铀的

Box 275(26) Beijing 102413, China; 2 Beijing Institute of Nuclear Engineering, Beijing 100840, ChinaAbstract The studies of facts effecting on stripping Np from organic phase with HNO 3 and the determinations of Np in the stripping extractor with the reducer of n butyraldehyde are carried out.

单级实验结果表明，正丁醛的加入和延长正丁醛与镎的相互作用时间，有利于从有机相中反萃镎；正丁醛的加入对铀、钚分配比的影响不大；但铀浓度增加会增加镎的反萃。

Conventional radiochemical methods such as alpha spectrometry, neutron activation analysis, liquid scintillation system, fission track and gamma spectrometry for the quantitative determination of neptunium and plutonium often require complicated and time-consuming sample preparation and separation procedures.

研究环境中铀、镎、钚等长寿命放射性核素的精密测定，对保护公众安全和保护环境，对了解核设施的历史操作情况和现状，都具有重要意义。环境样品基体复杂，铀、镎和钚等锕系元素含量非常低，在复杂的生态条件下，这些核素常常具有复杂多变的化学形态，要准确测定其含量，必须要有灵敏可靠的检测方法。

The distribution of uranium isotope composition is not only can be used to predict the location of uranium ore body, but also can be used to study the rolling of the roll during the process of the ore body formation.

该砂岩型铀矿床的铀同位素组成分区特征不仅是预测铀矿化定位的依据，而且也充分说明了铀富集成矿过程的滚动性。

It resumed its work at the plant near Isfahan, where uranium oxide is converted to uranium hexafluoride gas--but only under the watchful eyes of the IAEA inspectors.

它重新开始它的工作在植物近的 Isfahan，哪里铀氧化物是转换对铀 hexafluoride 瓦斯--除了只有在那之下注意的眼睛国际原子能总署检查员。

Canada is the world's largest exporter of uranium, and supplies 30 percent of the world's uranium.

加拿大是世界上最大的铀出口国，和用品， 30 ％的世界的铀。

The uranium may be present in only very low concentrations - a few parts per million - in the form of the uranyl iron, UO 2 (the same ion present in the mineral Zippeite), but it can be recognized by the distinctive fluorescence.

铀，可目前只在非常低的浓度-数百万分之-在形式上的铀铁， u o 2（同一离子目前在矿产zi ppeite），但它可以通过独特的荧光。

There are several premier uranium districts, which have a history of large-scale uranium production: Athabasca, Australia's Northern Territories or South Australia, Grant's New Mexico, Wyoming, Kazakhstan, Niger, and Namibia.

有几个总理铀区，其中有历史的大型铀生产：的Athabasca，澳大利亚北部地区或南澳大利亚，Grant的新墨西哥州，怀俄明，哈萨克斯坦，尼日尔和纳米比亚。

International exchange and technical cooperation on decommissioning disposal of uranium mine and mill facilities of China are introduced.

介绍了我国铀矿冶设施退役治理技术的国际交流和有关技术合作情况，归纳了国外铀矿冶设施退役治理的特点，对今后的退役治理工作提出建设性意见。

In order to study the reaction kinetics of uranium with CO or CO 2,uranium samples of different forms are obturated in reaction vessels and then CO or CO 2 is filled in. Gases in vessels are analyzed at different storage time.

在一定温度下，将不同形态的铀样品密闭贮存在容器中并充入一定压力的高纯CO或CO2 气体，通过定期测量贮存容器中气体组成，初步研究了铀与CO或CO2 的反应动力学。

Novak mentioned Plame by name in a July 14, 2003, column critical of Plame's husband, retired diplomat Joseph Wilson, after Wilson reported an Iraqi purchase of uranium "yellowcake" from Niger was highly unlikely.

普拉姆的丈夫约瑟夫-威尔逊是一位退休的外交官，他之前曾提交报告，认为伊拉克向尼日尔购买&黄饼&(核反应燃料重铀酸铵或重铀酸钠)的传闻几乎不可能属实。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。