740 results on '"Vega, David"'
Search Results
2. Coronary Disease in Emergency Department Chest Pain Patients with Recent Negative Stress Testing
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Walker, Jonathan, Galuska, Michael, and Vega, David
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Chest pain ,cardiac stress test ,Medicine ,Medical emergencies. Critical care. Intensive care. First aid ,RC86-88.9 - Abstract
Background: Cardiac stress tests for diagnosis of coronary artery disease (CAD) are incompletely sensitive and specific.Objective: We examined the frequency of significant CAD in patients presenting to the emergency department (ED) with chest pain who have had a recent negative or inconclusive (
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- 2010
3. Characterization of the potential effects of sub-cycle impedance variations on PRIME v1.4
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González–Ramos, Jon, Angulo, Itziar, Fernández, Igor, Gallarreta, Alexander, de la Vega, David, and Arrinda, Amaia
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- 2024
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4. Combined Sodium-Glucose-Transporters Inhibitors and Glucagon-Like-Peptide Receptor Agonist Compared With Monotherapy Improves Long-Term Survival: A Real-World Registry
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García-Vega, David, Cinza-Sanjurjo, Sergio, Eiras, Sonia, and González-Juanatey, José Ramón
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- 2024
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5. Emissions generated by electric vehicles in the 9-500 kHz band: Characterization, propagation, and interaction
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González-Ramos, Jon, Gallarreta, Alexander, Fernández, Igor, Angulo, Itziar, de la Vega, David, and Arrinda, Amaia
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- 2024
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6. Comparison of conducted emissions due to electric vehicle charging processes under isolated and on-line conditions in the 9–500 kHz frequency range
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González-Ramos, Jon, Gallarreta, Alexander, Fernández, Igor, Angulo, Itziar, de la Vega, David, and Arrinda, Amaia
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- 2024
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7. Electronic and topological analyses of C–O bonds in carbohydrates and lignin-carbohydrate complexes: An atomistic understanding of refractory molecules in agro-industrial waste
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Valencia, Diego, Vega, David, and Aburto, Jorge
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- 2024
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8. Inhibidores del cotransportador 2 de sodio-glucosa, agonistas del receptor de péptido 1 similar al glucagón y mortalidad por cáncer. Registro de la práctica real
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García-Vega, David, Cinza-Sanjurjo, Sergio, Tilves-Bellas, Carlos, Eiras, Sonia, and González-Juanatey, José R.
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- 2024
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9. Sodium-glucose cotransporter-2 inhibitors and glucagon-like peptide 1 receptor agonists and cancer mortality. A real-world registry
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García-Vega, David, Cinza-Sanjurjo, Sergio, Tilves-Bellas, Carlos, Eiras, Sonia, and González-Juanatey, José R.
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- 2024
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10. Association of Psychosocial Risk Factors With Quality of Life and Readmissions 1 Year After LVAD Implantation
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WANG, JEFFREY, OKOH, ALEXIS K., CHEN, YUXUAN, STEINBERG, REBECCA S., GANGAVELLI, APOORVA, PATEL, KRISHAN J., KO, YI-AN, ALEXIS, JEFFREY D., PATEL, SHIVANI A., VEGA, DAVID J., DANESHMAND, MANI, DEFILIPPIS, ERSILIA M., BREATHETT, KHADIJAH, and MORRIS, ALANNA A.
