Lien, Ruthruff, and Naylor (2014) recently reported that switching target search strategies (e.g., from identifying the letter that is uniquely colored [singleton search] to the letter that has a specific color [feature search] or vice versa) made the attentional system more vulnerable to capture by salient-but-irrelevant objects. In the present...
Burkholderia thailandensis is a soil-dwelling bacterium that has been proven to produce antimicrobial compounds. We are interested in understanding how B. thailandensis regulates production of these compounds and also hope to identify and characterize novel bacterial factors that possess antimicrobial activity. In our research, we use a variety of methods...
Children’s self-regulation and academic achievement are important factors in predicting school readiness and later academic outcomes. This study examined relationships between parental marital status and residential mobility on children’s academic achievement and self-regulation in kindergarten. Using a diverse sample of 131 kindergarten children, results indicated that the number of family...
Research Outline
•Amplify the coding region of the spike protein by PCR using primer flanking the S protein coding region
•Clone the coding region into PCR-TOPO 2.1 cloning vector
•Re-clone the coding region into PET6XHN-N vector
•Induce the spike protein expression in BL-21 cells
The sagebrush ecosystem, home to numerous plant and animal species including big sagebrush (Artemisia tridentata) and the endemic greater sage-grouse (Centrocercus urophasianus), has endured fragmentation and degradation of both quantity and quality due to the cumulative and synergistic relationships between an abundance of individual disturbances including grazing, invasive annuals and...
Children with physical disabilities typically participate in physical activities that are aligned with their function. As a result, children with physical disabilities engage in solitary activities more often, leaving little room to practice age appropriate social behaviors during physical activity with peers (Livingston et al, 2011). Emerging literature supports the...
We developed an integration-based line detection algorithm. Existing line detection methods such as the Hough Transformation (HT) and its variants are insensitive to image noise. The reason is that HT finds lines by calculating the gradient of the image and assumes that the region where the gradient is the steepest...
We developed an integration-based line detection algorithm. Existing line detection methods such as the Hough Transformation (HT) and its variants are insensitive to image noise. The reason is that HT finds lines by calculating the gradient of the image and assumes that the region where the gradient is the steepest...
- Collagen fibers are found in 25% of the whole body
protein content. They are highly adhesive to cells and
can be used as scaffold proteins that can promote cell
growth and be used to capture cells.
- In our lab, we use collagen to capture cancer cells in
order...
In this paper I present the results of Monte Carlo simulations for a soft sphere fluid with a Weeks-Chandler-Anderson (WCA) pair potential. The results are compared to Soft Fundamental Measure Theory (SFMT) results obtained by our research group. One of the research group’s goals was to show that our SFMT...
When a star dies in a supernova, its constituent particles are torn apart and a gaseous cloud of atoms remains. These atoms may eventually condense again into large bodies such as planets and stars. There are three main theories as to how this happens: classical, kinetic, and non-local thermodynamic equilibrium...
This study examines climatological influences, particularly that of snowpack, on tree growth and stable carbon isotope discrimination (Δ¹³C) from ~1980 to 2013 at two sites located in the upper reaches of the McKenzie River watershed of the Oregon Cascade Mountains. We tested the use of Δ¹³C values from latewood, corroborated...
Those scoring high in emotional intelligence typically can read the room well, understand relational connections, detect deception, and other various aspects of human interaction. But how do we learn to be emotionally intelligent? When it comes to interpersonal perception, it turns out to be difficult to learn from our mistakes...
This research specifically examines the collective motion of populations of MDA-MB-231 breast cancer cells under the influence of a chemo-attractant gradient. Their motion is compared to the mathematical model of a persistent random walk, measuring the persistence bias of the cells from their autocorrelation function and applying to the mean...
Many biological processes are regulated by the presence and movement of cellular Ca²⁺ ions. The concentration of Ca²⁺ in a cellular environment is regulated by IP₃ sensitive channels that lie on the surface of a cell’s endoplasmic reticulum. Little is known about the macroscopic effects of intracellular Ca²⁺ activity, so...
