二戊烯

Based on GC and GC-MS analyses, the geochemical characteristics of these typical deep viscous oils are listed as follows:(1) strong preference of even n-alkanes over odd n-alkanes;(2) strong preference of phytane over pristane, i. e. Pr/Ph ratio＜＜1;(3) high abundance of gammacerane relative to C〓hopanes;(4) much more amounts of C〓 pentakishomohopanes than C〓 tetrakishomohopanes and even C〓 trishomohopanes.

罗家—垦西地区稠油饱和烃色谱、色谱-质谱分析结果展示：(1)正构烷烃具有明显的偶奇优势；(2)类异戊二烯烷烃具有较强的植烷优势，姥姣烷/植烷比值远小于1；(3)伽玛蜡烷相对含量(相对于C30藿烷)普遍很高；(4)C35升藿烷明显高于C34、甚至C33升藿烷；表现出膏盐湖相生物标志物的组成特征。

The effects of reaction temperature, phase transfer agent and the concentration of rhodium catalyst were examined.

研究了采用水溶性铑膦络合催化体系对双环戊二烯的氢甲酰化反应，考查了反应温度、相转移剂CTAB、铑催化剂浓度等对反应的影响。

Cholesterol contributes to the generation and development of atherosclerosis while non sterol isoprenoids play a role in regulation of cell proliferation, signal transduction and ge...

胆固醇在动脉粥样硬化的发生、发展中起重要作用，而异戊二烯则参与细胞增殖调节、信号转导及肿瘤发生过程。目前，该酶已成为一些有效的抗动脉粥样硬化药物治疗的靶点。

The effect of liquid isoprene rubber on properties of NR/BR compound,physical properties and thermal air aging property of its vulcanizate was investigated and compared to that of aromatic oil.

以液体聚异戊二烯橡胶为反应型增塑剂，研究LIR对NR/BR混炼胶性能、硫化胶物理性能和耐热空气老化性能的影响，并与添加芳烃油的NR/BR并用胶进行对比。

In this study, collagen connected titanium plates were evaluated in vitro. The titanium plates were treated by glow discharge with allylamine.

钛金属表面先以丙烯胺电浆处理，使附著上胺基(-NH2)，再分别以不同浓度的交链剂BS3及戊二醛连接固定第一型胶原蛋白。

The deposition thickness of allylamine was increased with the treating time. The surface textures were changed following different procedures except allylamine groups and it means that the 30 min deposition thickness of allylamine is too thin to change the surface contours.

SEM-EDS的结果显示在未经任何处理及经氩气电浆清洁后的钛金属表面，侦测到主要为钛元素，丙烯胺电浆处理后，即可测到氮元素；戊二醛作用后表面有氧元素的出现；白蛋白处理后即可测得碳及氧元素。

Otherwise, an intermediary allylamine deposition was covalently linked to the oxide layer by glow discharge, the covalent binding of bioactive protein to the free terminal NH2 groups using glutaraldehyde as a coupling agent was followed.

并利用丙烯胺的电浆处理在钛金属表面键结上胺基(-NH2)的官能基，之后再以交链剂戊二醛来固定生物活性胶原蛋白於低温电浆处理后的钛金属表面。

With a little judicious searching, Amyris thinks it has come up with isoprenoids that have the right characteristics to substitute for petrol.

阿米瑞斯公司认为，只要通过一番去伪存真，就会得到能够取代汽油的类异戊二烯。

The main results and conclusions are as follows:The trans-1,4 content of polybutadiene increased from 50%to 89%along with the increasing of Al/Li ratio;the trans-1,4 content of polyisoprene increased from 24%to 46%as well as 3,4 content along with the increasing of Al/Li ratio;the microstructure of polystyrene was invariable and atactic.

主要研究结果及结论如下：随着Al/Li的增加，聚丁二烯的反式结构含量从50%增加到89%；聚异戊二烯的反式-1，4-结构含量从24%增加到46%，并且其3，4结构含量也有所增加；聚苯乙烯的微观结构基本没有变化，为无规聚苯乙烯。

The main results and conclusions are as follows:The trans-1,4 content of polybutadiene increased from 50%to 89%along with the increasing of Al/Li ratio;the trans-1,4 content of polyisoprene increased from 24%to 46%as well as 3,4 content along with the increasing of Al/Li ratio;the microstructure of polystyrene was invariable and atactic.

加热器主要研究结果及结论如下：随着Al/L i的增加，聚丁二烯的反式结构含量从50%增加到89%；聚异戊二烯的反式-1，4-结构含量从24%增加到46%，并且其3，4结构含量也有所增加；聚苯乙烯的微观结构基本没有变化，为无规聚苯乙烯。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。