查询词典 scan rate

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 denaturation temperature T m increased with the increase of scan rate and the additive concentrations, while decreased with the increase of phosphate concentration.

变性温度 T m随扫描速率和添加剂浓度的增加而提高，随磷酸盐缓冲液浓度的增加而降低。

This high accuracy data acquisition occurs at an input scan rate of 8Hz (all channels scanned every 125ms).

这精度高，数据采集发生在一个输入扫描率8Hz （所有通道扫描每125ms ）。

The peak current in cyclic voltammogram is proportional to the scan rate.

SCE。循环伏安法的峰值与扫描率相对称。

Several parameters of the voltammetric determination, such as the kind of electrolytes scan rate, pH value, were investigated.

利用伏安法、计时电量法及旋转圆盘电极法对其氧化还原过程进行研究，得出其的电子转移数均为2。

Memory bottlenecks are determined by the scan rate .

内存瓶颈取决于sr，即扫描率。

The influences of temperature,scan rate and nitromethane concentration on the electrochemical characteristics of nitromethane were also discussed.

以铂微盘电极为工作电极，采用循环伏安等测试方法研究了硝基甲烷在离子液体1-正丁基-3-甲基咪唑六氟磷酸盐(BMImPF6)中的电化学行为，讨论了温度、扫描速度以及底物浓度等因素对其电化学行为的影响。

The influences of temperature and scan rate on the electrochemical characteristics of nitromethane were also investigated by using cyclic voltammetry.

采用循环伏安等测试方法，以铂微盘电极为工作电极，研究了硝基甲烷在离子液体1-正丁基-3-甲基咪唑四氟硼酸盐(BMImBF4)中的电化学行为，并探讨了温度和扫描速率等因素对硝基甲烷电化学特性的影响。

In the potential range of -0.2～+0.8V,at scan rate of 1mV/s in 1mol/L Na_2SO_4 aqueous electrolyte,the synthesized NiO material prepared by pH sulotion of 11.7 and heat-treat temperature of 500℃and heat-treat time of 8h has a high specific capacitance of 38.2F/g.

比较不同工艺条件制备的NiO材料，发现反应溶液pH值等于11.7、热处理温度500℃以及热处理时间8h的NiO电极材料比容量最高，在1mol/L Na_2SO_4溶液、-0.2～+0.8V扫描电位内，1mV/s扫描速率下达到38.2F/g。

Bending angle about material augments along with laser power and laser light spot diameter augment, but bending angle about material minishes along with laser scan rate and material hardness augment.

随着激光功率和激光光斑直径的增加板材弯曲角度增大，但随着激光扫描速度和板材厚度的增加弯曲角度减小。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。