乙烷

Above the light off temperature, the main products of ethane oxidative dehydrogenation were ethene, carbon monoxide and carbon dioxide.

在负载型杂多酸上进行的乙烷氧化脱氢反应主要产物是乙烯、一氧化碳和二氧化碳。

Advances in the catalysts for synthesis of ethylene glycol ethers via etherification were reviewed, and some suggestion were made for development of new catalysts.

介绍了醚化反应法合成乙二醇醚催化剂的研究进展，并对催化剂的开发提出了建议。在进行环氧乙烷与醇的醚化反应时，使用传统的碱性催化剂，反应容易形成多醚；使用传统的酸性催化剂，反应容易形成有毒物质二烷。

A better understanding of the role of PPAR in insulin action system will be critical in developing more efficacious and safe agent s that act on PPAR and benefit patients with type 2 diabetes. The main content is followed: Synthesis and analysis of 1,3-dicarbonyl compounds. Make use of easily available cheap reagent such as 2-naphthol, 6-hydroxyquinoline, 1,2-dibromoethane, 4- hydroxybenzaldehyde, dimethyl malonate, 2-{4- [(2-napthoxy)ethoxyl] benzyl} malonates and 2-{4 [(1,2,3,4-tetrahydro-6 -quinolinoxy)ethoxyl] benzyl } malonates were synthesized through 6-8 steps in virtue of Williamson, Knoevenagel reaction, Pd/C catalyzed hydrogenation with mild conditions and high yield. The total yield of 40-50%.

本论文的主要内容和研究结果如下： 1，3-二羰基类化合物的合成及分析，采用2-萘酚、6-羟基喹啉、1 ，2二溴乙烷、对羟基苯甲醛、丙二酸二甲酯等常见易得试剂，利用Williamson反应、Knoevenagel反应、钯碳加氢等条件温和且收率高的方法，分别合成了2-{4- [(2-萘氧)乙氧基]苄基}丙二酸衍生物和2-{4 [(1，2，3，4-四氢-6-喹啉氧基)乙氧基]苄基}丙二酸衍生物两个系列8个化合物，经6-8步反应，总收率为40-50%，具有一定绿色化学特性。

According to the Chemical Data Guide,what does ethyl chloride produce when ignited

KEY： C根据化学资料指南，当氯乙烷被点着时会产生什么有毒的光气碳酰氯

Inside the clear crystal capsule, a combination of gas and liquid ethyl chloride expands into the chamber as the temperature rises, which compresses the internal spring.

在这个清晰透明的壳子里，液氯乙烷和气体的混合物在气温上升时进入密闭容器，从而压缩内部的弹簧。

"General anesthesia induces loss of consciousness, most often using hydrocarbon s (e.g., cyclopropane, ethylene); halogenated hydrocarbon s (e.g., chloroform, ethyl chloride, trichloroethylene); ethers (e.g., ethyl ether or vinyl ether);"

全身麻醉药会让人丧失意识，最常用的是烃；卤化氢(如氯仿、氯乙烷、三氯乙烯)；醚如乙醚、乙烯醚

"General anesthesia induce s loss of consciousness, most often using hydrocarbons (e.g., cyclopropane, ethylene); halogenated hydrocarbons (e.g., chloroform, ethyl chloride, trichloroethylene); ethers (e.g., ethyl ether or vinyl ether);"

全身麻醉药会让人丧失意识，最常用的是烃；卤化氢(如氯仿、氯乙烷、三氯乙烯)；醚如乙醚、乙烯醚

"General anesthesia induces loss of consciousness, most often using hydrocarbons (e.g., cyclopropane, ethylene); halogenated hydrocarbons (e.g., chloroform, ethyl chloride, trichloroethylene); ethers (e.g., ethyl ether or vinyl ether);"

全身麻醉药会让人丧失意识，最常用的是烃；卤化氢(如氯仿、氯乙烷、三氯乙烯)；醚如乙醚、乙烯醚

"General anesthesia induces loss of consciousness, most often using hydrocarbons (e.g., cyclopropane, ethylene); halogen ated hydrocarbons (e.g., chloroform, ethyl chloride, trichloroethylene); ethers (e.g., ethyl ether or vinyl ether);"

全身麻醉药会让人丧失意识，最常用的是烃；卤化氢(如氯仿、氯乙烷、三氯乙烯)；醚如乙醚、乙烯醚

ABSTRACT OBJECTIVE:To established a method for the determination of ethylene oxide in metronidazole.

目的：建立甲硝唑中残留环氧乙烷的测定方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。