cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Peeking beneath the precision floor -- II. Probing the chemo-dynamical histories of the potential globular cluster siblings, NGC 288 and NGC 362
Creators: name: Monty, Stephanie
name: Yong, David
name: Massari, Davide
name: McKenzie, Madeleine
name: Myeong, GyuChul
name: Buder, Sven
name: Karakas, Amanda I.
name: Freeman, Ken C.
name: Marino, Anna F.
name: Belokurov, Vasily
name: Evans, N. Wyn
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The assembly history of the Milky Way (MW) is a rapidly evolving subject, with numerous small accretion events and at least one major merger proposed in the MW's history. Accreted alongside these dwarf galaxies are globular clusters (GCs), which act as spatially coherent remnants of these past events. Using high precision differential abundance measurements from our recently published study, we investigate the likelihood that the MW clusters NGC 362 and NGC 288 are galactic siblings, accreted as part of the Gaia-Sausage-Enceladus (GSE) merger. To do this, we compare the two GCs at the 0.01 dex level for 20+ elements for the first time. Strong similarities are found, with the two showing chemical similarity on the same order as those seen between the three LMC GCs, NGC 1786, NGC 2210 and NGC 2257. However, when comparing GC abundances directly to GSE stars, marked differences are observed. NGC 362 shows good agreement with GSE stars in the ratio of Eu to Mg and Si, as well as a clear dominance in the r- compared to the s-process, while NGC 288 exhibits only a slight r-process dominance. When fitting the two GC abundances with a GSE-like galactic chemical evolution model, NGC 362 shows agreement with both the model predictions and GSE abundance ratios (considering Si, Ni, Ba and Eu) at the same metallicity. This is not the case for NGC 288. We propose that the two are either not galactic siblings, or GSE was chemically inhomogeneous enough to birth two similar, but not identical clusters with distinct chemistry relative to constituent stars.
description: Second paper in a series. Accepted for publication by MNRAS, 17 pages, 11 figures. Minor corrections and updates made after helpful feedback from the community, thank you!
Spectral properties of Type Ia supernovae up to z~0.3
Creators: name: Nordin, J.
name: Ostman, L.
name: Goobar, A.
name: Amanullah, R.
name: Nichol, R. C.
name: Smith, M.
name: Sollerman, J.
name: Bassett, B. A.
name: Frieman, J.
name: Garnavich, P. M.
name: Leloudas, G.
name: Sako, M.
name: Schneider, D. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Aims: Spectroscopic observations of Type Ia supernovae obtained at the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT), in conjunction with the SDSS-II Supernova Survey, are analysed. We use spectral indicators measured up to a month after the lightcurve peak luminosity to characterise the supernova properties, and examine these for potential correlations with host galaxy type, lightcurve shape, colour excess, and redshift. Methods: Our analysis is based on 89 Type Ia supernovae at a redshift interval z = 0.05 - 0.3, for which multiband SDSS photometry is available. A lower-z spectroscopy reference sample was used for comparisons over cosmic time. We present measurements of time series of pseudo equivalent widths and line velocities of the main spectral features in Type Ia supernovae. Results: Supernovae with shallower features are found predominantly among the intrinsically brighter slow declining supernovae. We detect the strongest correlation between lightcurve stretch and the Si ii 4000 absorption feature, which also correlates with the estimated mass and star formation rate of the host galaxy. We also report a tentative correlation between colour excess and spectral properties. If confirmed, this would suggest that moderate reddening of Type Ia supernovae is dominated by effects in the explosion or its immediate environment, as opposed to extinction by interstellar dust.
description: Accepted for publication in A&A
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿Ð»Ð°Ð½Ð° Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²Ð° ÑÐ°Ð±Ð¾Ñ Ð½Ð° Ð²ÑÑÐ¾ÑÐµ Ð±ÐµÐ· Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÑÐµÐ´ÑÑÐ² Ð¿Ð¾Ð´Ð¼Ð°ÑÐ¸Ð²Ð°Ð½Ð¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The development of a plan for the production of works at height wihout the use of padding means
Creators: name: ÐÐ°ÑÐ¸Ð¿Ð¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
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: 2018
Subjects: ÑÐ°Ð±Ð¾ÑÑ Ð½Ð° Ð²ÑÑÐ¾ÑÐµ
ÐºÐ°Ð½Ð°ÑÐ½ÑÐ¹ Ð´Ð¾ÑÑÑÐ¿
Ð¿ÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½ÑÐ¹ Ð°Ð»ÑÐ¿Ð¸Ð½Ð¸Ð·Ð¼
ÑÐ¸ÑÑÐµÐ¼Ð° Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸
ÑÑÑÐ°Ñ Ð¾Ð²Ð¾ÑÐ½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°
Ð°Ð½ÐºÐµÑÐ½Ð¾Ðµ ÐºÑÐµÐ¿Ð»ÐµÐ½Ð¸Ðµ
Ð¿Ð»Ð°Ð½ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²Ð° ÑÐ°Ð±Ð¾Ñ
Ð°Ð½ÐºÐµÑÐ½Ð°Ñ Ð»Ð¸Ð½Ð¸Ñ
Ð½Ð°Ð³ÑÑÐ·ÐºÐ°
Ð¾Ñ ÑÐ°Ð½Ð° ÑÑÑÐ´Ð°
works at the height
rope
industrial alpinism
security system
insurance system
anchor mounting
work plan
anchor line
load
labor protection

description: Ð Ð¾ÑÐ½Ð¾Ð²Ðµ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð»ÐµÐ¶Ð¸Ñ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐµÐºÑÑÐµÐ³Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐ¸ ÑÐ°Ð±Ð¾ÑÐ°Ñ Ð½Ð° Ð²ÑÑÐ¾ÑÐµ Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ ÑÐ¸ÑÑÐµÐ¼Ñ ÐºÐ°Ð½Ð°ÑÐ½Ð¾Ð³Ð¾ Ð´Ð¾ÑÑÑÐ¿Ð°. ÐÐ»Ð°Ð³Ð¾Ð´Ð°ÑÑ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½Ð¾Ð¼Ñ ÑÐ°Ð·Ð±Ð¾ÑÑ Ð²ÑÐµÑ ÑÑÐ¾ÑÐ¾Ð½ ÑÑÐµÑÑ ÑÐ¾Ð·Ð´Ð°ÑÑÑÑ ÑÐ²Ð¾Ð¹ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð²ÑÐ±Ð¾ÑÐ° ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² ÑÑÑÐ°ÑÐ¾Ð²Ð¾ÑÐ½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð² ÑÐ²Ð¾Ñ Ð¾ÑÐµÑÐµÐ´Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÑÐµÑÑÑ Ð½Ð° ÑÐµÐ°Ð»ÑÐ½Ð¾ ÑÑÑÐµÑÑÐ²ÑÑÑÐµÐ¼ Ð¾Ð±ÑÐµÐºÑÐµ. ÐÑÐ¾Ð³Ð¾Ð¼ ÑÐ²Ð»ÑÐµÑÑÑ Ð°ÑÐ³ÑÐ¼ÐµÐ½ÑÐ°ÑÐ¸Ñ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð²ÑÐ±ÑÐ°Ð½Ð½ÑÑ ÑÐ·Ð»Ð¾Ð² ÑÐ¸ÑÑÐµÐ¼Ñ Ð¸ ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð² ÐµÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ.
