My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
In the past two decades, occurrences of summertime upwelling-driven low dissolved oxygen (DO) events, or hypoxia, have increased along the northeast Pacific coast. If hypoxic events are severe enough to cause marine species mortality, the areas affected are often called "dead zones." In 2002 and again in 2006, the events...
This thesis is a study of the effects of social media and the influence it has over people and their wellbeing. The study within the thesis manipulates the social media habits of Oregon State students, and looks at the changes in their wellbeing. Throughout the background research the evidence supports...
Recent years have been marked with increasing rates of corporate scandals, environmental disasters, and unfair labor practices, drawing attention to the importance of corporate social responsibility (CSR). Despite increasing efforts in CSR, past research has shown increased levels of mistrust and skepticism from consumers towards business. Furthermore, the very issues...
The performance of a multiple stage crosscurrent tower packed
with Pall rings was characterized with and without a recycle loop on
the gas stream. The column used 12 baffles. The absorption system
studied was the transfer of oxygen from an oxygen-enriched air stream
into a water stream which is a...
Complete, identified, developmental series of larval cottids
Artedius fenestralis, A. creaseri, A. meanyi, Oligocottus snyderi,
Clinocottus embryum, and C. globiceps are described for the first
time. In addition, redescriptions of four species, Artedius harringtoni,
A. lateralis, Oligocottus maculosus, and Clinocottus acuticeps
are included that provide new and comparative information on...
The use of data extracted from particle image velocimetry (PIV) along with vector and tensor visualization techniques provides a valuable tool for understanding a complex flow field. By studying a simple geometric structure such as a cylinder under a simple transient waveform, fundamental mechanisms of wake development under solitary wave...
The purpose of this study was to identify the factors that influence
the use and understanding of unit pricing. Furthermore, a
comparison between a city with a mandated unit pricing program
(Seattle, Washington) and a city with a voluntary unit pricing program
(Portland, Oregon) was made. The intent was to...
Several experiments were conducted to investigate the effect of
dietary factors such as amino acids, B vitamins, butylated hydroxyanisole
(BHA) and phenobarbital on pyrrolizidine alkaloid toxicosis
in rats and horses. The influence of St. John's wort, bracken,
comfrey, and alfalfa on tansy ragwort toxicity was also examined.
Effects of dietary...
Populations of breeding birds and forest composition and structure were examined in preconimercially thinned and unthinned ponderosa pine (Pinus ponderosa Laws.) stands in east-central Washington. Stands were composed of predominantly ponderosa pine with a multi-aged structure made up of small even-aged clumps. Thinning reduced the
density and foliage volume of...
