基于电流镜积分读出电路的X射线CMOS图像传感器 (CMI X IS)的原理 ,并对电流镜积分读出电路进行了计算机模拟。对CMI X IS的性能参数进行了测试 ,并对光电转换特性曲线进行了分析。设计了CMI X IS的应用电路 ,得到了不同密度、不同尺寸...基于电流镜积分读出电路的X射线CMOS图像传感器 (CMI X IS)的原理 ,并对电流镜积分读出电路进行了计算机模拟。对CMI X IS的性能参数进行了测试 ,并对光电转换特性曲线进行了分析。设计了CMI X IS的应用电路 ,得到了不同密度、不同尺寸材料的视频信号波形。测试结果和实验表明 ,CMI X IS具有较低的暗噪声、较大的响应度、较高的输出电压和较宽的动态范围 ,可以应用于X射线实时成像检测领域。展开更多
目的:探讨艾灸对幽门螺杆菌(Helicobacter pylori,H.pylori)胃炎大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞核因子-B(nuclear factor-B,NF-B)、I B含量的影响,初步揭示艾灸干预H.pylori胃黏膜炎性损伤,保护胃黏膜的机制.方法:50...目的:探讨艾灸对幽门螺杆菌(Helicobacter pylori,H.pylori)胃炎大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞核因子-B(nuclear factor-B,NF-B)、I B含量的影响,初步揭示艾灸干预H.pylori胃黏膜炎性损伤,保护胃黏膜的机制.方法:50只健康大鼠随机分为5组,即A空白组、B模型组、C艾灸组、D艾灸非穴点组和E电针组,每组10只.采用H.pylori灌胃造模,蛋白免疫印记法检测大鼠外周血单核细胞NFB、I B的含量.结果:与A组比较,B组大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞NF-B含量显著升高(0±2.0 vs 2.5±2.5,0.54±0.11/-actinvs 0.36±0.13/-actin,P<0.01),I B含量显著降低(0.21±0.03/-actin vs 0.65±0.18/-actin,P<0.01);与B组比较,C组大鼠胃黏膜H E染色镜检胃黏膜炎症积分值和单核细胞NF-B含量显著减低(2.5±2.5 vs 0±2.00,0.36±0.13/-actin vs 0.50±0.04/-actin,P<0.01),I B含量显著升高(0.65±0.18/-actin vs 0.24±0.06/-actin,P<0.01);与D组相比,C组大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞NF-B含量明显升高(3.00±2.5 vs 0±2.00,0.36±0.12/-actin vs 0.50±0.04/-actin,P<0.01),I B含量显著降低(0.64±0.19/-actin vs 0.24±0.06/-actin,P<0.01);与E组相比,C组大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞NF-B含量明显升高(3±2.75 vs 0±2.00,0.35±0.10/-actin vs 0.50±0.04/-actin,P<0.01),I B含量显著降低(0.52±0.17/-actinvs 0.24±0.06/-actin,P<0.01).结论:艾灸穴位可减轻H.pylori胃炎胃黏膜炎性损伤,此作用可能与艾灸诱导单核细胞I B大量表达,抑制NF-B表达,减少炎性细胞因子的释放,减轻胃黏膜炎症损伤有关.展开更多
TN242 2003020966强激光积分变换镜的光学性能及相关热作用=Optical capabilityand relative heat action of a high-power integratingmirror[刊,中]/李俊昌(昆明理工大学.云南,昆明(650093)),郑启光…//光电子·激光.-2002,13(8)....TN242 2003020966强激光积分变换镜的光学性能及相关热作用=Optical capabilityand relative heat action of a high-power integratingmirror[刊,中]/李俊昌(昆明理工大学.云南,昆明(650093)),郑启光…//光电子·激光.-2002,13(8).-767-772根据标量衍射理论研究一种常用积分镜,导出任意给定入射光束时在光学系统后不同空间平面上光束的强度分布,给出模拟计算实例,讨论经积分镜变换后光束的热作用。研究结果表明,变换光束带有强烈的干涉及衍射结构,入射光束分布及工作平面位置的选择对变换结果有显著影响。对于导热性能较好的材料。展开更多
A broadband microstrip patch antenna was analyzed and designed.Full wave analysis method(FWAM) was employed to show that a stacked microstrip dual patch antenna(SMDPA) might have a much wider bandwidth than that of ...A broadband microstrip patch antenna was analyzed and designed.Full wave analysis method(FWAM) was employed to show that a stacked microstrip dual patch antenna(SMDPA) might have a much wider bandwidth than that of the ordinanry uni patch one.By means of discrete complex image theory(DCIT),the Sommerfeld integrals (SI) involved were accurately calculated at a speed several hundred times faster than numerical integration method(NIM).The feeding structure of the SMDPA was then improved and the bandwidth was extended to about 22% or more for voltage standing wave ratio (VSWR)s≤2 Finally,a matching network was constructed to obtain a bandwidth of about 25% for s≤1.5.展开更多