INTRODUCTION: Children with Autism Spectrum Disorder (ASD) have been shown to possess relative strengths in processing visual stimuli as opposed to verbal stimuli (Tissot & Evans, 2003). Therefore, instructional strategies that use visual means and presentations are recommended over the traditional (verbal) instruction. The effectiveness of video modeling has been...
Carbon nanotubes are the subject of intense interest in virtually every field, from medicine to nano-scale electrical components. Multi-walled nanotubes exhibit a strong nonlinear response to high-field strength terahertz radiation. This research uses terahertz pulses with field strength exceeding 1 MV/cm generated by means of optical rectification utilizing a lithium...
An important field of study within the exercise science realm lies in identifying risk factors for musculoskeletal injuries to inform injury prevention programs. One of the more serious injuries in sports, especially sports involving cutting and jumping, is sprain of the anterior cruciate ligament (ACL). Previous research has found that...
To model the behavior of the spring run Chinook salmon, we expanded the current dataset of salmon counts at the Winchester Dam, Winchester, Oregon, to include historical data from 1991 through 1997. These counts were used to identify Chinook salmon behavior that resulted in defining preferable water conditions during their...
An experimental apparatus is modified to allow measurements of the Seebeck coefficient and resistivity to be taken simultaneously. This apparatus is designed for bulk and thin film samples between temperatures of 10 K and 300 K. The apparatus is constructed such that these simultaneous measurements do not interfere with each...
Certificate of Need (CON) laws provide state level review of the need for additional health care resources in a given community. General CON regulations on medical services have been relatively well-documented. Little attention has been paid to state CON regulations for psychiatric and substance abuse care and their impacts on...
Interpersonally, power is normally associated with the constructs of dominance and status. However, the current investigation offers a conceptualization of power that has more to do with capturing the impact people have on others rather than it does having control over their fate. In this conceptualization, power is associated with...
Economic development and the eradication of poverty are complicated issues debated by experts. Current literature is polarized; offering extreme solutions that are easy to argue but that are ambiguous or lacking application. Some of the most prominent researchers choose popular stances on development perhaps due to selling power. Unfortunately, no...
IODP 351 cruise to the back arc region of the Izu Bonin contained cores with tephra layers intermitted within. These tephra layers under went electron micro probe analysis to gather major earth element abundances in order to put a parameter of a. where did the tephra originate from (volcanic source)...
Fractal visual hashes have the potential to replace traditional hexadecimal hashes for SSH applications with the goal of increasing user recognition of identities of remote computers. Rather than rely on human users manually comparing two hexadecimal hashes as part of SSH's public-private key encryption process, users would compare fractal images...
This thesis looks at the third harmonic voltage response of a small incandescent lightbulb. The third harmonic voltage, or 3 omega (3ω) voltage, arises from applying a 1ω sinusoidal voltage across a resistive material. The 3ω voltage carries with it information about the thermal conductivity of the material. A lock-in-amplifier...
Spiropyrans are a family of photosensitive molecules their hydrophobic properties when irradiated with light. Since spiropyran can be controlled by light, it can be used to regulate transport across membrane media. The ability to control the release of a substance onto a platform is promising in reducing the cost of...
The current model for gamma ray bursts (GRBs) assumes that internal shocks are responsible for the emission of gamma-rays. Internal shocks occur when the fast expanding shell collides with the slowly expanding shells. The light curve of a GRB depends on the initial state and the expanding speed of the...
GRMZM2G372877 was identified as a gene with potential function in the male gametophyte based on its strong expression in mature pollen relative to other maize tissues (Chettoor et al. 2014). Identification of a Ds insertion mutation in this gene from the Brutnell/Vollbrecht collection provided further support for this hypothesis, as...
Knowles Creek Research Review
This power point presentation was given to Northwest Fisheries Managers in November of 2013 during a conference at Oregon State University.
One of the largest ecosystems in the United States, sagebrush-steppe communities are currently in peril and threaten to impact at least 150 species of vertebrates (Hagen 2011). The decline of sagebrush habitat is exacerbated through an interaction of threats and feedbacks, including fire and invasive species, making the management of...
