丙烷

We also discussed this unusual reaction process and proposed a reasonable "one method,two paths" mechanism.These novel iodine-mediated oxidative cycloadditions provide a rapid and efficient route to the preparation of a variety of spiro dihydrofuran and cyclopropane derivatives.

该反应不使用昂贵的催化剂；反应过程中不使用有毒有害的有机溶剂，对环境友好；反应时间短，收率高；在相同条件下得到不同结构的产物，这提供了一种新型的合成二氢呋喃和环丙烷结构的环化反应。

The easy recovery of chiral auxiliary, good selectivity and high yield of this reaction make it a potential method in the synthesis of multifunctional optically active cyclopropane derivatives.

手性硫叶立德控制的高对映选择性合成多取代烯基环丙烷衍生物。

Two framework have been investigated carefully and presented in this thesis. The 18O(1D) reaction with cyclopropane has been investigated using the eletron impact ionization based universal crossed molecular beam techniques.

在环丙烷与单重态氧原子反应的实验中，反应产物经由飞行时间谱的测量，至少有四个反应通道被发现，分别是氢原子形成，氢分子( H2)形成，乙烯( C2H4)形成以及氢氧基形成的过程。

The oxidation reaction, the addition of nucleophiles to C-C multiple bonds, cyclization of enynes and cyclopropane compounds catalyzed by gold were intrduced.

第二章：介绍了环丙烷亲核开环反应，总结了以往亲核开环反应的优缺点。

RESULTS: Blockade of D2 dopamine-mediated transmission withdroperidol does not decrease the MAC of cyclopropane, desflurane,halothane, isoflurane, or sevoflurane or its equivalent foretomidate in rats.

结果：多巴胺 D2受体阻滞剂氟哌利多（剂量为0.3 mg/kg 或 3.0 mg/kg ）对鼠吸入环丙烷、地氟烷、氟烷、异氟烷或七氟醚或等剂量的依托咪酯的 MAC 并没有减少作用。

A classic example of age-related reduced anesthetic requirement is the reduced minimum alveolar concentration necessary in elderly patients to produce anesthesia with either cyclopropane, halothane, isoflurane or desflurane.2 The requirement for these inhalational agents decreases linearly with patient age.

年龄相关性麻醉剂需要量减少，经典的例子是所使用的环丙烷、氟烷、异氟烷、地氟烷的 MAC 减少。这些麻醉剂需要量随年龄呈线性减少。

If, relative to isoflurane, cyclopropane minimally increases GABA-induced chloride currents at any GABAA receptor subtype, the present data for MAC are consistent with the notion that GABAA receptors do not mediate the immobility produced by inhaled anesthetics.

如果，相对於异氟烷而言，环丙烷在任何γ-氨基丁酸 A 受体的亚体上都是极微弱地增加γ-氨基丁酸介导氯电子流的作用，那麼现在关於 MAC 的资料就和γ-氨基丁酸 A 受体不是吸入性麻醉药产生的抑制作用的介导者这一概念一致。

The cationic diamide softener can be emulsified by emulsifying agent, and the emulsion of cationic diamide softene can be used as softening agent in Papermaking. The results showed that the emulsion of the cationic diamide softener is stable and homogeneous when the dosage of emulsifying agent cetyltrimethylammonium chloride is 10% in the emulsifying process.

摘 要：以硬脂酸和二乙烯三胺经酰化反应制得二硬脂酰化物，用环氧氯丙烷阳离子化后，再加入乳化剂乳化，可制得带有反应性基团环氧基的新型双酰胺阳离子乳液型纸张柔软剂。

The cis novel bisoxazoline ligands L1-L4 have been synthesized through the treatment of new cis dihydroxy diamide with p-toluenesulfonyl chloride in the presence of catalytic quantity of 4--pyridine, and the cis dihydroxy diamide could be achieved from the condensation of the amino alcohols and cis cyclopropane dicarbonyl chloride prepared via oxidation and halogenation from cis-2,2-dimethyl-3-formylcyclopropanecarboxylate with DCC.

我们以蒈醛酸内酯为起始原料，经过氧化反应、酰氯化反应得到顺式环丙烷二酰氯，然后在二环己基碳二亚胺的催化下与相应的氨基醇反应合成了顺式二羟基酰胺，再用对甲苯磺酰氯将羟基活化，最后在二甲氨基吡啶的催化下关环合成顺式双噁唑啉配体L1～L4。

The measurements of self-diffusion coefficient,spin-spin relaxation and interproton distance at 318 K suggest that N,N′-bis-α,ω- alkane propane diammonium dibromide (16-3-16) quasi-global micelles are formed in the dilute solution at a concentration of 0.26 mmol/L and the head groups are in a saw-toothed form staying at the surface of the micelle to overcome the strong electrostatic repulsion force.

从自扩散系数、横向弛豫和质子距离等NMR测定参数推测，在浓度为0.26 mmol/L（318 K）的N，N′-双-α，ω-丙烷溴化铵(16-3-16)溶液中形成了近似球形的胶束，胶束表面的带正电荷的铵基极性头呈锯齿状排列以减弱分子间静电排斥力的影响。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