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Introduction: The objective of this study was to investigate the effect of mivacurium in the application of fast-track anesthesia for transthoracic device closure of ventricular septal defects (VSDs) in children. Methods: The data of 108 children who underwent transthoracic device closure of VSDs from December 2018 to June 2020 were recorded and analyzed. All children were divided into group M (mivacurium group, n=55) and group C (cisatracurium group, n=53) according to the different muscle relaxant drug used. Results: No statistically significant differences in general preoperative data, intraoperative hemodynamic changes, or the incidence of adverse reactions were noted between the two groups (P>0.05). However, the intubation condition rating of children in group M was better than that in group C. The onset time, duration of clinical action and recovery index of the muscle relaxant, postoperative mechanical ventilation duration, and length of intensive care unit stay in group M were significantly lower than those in group C (P

OPLC is an important facility in the power fiber-to-the-home project, and it is an important means to achieve deep integration of power grid and communication network infrastructure. The OPLC temperature is closely related to the lifetime of the composite cable. The paper firstly analyzed important reasons for the temperature’s varying with cable surface of an OPLC core, and proposed that the oxidation of an insulating material such as XLPE is caused by the thermal aging, electrical aging, and photo aging of composite cable material with high temperature. With these results, the paper raised a technology for OPLC on-line condition monitoring and its safe state assessment, which uses the distributed temperature and current sensors to extract the on-line state parameters of the composite cable, and uses the internal and external temperature characteristics to evaluate the safe operation state of the OPLC. These temperature characteristics of the OPLC composite cable were further verified in the aging test of the composite cable. The method proposed in this paper can help the operation and maintenance staff to master the operation status of OPLC, scientifically develop equipment maintenance plans, and ensure network security.