查询词典 transition element

The macrocyclic polyamines are a kind of excellent ligands and have a substantially high binding affinity with transition metal ions. Macrocyclic polyamine metal complexes as enzyme models are widely used in chemical biology, medicine and gene therapy. 1, 4, 7, 10-tetrazacyclododecane is a representative macrocyclic polyamines compound and shows high binding affinity with transition metal ions, such as Zn, Cu and Co. Their metal complexes especially multinuclear complexes were widely used in DNA, RNA recognition.

大环多胺化合物是一类性质独特的优秀配体，具有良好的金属配位能力，其金属配合物作为人工酶模型广泛应用于核酸结构及功能研究、基因表达与调控、抗癌药物的研制等生物、化学和医学领域。1，4，7，10-四氮杂十二烷是典型的大环多胺化合物，对过渡金属离子Zn， Cu and Co有良好的配位能力，这些金属配合物特别是多核金属配合物被广泛应用于DNA识别中。

The phase transition temperature range of the self-crosslinked PNIPAM hydrogel microspheres was very narrow, and they had nearly noncontinuous phase transition behavior.

自交联PNIPAM水凝胶微球的相转变温度范围很窄，接近非连续体积相转变行为。

The glass transition temperature from DMTA analysis revealed the glass transition temperature of the extragallery cured epoxy resin and was in relation to the curing temperatures. Addition of organophilic montmorillonite led to the disappearance of the α' peak of loss tangent of the nanocomposites.

DMTA测试表明，所测的玻璃化转变温度是层外固化环氧树脂的玻璃化转变温度，并发现二亚乙基三胺固化环氧树脂纳米复合材料的玻璃化转变温度与固化温度紧密相关，且加入蒙脱土后纳米复合材料的低温α'松弛峰消失。

Organozinc reagents are an important type of organometallics in organic synthesis, which can undergo transformation with a variety of transition metal salts leading to new transition metal compounds.

有机锌试剂是一类优良的有机金属试剂，由于反应活性较低，很多活性官能团都可以存在于这类金属试剂中。

Organozinc reagents are an important type of organometallics in organic synthesis, which can undergo transformation with a variety of transition metal salts leading to new transition metal compounds.

中文摘要：有机锌试剂是一类优良的有机金属试剂，由于反应活性较低，很多活性官能团都可以存在于这类金属试剂中。

They have several meters of paleosol developed on the top of overbank silt, suggesting that the abandonment of each terrace due to river incision occurs during the transition from glacial to interglacial climates and there may be a link between the production of terraces and glacial-interglacial climatic cycles. However, it is not every glacial-interglacial transition during the last 1,240ka that terrace can form and preserve.

黄河各阶地河漫滩顶部都有一层古土壤发育表明黄河下切形成阶地发生在古土壤开始发育的冰期向间冰期的过度阶段，但是并非1，240ka以来的每次冰期—间冰期的气候交替都能引起黄河下切形成阶地。

The transition states of the reaction between THF、 butylene oxide and secondary oxonium ion were acquired. By using frequency analysis and inner reactioncoordinate analysis the rationality of these transition states were affirmed.

分别对四氢呋喃和环氧丁烷，绘出了链增长反应的势能面曲线，得到四氢呋喃链增长反应的活化能为116.749kJ/mol；环氧丁烷链增长反应的活化能为92.672kJ/mol。

China's flora something crisscrossing north-south transition zone, our Palaearctic and Oriental animals intersection transition zone, the South and the North of various animals to survive and multiply the ideal habitat.

也是我国植物区系东西交错、南北过渡带，我国古北界和东洋界动物的交汇过渡区，南北方各种动物生存繁衍的理想栖息地。

A phase-field model was built by optimizing characteristic parameters in the convec-tional phase-field model for peritectic transition, which is suitable to simulate microstructure evolution for peritectic transition of specific alloys.

通过对当前包晶相变相场模型特征参数的优化，建立了适合对具体合金包晶相变微观组织演化进行模拟的相场模型。

In order to improve the electrocatalytic activity of the anode in the Direct Methanol Feul Cell, three kinds of transition metal substituted phosphomolybdic acid modified platinum electrodes were prepared, and the electrochemical behavior in the sulphuric acid solution of transition metal substituted phosphomolybdic acid modified platinum electrodes and their electrocatalytic effects of methanol oxidation were studyed. The anti-poison effect to carbon monoxide of the prepared electrodes were studied by the carbon monoxide adsorbing.

为了提高直接甲醇燃料电池阳极催化活性，本文研究了三种过渡金属取代磷钼酸修饰铂电极在硫酸溶液中的电化学行为及对甲醇的电催化氧化作用，并利用一氧化碳吸附实验评价了三种过渡金属取代磷钼酸修饰铂电极的抗一氧化碳毒化性能。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。