منابع مشابه
Tube Morphogenesis Making and Shaping Biological Tubes
Many organs are composed of epithelial tubes that transport vital fluids. Such tubular organs develop in many different ways and generate tubes of widely varying sizes and structures, but always with the apical epithelial surface lining the lumen. We describe recent progress in several diverse cell culture and genetic models of tube morphogenesis, which suggest apical membrane biogenesis, vesic...
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Cold drawing process is one of the most used metals forming processes in industries for forming seamless tubes. This process of plastic deformation of metals occurs below the recrystallization temperature and is generally performed at room temperature. When metal is cold worked, upon the release of forming force, the springback occurs. In this paper, the springback effect of the seamless tube t...
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Gastrulation is a fundamental phase of animal embryogenesis during which germ layers are specified, rearranged, and shaped into a body plan with organ rudiments. Gastrulation involves four evolutionarily conserved morphogenetic movements, each of which results in a specific morphologic transformation. During emboly, mesodermal and endodermal cells become internalized beneath the ectoderm. Epibo...
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The feature of continuous interaction in pen-based system is critically significant. Seamless mode switch can effectively enhance the fluency of interaction. The interface which incorporated the advantages of seamless and continuous operation has the potential of enhancing the efficiency of operation and concentrating the users' attention. In this paper, we present a seamless and continuous ope...
متن کاملQuaternion Frenet Frames: Making Optimal Tubes and Ribbons from Curves
Andrew J. Hanson Computer Science Department Indiana University Bloomington, IN 47405 [email protected] } Introduction } Our purpose here is to show how the quaternion formalism can be applied with great success not only to the interpolation between coordinate frames, but also to a remarkably elegant description of the evolving coordinate-frame geometry of curves. Speci c applications of th...
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ژورنال
عنوان ژورنال: Developmental Biology
سال: 2008
ISSN: 0012-1606
DOI: 10.1016/j.ydbio.2008.05.446