The cross section morphology and skin-core structure of PAN fiber in wet-spinning are analyzed by the means of electron probe microanalyser (EPMA) and scanning electron microscope (SEM).
For every old storm-stricken tree, there is one or more in all the glory of prime; and for each of these many young trees and crowds of exuberant saplings.
Where today parents save first curls as a souvenir of babyhood, in the 19th century it became fashionable to work the hair of a dead beloved into a locket, bracelet or even a ring.
No one looked on you with pity or had compassion enough to do any of these things for you. Rather, you were thrown out into the open field, for on the day you were born you were despised.