description: The basis of this work is an analysis of the current security for work at height using a cable access system. Due to detailed analysis of all sides of the sphere, an algorithm is created for selecting the elements of the safety system, which in turn is applied to the actual object. The result is the argumentation of the quality of the selected nodes of the system and the ways to use it.
Development of molecular markers and cloning of genes involved in the biosynthesis of monoterpenes in Lavandula
Creators: name: Adal, Ayelign Mengesha
Publisher: name: University of British Columbia
Year: 2019

description: Several species of the genus Lavandula (lavenders) are important plants grown for their essential oils (EO), which find extensive applications in cosmetics, personal care products and alternative medicines. The EO of these plants is mainly constituted of monoterpenes, the C₁₀ class of terpenoids. In this study, we investigated three aspects of lavenders using advanced genomic resources derived from EO-producing tissues of these plants. Firstly, we developed diagnostic simple sequence repeat (SSR) markers from expressed sequence tag (EST) databases to delineate closely related species. Over 250 SSRs (≥ 18 bp) were developed from L. angustifolia and L. x intermedia ESTs. Thirty-one EST-SSRs were validated, 24 of which had a strong discrimination power in donor plant species, and a considerable transferability into related species. Secondly, we identified and functionally characterized cDNAs encoding geranyl pyrophosphate synthase (GPPS), which produces GPP, the linear precursor to all regular monoterpenes. Lavender GPPS is a heterodimeric protein composed of a small subunit (LiGPPS.SSU1), and a large subunit (LiGPPS.LSU). Recombinant LiGPPS.SSU1 interacts with LiGPPS.LSU, catalyzing the condensation of isopentenyl pyrophosphate (IPP) and dimethylallyl pyrophosphate (DMAPP) to produce GPP. Recombinant LiGPPS.SSU1 also interacts with lavender and N. benthamiana geranylgeranyl pyrophosphate synthase (GGPPS; the enzyme responsible for synthesis of GGPP, the linear precursor to diterpenes), modifying its activity to form GPP. Transcript levels for LiGPPS.SSU1 and LiGPPS.LSU parallel total monoterpene concentration, with more transcripts present in flowers where most of lavender EO accumulates. Finally, we cloned and functionally characterized lavender cDNAs encoding two monoterpene synthase genes, 3-carene synthase (Li3CARS) and S-linalool synthase (LiS-LINS), in vitro. Recombinant Li3CARS and LiS-LINS proteins converted GPP into 3-carene and S-linalool, respectively. Li3CARS transcripts and the levels of 3-carene were up-regulated by methyl jasmonate, suggesting a potential defensive role for 3-carene. The transcripts for LiS-LINS were also highly expressed in flowers, where S-linalool accumulates.
Shadow Energy Functionals and Potentials in Born-Oppenheimer Molecular Dynamics
Creators: name: Niklasson, Anders M. N.
name: Negre, Christian F. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In Born-Oppenheimer molecular dynamics (BOMD) simulations based on density functional theory (DFT), the potential energy and the interatomic forces are calculated from an electronic ground state density that is determined by an iterative self-consistent field optimization procedure, which in practice never is fully converged. The calculated energies and the forces are therefore only approximate, which may lead to an unphysical energy drift and instabilities. Here we discuss an alternative shadow BOMD approach that is based on a backward error analysis. Instead of calculating approximate solutions for an underlying exact regular BO potential, we do the opposite. Instead, we calculate the exact electron density, energies, and forces, but for an underlying approximate shadow BO potential. In this way the calculated forces are conservative with respect to the shadow potential and generate accurate molecular trajectories with long-term energy stability. We show how such shadow BO potentials can be constructed at different levels of accuracy as a function of the integration time step, dt, from the minimization of a sequence of systematically improvable, but approximate, shadow energy density functionals. For each functional there is a corresponding ground state BO potential. These pairs of shadow energy functionals and potentials are higher-level generalizations of the original "0th-level" shadow energy functionals and potentials used in extended Lagrangian BOMD [Eur. Phys. J. B vol. 94, 164 (2021)]. The proposed shadow energy functionals and potentials are useful only within this dynamical framework, where also the electronic degrees of freedom are propagated together with the atomic positions and velocities. The theory is general and can be applied to MD simulations using approximate DFT, Hartree-Fock or semi-empirical methods, as well as to coarse-grained flexible charge models.