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- 2024
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11. A review on the empirical characterization of the low voltage distribution grid as a communication channel for power line communications
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González-Ramos, Jon, Gallarreta, Alexander, Angulo, Itziar, Fernández, Igor, Arrinda, Amaia, and de la Vega, David
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- 2023
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12. Technique for the comprehensive characterization of supraharmonic disturbances (9–150 kHz) in the joint time-frequency domain
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Gallarreta, Alexander, Fernández, Igor, González-Ramos, Jon, de la Vega, David, Angulo, Itziar, and Arrinda, Amaia
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- 2023
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13. Statistical relationship between RMS and QP spectra of voltage measurements in the 9–150 kHz range
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Gallarreta, Alexander, Fernández, Igor, Ritzmann, Deborah, Lodetti, Stefano, Khokhlov, Victor, de la Vega, David, Wright, Paul, and Meyer, Jan
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- 2023
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14. Efectos del tratamiento médico guiado en pacientes con miocardiopatía inducida por bloqueo de rama izquierda
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García-Rodeja Arias, Federico, Gómez Otero, María Inés, Bouzas Cruz, Noelia, García Vega, David, González Ferrero, Teba, Minguito-Carazo, Carlos, Martínez Monzonís, Amparo, González Juanatey, José Ramón, and Rodríguez-Mañero, Moisés
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- 2023
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15. On the suitability of the CISPR 16 method for measuring conducted emissions in the 2–150kHz range in low voltage grids
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Lodetti, Stefano, Gallarreta, Alexander, Ritzmann, Deborah, Khokhlov, Victor, Wright, Paul, Meyer, Jan, Fernández, Igor, and de la Vega, David
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- 2023
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16. Upgrading Urban Services Through BPL: Practical Applications for Smart Cities
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Uribe-Pérez, Noelia, Fernández, Igor, de la Vega, David, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Nesmachnow, Sergio, editor, and Hernández Callejo, Luis, editor
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- 2022
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17. Extracción de mucílago, evaluación de la actividad antioxidante y el contenido total de fenoles de cuatro variedades de Opuntia ficus-indica
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Valenzuela Zapata, Francisco del Anghel, primary, Treviño Martínez, Luisa Fernanda, additional, Vázquez Alvarado, Rigoberto Eustacio, additional, Paniagua Vega, David, additional, Garza Juárez, Aurora de Jesús, additional, and Silva Flores, Perla Giovanna, additional
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- 2024
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18. System NA Vs. beam NA. How we should change the ray tracing analysis paradigm to enable realistic non-sequential optical system analysis
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Vega, David, primary, Elliott, Erin, additional, Mendes-Lopes, João, additional, Cheng, Han-Hsiang, additional, Chen, Xu, additional, and Croce, Alessandra, additional
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- 2024
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19. Evaluation of the printing strategies design on the mechanical and tribological response of acrylonitrile styrene acrylate (ASA) additive manufacturing parts
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Vázquez Martínez, Juan Manuel, Piñero Vega, David, Salguero, Jorge, and Batista, Moises
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- 2022
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20. An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO
