cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bootstrapping dielectronic recombination from second-row elements and the Orion Nebula
Creators: name: Badnell, N. R.
name: Ferland, G. J.
name: Gorczyca, T. W.
name: Nikolic, D.
name: Wagle, G. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Dielectronic recombination (DR) is the dominant recombination process for most heavy elements in photoionized clouds. Accurate DR rates for a species can be predicted when the positions of autoionizing states are known. Unfortunately such data are not available for most third and higher-row elements. This introduces an uncertainty that is especially acute for photoionized clouds, where the low temperatures mean that DR occurs energetically through very low-lying autoionizing states. This paper discusses S$^{2+} \rightarrow$ S$^+$ DR, the process that is largely responsible for establishing the [S~III]/[S~II] ratio in nebulae. We derive an empirical rate coefficient using a novel method for second-row ions, which do have accurate data. Photoionization models are used to reproduce the [O~III] / [O~II] / [O~I] / [Ne~III] intensity ratios in central regions of the Orion Nebula. O and Ne have accurate atomic data and can be used to derive an empirical S$^{2+} \rightarrow$ S$^+$ DR rate coefficient at $\sim 10^{4}$~K. We present new calculations of the DR rate coefficient for S$^{2+} \rightarrow$ S$^+$ and quantify how uncertainties in the autoionizing level positions affect it. The empirical and theoretical results are combined and we derive a simple fit to the resulting rate coefficient at all temperatures for incorporation into spectral synthesis codes. This method can be used to derive empirical DR rates for other ions, provided that good observations of several stages of ionization of O and Ne are available.
description: Ap.J. At Press
The Lip-lip equality is stable under blow-up
Creators: name: Schioppa, Andrea
Publisher: name: arXiv
Year: 2015
Subjects: subject: Metric Geometry (math.MG)
subject: Classical Analysis and ODEs (math.CA)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C23, 46J15, 58C20, 31E05

description: We show that at generic points blow-ups/tangents of differentiability spaces are still differentiability spaces; this implies that an analytic condition introduced by Keith as an inequality (and later proved to actually be an equality) passes to tangents. As an application, we characterize the $p$-weak gradient on iterated blow-ups of differentiability spaces.
description: minor corrections: change of normalization of the measures; The final version will appear in Calc. Var. PDE
Sonnenfleckenzeichnung Nr. 265.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.11.1992, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Growth-induced electron mobility enhancement at the LaAlO$_3$/SrTiO$_3$ interface
Creators: name: Fête, A.
name: Cancellieri, C.
name: Li, D.
name: Stornaiuolo, D.
name: Caviglia, A. D.
name: Gariglio, S.
name: Triscone, J. -M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the electronic properties of the 2D electron liquid present at the LaAlO$_3$/SrTiO$_3$ interface in series of samples prepared at different growth temperatures. We observe that interfaces fabricated at 650°C exhibit the highest low temperature mobility ($\approx 10000 \textrm{ cm}^2/\textrm{Vs}$) and the lowest sheet carrier density ($\approx 5\times 10^{12} \textrm{ cm}^{-2}$). These samples show metallic behavior and Shubnikov-de Haas oscillations in their magnetoresistance. Samples grown at higher temperatures (800-900°C) display carrier densities in the range of $\approx 2-5 \times 10^{13} \textrm{ cm}^{-2}$ and mobilities of $\approx 1000 \textrm{ cm}^2/\textrm{Vs}$ at 4K. Reducing their carrier density by field effect to $8\times 10^{12} \textrm{ cm}^{-2}$ lowers their mobilites to $\approx 50 \textrm{ cm}^2/\textrm{Vs}$ bringing the conductance to the weak-localization regime.
