A Search for Hydroxylamine (NH_2OH) toward Select Astronomical Sources

Observations of 14 rotational transitions of hydroxylamine (NH_2OH) using the NRAO 12 m telescope on Kitt Peak are reported toward IRC+10216, Orion KL, Orion S, Sgr B2(N), Sgr B2(OH), W3IRS5, and W51M. Although recent models suggest the presence of NH_2OH in high abundance, these observations resulted in non-detection. Upper limits are calculated to be as much as six orders of magnitude lower than those predicted by models. Possible explanations for the lower-than-expected abundance are explored

Nutritional Adequacy of Dietary Intake Among College Students Who Follow a Veget

In recent years, forms of the vegetarian diet have been popularized for various reasons, including health benefits, support of animal rights, and greater sustainability claims. The purpose of this cross-sectional study was to examine the diet quality and adequacy and iron status of college students’ diets, and compare eating disorder (ED) risk between self-proclaimed vegetarians and non-vegetarians. The study sample was a convenience sample of students at Louisiana Tech University who were 18 years of age or older (N = 179). Students were recruited via email, flyers, and classroom announcements. Participants completed an online questionnaire with multiple validated tests; The Rapid Eating Assessment for Participants – Shortened Version (REAP-S) for diet quality, the Bratman Test for Orthorexia, and the SCOFF Questionnaire for eating disorder risk. There were 179 participants included in the analysis for this study. The mean age was 21 +/- 4.6 years; majority were female (n = 129, 72.07%) and White (n = 134, 74.86%). Body Mass Index (BMI) ranged from 16.8 to 46.4, with a mean BMI of 25.7 (SD = 5.7). Four (2.25%) participants were categorized as underweight, 94 (53.12%) as healthy weight, 46 (25.99%) as overweight, and 33 (18.64%) as obese. A significant, inverse relationship was found between REAP-S scores and BMI; an increased diet quality was linked with a lower BMI. This is consistent with the literature supporting that a healthy diet can mitigate overweight and obesity among the college population. Participants averaged a score of 27.1 out of 39 on the REAP-S, indicating moderate diet quality, indicating that there are still improvements to be made. A number of participants, 38.20% (n = 68), reported eating less than two servings of fruit daily, and 29.21% (n = 52) reported eating less than two servings of vegetables daily. The mean hemoglobin level for females was 14.09 g/dl (SD =1.36). Twenty-four percent of the females were found to have below-normal hemoglobin levels (Hbg \u3c 12.1 g/dl), 72.22% had normal hemoglobin levels (Hgb 12.1-15.1 g/dl), and 3.70% had high levels (Hbg \u3e 15.1 g/dl). The mean hemoglobin level for males was 15.87 (SD =1.48). Three (6.25%) males had below-normal Hgb levels (Hgb \u3c 13.1 g/dl), 62.50% had normal hemoglobin levels (Hgb 13.1-16.6 g/dl), and 31.25% high levels (Hgb \u3e 16.6 g/dl). There was a positive correlation found between BMI and Hemoglobin levels for males r (48) = .348, p = .018. No significant correlations were found between Hgb and the BOT, SCOFF, or REAP-S scores. There were no significant correlations found between Hbg and BMI, BOT, SCOFF, or REAP-S scores for the female group. A significant, positive correlation was found between SCOFF scores and Bratman Test scores, r (176) = .167, p = \u3c .001. As the risk of having an eating disorder increased, so did the risk of experiencing orthorexia. A significant, positive correlation was also found between REAP-S scores and Bratman Test scores, r (171) = .382, p = \u3c .001, indicating that higher diet quality scores were associated with higher risks for orthorexia. A significant, inverse relationship was found between REAP-S scores and BMI, r (158) = -.167, p = .036; as diet quality increased, BMI decreased. To further explore the relationships among participant characteristics, participants were divided into health-related or non-health-related groups. Both the REAP-S scores and Bratman Test results were found to be significantly different between the groups, t (170) = 4.06, (p = \u3c .001) and t (175) = 3.00, (p = .003), respectively. Health-related majors were found to have greater diet quality scores and a higher risk of eating disorders when compared to non-health-related majors. Having a very small percentage of vegetarian and vegan participants limited full analysis related to vegetarianism. However, this study provides nutrition professionals with valuable information regarding diet adequacy, eating disorder risk, hemoglobin levels, as well as the prevalence of vegetarianism among college students at Louisiana Tech University. Specifically, these results indicate that students in health-related majors may be at greater risk for orthorexia as they strive for higher diet quality and might also be at greater risk for other eating disorders. Results also indicated that students who maintain a diet of higher quality might have lower BMIs than their peers

Comparison of the full potential and Euler formulations for computing transonic airfoil flows

A quantitative comparison between the Euler and full potential formulations with respect to speed and accuracy is presented. The robustness of the codes used is tested by a number of transonic airfoil cases. The computed results are from four transonic airfoil computer codes. The full potential codes use fully implicit iteration algorithms. The first Euler code uses a fully implicit ADI iteration scheme. The second Euler code uses an explicit Runge Kutta time stepping algorithm which is enhanced by a multigrid convergence acceleration scheme. Quantitative comparisons are made using various plots of lift coefficient versus the average mesh spacing along the airfoil. Besides yielding an asymptotic limit to the lift coefficient, these results also demonstrate the truncation error behavior of the various codes. Quantitative conclusions regarding the full potential and Euler formulations with respect to accuracy, speed, and robustness can be presented

