cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Alternative description of particle shower longitudinal profile
Creators: name: Ter-Antonyan, Samvel
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An alternative parametrization of the particle shower longitudinal profile is presented. The accuracy of the obtained shower profile description is about 2-3% for the 0-1500 g/cm^2 atmosphere slant depths and primary H, He,... Fe nuclei in the 1 PeV-10 EeV energy range. It is shown that the shape of shower profile depends only on the nucleon energy, whereas the maximum shower size also depends on the energy of the parental nucleus. Results are based on the CORSIKA simulated shower profiles and are presented in comparison with the Gaisser-Hillas parametrization.
description: 6 pages, 8 figures
An investigation into the targets for cannabinoid action in the ciliate Tetrahymena pyriformis
Creators: name: Wanlahbeh, Nadia
Publisher: name: Lancaster University
Year: 2020
Subjects: Tetrahymena
cannabinoid
Peroxisome proliferator-activated receptor

description: The human endocannabinoid system (ECS) modulates many vital physiological and neuromodulatory functions. It comprises lipid endocannabinoids, e.g. Anandamide (AEA), which are synthesized on demand and which bind to receptors (e.g. CB1, CB2) to elicit a response. Single-celled protists can respond to endocannabinoids despite not possessing any of the known cannabinoid receptors suggesting they possess a rudimentary ECS with an unknown target for the endocannabinoids. The ciliate Tetrahymena thermophila possesses a suite of endocannabinoids (including AEA), with N-palmitoylethanolamide (PEA) and N-oleoylethanolamide (OEA) being two of the dominant compounds. In humans, the natural receptor for the latter is the peroxisome proliferator-activated receptor alpha (PPARα) but this receptor has not been identified in the T. thermophila genome. It may be that Tetrahymena spp. possess a ‘PPAR-like’ receptor or they possess a different target, which mediate a reaction to these endocannabinoids. This study examined the potential role of ‘PPARs’ in the ECS of Tetrahymena pyriformis. Cell death was examined in the presence of agonists to each of the three known PPAR types, i.e. OEA/PEA/AEA/Cannabidiol (CBD) (to PPARα), GW0742 (to PPARβ/δ), and Rosiglitazone (PPARγ). All agonists induced ciliate cell death and all, except PEA and Rosiglitazone, gave IC50 values similar to those recorded for human cells (GW0742, 12 μM; OEA, 45 μM; AEA and CBD, 4 μM). The negative action of some of these agonists could be alleviated by blocking PPAR isoforms with their respective antagonists (GW6471 for PPARα, GSK3787 for PPARβ/δ, and T0070907 for PPARγ). The action of AEA and GW0742 were alleviated with all antagonists, CBD was only alleviated with GW6471 (for PPARα), and OEA was alleviated by none. Results suggest that T. pyriformis possesses a PPAR-like protein/target for AEA, CBD, and GW0742, but not for OEA. Since the target of OEA was not a PPAR, this study explored other potential targets by using antagonists against the Dopamine receptor (Haloperidol), Gαi/o (Pertussis toxin [PTX]), and Protein kinase A (H89). Only PTX slightly alleviated the effect of OEA, suggesting a Gαi/o receptor mechanism. Although the results are preliminary, further study may lead to the mapping and deeper understanding of the nature of the ECS in Tetrahymena and these non-CB pathways may be a possible therapeutic target in key diseases such as cancer, obesity and diabetes.
Portugalete (Bizkaia) a finales de la Edad Media: la documentación del Registro General del Sello del Archivo General de Simancas (1476-1499)
Creators: name: Rodríguez Lajusticia, Francisco Saulo
Publisher: name: Zenodo
Year: 2020
Subjects: Portugalete, Bizkaia, Vizcaya, Registro General del Sello, Archivo General de Simancas, siglo XV

description: Este trabajo es una colección diplomática de los documentos relativos a la población de Portugalete entre los años 1476 y 1499 que se conservan en el Registro General del Sello del Archivo General de Simancas (España). This work is a diplomatic collection of documents about the population of Portugalete (Bizkaia, Spain) between the years 1476 and 1499 that are kept in the section 'Registro General del Sello' in the Archivo General de Simancas (Spain).
