35,539 results on '"Bermudez A"'
Search Results
202. The Role of Anti-Racist Community-Partnered Praxis in Implementing Restorative Circles Within Marginalized Communities in Southern California During the COVID-19 Pandemic
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Adkins-Jackson, Paris B, Vázquez, Evelyn, Henry-Ala, Frank K, Ison, Juliana M, Cheney, Ann, Akingbulu, Josephine, Starks, Christian, Slay, Lindsay, Dorsey, Alexander, Marmolejo, Connie, Stafford, Alvin, Wen, James, McCauley, Margaret H, Summers, Latrese, Bermudez, Llendy, Cruz-Roman, Zitlaly L, Castillo, Itzel, Kipke, Michele D, Brown, Arleen F, and Workgroup, The STOP COVID-19 CA Vaccine Hesitancy
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Health Services and Systems ,Health Sciences ,Clinical Research ,Prevention ,Infection ,Good Health and Well Being ,Humans ,Pandemics ,COVID-19 ,California ,Trust ,Mental Health ,Community-Based Participatory Research ,community-based ,mental health ,restorative ,antiracism ,CBPR ,partnerships ,community-academic partnerships ,intervention planning ,STOP COVID-19 CA Vaccine Hesitancy Workgroup ,community–academic partnerships ,Public Health and Health Services ,Curriculum and Pedagogy ,Public health - Abstract
The COVID-19 pandemic has exacerbated the adverse influence of structural racism and discrimination experienced by historically marginalized communities (e.g., Black, Latino/a/x, Indigenous, and transgender people). Structural racism contributes to trauma-induced health behaviors, increasing exposure to COVID-19 and restricting access to testing and vaccination. This intersection of multiple disadvantages has a negative impact on the mental health of these communities, and interventions addressing collective healing are needed in general and in the context of the COVID-19 pandemic. The Share, Trust, Organize, and Partner COVID-19 California Alliance (STOP COVID-19 CA), a statewide collaborative of 11 universities and 75 community partners, includes several workgroups to address gaps in COVID-19 information, vaccine trial participation, and access. One of these workgroups, the Vaccine Hesitancy Workgroup, adopted an anti-racist community-partnered praxis to implement restorative circles in historically marginalized communities to facilitate collective healing due to structural racism and the COVID-19 pandemic. The project resulted in the development of a multilevel pre-intervention restorative process to build or strengthen community-institutional partnerships when procurement of funds has been sought prior to community partnership. This article discusses this workgroup's role in advancing health justice by providing a community-based mental health intervention to marginalized communities in Southern California while using an antiracist praxis tool to develop a successful community-institutional partnership and to live up to the vision of community-based participatory research.
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- 2023
203. A Metallurgical Inspection Method to Assess the Damage in Performance-Limiting Nb3Sn Accelerator Magnet Coils
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Moros, Alice, Crouvizier, Mickael Denis, Santillana, Ignacio Aviles, Sgobba, Stefano, Bermudez, Susana Izquierdo, Lusa, Nicholas, Troitino, Jose Ferradas, Milanese, Attilio, Todesco, Ezio, Devred, Arnaud, Ambrosio, Giorgio, Baldini, Maria, Ferracin, Paolo, Schmalzle, Jesse, and Vallone, Giorgio
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Physics - Accelerator Physics - Abstract
The design and production of Nb3Sn-based dipole and quadrupole magnets is critical for the realization of the High-Luminosity Large Hadron Collider (HL-LHC) at the European Organization for Nuclear Research (CERN). Nb3Sn superconducting coils are aimed at enhancing the bending and focusing strengths of accelerator magnets for HL-LHC and beyond. Due to the brittle nature of Nb3Sn, the coil fabrication steps are very challenging and require very careful QA/QC. Flaws in the Nb3Sn filaments may lead to quenches, and eventually, performance limitation below nominal during magnet testing. A novel inspection method, including advanced non-destructive and destructive techniques, was developed to explore the root-causes of quenches occurring in performance-limiting coils. The most relevant results obtained for MQXF coils through this innovative inspection method are presented. This approach allows for precise assessment of the physical events associated to the quenches experienced b y magnet coils, mainly occurring under the form of damaged strands with transversely broken sub-elements. Coil-slice preparation, micro-optical observations of transverse and longitudinal cross-sections, and a deep etching technique of copper will be illustrated in the present work, with a focus on the results achieved for a CERN coil from a non-conforming quadrupole magnet prototype, and two coils fabricated in the US, in the framework of the Accelerator Upgrade Project (AUP) collaboration, from two different non-conforming quadrupole magnets, respectively. The results obtained through the proposed inspection method will be illustrated., Comment: Applied Superconductivity Conference 2022
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- 2022
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204. Two-color operation of a soft x-ray FEL with alternation of undulator tunes
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Schneidmiller, E. A., Macias, I. J. Bermudez, Beye, M., Braune, M., Czwalinna, M. -K., Duesterer, S., Faatz, B., Ivanov, R., Jastrow, F., Kuhlmann, M., Roensch-Schulenburg, J., Schreiber, S., Sorokin, A., Tiedtke, K., Yurkov, M. V., and Zemella, J.
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Physics - Accelerator Physics ,Physics - Instrumentation and Detectors ,Physics - Optics - Abstract
FLASH is the first soft X-ray FEL user facility, routinely providing brilliant photon beams for users since 2005. The second undulator branch of this facility, FLASH2, is gap-tunable which allows to test and use advanced lasing concepts. In particular, we developed a two-color operation mode based on the alternatingly tuned undulator segments (every other segment is tuned to the second wavelength). This scheme is advantageous in comparison with a subsequent generation of two colors in two consecutive sections of the undulator line. First, source positions of the two FEL beams are close to each other which makes it easier to focus them on a sample. Second, the amplification is more efficient in this configuration since the segments with respectively "wrong" wavelength still act as bunchers. We studied operation of this scheme in the regime of small and large separation of tunes (up to a factor of two). We developed new methods for online intensity measurements of the two colors simultaneously that require a combination of two detectors. We also demonstrated our capabilities to measure spectral and temporal properties of two pulses with different wavelengths.
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- 2022
205. The Near Infrared Imager and Slitless Spectrograph for JWST -- V. Kernel Phase Imaging and Data Analysis
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Kammerer, Jens, Cooper, Rachel A., Vandal, Thomas, Thatte, Deepashri, Martinache, Frantz, Sivaramakrishnan, Anand, Chaushev, Alexander, Stolker, Tomas, Lloyd, James P., Albert, Loïc, Doyon, René, Sallum, Steph, Perrin, Marshall D., Pueyo, Laurent, Mérand, Antoine, Gallenne, Alexandre, Greenbaum, Alexandra, Sanchez-Bermudez, Joel, Blakely, Dori, Johnstone, Doug, Volk, Kevin, Martel, Andre, Goudfrooij, Paul, Meyer, Michael R., Willott, Chris J., De Furio, Matthew, Dang, Lisa, Radica, Michael, and Noirot, Gaël
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Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
Kernel phase imaging (KPI) enables the direct detection of substellar companions and circumstellar dust close to and below the classical (Rayleigh) diffraction limit. We present a kernel phase analysis of JWST NIRISS full pupil images taken during the instrument commissioning and compare the performance to closely related NIRISS aperture masking interferometry (AMI) observations. For this purpose, we develop and make publicly available the custom "Kpi3Pipeline" enabling the extraction of kernel phase observables from JWST images. The extracted observables are saved into a new and versatile kernel phase FITS file (KPFITS) data exchange format. Furthermore, we present our new and publicly available "fouriever" toolkit which can be used to search for companions and derive detection limits from KPI, AMI, and long-baseline interferometry observations while accounting for correlated uncertainties in the model fitting process. Among the four KPI targets that were observed during NIRISS instrument commissioning, we discover a low-contrast (~1:5) close-in (~1 $\lambda/D$) companion candidate around CPD-66~562 and a new high-contrast (~1:170) detection separated by ~1.5 $\lambda/D$ from 2MASS~J062802.01-663738.0. The 5-$\sigma$ companion detection limits around the other two targets reach ~6.5 mag at ~200 mas and ~7 mag at ~400 mas. Comparing these limits to those obtained from the NIRISS AMI commissioning observations, we find that KPI and AMI perform similar in the same amount of observing time. Due to its 5.6 times higher throughput if compared to AMI, KPI is beneficial for observing faint targets and superior to AMI at separations >325 mas. At very small separations (<100 mas) and between ~250-325 mas, AMI slightly outperforms KPI which suffers from increased photon noise from the core and the first Airy ring of the point-spread function., Comment: 34 pages, 17 figures, accepted for publication in PASP
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- 2022
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206. The Near Infrared Imager and Slitless Spectrograph for the James Webb Space Telescope -- IV. Aperture Masking Interferometry
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Sivaramakrishnan, Anand, Tuthill, Peter, Lloyd, James P., Greenbaum, Alexandra Z., Thatte, Deepashri, Cooper, Rachel A., Vandal, Thomas, Kammerer, Jens, Sanchez-Bermudez, Joel, Pope, Benjamin J. S., Blakely, Dori, Albert, Loïc, Cook, Neil J., Johnstone, Doug, Martel, André R., Volk, Kevin, Soulain, Anthony, Artigau, Étienne, Lafrenière, David, Willott, Chris J., Parmentier, Sébastien, Ford, K. E. Saavik, McKernan, Barry, Vila, M. Begoña, Rowlands, Neil, Doyon, René, Desdoigts, Louis, Fullerton, Alexander W., De Furio, Matthew, Goudfrooij, Paul, Holfeltz, Sherie T., LaMassa, Stephanie, Maszkiewicz, Michael, Meyer, Michael R., Perrin, Marshall D., Pueyo, Laurent, Sahlmann, Johannes, Sohn, Sangmo Tony, and Teixeira, Paula S.