Based on recent findings, our hypothesis is that the inhibition of the Receptor tyrosine kinase-like orphan receptor 2 (ROR2) enzyme can lead to tumor suppression.
ROR2 are trans-membrane proteins that are part of the receptor tyrosine kinase (RTK) family. ROR2 is generally not expressed in most normal adult tissues and...
The scattering of optical rays by small spherical particles bears a strong resemblance to the
diffusion of fission neutrons in solid materials. This work explores the feasibility of
exploiting similarities between these two systems for the purposes of reactor component analysis, education, and outreach. After a brief overview of reactor-environment...
Soil respiration has been identified as one of the largest natural sources of CO₂ to the global carbon cycle. Small alterations in the magnitude of soil respiration can have potentially large effects on concentrations of atmospheric CO₂ , making the rate at which respiration occurs of great scientific interest (Martin...
A method for determining bandgap energy using diffuse reflection is presented. The method uses bifurcated fiber optic cables to measure the diffuse reflection of diffusely reflective materials. The absorption spectrum is extrapolated from the diffuse reflection spectrum and used to determine the bandgap of powdered materials. The theory of nonspecular...
During the 1980s the sales and use of all-terrain vehicles (ATVs) was on the rise. Many people used them for recreation, while others started using them on their ranch or farm for work-related purposes. As a result, morbidity and mortality rates also began to climb. It became apparent that the...
Bacteria found in clarified ovine rumen fluid are capable of degradation of high-energy explosives such as RDX (Hexahydro-1,3,-trinitro‐1,3,5‐triazine) and HMX (Octahydro‐1,3,5,7‐tetranitro‐1,3,5,7-tetrazocine).
The North American host of the introduced Asian isopod parasite, Orthione griffenis, is the burrowing Blue Mud Shrimp, Upogebia pugettensis. The shrimp are the predominant species in the Yaquina Bay estuary intertidal mudflats, and are essential ecosystem engineers. The parasite effectively castrates the shrimp host without causing mortality which allows...
The idea for this research projected stemmed from research I conducted during my Economics 439: Public Policy course. This research project examines the idea of Voter Identification Laws and Regulations and their effect on voter turnout and participation in the United States of America. I previously found that economists studied...
Background: The Wave~Ripples for Change: Obesity Prevention in High-School Soccer Players research project is a 5-Y USDA funded project focused on building healthy nutrition, physical activity and life skills for healthy weight maintenance. The intervention includes providing face-to-face sport nutrition, physical activity and life- skills lessons, assessments of body composition,...
Aging is known to be affected by many factors such as nutrition and exercise, and more studies are needed to understand the mechanisms of aging. Aging in flies shows many similarities with humans; therefore we study mechanisms of aging in flies as a model organism. Studying aging in flies requires...
Children with disabilities engage in fewer social interactions than their typically developing peers (McConkey et al., 2013). The lack of social invitations may lead to many negative outcomes in the future, including poor academic performance and aggressive-disruptive behavior (Odom, 2006). Preschool-aged children (3-5 years old) without disabilities are aware that...
Vibrio cholerae is a gram-negative gammaproteobacteria, well
known for causing the watery-diarrheal disease Cholera. V. cholerae is
endemic to the marine and freshwater ecosystems of India and
surrounding aquatic environments within that region. Primary
reservoirs include brackish water and estuaries. The primary symptom
is rapid dehydration due to watery diarrhea....
Background: Even with numerous successful Trap-Neuter-Release programs, feral cat populations continue to grow. Our laboratory is interested in determining if an underlying biological cause exists for the exuberant reproductive success in this once domestic subspecies. An earlier age for developing reproductive capacity (onset of spermatogenesis in males) may be one...
This study aimed to investigate if diversity exists among faculty members in (20) twenty universities in sociology, political science, and chemistry departments situated in a variety of cities on the American West Coast. By conducting a content analysis composed of official university websites and individual Curriculum Vitae, each listed faculty...