A systematic review of Hepatitis B virus (HBV) prevalence and genotypes in Kenya: Data to inform clinical care and health policy
Creators: name: Downs, Louise O
name: Campbell, Cori
name: Yonga, Paul
name: Githinji, George
name: Ansari, M Azim
name: Matthews, Philippa C
name: Etyang, Anthony O
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: subject: Genetics & Genomics
subject: Infectious Disease
subject: Immunology
subject: FOS: Clinical medicine

description: The aim of this systematic review and meta-analysis is to evaluate available prevalence and viral sequencing data representing chronic hepatitis B (CHB) infection in Kenya. More than 20% of the global disease burden from CHB is in Africa, however there is minimal high quality seroprevalence data from individual countries and little viral sequencing data available to represent the continent. We undertook a systematic review of the prevalence and genetic data available for hepatitis B virus (HBV) in Kenya using the Preferred Reporting Items for Systematic Review and Meta-analysis (PRISMA) 2020 checklist. We identified 23 studies reporting HBV prevalence and 8 studies that included HBV genetic data published in English between January 2000 and December 2021. We assessed study quality using the Joanna Briggs Institute critical appraisal checklist. Due to study heterogeneity, we divided the studies to represent low, moderate, high and very high-risk for HBV infection, identifying 8, 7, 5 and 3 studies in these groups, respectively. We calculated pooled HBV prevalence within each group and evaluated available sequencing data. Pooled HBV prevalence was 3.4% (95% CI 2.7–4.2%), 6.1% (95% CI 5.1–7.4%), 6.2% (95% CI 4.64–8.2) and 29.2% (95% CI 12.2–55.1), respectively. Study quality was overall low; only three studies detailed sample size calculation and 17/23 studies were cross sectional. Eight studies included genetic information on HBV, with two undertaking whole genome sequencing. Genotype A accounted for 92% of infections. Other genotypes included genotype D (6%), D/E recombinants (1%) or mixed populations (1%). Drug resistance mutations were reported by two studies. There is an urgent need for more high quality seroprevalence and genetic data to represent HBV in Kenya to underpin improved HBV screening, treatment and prevention in order to support progress towards elimination targets.
Probing the Majorana neutrinos and their CP violation in decays of charged scalar mesons $π, K, D, D_s, B, B_c$
Creators: name: Cvetic, Gorazd
name: Dib, Claudio
name: Kim, C. S.
name: Zamora-Saa, Jilberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Some of the outstanding questions of particle physics today concern the neutrino sector, in particular whether there are more neutrinos than those already known and whether they are Dirac or Majorana particles.There are different ways to explore these issues. In this article we describe neutrino-mediated decays of charged pseudoscalar mesons such as $π^{\pm}$, $K^{\pm}$ and $B^{\pm}$, in scenarios where extra neutrinos are heavy and can be on their mass shell. We discuss semileptonic and leptonic decays of such kinds. We investigate possible ways of using these decays in order to distinguish between the Dirac and Majorana character of neutrinos. Further, we argue that there are significant possibilities of detecting CP violation in such decays when there are at least two almost degenerate Majorana neutrinos involved. This latter type of scenario fits well into the known neutrino minimal standard model ($ν$MSM) which could simultaneously explain the Dark Matter and Baryon Asymmetry of the Universe.
description: v3: 37 pages, 14 figures; minor typographical errors corrected; published in Symmetry
LRS: Implementation of ARC controller
Creators: name: COSENTINO, Rosario
name: HERNANDEZ DIAZ, MARCOS
Publisher: name: O.A. Catania
Year: 2022

description: This document is intended to give some information about the operations to be done for the upgrade of the existing cryostat to the new acquisition system based on a ARC controller. This documentation includes the internal wiring and the cables specifications.
Algebraic method for finding equivalence groups
Creators: name: Bihlo, Alexander
name: Cardoso-Bihlo, Elsa Dos Santos
name: Popovych, Roman O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35A30 (Primary) 35L70, 35Q74, 74B20 (Secondary)

description: The algebraic method for computing the complete point symmetry group of a system of differential equations is extended to finding the complete equivalence group of a class of such systems. The extended method uses the knowledge of the corresponding equivalence algebra. Two versions of the method are presented, where the first involves the automorphism group of this algebra and the second is based on a list of its megaideals. We illustrate the megaideal-based version of the method with the computation of the complete equivalence group of a class of nonlinear wave equations with applications in nonlinear elasticity.
description: 17 pages; revised version; includes results that have been excluded from the journal version of the preprint arXiv:1106.4801v1
Additional file 1 of Identifying, describing, and assessing interventions that support new graduate nurse transition into critical care nursing practice: a systematic review protocol
Creators: name: Vanderspank-Wright, Brandi
name: Lalonde, Michelle
name: Squires, Janet
name: Graham, Ian D.
name: Efstathiou, Nikolaos
name: Burry, Robin Devey
name: Marcogliese, Emily
name: Skidmore, Becky
name: Vandyk, Amanda
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. PRISMA-P 2015 Checklist.
The Integrated Spectrum of M67 and the Spectroscopic Age of M32
Creators: name: Rose, James A.
