ABSTRACT
Objective@#To understand the occupational hazard and distribution of silica dust (free SiO2≥10%) in the workplace environment of the enterprises in Fengxian District, and to provide scientific basis for improving the working environment and protecting the physical and mental health of the workers.@*Methods@#Individual sampling monitoring and on-site labor hygiene investigation were conducted on 421 workers involved in 87 silicon dust enterprises in the jurisdiction from 2014 to 2018, and measured concentration-time weighted average (CTWA) .@*Results@#The results showed that the range of the CTWA was (0.021~17.000) mg/m3, the median was 1.600 mg/m3, and the qualified rate of 30.88%. The difference of total dust concentration was statistically significant in different years (Z=38.831, P<0.05) . The qualified rate of small-scale enterprises is higher than that of medium-scale enterprises (χ2=9.472, P<0.05) . The qualified rate of other domestic enterprises is higher than that of private enterprises and foreign enterprises (χ2=10.089, P<0.05) . The acceptance rate of metal products manufacturing is lower than that of general equipment manufacturing and other manufacturing enterprises (χ2=64.626, P<0.05) . The qualification rate of natural ventilation is higher than that of mechanical ventilation (χ2=6.278, P<0.05) .@*Conclusion@#The enterprises involved in silicon production in Fengxian District need to further strengthen the production process reform and improve the ventilation and dust removal protection measures. Widely carry out the publicity of occupational disease prevention and control law, conduct targeted pre-job training, improve workers' awareness of self-protection, and protect the occupational health of workers in many ways.
ABSTRACT
One hundred and forty-four medical students were enrolled in the study, the participants were randomly divided into experimental group and control group with 72 in each. All students attended the theoretical lecture of general medicine. Students in experimental group took part in the extracurricular teaching activities including the nutritional course and practice, the clinical case study and problem based learning ( PBL), students in control group did not have the extracurricular activities. The results showed that although there was no difference in general testing scores between two groups, the problem solving ability and assay-writing ability of experimental group were significantly higher than those of control group.
ABSTRACT
Data were analyzed from self-filled questionnaires for the students who took the elective course of general practice in China Medical University. 95.5% of students thought it was necessary to study general practice in the college. 0-10 was used to score the degree of how they want to choose general practice as a career, the median was 0 before they had the class and the median was 5 after the class (Wilcoxon rank test, P<0.01). But there were still some places need to be improved in terms of curriculum design, teaching methods and community practice. The General Practice teaching need to be innovated and the teaching mode should be different from the traditional one.