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Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
The James Webb Space Telescope's Near Infrared Imager and Slitless Spectrograph (JWST-NIRISS) flies a 7-hole non-redundant mask (NRM), the first such interferometer in space, operating at 3-5 \micron~wavelengths, and a bright limit of $\simeq 4$ magnitudes in W2. We describe the NIRISS Aperture Masking Interferometry (AMI) mode to help potential observers understand its underlying principles, present some sample science cases, explain its operational observing strategies, indicate how AMI proposals can be developed with data simulations, and how AMI data can be analyzed. We also present key results from commissioning AMI. Since the allied Kernel Phase Imaging (KPI) technique benefits from AMI operational strategies, we also cover NIRISS KPI methods and analysis techniques, including a new user-friendly KPI pipeline. The NIRISS KPI bright limit is $\simeq 8$ W2 magnitudes. AMI (and KPI) achieve an inner working angle of $\sim 70$ mas that is well inside the $\sim 400$ mas NIRCam inner working angle for its circular occulter coronagraphs at comparable wavelengths., Comment: 30 pages, 10 figures
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- 2022
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207. Dynamics of Confined Monopoles and Similarities with Confined Quarks
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Dvali, Gia, Valbuena-Bermudez, Juan, and Zantedeschi, Michael
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High Energy Physics - Theory ,General Relativity and Quantum Cosmology ,High Energy Physics - Lattice ,High Energy Physics - Phenomenology - Abstract
In this work, we study the annihilation of a pair of `t Hooft-Polyakov monopoles due to confinement by a string. We analyze the regime in which the scales of monopoles and strings are comparable. We compute the spectrum of the emitted gravitational waves and find it to agree with the previously calculated point-like case for wavelengths longer than the system width and before the collision. However, we observe that in a head-on collision, monopoles are never re-created. Correspondingly, not even once the string oscillates. Instead, the system decays into waves of Higgs and gauge fields. We explain this phenomenon by the loss of coherence in the annihilation process. Due to this, the entropy suppression makes the recreation of a monopole pair highly improbable. We argue that in a similar regime, analogous behaviour is expected for the heavy quarks connected by a QCD string. There too, instead of re-stretching a long string after the first collapse, the system hadronizes and decays in a high multiplicity of mesons and glueballs. We discuss the implications of our results., Comment: 11 pages, 7 figures, video with dynamics at https://www.youtube.com/watch?v=M4IX2JFVpGk
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- 2022
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208. Time delay in 1D disordered media with high transmission
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Razo-López, Luis A., Méndez-Bermúdez, J. A., and Gopar, Victor A.
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Condensed Matter - Disordered Systems and Neural Networks ,Condensed Matter - Statistical Mechanics - Abstract
We study the time delay of reflected and transmitted waves in 1D disordered media with high transmission. Highly transparent and translucent random media are found in nature or can be synthetically produced. We perform numerical simulations of microwaves propagating in disordered waveguides to show that reflection amplitudes are described by complex Gaussian random variables with the remarkable consequence that the time-delay statistics in reflection of 1D disordered media are described as in random media in the diffusive regime. For transmitted waves, we show numerically that the time delay is an additive quantity and its fluctuations thus follow a Gaussian distribution. Ultimately, the distributions of the time delay in reflection and transmission are physical illustrations of the central limit theorem at work., Comment: 8 pages, 11 figures
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- 2022
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209. The GRAVITY Young Stellar Object survey -- IX. Spatially resolved kinematics of hot hydrogen gas in the star/disk interaction region of T Tauri stars
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GRAVITY Collaboration, Wojtczak, J. A., Labadie, L., Perraut, K., Tessore, B., Soulain, A., Ganci, V., Bouvier, J., Dougados, C., Alécian, E., Nowacki, H., Cozzo, G., Brandner, W., Garatti, A. Caratti o, Garcia, P., Lopez, R. Garcia, Sanchez-Bermudez, J., Amorim, A., Benisty, M., Berger, J. -P., Bourdarot, G., Caselli, P., Clénet, Y., de Zeeuw, P. T., Davies, R., Drescher, A., Duvert, G., Eckart, A., Eisenhauer, F., Eupen, F., Föster-Schreiber, N. M., Gendron, E., Gillessen, S., Grant, S., Grellmann, R., Heißel, G., Henning, Th., Hippler, S., Horrobin, M., Hubert, Z., Jocou, L., Kervella, P., Labour, S., Lapeyrère, V., Bouquin, J. -B. Le, Léna, P., Lutz, D., Mang, F., Ott, T., Paumard, T., Perrin, G., Scheithauer, S., Shangguan, J., Shimizu, T., Spezzano, S., Straub, O., Straubmeier, C., Sturm, E., van Dishoeck, E., Vincent, F., and Widmann, F.
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Astrophysics - Solar and Stellar Astrophysics - Abstract
Aims: We aim to spatially and spectrally resolve the Br-gamma hydrogen emission line with the methods of interferometry in order to examine the kinematics of the hydrogen gas emission region in the inner accretion disk of a sample of solar-like young stellar objects. The goal is to identify trends and categories among the sources of our sample and to discuss whether or not they can be tied to different origin mechanisms associated with Br-gamma emission in T Tauri stars, chiefly and most prominently magnetospheric accretion. Methods: We observed a sample of seven T Tauri stars for the first time with VLTI GRAVITY, recording spectra and spectrally dispersed interferometric quantities across the Br-gamma line in the NIR K-band. We use them to extract the size of the Br-gamma emission region and the photocenter shifts. To assist in the interpretation, we also make use of radiative transfer models of magnetospheric accretion to establish a baseline of expected interferometric signatures if accretion is the primary driver of Br-gamma emission. Results: From among our sample, we find that five of the seven T~Tauri stars show an emission region with a half-flux radius in the range broadly expected for magnetospheric truncation. Two of the five objects also show Br-gamma emission primarily originating from within the corotation radius, while two other objects exhibit extended emission on a scale beyond 10 R$_*$, one of them even beyond the K~band continuum half-flux radius of 11.3 R$_*$. Conclusions: We find strong evidence to suggest that for the two weakest accretors in the sample, magnetospheric accretion is the primary driver of Br-gamma radiation. The results for the remaining sources imply either partial or strong contributions coming from spatially extended emission components in the form of outflows, such as stellar or disk winds., Comment: Version corresponds to the one in A&A production. The author list has been amended with "GRAVITY Collaboration" as first entry in keeping with the convention established for papers published by the GRAVITY consortium in recent years
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- 2022
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210. Localization properties of harmonic chains with correlated mass and spring disorder: Analytical approach
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Herrera-Gonzalez, I. F. and Mendez-Bermudez, J. A.