name: Caldwell, Nelson
name: Schiavon, Ricardo P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: We construct an integrated spectrum of the intermediate-age, solar-metallicity Galactic cluster M67, from individual spectroscopic observations of bona fide cluster members. The spectrum so obtained is used as a template to test our stellar population synthesis models, in an age and metallicity regime where such models remain largely untested. As a result, we demonstrate that our models predict a spectroscopic age of 3.5 ± 0.5 Gyr for M67, which is the same age we obtain from fitting isochrones to the color-magnitude diagram of the cluster. Full consistency is reached when using either Hβ, Hγ, or Hδ as the age indicator. We also check if the models, when applied to the cluster integrated spectrum, predict elemental abundances in agreement with the known detailed abundance pattern of the cluster. The models also pass the latter test, by predicting the abundances of iron, magnesium, carbon, and nitrogen in agreement with detailed abundance analyses of cluster stars to within 0.1 dex. Encouraged by the high degree of consistency of our models, we apply them to the study of the integrated spectrum of the central 3'' of the compact elliptical galaxy M32. The resulting luminosity-weighted age of the galaxy ranges between 2 and 3.5 Gyr, depending on the age indicator adopted. According to our models, the center of M32 seems to have a supersolar iron abundance, ranging between [Fe/H] ~ +0.1 and +0.3, depending on the spectral index adopted. The light element magnesium seems to be underabundant in the center of M32 relative to iron by about ~0.1–0.2 dex, whereas the data are consistent with nearly solar carbon and nitrogen abundances relative to iron. We find that single-age, single-metallicity stellar population models with solar-scaled abundance patterns cannot fit all the Balmer and metal lines in the integrated spectrum of M32. In particular, there is a systematic trend in the sense that bluer absorption lines indicate a younger age and a higher metallicity. This slight inconsistency can be due either to (unaccounted for) abundance ratio effects on blue iron and Balmer line indices or to a spread of the ages of the stellar populations in M32. Current stellar population models cannot break this degeneracy at the level of accuracy required to address this problem.
Additional file 1 of Older age and frailty are the chief predictors of mortality in COVID-19 patients admitted to an acute medical unit in a secondary care setting- a cohort study
Creators: name: Chinnadurai, Rajkumar
name: Onesi Ogedengbe
name: Agarwal, Priya
name: Money-Coomes, Sally
name: Abdurrahman, Ahmad Z.
name: Sajeel Mohammed
name: Kalra, Philip A.
name: Rothwell, Nicola
name: Pradhan, Sweta
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Computational Biology

description: Additional file 1: Supplementary table 1. Association between risk factors and mortality in COVID-19 positive patients by cox-regression models (univariate and multivariate model 1&2). Supplementary table 2. Association between risk factors and mortality in COVID-19 positive patients by cox-regression model (multivariate model 3).
New measurement of the d(d,p)t reaction at astrophysical energies via the Trojan-horse method
Creators: name: Li, Chengbo
name: Wen, Qungang
name: Fu, Yuanyong
name: Zhou, Jing
name: Zhou, Shuhua
name: Meng, Qiuying
name: Spitaleri, C.
name: Tumino, A.
name: Pizzone, R. G.
name: Lamia, L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The study of d(d,p)t reaction is very important for the nucleosynthesis in both standard Big Bang and stellar evolution, as well as for the future fusion reactors planning of energy production. The d(d,p)t bare nucleus astrophysical S(E) factor has been measured indirectly at energies from about 400 keV down to several keV by means of the Trojan horse method applied to the quasi-free process $\rm {}^2H({}^6Li,pt){}^4He$ induced at a lithium beam energy of 9.5 MeV, which is closer to the zero quasi-free energy point. An accurate analysis leads to the determination of the $\rm S_{bare}(0)=56.7 \pm 2.0 keV \cdot b$ and of the corresponding electron screening potential $\rm U_e = 13.2 \pm 4.3 eV$. In addition, this work gives an updated test for the Trojan horse nucleus invariance comparing with previous indirect investigations using $\rm {}^3He=(d+p)$ breakup.
description: 6 pages, 7 figures
title: Ð¤Ð¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹ Ð² ÐºÐ¾Ð½ÑÐµÐºÑÑÐµ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ Ð±Ð¸Ð·Ð½ÐµÑÐ°
title: ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾ÑÑÑ 5.2.6. ÐÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñ
titleType: Subtitle
Creators: name: ÐÑÐ³ÐµÑÑ, ÐÑÐ»Ð»Ð¸
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÑÐ¸Ð½ÑÑÐ¸Ðµ ÑÐµÑÐµÐ½Ð¸Ð¹
ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ðµ ÑÐµÑÐµÐ½Ð¸Ñ
Ð¼ÐµÑÐ¾Ð´Ñ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹
ÑÐ¸ÑÑÐ¾Ð²Ð°Ñ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ Ð±Ð¸Ð·Ð½ÐµÑÐ°
ÑÐ¸ÑÑÐ¾Ð²Ð¸Ð·Ð°ÑÐ¸Ñ Ð±Ð¸Ð·Ð½ÐµÑÐ°

