“I Walked Out”: Perambulatory Poetics, Authorial Independence, and Isabella Whitney’s Poetic Voice in <i>A Sweet Nosgay</i>

The act of walking energizes the formation of Isabella Whitney’s poetic voice in her second volume of verse, A Sweet Nosgay (pub. 1573). Walking out of her house, trespassing in Plat’s garden, and traversing the perimeter of Bedlam are just a few of the striking scenes that depict Whitney’s perambulation. To examine the connection between walking and the formation of her poetic voice, I suggest that Whitney’s walking operates in two distinct registers. Firstly, walking is a thematic concern that exposes her interest in the contours of intellectual independence, the process of artistic production, and the vulnerability occasioned by impecunity. Secondly, walking operates as a form of poetic performativity, figurative of her trajectory towards print publication. This essay expands discussion on Whitney’s mobility, suggesting that perambulatory poetics are a crucial component of her authorial self-presentation in A Sweet Nosgay

Study of an instrument for sensing errors in a telescope wavefront

Focal plane sensors for determining the error in a telescope wavefront were investigated. The construction of three candidate test instruments and their evaluation in terms of small wavefront error aberration measurements are described. A laboratory wavefront simulator was designed and fabricated to evaluate the test instruments. The laboratory wavefront error simulator was used to evaluate three tests; a Hartmann test, a polarization shearing interferometer test, and an interferometric Zernike test

The design, construction and testing of the optics for a 147-cm-aperture telescope

Geodetic optics research for the Air Force Cambridge Research Laboratories (AFCRL) is described. The work consisted mainly of the fabrication of the optical components for a telescope with a 152-cm-diam (60-in.) primary mirror masked down to 147-cm-diam for use by the AFCRL for a lunar ranging experiment. Among the achievements of this contract were the following: completion of the primary and secondary mirrors for a high-quality 147-cm-diam telescope system in eight months from the start of edging the primary; manufacture and testing of a unique center mount for the primary according to an AFCRL design that allowed for a thin-edged and therefore less-massive mirror; and development of a quantitative analysis of the wire test for calculating the departure of the mirror figure from the design figure quickly and accurately after each polishing step. This analysis method in conjunction with a knowledge of polishing rates for given weights and diameters of tools, mirror, and polishing materials should considerably reduce the polishing time required for future large mirrors

An Assessment of Data Related to Inspections of Risk Factors for Public Swimming Pools

Background: The Georgia Department of Public Health (DPH) is mandated to ensure that public swimming pools are safe for those who use them. This mandate is carried out by the DPH and local environmental health professionals through regulations and inspections. In 2015, legislation was introduced proposing to reduce the authority of the DPH to inspect certain pool types (apartments, subdivision, condominiums) and thus reduce regulatory protections in place for swimmers. To ensure that the DPH had current information on the risks associated with pools, the EH team, with assistance from a graduate student, analyzed inspection data to evaluate risk factors associated with these pool types and summarized drownings and waterborne disease outbreaks (WBDOs). Methods: Pool inspection data (n=4,441 pools) for 2014 were retrieved from the Environmental Health Information System (EHIS) of the DPH. Data from the 2010 Census and epidemiological data on drownings and water-borne disease outbreaks (WBDOs) were also evaluated. Data were stratified by public health district and type/number of pools and analyzed for selected violations of health risk factors (pH, barriers, disinfectant residual). Drownings and WBDOs were described and summarized. Results: Approximately 55% of inspected pools were for apartments, condominiums, and subdivisions. These pool types were consistently cited by inspectors for the selected risk factors and ranked in the top five for these violations. In 2013, children aged 1-17 had the highest percentage (30%) of deaths from drowning. In 2001-2014, there were 28 WBDOs, with 39% occurring at public pool venues. Conclusions: Data from this research provided information on risks associated with pools and supported the importance of inspection programs for public swimming pools. The data were used to inform policy makers on the risks associated with the pool venues under legislative review. These data, combined with other risk factor information, were utilized by the DPH to inform training needs and to reinforce public health messaging on protecting swimmer health

NASA Perspective and Modeling of Thermal Runaway Propagation Mitigation in Aerospace Batteries

