In this study, I test for tacit collusion in retail gasoline markets by testing for sticky downward pricing and price leadership. Using an extensive dataset consisting of twenty-five gasoline markets located in the greater Willamette Valley region of Oregon, I find evidence of sticky downward pricing in every market. I...
Benton County, Oregon has been experiencing relatively high growth and
development during the last five years. This new growth has put a strain on urban and
rural development in the county. To cope with this growth, comprehensive plans,
zoning, and many other planning issues must be assessed and revised according...
Eight foodborne pathogenic and spoilage Gram-positive bacteria were
evaluated for their spontaneous resistance frequencies to the peptide
antimicrobial nisin. In brain heart infusion (BHI) medium, nisin resistance
frequencies were in the range of l06 to l08 when exposed to nisin at
concentrations 2 to 4 times the minimal inhibitory concentrations....
The efficiencies of wet sieving/sucrose
centrifugation (WS/SC) recovery of Pratylenchus penetrans
(59 %), Paratylenchus sp., (80 %), and Criconemella
xenoplax (66 %) were established. Baermann funnels (BF)
recovered significantly more P. penetrans (p = 0.01) and
significantly less (p = 0.01) C. xenoplax than did WS/SC.
While densities of P....
Fluctuations in population density of Pratylenchus sp.,
Trichodorus sp., and Xiphinema americanum s. 1. in three blueberry
fields were determined monthly for one year. Pratylenchus densities
were greatest in August and least in October. Three distinct
periods of population growth occurred; during January, April, and
between June and August. Trichodorus...