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Material and Methods:From March,2008 to January,2009,250 patients(146 Males and 104 Females,ranged from 18 to 82 years old,mean age was 48 years old) enrolled in the First Affiliated Hospital of Kunming Medical College were performed dual energy scan(Group A,200 patients) and Neuro-DSA scan(Group B,50 patients) using DSCT.The patients were randomly divided into Group A and Group B.Regarding to the justification of scan protocol,100 patients in Group A were selected as sub-group to explore the scan protocol.The image quality Was analyzed both in four categories(4.0/60、4.5/60、4.0/70、4.5/70) of flow rate and total amount of contrast-enhanced material and in three categories(100—150HU、150—200HU、200-250HU) of CT value of left common carotid artery.The comparison of two scan approach was based on image quality,radiation does, postprocessing methods,time of scanning and subtraction and data storage amount.To validate the diagnostic capability of DE-CTA virtual unenhanced images,100 patients in Group A were undergoing head scan both in routine non-contrast program and DE-CTA virtual unenhanced program.Mean CT values,signal-to-noise ratio,image quality,sensitivity of lesion identification,and radiation does were applied to comparison.According to diagnostic results of dual energy of cerebral arterial angiography,62 patients out of 200 patients in Group A were confirmed with cerebral vessel lesions,the results were complied with DSA findings(the time between the two methods were within 1 week).

材料与方法收集2008年3月到2009年1月间在昆明医学院第一附属医院行DSCT CTA检查者250例(男性146例，女性104例，年龄范围18-82岁，平均48岁)，随机分为A、B两组，A组200例行双能量头颅CTA扫描；B组50例行Neuro-DSA扫描。A组前100例按对比剂不同流率和总量分为4组(4.0/60、4.5/60、4.0/70、4.5/70)对图像质量比较；按触发时左颈总动脉内平均CT位分3组(100—150HU、150—200HU、200-250HU)，比较图像质量的差异；对A、B两组血管图像质量、辐射剂量、后处理的方法、扫描和后处理时间及数据的容量进行比较分析；A组中前100例行常规与DE-CTA虚拟平扫的平均CT值、信号噪声比、图像质量、病灶显示情况、辐射剂量的比较分析；A组中行DSA检查62例(两种方法间隔时间均1周内)，比较两种检查方法诊断结果是否符合，并对其中24例动脉瘤行动脉瘤部位、数目、形态、瘤颈显示程度、瘤颈大小及瘤体长径和短径的比较研究。

Methods 42 patients(42 eyes) with phacoemulsification were accompanying with hypertension and diabetes mellitus, cases of ECCE were the control group accompanying with hypertension and diabetes mellitus.

42例（42眼）高血压合并糖尿病白内障患者行白内障超声乳化联合人工晶体植入术；对照组为高血压合并糖尿病患者行白内障囊外摘除联合人工晶体植入术。

This program primely adopt the tactics that weaken the action strength of opponent.four corners priority tactics、the most edacity tactics.at the beginning of the game and the middle of the game,the program adopt weaken the action strength of opponent,namely reduce the positionn of the opponent to play the chess mostly;at the end of the game we use the he most edacity tactics,namely to eat up the chess of the opponent to the best of one ' s abilities;the four corners priority tactics is run through the whole game,the four corners of the chessboard are stabilization corner,can ' t eated up by the opponent,so here is the most important position of player to contest,at the same time of prevent opponent to put the chess in the corners of the chessboard,we make great efforts to put the chess in the corners.

本文首先详细介绍了黑白棋的游戏规则，和一些基本的战术，然后将这些战术编写成代码存储在计算机中，使计算机在对弈过程中，可以灵活的运用这些战术。该程序主要运用的战术有削弱对手行动力战术、四角优先战术、最大贪吃战术。在游戏开局和中局时，程序采用削弱对手行动力战术，即尽量减少对手能够落子的位置；在游戏终局时则采用最大贪吃战术，即尽可能多的吃掉对手的棋子；而四角优先战术则是贯穿游戏的始终，棋盘的四角为稳定角，不会被对手吃掉，所以这里是兵家的必争之地，在阻止对手进角的同时，自己却又要努力的进角。

Command Line Editing - A backspace can be used to edit the command line beforeexecution.

命令行编辑-一个退格键可用于编辑命令行beforeexecution。

To edit inside the Input Line area, click the appropriate part of the Input Line area, then type your changes.

在输入行内进行编辑，点击输入行区域的相关部分，然后键入您的更改。

Endometriosis was surgically induced in 80 SD rats, The growth of the transplant and rats' estrus cycle was observed in different times after the implantation operation. The endometrum of the uninjured side and the ectopic endometrum were taken for observing by microscope and electroscope.

采用外科诱导法对80只大鼠行建模手术，在术后的第3周、第5周、第7周和第12周动态观察病灶的生长情况和大鼠的动情周期变化，取健侧子宫角中段的在位内膜、异位内膜行组织学研究。

Based on the algorithm, the module outputs trigger pulse to SCR..This high voltage electrostatic precipitation controller has a 10Base-T Ethernet module and 3 asynchronous serial communication modules; Both RS485 and RS232 are integrated in the asynchronous serial communication modules.

高压静电除尘控制器还同时具有一个10Base-T以太网接口和三个异步串行通信接口，其中三个异步串行口可任意选择采用RS485标准或是RS232标准，可支持不同通信格式、不同通信速率和不同通信协议。

A unit of verse consisting of two lines, especially as used in Greek and Latin elegiac poetry.

自成一段的两行诗由两行组成的一个完整的诗，尤用于希腊文和拉丁文挽诗中

The article by several opposite examples illustrated the former method of finding vector group's maximum linearly independent vector group is imperfect, sometimes even lead to wrong results. The method is that make use of row vector as matrix and then change matrix by performing elementary row operation.

本文通过几个反例说明了在求向量组的极大无关组时，以往普遍使用的以向量为行向量作矩阵，再对矩阵作初等行变换的方法是不完善的，甚至会导致错误的结果。

Emergency operation were performed on 21 patients,including embolectomy on 9 cases, embolectomy and intestinal resection on 8 cases, intestinal resection and anastomosis on 3 cases, intestinal resection and enterostomy on 1 case.,expectant treatment on 6 cases.

急诊行手术治疗21例，其中单纯行肠系膜上动脉取栓术9例，肠系膜上动脉切开取栓加肠切除吻合术8例，单纯肠切除吻合术3例，肠切除加肠造瘘术1例。保守治疗6例。

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％。