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The complexing properties of compounds 10a, 10b, 11a and 11b toward alkali metal ions were studied by 〓H NMR titration, ESI-MS, UV-Vis spectra, Fluoresence spectra and liquid-liquid extraction. The results show:(1) the 1:1 complexes were formed.(2) The calix-crown 10a, 11a have a higher selectivity for Na〓 ions, whereas 10b, 11b for K〓 ions.(3) The complexing ability toward alkali metal ions was enhanced when the calix-crown have side arm carbonyl.(3) The coordination of alkali metal ions toward phenoxy, carbonyl and crown ethereal oxygens take place by rotation around the carbon-carbon bond of carbonyl and methylene.
六，用〓H NMR滴定，ESI-MS，UV-Vis，Fluorescence，液-液萃取实验研究了10a，10b，11a和11b对金属离子的配位性质，研究结果表明：1）杯芳烃冠醚衍生物同碱金属离子形成了1：1配合物，化合物10a、11a对Na〓具有较高的配位能力，化合物10b、11b对K〓具有较高的配位能力；2）在杯冠醚环的旁边引入带有羰基氧原子的基团作为侧臂参与配位可以加强对碱金属离子的配位能力；3）金属离子分别同苯酚氧，羰基氧，聚氧醚链氧发生了配位，配位过程中侧链基团涉及到了羰基碳与亚甲基碳的碳碳键的旋转过程。
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Transition probabilities, oscillator strengths, and lifetimes of configurations, multiplets, and individual lines for many-electron atoms and ions are studied employing the WBEPM theory. Transition probabilities and oscillator strengths for alkali metal atoms, alkaline-earth elements Be, Mg, Be , and Mg , carbon atoms and its ions , nitrogen atom and its ions , oxygen atoms and its ions , fluorine atom, Ne , and IB elements are calculated. Lifetimes of C, N, and O atoms are evaluated as well.
运用WBEPM理论对多电子原子和离子的组态、谱项和能级间的跃迁几率、振子强度以及辐射寿命进行系统地研究，计算了碱金属原子、碱土金属的Be、Mg原子及其一价离子、C原子及其离子、N原子及其离子、O原子及其离子、F原子、Ne离子和重金属IB族原子的跃迁几率和振子强度以及C、N、O原子的辐射寿命。
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We review the effect of rare earth ions on bone metabolism as the following three aspects:(1) effect of rare earth ions on differentiation and function expression of osteoblasts and osteoclasts;(2) effect of rare earth ions on the osteogenic and adipogenic differentiation of bone marrow stromal cells;(3) effect of rare earth ions on bone mineral phase of animals.
本文回顾了稀土离子对骨代谢影响的研究进展，探讨了其药用和安全性问题，主要从以下三个方面进行综述：(1)稀土离子对成骨细胞和破骨细胞的分化和功能表达的影响；(2)稀土离子对骨髓基质细胞成骨分化和成脂分化的影响；(3)稀土离子对动物骨矿物相的影响。
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competing ions：竞争离子
诺司卡品noscapine | 竞争离子competing ions | 亲脂性lipophicity
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ions：離子
这些带电荷之粒子(particles)称之为离子(ions). 放出电 子产生氧化反应之电极称之为阳极(anode),得到电子产生还元化应 之电极称之为阴极(cathode). 整个反应过程称之为电解(electrolysis).
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ions：泛欧数字式移动通信系统
MS PWR LEVEL 手机功率电平 | IONS 泛欧数字式移动通信系统 | NC 未连接
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ions：游子
逆潮 inverted tide; reversed tide | 游子 ions | 光渗 irradiation
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ions：蒸餾水
Formula : 分子式 | ions 蒸餾水 | Penicillin : 青黴素
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