铀系

  • 网络uranium series;u-series;U-Th-Pa;u-s
铀系铀系
  1. 洞穴石笋高精度ICP-MS铀系年代学与西南岩溶地区古气候变化研究

    Research on the High Precision ICP-MS Uranium Series Chronology of Cave Stalagmites and the Paleo-climatic Changes in the South-Western Karst Region , P.R. China

  2. 介绍用热电离质谱(thermalionizationmassspectrometry,TIMS)铀系法对海洋珊瑚定年的测定及古环境研究的一些成果。

    Experimental results of coral dating and paleoenvironment studies by using the thermal ionization spectrometry ( TIMS ) uranium series method were introduced .

  3. 泥河湾叠层石样品的ESR与铀系法测年对比

    ESR and U-series dating of stromatolite samples from Nihewan basin

  4. 本文叙述了用厚源α计数技术测定TL和ESR年代中钍系和铀系年剂量的原理和方法。

    The thick source alpha counting in TL and ESR dating is described .

  5. Barbados岛珊瑚礁高精度铀系年龄及讨论

    The conventional island high precision dating and discussion of coral reefs from Barbados with U series method

  6. ESR测年法近年来迅速发展,填补了铀系不平衡法及14C法所遗留下来的一些空白。

    Recently ESR Dating Method develops quickly , supplying a gap of Unbalanced U System Dating Method and ~ ( 14 ) C Dating Method .

  7. 采用MCNP模拟软件和水分对天然伽玛射线的影响实验,对不同水分土壤中铀系和钍系天然伽玛的原始谱进行了模拟运算。

    The original spectrum from the soil is simulated by MCNP and the experiment of influence to natural gamma-ray is done .

  8. 岩溶石笋、海洋珊瑚、湖泊沉积物等信息载体可以用热电离质谱(TIMS)铀系技术定年。数据表明,1&3层的年代比目前的有些提法要早一些。

    Cave stalagmites , corals , lake sediments are suitable for dating using the thermal ionization mass spectrometry ( TIMS ) uranium series method . 1 were dated with uranium series dating .

  9. 用NaI(Tl)γ谱仪测定地层铀系、钍系和钾&40γ照射量率的逆矩阵法

    A inverse matrix method for measuring individual exposure rate from ~ ( 238 ) u series , ~ ( 232 ) th series and ~ ( 40 ) k of environmental gamma radiation by a (?) 100 × 100 nai ( tl )γ spectrometer

  10. 用高精度热电离质谱(TIMS)铀系法测定碳酸盐标样的年龄,测定结果与α谱仪铀系法进行比较,铀含量和年龄值均吻合。

    The age of stalagmite was determined by high precise thermal ionization mass spectrometry ( TIMS ) with uranium series age method . Uranium content and age of the standard carbonate were in agreement with standard values .

  11. 华南若干旧石器时代地点的铀系年代

    Uranium series chronological sequence of some Palaeolithic sites in South China

  12. 南极普里兹湾海域铀系同位素的分布

    Distribution of uranium-series isotopes in the Prydz bay , Antarctica

  13. 铀系等时线法测定腾冲地区火山岩的年龄

    Uranium-series dating of young volcanic rocks from Tengchong region , southwestern China

  14. 铀系不平衡定年技术是第四纪年轻年代学的重要定年手段。

    Uranium series dating technique is the important means of Quaternary chronology .

  15. 水-岩反应的铀系不平衡判别

    Judgement on water_rock interaction in crystalline rocks using uranium_series disequilibrium

  16. 铀系组分法测定年青火山岩年龄的研究

    Studies on the uranium series component dating method for young volcanic rocks

  17. 浙江桐庐人类头骨的铀系年代

    U-series dating of the hominid skull from tonglu , zhejiang

  18. 热电离质谱铀系法测定珊瑚及对古环境研究

    TIMS uranium series method for coral dating and paleoenvironment research

  19. 江苏镇江莲花洞动物化石铀系年代

    U-series dating of fossil teeth from Lianhua cave in zhenjiang , jiangsu Province

  20. 云南西畴仙人洞动物化石铀系年代

    U-series dating on fossil teeth from Xianren cave in xichou , Yunnan Province

  21. 南海珊瑚礁铀系年龄及其地质意义

    Uranium-series dating of coral reefs from South China Sea and its geological significance

  22. 铀系定年及其在南海沉积物研究中的应用

    Uranium series dating and its application in sedimentological studies of South China Sea

  23. 冲绳海槽火山岩同位素特征及铀系组分法测年

    Isotopic feature and Uranium-series component dating of the volcanic rocks in Okinawa Trough

  24. 中国东都喀斯特洞穴沉积物铀系年代

    The U-series ages of speleothem of karst caves in the east of China

  25. 铀系不平衡样品年剂量的确定

    Determination of annual dose for unbalanced U series samples

  26. 周口店遗址骨化石的铀系年代研究

    Study on uranium series dating of fossil bones and teeth from Zhoukoudian site

  27. 高精度热电离质谱铀系法测定北京猿人遗址年代初步结果

    Preliminary results on U-series dating of Peking Man Site with high precision tims

  28. 土壤中水分含量对铀系、钍系天然γ能谱影响的分析

    Effect of moisture in soils on natural gamma spectrum of uranium-series and thorium-series

  29. 热电离质谱铀系法测定碳酸盐标样

    Determination of Age for Standard Carbonate Samples by TIMS with Uranium series Age Method

  30. 桐梓人遗址岩灰洞的铀系年龄

    U-series age of Yanhui cave , the site of Tongzi man grey quadratic form