可保持的

The much larger areas with significant but not total modification, such as rural residential, broadacre pastoral and logged native forests are also continuing to expand, and to encroach on the least-modified areas.

关于可持续能力和关乎人类生存的任何长期策略唯一最重要的组分，能够使世界各种各样的生态系统的代表性区域保持在一个合理的原封不动的和功能的状态。

Most people who have been suddenly put out to pasture tend to panic,when,in fact,they really should be maintaining their poise and sorting out their options.the interesting thing about career panic is how many ways it manifests itself.panic isn't just the sweaty－browed terror of searching for the next job.it can also be a failure to say "no" to a job that's wrong for you,a failure to consider all your options,or a failure simply to put the unpleasant memories of your old employer behind you.

多数被突然解职的人容易惊惶失措，而实际上他们应该保持镇静，选择出路。有意思的是，事业上的恐慌可在多方面表现出来。恐慌不仅仅是头上冒汗，心里害怕，急着再找一份工作。它也使你面对一份不适合你的工作说不出&不&字，忘记考虑所有其他的选择，也不能把关于从前雇主的种种不愉快的记忆从你脑海里抹去。

This thesis explains basic financial innovation theorems including "circumventive innovation theorem","transaction cost innovation theorem" and " value chain theory ", etc and the relationship between these theorems and Internet banking; on the basis of analyzing the developing history and current situation of Internet banking business in foreign countries and in china, it points out the major problems existing in our Internet banking innovation, summarizes the experiences in foreign Internet banking which can be referential to our commercial banks, and gets to the conclusion that meeting customer's demands and keeping, maintaining, utilizing the customer relationship effectively are the key points in Internet banking innovation.

阐释了&规避管制理论&、&交易成本理论&、&价值链理论&等金融创新理论的基本内容及其与网络银行业务创新的关系；通过对国内外网络银行业务功能发展历程的简要回顾和对其业务创新现状的介绍，总结了国外发展网络银行业务过程中可供我国商业银行借鉴的经验，探讨了我国网络银行业务创新存在的主要问题，并认为满足客户需求，保持、维护并有效利用银行与客户间的关系是进行网络银行业务创新的关键所在。

It was found that increasing pressure for blank can improve the compactedness of blanks so as to make foam aluminium materials with homogeneous pores. Foaming temperature, as one of the main influencing factors on foaming process, should be controlled higher than the melting point of Al or Alalloy to a certain extant in order to keep a reasonable viscosity. Thus, the foam aluminum with homogeneous pores and high porosity is available. As shown by experiments, such materials should be made on conditions that they shall be protected with molten salt under 300?MPa pressure at 675～680?℃.

研究了粉末冶金法制备泡沫铝材料的方法讨论了发泡过程中的保护方式、制坯压力、发泡温度等参数对泡沫铝体积质量、孔隙率、孔结构的影响，并对发泡机理进行了探讨增大制坯压力使得金属坯致密，可以得到孔结构均匀的泡沫铝材料；发泡温度是影响发泡的主要因素之一，发泡温度控制在高于铝或铝合金熔点，同时保持熔体具有一定粘度的范围内，能够得到孔结构均匀、高孔隙率的泡沫铝材料实验结果表明：采用熔盐保护方式，在300MPa的压力下，温度在675～680℃时，可得到孔径均匀、孔隙率高的泡沫铝材料。

The chemical activating mechanism of UA is that CG can stimulate pozzolanicity more effective than gypsum because of higher solubility and looser crystal structure; but CG has poor property on retardation setting, and this shortage can be solved by mixing with gypsum; CS can offer alkali activity, which can depolymerize silica and aluminum glass, and benefit for other activity methods and overcome the disadvantage of HF on setting time; Sodium sulfate improves early strength greatly but loses the final strength. NF can improve both early and final strengths.

联合激发技术的化学激发机理是，煅烧石膏溶解度高及晶体结构松弛，比天然石膏的活性激发效率高，但降低石膏的缓凝作用，与天然石膏混合既可提高活性又能保持缓凝作用；干法电石渣提供碱激发，促进高钙灰中硅、铝玻璃体解聚，并克服高钙灰对凝结时间的不利影响；硫酸钠虽然早强作用明显，但使后期强度倒缩，NF使各龄期活性都得到提高；磨细的物理激发使高钙灰大颗粒中的CaO和富集碳组分被磨细、分散，活性增加而危害性降低。