Sonnenfleckenzeichnung Nr. 116.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 15.05.1992, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 5.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 207.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.08.1992, 08:30, erstellt von Andrea Manna, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Accurate, Meshless Methods for Magneto-Hydrodynamics
Creators: name: Hopkins, Philip F.
name: Raives, Matthias J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Recently, we developed a pair of meshless finite-volume Lagrangian methods for hydrodynamics: the 'meshless finite mass' (MFM) and 'meshless finite volume' (MFV) methods. These capture advantages of both smoothed-particle hydrodynamics (SPH) and adaptive mesh-refinement (AMR) schemes. Here, we extend these to include ideal magneto-hydrodynamics (MHD). The MHD equations are second-order consistent and conservative. We augment these with a divergence-cleaning scheme, which maintains div*B~0 to high accuracy. We implement these in the code GIZMO, together with a state-of-the-art implementation of SPH MHD. In every one of a large suite of test problems, the new methods are competitive with moving-mesh and AMR schemes using constrained transport (CT) to ensure div*B=0. They are able to correctly capture the growth and structure of the magneto-rotational instability (MRI), MHD turbulence, and the launching of magnetic jets, in some cases converging more rapidly than AMR codes. Compared to SPH, the MFM/MFV methods exhibit proper convergence at fixed neighbor number, sharper shock capturing, and dramatically reduced noise, div*B errors, and diffusion. Still, 'modern' SPH is able to handle most of our tests, at the cost of much larger kernels and 'by hand' adjustment of artificial diffusion parameters. Compared to AMR, the new meshless methods exhibit enhanced 'grid noise' but reduced advection errors and numerical diffusion, velocity-independent errors, and superior angular momentum conservation and coupling to N-body gravity solvers. As a result they converge more slowly on some problems (involving smooth, slowly-moving flows) but more rapidly on others (involving advection or rotation). In all cases, divergence-control beyond the popular Powell 8-wave approach is necessary, or else all methods we consider will systematically converge to unphysical solutions.
description: 35 pages, 39 figures. MNRAS. Updated with published version. A public version of the GIZMO MHD code, user's guide, test problem setups, and movies are available at http://www.tapir.caltech.edu/~phopkins/Site/GIZMO.html
О ВЛИЯНИИ РЕЖИМОВ ПРИГОТОВЛЕНИЯ СМЕСЕЙ НА СВОЙСТВА МОДИФИЦИРОВАННОГО ЗОЛОЦЕМЕНТНОГО ВЯЖУЩЕГО
Creators: name: Рузметов, Фазлиддин
name: Амиров, Темирбек
name: Ярашев, Шахобиддин
Publisher: name: Zenodo
Year: 2023

description: В статье рассматриваются вопросы улучшения физико-технических свойств конструкционно-теплоизоляционного стенового материала на основе модифицированной золоцементной смеси в зависимости от режимов её приготовления. Показано, что приготовление золоцементной смеси в турбулентном смесителе-активаторе  позволяет  направленно регулировать прочностные характеристики золоцементного камня в зависимости от технологических параметров режима приготовления. При турбулентном перемешивании возникают значительные скоростные градиенты в смеси, снижается её вязкость и улучшаются тиксотропные свойства, а также повышается дисперсность системы.
Nurses’ Perceptions of the Impact of Animal-Assisted Therapy on Pediatric Oncology Patients
Creators: name: Cook, Kiersten
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: Animal-assisted therapy is gaining popularity in the acute care setting as a non-pharmacological palliative treatment for pediatric patients. This pilot study investigates nurses’ perceptions on the impact of animal assisted therapy in pediatric oncology patients using a qualitative approach. First, I conducted an integrative review of the literature, and designed a descriptive qualitative study to address the gaps in the literature. After receiving approval from the university internal review board, I interviewed two nurses who had previous experience in pediatric oncology nursing about their perceptions of animal-assisted therapy with this population.  Data analysis revealed an extremely positive response from nurses about animal-assisted therapy in their patients, suggesting this therapy is an effective way to help manage and treat cancer in children. Based on the findings from this pilot study, nurses perceive animal-assisted therapy as a highly worthwhile intervention that needs to be continued in both the inpatient pediatric oncology units and the outpatient pediatric oncology clinics. Due to the small sample size of this pilot study, further research is needed to expand on the benefits and potential risks of using animal-assisted therapy in pediatric oncology patients.
Sonnenfleckenzeichnung Nr. 150.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.06.1992, 08:15, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Supplemental material for “Prehistoric baseline reveals substantial decline of oyster reef condition in a Gulf of Mexico conservation priority area".
