离

The dissociation constants p K HL1 is in the range of 3\^50 to 4.89, p K HL2 6.17 to 8.38, K HL1 / K HL2 is below 10 5, which is consistant with the results of potentiometric titration curve. The Cu 2+ complexation constant,is 1.346 for old manured loessal soil and 2.241 for dark cultivated loessal soil.A good optimization result is given by nonelectrostatic model.

胡敏酸的解离常数和Cu2+的络合常数应用计算机程序FTTEQL32表明，优化的解离常数pKHL1在3.50-4.89之间，pKHL2在6.17-8.38之间，2种形态一元胡敏酸解离常数之比小于105，与滴定曲线只有一个突跃区相一致2种土壤胡敏酸与Cu2+络合常数logKintACu大小分别为土HA1.346，黑垆土HA 2.241，非静电模式的优化结果较好。

Based on the hypothesis of Brands, this thesis presents two off-line electronic cash system applied to small payment: one is an off-line nondivisible electronic cash system with complete anonymity, and the other is an off-line nondivisible electronic cashsystem with repealed anonymity. The two systems can solve the bottleneck problem of bank server. Furthermore, based on the concept of virtual debit as well as the payment demand of pay-per-use electronic commerce and mobile commerce, this paper designs a micro-system NPAY, which can solve the problem of extra-consuming, greatly reduce the system communication overhead, and the consumer can anonymously consume.

基于Brands假设，设计了两个适用于小额支付的离线电子现金系统：一个是具有完全匿名性的离线不可分电子现金系统，另一个是可撤消匿名性的离线不可分电子现金系统，这两个系统都较好地解决了银行服务器的瓶颈问题；针对即付即用(pay-per-use)类型电子商务和移动商务的支付需求，基于&虚借记&的概念，设计了一个微支付系统NPAY，较好地解决了消费者超额消费问题，系统的通讯开销也大大减少，并且消费者可以匿名消费。

Based on the hypothesis of Brands, this thesis presents two off-line electronic cash system applied to small payment: one is an off-line nondivisible electronic cash system with complete anonymity, and the other is an off-line nondivisible electronic cash'system with repealed anonymity. The two systems can solve the bottleneck problem of bank server. Furthermore, based on the concept of virtual debit as well as the payment demand of pay-per-use electronic commerce and mobile co mmerce, this paper designs a micro-system NPAY, which can solve the problem of extra-consuming, greatly reduce the system communication overhead, and the consumer can anonymously consume.

基于Brands假设，设计了两个适用于小额支付的离线电子现金系统：一个是具有完全匿名性的离线不可分电子现金系统，另一个是可撤消匿名性的离线不可分电子现金系统，这两个系统都较好地解决了银行服务器的瓶颈问题；针对即付即用(pay-per-use)类型电子商务和移动商务的支付需求，基于&虚借记&的概念，设计了一个微支付系统NPAY，较好地解决了消费者超额消费问题，系统的通讯开销也大大减少，并且消费者可以匿名消费。

The results show that rising of groundwater levels after water transportation plays an important role in the decreasing in the crown loss of Populus euphratica, and the crown loss of Populus euphratica gradually increases with increasing distance from the river course. The trees crown loss was less than 10%, which mainly was distributed within 100 metres to each side from the river course. The proportion of crown loss of overmature and effete forests were 50%-75% within 200 to 400 metres.

应急生态输水后地下水位的抬升对胡杨树冠疏失度的降低产生一定的作用；总体上，胡杨的树冠疏失度随着离河道距离的增加逐步增大，而且离河道越远，疏失度增加的程度就越大；树冠疏失度小于10%的旺盛胡杨主要分布在离河道100m之内，其中多以疏失度少于50%的长势较好的胡杨为主。

The fresh weight and basal diameter of the cut curcuma flowers decreased with time after harvested without inserted them into water immediately. Thus, the vase life decreased. The even of the off-water time is only 30 minutes. One gram of fresh flower can absorb 30-40mg of fresh water, and the vase life increased 2-4 days if the stem base were recut, The curcuma flower per se after carting didn't posses peak of respiration and release of ethylene as well.

