用HPGeγ谱方法测定了一个采集自东太平洋的沉积物岩心的^(230)Th和^(231)Pa。对其深度分布规律及其所揭示的海洋学意义进行了研究,用^(230)Th_(ex)、^(231)Pa_(ex)和^(231)Pa_(ex)/^(230)Th_(ex)法计算得到完全一致的沉积速率,平均值为...用HPGeγ谱方法测定了一个采集自东太平洋的沉积物岩心的^(230)Th和^(231)Pa。对其深度分布规律及其所揭示的海洋学意义进行了研究,用^(230)Th_(ex)、^(231)Pa_(ex)和^(231)Pa_(ex)/^(230)Th_(ex)法计算得到完全一致的沉积速率,平均值为1.6 mm/ka。用^(231)Pa_(ex)/^(230)Th_(ex)比值法研究了100 ka时间尺度海洋输出生产力的变化,给出60～80 ka BP期间研究海域有高的输出生产力。展开更多
One of the urgent tasks of the uranium industry in Kazakhstan is the extraction of radionuclide residues from spent uranium wells.We proposed to extract the remains of radionuclides from the drilled wells and to impro...One of the urgent tasks of the uranium industry in Kazakhstan is the extraction of radionuclide residues from spent uranium wells.We proposed to extract the remains of radionuclides from the drilled wells and to improve the radiation safety of the contaminated area.We conducted a chemical analysis of the content of radionuclides in the ore material.The radionuclides U,Th,Pa,Ra,Ac,Rn were extracted,which can be used in industry and medicine in Kazakhstan.展开更多
文摘用HPGeγ谱方法测定了一个采集自东太平洋的沉积物岩心的^(230)Th和^(231)Pa。对其深度分布规律及其所揭示的海洋学意义进行了研究,用^(230)Th_(ex)、^(231)Pa_(ex)和^(231)Pa_(ex)/^(230)Th_(ex)法计算得到完全一致的沉积速率,平均值为1.6 mm/ka。用^(231)Pa_(ex)/^(230)Th_(ex)比值法研究了100 ka时间尺度海洋输出生产力的变化,给出60～80 ka BP期间研究海域有高的输出生产力。
文摘One of the urgent tasks of the uranium industry in Kazakhstan is the extraction of radionuclide residues from spent uranium wells.We proposed to extract the remains of radionuclides from the drilled wells and to improve the radiation safety of the contaminated area.We conducted a chemical analysis of the content of radionuclides in the ore material.The radionuclides U,Th,Pa,Ra,Ac,Rn were extracted,which can be used in industry and medicine in Kazakhstan.