Creators: name: Hesterberg, Stephen G.
name: Herbert, Gregory S.
name: Pluckhahn, Thomas J.
name: Harke, Ryan M.
name: Al-Qattan, Nasser M.
name: C. Trevor Duke
name: Moore, Evan W.
name: Smith, Megan E.
name: Delgado, Alexander C.
name: Sampson, Christina P.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: Contains further description of study site, site map, relationship of hinge distance to shell height, all isotope profiles, and description of isotope profiles to morphological features of oyster hinges.
Effects of Monoassociation on Intestinal Physiology in Undernourished Mice
Creators: name: Ratley, Grace
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021
Subjects: subject: Nutrition
subject: Microbiology
subject: FOS: Biological sciences

description: Introduction: Severe undernutrition is a major cause of morbidity and mortality worldwide, accounting for 45% of all deaths in children from birth to 5 years of age. Refeeding is a critical step in stabilizing patients following severe calorie restriction, but it is a delicate process and weight gain varies among patients. Recent studies have suggested a role for the gut microbiota in the recovery from severe undernutrition—specifically, in the development of intestinal pathologies such as villus blunting, increased gut permeability, and inefficient absorption of calories and nutrients.  In this study, we sought to characterize the effects of a specific member of the gut microbiota, Ruminococcus gnavus, on intestinal function during severe undernutrition. 
Methods: 9-week-old, germ-free (GF) C57BL/6S mice (n=16) were colonized with either specific pathogen free (SPF) fecal slurries or with R. gnavus and were assigned to either a 60% calorie restricted diet or ad lib feeding. Mice were housed individually, and their weights were recorded daily.  To assess the effect of colonization on intestinal anatomy, the small intestines and segments of the colon were collected at tissue harvest. Cecal contents were also collected, and bomb calorimetry was used to determine the energy in each sample. Transverse cryosections of the colon were stained with Alcian blue/PAS to assess mucus production. A 4 kDa FITC assay was used to determine changes in gut permeability. One way ANOVA and Kruskal-Wallis tests, where appropriate, were used to detect group differences.
Results: Monoassociation with R. gnavus was successfully confirmed by qPCR. There were no significant differences in weight loss or permeability between monoassociated and SPF mice. Calorie restricted monoassociated mice had significantly reduced ability to extract energy from food in the small intestines (P<0.05; ANOVA), despite having significantly longer villi compared to SPF mice (P<0.01; ANOVA). There was insufficient data to assess differences in mucus production between groups.
Conclusion: Our data does not support the hypothesis that R. gnavus monoassociation is protective against the intestinal pathology associated with severe undernutrition. However, future studies should investigate the interactions between R. gnavus and other enteric microorganisms to better understand it’s role in gut health and severe undernutrition.
Sonnenfleckenzeichnung Nr. 284.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.12.1992, 09:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Impurity Effects on Caroli-de Gennes-Matricon Mode in a Vortex Core in Superconductors
Creators: name: Masaki, Yusuke
name: Kato, Yusuke
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a scheme of Gor'kov Green's functions to treat impurity effects on Caroli-de Gennes-Matricon (CdGM) mode in superconductors (SCs) by improving the Kopnin-Kravtsov scheme with respect to the coherence factors and applicability to various SCs. We can study the impurity effects keeping the discreteness of the energy spectrum in contrast to the quasiclassical theory. We can thus apply this scheme to the SCs with the small quasiclassical parameter $k_{\mathrm{F}}ξ_{0}$ (which is the product of the Fermi wavenumber $k_{\mathrm{F}}$ and the coherence length $ξ_{0}$ in pure SC at zero temperature) and/or superclean regime $Δ_{\mathrm{mini}} τ\gg1$ ($Δ_{\mathrm{mini}}$ and $τ$ denote, respectively, the level spacing of the CdGM mode called minigap and the relaxation time for CdGM mode and we take $\hbar =1$). We investigate the impurity effects as a white noise for a vortex in an s-wave SC and two types of vortices in a chiral p-wave SC, for various values of the quasiclassical parameters and impurity strengths (from moderately clean regime to superclean regime), and confirm the validity of this scheme.
