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Control of Cell Surface Topography
Nature, 1974ACCORDING to the fluid mosaic model of membrane structure1, surface proteins are free to diffuse in a lipid matrix and thus to assume a random or homogenous distribution over the cell surface. In support of this model it has been shown that the distribution of glycoprotein receptors for the plant lectin concanavalin A (con A) is random in all cell ...
R D, Berlin +3 more
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Surface Topography for Patient Repositioning
Medical Dosimetry, 1991For many years, this group has been interested in the measurement of patient surface contours in order to prepare radiotherapy compensators. Recently, these surface measurements have been made using optical ranging techniques (Medical Physics 16:425; 1989).
J A, Berry, J E, Aldrich
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Surface topography of etched GaAs surfaces
International Journal of Electronics, 1986Double replica TEM of etched (100) GaAs surfaces has shown that acidic etching gives rough island-type Features whereas alkaline solutions seem to produce smooth surfaces.
B. R. SETHI, H. L. HARTNAGEL, G. JOURDAN
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2001
We have seen from Chapter 3 that measuring a surface implicitly involves filtering the surface. In other words it is impossible to measure a surface without applying a filter to the measurand. Examples of filters encountered in surface topography measurement systems include: 1. mechanical — e.g. a skid, stylus radius, traverse length; 2.
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We have seen from Chapter 3 that measuring a surface implicitly involves filtering the surface. In other words it is impossible to measure a surface without applying a filter to the measurand. Examples of filters encountered in surface topography measurement systems include: 1. mechanical — e.g. a skid, stylus radius, traverse length; 2.
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Surface topography of ultramicrotome sections
Journal of Ultrastructure Research, 1969During ultramicrotomy the blocks of embedding medium are compressed to a certain degree by the cutting force of the knife, and a section cut under such conditions does not necessarily correspond to a flat plane through the uncompressed block. After each stroke over the knife the block resumes its uncompressed shape, and the cut surface of the block ...
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Surface Topography in Tribology
Physics Bulletin, 1982At Teesside Polytechnic last October a very successful one-day meeting on surface topography in tribology was held by the recently formed Tribology Group of The Institute of Physics. Invited papers were presented on adhesion, on the tribology of thin films, and on wear and scuffing problems in internal combustion engines and other engineering ...
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1994
Abstract Most surfaces have regular and irregular spacings that tend to form a pattern or texture on the surface. This article provides information on the general background of surface topography and discusses the different methods for measuring surface topography, namely, contact and noncontact techniques, and the focus-follow method ...
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Abstract Most surfaces have regular and irregular spacings that tend to form a pattern or texture on the surface. This article provides information on the general background of surface topography and discusses the different methods for measuring surface topography, namely, contact and noncontact techniques, and the focus-follow method ...
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Surface Topography and Surface Contaminants
1998Most surfaces of solids are rough, at least on a microscopic scale. Most engineering surfaces are covered by asperities having slopes in the range 5° – 10°. Unlubricated metal surfaces encountered in an industrial environment will, in general, be covered by a whole series of surface films, as shown in Fig. 4.1. Working outwards from the metal interior,
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