NASA has traditionally sought to reduce the likelihood of a single cell thermal runaway (TR) in their aerospace batteries to an absolute minimum by employing rigorous screening program of the cells. There was generally a belief that TR propagation resulting in catastrophic failure of the battery was a forgone conclusion for densely packed aerospace lithium-ion batteries. As it turns out, this may not be the case. An increasing number of purportedly TR propagation-resistant batteries are appearing among NASA partners in the commercial sector and the Department of Defense. In the recent update of the battery safety standard (JSC 20793) to address this paradigm shift, the NASA community included requirements for assessing TR severity and identifying simple, low-cost severity reduction measures. Unfortunately, there are no best-practice guidelines for this work in the Agency, so the first project team attempting to meet these requirements would have an undue burden placed upon them. A NASA engineering Safety Center (NESC) team set out to perform pathfinding activities for meeting those requirements. This presentation will provide contextual background to this effort, as well as initial results in attempting to model and simulate TR heat transfer and propagation within battery designs

Energy Technology Division research summary 2004.

The Energy Technology (ET) Division provides materials and engineering technology support to a wide range of programs important to the US Department of Energy (DOE). The Division's capabilities are generally applied to technical issues associated with energy systems, biomedical engineering, transportation, and homeland security. Research related to the operational safety of commercial light water nuclear reactors (LWRs) for the US Nuclear Regulatory Commission (NRC) remains another significant area of interest for the Division. The pie chart below summarizes the ET sources of funding for FY 2004

Overview of steam generator tube degradation and integrity issues

The degradation of steam generator tubes in pressurized water nuclear reactors continues to be a serious problem. Primary water stress corrosion cracking is commonly observed at the roll transition zone at U-bends, at tube denting locations, and occasionally in plugs and sleeves. Outer-diameter stress corrosion cracking and intergranular attack commonly occur near the tube support plate crevice, near the tube sheet in crevices or under sludge piles, and occasionally in the free span. A particularly troubling recent trend has been the increasing occurrence of circumferential cracking at the RTZ on both the primary and secondary sides. Segmented axial cracking at the tubes support plate crevices is also becoming more common. Despite recent advances in in-service inspection technology, a clear need still exists for quantifying and improving the reliability of in- service inspection methods with respect to the probability of detection of the various types of flaws and their accurate sizing. Improved inspection technology and the increasing occurrence of such degradation modes as circumferential cracking, intergranular attack, and discontinuous axial cracking have led to the formulation of a new performance-based steam generator rule. This new rule would require the development and implementation of a steam generator management program that monitors tube condition against accepted performance criteria to ensure that the tubes perform the required safety function over the next operating cycle. The new steam generator rule will also be applied to severe accident conditions to determine the continued serviceability of a steam generator with degraded tubes in the event of a severe accident. Preliminary analyses are being performed for a hypothetical severe accident scenario to determine whether failure will occur first in the steam generator tubes, which would lead to containment bypass, or instead in the hot leg nozzle or surge line, which would not

Improved Self-Esteem in Artists After Participating in the “Building Confidence and Self-Esteem Toolbox Workshop”

Performing and creative artists have unique occupational and lifestyle stresses and challenges that can negatively affect self-esteem. Low self-esteem not only has serious implications for their psychological and physical health, it can also affect their performance, and creativity. There is a need to establish effective interventions to deal with this issue. To the best of our knowledge, there are no reported studies specific to workshops or interventions on enhancing self-esteem for artists. The Al and Malka Green Artists' Health Centre at the Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada, is a unique multidisciplinary, and integrative clinic serving the special needs of the artist population. We developed a workshop entitled “Building Confidence and Self Esteem Toolbox Workshop” to address this need. We then designed a single-blind, randomized, prospective, pilot study to evaluate the effectiveness of the workshop on enhancing self-esteem in artists, and to evaluate the long-term effectiveness of using the recommended tools in maintaining a healthy self-esteem, as well as maintaining physical and emotional health. Both quantitative and qualitative data were collected. A validated “Self-Esteem Checkup” questionnaire was administered pre- and immediately post workshop, as well as at 2, 6, and 12 months post workshop. Open-ended questions were posed to study participants via email at 2 and 12 months following the workshop, and at 6 months in in-person interviews. Thirty-five professional artists consented to participate in the study, with 26 completing all study visits. Mean scores for all time points, and the individual questionnaire statement mean scores for the five timepoints increased significantly post-workshop and remained statistically significantly improved by the 3rd follow-up 12 months later (p &lt; 0.001). The mean self-esteem rating score increased significantly post-workshop and remained statistically significantly improved by the 3rd follow-up 12 months later (p &lt; 0.01). Qualitative data showed positive feedback on the utilization of the tools learned in the workshop that helped maintain this improvement over a 1-year period. This workshop may be an effective means of addressing the issue of self-esteem in artists. Further controlled studies of larger sample size and longer duration are needed to confirm these findings

