Equipment for strip-till planting is under development in wheat-fallow
rotations in the Columbia Basin of Oregon. This involves the
absence of tillage during the fallow season. At planting time, the
strip-till planter creates a narrow band into which the wheat seed is
placed. The area between the rows is undisturbed...
A growing number of nonmetropolitan communities have chosen to pursue
nontraditional avenues for economic development including the promotion of the
nonmetropolitan area to older adults who may choose to migrate after retirement. The
purpose of this study was to help community leaders in nonmetropolitan areas make
informed decisions if they...
In the mid 1930's the Diesel engine, which formerly was used only as a large, low-speed machine, was developed into a smaller
high-speed engine for use in trucks, busses, and tractors. Along
with these changes in mechanical design came many problems, of
which a major one was lubrication. Because ordinary...
Observations between 20 and 40 m depth were made with a towed thermostor
chain in the North Pacific. Despite the rapid vertical variation
of buoyancy frequency, spectra of isotherm displacements are in fair
agreement with other observations and with the Garrett-Munk model. The
spectra show evidence of a shoulder and...