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Rameau, Julien, Follette, Katherine B., Pueyo, Laurent, Marois, Christian, Macintosh, Bruce, Millar-Blanchaer, Maxwell, Wang, Jason J., Vega, David, Doyon, Rene, Lafreniere, David, Nielsen, Eric L., Bailey, Vanessa, Chilcote, Jeffrey K., Close, Laird M., Esposito, Thomas M., Males, Jared R., Metchev, Stanimir, Morzinski, Katie M., Ruffio, Jean-Baptiste, Wolff, Schuyler G., Ammons, S. M., Barman, Travis S., Bulger, Joanna, Cotten, Tara, De Rosa, Robert J., Duchene, Gaspard, Fitzgerald, Michael P., Goodsell, Stephen, Graham, James R., Greenbaum, Alexandra Z., Hibon, Pascale, Hung, Li-Wei, Ingraham, Patrick, Kalas, Paul, Konopacky, Quinn, Larkin, James E., Maire, Jerome, Marchis, Franck, Marley, Mark S., Oppenheimer, Rebecca, Palmer, David, Patience, Jennifer, Perrin, Marshall D., Poyneer, Lisa, Rajan, Abhijith, Rantakyro, Fredrik T., Savransky, Dmitry, Schneider, Adam C., Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Wallace, J. Kent, Ward-Duong, Kimberly, and Wiktorowicz, Sloane
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We present H band spectroscopic and Halpha photometric observations of HD 100546 obtained with GPI and MagAO. We detect H band emission at the location of the protoplanet HD 100546b, but show that choice of data processing parameters strongly affects the morphology of this source. It appears point-like in some aggressive reductions, but rejoins an extended disk structure in the majority of the others. Furthermore, we demonstrate that this emission appears stationary on a timescale of 4.6 yrs, inconsistent at the 2sigma level with a Keplerian clockwise orbit at 59 au in the disk plane. The H band spectrum of the emission is inconsistent with any type of low effective temperature object or accreting protoplanetary disk. It strongly suggests a scattered light origin, as it is consistent with the spectrum of the star and the spectra extracted at other locations in the disk. A non detection at the 5sigma level of HD 100546b in differential Halpha imaging places an upper limit, assuming the protoplanet lies in a gap free of extinction, on the accretion luminosity and accretion rate of 1.7E-4 Lsun and MMdot<6.4E-7Mjup^2/yr for 1Rjup. These limits are comparable to the accretion luminosity and rate of TTauri-stars or LkCa 15b. Taken together, these lines of evidence suggest that the H band source at the location of HD 100546b is not emitted by a planetary photosphere or an accreting circumplanetary disk but is a disk feature enhanced by the PSF subtraction process. This non-detection is consistent with the non-detection in the K band reported in an earlier study but does not exclude the possibility that HD 100546b is deeply embedded., Comment: Accepted to AJ, 10 pages, 6 figures, 1 table
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- 2017
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21. Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO
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Follette, Katherine B., Rameau, Julien, Dong, Ruobing, Pueyo, Laurent, Close, Laird M., Duchene, Gaspard, Fung, Jeffrey, Leonard, Clare, Macintosh, Bruce, Males, Jared R., Marois, Christian, Millar-Blanchaer, Maxwell A., Morzinski, Katie M., Mullen, Wyatt, Perrin, Marshall, Spiro, Elijah, Wang, Jason, Ammons, S. Mark, Bailey, Vanessa P., Barman, Travis, Bulger, Joanna, Chilcote, Jeffrey, Cotten, Tara, De Rosa, Robert J., Doyon, Rene, Fitzgerald, Michael P., Goodsell, Stephen J., Graham, James R., Greenbaum, Alexandra Z., Hibon, Pascale, Hung, Li-Wei, Ingraham, Patrick, Kalas, Paul, Konopacky, Quinn, Larkin, James E., Maire, Jerome, Marchis, Franck, Metchev, Stanimir, Nielsen, Eric L., Oppenheimer, Rebecca, Palmer, David, Patience, Jennifer, Poyneer, Lisa, Rajan, Abhijith, Rantakyro, Fredrik T., Savransky, Dmitry, Schneider, Adam C., Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vega, David, Wallace, J. Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane, and Wolff, Schuyler