文摘基于电流镜积分读出电路的X射线CMOS图像传感器 (CMI X IS)的原理 ,并对电流镜积分读出电路进行了计算机模拟。对CMI X IS的性能参数进行了测试 ,并对光电转换特性曲线进行了分析。设计了CMI X IS的应用电路 ,得到了不同密度、不同尺寸材料的视频信号波形。测试结果和实验表明 ,CMI X IS具有较低的暗噪声、较大的响应度、较高的输出电压和较宽的动态范围 ,可以应用于X射线实时成像检测领域。
文摘目的:探讨艾灸对幽门螺杆菌(Helicobacter pylori,H.pylori)胃炎大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞核因子-B(nuclear factor-B,NF-B)、I B含量的影响,初步揭示艾灸干预H.pylori胃黏膜炎性损伤,保护胃黏膜的机制.方法:50只健康大鼠随机分为5组,即A空白组、B模型组、C艾灸组、D艾灸非穴点组和E电针组,每组10只.采用H.pylori灌胃造模,蛋白免疫印记法检测大鼠外周血单核细胞NFB、I B的含量.结果:与A组比较,B组大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞NF-B含量显著升高(0±2.0 vs 2.5±2.5,0.54±0.11/-actinvs 0.36±0.13/-actin,P<0.01),I B含量显著降低(0.21±0.03/-actin vs 0.65±0.18/-actin,P<0.01);与B组比较,C组大鼠胃黏膜H E染色镜检胃黏膜炎症积分值和单核细胞NF-B含量显著减低(2.5±2.5 vs 0±2.00,0.36±0.13/-actin vs 0.50±0.04/-actin,P<0.01),I B含量显著升高(0.65±0.18/-actin vs 0.24±0.06/-actin,P<0.01);与D组相比,C组大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞NF-B含量明显升高(3.00±2.5 vs 0±2.00,0.36±0.12/-actin vs 0.50±0.04/-actin,P<0.01),I B含量显著降低(0.64±0.19/-actin vs 0.24±0.06/-actin,P<0.01);与E组相比,C组大鼠胃黏膜HE染色镜检胃黏膜炎症积分值和单核细胞NF-B含量明显升高(3±2.75 vs 0±2.00,0.35±0.10/-actin vs 0.50±0.04/-actin,P<0.01),I B含量显著降低(0.52±0.17/-actinvs 0.24±0.06/-actin,P<0.01).结论:艾灸穴位可减轻H.pylori胃炎胃黏膜炎性损伤,此作用可能与艾灸诱导单核细胞I B大量表达,抑制NF-B表达,减少炎性细胞因子的释放,减轻胃黏膜炎症损伤有关.
文摘TN242 2003020966强激光积分变换镜的光学性能及相关热作用=Optical capabilityand relative heat action of a high-power integratingmirror[刊,中]/李俊昌(昆明理工大学.云南,昆明(650093)),郑启光…//光电子·激光.-2002,13(8).-767-772根据标量衍射理论研究一种常用积分镜,导出任意给定入射光束时在光学系统后不同空间平面上光束的强度分布,给出模拟计算实例,讨论经积分镜变换后光束的热作用。研究结果表明,变换光束带有强烈的干涉及衍射结构,入射光束分布及工作平面位置的选择对变换结果有显著影响。对于导热性能较好的材料。
文摘A broadband microstrip patch antenna was analyzed and designed.Full wave analysis method(FWAM) was employed to show that a stacked microstrip dual patch antenna(SMDPA) might have a much wider bandwidth than that of the ordinanry uni patch one.By means of discrete complex image theory(DCIT),the Sommerfeld integrals (SI) involved were accurately calculated at a speed several hundred times faster than numerical integration method(NIM).The feeding structure of the SMDPA was then improved and the bandwidth was extended to about 22% or more for voltage standing wave ratio (VSWR)s≤2 Finally,a matching network was constructed to obtain a bandwidth of about 25% for s≤1.5.