正氢

The key to the satisfaction of hydrogen sulfate catalyst of butyl acrylate.

本文主要研究以硫酸氢纳为催化剂合成丙烯酸正丁酯。

Single-walled carbon nanotube array ; hydrogen storage ; physisorption ; grand canonical ensemble ; molecular dynamics simulation

单壁碳纳米管阵列；物理吸附；储氢；巨正则系综；分子动力学模拟

Thirdly, by adopting Lennard-Jones potential model and MD method, we build a MD simulation cell, which contains the information of a Grand Canonical Ensemble, and the elastic collision mechanism, and then simulate the process of hydrogen physisorption in single walled carbon nanotube.

然后，建立一个包含巨正则系综信息的分子动力学模拟元胞和弹性碰撞机制，采用Lennard-Jones势能模型和MD方法，对单壁碳纳米管储氢的物理吸附过程进行了模拟计算。

The catalyst and technological conditions that suitable for hydrogenation of castor oil are selected by orthogonal experimental design.

通过正交试验筛选出适合蓖麻油加氢的催化剂及相应的工艺条件。

The article puts forward the detecting method of using normal butyl alcohol as outer standard substance, using PEG- 20M as fixation phaseand and hydrogen flame detecter, using methanol as solvent, detecting the content of trace MMA from composite material of artificial skull with gas phase chromatography method.

采用氢气焰离子化检测器，以正丁醇为外标物，PEG-20M为固定相，甲醇作为溶剂，气相色谱法测定复合材料人工颅骨中微量MMA的含量。

The crystal of DPCP-ETSC belongs to the orthorhombic system, space group Pna21, and its lattice parameters are as follows: a=1.1478 (2) nm, b=1.3545 (2) nm, c=1.1994 (2) nm, V=l.8646 (4) nm^3, Z=4, Dc=1.345 g/cm^3,μ=0.194 mm^(-1), F (000)=792, R=0.0345, wR=0.0694. The intermolecular hydrogen bonds led to the formation of chain-like one-dimensional compound along c axis and extended along ab plane to form the wave-like supramolecular structure.

DPCP-ETSC晶体属于正交晶系，Pna21空间群，晶胞参数：a=1.1478(2)nm，b=1.3545(2)nm，c=1.1994(2)nm，V=1.5646(4)nm^3，Z=4，D=1.3459/立方公分，μ=0.194mm^(-1)，F(000)=792，R=0.0345，wR=0.0694，此化合物通过分子间氢键形成沿c轴成链状，沿ab平面成波浪状的超分子结构。

First, the PVC toy is crushed up, taked up by the alkyl to crank out fathomable solution of the muster. Secondly, we adopt gas chromatogram. The detector is flame ionization detector. Finally, we use inner mark to confirm the quantity.

本文先将塑料样品进行粉碎、用正己烷溶剂抽提，然后采用气相色谱法，选用氢火焰电离检测器，采取程序升温进行检测，用内标法对其进行定量分析。

METHODS:3 levels from each of the amount of four factors-excipient calcium carbonate,tween-80,starch and emollient (magnesium stearate:french chalk) were subjected to the orthogonal design with the parameter of dissolution of the harmine in tablet as an index.

以辅料碳酸钙、吐温-80、淀粉及润滑剂用量为4因素，每因素取3水平，以总碱片中去氢骆驼蓬碱的体外溶出参数为指标进行正交试验。

Measured tie a kind of lactone, take the propanol - four hydrogen fu nan - water (1:15:84) as the flowing, take the maidenhair tree lactone, gingko lactone A, gingko lactone B, gingko lactone C as the comparison, with evaporation light scattering detector examination computation.

测萜类内酯，以正丙醇-四氢呋喃-水（1：15：84）为流动相，以白果内酯、银杏内酯A、银杏内酯B、银杏内酯C为对照品，用蒸发光散射检测器检测计算。

Then optimal reaction media were constructed: binary miture of solvents comprising 65% tetrahydrofuran and 35% hexane.

构建了最适的二元反应介质：65%的四氢呋喃和35%的正己烷。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。