description: 16 pages, 3 figures
Relative production rates of $^{6}$He, $^{9}$Be, $^{12}$C in astrophysical environments
Creators: name: de Diego, R.
name: Garrido, E.
name: Fedorov, D. V.
name: Jensen, A. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We assume an environment of neutrons and $α$-particles of given density and temperature where nuclear syntheses into $^{6}$He, $^{9}$Be and $^{12}$C are possible. We investigate the resulting relative abundance as a function of density and temperature. When the relative abundance of $α$-particles $Y_α$ is between 0.2 and 0.9, or larger than 0.9, the largest production is $^{9}$Be or $^{12}$C, respectively. When $Y_α<0.2$ $^{6}$He is mostly frequently produced for temperatures above about 2 GK whereas the $^{9}$Be production dominates at smaller temperatures.
description: 5 pages, 4 figures
title: Ð¡Ð¸ÑÑÐµÐ¼Ð° ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ¸Ñ Ð¾ÑÐ³Ð°Ð½Ð¾Ð² ÐÐ²ÑÐ°Ð·Ð¸Ð¹ÑÐºÐ¾Ð³Ð¾ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÐ·Ð°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The system of goverment of the Eurasion Economic Union
Creators: name: ÐÐ¾ÐºÐ³Ð¸ÐµÐ², ÐÐµÑÐ´Ð°Ð½
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: 2023
Subjects: ÑÐ¸ÑÑÐµÐ¼Ð°
ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ²Ð¾
Ð¾ÑÐ³Ð°Ð½Ñ
Ð¸Ð½ÑÐµÐ³ÑÐ°ÑÐ¸Ñ
ÐÐ²ÑÐ°Ð·Ð¸Ð¹ÑÐºÐ¸Ð¹ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ¾ÑÐ·
ÑÑÐ´
system
management
bodies
integration
Eurasian economic union
court

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ¸Ñ Ð¾ÑÐ³Ð°Ð½Ð¾Ð²Â  ÐÐ²ÑÐ°Ð·Ð¸Ð¹ÑÐºÐ¾Ð³Ð¾ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÐ·Ð°. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð¿ÑÐµÐ´Ð¿Ð¾ÑÑÐ»ÐºÐ¸ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ ÐÐ²ÑÐ°Ð·Ð¸Ð¹ÑÐºÐ¾Ð³Ð¾ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÐ·Ð°. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½ÑÂ  Ð¿ÑÐ°Ð²Ð¾Ð²ÑÐµ Ð¾ÑÐ½Ð¾Ð²Ñ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ¸Ñ Ð¾ÑÐ³Ð°Ð½Ð¾Ð² ÐÐ²ÑÐ°Ð·Ð¸Ð¹ÑÐºÐ¾Ð³Ð¾Â  ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÐ·Ð°. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð±ÑÐ»Ð¸ ÑÐ°ÑÐºÑÑÑÑÂ  ÑÐ¿Ð¾ÑÐ¾Ð±Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÑÑÐºÐ¾Ð²Ð¾Ð´ÑÑÐ¸Ñ Ð¾ÑÐ³Ð°Ð½Ð¾Ð² ÐÐ²ÑÐ°Ð·Ð¸Ð¹ÑÐºÐ¾Ð³Ð¾ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÐ·Ð°.
description: This work is devoted to the consideration of the system of governing bodiesÂ  of the Eurasian Economic Union. The paper analyzes the prerequisites for theÂ  creation of the Eurasian Economic Union. As a result, the legal foundations of theÂ  functioning of the system of governing bodies of the Eurasian Economic Union wereÂ  investigated. Based on the received material, the ways of optimizing the activities ofÂ  the governing bodies of the Eurasian Economic Union were revealed.
Design of Transport Layer Based Hybrid Covert Channel Detection Engine
Creators: name: K, Anjan
name: Abraham, Jibi
name: Jadhav, Mamatha
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Computer network is unpredictable due to information warfare and is prone to various attacks. Such attacks on network compromise the most important attribute, the privacy. Most of such attacks are devised using special communication channel called "Covert Channel". The word "Covert" stands for hidden or non-transparent. Network Covert Channel is a concealed communication path within legitimate network communication that clearly violates security policies laid down. The non-transparency in covert channel is also referred to as trapdoor. A trapdoor is unintended design within legitimate communication whose motto is to leak information. Subliminal channel, a variant of covert channel works similarly except that the trapdoor is set in a cryptographic algorithm. A composition of covert channel with subliminal channel is the "Hybrid Covert Channel". Hybrid covert channel is homogenous or heterogeneous mixture of two or more variants of covert channels either active at same instance or at different instances of time. Detecting such malicious channel activity plays a vital role in removing threat to the legitimate network. In this paper, we present a study of multi-trapdoor covert channels and introduce design of a new detection engine for hybrid covert channel in transport layer visualized in TCP and SSL.
description: 8 pages, 4 figures, Journal
ab-plane tilt angles in REBCO conductors
Creators: name: Lu, Jun
name: Xin, Yan
name: Zhang, Yifei
name: Bai, Hongyu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Critical current (Ic) of REBCO tapes is strongly aniso-tropic with respect to the orientation of the magnetic field. Usually, Ic is at maximum when the ab-plane of the REBCO crystal is parallel to the magnetic field. In commercial REBCO tapes, it is commonly assumed that the ab-plane is coincide with the tape plane. While in fact, the ab-plane is near but slightly tilted from the tape plane in the transverse direction. To accurately measure Ic as a function of the field angle θ , which is defined as the angle between ab-plane and the magnetic field direction, and to design and fabricate REBCO mag-net coils based on the measured Ic(angle), it is important to measure the tilt angle. In this work, we used x-ray diffraction (XRD) to measure the tilt angles at room temperature for a large number of REBCO conductors made by SuperPower Inc. Transmission electron mi-croscopy (TEM) was also used to investigate the origin of this tilt. The measured data are presented, and the measurement uncer-tainty is discussed.