description: 8 pages, 6 figures
Sonnenfleckenzeichnung Nr. 221.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.09.1992, 07:45, erstellt von Michele Bianda, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Intermediate fixed point in a Luttinger liquid with elastic and dissipative backscattering
Creators: name: Altland, Alexander
name: Gefen, Yuval
name: Rosenow, Bernd
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In a recent work [Phys. Rev. Lett. {\bf 108}, 136401 (2012)] we have addressed the problem of a Luttinger liquid with a scatterer that allows for both coherent and incoherent scattering channels. We have found that the physics associated with this model is qualitatively different from the elastic impurity setup analyzed by Kane and Fisher, and from the inelastic scattering scenario studied by Furusaki and Matveev, thus proposing a new paradigmatic picture of Luttinger liquid with an impurity. Here we present an extensive study of the renormalization group flows for this problem, the fixed point landscape, and scaling near those fixed points. Our analysis is non-perturbative in the elastic tunneling amplitudes, employing an instanton calculation in one or two of the available elastic tunneling channels. Our analysis accounts for non-trivial Klein factors, which represent anyonic or fermionic statistics. These Klein factors need to be taken into account due to the fact that higher order tunneling processes take place. In particular we find a stable fixed point, where an incoming current is split ${1 \over 2}$ - $1\over 2$ between a forward and a backward scattered beams. This intermediate fixed point, between complete backscattering and full forward scattering, is stable for the Luttinger parameter $g<1$.
description: 21 pages, 12 figures, typos corrected
On the Stability of Einstein Static Universe in Doubly General Relativity Scenario
Creators: name: Khodadi, M.
name: Heydarzade, Y.
name: Nozari, K.
name: Darabi, F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: By presenting a relation between average energy of the ensemble of probe photons and energy density of the Universe, in the context of {\it gravity's rainbow} or {\it doubly general relativity} scenario, we introduce a rainbow FRW Universe model. By analyzing the fixed points in flat FRW model modified by two well known rainbow functions, we find that the finite time singularity avoidance (i.e. Big-Bang) may still remain as a problem. Then, we follow the "Emergent Universe" scenario in which there is no beginning of time and consequently there is no Big-Bang singularity. Moreover, we study the impact of a high energy quantum gravity modifications related to the gravity's rainbow on the stability conditions of an "Einstein static Universe" (ESU). We find that independent of a particular rainbow function, the positive energy condition dictates a positive spatial curvature for the Universe. In fact, without raising a nonphysical energy condition in the quantum gravity regimes, we can address an agreement between gravity's rainbow scenario and basic assumption of modern version of "Emergent Universe". We show that in the absence and presence of an energy-dependent cosmological constant $Λ(ε)$, a stable Einstein static solution is available versus the homogeneous and linear scalar perturbations under the variety of obtained conditions. Also, we explore the stability of ESU against the vector and tensor perturbations.
description: 18 pages, Revision
Sonnenfleckenzeichnung Nr. 300.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.12.1992, 11:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Effects of Inorganic Arsenic on the Epithelial Mesenchymal Transition, Migration, and Invasion of Placental Cells
Creators: name: Meakin, Cassandra
name: Avula,  Vennela
name: Szilagyi, John
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Prenatal exposure to inorganic arsenic (iAs) results in birth defects, low birth weight, increased risk of childhood respiratory infections, and long-term effects such as neurological disorders and cancers later in life. The negative health effects of fetal iAs exposure may result from the direct interaction between the placenta and iAs. The placenta supports proper fetal development by promoting the exchange of nutrients and waste between the fetal and maternal blood supplies. Integral in this function, trophoblasts invade the decidualized endometrium, and migrate towards the maternal spiral arteries, and promote their remodeling to widen the lumen, allow a high rate of blood flow. In a healthy pregnancy, trophoblast invasion and arterial remodeling extends through the decidua and inner myometrium. These invading trophoblasts, termed extravillous trophoblasts (EVTs), undergo an epithelial-mesenchymal transition (EMT). EMT, migration, and invasion have most commonly been studied under the context of iAs-induced carcinogenesis. Studies have yet to examine, however, the effect of iAs on these processes in trophoblast cell lines. To this end, we collected data on the migration, invasion, and gene expression of HTR8/SVneo cells as well as the gene expression of JEG-3 cells and placental explants in response to iAs treatments. We observed an increase in migration and invasion in response to 0.5 uM and 1.0 uM iAs treatment in HTR8/SVneo cells. Additionally, gene expression of Nuclear Factor Kappa B Subunit 1 (NFKB1) and Transforming Growth Factor Beta 1 (TGFB1), two genes previously studied to be associated with an inhibition of trophoblast invasion, was suppressed in response to iAs exposure.  These findings support the hypothesis that iAs exposure may negatively impact maternal and fetal health during pregnancy by altering migration and invasion of EVTs in the placenta. Moreover, by identifying these pathways in trophoblasts perturbed by iAs, this will provide the basis for future research to identify preventative measures to decrease risk of toxicity during pregnancy.