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We present optical and near-infrared high contrast images of the transitional disk HD 100546 taken with the Magellan Adaptive Optics system (MagAO) and the Gemini Planet Imager (GPI). GPI data include both polarized intensity and total intensity imagery, and MagAO data are taken in Simultaneous Differential Imaging mode at H{\alpha}. The new GPI H -band total intensity data represent a significant enhancement in sensitivity and field rotation compared to previous data sets and enable a detailed exploration of substructure in the disk. The data are processed with a variety of differential imaging techniques (polarized, angular, reference, and simultaneous differential imaging) in an attempt to identify the disk structures that are most consistent across wavelengths, processing techniques, and algorithmic parameters. The inner disk cavity at 15 au is clearly resolved in multiple datasets, as are a variety of spiral features. While the cavity and spiral structures are identified at levels significantly distinct from the neighboring regions of the disk under several algorithms and with a range of algorithmic parameters, emission at the location of HD 100546 c varies from point-like under aggressive algorithmic parameters to a smooth continuous structure with conservative parameters, and is consistent with disk emission. Features identified in the HD100546 disk bear qualitative similarity to computational models of a moderately inclined two-armed spiral disk, where projection effects and wrapping of the spiral arms around the star result in a number of truncated spiral features in forward-modeled images., Comment: accepted to AJ
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- 2017
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22. Integral Field Spectroscopy of the Low-Mass Companion HD984B with the Gemini Planet Imager
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Johnson-Groh, Mara, Marois, Christian, De Rosa, Robert J., Nielsen, Eric L., Rameau, Julien, Blunt, Sarah, Vargas, Jeffrey, Ammons, S. Mark, Bailey, Vanessa P., Barman, Travis S., Bulger, Joanna, Chilcote, Jeffrey K., Cotten, Tara, Doyon, Rene, Duchene, Gaspard, Fitzgerald, Michael P., Follette, Kate B., Goodsell, Stephen, Graham, James R., Greenbaum, Alexandra Z., Hibon, Pascale, Hung, Li-Wei, Ingraham, Patrick, Kalas, Paul, Konopacky, Quinn M., Larkin, James E., Macintosh, Bruce, Maire, Jerome, Marchis, Franck, Marley, Mark S., Metchev, Stanimir, Millar-Blanchaer, Maxwell A., Oppenheimer, Rebecca, Palmer, David W., Patience, Jenny, Perrin, Marshall, Poyneer, Lisa A., Pueyo, Laurent, Rajan, Abhijith, Rantakyro, Fredrik T., Savransky, Dmitry, Schneider, Adam C., Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vega, David, Wallace, J. Kent, Wang, Jason J., Ward-Duong, Kimberly, Wiktorowicz, Sloane J., and Wolff, Schuyler G.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the Gemini Planet Imager Exoplanet Survey campaign. Images of HD 984 B were obtained in the J (1.12--1.3 micron) and H (1.50--1.80 micron) bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 AU (70 year) orbit with a 68% confidence interval between 14 and 28 AU, an eccentricity of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119 degrees with a 68% confidence interval between 114 degrees and 125 degrees. To address considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare to known spectral types using field brown dwarf and low-mass star spectra and find a best fit match of a field gravity M6.5+/-1.5 spectral type with a corresponding temperature of 2730+120 K. Photometry of the companion yields a luminosity of log(L_bol/L_sun) = -2.88+/-0.07 dex, using DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34+/-1 to 95+/-4 M_Jup. These results are consistent with previous measurements of the object., Comment: Accepted for publication in The Astronomical Journal
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- 2017
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23. Enhancing patient outcomes: Integrating electronic cardiology consultation in primary care for cancer patients.
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Cinza‐Sanjurjo, Sergio, Mazón‐Ramos, Pilar, Rey‐Aldana, Daniel, Garcia‐Vega, David, Portela‐Romero, Manuel, Rodríguez‐Mañero, Moisés, Sestayo‐Fernández, Manuela, Lage‐Fernández, Ricardo, López‐López, Rafael, and González‐Juanatey, José R.