description: 4 pages, 7 figures
Resultados Clínicos e Reportados pelos Doentes Após Cirurgia de Catarata
Creators: name: Neri, Guilherme
name: Vergamota, Ana
name: Marques, Cláudia
name: Carapinha, Carla
name: Pasarinho, Ana
name: Pedro Silva, José
Publisher: name: Lusiadas Scientific Journal
Year: 2020

description: Introdução Cerca de 90% das nossas interações com o mundo exterior dependem da visão. A cirurgia de catarata é o procedimento cirúrgico mais realizado mundialmente, sendo a catarata a principal causa de cegueira. Atualmente não só a visão para longe, mas também para distância intermedia e para perto, são fundamentais para a vida quotidiana e profissional. As lentes multifocais permitem a correção da visão após cirurgia de catarata para várias distâncias, superando em termos funcionais as lentes monofocais, tradicionalmente utilizadas no contexto de cirurgia de catarata. Métodos Estudo prospetivo não randomizado que incluí 314 doentes submetidos a cirurgia de catarata por facoemulsificação com implantação bilateral do mesmo tipo de lente intra-ocular (LIO). Aos 3 meses pós-operatórios da cirurgia do segundo olho os doentes foram avaliados em termos de acuidade visual (para longe, distância intermédia e para perto), de sensibilidade ao contraste e visão cromática, estereopsia para longe e para perto e preencheram um questionário de satisfação visual desenvolvido pelos autores. Resultados Estudo que incluiu 628 LIO (de 314 doentes), sendo 75,5% do sexo feminino, idade média 65,4 anos (±8,9) e a potência média de LIO implantada +21,8D (±3,3). O estudo contém 5 designs diferentes de LIO: multifocais (24,69%), acomodativas (9,23%), trifocais (24,68%), foco alargado (6,21%) e monofocais refractivas (11,46%). A acuidade visual (AV) para longe e intermédia foi superior a 1,0 em 98,05% e 82,09%, respectivamente; a AV para perto foi superior a J1 em 68,81% dos doentes. A percentagem de doentes independentes de óculos foi de 69,03% para a leitura, 85,96% para o uso do computador e 93,73% para a condução. A satisfação dos doentes para longe, intermédia, perto e globalmente foi 93,6%, 92,56%, 91,28% e 96,63%. Conclusões Tradicionalmente, a correção cirúrgica de catarata com uma lente monofocal, ao restaurar a acuidade visual para longe, induz um quadro de presbiopia pseudofáquico. A cirurgia de catarata moderna deverá oferecer aos doentes uma correção funcional da visão. Das LIO estudadas, a LIO trifocal é a que apresenta melhores valores de AV e de satisfação visual. A utilização de Patient Reported Outcomes como métrica de sucesso cirúrgico não só é um instrumento valioso em termos científicos, como também, permite centrar a prática clínica no doente, personalizando e privilegiando a melhor solução para cada caso individual. Referências • Correia M, Das T, Magno J, Pereira BM, Andrade V, Limburg H, Trevelyan J, Keeffe J, Verma N, Sapkota Y (2017). Prevalence and causes of blindness, visual impairment, and cataract surgery in Timor-Leste. Clin Ophthalmol; 29:2125-2131.
description: Lusiadas Scientific Journal, Vol. 1 No. 1 (2020): APRIL | JUNE
Progress toward superconductor electronics fabrication process with planarized NbN and NbN/Nb layers
Creators: name: Tolpygo, Sergey K.
name: Mallek, Justin L.
name: Bolkhovsky, Vladimir
name: Rastogi, Ravi
name: Golden, Evan B.
name: Weir, Terence J.
name: Johnson, Leonard M.
name: Gouker, Mark A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: To increase density of superconductor digital and neuromorphic circuits by 10x and reach integration scale of $10^8$ Josephson junctions (JJs) per chip, we developed a new fabrication process on 200-mm wafers, using self-shunted Nb/Al-AlOx/Nb JJs and kinetic inductors. The process has a layer of JJs, a layer of resistors, and 10 fully planarized superconducting layers: 8 Nb layers and 2 layers of high kinetic inductance materials, Mo$_2$N and NbN, with sheet inductance of 8 pH/sq and 3 pH/sq, respectively. NbN films were deposited by two methods: with $T_c$=15.5 K by reactive sputtering of a Nb target in Ar+N$_2$ mixture; with $T_c$ in the range from 9 K to 13 K by plasma-enhanced chemical vapor deposition (PECVD) using Tris(diethylamido)(tert-butylimido)niobium(V) metalorganic precursor. PECVD of NbN was investigated to obtain conformal deposition and filling narrow trenches and vias with high depth-to-width ratios, which was not possible to achieve using sputtering and other physical vapor deposition (PVD) methods at temperatures below $200 ^oC$ required to prevent degradation of Nb/Al-AlOx/Nb junctions. Nb layers with 200 nm thickness are used in the process layer stack as ground planes to maintain a high level of interlayer shielding and low intralayer mutual coupling, for passive transmission lines with wave impedances matching impedances of JJs, typically <=50 $Ω$, and for low-value inductors. NbN and NbN/Nb bilayer are used for cell inductors. Using NbN/Nb bilayers and individual pattering of both layers to form inductors allowed us to minimize parasitic kinetic inductance associated with interlayer vias and connections to JJs as well as to increase critical currents of the vias. Fabrication details and results of electrical characterization of NbN films, wires, and vias, and comparison with Nb properties are given.
