This study was conducted to investigate the differences of the
profile distribution of free iron and free manganese and the reduction-oxidation changes in soils of the Willamette drainage sequence.
Based on the results of the chemical analyses, free iron and
free manganese distributions in these soils were governed to a...
The study measured and compared the philosophies of education of OSU graduates who are experienced teachers of vocational education and undergraduate vocational teacher trainees on an essentialist-progressive scale at OSU. The objectives of this study were to (1) determine if experienced teachers of vocational education and undergraduate vocational teacher trainees...
Field-plot experiments and pot culture techniques were used to
investigate reported Cu deficiency in certain Oregon organic soils.
Field experiments were established in 1973 and 1974 on an acid peat
soil and two alkaline muck soils near Klamath Falls, The effect of
rates of from 0 to 45 kg Cu/ha...
A laboratory study of anaerobically digested sewage
sludge was performed to measure equilibrium constants for
ammonia in the sludge. Measured constants describing the
solution and dissociation of ammonia in sludge were compared
to theoretical constants obtained from thermodynamic data.
No significant difference was found between these two sets
of constants....
A Willamette sandy shot loam was treated with ZnC1₂, CdC1₂, or sewage sludge to determine the chemical fate of added Cd and Zn in the soil and their influence on the growth of corn and wheat seedlings. Cadmium was added as CdC1₂ at rates of 0, 5, 20, or 80...
Productivity gains in the manufacturing sector have generally been
credited to investments in production facilities that supplemented or
replaced manual labor. Insertion of circuit boards is a key activity in
the electronics industry. Improvements in productivity of circuit board
manufacture may be achieved by replacing manual component insertion with
automatic...