Better Bones and Balance (BBB) is a community-based exercise program to improve bone health and reduce fall risk among older adults. Prior research has shown that when the program is delivered by researchers under controlled conditions, participants improved strength and balance, and maintained bone mineral density (BMD) at the hip....
New acceptor-type graphite intercalation compounds (GICs) containing perfluoroalkyl anions have been synthesized by using both chemical and electrochemical methods and characterized by elemental and thermogravimetric analyses. Investigation into these graphite intercalation compounds can provide novel materials and a detailed understanding of their properties.
GICs of composition Cx[FB(C₂F₅)₃]·δF are prepared for...
The following three essays explore the use of the directional output distance function (Chambers et al., 1996), an economic model originally developed to measure efficiency and productivity for multi-input and multi-output production processes, to assess performance for multi-attributed environmental processes.
The first essay illustrates the use of the directional output...
In this dissertation, I posited the need to understand how an invented community (the Society for Creative Anachronism) constructs symbolic meaning in material objects and value systems. Using ethnographic methods, I focused on the Knights and their regalia as this is the most widely accepted material symbolism. People go to...
Many bridges along the Gulf Coast of the United States were damaged by recent hurricanes, and many more are susceptible to similar damage. This research examines performance of common anchorage connection details for AASHTO Type III prestressed concrete girders used by some transportation agencies. Full-scale specimens were fabricated and tested...
Background: Breastfeeding has many benefits but many new mothers find difficulties when
trying to breastfeed. This is a program evaluation of Baby Connection a feeding program for the
first year. Baby Connection is a volunteer program in Lane County, Oregon. Methods: Records
were analyzed during the first 15 months of...
Low Reynolds number airfoils have become of interest recently for applications on Micro-air Vehicles (MAVs). Airfoils at low Reynolds numbers and high angles of attack are known to be unstable due to low lift to drag ratios. This study investigates the effect of a movable leading edge flap on the...
This study considered collision data for Seattle, Washington and Portland, Oregon
in order to determine whether or not red light cameras are effective in reducing red light
running collisions. Red light running is extremely dangerous and is a leading cause of
urban automobile collisions in the United States. Red light...
The world is currently using an unsustainable system of meeting its transportation
needs with oil. This system is taking a toll on the world environment and on global politics.
The physical availability of oil is the system’s most immediate problem and will most likely
bring about a transition away from...
The Professional Science Master’s program requires all graduates to complete an internship and prepare a descriptive report in lieu of a master’s thesis. In 2009 I concluded a three-month full-time internship with the Institute for Natural Resources (INR). Oregon Explorer (OE) is a collaborative effort between INR and Oregon State...
Comparative investigations based on volcanic morphology suffer from the lack of a large terrestrial baseline for comparison. To fill this gap, the Lava Flow Morphology Database (LAMDA) was proposed as a GIS based central clearinghouse for remote and field investigations of volcanic morphology. This study presents an analysis of LAMDA’S...
In wood-based composites, the glue-line (interface) between wood-strands affects the stress transfer from one member to the next. The glue-line properties determine the rate of load transfer between phases and these properties depend on wood species, surface preparation, glue properties, glue penetration into wood cells, and moisture content of the...
A critical link is missing between food production and food consumption. This gap can be overcome by encouraging the production of staple food crops and emphasizing regional and community consumption of locally produced food. In order to re-establish local food security in the Willamette Valley, it is imperative that essential...
This publication reviews the growth stages of grapes. For each growth stage (or group of growth stages), the document lists the more effective pesticides used to control insects and disease, their rates, and application timing for Oregon grape growers. It also covers the effectiveness of various fungicides for control of...
Vertebrates communicate with one another and coordinate intraspecific reproduction by using a variety of sexually dimorphic signals, such as plumage, ornaments, sounds, and/or scents. These sexual dimorphisms are maintained by physiological factors, typically sex-specific hormones (though see Chapter 3 for an exception). The purpose of the research in this dissertation...
The pharmacy practices in Ecuador and the United States are different on three different levels: culturally, educationally and governmentally. Research was conducted to compare and contrast the differences of community pharmacy practices between the United States and Ecuador. Eight different pharmacists in Quito were interviewed with a series of questions....
Variable-retention harvesting was proposed to reduce loss of biodiversity and ecosystem processes associated with late-seral Douglas-fir (Pseudotsuga menziesii) forests in the Pacific Northwest. The Demonstration of Ecosystem Management Options experiment was established to test this hypothesis. Analysis presents various challenges to drawing statistical inferences about treatment effects. This dissertation explored...
Peroxiredoxins (Prxs) are dominant peroxide-reducing enzymes with two important roles: they protect all organisms from oxidative damage induced by peroxides, and in eukaryotes, they participate in hydrogen peroxide signaling pathways. This dissertation presents studies aimed at the biophysical characterization of select Prxs and a Prx reductase to elucidate their structure-function...
For cell-like upper semicontinuous(usc) decompositions G of finite dimensional manifolds M, the decomposition space M/G turns out to be an ANR provided M/G is finite dimensional ([Dav07], page 129 ). Furthermore, if M/G is finite dimensional and has the
Disjoint Disks Property (DDP), then M/G is homeomorphic to M ([Dav07],...
The process of de-excitation of the actinides is a very important question in both pure and applied science. In this dissertation the process was studied using the neutrons emitted in coincidence with fission induced by the bombardment of ²³⁸U with 14.85 MeV deuterons. Neutrons can be emitted at multiple stages...
Cytoplasmic dynein is an ATP-dependent, microtubule-based molecular motor involved in the positioning and trafficking of cellular cargo. The cargo binding sub-domain of dynein contains the natively disordered intermediate chain (IC) and the homodimeric light chains (Tctex1, LC8 and LC7). The structure and stoichiometry of this complex, how the light chains...
