A need exists to develop a high speed dynamic tow carriage used to
motivate hydrodynamic specimens through a fluid environment. It is
desired to simulate high Reynolds number unsteady flow about the
specimen by towing the specimen through the fluid. The fluid
environment is to be provided by the existing...
The atmospheric sodium daytime abundance was measured for
Corvallis, Oregon, using direct absorption of sunlight by atmospheric
sodium atoms, as observed with an optical waveguide spectrum analyzer.
The disadvantage of the spectrum analyzer is that it can't resolve the
sodium D-lines (Its resolving power is 0.5 nm, which is approximately...
Studies were conducted from 1962 to 1966 to investigate the
effectiveness of several practices in manipulating medusahead
(Taeniatherum asperum (Sim. ) Nevski) infested and/or dominated
ecosystems by releasing competition in favor of perennial grasses.
Several herbicide treatments were evaluated for selective
control of medusahead and cheatgrass (Bromus tectorum L. )...
Home range and habitat use by pileated woodpeckers
(Dryocopus pileatus) were studied in the Coast Ranges of western
Oregon. Radio-telemetry was used to determine home ranges of 11
woodpeckers and habitat use of 14 woodpeckers after young had
fledged during summers from 1982 to 1985. Home range size for
individual...
Despite relatively mild weather, black bears (Ursus americanus)
in southwestern Washington entered dens and remained for an average
of 126 days. Bears entered their dens during a 5-week period which
began on 21 October. A significant difference (P < 0.05) was found
among the average dates of den entrance of...
The equations of motion of a suspended, inextensible cable in
the absence of damping are studied. A method is developed and
illustrated for determining the frequencies and mode shapes for small
oscillations about the equilibrium configuration.
With the introduction of a new variable, the fourth order equation
governing tangential displacement...