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Condensed Matter - Disordered Systems and Neural Networks - Abstract
We study the localization properties of normal modes in harmonic chains with mass and spring weak disorder. Using a perturbative approach, an expression for the localization length is obtained, which is valid for arbitrary correlations of the disorder, and for practically the whole frequency band. In addition, we show how to generate effective mobility edges by the use of disorder with long range self-correlations and cross-correlations. Finally, the transport of phonons is also analyzed showing effective transparent windows that can be manipulated through the disorder correlations even for relative short chain sizes. Our results may have applications in modulating thermal transport, particularly in the design of thermal filters or in manufacturing high-thermal-conductivity materials., Comment: 10 pages, 6 figures
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- 2022
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211. Nested Dust Shells around the Wolf-Rayet Binary WR 140 observed with JWST
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Lau, Ryan M., Hankins, Matthew J., Han, Yinuo, Argyriou, Ioannis, Corcoran, Michael F., Eldridge, Jan J., Endo, Izumi, Fox, Ori D., Marin, Macarena Garcia, Gull, Theodore R., Jones, Olivia C., Hamaguchi, Kenji, Lamberts, Astrid, Law, David R., Madura, Thomas, Marchenko, Sergey V., Matsuhara, Hideo, Moffat, Anthony F. J., Morris, Mark R., Morris, Patrick W., Onaka, Takashi, Ressler, Michael E., Richardson, Noel D., Russell, Christopher M. P., Sanchez-Bermudez, Joel, Smith, Nathan, Soulain, Anthony, Stevens, Ian R., Tuthill, Peter, Weigelt, Gerd, Williams, Peredur M., and Yamaguchi, Ryodai
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Astrophysics - Solar and Stellar Astrophysics ,Astrophysics - Astrophysics of Galaxies ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Massive colliding-wind binaries that host a Wolf-Rayet (WR) star present a potentially important source of dust and chemical enrichment in the interstellar medium (ISM). However, the chemical composition and survival of dust formed from such systems is not well understood. The carbon-rich WR (WC) binary WR~140 presents an ideal astrophysical laboratory for investigating these questions given its well-defined orbital period and predictable dust-formation episodes every 7.93 years around periastron passage. We present observations from our Early Release Science program (ERS1349) with the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) Medium-Resolution Spectrometer (MRS) and Imager that reveal the spectral and spatial signatures of nested circumstellar dust shells around WR~140. MIRI MRS spectroscopy of the second dust shell and Imager detections of over 17 shells formed throughout the past $\gtrsim130$ years confirm the survival of carbonaceous dust grains from WR~140 that are likely carriers of "unidentified infrared" (UIR)-band features at 6.4 and 7.7 $\mu$m. The observations indicate that dust-forming WC binaries can enrich the ISM with organic compounds and carbonaceous dust., Comment: Published in Nature Astronomy on Oct 12, 2022; 21 pages, 5 figures, 2 tables
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- 2022
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212. Revan-degree indices on random graphs
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Aguilar-Sanchez, R., Herrera-Gonzalez, I. F., Mendez-Bermudez, J. A., and Sigarreta, Jose M.
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Mathematics - Combinatorics - Abstract
Given a simple connected non-directed graph $G=(V(G),E(G))$, we consider two families of graph invariants: $RX_\Sigma(G) = \sum_{uv \in E(G)} F(r_u,r_v)$ (which has gained interest recently) and $RX_\Pi(G) = \prod_{uv \in E(G)} F(r_u,r_v)$ (that we introduce in this work); where $uv$ denotes the edge of $G$ connecting the vertices $u$ and $v$, $r_u$ is the Revan degree of the vertex $u$, and $F$ is a function of the Revan vertex degrees. Here, $r_u = \Delta + \delta - d_u$ with $\Delta$ and $\delta$ the maximum and minimum degrees among the vertices of $G$ and $d_u$ is the degree of the vertex $u$. Particularly, we apply both $RX_\Sigma(G)$ and R$X_\Pi(G)$ on two models of random graphs: Erd\"os-R\'enyi graphs and random geometric graphs. By a thorough computational study we show that $\left< RX_\Sigma(G) \right>$ and $\left< \ln RX_\Pi(G) \right>$, normalized to the order of the graph, scale with the average Revan degree $\left< r \right>$; here $\left< \cdot \right>$ denotes the average over an ensemble of random graphs. Moreover, we provide analytical expressions for several graph invariants of both families in the dense graph limit., Comment: 16 pages, 10 figures
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- 2022
213. FreDSNet: Joint Monocular Depth and Semantic Segmentation with Fast Fourier Convolutions
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Berenguel-Baeta, Bruno, Bermudez-Cameo, Jesus, and Guerrero, Jose J.
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Computer Science - Computer Vision and Pattern Recognition ,Computer Science - Artificial Intelligence ,Computer Science - Robotics - Abstract
In this work we present FreDSNet, a deep learning solution which obtains semantic 3D understanding of indoor environments from single panoramas. Omnidirectional images reveal task-specific advantages when addressing scene understanding problems due to the 360-degree contextual information about the entire environment they provide. However, the inherent characteristics of the omnidirectional images add additional problems to obtain an accurate detection and segmentation of objects or a good depth estimation. To overcome these problems, we exploit convolutions in the frequential domain obtaining a wider receptive field in each convolutional layer. These convolutions allow to leverage the whole context information from omnidirectional images. FreDSNet is the first network that jointly provides monocular depth estimation and semantic segmentation from a single panoramic image exploiting fast Fourier convolutions. Our experiments show that FreDSNet has similar performance as specific state of the art methods for semantic segmentation and depth estimation. FreDSNet code is publicly available in https://github.com/Sbrunoberenguel/FreDSNet, Comment: 7 pages, 5 figures, 3 tables
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- 2022
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214. Snowmass'21 Accelerator Frontier Report
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Gourlay, S., Raubenheimer, T., Shiltsev, V., Arduini, G., Assmann, R., Barbier, C., Bai, M., Belomestnykh, S., Bermudez, S., Bhat, P., Faus-Golfe, A., Galambos, J., Geddes, C., Hoffstaetter, G., Hogan, M., Huang, Z., Lamont, M., Li, D., Lund, S., Milner, R., Musumeci, P., Nanni, E., Palmer, M., Pastrone, N., Pellemoine, F., Prebys, E., Qin, Q., Power, J., Roser, T., Sabbi, G., Stratakis, D., Sun, Y. -E., Tang, J., Valishev, A., Weise, H., Zimmermann, F., Zlobin, A. V., and Zwaska, R.
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Physics - Accelerator Physics ,High Energy Physics - Experiment - Abstract
In 2020-2022, extensive discussions and deliberations have taken place in corresponding topical working groups of the Snowmass Accelerator Frontier (AF) and in numerous joint meetings with other Frontiers, Snowmass-wide meetings, a series of Colloquium-style Agoras, cross-Frontier Forums on muon and electron-positron colliders and the collider Implementation Task Force (ITF). The outcomes of these activities are summarized in this Accelerator Frontier report., Comment: contribution to Snowmass'21, v.2 (final)
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- 2022
215. Boson-jet and jet-jet azimuthal correlations at high transverse momenta
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van Kampen, A. M., Martinez, A. Bermudez, Banos, L. I. Estevez, Hautmann, F., Jung, H., Mendizabal, M., Figueroa, K. Moral, Prestel, S., Monfared, S. Taheri, Wang, Q., Wichmann, K., and Yang, H.
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High Energy Physics - Phenomenology - Abstract
We discuss our recent results on azimuthal distributions in vector boson + jets and multi-jet production at the LHC, obtained from the matching of next-to-leading order (NLO) perturbative matrix elements with transverse momentum dependent (TMD) parton branching. We present a comparative analysis of boson-jet and jet-jet correlations in the back to-back region, and a study of the theoretical systematic uncertainties associated with the matching scale in the cases of TMD and collinear parton showers., Comment: 6 pages, 2 figures, contribution to proceedings of ICHEP 2022
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- 2022
216. Suppressing Amplitude Damping in Trapped Ions: Discrete Weak Measurements for a Non-unitary Probabilistic Noise Filter
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Rodriguez-Blanco, Andrea, Whaley, K. Birgitta, and Bermudez, Alejandro
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Quantum Physics - Abstract
The idea of exploiting maximally-entangled states as a resource lies at the core of several modalities of quantum information processing, including secure quantum communication, quantum computation, and quantum sensing. However, due to imperfections during or after the entangling gates used to prepare such states, the amount of entanglement decreases and their quality as a resource gets degraded. We introduce a low-overhead protocol to reverse this degradation by partially filtering out a specific type of noise relevant to many quantum technologies. We present two trapped-ion schemes for the implementation of a non-unitary probabilistic filter against amplitude damping noise, which can protect any maximally-entangled pair from spontaneous photon scattering during or after the two-qubit trapped-ion entangling gates. This filter can be understood as a protocol for single-copy quasi-distillation, as it uses only local operations to realise a reversal operation that can be understood in terms of weak measurements., Comment: 16 pages and 6 Figures
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- 2022
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217. Electrochromic windows based on luminescent acrylate/ionosilicas
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Pinheiro, Daniela, Pereira, Rui F. P., Gonçalves, Alexandra, Correia, Sandra F. H., Silva, M. Manuela, Fortunato, Elvira, Gonçalves, Maria Cristina, Ferreira, Rute A. S., and de Zea Bermudez, Verónica
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- 2024
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218. Feasibility of allogeneic hematopoietic stem cell transplantation in advanced age
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Fernandez-Luis, Sara, Gomez Lamas, David, Cerezo Martin, Juan Manuel, Mora Barrios, Juan Manuel, Yañez San Segundo, Lucrecia, Sanchez Escamilla, Miriam, Fernandez-Escalada, Noemi, Calvo Sanchez, Jose Alvaro, Fernandez Garcia, Sergio, Dominguez-Garcia, Juan Jose, Colorado Araujo, Mercedes, Lopez-Duarte, Monica, Martin-Sanchez, Guillermo, Insunza Gaminde, Andres, Romon Alonso, Jose Iñigo, Lobeira Rubio, Rocio, Arroyo Rodriguez, Jose Luis, Rueda Ciller, Beatriz, Hermosilla Fernandez, Mar, Marco Betes, Victor, Ocio, Enrique Maria, and Bermudez Rodriguez, Arancha
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- 2024
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219. Charting quantum horizons to establish a roadmap for microarcsecond astronomy
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Lau, Ryan M., Ashok, Amit, Emms, Julie, Gies, Douglas R., Guha, Saikat, Hartman, Zachary, McClinton, Brittany, Monnier, John, Rajagopal, Jayadev K., Richardson, J. Gabriel, Ridgway, Stephen T., Sanchez-Bermudez, Joel, Schaefer, Gail, Smith, Brian J., and Suleymanzade, Aziza
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- 2024
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220. Incontinence-Associated Dermatitis: a Practical Guide for the Consulting Dermatologist
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Maskan Bermudez, Narges, Sa, Brianna Christina, Yaghi, Marita, Hargis, Abby, and Elman, Scott A.