description: 12 pages, 16 figures, 4 tables, 49 references. Submitted to IEEE TAS on Nov. 10, 2022
Final Manuscript.docx
Creators: name: Mysa Zaki
Publisher: name: figshare
Year: 2020
Subjects: Medicine

description: Purpose: Klebsiella pneumoniae (K. pneumoniae) represents a major pathogen associated with health care associated infections (HAI). Antibiotics resistance is a serious problem with this pathogen. The present study aimed to evaluate the presence of tet(X) variants from one to five by multiplex polymerase chain reaction (PCR) in clinical isolates of K. pneumoniae among tigecycline resistant isolates from HAI.  Method: The study was a cross-sectional study on 100 clinical isolates of K. pneumoniae isolated from patients with HAI. The bacterial isolates were subjected to the study of tigecycline resistance by E-test and resistant strains were subjected to detection of tet(X) variants by multiplex- PCR. Results: The prominent phenotypic resistances among isolated K. pneumoniae were Extended-Spectrum β-Lactamase (ESBL) (46%), followed by carbapenemase (26%), and tigecycline resistance (12%). Multiplex- PCR study for tet(X) gene variants revealed the presence of tet(X3) among seven isolates and tet(X4) among five isolates with the absence of other variants. Tigecycline resistance was significantly increased among Imipenem-resistant isolates (P=0.04) and tigecycline resistance was significant among ESBL isolates (P=0.03) and carbapenemase producers K. pneumoniae (P=0.002). Conclusion: The present study highlights the emergence of tigecycline among clinical isolates of K. pneumoniae in healthcare-associated infections. The study detected mobile genetics elements tet(X3) and tet(X4) by a multiplex polymerase chain reaction in these isolates. There are requirements for wide-scale studies to detect the emergence of Tigecycline resistance among K. pneumoniae and the role of tet(X) genes
FTIR Spectroscopy of Chronic Venous Leg Ulcer Exudates: An Approach to Spectral Healing Marker Identification
Creators: name: Cerusico, Nicolas
name: P. Aybar, Juan
name: Lopez, Silvana
name: G. Molina, Silvia
name: Chavez Jara, Romina
name: Sesto Cabral, Maria Eugenia
name: C. Valdez, Juan
name: Ben Altabef, Aida
name: N. Ramos, Alberto
Publisher: name: Lusiadas Scientific Journal
Year: 2020

description: Chronic venous leg ulcer (CVLU) arises as a chronic venous insuficiency complication and is a major cause of morbidity throughout the world. Our hypothesis is that the CVLU exudate composition is a biochemical representation of the wound clinical state. Then, Fourier Transform Infrared (FTIR) spectroscopy could be a useful and less-invasive technique to study the clinical state of the ulcer. For this, the aim of this work was to perform a spectral characterization of the exudate from CVLU using FTIR spectroscopy to identify potential healing markers. 45 exudate samples from CVLU, 95% of the strains isolated from CVLU in planktonic and biofilm phenotypes and other related biological samples such as human plasma, serum, urine, blood cells, urea, creatinine, glucose and albumin were studied by FTIR spectroscopy. According to the vibration frequency of biomolecules’ (lipids, proteins, nucleic acids and carbohydrates) characteristic bonds in the infrared region, different spectral windows were selected and spectral areas of each window were measured. Besides, Savitzky–Golay second derivatives were obtained for all spectra and peaks from each standardized window were detected. FTIR spectroscopy allowed identification of sample types (exudate, plasma, serum, urine) as each one presents a unique relative composition and ratios range. Also, this technique could be useful to identify bacteria in the phenotypic-ulcer state and allows differentiation of whether bacteria are in the bio?lm or planktonic form which is unlikely by conventional methods. In this work we found some spectral markers (areas, peaks) that allow identification of several parameters in the exudate such as (a) total cellularity, (b) inflammatory cell load, (c) bacterial load, (d) fibrin amount, and (e) inflammatory proteins. Because the measured areas or founded peaks are concentration-dependent this method could also serve to measure them. Therefore, FTIR spectroscopy could be useful to evaluate patient evolution as all these exudate parameters represent critical negative markers for wound healing.
description: Lusiadas Scientific Journal, Vol. 1 No. 1 (2020): APRIL | JUNE
title: A mixed methods study exploring UK mothers' experiences of bottle refusal by their breastfed baby
Creators: name: Maxwell, C
Publisher: name: Liverpool John Moores University
Year: 2021

description: The UK has one of the lowest breastfeeding rates in the world, with the majority of UK mothers feeding their baby by a bottle at six months of age. However, for one group of mothers circumstances are very different. When they wish to introduce a bottle to their breastfed baby, their baby refuses to accept it. Little is known about bottle refusal by breastfed babies, however a review of UK online forums and social media reveal large numbers of mothers experiencing the scenario. Online discussions illustrate negative consequences of bottle refusal, including mothers delaying their return to work, spending time and finances on methods to overcome it, and experiencing stress, anxiety, and resentment of breastfeeding. In addition, some mothers describe not wanting to breastfeed with a subsequent baby due to the negative impact of bottle refusal. This programme of research aimed to explore UK mothers’ experiences of bottle refusal by their breastfed baby in order to generate an understanding of the scenario. A mixed methods research study was undertaken, comprising of an online questionnaire completed by 841 UK mothers, semi-structured interviews with 30 mothers, and 597 posts captured from three UK online parenting forums. The overall findings show that mothers introduce a bottle to their breastfed baby due to breastfeeding not always fitting with their lives. The majority of mothers view bottle refusal as a problem that needs to be solved, however there is no easy solution and for some mothers their baby’s bottle refusal is permanent. Support for mothers experiencing bottle refusal is not always helpful, with breastfeeding appearing to be the priority rather than mothers’ individual circumstances. Most mothers experience bottle refusal negatively, experiencing stress and anxiety, however some mothers are able to frame it more positively. The reasons why mothers believe their breastfed baby refuses to feed from a bottle include the physical differences between bottle and breastfeeding, their baby’s individual personality, and the delaying of the introduction of a bottle to prevent nipple confusion. The research findings point to bottle refusal being a complex scenario with negative outcomes for mothers. It requires greater recognition within infant feeding literature and practice, in order for mothers to be better supported when experiencing it. In addition, a ‘normalising’ of bottle refusal as a natural response by a baby could help mothers to frame it more positively.
