Programming parallel machines has been a difficult and unrewarding task. The short lifespan
of parallel machines and their incompatibility have made it difficult to utilize them. Our goal
here is to create an environment for parallel computing which allows users to take advantage
of parallel computers without writing parallel programs....
In the Willamette Valley of Oregon, a combination of the need for rotational crops and an increased desire for biofuel production created interest in planting Brassica napus (canola). However, questions were raised arisen over the potential damage canola production could have on the preexisting Brassica vegetable seed industry. To address...
Density dependence is an ecological concept concerning the mechanisms of change in the size of a population. The inability to census ecological populations confounds approaches to identify and quantify the level of density dependence. Statistical tests which ignore the presence of measurement error tend to result in misspeci fied type...
Numerous populations of salmon and trout undergo extensive migrations, migrating from freshwater to the sea and throughout ocean basins. Years later they return to their natal streams with remarkable accuracy and precision. The outward migration is accomplished without the benefit of following experienced migrants or prior individual experience. Evidence suggests...
The pathogen Vibrio cholerae uses cations as a primary currency of virulence
and environmental persistence, using gradients of those cations to move, acquire
nutrients, and control virulence gene expression. An understanding of the overlapping
roles of bioenergetics and chemotaxis in the virulence and environmental survival of
V. cholerae issues from...
Gamma irradiation inactivation kinetics were studied using
fifteen organisms naturally contaminating seafoods. Survival curves
for seven Salmonella, three Shigella, two Streptococcus species and
a Staphylococcus, Escherichia and Proteus species were determined
using Hartsell's broth and fresh oysters. Also, the Shigella species
and one species of Streptococcus, Escherichia and Proteus were...
Xylindein is an organic pigment derived from Chlorociboria aeruginascens and C. aeruginosa fungi that has
shown promise as an organic semiconductor. Preliminary estimates of charge carrier mobilities (CCMs) on
the order of 0.1 cm2/Vs were calculated from early tests on xylindein thin films, and photocurrents were
also observed under laser...
The Permian rocks near Quinn River Crossing, Humboldt County,
Nevada, crop out as a north-trending block-faulted ridge and consist
of more than 2600 feet of middle Permian fossiliferous limestone.
About 1000 feet of unfossiliferous cherty shales, sandstones, and
conglomerates are associated with the limestone and are assumed also