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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。

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。

Use subheading as the title (third line, immediately after the title line) when generating assembly listings.

当生成汇编清单时，使用subheading作为标题（第3行，紧跟在标题行之后）。

When he that has given no provocation to malice, but by attempting to excel, finds himself pursued by multitudes whom he never saw, with all the implacability of personal resentment; when he perceives clamour and malice let loose upon him as a public enemy, and incited by every stratagem of defamation; when he hears the misfortunes of his family, or the follies of his youth, exposed to the world; and every failure of conduct, or defect of nature, aggravated and ridiculed; he then learns to abhor those artifices at which he only laughed before, and discovers how much the happiness of life would be advanced by the eradication of envy from the human heart.

倘若遭妒忌者从不招惹怨恨，而只想凭真才实学超凡出众，那当他发现自己被一群他觉得与之并无不可化解之个人恩怨的民众纠缠之时，当他发现自己被种种诽谤伎俩煽动起来的铺天盖地的恶意丑化成社会公敌之时，当他得知自己家庭之不幸和少时的愚行而被公诸于众，自己所有的不端行为和性格缺陷都被夸大和嘲笑之时，他便能学会憎恶那些他此前只是一笑置之的伎俩，并发现若能从世人心中根除嫉妒，人们会怎样更多地感受生活之幸福。

When a nominated bank acting on its nomination, a confirming bank, if any, or the issuing bank decides to refuse to honour or negotiate, it must give a s ingle notice to that effect to the presenter.

当按照指定行事的指定银行，保兑行或开证行决定拒绝承付或议付时，必须给予交单人一份单独的拒付通知。

The interventions include laser, surgical and medical therapies. Conclusions Laser peripheral iridoplasty as primary treatment to the acute attack of AACG showed a decrease of intraocular pressure more rapidly than conventional medical treatment. Laser peripheral iridotomy was an efficacious intervention to relieve pupillary block, control IOP, and prevent new attacks. LPI was found to be as effective as surgical peripheral iridectomy in the TOP control of affected or contralateral eyes of AACG.

结论目前已有较为有力证据的治疗方法：急性发作时即刻行激光周边虹膜成形术较传统的药物治疗方案降眼压作用起效快；急性发作缓解后行激光周边虹膜切开术以及对侧眼的预防性LPI，具有解除瞳孔阻滞、控制眼压和预防急性发作再发或新发的效果；LPI和周边虹膜切除手术治疗效果相当。

Results:When unilateral anterior superior iliac spine loaded by transient stress,0-10 ms,stress distributed from posterior superior iliac spine to anterior superior iliac spine,and on the last 10 ms,there were greater stress distribution around cacroiliac joint,acetabulum and pubic branch.When unilateral positive backside of ilium loaded,between 0 ms and 20 ms,stress transmitted along vertical direction of ilium,and after 20 ms,there were greater stress distribution on cacroiliac joint,both pubic branch,ischium branch and acetabulum.

结果：冲击载荷作用于单侧髂前上棘时，0～10ms主要的应力沿髂后上棘到髂前上棘分布，在冲击后期10ms以后，骶髂关节、髋臼和耻骨支都会产生较大的应力分布；作用于单侧髂骨正后方部位时，0～20ms主要的应力沿髂骨纵行传导，应力分布并没有在冲击峰值10ms时达到最大，而是从20ms之后，应力开始向骶髂关节、双侧耻骨支、坐骨支以及髋臼等部位传导并可见到明显的应力分布。

The determinant of an array which has as a row a linear combination of two or more other rows is zero.

当一个方阵的某一行是另两行或几行的线性组合时，其行列式为零。

Methods A special meridian magnetic application is found the variations of the intensity of magnetic field when it is in vitro,nipped by fingers and stuck on skin of meridian and non-meridian.

一种特制的磁疗贴，在体外、指捏、敷贴于皮肤表面的经络走行和非经络走行区时所测得的磁场强度变化。

In Nightcap National Park, you can walk to the base of Minyon Falls and meet nocturnal animals on a night vision bushwalk.

在睡帽国家公园，您可步行到名涌瀑布的底下；夜间在丛林健行时，与夜行动物不期而遇。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。