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- 2023
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221. Long-term follow-up of patients with high-risk facial basal cell carcinoma treated with interferon
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Vladimir Sánchez, Emilio Carpio, Vicente Eloy Fardales, Belkys Martínez, Ana Iris Arias, Elizabeth Brito, Niurka Bermudez, and Yoel Rodríguez
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Carcinoma, basal cell ,Dermatology ,Interferons ,Therapeutics ,RL1-803 - Abstract
Abstract Background Surgery is the treatment of choice for patients with basal cell carcinoma (BCC). When surgery is not a choice, only radiotherapy is recommended for patients with high-risk facial BCC. Interferon could be an acceptable therapeutic option for these patients. Objective To evaluate the long-term clinical response to interferon therapy in patients with high-risk facial BCC. Methods Patients with high-risk facial BCC were treated with perilesional injections of alpha-2b+ gamma interferons. Those with incomplete clinical response were reevaluated, their residual tumors excised, and declared cured. Patients treated with interferon and those treated with interferon plus surgery were followed for five years. Time to recurrence and the emergence of a new facial BCC were estimated by Kaplan-Meier survival analysis. Adverse events were documented. Results This study included 195 participants; 143 (73.3%) showed a complete response (95% CI 67.2‒80.1). Patients developed recurrence after a mean of 55 months (95% CI 53.8‒57.4). The estimated rate of recurrence was 12.3% (95% CI 7.4‒17.1). Patients developed a new BCC after a mean of 52.7 months (95% CI 50.4‒54.9). The estimated rate for development of a new BCC was 20.0% (95% CI 14.4‒25.9). Fifteen (7.7%) patients abandoned the study during follow-up. Adverse events were frequent but moderate or mild; fever and local pain were the most frequent. Study limitations Observational cohort design without a control group for comparison. Conclusions Perilesional injections of alpha-2b+ gamma interferons in patients with facial high-risk BCC offer a satisfactory cure rate after five years of follow-up with an acceptable safety profile.
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- 2024
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222. Management of immunosuppression in lung transplant recipients and COVID-19 outcomes: an observational retrospective cohort-study
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Hugo Bes-Berlandier, Benjamin Coiffard, Julien Bermudez, Nadine Demazes-dufeu, Bérengère Coltey, Céline Boschi, Philippe Colson, Sami Hraiech, Martine Reynaud-Gaubert, and Nadim Cassir
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Lung transplantation ,COVID-19 ,SARS-CoV-2 ,Immunosuppression therapy ,Risk factors ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background The aim of this study was to assess the impact of immunosuppression management on coronavirus disease 2019 (COVID-19) outcomes. Methods We performed a single-center retrospective study in a cohort of 358 lung transplant recipients (LTx) over the period from March 2020 to April 2022. All included symptomatic patients had at least one positive SARS-CoV-2 rt-PCR. We used a composite primary outcome for COVID-19 including increased need for oxygen since the hospital admission, ICU transfer, and in-hospital mortality. We assessed by univariate and multivariate analyses the risk factors for poor outcomes. Results Overall, we included 91 LTx who contracted COVID-19. The COVID-19 in-hospital mortality rate reached 4.4%. By hierarchical clustering, we found a strong and independent association between the composite poor outcome and the discontinuation of at least one immunosuppressive molecule among tacrolimus, cyclosporine, mycophenolate mofetil, and everolimus. Obesity (OR = 16, 95%CI (1.96; 167), p = 0.01) and chronic renal failure (OR = 4.6, 95%CI (1.4; 18), p = 0.01) were also independently associated with the composite poor outcome. Conversely, full vaccination was protective (OR = 0.23, 95%CI (0.046; 0.89), p = 0.047). Conclusion The administration of immunosuppressive drugs such as tacrolimus, cyclocporine or everolimus can have a protective effect in LTx with COVID-19, probably related to their intrinsic antiviral capacity.
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- 2024
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223. Fishes (Actinopterygii) of the rapids and associated environments in the lower Vaupés River Basin: an undiscovered Colombian Amazon diversity
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Alexander Urbano-Bonilla, Jorge E. Garcia-Melo, Mateo Esteban Peña-Bermudez, Omar Eduardo Melo-Ortiz, Oscar Stiven Ordoñez, Sandra Bibiana Correa, Tiago P. Carvalho, and Javier A. Maldonado-Ocampo
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Zoology ,QL1-991 - Abstract
The Vaupés River stands out as one of the few within the Amazon basin due to its numerous rapids. These riverine fast-flowing sections not only provide habitat to highly specialized fishes but also function as natural barriers hindering the movement of fish along its course. During a fish-collecting expedition in the lower Vaupés River basin in Colombia, 95 species were registered belonging to 30 families and seven orders. Despite recent inventories in the region, our comprehensive sampling efforts particularly focused on the rapids and associated rheophilic fauna, allowing us to contribute the first records of four fish species in Colombia (Myloplus lucienae Andrade, Ota, Bastos & Jégu, 2016, Tometes makue Jégu, Santos & Jégu, 2002, also first record of the genus, Leptodoras praelongus (Myers & Weitzman, 1956), and Eigenmannia matintapereira Peixoto, Dutra & Wosiacki, 2015) and six presumably undescribed species (i.e., Jupiaba sp., Moenkhausia sp., Phenacogaster sp., Bunocephalus sp., Hemiancistrus sp., and Archolaemus sp.). In this study, a commented list of the ichthyofauna of these environments is presented, as well as a photographic catalog of fish species integrated into the CaVFish Project – Colombia.
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- 2024
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224. An interpretable data-driven prediction model to anticipate scoliosis in spinal muscular atrophy in the era of (gene-) therapies
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Tu-Lan Vu-Han, Rodrigo Bermudez Schettino, Claudia Weiß, Carsten Perka, Tobias Winkler, Vikram Sunkara, and Matthias Pumberger
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Medicine ,Science - Abstract
Abstract 5q-spinal muscular atrophy (SMA) is a neuromuscular disorder (NMD) that has become one of the first 5% treatable rare diseases. The efficacy of new SMA therapies is creating a dynamic SMA patient landscape, where disease progression and scoliosis development play a central role, however, remain difficult to anticipate. New approaches to anticipate disease progression and associated sequelae will be needed to continuously provide these patients the best standard of care. Here we developed an interpretable machine learning (ML) model that can function as an assistive tool in the anticipation of SMA-associated scoliosis based on disease progression markers. We collected longitudinal data from 86 genetically confirmed SMA patients. We selected six features routinely assessed over time to train a random forest classifier. The model achieved a mean accuracy of 0.77 (SD 0.2) and an average ROC AUC of 0.85 (SD 0.17). For class 1 ‘scoliosis’ the average precision was 0.84 (SD 0.11), recall 0.89 (SD 0.22), F1-score of 0.85 (SD 0.17), respectively. Our trained model could predict scoliosis using selected disease progression markers and was consistent with the radiological measurements. During post validation, the model could predict scoliosis in patients who were unseen during training. We also demonstrate that rare disease data sets can be wrangled to build predictive ML models. Interpretable ML models can function as assistive tools in a changing disease landscape and have the potential to democratize expertise that is otherwise clustered at specialized centers.