Recent advances in wireless technologies have helped the proliferation of wireless devices, ranging from hand-held devices such as cellular phones to more powerful mobile computing platforms as such laptops [1]. Along with that, the end users’
applications running on these devices, ranging from text message to multimedia applications such as...
Marine renewable energy promises to assist in the effort to reduce
carbon emissions worldwide. As with any large-scale development in the marine
environment, however, it comes with uncertainty about potential environmental
impacts, most of which have not been adequately evaluated—in part because many of
the devices have yet to be...
The boom of the microcar market in India has lead to domestic and international firms taking advantage of this growth. Many places including India are experiencing this trend, but due to differences in cultures, preferences and values, the United States is not. Companies that want to venture into the microcar...
Formaldehyde-based adhesives such as urea-formaldehyde (UF), phenol-formaldehyde (PF) are widely applied in wood-based composite industry. However, these adhesives are all petrochemical-based and could not sustain in a long term due to a limited reserve of oil and natural gas. Moreover, these adhesives emit carcinogenic formaldehyde in the production or use...
Limnanthes floccosa ssp. floccosa and L. floccosa ssp. grandiflora are two of five subspecies of Limnanthes floccosa endemic to vernal pools in southern Oregon and northern California. Three seasons of monitoring natural populations have quantified that L. floccosa ssp. grandiflora is always found growing sympatrically with L. floccosa ssp. floccosa...
The copepod Calanus finmarchicus is the most important and biomass dominant mesozooplankter in the temperate-boreal North Atlantic. C. finmarchicus has an overwintering phase, termed diapause, during which it descends to great depths (300-2000m) and is metabolically quiescent for up to ten months. Changes in the currents at depth due to...
Polycyclic aromatic hydrocarbons (PAHs) with a molecular weight (MW) of 302
and oxygenated-PAHs (OPAHs) have demonstrated toxicity beyond that of
frequently monitored and known carcinogenic PAHs. Airborne particulate matter
(PM) was characterized for MW 302 isomers to evaluate risk and air quality
indices and OPAHs in order to fill data...
This research details laboratory assessment of bacterial hydrophobicity, variations in bacterial adhesion properties with growth and extended starvation as well as extension of this assay to colloidal hydrophobicity measurement. Hydrophobicity is an integral component of surface interactions and has been studied extensively for its role in a number of engineering...
Distractions and interruptions are common occurrences in an operating room (OR), but little is known about their effects on surgical task performance. Based on human factors research, it was hypothesized that realistic distractions and interruptions in an OR would adversely impact surgical task performance. Because of the concern of patient...
The Port of Portland is currently looking for consultants to develop designs for the Troutdale Reynolds Industrial Park (TRIP). CA3D Consultants provides experience from many engineering disciplines and would meet the client’s expectations. Our proposal includes the extension of Swigert Way to Graham Road, construction of office/manufacturing building space, mitigation...
Written for PSY 482.
Throughout the history of psychotherapy, exposure and response (ritual) prevention (ERP) has widely been considered the most effective treatment for patients who suffer from obsessive-compulsive disorder (OCD) (Clark, 2005). Through the utilization of fear hierarchies that aim to desensitize feelings of anxiety and dread, ERP’s empirically...
Given the growing human security implications resulting from the high rates of change in social-ecological systems, the general question motivating this research is: how can the traditional security establishment respond to rising non-traditional threats? This question comes from the ongoing debate of whether military resources should be used in some...
The entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana are commercially available as microbial control agents for the black vine weevil, Otiorhynchus sulcatus (F.) (Coleoptera: Curculionidae), the key root-feeding insect pest in Pacific Northwest small fruits and ornamentals. Understanding habitat selection is critical to improve the efficacy, persistence and cost of...
Enhanced pool boiling critical heat fluxes (CHF) at reduced wall superheat on nanostructured
substrates are reported. Nanostructured surfaces were realized using a low temperature process,
microreactor-assisted-nanomaterial-deposition. Using this technique we deposited ZnO nanostructures
on Al and Cu substrates. We observed pool boiling CHF of 82.5 W/cm2 with water as
fluid...
The effects of a school-based social-emotional and character development program, Positive Action, on the developmental trajectory of character development was evaluated using data from three randomized trials. Results come from 1) 4-years of data from elementary children in 20 Hawai`i schools, 2) 3-years of data from elementary children in 14...
Large numbers of reinforced concrete deck girder bridges that were constructed during the
interstate system expansion of the 1950s have developed diagonal cracking in the stems.
Compared to the present AASHTO-LRFD standards, the provisions of the 1950s allowed
for higher shear stress in the concrete, thus reducing the amount of...
Aerosols are tiny particles that serve as nuclei for cloud droplet and ice crystal formation. Increases in aerosol concentration lead to clouds with smaller but more numerous droplets. Some recent studies have found evidence that ice crystal size in deep convective clouds is also reduced by elevated aerosol concentrations. In...
Farmers rely almost exclusively on the imported European honeybee (Apis mellifera L.) for fruit and vegetable crop pollination services. The recent decline in honeybee health has underscored the danger of relying on a single species to provide vital services. Increasing pollinator biodiversity with native bees may provide biological insurance against...
Malaria is the world’s most important parasitic infectious disease, and is a major cause of mortality and morbidity in many developing countries. In this dissertation I study the interaction of malaria and economic development at both the macro- and micro-economic levels.
In the first essay I examine the economic impact...
The western spotted cucumber beetle (Diabrotica undecimpunctata
undecimpunctata) and the western striped cucumber beetle (Acalymma trivittatum) are
pests of many crops, including vegetable, fruit, and nursery crops. Pesticides are
commonly used to control this pest. Trap and kill technologies are under development as
use in an alternative control for cucumber...