Objective:To construct a risk assessment index system for occupational disease hazards in the automotive repair industry using the Delphi method, providing a scientific basis and systematic evaluation framework for occupational hazard management in this sector.Methods:In January 2024, an expert survey method was employed to identify occupational hazard risk indicators through in-depth expert discussions. A multidimensional and hierarchical assessment system was designed based on the two core elements of "comprehensive prevention-on-site hazards."Results:The consultation results from 20 authoritative experts demonstrated that the expert authority coefficient (0.84), coordination coefficient (0.73), and reliability coefficient (0.83) all reached robust levels. The importance scores of the indicators (ranging from 3.47 to 5.59 points) exhibited clear discriminative validity. Ultimately, an assessment system comprising 2 first-level indicators, 5 second-level indicators, and 14 third-level indicators was established.Conclusion:The index system developed in this study demonstrates high scientific rigor and practical applicability. It provides a systematic evaluation tool for the hierarchical management and targeted prevention of occupational disease hazards in the automotive repair industry, offering both theoretical support and practical guidance for occupational hazard risk control in this field.

Objective:To construct a risk assessment index system for occupational disease hazards in the automotive repair industry using the Delphi method, providing a scientific basis and systematic evaluation framework for occupational hazard management in this sector.Methods:In January 2024, an expert survey method was employed to identify occupational hazard risk indicators through in-depth expert discussions. A multidimensional and hierarchical assessment system was designed based on the two core elements of "comprehensive prevention-on-site hazards."Results:The consultation results from 20 authoritative experts demonstrated that the expert authority coefficient (0.84), coordination coefficient (0.73), and reliability coefficient (0.83) all reached robust levels. The importance scores of the indicators (ranging from 3.47 to 5.59 points) exhibited clear discriminative validity. Ultimately, an assessment system comprising 2 first-level indicators, 5 second-level indicators, and 14 third-level indicators was established.Conclusion:The index system developed in this study demonstrates high scientific rigor and practical applicability. It provides a systematic evaluation tool for the hierarchical management and targeted prevention of occupational disease hazards in the automotive repair industry, offering both theoretical support and practical guidance for occupational hazard risk control in this field.

Objective To study the changes in biomechanical properties of human cornea after laser in situ keratomileusis (LASIK) and predict corneal stiffness after the LASIK surgery. Methods According to the measurement results from corneal visualization scheimpflug technology (Corvis ST), the corneal tangent stiffness coefficient (STSC) and energy absorbed area (Aabsorbed) were calculated. The change patterns of corneal stiffness and viscosity after refractive surgery were analyzed. Results The difference of corneal STSC and Aabsorbed before and after LASIK had a statistical significance (P<0.05). The obtained formula for predicting corneal stiffness after refractive surgery was: Sbefore surgery =1.055bIOPbefore surgery + 0.015CCTbefore surgery，Safter surgery =0.937Sbefore surgery +0.019CCTafter surgery. Conclusions LASIK surgery not only changes corneal thickness, but also reduces corneal stiffness and viscosity. Prediction of corneal stiffness after surgery can provide guidance for the design of clinical surgery and improve the safety of surgery.

Study of the mechanical properties of in vivo corneal materials is an important basis for further study of corneal physiological and pathological phenomena by means of finite element method. In this paper, the elastic coefficient ( ) and viscous coefficient ( ) of normal cornea and keratoconus under pulse pressure are calculated by using standard linear solid model with the data provided by corneal visualization scheimpflug technology. The results showed that there was a significant difference of and between normal cornea and keratoconus cornea ( < 0.05). Receiver operating characteristic curve analysis showed that the area under curve (AUC) for , and their combined indicators were 0.776, 0.895 and 0.948, respectively, which indicated that keratoconus could be predicted by and . The results of this study may provide a reference for the early diagnosis of keratoconus and avoid the occurrence of keratoconus after operation, so it has a certain clinical value.
Area Under Curve ; Cornea ; physiology ; Elasticity ; Humans ; Keratoconus ; pathology ; ROC Curve ; Viscosity

Objective To investigate the feasibility of combined laparoscopic and thoracoscopic esophagectomy for esophageal carcinoma and gastro-esophageal anastomosis in right thoracic cavity.Methods We retrospectively analyzed the clinical data of 38 patients who underwent esophagectomy for esophageal carcinoma and gastro-esophageal anastomosis in right thoracic cavity from October 2011 to August 2012.To remove the stomach in laparoscopic and the esophagus in thoracoscopy.The main portion of a gastric conduit is created using three to four firings of a linear stapler(Ethicon Endo-surgery,Cincinati,OH) and jejunum stoma.Gastric conduit was pulled into the chest cavity and anastomosed to the esophagus.Results The average operative time was 280 minutes,the mean operative blood loss was 120 ml.No patient required laparotomy.No pulmonary complications or anastomotic leaks occurred.One had gastric retention,another one had chylous hydrothorax.All patients were cured,no one dead in hospital.Conclusion Combined laparoscopic and thoracoscopic esophagectomy for esophageal carcinoma and gastro-esophageal anastomosis in right thoracic cavity is technically feasible and safe,minimized trauma,less operative blood loss and quick recovery.