等浓度

The deformed metal-SWNTs and metal-TCNTs can be transformed to semiconductor or insulator due to deformations resulting to variation of the atomic structure and the nearest-atom transfer integral having relation with the directions.Based on the Boltzmann transport equation and n - electronic energy dispersion relations for individual SWNTs, the theoretical model caculating the current and conductance of the SWNTs is deduced. The low-temperature conductances of undoping or doping SWNTs are studied numerically, the calculated results show that, for the doping SWNTs, the conductance is quantized, i.e.

我们从Boltzmann方程出发，并结合SWNTs的能量色散关系，导出了计算手性SWNTs电导或电流的理论模型，并分别对非掺杂和掺杂SWNTs的低温电导或电流进行数值计算，结果表明：对于非掺杂的SWNTs，其电导是量子化的，即电导随偏压或电子输运能量变化呈跃变的台阶式结构，这些结构随管径增大或温度升高变得不明显；对于掺杂SWNTs，当偏压为某些特定值V_i时，传导电流有跃变，且传导电流的大小、跃变周期及跃变幅度等不是完全由掺杂后的电子浓度决定的，而与管半径R及掺杂后Fermi能级附近的电子态密度有直接关系，随着温度的升高和管径的增大，跃变结构趋于平滑。

The influence of various factors on the efficiency of separation on ammonia nitrogen was investigated, including the surfactant dosage, the value of pH in the external phase, the concentration of sulfuric acid in the internal phase, the ratio between the volume of oil phase and the volume of water phase and so on.

用ME表面活性剂制作的乳液萃取冶金废水中的氨氮，考察了表面活性剂用量、外相水pH值、膜内相硫酸浓度、油内比、乳水比等因素对氨氮去除率的影响。

Particularly last year , in accordance with Japanese client requirement , made great effort on positive list and agricultural chemicals' remainder . We strictly control agricultural chemicals' selecting 、 purchasing 、 preserving 、 concentration and spraying , get better effect and gain client's intrust and good appraisal .

特别是去年，针对日本客户的要求，在对应肯定列表和农药残留方面狠下功夫，在农药的选定、采购、仓库管理、浓度管理和喷洒管理等环节都严格控制，收到了较好的效果，并且赢得了客户的信任和好评。

Using Agilent 8453 ultraviolet-visible spectrophotometer, the affecting factors were studied on the kinetic processes in iodometry involved in the volatilization of iodine and the oxidation of iodide ion by dissolved oxygen, in particular such as the shape of the vessel, the volume of the solution tested, the concentration of KI and the temperature and the acidity of tested solution.

利用紫外－可见分光光度仪测量了I2挥发、I在酸性介质中被溶解氧氧化的动力学过程，着重研究了容器形状、溶液体积、KI浓度、温度等因素对I2挥发速率的影响以及溶液酸度与I氧化反应速率的关系。

The influences of alkali concentration, temperature, polymer and additive on ionic conductivity and electrochemical stability were studied with orthogonal experiments and single factor experiments design, the relation of structure and ionic conductibility is researched by FIRT, XRD,DSC and SEM analysis ways.

结合正交设计实验和单因素实验研究了碱浓度、温度、聚合物以及增塑剂对固体电解质离子电导率、电化学稳定性的影响，用红外光谱、X衍射分析和差热分析等手段研究其结构与离子导电性能的关系，摸索出了本实验条件下的最优方案。

It has been proved that the sensitivity of analytes can be significantly enhanced by adding small amounts of oxalic acid,especially for the elements with ionization potential between 9 and 11 eV.

结果表明，低浓度乙二酸对所分析元素的灵敏度具有显著的增敏效应，尤其是对电离电位在9～11eV的Be，Zn，Se，As，Sb，Hg等高电离电位元素。

In this study, the reduction of hexavalent chromium in aqueous solutions by limonite was investigated. The influences of limonite addition, initial Cr concentration, pH value, reaction temperature, the size of ironstone particles and other ions were tested in batch experiments.

本文采用褐铁矿对水中Cr进行处理研究，考察了褐铁矿投加量、Cr初始浓度、pH值、反应温度、铁矿石粒径大小以及添加不同物质等因素对褐铁矿去除效果的影响。

The concentrations of isopentane, 2-methyl-pentane, pentane and 3-methyl-pentane which are from automobile exhaust and gasoline evaporation were highest in alkanes. Benzene/toluene ratio was close to 0.5 which is the characteristic value of automobile exhaust. The concentrations of pinene and isoprene were highest in alkenes.

烷烃类物质中异戊烷、2-甲基戊烷、正戊烷和3-甲基戊烷等机动车尾气或汽油挥发特征性物质浓度最高；芳香烃类物质中苯／甲苯的特征比值略高于机动车尾气排放特征比值0.5；烯烃类物质以植物排放的蒎烯、异戊二烯为主。

The effect of Joule heat on the separation under the critical separation-voltage had also been investigated.

在微流控芯片上，研究了管路-电极的距离，缓冲液的浓度，管路的截面积等参数对临界电压的影响。

Methods: The cyclodextrin, concentration, pH, organic solvent were studied, and the results indicated that the enantiomer of ephedrin and ephedrine levorotatory were baseline separated under the following experimental conditions: uncoated fused silica capillary (75 μm× 68 cm), 25 mmol/L Tris, 2% HP-β-CD and 1% SBE-β-CD, pH was adjusted at 3.0 by phosphoric acid, and 15 kV separation voltage.

以SBE-β-CD和HP-β-CD二元环糊精为手性添加剂，探讨了环糊精种类及浓度、pH、有机溶剂种类等因素对麻黄碱及伪麻黄碱对映体拆分的影响，结果表明：毛细管：未涂渍熔融石英毛细管75μm×68 cm（有效长度60 cm）。分离用缓冲液为25 mmol/L的Tris缓冲液，含2.0% HP-β-CD和1.0% SBE-β-CD，用磷酸调节pH至3.0。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！