Guide to the Linfield College Photograph Collection

This collection contains photographs, glass lantern and plastic slides, and film negatives depicting the many-layered facets of life at Linfield College on its McMinnville and Portland campuses. The photography features (without limit to): students, faculty and staff, commencements, guest speakers and performers, buildings, activities and clubs, athletics, the arts (studio and performance), residence life, social, and study scenes

M&Ms: Mentors and Mentees

This project focused on the challenge of meeting the needs of at-risk students in an elementary school setting. In response to the literature, we designed and implemented a school-based mentoring program. This project examined whether a face-to-face mentoring program in this school with these students could meet three goals: provide students regular contact with a caring adult, increase student confidence in themselves or their environments, and reduce behavior infractions. These students, ranging from kindergarten to fifth grade, were identified for social-emotional and/or behavior issues by their teachers, administration, or guidance counselor. School employees served as the pool for mentors, and mentors received training. The pairs met regularly during the school day to establish a trusting relationship. They talked, ate lunch, played games, and/or engaged in other activities. A mixed methods research design was used to collect data. The study found that the program positively impacted mentees in relation to confidence, attitude, intrapersonal skills, interpersonal abilities, and behavior. Furthermore, this study aimed to inform effective strategies for improvement of the program moving forward

Aerosol chemical composition in Asian continental outflow during the TRACE-P campaign: Comparison with PEM-West B

Aerosol associated soluble ions and the radionuclide tracers 7Be and 210Pb were quantified in 414 filter samples collected in spring 2001 from the DC-8 during the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign. Binning the data into near Asia (flights from Hong Kong and Japan) and remote Pacific (all other flights) revealed large enhancements of NO3−, SO4=, C2O4=, NH4+, K+, Mg2+, and Ca2+ near Asia. The boundary layer and lower troposphere were most strongly influenced by continental outflow, and the largest enhancements were seen in Ca2+ (a dust tracer) and NO3− (reflecting uptake of HNO3 onto the dust). Comparing the TRACE P near Asia bin with earlier results from the same region during PEM-West B (in 1994) shows at least twofold enhancements during TRACE P in most of the ions listed above. Calcium and NO3− were most enhanced in this comparison as well (more than sevenfold higher in the boundary layer and threefold higher in the lower troposphere). Independent estimation of Asian emissions of gaseous precursors of the aerosol-associated ions suggest only small changes between the two missions, and precipitation fields do not suggest any significant difference in the efficiency of the primary sink, precipitation scavenging. It thus appears that with the possible exception of dust, the enhancements of aerosol-associated species during TRACE P cannot be explained by stronger sources or weaker sinks. We argue that the enhancements largely reflect the fact that TRACE P focused on characterizing Asian outflow, and thus the DC-8 was more frequently flown into regions that were influenced by well-organized flow off the continent

Impact of multiscale dynamical processes and mixing on the chemical composition of the upper troposphere and lower stratosphere during the Intercontinental Chemical Transport Experiment–North America

We use high-frequency in situ observations made from the DC8 to examine fine-scale tracer structure and correlations observed in the upper troposphere and lower stratosphere during INTEX-NA. Two flights of the NASA DC-8 are compared and contrasted. Chemical data from the DC-8 flight on 18 July show evidence for interleaving and mixing of polluted and stratospheric air masses in the vicinity of the subtropical jet in the upper troposphere, while on 2 August the DC-8 flew through a polluted upper troposphere and a lowermost stratosphere that showed evidence of an intrusion of polluted air. We compare data from both flights with RAQMS 3-D global meteorological and chemical model fields to establish dynamical context and to diagnose processes regulating the degree of mixing on each day. We also use trajectory mapping of the model fields to show that filamentary structure due to upstream strain deformation contributes to tracer variability observed in the upper troposphere. An Eulerian measure of strain versus rotation in the large-scale flow is found useful in predicting filamentary structure in the vicinity of the jet. Higher-frequency (6–24 km) tracer variability is attributed to buoyancy wave oscillations in the vicinity of the jet, whose turbulent dissipation leads to efficient mixing across tracer gradients

