AIM:To compare the differences and consistency of IOL-Master 700 biometers applying swept optical coherence tomography with the conventional IOL-Master 500 applying partial coherence interference in terms of the ocula...AIM:To compare the differences and consistency of IOL-Master 700 biometers applying swept optical coherence tomography with the conventional IOL-Master 500 applying partial coherence interference in terms of the ocular biological parameters in adolescents with ametropia.METHODS:A total of 110 adolescents(110 eyes)with ametropia were collected,including 55 males and 55 females;age 10.69±2.81 y.Ocular biological measurements were taken by IOL-Master 700 and IOL-Master 500 respectively to obtain biological parameters including axial length(AL),mean corneal anterior surface keratometry(K_(m)),anterior chamber depth(ACD),and horizontal corneal diameter(WTW).Paired t-test was used to compare the differences between the two instruments.The intra-group correlation coefficient(ICC)and the Bland-Altman analysis were used to evaluate the consistency of parameter measurements between the two instruments for the four biological parameters.RESULTS:Statistical analysis showed that there was no significant difference in the K_(m)value measured by IOL-Master 700 and IOL-Master 500(t=-1.644,P=0.116).The average differences of the AL,ACD,and WTW distances between the two instruments are 0.028,0.101 and 0.064 mm respectively,and the differences are statistically significant(t=2.644,12.505,3.911,P<0.001).The consistency study results indicated high correlation in the measurement of AL,K_(m),ACD and WTW between the two instruments(ICC=0.994,0.873,0.927,0.912).CONCLUSION:The novel biometric instrument IOL-Master 700 makes no difference with IOL-Master 500 in the measurement of K_(m).There are some differences in the values of AL,ACD,and WTW.However,the two instruments show good consistency in these four biological measurements.The measured values of K_(m)are interchangeable between the instruments.These two types of biometrics can be used as mutual reference in consideration of that the differences in AL,ACD,and WTW measurements are not sufficient to produce clinically meaningful differences.展开更多
随着油气田数字化、智能化建设的不断深入,如何高效管理数量庞大、分布广泛的油气井,特别是间歇性生产井(间开井),成为提升生产效率和降低运维成本的关键。塔中采油气管理区第三联合站(以下简称“塔三联”)负责管理的站外单井数量众多,...随着油气田数字化、智能化建设的不断深入,如何高效管理数量庞大、分布广泛的油气井,特别是间歇性生产井(间开井),成为提升生产效率和降低运维成本的关键。塔中采油气管理区第三联合站(以下简称“塔三联”)负责管理的站外单井数量众多,监控数据庞大,传统的人工监测与分析模式面临工作量大、重复性高、响应滞后等挑战。站外单井数据主要由西门子PCS7系统采集,而主控系统为中控ECS-700。为解决此问题,提出并实践了一种基于OPC DA(OLE for Process Control Data Access)技术的跨平台数据集成方案,成功将PCS7系统采集的关键单井油压数据实时传输至中控ECS-700数据库服务器。在此基础上,利用中控ECS-700系统的组态软件和控制站的编程能力,设计并实现了一套智能开井提醒应用程序。该程序能够自动监测特定间开井的油压动态变化,依据预设逻辑判断是否达到开井条件,并在满足条件时自动向工程师发出提醒。实践表明,该应用显著减轻了工程师的日常监测负担,提高了决策的及时性和准确性,为油田精细化管理和智能化运营提供了有力支撑。展开更多
文摘AIM:To compare the differences and consistency of IOL-Master 700 biometers applying swept optical coherence tomography with the conventional IOL-Master 500 applying partial coherence interference in terms of the ocular biological parameters in adolescents with ametropia.METHODS:A total of 110 adolescents(110 eyes)with ametropia were collected,including 55 males and 55 females;age 10.69±2.81 y.Ocular biological measurements were taken by IOL-Master 700 and IOL-Master 500 respectively to obtain biological parameters including axial length(AL),mean corneal anterior surface keratometry(K_(m)),anterior chamber depth(ACD),and horizontal corneal diameter(WTW).Paired t-test was used to compare the differences between the two instruments.The intra-group correlation coefficient(ICC)and the Bland-Altman analysis were used to evaluate the consistency of parameter measurements between the two instruments for the four biological parameters.RESULTS:Statistical analysis showed that there was no significant difference in the K_(m)value measured by IOL-Master 700 and IOL-Master 500(t=-1.644,P=0.116).The average differences of the AL,ACD,and WTW distances between the two instruments are 0.028,0.101 and 0.064 mm respectively,and the differences are statistically significant(t=2.644,12.505,3.911,P<0.001).The consistency study results indicated high correlation in the measurement of AL,K_(m),ACD and WTW between the two instruments(ICC=0.994,0.873,0.927,0.912).CONCLUSION:The novel biometric instrument IOL-Master 700 makes no difference with IOL-Master 500 in the measurement of K_(m).There are some differences in the values of AL,ACD,and WTW.However,the two instruments show good consistency in these four biological measurements.The measured values of K_(m)are interchangeable between the instruments.These two types of biometrics can be used as mutual reference in consideration of that the differences in AL,ACD,and WTW measurements are not sufficient to produce clinically meaningful differences.
文摘随着油气田数字化、智能化建设的不断深入,如何高效管理数量庞大、分布广泛的油气井,特别是间歇性生产井(间开井),成为提升生产效率和降低运维成本的关键。塔中采油气管理区第三联合站(以下简称“塔三联”)负责管理的站外单井数量众多,监控数据庞大,传统的人工监测与分析模式面临工作量大、重复性高、响应滞后等挑战。站外单井数据主要由西门子PCS7系统采集,而主控系统为中控ECS-700。为解决此问题,提出并实践了一种基于OPC DA(OLE for Process Control Data Access)技术的跨平台数据集成方案,成功将PCS7系统采集的关键单井油压数据实时传输至中控ECS-700数据库服务器。在此基础上,利用中控ECS-700系统的组态软件和控制站的编程能力,设计并实现了一套智能开井提醒应用程序。该程序能够自动监测特定间开井的油压动态变化,依据预设逻辑判断是否达到开井条件,并在满足条件时自动向工程师发出提醒。实践表明,该应用显著减轻了工程师的日常监测负担,提高了决策的及时性和准确性,为油田精细化管理和智能化运营提供了有力支撑。
