Using spatial autocorrelation analysis, we
examined the within-population genetic structure of
Rhizopogon vinicolor and R. vesiculosus, two hypogeous
ectomycorrhizal (EM) species that are sympatric
sister taxa known to differ in their clonal structure.
We collected 121 sporocarps and 482 tuberculate EM
of both species from a 20 ha forest stand...
Multiple successional sequences have been observed following disturbance in communities on marine hard substrata. Observations of the turf-forming alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae), suggest that I. cornucopiae may assume its dominance by its ability to vegetatively pre-empt space. High limpet densities in the natural community, suggest that I....
The term "interaction" in evolutionary biology and ecology
describes the relationships among variables in two classes of causal
models. In the first, "interaction" refers to the influence of a
single putatively causal variable on a variable of interest. In the
second class of models, the term applies when a third...
This thesis presents basic studies, including structural, optical and transport measurements, on novel chalcogenide powders and single crystals. BiCuOSe crystals have been synthesized for the first time. The crystal structure of BiCuOSe has been refined and the optical band gap has been measured to be 0.83eV. Crystal structure refinements of...
This report presents an assessment of the wave power potential of the Oregon coast and how much of that power can actually be converted into useful energy, based on analysis of the conversion efficiency of the two most advanced and probable technologies: oscillating water columns (OWC) and buoys. The actual...
The present study examined fathers' and mothers' attitudes
toward fathering and fathers' involvement with their infant sons
and daughters. Subjects included 42 pairs of parents with infants
from upper and middle socioeconomic class families. All subjects
were of the Caucasian race. The Attitudes Toward Fathering Scale
and the Father Behavioral...
The most frequent cause of insufficient acid production during
fermentation of dairy products is bacteriophage infection of lactic
starter cultures. Previously, efforts to minimize this problem have
dealt primarily with the host range relationships of the viruses and
susceptibility patterns of the lactic streptococci. This study was
undertaken to characterize...
Hop derived bitter compounds, including alpha-acids, reduced and non-reduced iso-alpha-acids, were evaluated for their contribution to peak bitter intensity in lager beer. Alpha-acids are the precursors to the major bittering components in beer (iso-alpha-acids). Typically, alpha-acids do not survive the brewing process, but if a product is dry-hopped, they may...
The study's goal was to develop and initially validate the Food
Fantasies Questionnaire, a self-report therapeutic and research
instrument which assesses the occurrence and content of highly
irrational food cognitions (fantasies) common to eating disorders in
relation to seven theoretically derived factors characterisic of the
disorders: fear, anxiety, revulsion, pleasure,...