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By the end of World War II, Bermuda was ransacked by housing developers, exotic pests, and a native flora wrecked by imported garden species. The residents of Bermuda and the world's scientific community were stunned, then, in 1951 by the announcement that the cahow -- a gull-size seabird -- had been rediscovered on the outer cliffs of the island archipelago.

第二次世界大战结束时，住房开发商、外来害虫彻底侵占了百慕大群岛，当地植物被进口的花园物种所毁灭。1951年，该群岛外岛的悬崖上发现了百慕大圆尾鹱——一种海鸥大小的海鸟——这通告令当地居民和全球科学界极为震惊。

By the end of World War II, Bermuda was ransacked by housing developers, exotic pests, and a native flora wrecked by imported garden species. The residents of Bermuda and the world's scientific community were stunned, then, in 1951 by the announcement that the cahow -- a gull-size seabird -- had been rediscovered on the outer cliffs of the island archipelago. The cahow was thought to be extinct for centuries.

第二次世界大战结束时，住房开发商、外来害虫彻底侵占了百慕大群岛，当地植物被进口的花园物种所毁灭。1951年，在该群岛外岛的悬崖上发现了百慕大圆尾鹱——一种海鸥大小的海鸟——这一通告令当地居民和全球科学界极为震惊，因为人们认为百慕大圆尾鹱已经灭绝几个世纪了。

Its operating principle is that electric energy is changed into mechanical energy by drive unit, then the liquid in the cylinder body forms high and low pressure to drive piston up by impeller circumrotation, so vertical motion is changed into wagging of brake arm by leverage and declutch is completed. This product has passed the experiment test by National Quality Supervise Administration and every technical criterion is accorded with national trade standard.

电力液压块式制动器包括电力液压推动器和块式制动架两部分组成，其工作原理是通过驱动装置的电能变成机械能，通过叶轮旋转，使缸体内液形成高低压腔推动活塞向上运动，从而通过杠杆机构将垂直运动转变成制动臂的左右摆动、完成松闸。

Then the combinant plasmid was conducted into ACC-2 cell by electroporation. ACC-2 cells stably expressing CD was obtained by 10-day positive selection with 400 μg/mL G418. Total RNA was extracted and the expression of the CD gene in transfected ACC-2 cells was identified by RT-PCR. RESULTS: PCR yielded a fragment of l280bp and CD was verified by sequence analysis.

测序正确后，将其亚克隆到质粒表达载体pIRES中，构建以内部核糖体进入位点相连的CD基因的质粒表达载体pIRES-CD，采用电穿孔法，以质粒表达载体转染ACC-2细胞，用400μg/mL的G418筛选10d，获得稳定表达CD基因的ACC-2细胞系，提取该细胞的总RNA，用RT-PCR检测CD基因的表达。

Methods The SPF mice were treated with MED or optimized MED in dose of 29.3 g/kg and 18.6 g/kg per day respectively by intragastric administration for five days continuously. And then, the various dysmnesia mouse models were prepared respectively with Scopolamine (3 mg/kg), Cycloheximide (120 mg/kg) by intraperitoneal injection and 40% alcohol (0.1 mL/10 g body weight) by intrag astric administration on the sixth day. Next day, memory result was estimated by using Step-down Test and Dark-avoiding Test after the mice were administered for half or an hour.

将强记汤及天然脑活素分别以 29.3 g/kg和 18.6 g/kg 的量每日经口灌胃给予 SPF 级小鼠，连续 5 d，第 6 天给药 1 h 后制备成记忆障碍模型，第 7 天给药 0.5~1 h 后分别用跳台法和避暗法测试记忆成绩；另用不同剂量（50 g/mL 和 150 g/mL）天然脑活素水煎液处理大鼠大脑 B104 CNS 神经细胞，以荧光素酶方法检测 CREB 表达水平。

The synthesized PCU was then characterized by infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, small-angle X-ray scattering, and tensile strength measurement. The IR showed that the polymer synthesized by the above two methods both have the polycarbonate-urethane structure and the tensile measurement showed good mechanical performance of the polymer. The DSC and TGA data showed that there is an obvious soft-hard glass transition area, which indicated the existence of the micro-phase separation structure. The extent of the phase separation was affected by the ratio of starting materials, the molecular weight of PCD, and the polymerization method. The decomposition upon heating was observed in two steps. SAXS result showed that the radius (r_2), the distance between domains (d_2), and gyral radius (R_2) of hard segment micro-domain were fairly affected by the starting materials ratio and soft segment content.

