Conventional quantity determination of Chinese herbal medicines by High-Performance Thin-Layer Chromatography (HPTLC) must be carried out on a TLC scanner for measuring the marker component on the HPTLC plate. General...Conventional quantity determination of Chinese herbal medicines by High-Performance Thin-Layer Chromatography (HPTLC) must be carried out on a TLC scanner for measuring the marker component on the HPTLC plate. Generally the HPTLC image of the herbal drug always takes the photograph as the permanent visual document. Considering the photo of the HPTLC image preserving all the visual quality-related parameters, there might be an alternative cost/effective approach worth studying. It would be presumably applicable to use the exclusively developed software as a virtual scanner instead of the TLC Scanner instrument to do digital scanning, integrating and calculating target components in the photo of the HPTLC image. It means digitally scanning the photo of the HPTLC image solely with software does the same thing as the instrumental scanner does. Based on this protocol, we primarily conducted the assay of the contents of the major saponins, jujuboside a and jujuboside b, in Ziziphi Spinosae Semen (Suan-Zao-Ren). Using home-developed software “digiscan” for acquiring the raw data and integrating the peaks area of the target components with “Origin Pro”, the contents of jujuboside a and jujuboside b can then be calculated respectively. The primary investigated experiment results were well compatible with official HPLC-ELSD method in Chinese Pharmacopoeia. The methodology validation and comparative analysis with HPLC confirmed that the unprecedented method is acceptable. The advantage of the recommended approach is far more simple, flexible and cost/effective than the conventional method, and it can be done at anytime and anywhere once only if the high quality HPTLC image photo is available. There would be a bright perspective for application to other herbal medicines. And the one-stop software for merging digital scanning, integration and calculation together is in progress.展开更多
Digital Photo Professional（以下简称DPP）是佳能公司为其旗下各款高端相机所配备的后期影像处理软件，它为RAW格式数码照片提供了从输入到输出整套后期解决方案，摄影师只需要掌握它的使用，就能便捷地处理爱机所拍摄出的RAW格式图片...Digital Photo Professional（以下简称DPP）是佳能公司为其旗下各款高端相机所配备的后期影像处理软件，它为RAW格式数码照片提供了从输入到输出整套后期解决方案，摄影师只需要掌握它的使用，就能便捷地处理爱机所拍摄出的RAW格式图片。DPP的适用性很广，专业摄影人员可以轻松实现无损输入以及导出过程，展开更多
随着智能手机的普及应用和地理信息提取技术的发展,将智能手机拍摄的数码照片中包含有坐标信息的地物转换成地理信息数据成为可能。Exif是数码照片的元数据,在使用移动设备拍摄照片时,可将拍摄时用户的位置信息存储在Exif信息中。通过分...随着智能手机的普及应用和地理信息提取技术的发展,将智能手机拍摄的数码照片中包含有坐标信息的地物转换成地理信息数据成为可能。Exif是数码照片的元数据,在使用移动设备拍摄照片时,可将拍摄时用户的位置信息存储在Exif信息中。通过分析Exif的结构并提取地理位置信息,基于微信公众平台,结合ArcGIS API for JavaScript和腾讯地图API,设计出一套面向社会公众使用的地理信息数据采集工具,并在实地测试中得到了验证。该成果将为城市综合治理、自然资源调查监测方面提供重要的技术支撑。展开更多
Aiming at the shortage of hydroelectric engineering geological logging methods on high side slope and big gallery, the photographic methods based on digital camera were studied. By integrating the application of techn...Aiming at the shortage of hydroelectric engineering geological logging methods on high side slope and big gallery, the photographic methods based on digital camera were studied. By integrating the application of technology of close range photogrammetry, digital image processing and GIS, the photographic geological logging information system was developed. The system has the functions of digital photography, orthophotoquad making, image mosaicking, logging factors extracting and measuring, CAD mapping, etc. The methods achieve more efficient and higher precision than the regular, and it provides a new way for the hydroelectric engineering geologic logging.展开更多
文摘Conventional quantity determination of Chinese herbal medicines by High-Performance Thin-Layer Chromatography (HPTLC) must be carried out on a TLC scanner for measuring the marker component on the HPTLC plate. Generally the HPTLC image of the herbal drug always takes the photograph as the permanent visual document. Considering the photo of the HPTLC image preserving all the visual quality-related parameters, there might be an alternative cost/effective approach worth studying. It would be presumably applicable to use the exclusively developed software as a virtual scanner instead of the TLC Scanner instrument to do digital scanning, integrating and calculating target components in the photo of the HPTLC image. It means digitally scanning the photo of the HPTLC image solely with software does the same thing as the instrumental scanner does. Based on this protocol, we primarily conducted the assay of the contents of the major saponins, jujuboside a and jujuboside b, in Ziziphi Spinosae Semen (Suan-Zao-Ren). Using home-developed software “digiscan” for acquiring the raw data and integrating the peaks area of the target components with “Origin Pro”, the contents of jujuboside a and jujuboside b can then be calculated respectively. The primary investigated experiment results were well compatible with official HPLC-ELSD method in Chinese Pharmacopoeia. The methodology validation and comparative analysis with HPLC confirmed that the unprecedented method is acceptable. The advantage of the recommended approach is far more simple, flexible and cost/effective than the conventional method, and it can be done at anytime and anywhere once only if the high quality HPTLC image photo is available. There would be a bright perspective for application to other herbal medicines. And the one-stop software for merging digital scanning, integration and calculation together is in progress.
文摘随着智能手机的普及应用和地理信息提取技术的发展,将智能手机拍摄的数码照片中包含有坐标信息的地物转换成地理信息数据成为可能。Exif是数码照片的元数据,在使用移动设备拍摄照片时,可将拍摄时用户的位置信息存储在Exif信息中。通过分析Exif的结构并提取地理位置信息,基于微信公众平台,结合ArcGIS API for JavaScript和腾讯地图API,设计出一套面向社会公众使用的地理信息数据采集工具,并在实地测试中得到了验证。该成果将为城市综合治理、自然资源调查监测方面提供重要的技术支撑。
文摘Aiming at the shortage of hydroelectric engineering geological logging methods on high side slope and big gallery, the photographic methods based on digital camera were studied. By integrating the application of technology of close range photogrammetry, digital image processing and GIS, the photographic geological logging information system was developed. The system has the functions of digital photography, orthophotoquad making, image mosaicking, logging factors extracting and measuring, CAD mapping, etc. The methods achieve more efficient and higher precision than the regular, and it provides a new way for the hydroelectric engineering geologic logging.
