反应作用

The maximal reaction rate of pyrotechnical reagent with potassium perchlorate added with Fe2O3 by crystallization method is 8.10 min-1, which is 4.09 times of that without catalyst. The time to maximal rate is 8.52 min, which is lower than that without catalyst by 92.8%. It was also found that CuO can catalyze pyrotechnical reagent with potassium nitrate, and the addition is better with mixing method.

结果表明，氧化铁对含高氯酸钾的烟火药剂具有催化作用，以结晶添加法催化效果最佳；此药剂的最大反应速率为8.10 min-1，是不含催化剂药剂的4.09倍；到达最大反应速率时间为8.52 min，比不含催化剂的药剂降低了92.8%。

Hydrothermal reactions makes water a Bronsted base-acid and act as an effective catalyst and the metal ions represent Lewis base character. The conversion process occurs in a very complex network of parallel, consecutive and equilibrium reactions, and the last step being the catalyzed Cannizzaro-type reaction of pyruvaldehyde to lactic acid.

nsted酸碱并具有一定的催化作用，金属离子在水热催化降解丙酮醛生成乳酸中表现出Lewis碱的特性，能与丙酮醛生成金属复合物，最终生成乳酸，此反应过程符合Cannizzaro反应特性。

Shed blood reinfusion alone did not restore the decreased vascular reactivity. ICI174,864 improved the decreased vascular reactivity in dose-dependent manner.

单纯回输失血不能纠正血管的低反应性，ICI174，864对休克血管的低反应性有不同程度的恢复作用，且呈一定的剂量依赖关系。

The experimental results showed that the activity of Candida rugosa lipase in the AOT microemulsions system had a typical bell-shaped dependence on the ion concentration.

结果表明，所研究的碱金属、碱土金属氯化盐对该酶反应有作用，具有类似钟形的曲线；稀土离子对该酶催化反应也存在类似影响。

Aging mechanism of wood-plastic composite was: light and heat break down the long molecular chains of wood flour and plastic; the free radicals reacted with the oxygen, which generated carbonyl groups, hydroperoxides and so on; the free radicals also had cross linking reaction, which generated alkoxy; Water destroyed the interface of wood flour and plastic, hydrolyzed ester additives, extracted the small molecule additives and degradation products; Microorganism degraded cellulose, semicellulose, lignin and ester additives; degradation product from different component accelerated the aging, which could be exampled by the fact that HCl from degradation of PVC accelerated the hydrolyzation of cellulose and semicellulose.

木塑复合材料的老化机理为：光和热引发木塑复合材料中木质组分和塑料组分大分子链断裂，产生的自由基与氧气作用，发生链支化反应生成羰基、氢过氧化物等，发生交联反应生成烷氧基等；水分破坏木-塑界面、水解酯类添加剂、抽提小分子添加剂和降解产物；微生物分解纤维素、半纤维素、木素和酯类添加剂；木塑复合材料中各组分的降解产物相互促进老化，PVC降解产生的HCl溶于水，促进了纤维素和半纤维素的水解。

Continuous determination of a polymer chain end group(initiating and chain growth species) at various times by electrospray ionization mass spectrometry indicates that the sterically hindered strong organic base predominately plays an initiator of polymer-chain growth in the copolymerization process.

利用飞行时间质谱对聚合物链端进行了跟踪检测，直接观察到了聚合反应的引发及链增长过程，证明大位阻有机碱在共聚反应过程中对聚合物的链增长起着重要的引发作用。

Some key problems whether the height and diameter of the reactor chamber can be further increased,how to optimize the temperature and concentration fields above the susceptor,etc.are explored.

模拟结果发现：(1)通过对反应器形状进行优化，使进口处流道趋向于流线的形状，可以大大地削弱甚至消除由流道扩张引起的涡旋；(2)在影响对流涡旋的几何参数中，反应腔高度起主要作用，而反应腔直径影响较小。

On the basis of the above studies, the effects and mechanisms of microinjection of glucocorticoid or mineralocorticoid into the rVLM on the arterial blood pressure, HR, pressor and tachycardiac responses produced by stimulation of the dorsal periaquaductal gray in the midbrain were further observed and analysed in the acute experiments on normotensive rats.

在此基础上，进一步在急性动物实验中观察分析肾上腺糖、盐皮质激素在rVLM区对血压、心率、电刺激防御反应区诱发的防御性升压和加快心率反应的作用及其机制。

Microinjection of glucocorticoid or mineralocorticoid (40 or 10 ng/0.1 ul/site) into the rVLM bilaterally caused an increase in BP, HR and the pressor response induced by the dPAG stimulation in the normotensive rat, respectively. Dose-dependence of both drugs was observed on the above effects in three directions. Nevertheless, there was no effect of both drugs on the tachycardiac response induced by the dPAG stimulation.

二、分别微量注射糖、盐皮质激素(40或10ng/0.1μl/site)至双侧rVLM，可引起正常血压大鼠的BP升高，HR加快，以及电刺激中脑中央周围灰质背侧区诱发的防御性升压反应增强，并均呈现出剂量-效应依赖性关系，而对电刺激dPAG诱发的加快心率反应无明显改变作用。

After microinjection of the antagonists of glucocorticoid RU 38486 or mineralocorticoid spironolactone (40 ng/0.1 ul/site, respectively) into the rVLM bilaterally, a decrease in BP, HR and the pressor response induced by the dPAG stimulation was observed in the normotensive rat, and there was no change on the tachycardiac response induced by the dPAG stimulation.

分别微量注射糖、盐皮质激素的拮抗剂RU 38486(40ng/0.1μl/site)或螺旋内酯(40ng/0.1μl/site)至双侧rVLM，则引起正常血压大鼠的BP下降、HR减慢，以及电刺激dPAG诱发的防御性升压反应减弱，对电刺激dPAG诱发的加快心率反应无明显改变作用。

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。