People travelling by air will receive more exposure dose and by water will receive less one.According to statistic data from the Ministry of Communications in 1988,the turnover in that year was abode 2×1010 man&#...People travelling by air will receive more exposure dose and by water will receive less one.According to statistic data from the Ministry of Communications in 1988,the turnover in that year was abode 2×1010 man·km.The total number of fishermen for inshore fishing was nearly two million reported by Ministry of Agriculture,Animal Husbandry and Fishery.Based on measured data on 212 points in six typical shipping lines of inshore lines and inland rivers,and the total voyage is 5625km,the average natural radiation dose rate received by travellers was calculated.Worn that assessment of collective effective dose for passengers by Water and fishermen was derived.The value is 32.7 man.Sv for passengers and 265.3 man.Sv for fishermen.展开更多
This paper describes the structure and work principle of a miniature and self-shielding electron-beam radiation processing system.Centering on the miniaturization and self-shielding,this system has been manufactured. ...This paper describes the structure and work principle of a miniature and self-shielding electron-beam radiation processing system.Centering on the miniaturization and self-shielding,this system has been manufactured. Test results show that the energy of the electron beam is 2.5MeV,the average power of the beam is 1.2kW,the width of scanning is 300ram,and the radiation emission from this equipment to the environment is under 2uSv/h.This system is reliable,safe,easy to operate and suitable for online radiation processing for manufacture or setting on a vehicle.展开更多
文摘People travelling by air will receive more exposure dose and by water will receive less one.According to statistic data from the Ministry of Communications in 1988,the turnover in that year was abode 2×1010 man·km.The total number of fishermen for inshore fishing was nearly two million reported by Ministry of Agriculture,Animal Husbandry and Fishery.Based on measured data on 212 points in six typical shipping lines of inshore lines and inland rivers,and the total voyage is 5625km,the average natural radiation dose rate received by travellers was calculated.Worn that assessment of collective effective dose for passengers by Water and fishermen was derived.The value is 32.7 man.Sv for passengers and 265.3 man.Sv for fishermen.
文摘This paper describes the structure and work principle of a miniature and self-shielding electron-beam radiation processing system.Centering on the miniaturization and self-shielding,this system has been manufactured. Test results show that the energy of the electron beam is 2.5MeV,the average power of the beam is 1.2kW,the width of scanning is 300ram,and the radiation emission from this equipment to the environment is under 2uSv/h.This system is reliable,safe,easy to operate and suitable for online radiation processing for manufacture or setting on a vehicle.
