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During these years (1997-2000) in the research area of annonaceous acetogenins 5 natural products and a number of chiral-pure analogs of annonaceous acetogenins have been synthesized using sugars as the starting materials. Their high activity and selectivity against cell line of colon tumor and a relationship between activity and configuration have been found too. In the respect of inhibitor of sialidase two new methodologies for the synthesis of chiral-pure 3-deoxy-ulosonic acid using hetero-Diels-Alder reaction or asymmetric propargylation as the key reaction were developed. On the topic of anti-leukemia marine natural product clavulactone a synthetic method based on the free radical cyclization and starting from sugar has been developed. In other title of PKC inhibited agent sphingosine a new synthetic route with SN2' as the key reaction has also been disclosed.

项目期间（1997-2000）在番荔枝内酯方面从糖出发合成了五个天然产物和一批手性纯的类似物，它们对肠癌细胞有很高的活性和选择性，并与构型有关；在唾液酸酶抑制剂方面发展了二类全新手性纯高碳糖的合成方法－杂原子D－A反应或丙炔基不对称加成为关键的反应；抗白血病海洋天然产物群柱虫内酯方面研究了由糖出发和自由基环化反应的合成方法；对PKC 起抑制作用的鞘氨醇方面也开创了新的合成途径－由糖出发并以SN2'反应为关键反应。

Not only can effectively control the squirrel-cage three-phase asynchronous motor starting current, the current slowdown of the motor and the impact of power grids, and the structure is simple, reliable operation and lower costs for promotion, but also in the process of starting and running current detection, Voltage parameters, the abnormal processing, display and alarm, to achieve the comprehensive protection of the motor.

不仅能有效控制鼠笼式三相异步电动机起动电流，减缓电流对电动机和电网的冲击，且结构简单，运行可靠，成本较低，适合推广，还能在起动和运行过程检测电流、电压参数，对异常情况进行处理、显示及报警，实现对电动机的综合保护。就是以上的了，电气专业英语好的帮下忙，万分感谢

I have really outlined what I would do it I were just starting out in this post (http://www.thedividendguyblog.com/how-would-i-invest-if-i-were-just-starting-out/).

我真的概述了我这样做了，我是刚开始，这个职位（http：//www.thedividendguyblog.com/how-would-i-invest-if-i-were-just-starting-out/）。

Faced with the starting post, i was almost unable to move, the landlord for that split from the big paper, he made me could not help but turn to the starting time of the post, each one to see, and appreciates feeling irritable long on a few am, i always wonder whether or not god flexible灵秀in its exterior, as well as enable the people do not know in march meat gives wear residual sound beams, three days we do not feel.

面对楼主的帖子，我震惊得几乎不能动弹了，楼主那种裂纸欲出的大手笔，竟使我忍不住一次次的翻开楼主的帖子，每看一次，赞赏之情就激长数分，我总在想，是否有神灵活在它灵秀的外表下，以至能使人三月不知肉味，使人有余音穿梁，三日不绝的感受。

Another wire was often placed across the track at the starting post to help check for false starts; this led to another expression: from wire to wire, from the starting post to the finishing line, hence from end to end of a contest.

我们威斯康星州和全美国真正需要的是使经济发展，让每个人的工资有所增长，让人们愿意去努力工作。

Starting resistance increases with increase of thickness of mudstone layer, and increase of buried depth, and heightening of diagenesis degree, and decrease of sandy content, the ultra-pressure of fluid in pores increases as much as starting resistance with the change of above factors.

启动阻力随着泥质岩层厚度的增大、埋藏深度的增加、成岩程度的增强、砂质含量的减小而增大，孔隙流体超压也随上述因素的变化与启动阻力等量增大。

This system adopts the methods of high voltage control cabinet and starting cabinet using water resistance so that starting with heavy load of main motor and running safty is ensured.

国产水泥磨电控系统目前大多采用自成一体的单机系统，但随着多数大型水泥厂的技术改造，越来越多的水泥厂已采用了全厂集散型控制系统[1]。

Then the model is applied to simulate the direct start-up process, the reduced voltage starting process and the starting process with series resistance in the armature circuit.

据此仿真模型进行了并励直流电动机的直接起动、降压起动、电枢回路串电阻起动的实例仿真实验，给出了有关仿真结果。

In the early stage of diagenesis, the starting resistance is lesser, the fluid in pores is able to flow, the ultra pressure is made up starting resistance and viscous resistance.

因此，启动阻力是泥岩层形成孔隙流体超压的根本原因。

The starting resistance increased with rising thickness of mudstone layer,buried depth and heightening of diagenesis degree and with the decrease of sandy content.The ultra-pressure value of fluid in pores increased as much as the starting resistance with the change of above factors.

随着泥质岩层厚度的增大、埋藏深度的增加、成岩程度的增强及砂质含量的减小，启动阻力增大，孔隙流体超压值也随上述因素的变化而与启动阻力等量增大。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。