2018年 · 第38卷第10期

Breast cancer is one of the most common malignant tumors in women, and it is also the leading cause of death in women with cancer^[1]。 Radiotherapy is an important treatment after modified radical mastectomy, and the common adverse reaction of postoperative radiotherapy is acute radiation dermatitis. The occurrence of severe dermatitis not only affects the quality of life of patients, but even affects the smooth progress of radiotherapy. At present, triethanolamine cream is the only drug with clear indication for the treatment of secondary erythema caused by radiotherapy. Because of its high price, its clinical application is limited. In this study, low-cost heparin sodium cream was used to test radiation skin injury, which has certain preventive and therapeutic effects. The summary report is as follows.

Since the first commercial nuclear power plant was put into operation in the mid-1950s, nuclear power has been developed for more than 60 years. According to data published by the International Atomic Energy Agency in September 2018, there are 455 nuclear power units in operation worldwide, with an installed capacity of 399,808 MW of electric power; 55 units under construction with an installed capacity of 55 733 MW of electric power^[1]。 Since the first nuclear power plant in Qinshan Phase I was connected to the grid for the first time in 1991, by March 9, 2018, there have been 17 nuclear power plants, 38 nuclear power units in commercial operation and 18 units under construction in China, of which PWR accounts for 94.64%, heavy water reactor accounts for 3.57% and graphite reactor accounts for 1.79%^[2]。 By 2020, the installed capacity of nuclear power in operation will reach 58 million kilowatts and the installed capacity under construction will reach more than 30 million kilowatts^[3]。 Nuclear cleaning is a necessary task in order to protect the equipment, plant, and limit the spread of radioactive pollution before commissioning, during daily operation and overhaul of nuclear power plants, so as to provide a clean and safe working environment for on-site workers^[4,5,6]。 The specific work of nuclear cleaning is complicated, and the flow of personnel is frequent, so it is difficult to have long-term and sustained data for personal dose monitoring data. In order to evaluate the dose of nuclear cleaning workers, the personal dose monitoring data of 903 workers during the 10-year period from 2006 to 2015 were statistically analyzed.