Google Earth软件是目前对3D建模技术支持较好的软件。城市景观3D建模技术在城市规划、突发事件应急等许多领域都有重要的应用。分析了向Google Earth发布3D模型的技术并就其中的难点问题进行了分析并提出了解决方法。对城市景观3D建模...Google Earth软件是目前对3D建模技术支持较好的软件。城市景观3D建模技术在城市规划、突发事件应急等许多领域都有重要的应用。分析了向Google Earth发布3D模型的技术并就其中的难点问题进行了分析并提出了解决方法。对城市景观3D建模项目的开发具有一定的指导意义。展开更多
The catalytic activity of Perovskite-type mixed oxides (LaCoO3, PrCoO3 and SmCoO3) for the reduction of cyclohexanone to cyclohexanol with 2-propanol (Meerwein-PonndorfVerley reduction) has been studied. The data have...The catalytic activity of Perovskite-type mixed oxides (LaCoO3, PrCoO3 and SmCoO3) for the reduction of cyclohexanone to cyclohexanol with 2-propanol (Meerwein-PonndorfVerley reduction) has been studied. The data have been correlated with the surface electron donor properties of these mixed oxides展开更多
The leakage occurs during operation of the dam in Liuhuanggou reservoir. It’s a threat to the safety of the people’s lives and property in downstream. In order to eliminate the hidden danger of reservoir, ensure the...The leakage occurs during operation of the dam in Liuhuanggou reservoir. It’s a threat to the safety of the people’s lives and property in downstream. In order to eliminate the hidden danger of reservoir, ensure the safety of the dam, play better the function of flood control and water storage of the reservoir etc., we apply the 3D electrical resistivity tomography detecting technology and volume rendering image processing technology, make the measurement in field, process the data and combine the field survey to find out the leakage channels inside the dam. The results show that the 3D resistivity images appear the low resistivity zone corresponding with the leakage channels. There are two main leakage channels that come from different location inside the dam. It is feasible to diagnose the leakage in earth rock-fill dam by applying 3D electrical resistivity tomography.展开更多
Google Earth是当前非常流行的三维虚拟地球仪软件,以在全球范围内提供丰富的遥感影像资源而著称,得到了许多行业的普遍应用。我国目前地震应急指挥工作的GIS数据还是以二维展示为主,引入新技术具有重要的意义。Google Earth在我国的地...Google Earth是当前非常流行的三维虚拟地球仪软件,以在全球范围内提供丰富的遥感影像资源而著称,得到了许多行业的普遍应用。我国目前地震应急指挥工作的GIS数据还是以二维展示为主,引入新技术具有重要的意义。Google Earth在我国的地震应急指挥工作中可以采取如下应用方案:制作并加载行政区划图,发布公众地震信息;与GPS结合,进行救援路线导航与跟踪;根据现场资料建立三维模型,展现地震灾区现场立体场景变化。该应用方案对我国的地震应急指挥改革具有借鉴意义。展开更多
文摘The catalytic activity of Perovskite-type mixed oxides (LaCoO3, PrCoO3 and SmCoO3) for the reduction of cyclohexanone to cyclohexanol with 2-propanol (Meerwein-PonndorfVerley reduction) has been studied. The data have been correlated with the surface electron donor properties of these mixed oxides
文摘The leakage occurs during operation of the dam in Liuhuanggou reservoir. It’s a threat to the safety of the people’s lives and property in downstream. In order to eliminate the hidden danger of reservoir, ensure the safety of the dam, play better the function of flood control and water storage of the reservoir etc., we apply the 3D electrical resistivity tomography detecting technology and volume rendering image processing technology, make the measurement in field, process the data and combine the field survey to find out the leakage channels inside the dam. The results show that the 3D resistivity images appear the low resistivity zone corresponding with the leakage channels. There are two main leakage channels that come from different location inside the dam. It is feasible to diagnose the leakage in earth rock-fill dam by applying 3D electrical resistivity tomography.
