4.086,P<0.05)。结论烤灯联合HACCP方案可有效提高皮瓣存活率,减少术后并发症,缩短术后康复时间,患者满意度高,对四肢皮瓣移植术后康复具有促进作用。 展开更多
关键词 烤灯 危害分析和关键控制点方案 四肢皮瓣移植 皮瓣存活率 并发症 术后康复时间
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部