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- 2024
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225. Targeted small molecule inhibitors blocking the cytolytic effects of pneumolysin and homologous toxins
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Umer Bin Abdul Aziz, Ali Saoud, Marcel Bermudez, Maren Mieth, Amira Atef, Thomas Rudolf, Christoph Arkona, Timo Trenkner, Christoph Böttcher, Kai Ludwig, Angelique Hoelzemer, Andreas C. Hocke, Gerhard Wolber, and Jörg Rademann
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Science - Abstract
Abstract Pneumolysin (PLY) is a cholesterol-dependent cytolysin (CDC) from Streptococcus pneumoniae, the main cause for bacterial pneumonia. Liberation of PLY during infection leads to compromised immune system and cytolytic cell death. Here, we report discovery, development, and validation of targeted small molecule inhibitors of PLY (pore-blockers, PB). PB-1 is a virtual screening hit inhibiting PLY-mediated hemolysis. Structural optimization provides PB-2 with improved efficacy. Cryo-electron tomography reveals that PB-2 blocks PLY-binding to cholesterol-containing membranes and subsequent pore formation. Scaffold-hopping delivers PB-3 with superior chemical stability and solubility. PB-3, formed in a protein-templated reaction, binds to Cys428 adjacent to the cholesterol recognition domain of PLY with a K D of 256 nM and a residence time of 2000 s. It acts as anti-virulence factor preventing human lung epithelial cells from PLY-mediated cytolysis and cell death during infection with Streptococcus pneumoniae and is active against the homologous Cys-containing CDC perfringolysin (PFO) as well.
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- 2024
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226. AZGP1 deficiency promotes angiogenesis in prostate cancer
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Ru M. Wen, Zhengyuan Qiu, G. Edward W. Marti, Eric E. Peterson, Fernando Jose Garcia Marques, Abel Bermudez, Yi Wei, Rosalie Nolley, Nathan Lam, Alex LaPat Polasko, Chun-Lung Chiu, Dalin Zhang, Sanghee Cho, Grigorios Marios Karageorgos, Elizabeth McDonough, Chrystal Chadwick, Fiona Ginty, Kyeong Joo Jung, Raghu Machiraju, Parag Mallick, Laura Crowley, Jonathan R. Pollack, Hongjuan Zhao, Sharon J. Pitteri, and James D. Brooks
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AZGP1 ,Angiogenesis ,Tumor microenvironment ,Fibrosis ,Prostate cancer ,Medicine - Abstract
Abstract Background Loss of AZGP1 expression is a biomarker associated with progression to castration resistance, development of metastasis, and poor disease-specific survival in prostate cancer. However, high expression of AZGP1 cells in prostate cancer has been reported to increase proliferation and invasion. The exact role of AZGP1 in prostate cancer progression remains elusive. Method AZGP1 knockout and overexpressing prostate cancer cells were generated using a lentiviral system. The effects of AZGP1 under- or over-expression in prostate cancer cells were evaluated by in vitro cell proliferation, migration, and invasion assays. Heterozygous AZGP1± mice were obtained from European Mouse Mutant Archive (EMMA), and prostate tissues from homozygous knockout male mice were collected at 2, 6 and 10 months for histological analysis. In vivo xenografts generated from AZGP1 under- or over-expressing prostate cancer cells were used to determine the role of AZGP1 in prostate cancer tumor growth, and subsequent proteomics analysis was conducted to elucidate the mechanisms of AZGP1 action in prostate cancer progression. AZGP1 expression and microvessel density were measured in human prostate cancer samples on a tissue microarray of 215 independent patient samples. Result Neither the knockout nor overexpression of AZGP1 exhibited significant effects on prostate cancer cell proliferation, clonal growth, migration, or invasion in vitro. The prostates of AZGP1−/− mice initially appeared to have grossly normal morphology; however, we observed fibrosis in the periglandular stroma and higher blood vessel density in the mouse prostate by 6 months. In PC3 and DU145 mouse xenografts, over-expression of AZGP1 did not affect tumor growth. Instead, these tumors displayed decreased microvessel density compared to xenografts derived from PC3 and DU145 control cells, suggesting that AZGP1 functions to inhibit angiogenesis in prostate cancer. Proteomics profiling further indicated that, compared to control xenografts, AZGP1 overexpressing PC3 xenografts are enriched with angiogenesis pathway proteins, including YWHAZ, EPHA2, SERPINE1, and PDCD6, MMP9, GPX1, HSPB1, COL18A1, RNH1, and ANXA1. In vitro functional studies show that AZGP1 inhibits human umbilical vein endothelial cell proliferation, migration, tubular formation and branching. Additionally, tumor microarray analysis shows that AZGP1 expression is negatively correlated with blood vessel density in human prostate cancer tissues. Conclusion AZGP1 is a negative regulator of angiogenesis, such that loss of AZGP1 promotes angiogenesis in prostate cancer. AZGP1 likely exerts heterotypical effects on cells in the tumor microenvironment, such as stromal and endothelial cells. This study sheds light on the anti-angiogenic characteristics of AZGP1 in the prostate and provides a rationale to target AZGP1 to inhibit prostate cancer progression.
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- 2024
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227. Peñacalera (Obejo, Córdoba). Biografía de un contexto sepulcral con restos orgánicos de la Edad del Cobre
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Rafael Martínez Sánchez, María Dolores Bretones García, María J. Martínez Fernández, Inmaculada López Flores, Rosa Maroto Benavides, Carmen M Román Muñoz, Pedro Henriquez Valido, Margarita Gleba, Miriam Cubas Morera, Alberto Dorado Alejos, Rafael Bermudez Cano, Abén Aljama Martínez, Gloria M. Lara Mengual, and Juan Carlos Vera Rodríguez
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edad del cobre ,sur de iberia ,antropología física ,arqueoentomología ,cuevas sepulcrales ,textiles prehistóricos ,Archaeology ,CC1-960 - Abstract
Las prácticas funerarias del IV y III milenio cal ac se caracterizan en la mayor parte de la Península Ibérica por la generalización de la arquitectura megalítica, en paralelo a las importantes transformaciones sociales que tienen lugar a lo largo de la denominada Edad del Cobre. Al mismo tiempo, proliferan enterramientos colectivos en cuevas naturales en zonas montañosas del área meridional de Iberia, muchos de los cuales parecen compartir usos similares a los propios de cámaras ortostáticas. En este trabajo presentaremos el sorprendente caso del yacimiento de Peñacalera, en Obejo, provincia de Córdoba, una pequeña cavidad funeraria situada en un prominente afloramiento rocoso situado en el macizo de Sierra Morena descubierta en 2014. El contexto funerario comprende los restos óseos de al menos cinco individuos, asociados a elementos de ajuar como vasos cerámicos, y elementos de naturaleza orgánica en un notable estado de conservación, especialmente placas de corcho de alcornoque y algunos fragmentos textiles. El análisis de las dataciones radiocarbónicas efectuadas apunta a dos fases de uso diferenciadas, una en el tercer cuarto del iv y otra a mediados del III milenio cal AC.
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- 2024
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228. Economic crimes and determination of authorship. Discussion points and proposed solutions in Colombia
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Yonni Albeiro Bermudez Bermudez
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authorship ,criminality ,economic crimes ,responsibility ,enterprise ,Law in general. Comparative and uniform law. Jurisprudence ,K1-7720 - Abstract
Criminality in the business environment has become a topic that currently generates much academic discussion, especially if the classic formulas for determining authorship and participation are adequate to respond to these new criminal phenomena. Various ideas for solutions have been proposed, but none of them has been free of criticism. In this context, we sought to analyze the formulas provided in the Colombian penal code to determine whether they are prepared to curb this new scourge. Based on a descriptive model of doctrinal and legal review, the results show that they must undergo a process of modernization to adapt to the new scenarios of criminality in the business context.
