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When proceeding the research of drug identification by ultraviolet spectrophotometry, this paper adopts the approaches below: to identify Metronidazole Buccal Tablets and Potassium Sodium Dehydroandroan Drographolide Succinate by ulviolet maximum absorbent wavelength; to identify Metronidazole Disodium Phosphate for Injection by ulviolet maximum absorbent wavelength and minimum absorbent wavelength; to identify Ceftriaxone Sodium for Injection and Clarithromycin Tablets by retention time of high performance liquid chromatography- ultraviolet spectrophotometry.

通过测定紫外最大吸收波长λ_(max鉴别甲硝唑口颊片和炎琥宁、测定紫外最大吸收波长λ_(max和最小吸收波长λ_(min鉴别注射用甲硝唑磷酸二钠，结合高效液相色谱(high performance liquid chromatography-ultraviolet detector，HPLC-UV)中保留时间的测定鉴别注射用头孢曲松钠和克拉霉素片，本文建立了药物鉴别的紫外分光光度法。

The affections on the yield of DLLA caused by catalyst, temperature and time etc. were studied. By using ethylene glycol as diluent, the distillate temperature of DLLA was lowed and the carbonization phenomenon could be avoided, which caused the yield of DLLA increasing from 36.8% to 51.3%. The molecular weight of PDLLA prepared by this method could reach 184,000. DLLA and PDLLA was characterized and analyzed by DSC, XRD and IR.The key of direct method to synthesize PDLLA is the exclusion of H2O from reaction system.

丙交酯开环聚合制备PDLLA的关键在于中间体D，L-丙交酯的制备，研究了催化剂、反应温度、反应时间等因素对DLLA产率的影响，通过在反应体系中加入稀释剂乙二醇，DLLA的馏出温度明显降低，避免了DLLA在蒸馏过程中产生碳化现象，并使DLLA的平均产率由36.8％提高至51.3％，制备的PDLLA分子量最大值达18.4万。

A new discrete reaching law is presented to improve the reaching process of discrete exponential reaching law.The discrete-time variable structure control system designed by this reaching law can not only weaken the chattering and control the system state approach to zero diminishingly,but also keep the basic property of quasi-sliding mode which can cross the switching surface step by step.This method improves the reaching process and enhances the control quality of the control system.

为了改善离散指数趋近律的趋近过程，提出了一种新的趋近律，利用该趋近律设计的变结构控制器，不仅能够大幅度削弱抖振，使系统运动最终趋于原点不存在稳态振荡，而且能使系统的准滑动模态保持步步穿越切换面的基本属性，有效地改善了趋近过程，提高了控制品质。

Chapter 5 deals with the solvable theorem of adaptive inverse optimal control problems for a class of stochastic nonlinear systems driven by Wiener noises of unknown covariance. The systems are depicted by It〓 stochastic differential equations. By using an adaptive backstepping algorithm and stochastic control Lyapunov functions, the designing procedure of control laws of global asymptotic stability in probability and adaptive inverse optimal stabilization in probability are presented systematically. Adaptive control laws and parameter update laws can be obtained at the same time by this design scheme.

在第5章中，针对具有方差不确定Wiener噪声扰动和未知定常参数的随机非线性系统（假设方差的F—范数是一个常数或一个缓慢变化的量，对其进行在线辨识），给出并证明了自适应逆最优控制问题可解定理，基于随机Lyapunov定理和It〓微分规则，采用自适应Backstepping设计方法，系统地设计了全局依概率渐近稳定和自适应逆最优控制策略，这种设计方法可同时获得控制策略和自适应律，计算机数值仿真结果表明该控制算法是有效性的。

At this time, we have sent personnel to attend international IEC/TC111 activities. Under coordination by the Standard Administration of China, a technical committee is formed in corresponding to the TC111 WG3 (China WG3 working group). The task of forming a working group for test procedures of national standards for the density of toxic substances of electronic and electrical products is completed. The formation of a working group for industry standards for the prevention of pollution caused by electronic information products had been completed in October, 2004. This working group starts on the formation of standards for limits, test standards, leadless soldering standards, and certification and labeling standards.

