Morphological and Dimensional Characteristics of Bone Mineral Crystals

2006 ◽  
Vol 309-311 ◽  
pp. 3-6 ◽  
Author(s):  
S. Bertazzo ◽  
Celso A. Bertran
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Bone Mineral ◽  
Crystal Size ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Parietal Bone ◽  
Morphological Unit ◽  
Size And Morphology ◽  
Scanning Electron

In this work, Scanning Electron Microscopy (SEM) has been used to determine the size and morphology of bone mineral crystals obtained from hydrazine-deproteinated parietal bone and femur of Wistar rats aged 15 days, 1 month and 1 year. Apart from the Scanning Electron Microscopy study, crystal size was also determined by X-ray diffractometry, using the Debye- Scherrer equation. Analyzing the results obtained and those reported in the literature for isolated crystals, it is possible to evaluate the influence of age and type of bone on the nanostructure of bone mineral and also propose the existence of a fundamental morphological unit that repeats itself in bone mineral formation.

To morphology, ecology and distribution of rare species Sellaphora hustedtii (Krasske) Lange-Bertalot et Werum (Bacillariophyta) from waterbodies of the Gydan Peninsula

2014 ◽  
Vol 48 ◽  
pp. 57-65 ◽  
Author(s):  
S. I. Genkal ◽  
M. I. Jarushina
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
River Basin ◽  
Rare Species ◽  
Western Siberia ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Diagnostic Features ◽  
Scanning Electron Microscopy Study ◽  
Scanning Electron

A rare species Sellaphora hustedtii, which is also new for the flora of Russia, has been found in waterbodies of the Messoyakha River basin (south-western part of the Gydan Peninsula, Western Siberia). The scanning electron microscopy study revealed variability of the main quantitative and qualitative diagnostic features of the species (length and width of the valve, number of striae and areolae in 10 μm, shape of the valve and structure of the raphe). New data on the ecology and distribution of the species allowed us to specify its diagnosis.

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