有反应

The key problem for limb , skin or other composite tissues transplantation is to control posttransplantation rejection , which encumbers long term functional survival of transplanted organ and tissues .

作为皮肤复合组织移植的受者，术后出现排斥反应的几率很高，排斥反应发生的程度和频率将直接影响移植组织能否长期存活及功能能否及时恢复，而免疫抑制剂的个体化用药是否合理又直接影响术后免疫排斥反应发生的频率和程度，因此为受者&量体裁衣&制定免疫抑制剂术后个体化给药方案，是保证移植组织或器官有功能性的长期存活的关键因素之一。

The research shows that In has activation to Al, making its corrosive potential decrease, and increasing the rate of H2-evolutive simultaneously. The affiliating of Zn leads In and Al to alloying, reducing the rate of H2-evolutive, and passivating aluminum. The adhibiting of Bi helps to activate Al electrode, but gets up the rate of H2-evolutive. The existent of Pb passivates Al anode, restraining the H2-evolutive availably. After compounding these elements, the general performances of complex alloys are advanced by their conjunct functions farther.

结果表明，铟对铝阳极有活化作用，使铝的腐蚀电位发生负移，但同时也会加大析氢副反应的速度；锌的加入促进了铟的合金化，减少富铟偏析相的形成，而且能极大地降低铝阳极的析氢反应速率，使其钝化；铋的引入有助铝阳极活化，但同时又会导致析氢速率的提高；铅的存在使铝阳极钝化，有效地抑制了析氢反应，但加大了阳极极化。

Some prescribes about the test method of alkali aggregate and alkali-aggregate reaction have been shown in the regulations of geologic reconnoitering and the test method of the hydraulic concrete.

中国已建的混凝土大坝中，有些也含有一定量的碱活性骨料，但由于采用了低标号水泥和大量的活性混合材，因此至今未发生碱骨料破坏反应；但也有个别工程，虽经碱骨料反应的检测，并采用了一定的抑制措施，但运行20年后，在大坝溢流面混凝土中出现了碱骨料反应的微观和宏观裂缝破坏。

Since H〓S and SO〓 adsorbed on TiO〓 could react with each other and TiO〓 is the medium of their electron transfer, thus SO〓 could not be adsorbed quite strong on the active site of TiO〓, which makes it more resistant to sulfating and increase the stability of catalyst. Finally, the model and mechanism of the reduction of SO〓 by NH〓 to elemental sulfur is advanced as follows: on the sulfide catalyst, ammonia is decomposed to N〓 and H〓, and H〓 reacts with SO〓 to form the intermedium of H〓S; then H〓S and SO〓 react as Claus reaction on TiO〓 catalyst.

反应系统中过量水蒸气的存在使催化剂表面某些活性位被水蒸气抑制使活性和选择性有较大幅度降低，但这种影响是可逆的，不会造成催化剂永久性中毒；另外当单质硫和水蒸气同时存在时，在〓催化剂上能够生成硫化氢和二氧化硫，而且由于硫化氢和二氧化硫化学吸附能力不同而导致它们的脱附顺序不同，硫化氢的生成温度总是低于二氧化硫的生成温度，说明过量水蒸气的存在会导致氧化物催化剂上逆克劳斯反应的发生；而在硫化物催化剂上几乎没有硫化氢和二氧化硫生成，说明硫化物催化剂能够抑制逆克劳斯反应的发生。

When oxygen is absent, the heat treatment has a negative effect on the activity of the carbon, and the deeper heat treatment results in the lower activity, which is directly relevant to the decrease of the amount of C-OH which plays an important role in the reduction of NO with carbon.

在无氧条件下，活性炭热处理降低了其还原NO的反应活性，且其反应活性随着热处理程度的加深而降低，这与炭表面C-OH数量的减少有直接关系，C-OH在C-NO反应中扮演了重要角色。

There are the non-saturated and carbon -carbon double keys and carboxyl group and special functional group derived from carboxyl group, so it is used in the polymerization and co-polymerization widely, can react with many kinds of the compounds, and produce a series of acrylic acid co-polymerization compound .

丙烯酸及其酯的化学结构中均有不饱和碳碳双键和羧基或羧基衍生的特性功能团，因此可广泛用于均聚反应和共聚反应，能与多种化合物反应，合成一系列丙烯酸共聚物。

Moreover, the kinetics of the esterifieation reaction using ammonium molybdate as catalyst was studied. The result showed that the reaction was chemical reaction controlling. The rate equations were established, and the reaction models gave satisfactory result.

对钼酸铵为催化剂时2，6-NDCA甲酯化反应动力学进行了研究，结果表明，该反应属化学反应控制，根据实验结果，建立了反应的宏观动力学方程式，动力学模型有较好的拟合效果。

In charpter one, the kinetics of Beckmann rearrangement reaction of the production of caprolactam has been studied. We used the hypothermia reaction data cited by the literature, Six kinetic models were proposed based on the possible radical reaction mechanisms and reasonable simplification. By employing the optimization technique, the optimum kinetic model was suggested.

本文利用已有文献报道的低温反应数据，结合重排反应过程的特点和现象，作出合理的建设和简化，推导出6种可能的重排反应机理，利用最优化计算技术，经过模型筛选，确定了最佳的动力学模型。

The computational results indicate that surface catalytic combustion restrains gas phase combustion. Inlet velocity and tube diameters have important influence on catalytic combustion of hydrogen. For smaller inlet velocities,reaction is dominated by gas phase combustion. As the inlet velocity increases,there exist both surface catalytic combustion and gas phase combustion. For bigger inlet velocities,reaction is dominated by surface catalytic combustion. The temperature of flame core decreases with the decrease of tube diameter.

计算结果表明，表面催化反应对空间气相反应有抑制作用；入口速度和管径对氢气的催化燃烧过程有重要的影响，在入口速度较小时，燃烧主要是空间气相化学反应，随着入口速度的增大，燃烧过程同时存在着表面催化反应和空间气相反应两种控制因素，在入口速度较大时，燃烧主要是表面催化燃烧过程；随着管径的减小，微型管道内反应的最高温度降低。

The EAG responses were maximal for the C5-C7 alcohols, and declined as the carbon chain-length of compounds increased or decreased. Aliphatic aldehydes, acetones, acids and esters could also trigger significant EAG responses.

在100μg的刺激剂量下，棉铃虫齿唇姬蜂对C5~C7脂肪醇的EAG反应最强，碳链延长或缩短都将导致反应的降低；对脂肪醛、酮、酸和酯都有一定的反应。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