The effect of thiol reagents on GABA transport in rat brain synaptosomes

AbstractThe nature of γ-aminobutyric acid (GABA) transport has been investigated in preparations of rat brain synaptosomes using a number of thiol reagents with varying membrane permeabilities. N-Ethylmaleimide, p-chloromercuribenzoate and p-chloromercuriphenylsulfonate effectively inhibited GABA transport in both directions (i.e., uptake and release) whereas 5,5′ -dithiobis-2-nitrobenzoate, mercaptopropionate and N-nitroethylenediamine were much less effective, or ineffective, even at millimolar concentrations. For each of the thiol reagents, the inhibition profile for GABA uptake was approximately the same as that for its release. The effectiveness of the reagents indicates that there is an external, reactable SH-group on the transporter, that the thiol reagent must be somewhat lipophilic for it to react with the SH-group(s) and that the same synaptosomal transport system is responsible for both uptake and release of GABA

BioGauges: Toward More Objective Evaluation of Biometrically-Based Interfaces

In an effort to better understand and fully characterize human interaction with biometrically-based interfaces, the BioGauges method and toolset are presented. BioGauges provide a mechanism for determining the range, reliability, and granularity of control possible for a user operating a biometrically-based interface. We first demonstrate the method with a study of ten able-bodied people characterizing two different continuous biometrically-based interfaces with a thresholded task. Then, we further demonstrate the method by assessing the spatial granularity of two continuous biometrically-based interfaces for five people with varying stages of paralysis due to amyotrophic lateral sclerosis (ALS)

Cohesin cleavage by separase is enhanced by a substrate motif distinct from the cleavage site.

Chromosome segregation begins when the cysteine protease, separase, cleaves the Scc1 subunit of cohesin at the metaphase-to-anaphase transition. Separase is inhibited prior to metaphase by the tightly bound securin protein, which contains a pseudosubstrate motif that blocks the separase active site. To investigate separase substrate specificity and regulation, here we develop a system for producing recombinant, securin-free human separase. Using this enzyme, we identify an LPE motif on the Scc1 substrate that is distinct from the cleavage site and is required for rapid and specific substrate cleavage. Securin also contains a conserved LPE motif, and we provide evidence that this sequence blocks separase engagement of the Scc1 LPE motif. Our results suggest that rapid cohesin cleavage by separase requires a substrate docking interaction outside the active site. This interaction is blocked by securin, providing a second mechanism by which securin inhibits cohesin cleavage

[Introduction to] Community Wealth Building and the Reconstruction of American Democracy: Can We Make American Democracy Work?

How can we create and sustain an America that never was, but should be? How can we build a truly multiracial democracy in which everyone is valued and possesses the needed political, economic and social capital so that democracy becomes a meaningful way of life, for all citizens? By critically probing these questions, the editors of Community Wealth Building and the Reconstruction of American Democracy seize the opportunity to bridge the gap between our democratic aspirations and our current reality. In a moment of democratic disappointment and anxiety, politicians, policy officials, scholars and citizens desire an effective response. This book assembles new voices and novel perspectives that offer a compelling vision for democracy and the prospects and possibilities afforded by community wealth building, an emerging policy paradigm focused on community-based, creative solutions to systemic problems. The contributors explore how, by cultivating the capacities of citizens, American democracy can be revived - indeed, created - as a veritable practice of everyday life. Scholars of democracy in political science, history, sociology, public policy, economics, African-American studies and related topics as well as policy practitioners, journalists and students will appreciate the cutting-edge work by leading scholars and the contributions from impactful practitioners from the White House to City Halls, in this discussion of the challenges facing contemporary American democracy and the prospects for reform and change. Please download the Introduction from the link above. You may purchase this book directly from the publisher from the link below.https://scholarship.richmond.edu/bookshelf/1381/thumbnail.jp

Phrenic nerve injury secondary to extracorporeal membrane oxygenation in pregancy: A case report

Extracorporeal membrane oxygenation (ECMO) is used to provide acute respiratory and/or hemodynamic support to patients with severe, refractory respiratory failure. Phrenic nerve injury with subsequent hemidiaphragm paralysis should be included in the differential diagnosis of pregnant women with persistent hypoxia after ECMO cannulation