description: ÐÐ¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð° Ð½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÑ ÑÐµÐ¾ÑÐµÑÐ¸ÐºÐ¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ð¸ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¹, Ð¾Ð±ÐµÑÐ¿ÐµÑÐ¸Ð²Ð°ÑÑÐ¸Ñ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ðµ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹ Ð² Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸, Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð½ÑÑ Ð½Ð° Ð¸Ð½ÑÐµÑÐ½ÐµÑ-Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ Ð¸ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ðµ Ð±Ð¸Ð·Ð½ÐµÑÐ° Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐµÐ¹ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸. ÐÐºÑÑÐ°Ð»ÑÐ½Ð¾ÑÑÑ ÑÐ°Ð±Ð¾ÑÑ Ð·Ð°ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð² ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹ Ð² ÐºÐ¾Ð½ÑÐµÐºÑÑÐµ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ Ð±Ð¸Ð·Ð½ÐµÑÐ°, Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð½Ð¾Ðµ Ð½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¾ÑÐ¸Ð³Ð¸Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ Ð°Ð²ÑÐ¾ÑÑÐºÐ¾Ð¹ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ¸ Ð¸ ÐµÐµ Ð°Ð¿ÑÐ¾Ð±Ð°ÑÐ¸Ð¸ Ð² ÑÐ°Ð¼ÐºÐ°Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¹. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²ÑÑÐ²Ð»ÐµÐ½Ð° ÑÐ¿ÐµÑÐ¸ÑÐ¸ÐºÐ° Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹ Ð¿ÑÐ¸ Ð¸Ð½ÑÐµÐ³ÑÐ°ÑÐ¸Ð¸ ÑÐ¸ÑÑÐ¾Ð²ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð² Ð±Ð¸Ð·Ð½ÐµÑÐµ; ÑÑÐ¾ÑÐ½ÐµÐ½Ð¾ Ð¿Ð¾Ð½ÑÑÐ¸Ðµ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ Ð±Ð¸Ð·Ð½ÐµÑÐ°; ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð°Ð²ÑÐ¾ÑÑÐºÐ¸Ð¹ Ð¿Ð¾Ð´ÑÐ¾Ð´ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹, ÑÐ¾Ð´ÐµÑÐ¶Ð°ÑÐ¸Ð¹ Ð²ÑÑÐ¾ÐºÐ¾ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐ½ÑÐµ Ð¿Ð¾Ð´ÑÐ¾Ð´Ñ Ð´Ð»Ñ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ð½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐµÑÐµÐ½Ð¸Ð¹, Ð½Ð°ÑÐµÐ»ÐµÐ½Ð½ÑÑ Ð½Ð° Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ðµ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸, Ð¸Ð½Ð½Ð¾Ð²Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»Ð° ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð¸, ÐºÐ°Ðº ÑÐ»ÐµÐ´ÑÑÐ²Ð¸Ðµ, Ð½Ð° ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ðµ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸; Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½ Ð¸Ð½Ð½Ð¾Ð²Ð°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¿Ð¾Ð´ÑÐ¾Ð´ Ðº ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð°ÑÑÑÐ¾ÑÑÐ¸Ð½Ð³ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÐµÐµ ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸; Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¼Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð°Ð²ÑÐ¾ÑÑÐºÐ¸Ñ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð¾Ð² Ð¸ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¿ÑÐ¸Ð½ÑÑÐ¸Ð¹ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½ÑÐµÑÐºÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹.
ASYMMETRIES IN THE SPECTRAL LINES OF EVOLVED HALO STARS
Creators: name: Yong, David
name: Carney, Bruce
name: Gray, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: We do an initial reconnaissance of asymmetries of spectral lines in metal-poor field stars using high-resolution observations of four red horizontal-branch and 11 red giant branch stars taken with the coude spectrograph at the Canada-France-Hawaii Telescope. We find that (1) the shapes of the line bisectors for metal-poor stars hotter than 4100 K mimic the well-known C shape of bisectors for solar-metallicity stars on the cool side of the granulation boundary while (2) metal-poor stars cooler than 4100 K, or higher up the red giant branch than M V = -1.5, show bisectors with a reversed-C shape, similar to those for solar-metallicity stars on the hot side of the granulation boundary and similar to the reversed-C shape found in a previous study for the M-type supergiant Betelgeuse. The well-documented radial-velocity jitter of high-luminosity stars and the line bisector characteristics vary in concert up the red giant branch; both phenomena are probably signatures of large convection cells.
Twenty-First Century Skills Needed by Business Education Graduates of Tertiary Institutions: Observation from Business Educators in Enugu State, Nigeria
Creators: name: Odike,, MaryRose
name: Akilo,, Lovelyn
Publisher: name: GO JOURNAL
Year: 2024
Subjects: 21st-century skills, business education graduates, business educators

description: This study examines the 21st-century skills essential for the employability of Business Education graduates, as perceived by business educators in Enugu State tertiary institutions. The study's primary objective was to identify the competencies required by graduates for successful employment in Nigeria's labour market. A descriptive survey research design was adopted, with a population of 69 business educators from the Association of Business Educators of Nigeria (ABEN), Enugu State Chapter. The entire population was studied using a structured questionnaire titled "Twenty-First Century Skills Needed by Business Education Graduates for Employability" (TFCSNBEGE), which achieved a Cronbach Alpha reliability index of 0.75. Two research questions and two null hypotheses guided the study. Data were analyzed using mean, standard deviation, and t-test statistics. The findings revealed that critical thinking, creativity, teamwork, communication, information literacy, and media literacy are crucial skills for employability. There were no significant differences between male and female educators' perceptions of these skills. It was recommended that Business Education curricula emphasize the development of these 21st-century competencies to enhance graduates' employability
Additional file 1 of Automated discretization of ‘transpiration restriction to increasing VPD’ features from outdoors high-throughput phenotyping data
Creators: name: Soumyashree Kar
name: Ryokei Tanaka
name: Lijalem Balcha Korbu
name: Kholová, Jana
name: Hiroyoshi Iwata
name: Durbha, Surya S.
