In the SILER （Seismic-Initiated events risk mitigation in LEad-cooled Reactors） Project, it is interesting to apply seismic isolation technology for the reactor assembly of the fixed base reactor building for ADS （...In the SILER （Seismic-Initiated events risk mitigation in LEad-cooled Reactors） Project, it is interesting to apply seismic isolation technology for the reactor assembly of the fixed base reactor building for ADS （Acceleration Driven System） heavy liquid reactor MYRRHA （Multipurpose Hybrid Research Reactor for High-Tech Application） which contains the most critical safety related components, such as reactor vessel, safe shutdown and control rod mechanisms, primary heat exchangers, primary pumps, spoliation target assembly and fuel assemblies, etc. The purpose of this paper is to investigate the possibility of an application of a partial seismic isolation to the safety critical components only, here, the reactor assembly. This paper presents the preliminary analysis results of the isolated reactor assembly and compares these with those of seismic isolated ADS reactor building. The analysis results show the reduction of the seismic acceleration response but the increase of the relative displacement for the reactor assembly. Some safety issues, especially, coolant＇s incapable covering the reactor core make difficult to apply for the partial seismic isolation of the ADS reactor assembly due to large relative displacement occurring the partial isolation system. Further study on the partial seismic isolation application of the critical safety components are also discussed.展开更多
目的利用近红外光谱技术结合化学计量学方法对苦杏仁生品和不同火候炒苦杏仁进行定性和定量分析,以期建立不同火候炒苦杏仁的快速鉴定方法。方法利用HPLC方法测定样品苦杏仁苷含量,采集50批苦杏仁生品及其不同火候炒制品的近红外光谱信...目的利用近红外光谱技术结合化学计量学方法对苦杏仁生品和不同火候炒苦杏仁进行定性和定量分析,以期建立不同火候炒苦杏仁的快速鉴定方法。方法利用HPLC方法测定样品苦杏仁苷含量,采集50批苦杏仁生品及其不同火候炒制品的近红外光谱信息,经最优预处理算法预处理后利用偏最小二乘法判别分析(partial least square-discriminant analysis,PLS-DA)建立苦杏仁生品及其不同火候炒制品的定性及定量分析模型。结果标准正态变量变换(standard normal variate transformation,SNV)处理方法结合PLS-DA在模型建立中显示出良好的区分能力。在一维的九点平滑1D9S预处理方法的基础上,使用竞争性自适应重加权采样(competitive adaptive reweighted sampling,CARS)提取特征建立的偏最小二乘回归(partial least squares regressi,PLSR)模型效果最佳。结论基于近红外光谱技术结合化学计量学方法所建立的苦杏仁生品和不同炒制程度的炒苦杏仁定性判别模型和含量预测模型具有较高的准确性,可用于苦杏仁和不同火候炒苦杏仁的快速鉴别。展开更多
文摘In the SILER （Seismic-Initiated events risk mitigation in LEad-cooled Reactors） Project, it is interesting to apply seismic isolation technology for the reactor assembly of the fixed base reactor building for ADS （Acceleration Driven System） heavy liquid reactor MYRRHA （Multipurpose Hybrid Research Reactor for High-Tech Application） which contains the most critical safety related components, such as reactor vessel, safe shutdown and control rod mechanisms, primary heat exchangers, primary pumps, spoliation target assembly and fuel assemblies, etc. The purpose of this paper is to investigate the possibility of an application of a partial seismic isolation to the safety critical components only, here, the reactor assembly. This paper presents the preliminary analysis results of the isolated reactor assembly and compares these with those of seismic isolated ADS reactor building. The analysis results show the reduction of the seismic acceleration response but the increase of the relative displacement for the reactor assembly. Some safety issues, especially, coolant＇s incapable covering the reactor core make difficult to apply for the partial seismic isolation of the ADS reactor assembly due to large relative displacement occurring the partial isolation system. Further study on the partial seismic isolation application of the critical safety components are also discussed.
文摘目的利用近红外光谱技术结合化学计量学方法对苦杏仁生品和不同火候炒苦杏仁进行定性和定量分析,以期建立不同火候炒苦杏仁的快速鉴定方法。方法利用HPLC方法测定样品苦杏仁苷含量,采集50批苦杏仁生品及其不同火候炒制品的近红外光谱信息,经最优预处理算法预处理后利用偏最小二乘法判别分析(partial least square-discriminant analysis,PLS-DA)建立苦杏仁生品及其不同火候炒制品的定性及定量分析模型。结果标准正态变量变换(standard normal variate transformation,SNV)处理方法结合PLS-DA在模型建立中显示出良好的区分能力。在一维的九点平滑1D9S预处理方法的基础上,使用竞争性自适应重加权采样(competitive adaptive reweighted sampling,CARS)提取特征建立的偏最小二乘回归(partial least squares regressi,PLSR)模型效果最佳。结论基于近红外光谱技术结合化学计量学方法所建立的苦杏仁生品和不同炒制程度的炒苦杏仁定性判别模型和含量预测模型具有较高的准确性,可用于苦杏仁和不同火候炒苦杏仁的快速鉴别。