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CANCER patients ,CARDIOLOGY ,ELECTRONIC health records ,CANCER prognosis ,CANCER patient care ,OUTPATIENT medical care - Abstract
Background: The prevalence of cancer patients with concomitant cardiovascular (CV) disease is on the rise due to improved cancer prognoses. The aim of this study is to evaluate the long‐term outcomes of cancer patients referred to a cardiology department (CD) via primary care using e‐consultation. Methods: We analysed data from cancer patients with prior referrals to a CD between 2010 and 2021 (n = 6889) and compared two care models: traditional in‐person consultations and e‐consultations. In e‐consultation model, cardiologists reviewed electronic health records (e‐consultation) to determine whether the demand could be addressed remotely or necessitated an in‐person consultation. We used an interrupted time series regression model to assess outcomes during the two periods: (1) time to cardiology consultation, (2) rates of all‐cause and CV related hospital admissions and (3) rates of all‐cause and CV‐related mortality within the first year after the initial consultation or e‐consultation at the CD. Results: Introduction of e‐consultation for cancer patients referred to cardiology care led to a 51.8% reduction (95%CI: 51.7%–51.9%) in waiting times. Furthermore, we observed decreased 1‐year incidence rates, with incidence rate ratios (iRRs) [IC95%] of.75 [.73–.77] for CV‐related hospitalizations,.43 [.42–.44] for all‐cause hospitalizations, and.87 [.86–.88] for all‐cause mortality. Conclusions: Compared to traditional in‐person consultations, an outpatient care program incorporating e‐consultation for cancer patients significantly reduced waiting times for cardiology care and demonstrated safety, associated with lower rates of hospital admissions. [ABSTRACT FROM AUTHOR]
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- 2024
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24. The Global Orchid Market
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Yuan, Shih-Chang, Lekawatana, Setapong, Amore, Teresita D., Chen, Fure-Chyi, Chin, Shih-Wen, Vega, David Monge, Wang, Yin-Tung, Kole, Chittaranjan, Series Editor, Chen, Fure-Chyi, editor, and Chin, Shih-Wen, editor
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- 2021
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25. This Article Corrects: "Coronary Disease in Emergency Department Chest Pain Patients with Recent Negative Stress Testing"
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Walker, Jonathan, Galuska, Michael, and Vega, David
- Abstract
Background: Cardiac stress tests for diagnosis of coronary artery disease (CAD) are incompletely sensitive and specific.Objective: We examined the frequency of significant CAD in patients presenting to the emergency department (ED) with chest pain who have had a recent negative or inconclusive (
- Published
- 2018
26. SISTEMA PARA LA IDENTIFICACIÓN DE GLÚCOSIDOS DE ESTEVIOL EN UN CULTIVO DE RAÍCES DE Stevia rebaudiana
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Vega, David Paniagua, primary, Huerta-Heredia, Ariana Arleney, additional, Alvarado-Orea, Itzel Vianney, additional, and Cavazos-Rocha, Norma Cecilia, additional
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- 2022