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- 2024
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229. Evaluation of computed tomography in the diagnosis of ultrasound-proven diaphragm dysfunction
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Pauline Lallement, Alain Boussuges, Paul Habert, Julien Bermudez, Martine Reynaud-Gaubert, Stéphane Delliaux, Fabienne Bregeon, and Benjamin Coiffard
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Diaphragm ,Ultrasonography ,X-Ray computed tomography ,Physiology ,Respiratory physiological phenomena ,Musculoskeletal physiological phenomena ,Diseases of the respiratory system ,RC705-779 - Abstract
Abstract Introduction Computed tomography (CT) is routinely employed on the evaluation of dyspnea, yet limited data exist on its assessment of diaphragmatic muscle. This study aimed to determine the capability of CT in identifying structural changes in the diaphragm among patients with ultrasound-confirmed diaphragmatic dysfunction. Methods Diaphragmatic ultrasounds conducted between 2018 and 2021 at our center in Marseille, France, were retrospectively collected. Diaphragmatic pillars were measured on CT scans at the L1 level and the celiac artery. Additionally, the difference in height between the two diaphragmatic domes in both diaphragmatic dysfunction cases and controls was measured and compared. Results A total of 65 patients were included, comprising 24 with diaphragmatic paralysis, 13 with diaphragmatic weakness, and 28 controls. In the case group (paralysis and weakness) with left dysfunctions (n = 24), the CT thickness of the pillars at the level of L1 and the celiac artery was significantly thinner compared with controls (2.0 mm vs. 7.4 mm and 1.8 mm vs. 3.1 mm, p
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- 2024
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230. Teledermatology in alopecia: A systematic review
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Narges Maskan Bermudez, BS, Sofia Perez, BS, Betty Nguyen, MD, and Antonella Tosti, MD
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alopecia ,digital health ,teledermatology ,telehealth ,telemedicine ,Dermatology ,RL1-803 - Published
- 2024
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231. 3D orbital architecture of a dwarf binary system and its planetary companion
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Curiel, Salvador, Ortiz-León, Gisela N., Mioduszewski, Amy J., and Sanchez-Bermudez, Joel
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Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
Because of the diversity of stellar masses and orbital sizes of binary systems, and the complex interaction between star-star, star-planet and planet-planet, it has been difficult to fully characterize the planetary systems associated with binary systems. Here, we report high-precision astrometric observations of the low-mass binary system GJ 896AB, revealing the presence of a Jupiter-like planetary companion (GJ 896Ab). The planetary companion is associated to the main star GJ 896A, with an estimated mass of 2.3 Jupiter masses and an orbit period of 284.4 days. A simultaneous analysis of the relative astrometric data obtained in the optical and infrared with several telescopes, and the absolute astrometric data obtained at radio wavelengths with the Very Long Baseline Array (VLBA), reveals, for the first time, the fully characterized three-dimensional (3D) orbital plane orientation of the binary system and the planetary companion. The planetary and binary orbits are found to be in a retrograde configuration and with a large mutual inclination angle ($\Phi$ = 148 deg) between both orbital planes. Characterizing the 3D orbital architecture of binary systems with planets is important in the context of planet formation, as it could reveal whether the systems were formed by disk fragmentation or turbulence fragmentation, as well as the origin of spin-orbit misalignment. Furthermore, since most stars are in binary or multiple systems, our understanding of systems such as this one will help to further understand the phenomenon of planetary formation in general., Comment: 37 pages, 4 Tables and 13 Figures. Accepted for publication in AJ
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- 2022
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232. Accelerator Technology Magnets
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Bermudez, S. Izquierdo, Sabbi, G., and Zlobin, A. V.
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Physics - Accelerator Physics - Abstract
The Snowmass community exercise started in April 2020 to identify and document a scientific vision for the future of particle physics in the US and international partners. The AF7-Magnets working group was charged to a) address the potential contributions of magnet technology to future HEP facilities, b) evaluate the R\&D required to enable these opportunities, c) estimate the time and cost scales of these efforts, and d) assess the needs for associated fabrication infrastructure and test facilities. This report addresses the working group charge, summarizes the status of accelerator and detector magnet technologies, and discuss ideas and plans to push this key area of the US and international HEP to new horizons.
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- 2022
233. Azimuthal di-jet correlations with parton branching TMD distributions
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Martinez, A. Bermudez and Hautmann, F.
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High Energy Physics - Phenomenology - Abstract
The parton branching formulation of TMD evolution has recently been used to make predictions for jet observables at the Large Hadron Collider (LHC), including perturbative matching at next-to-leading order (NLO). This contribution presents results for the azimuthal \Delta-\phi correlations in events with di-jets at large transverse momentum. It focuses on the back-to-back region of large \Delta-\phi and discusses prospects for detailed studies of QCD dynamics in this region at the LHC., Comment: 7 pages. Contribution at XXIX International Workshop on Deep-Inelastic Scattering and Related Subjects (May 2022)
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- 2022
234. Complete numerical description of the laser-induced thermal profile in a liquid, to explain complex self-induced diffraction patterns
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Domínguez-Juárez, J. L., Quiroz-Juárez, M. A., Aragón, J. L., Quintero-Bermúdez, R., and Quintero-Torres, R.
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Physics - Optics ,Physics - Computational Physics ,Physics - Fluid Dynamics - Abstract
In the past, laser propagation in a fluid with heat transfer has been modeled using simplistic conduction and convection conditions yielding inaccurate predictions. Here we present a detailed numerical study describing the thermal profile of the fluid and its interaction with the laser. Furthermore, we evaluate the diffraction field in the far field produced by a pump beam impinging in the fluid and the interferometric pattern obtained normal to the propagation direction to test our model. Direct comparison between experimental results and numerical simulation allows for a complete understanding of the energy transfer from the laser to the liquid and the subsequent effect on the laser propagation. Spatial self-phase modulation and propagation control from small-phase diffraction to aberration-controlled diffraction and up to diffraction oscillation are observed and explained with our modeling.
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- 2022
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235. Multi-jet Merging with TMD Parton Branching
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Martinez, A. Bermudez, Hautmann, F., and Mangano, M. L.
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High Energy Physics - Phenomenology - Abstract
One of the main theoretical systematics in studies of final states with large jet multiplicities at high-energy hadron colliders is associated with the merging of QCD parton showers and hard-scattering matrix elements. We present a method to incorporate the physics of transverse momentum recoils due to initial-state shower evolution into multi-jet merging algorithms by using the concept of transverse momentum dependent (TMD) distributions and the associated parton branching. We investigate the dependence on the merging scale and illustrate the impact of the new method at the level of both exclusive and inclusive final-state observables by studying differential jet rates, transverse momentum spectra and multiplicity distributions, using vector boson + jets events at the LHC as a case study., Comment: Latex, 43 pages; version v2: typos corrected, additional comments and references inserted
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- 2022
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236. Probing the innermost region of the AU~Microscopii debris disk
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Gallenne, A., Desgrange, C., Milli, J., Sanchez-Bermudez, J., Chauvin, G., Kraus, S., Girard, J. H., Boccaletti, A., Lagrange, A. M., and Delorme, P.
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Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
AU Mic is a young and nearby M-dwarf star harbouring a circumstellar debris disk and one recently discovered planet on an 8d orbit. Large-scale structures within the disk were also discovered and are moving outward at high velocity. We aim at studying this system with the highest spatial resolution in order to probe the innermost regions and to search for additional low-mass companion or set detection limits. The star was observed with two different techniques probing complementary spatial scales. We obtained new SAM observations with SPHERE, which we combined with data from NACO, PIONIER and GRAVITY. We did not detect additional companions within 0.02-7au from the star. We determined magnitude upper limits for companions of H~9.8mag within 0.02-0.5au, Ks~11.2mag within 0.4-2.4au and L'~10.7mag within 0.7-7au. Using theoretical isochrones, we converted into mass upper limits of ~17Mjup, ~12Mjup and ~9jup, respectively. The PIONIER observations allowed us to determine the angular diameter of AU Mic, 0.825+/-0.050mas, which converts to R = 0.862+/-0.052Rsun. We did not detect the newly discovered planets, but we derived upper limit masses for the innermost region of AU Mic. We do not have any detection with a significance beyond 3sigma, the most significant signal with PIONIER being 2.9sigma and with SPHERE being 1.6\sigma. We applied the pyMESS2 code to estimate the detection probability of companions by combining radial velocities, SPHERE imaging and our interferometric detection maps. We show that 99% of the companions down to ~0.5Mjup can be detected within 0.02au or 1Mjup down to 0.2au. The low-mass planets orbiting at <0.11au will not be directly detectable with the current AO and interferometric instruments due to its close orbit and very high contrast (~10e-10 in K). It will be also below the angular resolution and contrast limit of the next ELT IR imaging instruments., Comment: Accepted for publication in A&A. 15 pages. New version includes two new co-authors
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- 2022
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237. Fuel savings through missed approach maneuvers based on aircraft reinjection
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Carmona, María, Casado, Rafael, Bermúdez, Aurelio, Francisco, Miguel Pérez, Boronat, Pablo, and Calafate, Carlos T.
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Electrical Engineering and Systems Science - Systems and Control ,J.2 - Abstract
Humanity is facing global challenges related to climate change, along with an energetic crisis that urgently requires optimizing any process or system able to improve global economic conditions. Taking fuel as an example, its prices are among the highest increases detected in goods of general use. In this sense, initiatives to mitigate fuel consumption are both welcome and necessary. In the aerial transportation area, fuel costs are critical to the economic viability of companies, and so urgent measures should be adopted to avoid any unnecessary increase of operational costs. In this work we study the costs involved in a standard procedure following a missed approach. In addition, we study the improvements achieved with a fast reinjection scheme proposed in a prior work. Experimental results show that, for a standard A320 aircraft, fuel savings ranging from 55% to 90% can be achieved through our proposed method.
