金属

By the comparison of electronic spectrum and Z-scan of different substituted MPc and MNc, the peripheral substituted MNc had better nonlinear optical properties. It provided a new method to the improvement of the performance of reverse saturable absorption of the laser protective materials.

对不同金属轴向取代的萘酞菁化合物的电子光谱和Z-扫描进行了横向比较，并对相同取代基、金属轴向取代的酞菁化合物和萘酞菁化合物进行了纵向比较，发现周围取代的金属萘酞菁化合物具有较好的非线性光学性能，为提高材料的反饱和吸收性能提供了一种新的途径。

The byproducts using a HZSM-5 supported multi-metal catalyst are polymer of MXDA condensation detected by MS, which is different from the byproducts using the carbon supported metal catalyst.

反应副产物用MS定性分析表明：分子筛负载的多金属加氢催化剂与活性炭负载的多金属催化剂不同。分子筛负载的多金属加氢催化剂产生的副反应主要为MXDA的分子间脱氨缩合反应。

Transition metal nitrides belong to a class of interstitial compounds, have the properties of covalence compound, ion crystal and transitional metals.

过渡金属氮化物是一类金属间充型化合物，兼具有共价化合物、离子晶体和过渡金属的性质。

The biological oxidative ability on DNA of the standard quartziferous dust and crocidolite, which is the carrier of inhaled particles in air pollution, and over ten kinds of metals and those combine and competitive reactions with DNA and chelators have been studied in order to know the role of standard quarziferous dust, crocidolite and metals in the pollution systems.

并对重要的大气污染物可吸入颗粒物的载体石英粉尘和青石棉及其承载的十余种金属离子介导活性氧氧化核酸的作用，金属离子与DNA分子和螯合剂的结合作用与竞争反应，探讨了石英粉尘和金属在污染体系中的作用。

A refining process for nonoxidizing metals, such as silver and gold, in which a metallic mixture is oxidized at high temperatures and base metals are separated by absorption into the walls of a cupel.

烤钵冶金法一种使银和金等金属不氧化的提纯过程，在高温下金属混合物被氧化，低劣金属被分离出来并吸入烤钵的墙上

In the presence of magnetic field and Fe3+ with high concentrations, Magnetohydrodynamics effect was caused in the stripping voltemmetry. More metal ions were deposited on the electrode surface, and then the stripping peak current of metal and the sensitivity of the detection were obviously increased.

在金属的溶出伏安法测定中，磁场和高浓度的Fe3+的共同作用产生的磁流体动力学效应使得更多的金属离子沉积在电极表面，使金属的溶出峰电流明显提高，极大地提高了测量的灵敏度。

We composed the active cyclostyle polymerand then inserted the rare-earth to the cyclostyle polymer by sol-gel method. Then weprepared the new type nanometer oganic rare-earth compounds.

我们设计合成了纳米稀土金属溶胶和活性模板聚合物，然后用溶胶-凝胶法在活性模板聚合物上导入纳米稀土金属化合物，进而制备了新型纳米有机稀土金属复合物。

However, deoxygenation induced further reduction of these metal ions at high temperatures.

过渡金属在二氧化锆基质中的氧化还原特性与其d轨域之电子组态有关，过渡金属具有d5或d10电子组态者(如Mn2+， Fe3+， Cu+，及Zn2+)具有高稳定性能阻绝低温锻烧(~550 °C)时去氢氧化所引发的还原反应，然而高温引发的去氧化可提供更高的还原力，因此这类过渡金属在高温锻烧后(~950°C)将继续还原成低价的物种。

In this review, we describe nuclear magnetic resonance techniques which are widely used to investigate inter-molecular interactions between proteins and diamagnetic/paramagnetic metal ions.

本文简要介绍目前国际上用NMR方法研究抗磁金属离子和顺磁金属离子与蛋白质相互作用的进展，并具体介绍了NMR方法在钙调蛋白、锌指蛋白、朊病毒蛋白等金属离子蛋白研究上的应用。

Density Functional Theory in connection with accurate LCAO basis sets and norm-conserving pseudopotentials were used to study two issues which are (1) The Selective Functionalization of Single-Walled Carbon Nanotubes with Diazonium Radical and (2) The Molecular Dynamic Simulated IR Spectrum of Adsorbed C3H3 and I on the Ag(111) Surface.For the first, we investigated (1) NO2C6H4 direct addition (2) NO2C6H4N2 dissociative addition reaction on semiconductor (8,0), metallic (9,0)and(5,5) carbon nanotubes.

第一部分模拟的结果显示，在半导体性质(8，0)和金属性质(9，0)、(5，5)奈米碳管上，硝基苯自由基(NO2C6H4)的直接加成反应於不同导电性质的奈米碳管间不具有选择性，而硝基苯重氮化合物自由基(NO2C6H4N2)的解离吸附反应会选择性的与金属性质奈米碳管发生反应，因为在金属性质的系统中，奈米碳管於过渡态时会藉由电荷的转移来稳定过渡态的结构，进而帮助反应更快的进行。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。