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27. Outcomes of COVID-19 in patients with primary systemic vasculitis or polymyalgia rheumatica from the COVID-19 Global Rheumatology Alliance physician registry: a retrospective cohort study
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Dahou, Brahim, Rath, Eva, Piette, Yves, Devinck, Mieke, Maeyaert, Bea, Machado Ribeiro, Francinne, Euzebio Ribeiro, Sandra Lucia, Pinheiro, Marcelo, Quintana, Rosana, Gómez, Gimena, Roberts, Karen, Baez, Roberto Miguel, Castro Coello, Vanessa, Haye Salinas, María J., Maldonado, Federico Nicolas, Reyes Torres, Alvaro Andres, Alle, Gelsomina, Tanten, Romina, Maldonado Ficco, Hernán, Nieto, Romina, Gobbi, Carla, Tissera, Yohana, Pisoni, Cecilia, Paula, Alba, Albiero, Juan Alejandro, Schmid, Maria Marcela, Cosatti, Micaela, Gamba, Maria Julieta, Leandro, Carlevaris, Cusa, María Alejandra, German, Noelia, Bellomio, Veronica, Takashima, Lorena, Pera, Mariana, Cogo, Karina, Gálvez Elkin, Maria Soledad, Medina, María Alejandra, Savio, Veronica, Rojas Tessel, Ivana Romina, Perez Alamino, Rodolfo, Werner, Marina Laura, Ornella, Sofía, Casalla, Luciana, de la Vega, Maria, Severina, María, García, Mercedes, Gonzalez Lucero, Luciana, Romeo, Cecilia, Moyano, Sebastián, Barbich, Tatiana, Bertoli, Ana, Baños, Andrea, Petruzzelli, Sandra, Matellan, Carla, Conti, Silvana, Lazaro, Ma. Alicia, Rodriguez Gil, Gustavo Fabián, Risueño, Fabian, Quaglia, Maria Isabel, Scafati, Julia, Cuchiaro, Natalia Lili, Rebak, Jonathan Eliseo, Pineda, Susana Isabel, Calvo, María Elena, Picco, Eugenia, Gallino Yanzi, Josefina, Maid, Pablo, Guaglianone, Debora, Morbiducci, Julieta Silvana, Porta, Sabrina, Herscovich, Natalia, Velasco Zamora, José Luis, Kisluk, Boris, Castaños Menescardi, Maria Sol, Gallo, Rosana, Martire, María Victoria, Maldini, Carla, Goizueta, Cecilia, de la Vega Fernandez, Sabrina Solange, Aeschlimann, Carolina, Subils, Gisela, Ibáñez, Sebastián, Chassin-Trubert, Anne-Marie, Dong, Lingli, Cajas, Lui, Barešic, Marko, Anic, Branimir, Culo, Melanie-Ivana, Pavelic, Tea Ahel, Kovacevic Stranski, Kristina, Karanovic, Boris, Vencovsky, Jiri, Píchová, Marta, Filkova, Maria, Hamoud, Hesham, Vassilopoulos, Dimitrios, Guzman Melgar, Gabriela Maria, So, Ho, Király, Márta, Vojdanian, Mahdi, Balbir-Gurman, Alexandra, Abutiban, Fatemah, Zepa, Julija, Bulina, Inita, Bukauskiene, Loreta, Zaueta, Beatriz, Castillo Ortiz, Angel Alejandro, Zamora Tehozol, Erick, Vega, David, Cervántes Rosete, Diana, Martín Nares, Eduardo, Rodriguez-Reyna, Tatiana Sofia, Rull Gabayet, Marina, Alpízar-Rodríguez, Deshiré, Irazoque, Fedra, Jimenez, Xochitl, Geurts-van Bon, Lenny, Zijlstra, Theo, Hoekstra, Monique, Al-Adhoubi, Nasra, Salim, Babur, Giraldo, Enrique, Salinas, Ariel, Ugarte-Gil, Manuel, Nowakowski, Jaroslaw, Al-Emadi, Samar, Conway, Richard, Flood, Rachael, McCarthy, Geraldine, Felea, Ioana, Filipescu, Ileana, Rednic, Simona, Groseanu, Laura, Tamas, Maria Magdelena, Mlynarikova, Vanda, Skamlova, Martina, Zlnay, Martin, Miceková, Dagmar, Capova, Lubica, Macejova, Zelmira, Štenová, Emoke, Raffayova, Helena, Belakova, Gabriela, Strakova, Eva, Sencarová, Marieta, Žlnayová, Sona, Anna Sabová, Anna, Spisakova, Daniela, Oetterová, Mária, Lukacova, Olga, Bakosova, Martina, Hocevar, Alojzija, de la Torre-Rubio, Natalia, Alegre Sancho, Juan José, Corteguera Coro, Montserrat, Cobeta Garcia, Juan Carlos, Torres Martin, Maria Carmen, Campos, Jose, Gomez Puerta, Jose A, Yardimci, Gozd Kubra, Akar, Servet, Icacan, Ozan