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- 2022
238. Determination of Collins-Soper kernel from cross-sections ratios
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Martinez, Armando Bermudez and Vladimirov, Alexey
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High Energy Physics - Phenomenology - Abstract
We present a novel method of extraction of the Collins-Soper kernel directly from the comparison of differential cross-sections measured at different energies. Using this method, we analyze the pseudo-data generated by the CASCADE event generator and extract the Collins-Soper kernel predicted by the parton-branching model in the wide range of transverse distances. The procedure can be applied, with minor modifications, to the real measured data for Drell-Yan and SIDIS processes., Comment: 4 pages, 4 figures
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- 2022
239. Systematic literature review and meta-analysis on the prevalence of rotavirus genotypes in Europe and the Middle East in the post-licensure period
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Tim Jesudason, Oluwaseun Sharomi, Kelly Fleetwood, Alex Lapting Cheuk, Maria Bermudez, Hannah Schirrmacher, Christian Hauck, Jelle Matthijnssens, Daniel Hungerford, David Tordrup, and Cristina Carias
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Rotavirus ,vaccination ,epidemiology ,child health ,diarrhoea ,Immunologic diseases. Allergy ,RC581-607 ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Previous systematic literature reviews of rotavirus genotype circulation in Europe and the Middle East are limited because they do not include country-specific prevalence data. This study documents country-specific evidence on the prevalence of rotavirus genotypes in Europe and the Middle East to enable more precise epidemiological modeling and contribute to the evidence-base about circulating rotavirus genotypes in the post-vaccination era. This study systematically searched PubMed, Embase and Scopus for all empirical epidemiological studies that presented genotype-specific surveillance data for countries in Europe and the Middle East published between 2006 and 2021. The STROBE checklist was used to assess the quality of included studies. Proportional meta-analysis was conducted using the generic inverse variance method with arcsine transformation and generalized linear-mixed models to summarize genotype prevalence. Our analysis estimated the genotype prevalence by country across three date categories corresponding with rotavirus seasons: 2006–2010, 2011–2015, 2016–2021. A total of 7601 deduplicated papers were identified of which 88 studies were included in the final review. Rotavirus genotypes exhibited significant variability across regions and time periods, with G1P[8], G2P[4], G3P[8], G4P[8], G9P[8], and, to a lesser extent G12P[8], being the most prevalent genotypes through different regions and time-periods. Uncommon genotypes included G3P[9] in Poland, G2P[6] in Iraq, G4P[4] in Qatar, and G9P[4] as reported by the European Rotavirus Network. There was high genotype diversity with routinely identified genotypes being G1P[8], G2P[4], G3P[8], G4P[8], and G9P[8]; there was high variability across time periods and regions. Continued surveillance at the national and regional levels is relevant to support further research and inform public health decision-making.
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- 2024
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240. Proteolytic bacteria expansion during colitis amplifies inflammation through cleavage of the external domain of PAR2
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Liam Emile Rondeau, Bruna Barbosa Da Luz, Alba Santiago, Miriam Bermudez-Brito, Amber Hann, Giada De Palma, Jennifer Jury, Xuanyu Wang, Elena Francisca Verdu, Heather Jean Galipeau, Corinne Rolland, Celine Deraison, Wolfram Ruf, Premysl Bercik, Nathalie Vergnolle, and Alberto Caminero
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Inflammatory bowel disease ,proteolytic activity ,inflammation ,colitis ,DSS-induced colitis ,protease-activated receptor 2 (PAR2) ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Imbalances in proteolytic activity have been linked to the development of inflammatory bowel diseases (IBD) and experimental colitis. Proteases in the intestine play important roles in maintaining homeostasis, but exposure of mucosal tissues to excess proteolytic activity can promote pathology through protease-activated receptors (PARs). Previous research implicates microbial proteases in IBD, but the underlying pathways and specific interactions between microbes and PARs remain unclear. In this study, we investigated the role of microbial proteolytic activation of the external domain of PAR2 in intestinal injury using mice expressing PAR2 with a mutated N-terminal external domain that is resistant to canonical activation by proteolytic cleavage. Our findings demonstrate the key role of proteolytic cleavage of the PAR2 external domain in promoting intestinal permeability and inflammation during colitis. In wild-type mice expressing protease-sensitive PAR2, excessive inflammation leads to the expansion of bacterial taxa that cleave the external domain of PAR2, exacerbating colitis severity. In contrast, mice expressing mutated protease-resistant PAR2 exhibit attenuated colitis severity and do not experience the same proteolytic bacterial expansion. Colonization of wild-type mice with proteolytic PAR2-activating Enterococcus and Staphylococcus worsens colitis severity. Our study identifies a previously unknown interaction between proteolytic bacterial communities, which are shaped by inflammation, and the external domain of PAR2 in colitis. The findings should encourage new therapeutic developments for IBD by targeting excessive PAR2 cleavage by bacterial proteases.
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- 2024
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241. The mediational role of positive youth development in the relationship between physical activity and health-related quality of life in adolescents from urban and rural environments
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Esther Lopez-Bermudez, Diego Gomez-Baya, Elena Planells, and Jorge Molina-Lopez
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Physical activity ,subjective well-being ,positive youth development ,adolescence ,environment ,mediation ,Special aspects of education ,LC8-6691 ,The family. Marriage. Woman ,HQ1-2044 - Abstract
ABSTRACTThe aim of this study was to analyse the role of the 5Cs of Positive Youth Development (PYD) in the relationship between physical activity (PA) and health-related quality of life (HRQoL), in a sample of adolescents enrolled at public secondary schools in both rural and urban environments in Huelva (Spain). The sample comprised 418 adolescents (Mean age = 14.40; SD = 1.20; 53% boys). A cross-sectional design was employed. PA (PAQ-A), Adherence to the Mediterranean Diet (KIDMED), PYD and HRQoL (KIDSCREEN-27) were assessed using self-report questionnaires. The results indicated that adolescents from rural environments were more physically active and achieved higher scores in PYD and HRQoL dimensions compared to those from urban environments. Mediation analyses demonstrated that the competence dimension of PYD positively mediated the relationship between PA and HRQoL. Consequently, this study highlights the importance of implementing PA interventions considering PYD and its positive impact on HRQoL.
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- 2024
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242. Essay of thinking entrepreneurship in the covid-19 era
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Rincon Ornelas, Rosa Maria, Garcia Lirios, Cruz, Carreon Guillen, Javier, Bustos Aguayo, Jose Marcos, Juarez Najera, Margarita, Hernandez Valdes, Jorge, Bermudez Ruiz, Gilberto, and Sanchez, Arturo Sanchez
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- 2022
243. Differential response of three large mammal species to human recreation in the Rocky Mountains of Colorado, USA
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Uetrecht, Madison R, Bermudez, April, Novoa, Daniel, Reithel, Jennifer, Rodriguez, Vaneza, Smith, Rosemary, Sprott, Shannon, Tingley, Morgan W, and Blumstein, Daniel T
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Environmental Sciences ,Ecological Applications ,Environmental Management ,Life on Land ,coyote ,ecotourism ,human impacts on wildlife ,mule deer ,occupancy modeling ,red fox ,Architecture ,Environmental management ,Heritage ,archive and museum studies - Abstract
Outdoor recreation benefits local economies, environmental education, and public health and wellbeing, but it can also adversely affect local ecosystems. Human presence in natural areas alters feeding and reproductive behaviors, physiology, and population structure in many wildlife species, often resulting in cascading effects through entire ecological communities. As outdoor recreation gains popularity, existing trails are becoming overcrowded and new trails are being built to accommodate increasing use. Many recreation impact studies have investigated effects of the presence or absence of humans while few have investigated recreation effects on wildlife using a gradient of disturbance intensity. We used camera traps to quantify trail use by humans and mid- to large-sized mammals in an area of intense outdoor recreation–the Upper East River Valley, Colorado, USA. We selected five trails with different types and intensities of human use and deployed six cameras on each trail for five weeks during a COVID-enhanced 2020 summer tourism season. We used occupancy models to estimate detectability and habitat use of the three most common mammal species in the study area and determined which human activities affect the habitat use patterns of each species. Human activities affected each species differently. Mule deer (Odocoileus hemionus) tended to use areas with more vehicles, more predators, and greater distances from the trailhead, and they were more likely to be detected where there were more bikers. Coyotes (Canis latrans) and red foxes (Vulpes vulpes) were most likely to use areas where their prey species occurred, and foxes were more likely to be detected where the vegetation was shorter. Humans and their recreational activities differentially influence different species. More generally, these results reinforce that it is unlikely that a single management policy is suitable for all species and management should thus be tailored for each target species.
