The Oyster reef in Tianjin is an important geological relic remaining at Tianjin coastal plain since Holocene and records evidence of the change of sea and land and is of scientific value for induction of formation of continent of Tianjin coastal plain.The new method,high density resistivity method was tested to detect oyster reef distribution at the south bank of Zengkou River in Qilihai town,Ninghe County.Seven holes were drilled to verify the method.The drilling result is coincident with that of the high density resistivity detection thus the method is economic,quick and effective.
Objectives: Multi-plane cutting, arbitrary plane cutting and box cutting for reconstruction of images are implemented rapidly and quickly by using the Visualization Toolkit (VTK) thus it promotes the application value of medical image data. Several kinds of interactive cutting methods are proposed which aim at meeting different requirements of research and clinical diagnosis, and therefore they provide powerful image support for research education and clinical action. Methods: Firstly the VC++ project is built with VTK and MFC, which are integrated deeply then the 3D volume reconstruction for 2D medical sequence images is realized by using Ray Casting (RC) algorithm. Finally multi-plane cutting, arbitrary plane cutting and box cutting for reconstructed medical images are implemented. Results and Conclusions: The interactive cutting function for 3D medical images is implemented on the basis of Visual Studio 2005 combined with VTK. The interactive cutting can compensate effectively the disadvantages of the medical equipment can only display fixed axial plane information. Meanwhile, it can display spatial information of tissues and organs truly and completely.
As a important subject of pedology, soil micromorphology was setup in 1930s' and solved many questions of pedology. Though soil micromorphology started latter in China,some good study results have been gotten. This paper summarized its development from basic concept ,research method and appliance.
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