name: J. Adinarayana
name: Vadez, Vincent
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1: Table S1. Minimum and maximum values of Relative Humidity (%), Temperature (˚C), Vapour Pressure Deficit (kPa) and maximum of Solar Radiation (MJm-2) and Wind Speed (ms-1) measured from 20.02.2017 to 06.03.2017 at the LeasyScan HTP platform where 48 chickpea genotypes were phenotyped. Table S2. Estimates of the class-specific Mean Decrease in Accuracy (MDA, %) of the OOB samples from cluster 1 (C1), cluster 2 (C2) and cluster 3 (C3), the Overall Mean Decrease in Accuracy (MDA, %) and the Mean Decrease in Gini (MDG) for each feature, obtained from the Random Forest model with the least OOB error rate of 6.23%. Table S3. The breakpoint values of Vapour Pressure Deficit (VPD, kPa) at which maximum transpiration rate (TR) was restricted, is given for cluster 1 (C1), cluster 2 (C2), cluster 3 (C3) and at each level of environmental influence (% Split). The values shown are considering the 100% VPD level as 6.29 kPa which was the maximum value observed during the experiment. Figure S1. Variation in maximum TR (grams/sector/15 min) with respect to maximum VPD (kPa) for the wild (a), highTE (b) and (c) groups of genotypes. The trend lines (red dotted lines) and the equation of the linear regression between the median maximum TR and corresponding VPD values are also shown for each group. Data shown in the plots is sorted in the increasing order of maximum VPD values, as measured from 20.02.2017 – 06.03.2017. Figure S2. Dunn Index values plotted with respect to the increasing number of clusters from 2 to 10. Figure S3. The change in OOB Error Rate (%) plotted for mtry (the subset of features used for model training) values ranging from 1 to 10, during cross-validation of the unsupervised Random Forest (uRF) model
Additional file 1 of Determinants of referral of women with urinary incontinence to specialist services: a national cohort study using primary care data from the UK
Creators: name: Ipek Gurol-Urganci
name: Geary, Rebecca S.
name: Mamza, Jil B.
name: Iwagami, Masao
name: El-Hamamsy, Dina
name: Duckett, Jonathan
name: Wilson, Andrew
name: Tincello, Douglas
name: Meulen, Jan Van Der
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Dark matter phenomenology in Z’2 broken singlet extended 2HDM
Creators: name: Ziegler, Julia
name: Dutta, Juhi
name: Lahiri, Jayita
name: Li, Cheng
name: Moortgat-Pick, Gudrid
name: Tabira, Sheikh Farah
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2024
Subjects: doublet: 2
dark matter: relic density
singlet
GeV
Higgs particle: doublet: 2
CERN LEP Stor
benchmark
stability
numerical calculations

description: Many different approaches have been made to explain the nature of dark matter (DM), but it remains and unsolved mystery of our universe. In this work we examine a type II two-Higgs-doublet model extended by a complex singlet (2HDMS), where the pseudo-scalar component of the singlet acts as a natural DM candidate. The DM candidate is stabilized by a Z'2 symmetry, which is broken spontaneously by the singlet acquiring a vacuum expectation value (vev). This vev in turn causes the scalar component of the singlet to mix with the scalar components of the two doublets, which results in three scalar Higgs particles. Additionally we aim to include an excess around 95 GeV, which was observed at CSM and LEP and can be explained by one of the three scalar Higgs particles.After introducing the model, we apply experimental and theoretical constraints and find a viable benchmark point. We then look into the DM phenomenology as well as collider phenomenology.
An Analytic Study of Strain Engineering the Electronic Bandgap in Single-Layer Black Phosphorus
Creators: name: Jiang, Jin-Wu
name: Park, Harold S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an analytic study, based on the tight-binding approximation, of strain effects on the electronic bandgap in single-layer black phosphorus. We obtain an expression for the variation of the bandgap induced by a general strain type that includes both tension in and out of the plane and shear, and use this to determine the most efficient strain direction for different strain types, along which the strongest bandgap manipulation can be achieved. We find that the strain direction that enables the maximum manipulation of the bandgap is not necessarily in the armchair or zigzag direction. Instead, to achieve the strongest bandgap modulation, the direction of the applied mechanical strain is dependent on the type of applied strain.
description: Physical Review B, accepted
Additional file 1 of Immune biomarkers link air pollution exposure to blood pressure in adolescents
Creators: name: Prunicki, Mary
name: Cauwenberghs, Nicholas
name: Ataam, Jennifer Arthur
name: Hesam Movassagh
name: Juyong Brian Kim
name: Kuznetsova, Tatiana
name: Wu, Joseph C.
name: Maecker, Holden
name: Francois Haddad
name: Nadeau, Kari
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Inorganic Chemistry
subject: Science Policy

description: Additional file 1. Supplemental Figures and Tables POLLUTION_ADOL_FINAL_Supplement.