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- 2023
244. Challenges and Lessons Learned From Fabrication, Testing, and Analysis of Eight MQXFA Low Beta Quadrupole Magnets for HL-LHC
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Ambrosio, Giorgio, Amm, Kathleen, Anerella, Michael, Apollinari, Giorgio, Izquierdo, Gonzalo Arnau, Baldini, Maria, Ballarino, Amalia, Barth, Christian, Yahia, Anis Ben, Blowers, James, De Sousa, P Borges, Bossert, R, Bulat, Bartosz Wojciech, Carcagno, Ruben H, Cheng, Daniel W, Chlachidze, G, Cooley, Lance, Crouvizier, Mickael, Devred, Arnaud, DiMarco, Joseph, Feher, Sandor, Ferracin, Paolo, Troitino, Jose Ferradas, Fajardo, Laura Garcia, Gourlay, S, Hocker, Henry M, Bermudez, Susana Izquierdo, Joshi, Piyush, Krave, Steven T, Lee, Elizabeth Marie, Levitan, Jeremy W, Lombardo, Vito, Lu, Jun, Marchevsky, Maxim, Marinozzi, Vittorio, Moros, Alice, Muratore, Joseph F, Naus, Michael, Nobrega, Alfred, Page, T, Pong, Ian, Perez, JC, Prestemon, Soren, Ray, Katherine L, Sabbi, GianLuca, Schmalzle, Jesse, Seyl, J, Sgobba, Stefano, Stoynev, S, Strauss, T, Todesco, Ezio, Turrioni, Daniele, Vallone, Giorgio, Van Weelderen, R, Wanderer, P, Wang, X, and Yu, Miao
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Nuclear and Plasma Physics ,Physical Sciences ,Accelerator magnets ,HL-LHC ,Nb3Sn ,super-conducting magnets ,ATAP-GENERAL ,ATAP-SMP ,ATAP-2023 ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics ,Electrical engineering ,Condensed matter physics - Abstract
By the end of October 2022, the US HL-LHC Accelerator Upgrade Project (AUP) had completed fabrication of ten MQXFA magnets and tested eight of them. The MQXFA magnets are the low-beta quadrupole magnets to be used in the Q1 and Q3 Inner Triplet elements of the High Luminosity LHC. This AUP effort is shared by BNL, Fermilab, and LBNL, with strand verification tests at NHMFL. An important step of the AUP QA plan is the testing of MQXFA magnets in a vertical cryostat at BNL. The acceptance criteria that could be tested at BNL were all met by the first four production magnets (MQXFA03-MQXFA06). Subsequently, two magnets (MQXFA07 and MQXFA08) did not meet some of the criteria and were disassembled. Lessons learned during the disassembly of MQXFA07 caused a revision to the assembly specifications that were used for MQXFA10 and subsequent magnets. In this article, we present a summary of: 1) the fabrication and test data for all the MQXFA magnets; 2) the analysis of MQXFA07/A08 test results with characterization of the limiting mechanism; 3) the outcome of the investigation, including the lessons learned during MQXFA07 disassembly; and 4) the finite element analysis correlating observations with test performance.
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- 2023
245. Crosslinguistic Consistency in the Interpretation of Logical Connectives: The case of English, Hungarian, Spanish, and Mandarin Chinese
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Jasbi, Masoud, Bermudez, Natalia, Zhang, Yuhan, Siro, Reka, and Davidson, Kathryn
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Language and thought ,Language Comprehension ,Pragmatics ,Semantics of language ,Logic - Abstract
Languages have constructions that convey the logical concepts of negation, conjunction, and disjunction. These constructions are often logically ambiguous. A disjunction can be exclusive (XOR) or inclusive (IOR), and a negative conjunction/disjunction can be an alternative denial (NAND) or joint denial (NOR). Previous studies have suggested that there is substantial crosslinguistic variation in the interpretation of logical constructions and that languages fall into two groups. The first group including English interprets a negative conjunction as alternative denial (NAND) and a negative disjunction as joint denial (NOR). The second group including Hungarian and Chinese has the opposite interpretation pattern. However, there have been few crosslinguistic studies on the adult interpretation of logical constructions. Using an card selection task, we tested speakers of English, Hungarian, Spanish, and Chinese on different logical constructions. We found that speakers of these languages showed consistency in their interpretations of these constructions in the question environment.
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- 2023
246. Contemporary trends in PGD incidence, outcomes, and therapies
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Cantu, Edward, Diamond, Joshua M, Cevasco, Marisa, Suzuki, Yoshi, Crespo, Maria, Clausen, Emily, Dallara, Laura, Ramon, Christian V, Harmon, Michael T, Bermudez, Christian, Benvenuto, Luke, Anderson, Michaela, Wille, Keith M, Weinacker, Ann, Dhillon, Gundeep S, Orens, Jonathan, Shah, Pali, Merlo, Christian, Lama, Vibha, McDyer, John, Snyder, Laurie, Palmer, Scott, Hartwig, Matt, Hage, Chadi A, Singer, Jonathan, Calfee, Carolyn, Kukreja, Jasleen, Greenland, John R, Ware, Lorraine B, Localio, Russel, Hsu, Jesse, Gallop, Robert, and Christie, Jason D
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Biomedical and Clinical Sciences ,Clinical Sciences ,Organ Transplantation ,Lung ,Transplantation ,Clinical Research ,Good Health and Well Being ,Female ,Pregnancy ,Humans ,Primary Graft Dysfunction ,Incidence ,Preimplantation Diagnosis ,Prospective Studies ,Retrospective Studies ,Lung Transplantation ,primary graft dysfunction ,lung transplantation ,ECMO ,bridge to transplant ,outcomes and lung allocation score ,Cardiorespiratory Medicine and Haematology ,Surgery ,Cardiovascular medicine and haematology ,Clinical sciences - Abstract
BackgroundWe sought to describe trends in extracorporeal membrane oxygenation (ECMO) use, and define the impact on PGD incidence and early mortality in lung transplantation.MethodsPatients were enrolled from August 2011 to June 2018 at 10 transplant centers in the multi-center Lung Transplant Outcomes Group prospective cohort study. PGD was defined as Grade 3 at 48 or 72 hours, based on the 2016 PGD ISHLT guidelines. Logistic regression and survival models were used to contrast between group effects for event (i.e., PGD and Death) and time-to-event (i.e., death, extubation, discharge) outcomes respectively. Both modeling frameworks accommodate the inclusion of potential confounders.ResultsA total of 1,528 subjects were enrolled with a 25.7% incidence of PGD. Annual PGD incidence (14.3%-38.2%, p = .0002), median LAS (38.0-47.7 p = .009) and the use of ECMO salvage for PGD (5.7%-20.9%, p = .007) increased over the course of the study. PGD was associated with increased 1 year mortality (OR 1.7 [95% C.I. 1.2, 2.3], p = .0001). Bridging strategies were not associated with increased mortality compared to non-bridged patients (p = .66); however, salvage ECMO for PGD was significantly associated with increased mortality (OR 1.9 [1.3, 2.7], p = .0007). Restricted mean survival time comparison at 1-year demonstrated 84.1 days lost in venoarterial salvaged recipients with PGD when compared to those without PGD (ratio 1.3 [1.1, 1.5]) and 27.2 days for venovenous with PGD (ratio 1.1 [1.0, 1.4]).ConclusionsPGD incidence continues to rise in modern transplant practice paralleled by significant increases in recipient severity of illness. Bridging strategies have increased but did not affect PGD incidence or mortality. PGD remains highly associated with mortality and is increasingly treated with salvage ECMO.
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- 2022
247. Application of Mobile 3D Data Capture Systems to the Archaeological Documentation of Underground Galleries in the Center of Madrid
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Bermudez González, J. L., primary, Fernández Tapia, E. J., additional, and Castaño Perea, E. M., additional
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- 2024
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248. Lung transplantation for COVID-2019 respiratory failure in the United States: Outcomes 1-year posttransplant and the impact of preoperative extracorporeal membrane oxygenation support
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Bermudez, Christian, Bermudez, Francisca, Courtwright, Andrew, Richards, Thomas, Diamond, Joshua, Cevasco, Marisa, Blumberg, Emily, Christie, Jason, Usman, Asad, and Crespo, Maria M.
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- 2024
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249. Unemployed foreign graduates: job prospects and options – a case analysis in Portugal
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Oliveira-Silva, Carla, Soares-Semedo, Andreia, and Lopez-Bermudez, Beatriz
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- 2024
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250. Sostenibilidad del paisaje cultural cafetero de Colombia, un verdadero reto fiscal desde la perspectiva territorial
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Cesar Augusto Alvarez Bermudez and Cristina Quintero Cortés
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Paisaje cultural ,finanzas públicas ,desarrollo local ,políticas públicas ,desempeño fiscal ,Social Sciences ,Communities. Classes. Races ,HT51-1595 - Abstract
El Paisaje Cultural Cafetero de Colombia (PCCC) fue reconocido en el año 2011 por la Unesco como patrimonio de la humanidad, lo cual ha significado para los municipios involucrados un amplio reconocimiento internacional y una importante responsabilidad en diferentes niveles, debido a que la gestión, protección y sostenibilidad de este valioso patrimonio mundial demanda una serie de recursos humanos, técnicos y económicos que deben ser entregados a través de ejercicios de colaboración y concurrencia entre la nación y las entidades locales. A partir de un enfoque metodológico mixto, el artículo analiza diversos elementos de las finanzas públicas con el fin de dar luces frente a la necesidad de cooperación entre las distintas entidades responsables del PCCC. Para ello, el texto se divide en cuatro componentes: contexto general del PCCC, finanzas públicas de los municipios, análisis de la dependencia fiscal y conclusiones generales.
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- 2024
- Full Text
- View/download PDF
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