IR结果表明两种方法合成的聚合产物均具有聚碳酸酯聚氨酯的结构；拉伸实验表明聚合产物具有良好的力学性能；DSC、TG结果表明，聚合物呈现出较为明显的软硬段玻璃化转变区，表明存在微相分离的结构，相分离的程度受原料配比、软段分子量、聚合方法的影响，其热分解分为明显的两个阶段； SAXS结果表明，聚合物原料配比、软段含量的变化对硬段微区回旋半径R_2，微区间距d_2，微区半径r_2影响不大其值分别为9.5(A|°、29、7.4，但对软段的微区半径及间距影响较大，随着软段含量的增大，软段微区的半径r1和间距d1都增大。

The thesis also discussed the synthetic influence of above factors on dynamic diagenesis in detail and graded dynamic diagenesis into three types, which were respectively thermally dynamic diagenesis, tectonically dynamic diagenesis and hydrokinetic diagenesis, and then the types of diagenesis controlled by dynamic factors had been studied: 1 thermally dynamic diagenesis, clarified the ration relationship by the conception of the thermally evolving track and the thermally maturity, 2 tectonically dynamic diagenesis, changed the porosity of reservoir mainly by tectonically movement;3 . hydrokinetic diagenesis, changed the physical and chemical properties resist-press intensity of the rock by the participating of liquid.

在研究以上控制因素的基础上，将成岩动力作用分为热动力、构造动力、流体动力成岩作用三种类型：1、热动力成岩作用，运用热演化轨迹和热成熟度的概念研究与成岩作用之间的定量关系，砂岩孔隙度随热成熟度增加而呈指数减小；2、构造动力成岩作用，盆地构造变形可以使砂岩的孔隙体积在相对短的时间内产生明显的变化，构造滑脱推覆作用比水平侧向挤压作用压实减孔量小，可保留更多的孔隙度；3、流体动力成岩作用，化学成岩反应是在流体参与下完成的，它改变了岩石的物理化学性质，改变了岩石的抗压强度。

Methods The target cDNA was amplified by PCR and PCR products were indigested by restriction enzyme Nco Ⅰ and Hind Ⅲ. Then the indigested products were recombined into pET-BBH and pET-BBH was expressed in E. coli BL21 (DE3) by IPTG inducing. Next, the expressed proteins were identified by SDS-PAGE, western blot and enzyme activity test. Finally, fluorescence quantitative PCR was used to test its expression quantity in different worm stages.

PCR扩增GAMMA-BBH cDNA基因，产物经NcoⅠ和HindⅢ限制性内切酶酶切后连接至原核表达载体重组为pET-BBH，在BL21(DE3)中用IPTG诱导表达，SDS-PAGE、Western blot和酶活性测定鉴定表达产物，用荧光定量PCR方法检测广州管圆线虫不同虫龄GAMMA-BBH的表达量。

For some rock slopes, which have not distinct failure surface, but have complicated structure or load on the top and so on, a stability analysis of this type slopes by finite element method is presented, the failure surface is defined by certain rule or strain zone from the computed model, and then the safety factor of the rock slope is abtained by finite element method and limit equilibrium methodAt last, using ANSYS , a famous commercial finite element analysis software, a example of high-steep slope which is bearing the load of the LongGe Mansion is presented, the stability of this slope is studied, as a paradign the the stability evalution of complicated high-steep slope under the action of load of building , the chapter gives some meritable reference in stability assessment of rock slopes using numerical simulation by three-dimension elastic-plastic finite element.

并用有限单元法建立边坡的具体模型，应用折减边坡岩体参数、逐级施加荷载等与边坡工作环境相似的方法进行模拟计算，根据计算结果，采用一定的判别准则或图形可视化方法，确定出边坡的滑裂面，再采用刚体极限平衡法或有限单元法计算其安全系数；最后，通过某一工程实例，用大型有限元程序对边坡在建筑物荷载作用下的稳定性进行分析研究，并以此作为计算分析复杂高边坡在高层建筑物作用下的稳定性评价的一个范例，在采用有限元弹塑性数值模拟岩质边坡稳定性方面提供一些有价值的参考。

The magnetite with a mean diameter of 8nm was prepared by chemical coprecipitation methods. By the addition of nonionized oleic acid to the suspension of magnetite in solution during precipitation, the magnetite nanoparticles were coated with a double surfactant layer. A gel-like precipitated precursor is then formed because of the hydrophobic interaction among those coated units. By transferring of this precursor to an organic solvent, the surfactant double layer on Fe〓O〓 nanoparticles reduces to one; however, it still remains as a double layer by transferring to an alkaline aqueous solution. Both these cases give in stable colloids of superparamagnetic Fe〓O〓 nanoparticles.

从解决无机磁性Fe〓O〓颗粒与有机烯类单体的相容性入手，采用化学共沉淀法，制备了平均直径为8nm的超顺磁性Fe〓O〓颗粒，在制备过程中以非离子形式引入油酸，在Fe〓O〓颗粒表面形成一个具有双层结构的疏水外壳，并通过疏水相互作用凝聚成磁性Fe〓O〓凝胶，能够以单分子层结构形式溶解在非极性溶剂中，也能够以双分子层结构形式溶解在碱性水溶液中，形成稳定的超顺磁性Fe〓O〓溶胶。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新