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- The effects of rare earth element La during hydrogenolysis were studied by using SEM,X-ray diffraction and chemical and physical analysis. 通过采用SEM、X射线衍射、化学元素分析、物理分析等技术,系统地研究了稀土镧对氧化钼氢还原的影响。
- Determination of Ultratrace Rare Earth Element La in Liver and Bone of the NIH White Rats by ICP-AES 电感耦合等离子体发射光谱分析实验小、白鼠骨、肝中超微量稀土元素镧
- rare earth elements La 稀土元素La
- Rare Earth Element La 稀土元素镧
- Distribution pattern of rare earth element;? 稀土元素分布模式?
- The solid ternary complexes of rare earth elements(La,Nd,Gd,Er)with Tiron and nitrogen heterocylic ring have been synthesized in aqueous medium . 在水溶液中,制备了稀土(镧、钕、钆、铒)与钛铁试剂,含氮杂环(吡啶,喹啉,邻菲咯啉)三元固体配合物,通过化学分析及元素分析,确定了配合物的组成。
- The pot experiment was conducted to analyze the concentration and distribution characteristics of rare earth elements (REEs) lanthanum (La) in forages upon the foliage and soil dressing the La. 摘要设立盆栽试验,研究不同施用条件(喷施和土施)下稀土元素镧在牧草体内的含量及分布特征。
- The color of Apatite is often due to the presence of rare earth elements. 磷灰石的颜色常取决于存在的稀土元素。
- P. Henderson ed., Rare Earth Element Geochemistry, Elsevier, Amsterdam, 1984. 涂光炽等编著,地球化学,上海科学技术出版社,上海,1984。
- Characteristics of trace and rare earth elements suggest that Ophiolite originated from the setting similar to mid-ocean ridge. 微量元素和稀土元素特征显示蛇绿岩形成于类似洋中脊的构造环境。
- Accumulation and toxicity of rare earth elements in brain and their potential effects on health. 稀土元素的脑部蓄积性、毒性及其对人群健康的潜在危害
- Besides,the mechanism of B C N RE co-cementation and the effects of rare earth elements are diecussed. 本文对B-C-N-RE共渗的机理及稀土元素的作用作了初步的探讨。
- Rare earth elements can improve the plating bath performance and deposit quality, and has good application prospect. 稀土添加荆可改善镀液性能,提高镀层质量,有良好的应用前景。
- A survey was conducted to reveal rare earth elements (REEs) in sediments from Baotou section of the Yellow River. 采用室外现场采样及室内分析方法,研究了黄河包头段柱状沉积物中稀土元素的分布特征。
- The mechanism of pure rare earth elements improving electrical conductivity of industrial alu... 还对镧、铈降低铝常温电阻率的机理作了初步的探讨。
- The effects of rare earth elements on Reformation of amination-catalyst for fatty alcohol were analyzed in this paper. 研究表明,稀土元素具有和镍相反的对高沸物成分的抑制作用,稀土元素的加入普遍提高了脂肪醇胺化反应的选择性。
- Application of rare earth elements(REEs)in agriculture is a new application area of REEs created by China. 稀土农用是我国独立开创的稀土应用领域,30年来,取得了巨大的经济效益。
- Effects of rare earth element lanthanum on the activities of invertase, catalase and dehydrogenase in red soil. 镧对红壤转化酶、过氧化氢酶和脱氢酶活性的影响。
- ICP-AES studies on characteristics of distribution, accumulation and transportation of rare earth elements in soil-Dicranopteris dichotoma system. 感耦等离子体发射光谱法研究土壤-铁芒萁系统中稀土元素的分布、累积和迁移特征。
- The bioaccumulation of rare earth elements in the internal organs of fish and their effect on the activities of enzymes in liver. 稀土元素在鱼体内脏中的富集及对肝脏中酶活性的影响。