Digital radiographic(DR)testing equipment has been widely promoted and applied in the inspection of circumferential welds in oil and gas pipelines.In order to establish a comprehensive quality control system for digit...Digital radiographic(DR)testing equipment has been widely promoted and applied in the inspection of circumferential welds in oil and gas pipelines.In order to establish a comprehensive quality control system for digital radiographic testing and fully evaluate the integrated system inspection ability of equipment,personnel,and processes,a scientific and standardized evaluation method to the system is very necessary.Here investigates the precedents of relevant non-destructive testing evaluation methods at home and abroad,considers the testing characteristics of DR equipment,develops a complete set of DR testing system evaluation procedures.It deeply studies the adaptability methods of program processes from defect production to slicing processing and data statistical calculation for digital radiographic testing evaluation.To check the repeatability and reliability of the detectable system,five process welds with 200 real metallographic defects were fabricated in the laboratory.From the detected results,the DR system has good repeatability in image quality,and the detectable defect size reaches 0.85 mm under achieving 90%detection probability at a confidence level of 95%,the error of detected defect length is±2 mm,and the error of detected defect localization is±5 mm.The qualitative and quantitative detection of defects are accurate and reliable.The test further confirmed the reliable detection ability of the DR detection system,and fully validated the scientific and practical evaluation method designed.The research on the evaluation test method can serve as an important link in the quality control system for the on-site application of digital ray equipment in long-distance pipelines.The designed program,test,and evaluation content can serve as an important basis for the formulation of relevant specifications or standards.展开更多
目的分析围手术期肺康复训练在胸腔镜肺叶切除术中临床疗效。方法选取2022年10月至2023年10月我院收治的肺癌胸腔镜肺叶切除术患者71例为对象,围手术期行常规干预32例为对照组,在此基础上行肺康复训练39例为观察组。对比两组术后1个月...目的分析围手术期肺康复训练在胸腔镜肺叶切除术中临床疗效。方法选取2022年10月至2023年10月我院收治的肺癌胸腔镜肺叶切除术患者71例为对象,围手术期行常规干预32例为对照组,在此基础上行肺康复训练39例为观察组。对比两组术后1个月肺功能、6分钟步行距离(6 minutes walk distance,6MWD)、咳嗽效力分级及术后并发症、拔管时间及出院时间情况。结果观察组术后1月用力肺活量(forced vital capacity,FVC)[(3.02±0.48)vs.(2.57±0.35)]L、第一秒用力肺活量(forced expiratory volume in the first second,FEV 1)[(2.38±0.39)vs.(2.07±0.32)]L、FEV 1/FVC[(78.47±4.78)vs.(73.20±5.22)]、最大呼气流量(peak expiratory flow,PEF)[(6.29±1.25)vs.(5.18±1.02)]L/s、6MWD[(477.18±94.20)vs.(362.39±74.23)]m及半定量咳嗽效力[(3.74±0.62)vs.(2.68±0.63)]级优于对照组(P<0.05);观察组肺部感染5例(12.82%)、肺不张4例(10.26%)及再次胸腔穿刺2例(6.25%)低于对照组肺部感染13例(40.63%)、肺不张11例(34.28%)、再次胸腔穿刺9例(23.08%)(P<0.05);观察组胸管拔除时间及出院时间短于对照组(P<0.05)。结论肺康复训练有助于提高肺癌胸腔镜下肺叶切除术后肺功能和心肺耐力,降低围手术期并发症,减少拔管时间和住院时间。展开更多
文摘Digital radiographic(DR)testing equipment has been widely promoted and applied in the inspection of circumferential welds in oil and gas pipelines.In order to establish a comprehensive quality control system for digital radiographic testing and fully evaluate the integrated system inspection ability of equipment,personnel,and processes,a scientific and standardized evaluation method to the system is very necessary.Here investigates the precedents of relevant non-destructive testing evaluation methods at home and abroad,considers the testing characteristics of DR equipment,develops a complete set of DR testing system evaluation procedures.It deeply studies the adaptability methods of program processes from defect production to slicing processing and data statistical calculation for digital radiographic testing evaluation.To check the repeatability and reliability of the detectable system,five process welds with 200 real metallographic defects were fabricated in the laboratory.From the detected results,the DR system has good repeatability in image quality,and the detectable defect size reaches 0.85 mm under achieving 90%detection probability at a confidence level of 95%,the error of detected defect length is±2 mm,and the error of detected defect localization is±5 mm.The qualitative and quantitative detection of defects are accurate and reliable.The test further confirmed the reliable detection ability of the DR detection system,and fully validated the scientific and practical evaluation method designed.The research on the evaluation test method can serve as an important link in the quality control system for the on-site application of digital ray equipment in long-distance pipelines.The designed program,test,and evaluation content can serve as an important basis for the formulation of relevant specifications or standards.
文摘目的分析围手术期肺康复训练在胸腔镜肺叶切除术中临床疗效。方法选取2022年10月至2023年10月我院收治的肺癌胸腔镜肺叶切除术患者71例为对象,围手术期行常规干预32例为对照组,在此基础上行肺康复训练39例为观察组。对比两组术后1个月肺功能、6分钟步行距离(6 minutes walk distance,6MWD)、咳嗽效力分级及术后并发症、拔管时间及出院时间情况。结果观察组术后1月用力肺活量(forced vital capacity,FVC)[(3.02±0.48)vs.(2.57±0.35)]L、第一秒用力肺活量(forced expiratory volume in the first second,FEV 1)[(2.38±0.39)vs.(2.07±0.32)]L、FEV 1/FVC[(78.47±4.78)vs.(73.20±5.22)]、最大呼气流量(peak expiratory flow,PEF)[(6.29±1.25)vs.(5.18±1.02)]L/s、6MWD[(477.18±94.20)vs.(362.39±74.23)]m及半定量咳嗽效力[(3.74±0.62)vs.(2.68±0.63)]级优于对照组(P<0.05);观察组肺部感染5例(12.82%)、肺不张4例(10.26%)及再次胸腔穿刺2例(6.25%)低于对照组肺部感染13例(40.63%)、肺不张11例(34.28%)、再次胸腔穿刺9例(23.08%)(P<0.05);观察组胸管拔除时间及出院时间短于对照组(P<0.05)。结论肺康复训练有助于提高肺癌胸腔镜下肺叶切除术后肺功能和心肺耐力,降低围手术期并发症,减少拔管时间和住院时间。
