neptunium

noun

1. 镎（放射性化学元素）
   a chemical element. Neptunium is a radioactive metal.

1. Simulation study of the chemical forms of Neptunium and plutonium in groundwater from a borehole in the northwest region
   镎、钚在西北某区地下水中化学形态的模拟计算
2. Only two, neptunium ( 93) and plutonium ( 94), occur in nature, and only as traces in uranium ores as a result of neutron irradiation.
   自然界里只有錼（93）和钸（94）两种超铀元素，而且只以痕量存在于铀的矿物中，是受中子辐照后的产物。
3. Based on the principle of flow injection analysis ( FIA), a special instrument for measuring uranium, plutonium and neptunium is developed;
   以流动注射分析（FIA）原理为基础，研制了测定铀、钚、镎的专用仪器；
4. Study on Neptunium Control in Co-decontamination Step of Purex Process and the Extraction of New Extractant Amido Podand
   Purex流程中镎在1A槽的走向控制和新型萃取剂酰胺荚醚的萃取热力学及应用研究
5. The Preparation of Alpha Sources for Plutonium, Neptunium and Americium by Electrodeposition
   电沉积法制备镅、钚和镎的α源
6. Three rapid analytical methods for measuring uranium, plutonium and neptunium are established respectively.
   并建立了分别测定铀、钚、镎的三个快速分析方法。
7. Chemical Forms of Neptunium and Plutonium in Disposal Site and Their Influence Factors
   镎、钚在处置区的存在形式及影响因素
8. Modelling of geochemical behavior of neptunium, plutonium and strontium in a loess aquifer
   镎、钚、锶在黄土地下水中地球化学行为的模拟研究
9. Studies on the absorption spectra redox and complexation reaction of neptunium ions in carbonate solution
   镎离子在碳酸盐溶液中的吸收光谱、氧化还原及络合反应的研究
10. The thesis focuses on the study of the reactions of hydroxyurea ( HU), a novel salt free agent, with uranium, neptunium and plutonium in order to investigate the possibilities of its application in the Purex process ( 1B) for uranium and plutonium separation.
    本论文重点研究了一种新型无盐试剂&羟基脲（HU）与铀、镎、钚相互作用的化学，旨在研究这种新型无盐试剂在Purex流程铀、钚分离段（1B）中应用的可能性。
11. Migration of Neptunium and Plutonium in Hydrofracturing Disposal
    水力压裂处置中镎、钚迁移行为的模拟研究
12. The concentration of nitrous acid influences the valence of elements such as neptunium, plutonium and some fission products. Thereby, it would influence the recovery of plutonium, the tend towards of neptunium and the decontamination of fission products.
    亚硝酸浓度的高低，影响镎、钚以及个别裂片元素的价态，从而影响钚的收率和镎的走向以及裂片元素的去污程度。
13. Simulation study of the extraction behavior of neptunium from high active reprocessing liquid waste of power reactor fuel
    从动力堆核燃料后处理强放废液中提取镎的模拟试验研究
14. In the spent fuel reprocessing process and for the environmental concerns, very strict control is required for determination of neptunium.
    在核燃料后处理工以及环境中，对镎的控制要求十分严格。
15. Chemical forms of neptunium in hydraulic fracture disposal site
    水力压裂处置条件下核素镎的存在形态
16. The desorption experiments in the same pH of solutions as adsorption experiments show that the desorption coefficient is bigger than the adsorption coefficient, so the adsorption of neptunium on silica gel in nitric acid belongs to irreversible process.
    在与吸附实验同样pH值的条件下，对吸附在硅胶上的三种价态的镎进行洗脱实验，发现解吸分配系数大于吸附分配系数，说明镎在硅胶上的吸附是不可逆过程；
17. Two alternative flow routes are used for measuring plutonium ( or neptunium) and uranium respectively.
    两套可供选择的流路分别用于测钚（或镎）和铀。
18. Simultaneous electrodeposition of uranium, neptunium, plutonium, americium, and curium from oxalic acid-nitric acid system
    草酸-硝酸体系中铀、镎、钚、镅、锔的同时电沉积
19. The study of kinetics and mechanism of the reduction of neptunium ( ⅵ) by n-butyraldehyde
    正丁醛还原Np（Ⅵ）的动力学及机理研究
20. Study on the Method and Instrument for Rapid Determination of Uranium Plutonium and Neptunium in Spent Fuel Reprocessing Solution by Flow Injection Analysis
    FIA快速测定乏燃料后处理工艺溶液中铀、钚、镎的方法及仪器研究
21. The behavior and control of neptunium in Purex Process
    Purex过程中镎的行为与控制
22. Age-specific biokinetic models for actinides of plutonium, americium and neptunium
    锕系元素钚、镅、镎年龄相关的生物动力学模式
23. Study on photochemistry of neptunium uranium diamide coexisting in nitric acid system
    镎－铀－肼共存体系的光化学研究
24. Spectrophotometry for photochemistry study of neptunium in organic system
    分光光度法对有机体系中镎的光化学研究
25. The method including the process of extraction chromatography and the mass spectrum measurement for the exact analysis of micro neptunium in the existence of large quantity of uranium is established.
    建立了准确测定常量铀中微量镎的方法。方法包括萃取色层法分离和质谱法测量。
26. The investigation on neptunium behavior in electrolytic partitioning process of uranium and plutonium
    电解还原铀钚分离过程中镎行为的研究
27. The recovery of neptunium of the whole analysis procedure is more than 80% and the decontamination factor of uranium is more than 1 × 10 6. This scheme is successfully used in the analysis of neptunium in aqueous uranium product of bench scale experiment.
    结果表明，全程Np的回收率80%，对U的去污因子DF1×106。用该法成功地测定了后处理流程台架温实验水相铀产品中237Np的含量。
28. Researches possible factors influencing the kinetics of neptunium reduction with 1,1-dimethylhydrazine in nitric acid system with spectrophotometry.
    采用分光光度法，对硝酸体系中1,1-二甲基肼还原Np（Ⅴ）的动力学进行了研究，求出了反应的动力学方程。

noun

1. a radioactive transuranic metallic element

   Synonym:    Npatomic number 93