尼古丁

Because nicotine is so similar to acetylcholine, and binds to cholinergic receptors, nicotine in excess produces the same overstimulation and toxicity.

绑定到烟碱性的胆碱能受体的尼古丁越多，随后乙酰胆碱就释放的越多，更加自由地激活其他部分的胆碱能受体。

Given the known reaction mechanism and general chemical considerations, we propose that nicotine, when used as the carbon source by P. putida J5, is catabolized to pyruvic acid via pyrrolidine pathway and then participates in the synthesis of vitamin pantothenate and CoA, which supply the energy for the normal functioning.

通过对突变位点基因的功能分析推测，假单胞杆菌可以将尼古丁代谢为2，5-二羟基吡啶，而2，5-二羟基吡啶可以进一步转化为丁烯二酸和丙酮酸，进而参与了泛酸和 CoA 的合成，为生理代谢提供基质。

Abstract〕 Objective: To study the effect of nicotine on dental papilla mesenchymal cells.

摘要〕 目的：探讨尼古丁对牙乳头间充质细胞增殖的可能影响。

And the results of Friedman-test on these two correlation models of Ash,Nicotine,PEE,PEEN were 1.24,1.83,1.67,4.63 respectively,which indica...

两类近红外预测模型对灰分的预测没有显著性区别，而对尼古丁、石油醚提取物、石油醚提取物中性成分的预测有显著性区别。

E-CIGARETTES: Electronics company Ruyan of Beijing, China, has come up with a battery-powered electronic device that delivers nicotine when you puff on it.

电子香烟：中国北京的电子公司Ruyan研制了一种由电池驱动的电子装置，当你吸它会散发尼古丁。

The WHO said people who puff on ecigarettes inhale a fine mist of nicotine in the lungs.

世卫组织称，烟民在吸电子香烟时会将纯雾体尼古丁吸入肺部。

Evidence suggests that each puff on a vaporizer is probably between 1/3 and 2/3 of the nicotine you get from a puff on a cigarette.

有证据表明，每吸一口就蒸发器很可能在1 / 3和2 / 3的尼古丁你从一吹上一支香烟。

By using on-lined pyrolyzer-chiral MDGC/NPD,it was found that,racemization of S--nicotine reagent was highly synchronous to its thermal degradation process.

采用在线裂解-chiral-MDGC/NPD，发现S-尼古丁试剂的消旋化与热裂解进程具有高度的同步性。

To clarify if nitric oxide is involved in the relaxant responses to nerve stimulation by nicotine.

阐明在尼古丁所引起的家犬视网膜动脉舒张反应中所包含的神经源性一氧化氮作用机制。

The role of nicotine smokers breathe in the production of sperm in the seminiferous tubules of spermatogenic epithelium to spermatogenic dysfunction, which produced a decrease in the number of sperm quality lower.

吸烟者吸入尼古丁作用于生产精子的曲细精管的生精上皮，使其生精功能减退，因而生产出来的精子数目减少，质量降低。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。