Synchronization transition in ensemble of coupled phase oscillators with coherence-induced phase correction
Creators: name: Belan, Sergey
Publisher: name: arXiv
Year: 2015
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We study synchronization phenomenon in a self-correcting population of noisy phase oscillators with randomly distributed natural frequencies. In our model each oscillator stochastically switches its phase to the ensemble-averaged value $ψ$ at a typical rate which is proportional to the degree of phase coherence $r$. The system exhibits a continuous phase transition to collective synchronization similar to classical Kuramoto model. Based on the self-consistent arguments and on the linear stability analysis of an incoherent state we derive analytically the threshold value $k_c$ of coupling constant corresponding to the onset of a partially synchronized state. Just above the transition point the linear scaling law $r\propto k-k_c$ is found. We also show that nonlinear relation between rate of phase correction and order parameter leads to non-trivial transition between incoherence and synchrony. To illustrate our analytical results, numerical simulations have been performed for a large population of phase oscillators with proposed type of coupling. The results of this work could become useful in designing distributed networked systems capable of self-synchronization.
description: 8 pages, 3 figures
Reappraisal of the limit on the variation in $α$ implied by Oklo
Creators: name: Davis, Edward D.
name: Hamdan, Leila
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We reconsider the analysis of the sensitivity of neutron resonance energies $E_i$ to changes in $α$ with a view to resolving uncertainties that plague earlier treatments. We point out that, with more appropriate choices of nuclear parameters, the standard estimate (due to Damour and Dyson) of the sensitivity for resonances in ${}^{150}$Sm is increased by a factor of 2.5. We go on to identify and compute excitation, Coulomb and deformation corrections. To this end, we use deformed Fermi density distributions fitted to the output of Hartree-Fock (HF) + BCS calculations (with both the SLy4 and SkM$^*$ Skyrme functionals), the energetics of the surface diffuseness of nuclei, and thermal properties of their deformation. We also invoke the eigenstate thermalization hypothesis, performing the requisite microcanonical averages with two phenomenological level densities which, via the leptodermous expansion of the level density parameter, include the effect of increased surface diffuseness. Theoretical uncertainties are assessed with the \emph{inter-model} prescription of Dobaczewski et al. [J. Phys. G: Nucl. Part. Phys. {\bf 41}, 074001 (2014)]. The corrections diminish the revised ${}^{150}$Sm sensitivity but not by more than 25\%. Subject to a weak and testable restriction on the change in $m_q/Λ$ (relative to the change in $α$) since the time when the Oklo reactors were active ($m_q$ is the average of the $\text{u}$ and $\text{d}$ current quark masses, and $Λ$ is the mass scale of quantum chromodynamics), we deduce that $|α_{\text{Oklo}}-α_{\text{now}}|<1.1\times 10^{-8}α_{\text{now}}$ (95\% confidence level). The corresponding bound on the present-day time variation of $α$ is tighter than the best limit to date from atomic clock experiments.
description: Changes to text and abstract (dealing with confidence intervals), some references added (9 pages)
Additional file 1 of The association between the workload of general practitioners and patient experiences with care: results of a cross-sectional study in 33 countries
Creators: name: Schäfer, Willemijn L. A.
name: Berg, Michael J. Van Den
name: Groenewegen, Peter P.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 1:. Appendix Tables.
RESULTS OF THE FIRST SIMULTANEOUS X-RAY, OPTICAL, AND RADIO CAMPAIGN ON THE BLAZAR PKS 1622-297
Creators: name: Nysewander, Melissa
name: McFarland, John
name: LaCluyze, Aaron
name: Ryle, Wesley
name: Marshall, Kevin
name: Crain, J. Adam
name: Pollock, Joseph
name: Aller, Hugh
name: Aller, Margo
name: Ivarsen, Kevin
name: Reichart, Daniel
name: Meyer, Angela Osterman
name: Miller, H. Richard
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Coordinated X-ray, optical, and radio observations of the blazar PKS 1622-297 were obtained during a three-week campaign in 2006 using the Rossi X-Ray Timing Explorer (RXTE), the University of Michigan Radio Astronomy Observatory, and optical telescopes at Cerro Tololo Inter-American Observatory. The RXTE observations indicate that this object is a comparatively weak X-ray emitter for a Flat-Spectrum Radio Quasar. The observed broadband spectral shape indicates that X-rays were most likely produced by the Inverse Compton processes. Optical observations of this object produced unexpected results in that this object appeared redder when in a bright state and bluer when in a faint state, contrary to the observed behavior of BL Lac objects.