D. L. Pierce, Leo Quinnelly, and O. E. Pulliam to Secretary General, 28 September 1962

Telegram supporting Barnett; discusses state sovereignty. The telegram was forwarded.https://egrove.olemiss.edu/west_union_tel/1059/thumbnail.jp

Mind the gap: Patterns of red blood cell product usage in South Africa, 2014 - 2019

Background. A key component of any successful healthcare system is the availability of sufficient, safe blood products delivered in an equitable manner. South Africa (SA) has a two-tiered healthcare system with public and privately funded sectors. Blood utilisation data for both sectors are lacking. Evaluation of blood utilisation patterns in each healthcare sector will enable implementation of systems to bring about more equality.Objectives. To conduct a critical evaluation of red blood cell (RBC) product utilisation patterns at the South African National Blood Service (SANBS).Methods. Operationally collected data from RBC requests submitted to SANBS blood banks for the period 1 January 2014 - 31 March 2019 were used to determine temporal RBC product utilisation patterns by healthcare sector. Demographic patterns were determined, and per capita RBC utilisation trends calculated.Results. Of the 2 356 441 transfusion events, 65.9% occurred in the public and 34.1% in the private sector. Public sector patients were younger (median (interquartile range (IQR)) 33 (22 - 49) years) than in the private sector (median (IQR) 54 (37 - 68) years), and mainly female in both sectors (66.2% in the public sector and 53.4% in the private sector). Between 2014 and 2018, per capita RBC utilisation decreased from 11.9 to 11.0/1 000 population in the public sector, but increased from 34.8 to 38.2/1 000 population in the private sector.Conclusions. We confirmed distinctly different RBC utilisation patterns between the healthcare sectors in SA. Possible drivers for these differences may be healthcare access, differing patient populations and prescriber habits. Better understanding of these drivers may help inform equitable public health policy

Simulations of the NASA Langley 14- by 22-Foot Subsonic Tunnel for the Juncture Flow Experiment

NASAs Transformational Tools and Technologies Programs Juncture Flow experiment aims to provide data to improve Computational Fluid Dynamics (CFD) modeling in the juncture flow region. The experiment is planned to provide validation-quality data for CFD that focuses on the separation bubble near the wing-body juncture trailing edge region. Because wind tunnel tests associated with the Juncture Flow project have been designed for the purpose of CFD validation, considerable effort is going into modeling and simulating the wind tunnel. This is not only important because wind tunnel wall effects can play a role in integrated testing uncertainties, but also because the better the boundary conditions are known, the better CFD can accurately represent the experiment. This paper builds on the recent CFD efforts to model the NASA Langley 14- by 22-Foot Subsonic Tunnel. Current best practices in simulating wind tunnels are evaluated. The features of each method, as well as some of their pros and cons, are highlighted. Boundary conditions and modeling techniques currently used by CFD for empty-tunnel simulations are also described. Preliminary CFD studies associated with modeling the Juncture Flow model are summarized, with the intention to determine sensitivities of the flow near the wing-body juncture region of the model to a variety of modeling decisions

Effect of Turbulence Modeling on Hovering Rotor Flows

The effect of turbulence models in the off-body grids on the accuracy of solutions for rotor flows in hover has been investigated. Results from the Reynolds-Averaged Navier-Stokes and Laminar Off-Body models are compared. Advection of turbulent eddy viscosity has been studied to find the mechanism leading to inaccurate solutions. A coaxial rotor result is also included

A Search for Hydroxylamine (NH2OH) toward Select Astronomical Sources

Observations of 14 rotational transitions of hydroxylamine (NH2OH) using the NRAO 12 m Telescope on Kitt Peak are reported towards IRC+10216, Orion KL, Orion S, Sgr B2(N), Sgr B2(OH), W3IRS5, and W51M. Although recent models suggest the presence of NH2OH in high abundance, these observations resulted in non-detection. Upper limits are calculated to be as much as six orders of magnitude lower than predicted by models. Possible explanations for the lower than expected abundance are explored.Comment: 18 pages, 3 figures, 3 table

Peripheral T-Cell Lymphoma with Aberrant Expression of CD19, CD20, and CD79a: Case Report and Literature Review

A case of lymphoma of T-cell derivation with aberrant expression of three B-cell lineage markers (CD19, CD20, and CD79a), which was diagnosed on a left axillary excision, is described. Immunohistochemical studies and flow cytometry analysis demonstrated neoplastic cells expressing CD3, CD19, CD20, and CD79a with absence of CD4, CD8, CD10, CD30, CD34, CD56, CD68, TDT, MPO, PAX-5, and surface immunoglobulin. Gene rearrangement studies performed on paraffin blocks demonstrated monoclonal T-cell receptor gamma chain rearrangement with no evidence of clonal heavy chain rearrangement. The neoplastic cells were negative for Epstein-Barr virus (EBV) or Human Herpes Virus 8 (HHV-8). At the time of diagnosis, the PET scan demonstrated hypermetabolic neoplastic cells involving the left axilla, bilateral internal jugular areas, mediastinum, right hilum, bilateral lungs, and spleen. However, bone marrow biopsy performed for hemolytic anemia revealed normocellular bone marrow with trilineage maturation. The patient had no evidence of immunodeficiency or infection with EBV or HHV-8. This is the first reported case of a mature T-cell lymphoma with aberrant expression of three B-cell lineage markers. The current report also highlights the need for molecular gene rearrangement studies to determine the precise lineage of ambiguous neoplastic clones