Comparative safety of smoking cessation pharmacotherapies
Creators: name: Carney, Gregory
Publisher: name: University of British Columbia
Year: 2019

description: Background: Smoking is the leading cause of preventable death worldwide. Although smoking cessation (SC) pharmacotherapies have been shown to have a moderate short-term benefit as a quitting aid, substantial cardiovascular and neuropsychiatric safety concerns have been identified in adverse reporting databases, leading to prescription label warnings by Health Canada and the U.S. FDA. However, recent studies indicate these warnings may be without merit. Objectives: This thesis examined the comparative safety and effectiveness of medications commonly used to aid smoking cessation. The thesis focused on real-world safety of varenicline, bupropion, and nicotine replacement therapy (NRT). It also demonstrated a novel method of measuring comparative effectiveness using drug therapy re-initiation as a proxy for treatment failure. Design and Setting: Retrospective cohort studies using linked de-identified claims data from the British Columbia Ministry of Health and U.S. MarketScan® databases. Outcomes: The primary safety outcome was a composite of cardiovascular hospitalizations. Secondary safety outcomes included: all-cause mortality, a composite of neuropsychiatric hospitalizations, and individual components of the primary outcome. Effectiveness was measured using drug therapy re-initiation. Statistical Analysis: Propensity score adjusted log-binomial and Cox proportional hazards regression models. Results: 116,442 B.C. participants and 618,497 U.S. participants were analyzed. In the U.S., compared to NRT, varenicline was associated with a 20% lower 1-year CV risk [adjusted risk ratio (RR) = 0.80, 95% Confidence Interval (CI): (0.75 – 0.85)] and bupropion was associated with a 25% lower 1-year CV risk [RR=0.75, 95% CI: (0.69 – 0.81)]. Varenicline was associated with a 26% lower 1-year risk of neuropsychiatric hospitalization versus NRT [RR=0.74, 95% CI: (0.71 – 0.76)]. In B.C., compared to NRT, varenicline was associated with a 20% one-year relative risk decrease of neuropsychiatric hospitalization [RR: 0.80, CI: (0.71 – 0.89)], and a 19% one-year relative risk decrease of mortality [RR: 0.81, CI: (0.71 – 0.93)]. We found no significant difference in risk between NRT and bupropion for cardiovascular hospitalizations, neuropsychiatric hospitalizations, or mortality. Conclusions: Compared to NRT, varenicline was associated with fewer serious adverse events, and bupropion the same number of serious adverse events. Varenicline and bupropion were associated with fewer subsequent SC drug episodes.
Quantum state resolved molecular dipolar collisions over four decades of energy
Creators: name: Tang, Guoqiang
name: Besemer, Matthieu
name: Kuijpers, Stach
name: Groenenboom, Gerrit C.
name: van der Avoird, Ad
name: Karman, Tijs
name: van de Meerakker, Sebastiaan Y. T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Collisions between cold polar molecules represent a fascinating research frontier, but have proven hard to probe experimentally. We report measurements of inelastic cross sections for collisions between NO and ND 3 molecules at energies between 0.1 and 580 cm-1 , with full quantum state resolution. At energies below the 100 cm-1 well depth of the interaction potential, we observed backward glories originating from peculiar U-turn trajectories. At energies below 0.2 cm-1, we observed a breakdown of the Langevin capture model, which we interpreted in terms of a suppressed mutual polarization during the collision, effectively switching off the molecular dipole moments. Scattering calculations based on an ab initio NO-ND3 potential energy surface revealed the crucial role of near-degenerate rotational levels with opposite parity in low-energy dipolar collisions.
Radioscience simulations in General Relativity and in alternative theories of gravity
Creators: name: Hees, Aurelien
name: Wolf, Peter
name: Lamine, Brahim
name: Reynaud, Serge
name: Jaekel, Marc-Thierry
name: Poncin-Lafitte, Christophe Le
name: Lainey, Valery
name: Fuzfa, Andre
name: Dehant, Veronique
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this communication, we focus on the possibility to test GR with radioscience experiments. We present a new software that in a first step simulates the Range/Doppler signals directly from the space time metric (thus in GR and in alternative theories of gravity). In a second step, a least-squares fit of the involved parameters is performed in GR. This software allows one to get the order of magnitude and the signature of the modifications induced by an alternative theory of gravity on radioscience signals. As examples, we present some simulations for the Cassini mission in Post-Einsteinian gravity and with the MOND External Field Effect.
description: 4 pages; Proceedings of "Les Rencontres de Moriond 2011 - Gravitation session"
Quantum entanglement, unitary braid representation and Temperley-Lieb algebra
Creators: name: Ho, C. -L.
name: Solomon, A. I.
name: Oh, C. -H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Group Theory (math.GR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Important developments in fault-tolerant quantum computation using the braiding of anyons have placed the theory of braid groups at the very foundation of topological quantum computing. Furthermore, the realization by Kauffman and Lomonaco that a specific braiding operator from the solution of the Yang-Baxter equation, namely the Bell matrix, is universal implies that in principle all quantum gates can be constructed from braiding operators together with single qubit gates. In this paper we present a new class of braiding operators from the Temperley-Lieb algebra that generalizes the Bell matrix to multi-qubit systems, thus unifying the Hadamard and Bell matrices within the same framework. Unlike previous braiding operators, these new operators generate {\it directly}, from separable basis states, important entangled states such as the generalized Greenberger-Horne-Zeilinger states, cluster-like states, and other states with varying degrees of entanglement.