Sonnenfleckenzeichnung Nr. 240.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.10.1992, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 297.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.12.1992, 13:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
An Extension of Godunov SPH: Application to Negative Pressure Media
Creators: name: Sugiura, Keisuke
name: Inutsuka, Shu-ichiro
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The modification of Smoothed Particle Hydrodynamics (SPH) method with Riemann Solver is called Godunov SPH. We further extend the Godunov SPH to the description of a medium with negative pressure. Under certain circumstances, the SPH method shows an unphysical instability that results in particle clustering. This instability is called the tensile instability. The tensile instability occurs in positive pressure regions in a regular fluid if a very large number of neighbor particles are used with certain shapes of kernel functions, and it is significant in negative pressure regions that emerge in stretched elastic bodies. We must suppress the tensile instability in SPH for calculations of elastic bodies. In this study, we develop a new technique to remove the tensile instability by extending the Godunov SPH method and conducting a linear stability analysis of the equation of motion for the extended method. We find that the tensile instability can be suppressed by choosing an appropriate order of interpolation in the equation of motion of the Godunov SPH method. We also derive an analytic solution for a Riemann solver for a simple equation of state of an elastic body, and construct a Godunov SPH method for the equation of state that allows negative pressure.
description: LaTeX file in elsarticle style, 40 pages, 25 figures, accepted to Journal of Computational Physics
Sonnenfleckenzeichnung Nr. 55.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.03.1992, 10:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Prevalence of Refractive Error in Vientiane Province, Lao People’s Democratic Republic
Creators: name: Patel, Chirag
name: Tan, Yiran
name: Nygaard, Stephen
name: Guo, Brad
name: Carrillo, Cesar
name: Burgess, Jerida
name: Souksamone, Kitar
name: Nouansavanh, Kham Od
name: Casson, Robert
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Computational Biology

description: To determine the prevalence of adult refractive error and associated risk factors in the Vientiane Province of the Lao People’s Democratic Republic. Population-based, cross-sectional ophthalmic survey of individuals ≥ 40 years of age in Vientiane Province. Suitable refractive data was available in 1058 individuals. Demographic data, which included age and gender, was obtained from all participants. Smoking status, presence of diabetes and hypertension was also recorded. The ophthalmic examination included autorefraction, grading of cataract, applanation tonometry and ultrasound pachymetry for ocular biometry, including axial length. Mean refractive error measured −0.36 diopters (D) (standard deviation [SD], 1.41) and mean cylindrical error measured −0.33 D (SD 0.95). Myopia ≤ −0.5 D and ≤ −5.0 D occurred in 53.2% (95% confidence interval [CI]: 43.7 to 62.6) and 2.0% (95% CI: 0.4 to 3.6) of participants, respectively. There was a correlation between myopia and both age and higher grading of nuclear cataract (p < .001). Hyperopia ≥ +0.5 D was present in 26.4% of participants and was associated with increasing age (p < .001). Astigmatism was present in 55.8% (95% CI: 51.5 to 60.2) of the population and was associated with increased nuclear cataract (p < .001). Urban participants had a reduced prevalence of myopia compared with rural participants. Myopia was associated with younger age and a higher grade of nuclear cataract. The prevalence of myopia in the adult population of Vientiane Province was higher than that reported in neighbouring Asian regions and contributed to low vision.
