Significance of vacuum technology in electron microscope.

the scanning electron microscope

it is only thirteen years since the scanning electron microscope has been available commercially. yet, even in this short period of time, this instrument has been a powerful tool in the investigation of topography, electrical and magnetic properties, crystal structure, cathodoluminescent characteristics etc. of solid specimens. today, this type of microscope has opened its place alongside the c...

Electron Microscope

An electron microscope study of liver cell in carbon tetrachloride intoxication, significance of "opaque area".

Electron microscope study on the rat liver cells of carbon tetrachloride poisoning has been reported. Observations have been made on the osmic fixed tissue sections obtained from the liver at early stages of poisoning, 5 to 22 hours after carbon tetrachloride oral administration, 0.25ml. per 100g. body weight. Special attention is paid on the appearance of electron dense area, opaque area, in c...

cellular behavior and scanning electron microscope evaluation of pro-root mta, root mta and modified mta on fibroblast l929

چکیده ندارد.

The electron microscope in palaeopathology.

INTRODUCTION Tim earliest palaeopathological studies were made in the eighteenth century and were concerned with the results of trauma and disease in fossil animals. In 1825 Granville made a careful macroscopic study of a Ptolemaic mummy and diagnosed ovarian dropsy: this was almost certainly an instance of cystadenocarcinoma of the ovary. Twenty-seven years later Johan Czermak, a distinguished...