description: 5 pages, no figure
Impacto de um Ambiente de Colaboração Mútua na Redução das Infeções da Corrente Sanguínea em UTI
Creators: name: C.G. Salles, Thais
name: C. Maurício, Fábio
name: M.S. Melo, Juliana
name: G. Felix, Katiane
name: D. Rodrigues, Kelvi
name: A.S. Medeiros, Eduardo
Publisher: name: Lusiadas Scientific Journal
Year: 2020

description: Introdução As infeções relacionadas à assistência à saúde associadas a procedimentos invasivos em unidades de terapia intensiva (UTI) estão entre as principais causas de morte e aumento do tempo de internação. Objetivo Avaliar o impacto de uma estratégia multidisciplinar na redução de infecções de corrente sanguínea relacionadas a cateter venoso central (ICS-CVC). Métodos Foi realizado um estudo tipo coorte em três UTI de adultos, totalizando 36 leitos, de um hospital terciário localizado no sudeste do estado de São Paulo, Brasil. Foram comparados dois períodos: A) Janeiro a dezembro de 2018 (referência) e B) Janeiro a setembro de 2019 (período de melhoria contínua). O programa de prevenção de infeção associada a CVC foi revisto e a partir de janeiro de 2019 um enfermeiro de cada UTI tornou-se responsável pelo monitoramento das medidas preconizadas nos bundles de prevenção de ICS-CVC, com discussão diária com os membros integrantes do Serviço de Controle de Infecção Hospitalar (SCIH). Foram implementadas visitas multidisciplinares para a revisão da necessidade de permanência do CVC e a possibilidade de sua retirada no momento da alta da UTI. Foi criado um ambiente de colaboração mútua com o apoio do coordenador de enfermagem, médicos da unidade e toda a equipe multidisciplinar para discussão e avaliação crítica dos casos de infeção. Resultados No período de janeiro a dezembro de 2018, a densidade de incidência de infecção associada a CVC foi de 1,0 por 1000 CVC/dia no período de referência e 0,2 ICS por 1000 CVC/dia no período de melhoria contínua (p<0,05). No ano de 2019 observamos uma diminuição sustentada das infecções e ampliamos este projeto para outros setores do hospital, com redução nas taxas de infeção. Conclusão A integração de ações das equipes com o objetivo de reduzir as taxas de incidência de ICS-CVC, priorizando a indicação e retirada precoce do dispositivo, tiveram importante impacto na redução das taxas de infeção. Referências Classen DC, Griffin FA, Berwick DM. (2017) Measuring Patient Safety in Real Time: An Essential Method for Effectively Improving the Safety of Care. Ann Intern Med 167:882–883. Pronovost P, Needham D, Berenholtz S, Sinopoli D, Chu H, et al. (2006) An Intervention to Decrease Catheter-Related Bloodstream Infections in the ICU. N Engl J Med 355:2725-2732. Brasil. Agência Nacional de Vigilância Sanitária Medidas de Prevenção de Infecção Relacionada à Assistência à Saúde. Brasília: Anvisa, 2017.
description: Lusiadas Scientific Journal, Vol. 1 No. 1 (2020): APRIL | JUNE
O Papel das Incretinas na Diabetes Mellitus Tipo 2 e Obesidade
Creators: name: G. Fernandes, Júlia Alina
name: Sá Veloso, Margarida
Publisher: name: Lusiadas Scientific Journal
Year: 2020

description: Introduc?a?o A Diabetes Mellitus tipo 2 (DM 2) é uma doença caraterizada pela resistência à insulina e pela disfunção das células ? pancreáticas. A prevalência desta patologia, a par da obesidade, têm aumentado drasticamente nos últimos anos, surgindo assim a necessidade de novas formas de controlo da homeostasia da glicose e redução de peso em doentes com DM 2. As incretinas são hormonas gastrointestinais secretadas aquando da ingestão alimentar, apresentando um papel importante na regulação da secreção de insulina e de glicagina pelo pâncreas – efeito incretina. As duas hormonas responsáveis por estes efeitos são o “Peptídeo Inibidor Gástrico” (GIP), também designado “Peptídeo Insulinotrópico dependente de Glicose” e o “Peptídeo-1 semelhante à Glicagina” (GLP-1). Foi objetivo deste trabalho efetuar uma revisão temática de forma a perceber como a terapia farmacológica baseada nas incretinas poderá ser uma estratégia eficaz na perda de peso e homeostasia da glicose em doentes diabéticos obesos.
description: Lusiadas Scientific Journal, Vol. 1 No. 1 (2020): APRIL | JUNE
Pneumonia Eosinofílica: Uma Entidade que Não se Vê Todos os Dias
Creators: name: Ramalho, Ana
name: De Jesus, Cláudia
name: Marques Santos, Sofia
name: Moleiro, Filipa
name: Victorino, Helena
name: Comenda, Maria Eduarda
name: Barbosa, Mário
name: Monteiro, Nadine
name: Cantante, Helena
Publisher: name: Lusiadas Scientific Journal
Year: 2020

description: Introdução A pneumonia eosinofílica (PE) enquadra-se num grupo heterogéneo de doenças caracterizadas pela presença de eosinó?los a nível pulmonar, associado a in?ltrados. A etiologia é variada, sendo subdividida em causas primárias (idiopática) e secundárias. A PE crónica idiopática é uma entidade rara, mais frequente em mulheres na 4ª e 5ª década de vida, sendo que a maioria dos doentes não são fumadores.