姜荷花切花采收后随著离水时问增长，鲜重与花茎基部直径渐减，瓶插寿命亦随之缩短，离水仅0.5小时切花即明显受要影响，花茎基部重新切除可增加10-20mg/gF.W的吸水量，而延长瓶插寿命，但同样随著离水时间延长而降低瓶插寿命。

H-acid has two sulphonic groups, which can be dissociated in aquatic solutions. At pH 2.5, only one of them dissociated.

H-酸萘环上含有的两个磺酸基团，在水溶液中可以解离一个或者两个。pH2.5条件下，主要有一个磺酸基团解离，此时，H-酸通过一个磺酸基团吸附在TiO2表面，占位小，饱和吸附量大，但吸附键较弱，吸附较可逆。pH5.0条件下，主要有两个磺酸基团解离，此时，H-酸通过两个磺酸基团吸附在TiO2表面，占位大。

Methods Fifteen rabbits were divided into three groups: group A (posterior limbs was completely cut off and posterior tibia artery was ligated with posterior tibia vein), group B (posterior limb was uncompletely cut off and posterior tibia artery was ligated with posterior tibia vein), group C posterior limb was completely cut off and traditional operation type was applied to ligate the posterior tibia artery with posterior tibia artery (control group.

用15只兔分3组：A组为完全离断小腿胫后动脉缝接胫后静脉组，B组为部分离断小腿胫后动脉缝接胫后静脉组，C组为完全离断小腿应用传统的胫后动脉缝接胫后动脉对照组，3组均结扎胫前动脉，保留胫前静脉等未动脉化的静脉及缝接其它离断软组织。

Because the CMYK color business card printing and making basic membership card is based on the dot to overprint colouration and instead use spot color is basic to business card printing and membership card production, although typically spot color is only partial use of the image, but valuation, it is conventional to general printing inks price to estimate; in addition, if the same suites have four business card printing and membership card making color, cards and membership cards for the purpose of making is tantamount to another color, if the business card printing and membership card making machines have no spare business card printing and membership card production unit (for example, less than four color business card printing and membership card making machine or four-colour business card printing and membership card making machine), you have to spend double the amount of real time business card printing and membership card production cost is higher.

因为CMYK四色制卡和会员卡制息根基因此网不背叠印呈色，而搁置专色则根基以实不天制卡和会员卡制息，尽管凡是专色只是在图像的部分搁置，但估价时，不惯上却因此凡是印墨的两倍代价来估算的；此外，如果同版背还来有了四个制卡和会员卡制息色，差制卡和会员卡制息而言不离即是众了一个颜色，如果制卡和会员卡制息机操纵众余的制卡和会员卡制息单位（如超出四色的制卡和会员卡制息机或四色制卡和会员卡制息机），不离又给众花一倍的工夫来制卡和会员卡制息，不败本也不离更高了。

In order to investigate whether the lysine 188 residue in the XRCC4 is chemically modified by the enzyme SIRT2 or not, I apply site-directed mutagenesis to alter this lysine to either arginine or glutamine, which mimicking the non-acetylating or fully acetylating of lysine residue.

为探讨具酵素功能之SIRT2是否对於XRCC4 188位置之离胺酸进行化学修饰作用，利用定位突变方式分别将该离胺酸置换成麸醯胺或精胺酸，试图模仿XRCC4离胺酸188乙醯化与去乙醯化，是否造成其对SIRT2之亲和力之改变。

Finally making enterprises manage better.Because of insufficients in the traditional cluster method ,such as unusual number avulses of data, and kinds of level count difficult to define. The thesis has put forward a method of Restricted Minimum Variance Hierarchical Cluster. Its basic thoughts come from variance analysis .

针对数据中的异常数值，以及类水平数难以确定的问题本论文提出了一种带约束的最小离差系统聚类法(Restricted Minimum Variance Hierarchical Cluster，RMVHC)，其基本思想来自方差分析，即如果分类正确，则类内样品的离差平方和应较小，而不同类间样品的离差平方和应较大。

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。