目前，我们已经派员积极参与了国际 IEC/TC111的活动，在国标委的统一协调下，牵头组织了中国对应 TC111的 WG3的一个技术委员会（目前暂称为中国 WG3工作组）；组建电子电气产品有害物质浓度检测程序国家标准工作组的工作已经完毕；电子信息产品污染控制行业标准工作组已经在2004年10月组建完成，已经开始了制定电子信息产品有毒有害物质的限量标准、检测标准、无铅焊接标准、认证与标识标准的工作

Revelations this year that hackers successfully broke into Pentagon computers, followed by off-the-record confirmation by officials speaking to the Financial Times this week that the assailants were connected to China's army, have brought the issue back to the fore.

本周出版的一些杂志披露，政府发言人向 Financial Time 承认黑客成功侵入了五角大楼，而且没有留下任何痕迹，攻击者与中国军方有某种联系。

In this dissertation, the scale-up experiments of the decomposition of toluene by pulse corona discharge in wire-plate reactor were investigated systematically, at the same time, The experiments of the decomposition of refinery odors by this technology were also studied. A pulse power based on thyratron switch, Blumlein pulse forming network and pulsed transformer was adopted.

基于上述小试成果，本文主要对有机废气中的代表性污染物模拟甲苯废气，在线板式反应器内进行了系统的放大试验研究，同时将该技术应用于实用目标炼油厂模拟恶臭废气(工业上排放的恶臭废气主要是含硫含氮的挥发性有机废气)的治理。

Saw only hidden this time already enters this planetoid huge stature the first interspace formation group, instantaneous from each starship, all launched dozens of kilometer long anchor chains, the sharp uncinus acme dodged is awaking a point of destination golden light, direction of fire this raided together the planetoid, saw only in an instant this planetoid, has been tied down by an entire circle innumerable strip spider web catena, likely suddenly bloomed the grand flowers were same, for this ugly incomparable skeleton head, added a border incomparably is together radiant the sharp pearl lace, only then the humanity could make such interspace miracle!

只见此时已经隐入这颗小行星巨大身躯的第一星际编队小组，瞬间从每一架星际飞行器上，都发射出一条数十公里长的锚链，锐利的钩状尖端闪着醒目的点点金光，一起射向这颗来袭的小行星，只见刹那间这颗小行星，就被一整圈无数条蜘蛛丝般的锁链缠住了，就像突然绽放的壮丽花朵一样，给这颗丑陋无比的骷髅头，镶上一道无比璀璨亮丽的珍珠花边，只有人类才能做出这样的星际奇迹！

In order to keep Party Awell informed of the prevailing market conditions,Party Bshould undertake to supply Party A,at least once aquarter or at any time when necessary,with market reports concerning changes of the local regulations in connection with the import and sales of the commodity covered by this agreement,local market tendency and the buyer's comments on quality,packing,price,etc.of the goods supplied by Party Aunder this agreement.

为使甲方充分了解现行市场情况，乙方承担至少每季度一次或在必要时随时向甲方提供市场报告，内容包括与本协议代理商品的入口与销售有关的地方规章的变动、当地市场发展趋势以及买方对甲方按协议供给的货物的品质、包装、价格等方面的意见。

In order to keep Party Awell informed of the prevailing market conditions,Party Bshould undertake to supply Party A,at least once aquarter or at any time when necessary,with market reports concerning changes of the local regulations in connection with the import and sales of the commodity covered by this agreement,local market tendency and the buyer's comments on quality,packing,price,etc.of the goods supplied by Party Aunder this agreement.

为使甲方充分了解现行市场情况，乙方承担至少每季度一次或在必要时随时向甲方提供市场报告，内容包括与本协议代理商品的进口与销售有关的地方规章的变动、当地市场发展趋势以及买方对甲方按协创业激励名言议供应的货物的品质、包装、价格等方面的意见。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。