基于实验室设备自主开发了一套320 kV锥束工业CT成像系统。首先设计了基于运动控制卡的六轴机械扫描平台,并将其与320 kV射线机、平板探测器结合搭建了锥束CT成像系统的硬件。其次,利用平板探测器和运动控制卡的动态链接库开发锥束CT投...基于实验室设备自主开发了一套320 kV锥束工业CT成像系统。首先设计了基于运动控制卡的六轴机械扫描平台,并将其与320 kV射线机、平板探测器结合搭建了锥束CT成像系统的硬件。其次,利用平板探测器和运动控制卡的动态链接库开发锥束CT投影数据采集软件和重建软件,自主开发FDK算法并基于CUDA架构实现FDK算法的GPU加速。最后,采用阻尼器对锥束CT成像系统进行测试。结果表明,整个系统运行稳定,可以获得高质量的CT重建图像,且重建效果与VG STUDIO MAX 3.4软件的重建效果一致。展开更多
A study on change of contents and distribution of the rare earths in roasted tobacco plant and effects on chemical composition in roasted tobacco leaves of the rare earths was reported.The results indicate that the co...A study on change of contents and distribution of the rare earths in roasted tobacco plant and effects on chemical composition in roasted tobacco leaves of the rare earths was reported.The results indicate that the content of rare earths in tobacco plants distribute mainly in leaves;spraying the rare earths can promote the plant to absorb the soluble rare earths in soil;the plant gains the rare earth mainly from soil;the rare earths have good effects on the quality of roasted tobacco leaves.展开更多
文摘基于实验室设备自主开发了一套320 kV锥束工业CT成像系统。首先设计了基于运动控制卡的六轴机械扫描平台,并将其与320 kV射线机、平板探测器结合搭建了锥束CT成像系统的硬件。其次,利用平板探测器和运动控制卡的动态链接库开发锥束CT投影数据采集软件和重建软件,自主开发FDK算法并基于CUDA架构实现FDK算法的GPU加速。最后,采用阻尼器对锥束CT成像系统进行测试。结果表明,整个系统运行稳定,可以获得高质量的CT重建图像,且重建效果与VG STUDIO MAX 3.4软件的重建效果一致。
文摘A study on change of contents and distribution of the rare earths in roasted tobacco plant and effects on chemical composition in roasted tobacco leaves of the rare earths was reported.The results indicate that the content of rare earths in tobacco plants distribute mainly in leaves;spraying the rare earths can promote the plant to absorb the soluble rare earths in soil;the plant gains the rare earth mainly from soil;the rare earths have good effects on the quality of roasted tobacco leaves.
