The objective of this work was to use the Geant4 toolkit to perform simulation studies on the personal dose response of fluorescent nuclear track detectors(FNTDs).The entire structure of the FNTD response can be desig...The objective of this work was to use the Geant4 toolkit to perform simulation studies on the personal dose response of fluorescent nuclear track detectors(FNTDs).The entire structure of the FNTD response can be designed,and the detector's energy and dose responses can be optimized in a broad energy range(0.01 eV-20 MeV). In general, the detectors used ~6LiF and CH_2 converters that have high energy and high dose response at neutron energies lower than 10 eV and greater than 1 MeV, respectively. The method of least squares was used to optimize the dose response of H*(10) and the energy response corresponding to Rtotal. The values of the optimized response of H*(10) lie between 0.8 and 1.4, corresponding to the energy ranges 0.01 eV-70 keV and 4-14 MeV, respectively. This occupies nearly eight out of the nine orders of the total energy range. Even though the optimized response of Rtotal is constrained between 0.89 and 1.1 in the energy range of 0.01 eV-20 MeV, it is suitable for obtaining the broad neutron spectrum of fluence with good accuracy.展开更多
为建立食源性沙门氏菌Sau-PCR基因快速分型方法。用限制性内切酶Sau3AI酶切14株沙门氏菌基因组DNA,以酶切产物为模板,用根据酶切位点设计的引物进行PCR扩增,样品用核酸染料SYBR Green Ⅰ染色,经琼脂糖凝胶电泳后用Quantity One软件对14...为建立食源性沙门氏菌Sau-PCR基因快速分型方法。用限制性内切酶Sau3AI酶切14株沙门氏菌基因组DNA,以酶切产物为模板,用根据酶切位点设计的引物进行PCR扩增,样品用核酸染料SYBR Green Ⅰ染色,经琼脂糖凝胶电泳后用Quantity One软件对14株菌进行同源性分析。结果显示,经Sau3AI酶切6h后,4种引物均扩增出条带,其中使用引物STG扩增的条带最为清晰,14株沙门氏菌均得到6-11条大小在0.2-1.5kb片段,利于分型。展开更多
基金funded by the International Fusion Reactor Experiment Program(No.2014GB112004)
文摘The objective of this work was to use the Geant4 toolkit to perform simulation studies on the personal dose response of fluorescent nuclear track detectors(FNTDs).The entire structure of the FNTD response can be designed,and the detector's energy and dose responses can be optimized in a broad energy range(0.01 eV-20 MeV). In general, the detectors used ~6LiF and CH_2 converters that have high energy and high dose response at neutron energies lower than 10 eV and greater than 1 MeV, respectively. The method of least squares was used to optimize the dose response of H*(10) and the energy response corresponding to Rtotal. The values of the optimized response of H*(10) lie between 0.8 and 1.4, corresponding to the energy ranges 0.01 eV-70 keV and 4-14 MeV, respectively. This occupies nearly eight out of the nine orders of the total energy range. Even though the optimized response of Rtotal is constrained between 0.89 and 1.1 in the energy range of 0.01 eV-20 MeV, it is suitable for obtaining the broad neutron spectrum of fluence with good accuracy.
文摘为建立食源性沙门氏菌Sau-PCR基因快速分型方法。用限制性内切酶Sau3AI酶切14株沙门氏菌基因组DNA,以酶切产物为模板,用根据酶切位点设计的引物进行PCR扩增,样品用核酸染料SYBR Green Ⅰ染色,经琼脂糖凝胶电泳后用Quantity One软件对14株菌进行同源性分析。结果显示,经Sau3AI酶切6h后,4种引物均扩增出条带,其中使用引物STG扩增的条带最为清晰,14株沙门氏菌均得到6-11条大小在0.2-1.5kb片段,利于分型。
