Analysis of human chromosomal variants by quantitative electron microscopy

Chromosoma ◽  
1971 ◽  
Vol 34 (1) ◽  
pp. 94-98 ◽  
Author(s):  
H. M. Grolomb ◽  
G. F. Bahr ◽  
D. S. Borgaonkar
Keyword(s):  
Electron Microscopy ◽  
Quantitative Electron Microscopy ◽  
Chromosomal Variants

Transient Nucleation in Co-Zr Metallic Glasses

1985 ◽  
Vol 57 ◽  
Author(s):  
Uwe Köster ◽  
Margret Blank-Bewersdorff
Keyword(s):  
Electron Microscopy ◽  
Metallic Glasses ◽  
Crystal Size ◽  
Time Lag ◽  
Size Distributions ◽  
Quantitative Electron Microscopy ◽  
Crystal Size Distributions ◽  
Different Temperatures ◽  
Transient Nucleation ◽  
Good Agreement

AbstractCrystallization kinetics and crystal size distributions in Co33Zr67-glasses have been analyzed by quantitative electron microscopy. The polymorphic crystallization of spherical CoZr2 crystals is very suitable reaction for such an analysis. Calculated crystal size distributions at different temperatures were compared to those experimentally revealed. Parameters controlling crystallization were varied within reasonable limits until theoretically calculated and experimentally observed crystal size distributions were in good agreement. It has been found that crystal size distribution can be explained by transient nucleation; the time lag and its temperature dependence can be evaluated. These results are discussed in the light of recent theories on transient nucleation.

Using quantitative electron microscopy for process mineralogy applications

JOM ◽  
2000 ◽  
Vol 52 (4) ◽  
pp. 24-25 ◽  
Author(s):  
P. Gottlieb ◽  
G. Wilkie ◽  
D. Sutherland ◽  
E. Ho-Tun ◽  
S. Suthers ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Quantitative Electron Microscopy ◽  
Process Mineralogy

Quantitative electron microscopy of FePt nano-crystallites in amorphous Al2O3 matrix

2003 ◽  
Vol 48 (7) ◽  
pp. 915-920 ◽  
Author(s):  
K. Kaneko ◽  
S. Matsumura ◽  
K. Ikematsu ◽  
Y. Kato ◽  
Y. Tomokiyo ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Quantitative Electron Microscopy ◽  
Amorphous Al2o3 ◽  
Al2o3 Matrix

scholarly journals STUDY OF MITOCHONDRIA IN RAT LIVER

1962 ◽  
Vol 15 (3) ◽  
pp. 489-501 ◽  
Author(s):  
Gunter F. Bahr ◽  
Elmar Zeitler
Keyword(s):  
Electron Microscopy ◽  
Rat Liver ◽  
Linear Growth ◽  
Mitochondrial Fraction ◽  
The Other ◽  
Quantitative Electron Microscopy ◽  
Normal Rat ◽  
Log Normal ◽  
Log Normal Distribution ◽  
Particle Weight

The electron microscope has been used to determine the weight distribution of isolated subcellular particles from normal rat liver. The following results are reported: (1) There exist at least two well defined weight populations of subcellular particles; their respective median weights are 1.3 x 10-14 and 11 x 10-14 gm. The lighter fraction is considered to consist of lysosomes, the heavier of mitochondria. (2) The mitochondrial fraction shows a log-normal distribution of the particle weight. (3) By the introduction of morphologic criteria, the mitochondrial fraction is divided into two groups, one consisting of a spherical, the other of an oblong type of particle. The data found support the following concepts: (a) Mitochondria increase their weight from a certain size up by linear growth. (b) Mitochondria divide. The division is not necessarily symmetric; in all cases, however, one part of the division product is a spherical particle. It is felt that these results constitute a valuable demonstration of the general capabilities of quantitative electron microscopy and may stimulate many other useful applications of this technique in cytology, bacteriology, and virology.

scholarly journals Quantitative electron microscopy

Nature ◽  
1980 ◽  
Vol 283 (5747) ◽  
pp. 608-608
Author(s):  
V.E. Cosslett
Keyword(s):  
Electron Microscopy ◽  
Quantitative Electron Microscopy
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