Immunomodulator expression in trophoblasts from the feline immunodeficiency virus (FIV)-infected cat

<p>Abstract</p> <p>Background</p> <p>FIV infection frequently compromises pregnancy under experimental conditions and is accompanied by aberrant expression of some placental cytokines. Trophoblasts produce numerous immunomodulators that play a role in placental development and pregnancy maintenance. We hypothesized that FIV infection may cause dysregulation of trophoblast immunomodulator expression, and aberrant expression of these molecules may potentiate inflammation and compromise pregnancy. The purpose of this project was to evaluate the expression of representative pro-(TNF-α, IFN-γ, IL-1β, IL-2, IL-6, IL-12p35, IL-12p40, IL-18, and GM-CSF) and anti-inflammatory cytokines (IL-4, IL-5, and IL-10); CD134, a secondary co-stimulatory molecule expressed on activated T cells (FIV primary receptor); the chemokine receptor CXCR4 (FIV co-receptor); SDF-1α, the chemokine ligand to CXCR4; and FIV gag in trophoblasts from early-and late-term pregnancy.</p> <p>Methods</p> <p>We used an anti-cytokeratin antibody in immunohistochemistry to identify trophoblasts selectively, collected these cells using laser capture microdissection, and extracted total RNA from the captured cell populations. Real time, reverse transcription-PCR was used to quantify gene expression.</p> <p>Results</p> <p>We detected IL-4, IL-5, IL-6, IL-1β, IL-12p35, IL-12p40, and CXCR4 in trophoblasts from early-and late-term pregnancy. Expression of cytokines increased from early to late pregnancy in normal tissues. A clear, pro-inflammatory microenvironment was not evident in trophoblasts from FIV-infected queens at either stage of pregnancy. Reproductive failure was accompanied by down-regulation of both pro-and anti-inflammatory cytokines. CD134 was not detected in trophoblasts, and FIV gag was detected in only one of ten trophoblast specimens collected from FIV-infected queens.</p> <p>Conclusion</p> <p>Feline trophoblasts express an array of pro-and anti-inflammatory immunomodulators whose expression increases from early to late pregnancy in normal tissues. Non-viable pregnancies were associated with decreased expression of immunomodulators which regulate trophoblast invasion in other species. The detection of FIV RNA in trophoblasts was rare, suggesting that the high rate of reproductive failure in FIV-infected queens was not a direct result of viral replication in trophoblasts. The influence of placental immune cells on trophoblast function and pregnancy maintenance in the FIV-infected cat requires additional study.</p

Analysis of potential for jet-impingement erosion from leaking steam generator tubes during severe accidents.

This report summarizes analytical evaluation of crack-opening areas and leak rates of superheated steam through flaws in steam generator tubes and erosion of neighboring tubes due to jet impingement of superheated steam with entrained particles from core debris created during severe accidents. An analytical model for calculating crack-opening area as a function of time and temperature was validated with tests on tubes with machined flaws. A three-dimensional computational fluid dynamics code was used to calculate the jet velocity impinging on neighboring tubes as a function of tube spacing and crack-opening area. Erosion tests were conducted in a high-temperature, high-velocity erosion rig at the University of Cincinnati, using micrometer-sized nickel particles mixed in with high-temperature gas from a burner. The erosion results, together with analytical models, were used to estimate the erosive effects of superheated steam with entrained aerosols from the core during severe accidents