A short history is given of cathode-ray tubes, from the
earliest laboratory tubes available during the early 1900's through
present day high performance tubes. Special attention is paid to
the development of post-deflection acceleration types especially
band-type PDA tubes and an improvement on that type known as the
helix-type PDA...
The purpose of this study was twofold: first, to examine the
choice of living setting of university sophomore women in relation to
their value preferences and in relation to selected settings, socioeconomic
background, and circumstance factors surrounding their
choices. The secondary aim of the study was to investigate how the...
While the genus Cytophaga has been defined and classified on
a morphological basis, knowledge of fresh water members of this
group of myxobacteria is scanty. In the present study cultural and
morphological characteristics were investigated in an attempt to
classify a group of fresh water cytophaga.
Microscopic examination revealed all...
Washington and Oregon became important states in the production of apples and pears in the early 1900's. During these beginning
stages, wooden boxes were used for shipping both apples and pears.
Apple containerization has progressed through several stages. Today,
the most common container for shipment of apples out of the...
An attempt was made to determine the justifiable expenditure
for the protection of tangible timber values from fire. Upon finding
the data inadequate for such a determination, the decision was
reached to continue the analysis, determine the data deficiencies,
and then make recommendations that would enable these data deficiencies
to...