83 research outputs found
Aristotle’s \u3ci\u3ePoetics\u3c/i\u3e: A Biologist’s Approach to Tragedy
The paper describes a class that introduces Aristotle’s Poetics from the perspective of his scientific, especially biological, treatises: a systematic analysis of what emotions a tragedy is supposed to elicit and how they are resolved by the audience (homoeopathy). Students read 11 ancient and modern plays and view one film, observing whether his theory of the Tragic explains our responses. The final project includes the writing of a tragic story (not a drama) evincing the students’ own understanding of the Tragic based on the readings
Student Athletics and Honors: Building Relationships
Few university administrators today would argue against having more student athletes applying for and successfully completing honors curricula. Such students are great for PR. But, sad to say, coaches and faculty, at least at tier-1 universities like the University of Washington, are often suspicious of each other’s intentions. Some coaches see too much focus on education as a threat to their team’s success and ultimately their jobs; some faculty see athletes, especially in the revenue sports, as uncommitted to education, exploited by universities, and biding their time in school to enter the lucrative professional careers they believe await them. Yet, there exists a goal that both honors students and student athletes, faculty and coaches, share, a goal that could well provide the basis for beginning a productive relationship, namely the pursuit of excellence. In what follows, we make the case that Honors is uniquely situated to assist in the creative development of the way professors and coaches see student athletes. Our case is based on courses offered to student athletes that were overseen by the UW Honors Program and on the useful exchanges the program developed with Student Athletic Services and Undergraduate Academic Affairs, the unit in which the honors program is housed at the University of Washington. This three-way relationship was not part of a preconceived plan; rather, we followed where circumstances led. What we offer here thus represents observations and suggestions, not a fully developed model
Rupture Strength of Several Nickel-base Alloys in Sheet Form
The 100-hour rupture strengths of Inconel X, Inconel 700, Incoloy 901, Refractaloy 26, and R-235 at 1200 and 1350 F. in both the annealed and heat-treated conditions were determined. Inconel 700 had the highest rupture strength at both temperatures; Incoloy 901 was second strongest at 1200 F, and R-235 second strongest at 1350 F. With the exception of Incoloy 901, ductility was low. Photomicrographs show that fractures are through the grain boundaries. Results are compared with published data for other sheet alloys and bar stock
The Effects of Temperature on Clot Microstructure and Strength in Healthy Volunteers
BACKGROUND: Anesthesia, critical illness, and trauma are known to alter thermoregulation, which can potentially affect coagulation and clinical outcome. This in vitro preclinical study explores the relationship between temperature change and hemostasis using a recently validated viscoelastic technique. We hypothesize that temperature change will cause significant alterations in the microstructural properties of clot. METHODS: We used a novel viscoelastic technique to identify the gel point of the blood. The gel point identifies the transition of the blood from a viscoelastic liquid to a viscoelastic solid state. Furthermore, identification of the gel point provides 3 related biomarkers: the elastic modulus at the gel point, which is a measure of clot elasticity; the time to the gel point (TGP), which is a measure of the time required to form the clot; and the fractal dimension of the clot at the gel point, df, which quantifies the microstructure of the clot. The gel point measurements were performed in vitro on whole blood samples from 136 healthy volunteers over a temperature range of 27°C to 43°C. RESULTS: There was a significant negative correlation between increases in temperature, from 27°C to 43°C, and TGP (r = −0.641, P 37°C. CONCLUSIONS: This study demonstrates that the gel point technique can identify alterations in clot microstructure because of changes in temperature. This was demonstrated in slower-forming clots with less structural complexity as temperature is decreased. We also found that significant changes in clot microstructure occurred when the temperature was ≤32°C
Remembering Ada Long, May 20, 1945–February 4, 2024
As part of the National Collegiate Honors Council’s collection of essays honoring the life and work of Dr. Ada Long (1945–2024), the authors reflect on the personal and professional impact she has made in the honors experience. See https://youtube.com/live/EwdleBW1Rf8?feature=share to view the entire Celebration of Life that was held June 8, 2024
Lack of association between serological evidence of past Coxiella burnetii infection and incident ischaemic heart disease: nested case-control study
BACKGROUND: Coxiella burnetii causes the common worldwide zoonotic infection, Q fever. It has been previously suggested that patients who had recovered from acute Q fever (whether symptomatic or otherwise) may be at increased risk of ischaemic heart disease. We undertook this study to determine if past infection with Coxiella burnetii, the aetiological agent of Q fever, is a risk factor for the subsequent development of ischaemic heart disease. METHODS: A nested case-control study within the Prospective Epidemiological Study of Myocardial Infarction (PRIME). The PRIME study is a cohort study of 10,593 middle-aged men undertaken in France and Northern Ireland in the 1990s. A total of 335 incident cases of ischaemic heart disease (IHD) were identified and each case was matched to 2 IHD free controls. Q fever seropositivity was determined using a commercial IgG ELISA method. RESULTS: Seroprevalence of Q fever in the controls from Northern Ireland and France were 7.8% and 9.0% respectively. No association was seen between seropositivity and age, smoking, lipid levels, or inflammatory markers. The unadjusted odds ratio (95% CI) for Q fever seropositivity in cases compared to controls was 0.95 (0.59, 1.57). The relationship was substantially unaltered following adjustment for cardiovascular risk factors and potential confounders. CONCLUSION: Serological evidence of past infection with C. burnetii was not found to be associated with an increased risk of IHD
Restriction associated DNA-genotyping at multiple spatial scales in Arabidopsis lyrata reveals signatures of pathogen-mediated selection
Background: Genome scans based on outlier analyses have revolutionized detection of genes involved in adaptive processes, but reports of some forms of selection, such as balancing selection, are still limited. It is unclear whether high throughput genotyping approaches for identification of single nucleotide polymorphisms have sufficient power to detect modes of selection expected to result in reduced genetic differentiation among populations. In this study, we used Arabidopsis lyrata to investigate whether signatures of balancing selection can be detected based on genomic smoothing of Restriction Associated DNA sequencing (RAD-seq) data. We compared how different sampling approaches (both within and between subspecies) and different background levels of polymorphism (inbreeding or outcrossing populations) affected the ability to detect genomic regions showing key signatures of balancing selection, specifically elevated polymorphism, reduced differentiation and shifts towards intermediate allele frequencies. We then tested whether candidate genes associated with disease resistance (R-gene analogs) were detected more frequently in these regions compared to other regions of the genome.
Results: We found that genomic regions showing elevated polymorphism contained a significantly higher density of R-gene analogs predicted to be under pathogen-mediated selection than regions of non-elevated polymorphism, and that many of these also showed evidence for an intermediate site-frequency spectrum based on Tajima’s D. However, we found few genomic regions that showed both elevated polymorphism and reduced FST among populations, despite strong background levels of genetic differentiation among populations. This suggests either insufficient power to detect the reduced population structure predicted for genes under balancing selection using sparsely distributed RAD markers, or that other forms of diversifying selection are more common for the R-gene analogs tested.
Conclusions: Genome scans based on a small number of individuals sampled from a wide range of populations were sufficient to confirm the relative scarcity of signatures of balancing selection across the genome, but also identified new potential disease resistance candidates within genomic regions showing signatures of balancing selection that would be strong candidates for further sequencing efforts
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