Sonnenfleckenzeichnung Nr. 123.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.05.1992, 07:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 282.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.12.1992, 09:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A 3D U-net for Segmentation of Subcortical Structures in MR Images of 12 and 24 month-old infants
Creators: name: Tapp-Hughes, Nicholas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Recent research has determined links between the development of some neurodevelopmental disorders, including Autism Spectrum Disorder (ASD), and the morphometry of subcortical brain structures in children aged 12 and 24 months old, which is usually obtained via segmentation of a Magnetic Resonance (MR) image. Deep-learning based methods, such as the u-net, have emerged as the fastest way to compute segmentations with admissible accuracy. I have constructed a segmentation pipeline with a processing step and neural network step using a 3D u-net model trained on processed data from 830 automatically segmented images and 27 manually segmented images. The model is trained with a loss function that has structure volume and surface accuracy considerations. The segmentation pipeline is available as an open source software on GitHub. The model is validated on a set of 5 manually segmented images and obtains moderately good results compared to the state-of-the-art.
Supplemental material for “Prehistoric baseline reveals substantial decline of oyster reef condition in a Gulf of Mexico conservation priority area"
Creators: name: Hesterberg, Stephen G.
name: Herbert, Gregory S.
name: Pluckhahn, Thomas J.
name: Harke, Ryan M.
name: Al-Qattan, Nasser M.
name: C. Trevor Duke
name: Moore, Evan W.
name: Smith, Megan E.
name: Delgado, Alexander C.
name: Sampson, Christina P.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: Contains further description of study site, site map, relationship of hinge distance to shell height, all isotope profiles, and description of isotope profiles to morphological features of oyster hinges.
First Parallax Measurements Towards a 6.7 GHz Methanol Maser with the Australian Long Baseline Array - Distance to G339.884-1.259
Creators: name: Krishnan, V.
name: Ellingsen, S. P.
name: Reid, M. J.
name: Brunthaler, A.
name: Sanna, A.
name: McCallum, J.
name: Reynolds, C.
name: Bignall, H. E.
name: Phillips, C. J.
name: Dodson, R.
name: Rioja, M.
name: Caswell, J. L.
name: Chen, X.
name: Dawson, J. R.
name: Fujisawa, K.
name: Goedhart, S.
name: Green, J. A.
name: Hachisuka, K.
name: Honma, M.
name: Menten, K.
name: Shen, Z. Q.
name: Voronkov, M. A.
name: Walsh, A. J.
name: Xu, Y.
name: Zhang, B.
name: Zheng, X. W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have conducted the first parallax and proper motion measurements of 6.7 GHz methanol maser emission using the Australian Long Baseline Array (LBA). The parallax of G339.884$-$1.259 measured from five epochs of observations is 0.48$\pm $0.08 mas, corresponding to a distance of $2.1^{+0.4}_{-0.3}$ kpc, placing it in the Scutum spiral arm. This is consistent (within the combined uncertainty) with the kinematic distance estimate for this source at 2.5$\pm $0.5 kpc using the latest Solar and Galactic rotation parameters. We find from the Lyman continuum photon flux that the embedded core of the young star is of spectral type B1, demonstrating that luminous 6.7 GHz methanol masers can be associated with high-mass stars towards the lower end of the mass range.
