scholarly journals Scanning Electron Microscope Studies on the Schwann Cells in Rat Motor Endplates with Special Reference to their Finger-like Projections

1984 ◽  
Vol 47 (5) ◽  
pp. 533-539 ◽  
Author(s):  
Takuro OGATA ◽  
Yuichi YAMASAKI
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Special Reference ◽  
Schwann Cells ◽  
Motor Endplates ◽  
Scanning Electron

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

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