周流

The results shows that, when Re, H/D are larger, a stable vortex is generated at two sides of the convex surface.

研究结果表明当Re，H/d较大时，在凸面靶板周向两侧形成了稳定的旋流结构。

Results In group A, effusion of wound increased in 4 cases and the result of bacterial culture was negative; effusion was absorbed after 2 weeks of local irrigation, drainege and cortin management.

结果 A 组4 例伤口于术后3 d 渗液增加，渗液细菌培养为阴性，予局部冲洗、充分引流、应用皮质激素后2 周内渗液均吸收；B 组术后无大量渗液。

The 3-color cytometry can be successfully used to characterize the subsets of immune cells in decidua and periphery blood.

早孕妇女蜕膜中具有与外周血不同的免疫细胞组成，应用多色荧光标记的流式细胞术能够简单、直接地鉴定各免疫细胞亚群。

However, recently eyewitnesses say drift ice now melts in as little as one week.

然而目击者表示，流冰在短短一周内融化。

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。

A rotary separator of vacuum cleaner is composed of a dust collecting container, an opening-closing cover, and a separating plate dividing the dust collecting container into upper space and lower dust collecting chamber.

本发明属于一种真空吸尘器用的旋转分离装置，包括含有异物的空气流入其内形成螺旋流的集尘箱，可开闭集尘箱的盖，集尘箱内设有分离板，分离板与集尘箱的下侧内周面严密地结合，在分离板的下部形成集尘部；分离板是中心开有开口部的圆锥状，从上面的圆周向下倾斜形成引导部，引导部的最下端有引导异物流入到上述集尘部的流入孔。

Methods: The course of the infection was observed for 20 weeks. Spleen cells from mice infected with Echinococcus granulosus were collected in different period, CD4+ and CD8+ cell levels were determined by flow cytometre.

对感染细粒棘球蚴的昆明种小鼠观察20周，在不同时间取脾制备细胞悬液，用流式细胞术检测CD4+、CD8+淋巴细胞的百分率。

Methods Twenty－seven patients with advanced pancreatic cancer were treated by occlusion of peripancreatic arteries and intratumoral injection of anhydrous alcohol after bilio－enterostomy and/or gastro－enterostomy.The survival time and effects of symptom relieving were investigated.

晚期胰腺癌27例，在胆肠和胃肠转流手术基础上行胰周动脉结扎及术中瘤体内注射无水酒精，观察生存期及症状缓解情况。

Objective To establish a method for detection of CD4(superscript +) CD25(superscript +) forkhead box p3 (Foxp3)(superscript +) nature regulatory T cells in peripheral blood by flow cytometry and evaluate its significance in patients with systemic lupus erythematosus.

目的 探讨流式细胞术检测CD4 CD25叉头状转录因子(Foxp3)天然调节性T细胞的方法及其在系统性红斑狼疮患者外周血中改变的意义。

Based on field survey,it is identified that the non-point sources of Wuli Lake are from urban roads,residential areas,agriculture,and fertilization of greensward.

现场调查显示，五里湖非点源污染物来源于城区道路、居民区、农业和绿化施肥等方面，在降雨时通过河道、湖周散流和大气沉降方式入湖。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。