Using CAE tools based on nonlinear finite element methods, full-frontalcollision dynamic simulation and analysis of a sedan car body with 3D tubular load bearing frame aretentatively carried out. Time histories of the...Using CAE tools based on nonlinear finite element methods, full-frontalcollision dynamic simulation and analysis of a sedan car body with 3D tubular load bearing frame aretentatively carried out. Time histories of the main collisional parameters are presented,improvements of the frame are partially made according to simulation results. Collisional simulationof the tubular frame alone indicates that, such new type of bodywork for sedan car is of goodpotentialities to meet the collision safety regulations.展开更多
N-of-1 trial designs have rarely been used in bodywork research.Using a recent trial as a methodological pilot,critical issues related to the applicability of N-of-1 trials to bodywork are discussed.These include the ...N-of-1 trial designs have rarely been used in bodywork research.Using a recent trial as a methodological pilot,critical issues related to the applicability of N-of-1 trials to bodywork are discussed.These include the issues of carry-over effects,bias-controlling approaches and statistical analysis.The discussion highlights the importance of mixed methods and draws some suggestions for a future research program.N-of-1 trials could be used to provide insights about some essential elements of bodywork modalities and their effectiveness.展开更多
Context: Working conditions in the car repair sector are difficult in general. This leads to health risk factors for inexperienced staff. In the bodywork painting workshop, the staff seemed less interested in the risk...Context: Working conditions in the car repair sector are difficult in general. This leads to health risk factors for inexperienced staff. In the bodywork painting workshop, the staff seemed less interested in the risks probably due to negligence or by lack of knowledge. This work aimed to describe the working conditions and their impact on the workers’ health in a workshop of bodywork painting in Conakry. Material and Methods: This was a cross-sectional study over 06 months (from July 01, 2021, to December 31, 2021). Were included the bodybuilders-painters, the painters and the bodybuilders. The data was collected during an interview. We analysed the personal data of the workers, the physical environment factors (lighting, noise, etc.) and, the clinical manifestations felt by the workers. Results: The average age was 37 years extenting from 18 to 54 years and, they were all men. Over 80% of workers were exposed to more than 1000 lux and, 78.2% of workers were exposed to the vibratory intensity level of the cordless drill > 2.5 m/s2. The most frequent symptoms were back pain, headache, itchy eyes, and numbness of fingers and hands. The analysis of working conditions and clinical manifestations showed a significant relationship between the level of illumination and the tingling eyes (p = 0.0007), the vibratory intensity of the drill and the numbness of fingers and hands (p = 0.01). This study revealed that some of the complaints cited are related to the working conditions. Conclusion: Working conditions in a bodywork paint workshop are occupational risk factors that become dangerous if they are unknown. A longitudinal study on the assessment of working conditions could better enlighten us on this phenomenon.展开更多
基金This project is supported by Provincial Science Foundation of Guangdong, China (No.990574).
文摘Using CAE tools based on nonlinear finite element methods, full-frontalcollision dynamic simulation and analysis of a sedan car body with 3D tubular load bearing frame aretentatively carried out. Time histories of the main collisional parameters are presented,improvements of the frame are partially made according to simulation results. Collisional simulationof the tubular frame alone indicates that, such new type of bodywork for sedan car is of goodpotentialities to meet the collision safety regulations.
文摘N-of-1 trial designs have rarely been used in bodywork research.Using a recent trial as a methodological pilot,critical issues related to the applicability of N-of-1 trials to bodywork are discussed.These include the issues of carry-over effects,bias-controlling approaches and statistical analysis.The discussion highlights the importance of mixed methods and draws some suggestions for a future research program.N-of-1 trials could be used to provide insights about some essential elements of bodywork modalities and their effectiveness.
文摘Context: Working conditions in the car repair sector are difficult in general. This leads to health risk factors for inexperienced staff. In the bodywork painting workshop, the staff seemed less interested in the risks probably due to negligence or by lack of knowledge. This work aimed to describe the working conditions and their impact on the workers’ health in a workshop of bodywork painting in Conakry. Material and Methods: This was a cross-sectional study over 06 months (from July 01, 2021, to December 31, 2021). Were included the bodybuilders-painters, the painters and the bodybuilders. The data was collected during an interview. We analysed the personal data of the workers, the physical environment factors (lighting, noise, etc.) and, the clinical manifestations felt by the workers. Results: The average age was 37 years extenting from 18 to 54 years and, they were all men. Over 80% of workers were exposed to more than 1000 lux and, 78.2% of workers were exposed to the vibratory intensity level of the cordless drill > 2.5 m/s2. The most frequent symptoms were back pain, headache, itchy eyes, and numbness of fingers and hands. The analysis of working conditions and clinical manifestations showed a significant relationship between the level of illumination and the tingling eyes (p = 0.0007), the vibratory intensity of the drill and the numbness of fingers and hands (p = 0.01). This study revealed that some of the complaints cited are related to the working conditions. Conclusion: Working conditions in a bodywork paint workshop are occupational risk factors that become dangerous if they are unknown. A longitudinal study on the assessment of working conditions could better enlighten us on this phenomenon.