Additional file 2 of Adolescent determinants of life-course leisure-time vigorous physical activity trajectories: a 27-Year longitudinal study
Creators: name: Mathisen, Frida Kathrine Sofie
name: Kristensen, Sara Madeleine
name: Falco, Coral
name: Wold, Bente
Publisher: name: figshare
Year: 2023
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 2: Latent class growth analysis
Equivalence of Electronic and Mechanical Stresses in Structural Phase Stabilization: A Case Study of Indium Wires on Si(111)
Creators: name: Kim, Sun-Woo
name: Kim, Hyun-Jung
name: Ming, Fangfei
name: Jia, Yu
name: Zeng, Changgan
name: Cho, Jun-Hyung
name: Zhang, Zhenyu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It was recently proposed that the stress state of a material can also be altered via electron or hole doping, a concept termed electronic stress (ES), which is different from the traditional mechanical stress (MS) due to lattice contraction or expansion. Here we demonstrate the equivalence of ES and MS in structural stabilization, using In wires on Si(111) as a prototypical example. Our systematic density-functional theory calculations reveal that, first, for the same degrees of carrier doping into the In wires, the ES of the high-temperature metallic 4x1 structure is only slightly compressive, while that of the low-temperature insulating 8x2 structure is much larger and highly anisotropic. As a consequence, the intrinsic energy difference between the two phases is significantly reduced towards electronically phase-separated ground states. Our calculations further demonstrate quantitatively that such intriguing phase tunabilities can be achieved equivalently via lattice-contraction induced MS in the absence of charge doping. We also validate the equivalence through our detailed scanning tunneling microscopy experiments. The present findings have important implications in understanding the underlying driving forces involved in various phase transitions of simple and complex systems alike.
description: 6 pages, 6 figures
Additional file 1 of Adolescent determinants of life-course leisure-time vigorous physical activity trajectories: a 27-Year longitudinal study
Creators: name: Mathisen, Frida Kathrine Sofie
name: Kristensen, Sara Madeleine
name: Falco, Coral
name: Wold, Bente
Publisher: name: figshare
Year: 2023
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 1: Questionnaire items
VLA Spectral Line Observations of a Shocked Cold H II Region in G70.7+1.2
Creators: name: Goss, W. M.
name: Onello, Joseph S.
name: DePree, C. G.
name: Phillips, J. A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: We have observed the molecular globule G70.7+1.2 at 1375 MHz using the C configuration of the VLA, and have imaged a peculiar H168α recombination line detected at the Arecibo radio telescope. The narrow width of the recombination line (Δv ~ 3 km s-1) indicates gas cooler than 185 K and suggests that the globule harbors the coldest known H II region. Previous work showed that the recombination line came either from newly ionized gas outside a bow shock produced by supersonic motion of an early-type star through the molecular globule, or from a cold H II region inside the globule. The 20'' angular resolution of the VLA image of G70.7+1.2 was sufficient to resolve the separation between the nonthermal radio-emitting bow shock and the thermal H II region. The spectral line images show that the radio recombination line comes from cold gas near the outer boundary of the bow shock and that the line intensity is enhanced by stimulated amplification of the nonthermal continuum emanating from the bow shock.
The Rotation of RR Lyrae Stars
Creators: name: Latham, David
name: Peterson, Ruth
name: Carney, Bruce
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: We report upper limits to rotation from the measurement of line breadths via cross-correlation analysis for 27 RR Lyrae variables. The eight best-observed stars of type RRab show the same variation of breadth with phase: the breadth peaks sharply during the rise to maximum light, drops gradually, and reaches a broad minimum during the phase of maximum radius. During this phase the breadth is always narrow, consistent with instrumental resolution and turbulence alone. For the three well-observed RRc variables, the breadth is this narrow at all phases except for a slight increase during the rise to maximum light. The remaining stars also conform to these patterns, albeit with sparse phase coverage and lower signal-to-noise ratio. We interpret these results as indicating that lines are broadened in RRab stars by shock-induced plumes or turbulence during the rise to maximum light, and perhaps by other causes as well, but not by rotation in RR Lyrae stars of either type. We estimate an upper limit of v sin i < 10 km s-1 in all cases. This is in stark contrast to the rotation seen in field blue horizontal branch stars, where v sin i > 10 km s-1 in three out of six well-studied field stars, and to the more rapid rotation, often exceeding 100 km s-1, of the Population I δ Scuti variables which occupy adjacent regions of the instability strip.
