双酚F(bisphenol F, BPF)和双酚AF(bisphenol AF, BPAF)作为双酚A(bisphenol A, BPA)的替代品已被投入生产和使用,然而目前有关BPA替代品毒性的数据还很缺乏。本文从急性毒性和应激响应2个方面比较了BPF、BPAF与BPA对非洲爪蛙蝌蚪的毒...双酚F(bisphenol F, BPF)和双酚AF(bisphenol AF, BPAF)作为双酚A(bisphenol A, BPA)的替代品已被投入生产和使用,然而目前有关BPA替代品毒性的数据还很缺乏。本文从急性毒性和应激响应2个方面比较了BPF、BPAF与BPA对非洲爪蛙蝌蚪的毒性。结果表明,48 h的半致死浓度(LC50)顺序为BPF(11.01 mg·L^-1)>BPA(7.54 mg·L^-1)>BPAF(2.87 mg·L^-1);对氧化应激水平的影响BPAF强于BPA,BPF与BPA相近;BPA和BPAF对热休克蛋白基因表达水平有影响,BPF没有影响。本研究提示,BPAF作为BPA的替代品,其毒性强于BPA,而BPF与BPA类似。展开更多
The Ion Source Group at IMP has undertaken series of high intensity proton beam R&D programs including operation of intense proton source and LEBT for C-ADS injector, development of intense ion source for Jinping ...The Ion Source Group at IMP has undertaken series of high intensity proton beam R&D programs including operation of intense proton source and LEBT for C-ADS injector, development of intense ion source for Jinping Underground Nuclear Astrophysics experiments (JUNA), and new intense proton ion source at higher microwave frequency.展开更多
In 2015, the service time of the two on-line ion sources of HIRFL-CSR accelerator facility, SECRAL and LECR3, is 3 335.5 and 3 168.5 h, respectively, amouting to 6 504 h. Except 26Mg7+, which was required by the accel...In 2015, the service time of the two on-line ion sources of HIRFL-CSR accelerator facility, SECRAL and LECR3, is 3 335.5 and 3 168.5 h, respectively, amouting to 6 504 h. Except 26Mg7+, which was required by the accelerator but failed to be produced due the oxidation of the material, 20 kinds of ion beams have been delivered successfull.The failure time is 49 h this year, mainly attributed to the breakdown of the cryostat system.展开更多
文摘The Ion Source Group at IMP has undertaken series of high intensity proton beam R&D programs including operation of intense proton source and LEBT for C-ADS injector, development of intense ion source for Jinping Underground Nuclear Astrophysics experiments (JUNA), and new intense proton ion source at higher microwave frequency.
文摘In 2015, the service time of the two on-line ion sources of HIRFL-CSR accelerator facility, SECRAL and LECR3, is 3 335.5 and 3 168.5 h, respectively, amouting to 6 504 h. Except 26Mg7+, which was required by the accelerator but failed to be produced due the oxidation of the material, 20 kinds of ion beams have been delivered successfull.The failure time is 49 h this year, mainly attributed to the breakdown of the cryostat system.
