Noise from the machine on coal working face seriously influenced the miners' physical and mental health, and also, due to the noise, there may be a major hidden danger in safety from accidents as all safety warnin...Noise from the machine on coal working face seriously influenced the miners' physical and mental health, and also, due to the noise, there may be a major hidden danger in safety from accidents as all safety warning signals may be masked by the noise. This paper summarized the features of mine environmental noise on working face, such as the variety of noise sources, the continuity of high intensity and slow attenuation in narrow space, etc.The main projects about noise forecasting and controlling on working face was emphatically expounded;the development status about mines machinery noise mechanism and environmental noise acoustic characteristics of space-time of these main research topics were also introduced.展开更多
Schools and parents should pay attention to health education for students＇ health awareness and good health habits, to establish a correct concept of health. School mental health education should be the first place; ...Schools and parents should pay attention to health education for students＇ health awareness and good health habits, to establish a correct concept of health. School mental health education should be the first place; school should create a positive learning environment for students to get knowledge and skills of exercising. Especially in the nine years of compulsory education stage, we should ensure necessary physical exercise, reasonable arrangements for extracurricular activities to improve students＇ physical fitness. We should improve the school＇ s sports facilities, and create a good campus atmosphere. Schools should actively carry out extra-curricular sports activities, improve the level of quality of physical education teachers, develop students＇ sports consciousness, and improve material conditions for the students to create a good learning environment, meanwhile, we should increase the content of education, and enrich the content of physical education to enable students to select and reach more sports.展开更多
基金Supported by the National Natural Science Foundation of China(50975087)the Scientific Research Starting Foundation for Returned Overseas Chinese Scholars,Ministry of Education,China(37)Key Research Project of Hunan Province Office of Education(09A026)
文摘Noise from the machine on coal working face seriously influenced the miners' physical and mental health, and also, due to the noise, there may be a major hidden danger in safety from accidents as all safety warning signals may be masked by the noise. This paper summarized the features of mine environmental noise on working face, such as the variety of noise sources, the continuity of high intensity and slow attenuation in narrow space, etc.The main projects about noise forecasting and controlling on working face was emphatically expounded;the development status about mines machinery noise mechanism and environmental noise acoustic characteristics of space-time of these main research topics were also introduced.
文摘Schools and parents should pay attention to health education for students＇ health awareness and good health habits, to establish a correct concept of health. School mental health education should be the first place; school should create a positive learning environment for students to get knowledge and skills of exercising. Especially in the nine years of compulsory education stage, we should ensure necessary physical exercise, reasonable arrangements for extracurricular activities to improve students＇ physical fitness. We should improve the school＇ s sports facilities, and create a good campus atmosphere. Schools should actively carry out extra-curricular sports activities, improve the level of quality of physical education teachers, develop students＇ sports consciousness, and improve material conditions for the students to create a good learning environment, meanwhile, we should increase the content of education, and enrich the content of physical education to enable students to select and reach more sports.