description: Lusiadas Scientific Journal, Vol. 1 No. 1 (2020): APRIL | JUNE
Separation of variables for integrable spin-boson models
Creators: name: Amico, Luigi
name: Frahm, Holger
name: Osterloh, Andreas
name: Wirth, Tobias
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We formulate the functional Bethe ansatz for bosonic (infinite dimensional) representations of the Yang-Baxter algebra. The main deviation from the standard approach consists in a half infinite 'Sklyanin lattice' made of the eigenvalues of the operator zeros of the Bethe annihilation operator. By a separation of variables, functional TQ equations are obtained for this half infinite lattice. They provide valuable information about the spectrum of a given Hamiltonian model. We apply this procedure to integrable spin-boson models subject to both twisted and open boundary conditions. In the case of general twisted and certain open boundary conditions polynomial solutions to these TQ equations are found and we compute the spectrum of both the full transfer matrix and its quasi-classical limit. For generic open boundaries we present a two-parameter family of Bethe equations, derived from TQ equations that are compatible with polynomial solutions for Q. A connection of these parameters to the boundary fields is still missing.
description: 30 pages, revtex4. Minor changes
Morphology of the gas-rich debris disk around HD 121617 with SPHERE observations in polarized light
Creators: name: Perrot, Clément
name: Olofsson, Johan
name: Kral, Quentin
name: Thébault, Philippe
name: Montesinos, Matías
name: Kennedy, Grant
name: Bayo, Amelia
name: Iglesias, Daniela
name: van Holstein, Rob
name: Pinte, Christophe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Debris disks are the signposts of collisionally eroding planetesimal circumstellar belts, whose study can put important constraints on the structure of extrasolar planetary systems. The best constraints on the morphology of disks are often obtained from spatially resolved observations in scattered light. Here, we investigate the young (~16 Myr) bright gas-rich debris disk around HD121617. We use new scattered-light observations with VLT/SPHERE to characterize the morphology and the dust properties of this disk. From these properties we can then derive constraints on the physical and dynamical environment of this system, for which significant amounts of gas have been detected. The disk morphology is constrained by linear-polarimetric observations in the J band. Based on our modeling results and archival photometry, we also model the SED to put constraints on the total dust mass and the dust size distribution. We explore different scenarios that could explain these new constraints. We present the first resolved image in scattered light of the debris disk HD121617. We fit the morphology of the disk, finding a semi-major axis of 78.3$\pm$0.2 au, an inclination of 43.1$\pm$0.2° and a position angle of the major axis with respect to north, of 239.8$\pm$0.3°, compatible with the previous continuum and CO detection with ALMA. Our analysis shows that the disk has a very sharp inner edge, possibly sculpted by a yet-undetected planet or gas drag. While less sharp, its outer edge is steeper than expected for unperturbed disks, which could also be due to a planet or gas drag, but future observations probing the system farther from the main belt would help explore this further. The SED analysis leads to a dust mass of 0.21$\pm$0.02 M$_{\oplus}$ and a minimum grain size of 0.87$\pm$0.12 $μ$m, smaller than the blowout size by radiation pressure, which is not unexpected for very bright col...
description: 12 pages, 7 figures. Accepted in A&A (06/02/2023)
Impact of the Sampling Site in the Result of Wet Mount Microscopy
Creators: name: Azevedo, Sofia
name: Lima-Silva, Joana
name: Vieira-Baptista, Pedro
Publisher: name: Lusiadas Scientific Journal
Year: 2020

description: OBJECTIVES: Wet mount microscopy (WMM) is an ancillary test in the diagnosis of vulvovaginitis. However, there are little data about the impact of the sampling site. Our main objective was to determine the agreement between samples collected from different vaginal sites. MATERIALS AND METHODS: Five vaginal samples (one from each of the fornices and one from the lower third) were collected from 50 consecutive women and evaluated using phase-contrast WMM, including the following: lactobacillary grade, presence of other bacteria, clue cells, inflammation, and at-rophy. Global percentage of agreement, ? index [poor (<0), slight (0.01–0.20), fair (0.21–0.40), moderate (0.41–0.60), substantial (0.61–0.80), and almost perfect (0.81–1)], sensitivity and negative predictive value were calculated. RESULTS: Global percentage of agreement was high for all individual parameters (>75%), but low for the final diagnosis (57%). Agreement rate was substantial or almost perfect for the evaluation of normal versus abnormal flora, substantial for the presence of absence of bacteria other than lactobacilli and for the presence of clue cells, and moderate to almost perfect for the presence of dysbiosis and cytolysis. Agreement rates were worse for inflammation, atrophy, and the presence of Candida. The lower third of the vagina had the highest sensitivity for Candida (0.6, 95% CI = 0.41–0.86) and bacterial vaginosis (0.92, 95% CI = 0.73–1.00), whereas the anterior fornix performed better for cytolytic vaginosis (0.75, 95% CI = 0.43–0.93). CONCLUSIONS: There is some variation in the results according to the sampling site, which may be overcome by collecting 2 samples (anterior fornix and lower third of the vagina)
description: Lusiadas Scientific Journal, Vol. 1 No. 1 (2020): APRIL | JUNE
Single crystal growth and structural characterization of FeTe1-xSx
Creators: name: Mizuguchi, Yoshikazu
name: Deguchi, Keita
name: Ozaki, Toshinori
name: Nagao, Masanori
name: Tsuda, Shunsuke
name: Yamaguchi, Takahide
name: Takano, Yoshihiko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have synthesized single crystals of FeTe1-xSx and investigated the structural and physical properties. The actual S concentration was found to be significantly smaller than the starting nominal value. The solubility limit of S for the Te site for the crystals grown using a self-flux method was estimated to be around 12 %. Although a suppression of antiferromagnetic transition was observed by S substitution, bulk superconductivity was not observed. A phase diagram of as-grown FeTe1-xSx single crystal was established on the basis of the structural and physical properties.
description: 4 pages, 6 figures, 1 table, to be published in IEEE (proceeding of ASC)