title: Learning How Older People Form Sense of Coherence through an Interpretation of Their Experiences of Decline and Serious Illness During a 30-Day Readmission
title: An Interpretive Description
titleType: Subtitle
Creators: name: Gagne-Henderson, Rebecca
Publisher: name: Lancaster University
Year: 2022
Subjects: Sense of Coherence
Aged
end of life
communication
thirty day readmission
Chronic illness

description: Background: Older people with multiple comorbidities and frailty are frequently and repeatedly readmitted to acute care hospitals within 30 days of their previous discharge from the hospital. This phenomenon takes a takes a toll upon their physical reserves and emotional stamina. These losses become serial at this time of life. As one ages there are experiences of serial losses of friends, family, other social support and physical independence. Such serial losses have been conceptualized by Antonovsky’s “General Resistance Resources” and may also affect how one views the world as predictable and manageable, a so-called “Sense of Coherence”. Understanding this Sense of Coherence in these patients may help prevent negative changes and help design appropriate interventions. Literature Review: A systematically constructed literature review using an integrative design was conducted to understand the characteristics of older adults who are readmitted to the hospital within 30 days of their las discharge. PubMed, Embase and CINAHL were searched for peer reviewed published studies investigating 30-day readmissions of people aged 65+. Found studies (n=24) primarily used quantitative cohort designs (n=23). Frailty, co-morbid conditions, and polypharmacy were common. The single qualitative study (n=3 interviews) identified that lack of communication between healthcare providers may be a concern. Further qualitative enquiry is needed to explore this phenomenon in more depth. Empirical Study: The purpose of the empirical study was to examine how 30-day readmissions, physical decline and serial losses may affect older people’s Sense of Coherence. Using an Interpretive Description design, a purposive sample of people aged 65+ at the time of a current 30-day readmission to an academic U.S. hospital was recruited. Data were collected using semi-structured interviews. Directed Content Analysis was used to evaluate and interpret the data, using concepts from Sense of Coherence as a priori codes, supplemented by inductive coding. Two new concepts were identified: Incomprehensibility and Devolving Sense of Coherence. These are new contributions to the theory of Salutogenesis and the construct of Sense of Coherence. Sense of Coherence near the end-of-life differs greatly from Sense of Coherence for those who are healthy or living with mild illness. Participants who have Comprehensibility as a result of forthright communication appear to have better manageability than those with Incomprehensibility and poor communication regarding their disease processes and prognoses. When participants suffer serial losses with Incomprehensibility it may result in a Devolving Sense of Coherence at the end-of-life.
Streamlines of the Mean Stellar Motions in Elliptical Galaxies
Creators: name: Anderson, R. F.
name: Statler, Thomas S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1998

description: The stellar velocity fields of elliptical galaxies hold clues to their dynamical structure and origin. The construction of velocity-field models is greatly simplified by assuming an approximate geometrical form for the streamlines of the mean stellar motions, for example, representing the streamlines of short-axis and long-axis tube orbits by coordinate lines in a confocal coordinate system. A single confocal system precisely fits the mean motions of all tube orbits in a Stäckel potential, but these potentials are not sufficiently general. Here we test the conjecture that confocal streamlines may still be a valid approximation for more realistic triaxial systems. We numerically integrate orbits in Schwarzschild's logarithmic potential. Six sets of axis ratios are used; in each set, ~50 orbits, comprising short-axis and long-axis tubes as well as some resonant families, are integrated for ~20,000 dynamical times, and the average velocity is found in each of ~4000 spatial cells. Confocal streamlines are compared with the velocity field by finding the rms magnitude of the cross product between the velocity vectors and the streamlines. Minimizing this quantity yields a best-fit confocal system for each orbit. We find that the great majority of orbits at a given energy in each potential can be fitted by nearly identical confocal systems. There are statistically significant differences between the average streamline parameters obtained for different orbit families, but the differences are small. We show that the fitted parameters reproduce, to high accuracy, the location of the boundary between short-axis and outer long-axis tubes, which is a direct measure of the triaxiality of the potential. These results strongly support efforts to obtain accurate statistical measurements of triaxiality from kinematic observations and reasonably simple velocity-field models.
Explosive Hydrogen Burning of 27 Si, 31 S, 35 Ar, and 39 Ca in Novae and X‐Ray Bursts
Creators: name: Iliadis, Christian
name: Prantzos, Nikos
name: Thompson, William
name: Endt, Pieter
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: Stellar reaction rates for proton captures on the nuclei 27Si, 31S, 35Ar, and 39Ca are estimated from the most recent nuclear structure information available. Reliable mirror-state correspondences are found by using the isobaric multiplet mass equation. An improved method for calculating proton partial widths is applied. Systematic comparisons of excitation energies, spectroscopic factors, proton partial widths, and {gamma}-ray partial widths for states of the same isospin multiplet are presented. Stellar reaction-rate uncertainties are deduced, and our reaction rates are compared to previous estimates. Reaction network calculations are performed to investigate implications of the new reaction rates for nucleosynthesis in novae and X-ray bursts. Our recommended reaction rates are varied within their assigned uncertainties, and we find only minor effects on the nuclear energy generation and the final abundances after the outbursts. Thus, contrary to previous claims, we find no compelling reason for measuring the proton capture reactions on 27Si, 31S, 35Ar, and 39Ca by using radioactive ion beams. (c) (c) 1999. The American Astronomical Society.
Schwarzschild radial perturbations in Eddington-Finkelstein and Painlevé-Gullstrand coordinates
Creators: name: Philipp, Dennis
name: Perlick, Volker
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In a previous paper we have considered the Regge-Wheeler equation for fields of spin $s=0$, $1$ or $2$ on the Schwarzschild spacetime in coordinates that are regular at the horizon. In particular, we have constructed in Eddington-Finkelstein coordinates exact solutions in terms of series that are regular at the horizon and converge on the entire open domain from the central singularity to infinity. Here we extend this earlier work in two different directions. Firstly, we consider in Eddington-Finkelstein coordinates a massive scalar field that can serve as a dark matter candidate. Secondly, we extend the treatment of the massless case to Painlevé-Gullstrand coordinates, which are associated with radially infalling observers.
description: 14 pages, 4 figures, updated reference, corrected typing error