提示稀土元素钇和镨具有一定的遗传毒性。
It suggests that rare-earth elements yttrium and praseodymium have certain genotoxicity.
镨，金属镨，镨金属。
用铂丝标记技术研究了镨锆黄颜料的形成机理。
The mechanism of formation of yellow praseodymium zircon pigments has been investigated by using platinum wire-marker technique.
用途：用作陶瓷釉镨黄颜料和稀土永磁合金的原料。
Uses: used as important raw material of yellow pigment in ceramics glaze. Also used to make RE permanent magnetic alloys.
镨也是与矿化剂反应后，以气态迁移到锆石反应位置的。
Praseodymium reacts with mineralizer, and is transported in vapor state to the reaction site of zircon.
用途：用作陶瓷釉，镨黄颜料、光纤制作和稀土永磁合金的原料。
Function: Used for ceramic glaze, pigments for pr yellow, fiber production and materials of rare earth permanent magnet alloy.
本文研究了铕酞菁、钕酞菁利镨酞菁配合物的合成、提纯与表征的方法。
The synthesis, refinement and characterization of the phthalocyanine of europium, praseodymium and neodymium were intensively studied.
本项目研究了不同基质中三价镨离子的真空紫外(VUV)光谱特征。
The spectroscopic properties in VUV-Vis spectral region of Pr3 ions in different solids are investigated.
镨在柠檬酸溶液体系中可定量地进入汞相，钕的电沉率亦达97%左右。
In citric acid praseodymium could be quantitatively deposited at mercury cathode, while the deposition percentage of neodymium is 97%.
用微核试验法研究了氯化钇和氯化镨对体外培养的人淋巴细胞微核率的影响。
Methods Effects of yttrium chloride and praseodymium chloride on human lymphocytes cultured in vitro were studied by micronucleus test.
这种方法可以应用到制备氧化镨，但是，无法成功应用到制备其他轻稀土氧化物。
This method could also be applied to prepare praseodymium oxides, however, it was not successful in preparing other light rare earth oxides.
镨、钕在季铵汞齐电极和在锂汞齐电极上都能形成汞齐，而在钠汞齐电极上则不能。
Praseodymium and neodymium could be deposited at lithium or quaternary ammonium amalgam electrode, but not at sodium amalgam electrode.
用部分镨替代钕对磁性能的影响不大，但可以降低材料的价格，这对于产业化生产非常有利。
The substitution of Pr for partial Nd has no obvious influence on the magnetic properties, which can lower the material price, so it is very favorable for industrialization.
结果表明，添加的镧镨铈混合稀土只有少量固溶在镁基体中，绝大部分形成了稀土化合物，沿晶界呈网状分布。
The results indicate that most of the rare-earth element are concentrated along the boundary in network of metallic compound with a few solutioned into the Mg matrix.
研究了纯镍铸铁焊条冷焊时，稀土金属镧、铈、镨、钇及钕对焊缝热裂纹敏感性的影响规律，并分析了铈对焊接接头力学性能和加工性能的影响。
The influence of Lanthanum, Cerium, Yttrium, Praseodymium and Neodymium on weld hot cracking susceptibility of the pure nickel electrode used for cold welding of cast iron was studied.
研究了纯镍铸铁焊条冷焊时，稀土金属镧、铈、镨、钇及钕对焊缝热裂纹敏感性的影响规律，并分析了铈对焊接接头力学性能和加工性能的影响。
The influence of Lanthanum, Cerium, Yttrium, Praseodymium and Neodymium on weld hot cracking susceptibility of the pure nickel electrode used for cold welding of cast iron was studied.
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