Phospholipase C enzymes hydrolyze the rare membrane lipids phosphatidylinositol-4-phosphate (PIP) and phosphatidylinositol-4,5-bisphosphate (PIP2) PIP into inositol triphosphate (IP3) and diacylglycerol (DAG). Phospholipase C enzymes of the β subtype (PLC-β) function specifically in the signal transduction pathways regulated by Gαq-coupled seven transmembrane receptors. These signaling pathways link plasma membrane receptor activation...
Seasonal Affective Disorder (SAD) is a mood disorder that is characterized by depressive symptoms that onset and remit at the same times each year. Whereas few people (about 1%) experience problems severe enough to be labeled SAD, many people (estimates range from 30%-90%) may experience mild to moderate changes in...
A better understanding of the distribution and spawning behavior of Crangon shrimp and their relationship with their predators, including the green sturgeon, Acipenser medirostris, is an important step toward the larger goal to understand food webs of the nearshore continental shelf of the northeastern Pacific. Here, I examined how the...
The preceding empirical research examines the traditional and evolutionary research surrounding youth deviance. Deviance is routinely discussed as an adverse impact in a plethora of theories and it is imperative to further develop the knowledge of deviance as society progresses. In this report, the utilized sample group approximately (n=13583) was...
Endophytes are bacteria or fungi that live within a host plant. The plant host provides a home for endophytes, and in return endophytes produce primary and secondary metabolites, of which many of the secondary metabolites possess biological activities. When microorganisms are grown under various media conditions, they produce different natural...
As juvenile salmon migrate from freshwater into saltwater, physiological changes must occur to allow fish to osmoregulate in the marine environment. Juvenile spring Chinook salmon migrate to the ocean at different time periods, most notably in the fall (August – November; i.e. fall smolts) and spring (February – May; i.e....
Pedometers have become a frequently used tool to measure physical activity. The accuracy of pedometers has been an interest of many researchers given the popularity of the tool. When, pedometers are employed, there are many potential sources of error, including missing data. Because previous studies indicated that the amount of...
For many years, scientists worldwide have been using glacial ice to reconstruct and study Earth’s past climates. While the most continuous records we have are from sites near both poles, there is also mid-latitude perennial ice in the form of mountain glaciers and cave ice. Very little is known about...
Symbiotic relationships between cnidarians and dinoflagellates within the genus
Symbiodinium are critically important for the success of coral reefs. These symbionts
provide their hosts with photosynthetically-fixed carbon in exchange for nutrients
and shelter. Symbiodinium is a phylogenetically diverse genus that is often typed by
sequencing the ribosomal internal transcribed spacer...
Fusarium solani is a chronic disease that causes root rot which affects bean production worldwide. Recently, a QTL map was generated which identified several SNPs which were found to be associated with resistance to the pathogen. To be useful in a breeding program, INDELs must be identified which co-seggregate with...
The purpose of this project is to study which methyl-accepting chemotaxis proteins (MCPs) are related to chemotaxis of Vibrio cholerae. 44 MCP mutant strains were tested in seven different chemoattractants and the resulting swarm circle size was compared to that of C6706 lac-Z wildtype. Several genes were identified that resulted...
Cisplatin (CDDP) is a highly active platinum-containing chemotherapeutic agent for use against solid tumors, including ovarian. However, like most antitumor agents, CDDP use is accompanied by non-tumor tissue toxicities leading to unwanted side effects, including neuropathy. To date, the mechanism(s) for these side effects are undefined. However, the clinical features...
This gamma irradiation study was conducted to establish an LD50 of the hop (Humulus lupulus L.) cultivar Cascade . The overall, long term goal is to generate replacement hop cultivars by inducing minor but significant DNA alterations with gamma radiation to improve agronomic quality without changing the brewing profile. The...
The synergetic interplay between the removal of saturated methyl esters and the addition of deoxygenated fatty acids on depressing the cloud point temperature of biodiesel was investigated in this study. Canola biodiesel was produced in batch as a standard with a cloud point of 1.37 +/- 6.3°C. Saturated methyl esters...