This work, concentrated on the asymmetric allylation of aldehydes controlled by different chiral auxiliaries prepared from rotational pure tartaric acid, can be divided into three parts.The first part aims to review the developments of chiral drugs and asymmetric synthesis, from which derived the present research topic backgrounds and works.Synthesis and applications of allylation from aldehydes are the second part of the thesis. By optimizing the reaction conditions, such as solvents, temperature, time and chiral auxiliaries like N,N\'-dibenzyl tartamide, N,N\'-p-dimethylphenyl tartamide, N,N\'-o-dimethylphenyl tartamide, N,N\'-o-dichlorophenyl tartamide, N,N\'-a-dinaphyl tartamide, N,N\'-dicyclohexyl tartamide and N,N\'-diphenyl tartamide, ideal experimenttal conditions are obtained according to HPLC monitoring, as well as the auxiliaries\' recoveries experiments. Starting from benzaldehyde and 3-bromopropaldehyde, N,N\'-dibenzyl tartamide is considered the best auxiliary in this reaction.

本文介绍了醛的不对称烯丙基化反应，以光学纯酒石酸为原料，研究了不同构型手性配体在醛的烯丙基化反应中的立体选择性，全文共分三部分十个章节：第一部分对当前手性药物和手性技术进行了概述，并由此展开了本文的研究背景和任务；第二部分为有机合成部分，对醛的不对称烯丙基化反应进行了深入探讨，以苯甲醛为原料对反应条件进行优化，在优化的反应条件下对制备的七种可回收手性酰胺配体(N-苄基酒石酸二酰胺、N-对甲苯基酒石酸二酰胺、N-邻甲苯基酒石酸二酰胺、N-邻氯苯基酒石酸二酰胺、N-a-萘基酒石酸二酰胺、N-环己基酒石酸二酰胺和N-苯基酒石酸二酰胺)进行筛选，优化配体回收实验条件，最终确定出N-苄基酒石酸二酰胺在苯甲醛的不对称烯丙基化反应中具有较大优越性，结晶回收的手性配体光学纯度保持不变。

The results show that La can refine the microstructure of Zn-22%Al alloy, slow down the grain growth and reduce the equiaxial degree during ageing, that the strength of Zn-22%Al-alloys and Zn-22%Al alloy remains constant after ageing below the warm-rolling temperature, and that La can improve the strength and the stability of mechanical properties of Zn-22%Al alloy.

结果表明：La具有细化Zn-22%Al合金的组织并阻碍时效时晶粒长大和等轴程度降低的作用；在低于温轧温度(80 ℃)下时效时，加La和不加La的Zn-22%Al合金的室温力学性能保持不变； La可提高Zn-22%Al合金的强度以及时效时力学性能的稳定性。

This project is designed for the proper condition of the villages and towns , used to eliminate the sewage of living , waste water of production and the excrescent surface water. It can reduced spread of pathogen and environment pollution , in order to keep sanitation of the habitation.

项目简介：该项目是针对农村乡镇特有的生产和生活环境所设计，用于排除农村乡镇居民生活污水和生产中的各种废水、多余的地面水的工程，可有效减少病菌传播和对环境的污染，以保持生活环境的卫生。

Histological observation showed no vital osteocytes were found in bone lacuna and vessels perforating into Haversian canals disappeared in control group after operation.

细胞和矿化的细胞间质组成的骨组织有其独特的生物组织学特性，为人体最坚硬的结缔组织，即使其细胞成分全部坏死，仍可在一定的时期内保持其组织学结构形态，且仍具有一定的生物力学功能。

Under the influence of the sunlight and with the help of its strong oxidization capacity, the photo-catalyst can oxidize nearly all the organic matters on the surface into H 2 O and the corresponding nontoxic inorganic materials. At the same time, under the combined actions of the characteristic nanometer structure of its surface, the hydroscopic properties of the complex additives and the light-induced amphiphilic properties (hydrophilicity and lipophilicity) of Ti02 itself the surface of the glass is made superhydrophilic, so that it becomes easily washable, anti-fog and not vulnerable to recontamination to keep the glass clean and transparent. And it also has such functions as sanitization, sterilization, foreign odor elimination and air refreshing.

在阳光的作用下，光催化剂以其特有的强氧化能力，可将其表面的几乎所有有机物完全氧化为H 20及相应的无害无机物，同时在其表面特有的纳米结构、复合添加剂的吸水性和Ti02本身的光致两亲性的共同作用下使玻璃表面具有超亲水性，变得易清洗、防雾和不易被再污染而保持洁净透明，同时具有消毒、杀菌、消除异味、清新空气等功能。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。