Sonnenfleckenzeichnung Nr. 217.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.09.1992, 06:30, erstellt von Michele Bianda, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Elucidating Enhancer Function of Human Chromosome 19 Fragments in AAV Vectors for Hemophilia Treatment
Creators: name: Workley, Luke
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Adeno-associated viruses (AAV) are a common gene therapy tool used to deliver custom transgenes to specific targets. Utilizing AAV, researchers engineer non-pathogenic viral vectors to supplement insufficient gene products. Genetic illnesses characterized by a single gene producing mutant proteins, like hemophilia, are candidates for gene therapy. One restriction to AAV mediated gene therapy is the virus’ limited capsid capacity which can package genomes up to approximately 4.7 kilobase-pairs. Any cis-regulatory elements (promoters, enhancers, etc.) included in AAV vectors must be short yet efficacious. A small fragment of human chromosome 19 (Chr19) has shown promoter and transcriptional enhancer activity in previous studies. Our study investigated the efficacy of multiple enhancer Chr19 fragments on AAV vector transduction for hemophilia treatment. To verify vector construction, performance, and liver specificity, we produced viruses containing Chr19 fragments coupled with a firefly luciferase reporter gene then infected human embryonic kidney cells (HEK-293) and human liver cells (Huh7) cells. Transduction efficiency was significantly higher in cells infected by AAV containing multiple Chr19 fragments than cells infected by AAV containing other known promoters.  To explore the efficacy of Chr19 fragments on AAV vector transduction in vivo, we imaged luciferase activity in infected mice. Mice injected with vectors containing multiple Chr19 fragments showed slightly increased liver transduction compared to mice with one or no Chr19 fragments. Additional iterations of this study replaced the luciferase reporter gene with human blood clotting factor IX (hFIX). Our data suggest a liver-specific increase in transgene expression mediated by multiple Chr19 fragments.
Energetics and control of ultracold isotope-exchange reactions between heteronuclear dimers in external fields
Creators: name: Tomza, Michał
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We show that isotope-exchange reactions between ground-state alkali-metal, alkaline-earth-metal, and lanthanide heteronuclear dimers consisting of two isotopes of the same atom are exothermic with an energy change in the range of 1-8000$\,$MHz thus resulting in cold or ultracold products. For these chemical reactions there are only one rovibrational and at most several hyperfine possible product states. The number and energetics of open and closed reactive channels can be controlled by the laser and magnetic fields. We suggest a laser-induced isotope- and state-selective Stark shift control to tune the exothermic isotope-exchange reactions to become endothermic thus providing the ground for testing models of the chemical reactivity. The present proposal opens the way for studying the state-to-state dynamics of ultracold chemical reactions beyond the universal limit with a meaningful control over the quantum states of both reactants and products.
description: 5 pages, 1 figure, 1 table
Sonnenfleckenzeichnung Nr. 180.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.07.1992, 06:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Facilitators and Barriers to Using Selective Laser Trabeculoplasty (SLT) as First-Line Treatment for Glaucoma: Physician and Patient Views Gathered during an Exploratory Descriptive Qualitative Study
Creators: name: Chen, Yize
name: Lohfeld, Lynne
name: Song, Di
name: Pak, Clara
name: Gong, Xia
name: Zhou, Wenzhe
name: Liang, Yuanbo
name: Congdon, Nathan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences

description: To explore the perception of selective laser trabeculoplasty (SLT) among physicians and patients and the acceptance of using SLT as first-line treatment for glaucoma. Exploratory descriptive qualitative study based on semi-structured interviews with glaucoma specialists and patients in two eye hospital of Zhejiang and Guangdong Provinces, China. Data were analyzed using the thematic analysis framework approach. 11 glaucoma specialists and 12 glaucoma patients were interviewed. Four themes were identified in the data: Physicians’ preferences for treatment types, patient views on treatment types, decision-making during the physician-patient encounter and feasibility of SLT as a first-line therapy. Advantages of SLT include safety and repeatability with limited side effects. However, concerns about the durability of the effect of the treatment were often mentioned by both physicians and patients. Some factors such as practice preference, personal motivation and patient characteristics may influence treatment choice. Most patients lack knowledge about SLT and hold high expectations of their treatments. Physicians report insufficient evidence supporting the use of SLT as first line therapy. Physicians report the need for locally relevant, evidence-based guidelines regarding the use of SLT in the treatment of glaucoma. SLT was suggested as the first-line treatment of glaucoma due to its reliable efficacy and potential advantage. Results from our study offer important insight into barriers of increasing the uptake of SLT, which also provides some guidance for the use of SLT in the future.
Sonnenfleckenzeichnung Nr. 247.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.10.1992, 08:15, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1992

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)