Cemal, Çelik, Selda, Vasylets, Viktoriia, Yeoh, Su-Ann, Vandevelde, Claire, Dunt, Sasha, Leeder, Jane, Macphie, Elizabeth, Salerno, Rosaria, Graver, Christine, Williams, Katie, O'Reilly, Sheila, Devine, Kirsty, Tyler, Jennifer, Warner, Elizabeth, Pilcher, James, Patel, Samir, Nikiphorou, Elena, Chadwick, Laura, Jones, Caroline Mulvaney, Harrison, Beverley, Thornton, Lucy, O'Kane, Diana, Fusi, Lucia, Low, Audrey, Horton, Sarah, Jatwani, Shraddha, Baig, Sara, Bajwa, Hammad, Berglund, Vernon, Dahle, Angela, Dorman, Walter, Hargrove, Jody, Hilton, Maren, Lebedoff, Nicholas, Leonard, Susan, Morgan, Jennifer, Pfeifer, Emily, Skemp, Archibald, Wilson, Jeffrey, Wolff, Anne, Cepeda, Eduardo, D'Silva, Kristin, Hsu, Tiffany, Patel, Naomi, Sparks, Jeffrey, Todd, Derrick, Wallace, Zachary, Hare, Denise, Calabrese, Cassandra, Adams, Christopher, Khosroshahi, Arezou, Kilian, Adam, White, Douglas, Winter, Melanie, Fields, Theodore, Siegel, Caroline, Daver, Nicole, Harvey, Melissa, Kramer, Neil, Lamore, Concetta, Hogarty, Suneya, Yeter, Karen, Wise, Leanna, Siddique, Faizah, Ban, Byung, Tanner, Tamar, Ruderman, Eric, Davis, William, Quinet, Robert, Scopelitis, Evangeline, Toribio Toribio, Karen, Webb-Detiege, Tameka, Zakem, Jerald, Abbass, Khurram, Kepecs, Gilbert, Miranda, Lilliam, Guma, Michael, Haikal, Ammar, Mody, Sushama, Mueller, Daric, Jayatilleke, Arundathi, Zell, JoAnn, Bays, Alison, Dao, Kathryn, Fatemeh, Ezzati, Parks, Deborah, Karp, David, Quiceno, Guillermo, Sattui, Sebastian E, Putman, Michael S, Seet, Andrea M, Gianfrancesco, Milena A, Beins, Kaley, Hill, Catherine, Liew, David, Mackie, Sarah L, Mehta, Puja, Neill, Lorna, Gomez, Gimena, Salinas, Maria Isabel Haye, Mariz, Henrique Ataide, de Sousa Studart, Samia Araujo, Araujo, Nafice Costa, Knight, Ann, Rozza, Davide, Quartuccio, Luca, Samson, Maxime, Bally, Stéphane, Maria, Alexandre TJ, Chazerain, Pascal, Hasseli, Rebecca, Müller-Ladner, Ulf, Hoyer, Bimba F, Voll, Reinhard, Torres, Rita Pinheiro, Luis, Mariana, Ribeirio, Sandra Lucia Euzebio, Sparks, Jeffrey A, Hsu, Tiffany Y-T, D’Silva, Kristin M, Patel, Naomi J, Gilbert, Emily, Almada, Maria Valenzuela, Duarte-García, Alí, Jacobsohn, Lindsay, Izadi, Zara, Strangfeld, Anja, Mateus, Elsa F, Hyrich, Kimme L, Gossec, Laure, Carmona, Loreto, Lawson-Tovey, Saskia, Kearsley-Fleet, Lianne, Schaefer, Martin, Sirotich, Emily, Hausmann, Jonathan S, Sufka, Paul, Bhana, Suleman, Liew, Jean W, Grainger, Rebecca, Machado, Pedro M, Wallace, Zachary S, Yazdany, Jinoos, and Robinson, Philip C
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- 2021
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28. Optical fluids: modeling the near field and far field optical effects of atmosphere and turbulent flow of an airborne laser communication system or imaging system.
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Lacava, Steven, primary, Mercado, Felipe, additional, Vega, David, additional, Mendes Lopes, Joao, additional, Carbajal, Esteban, additional, Kamel, Mohammed, additional, Viti, Valerio, additional, Miller, Craig, additional, Schwarz, Walter, additional, Herringer, Nick, additional, and Elliott, Erin, additional
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- 2024
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29. Beyond the Positivity Bias: The Processing and Integration of Self-relevant Feedback is Driven by its Alignment with Pre-Existing Self-Views
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Garcia, Josue, primary, Friedrich, Solenn, additional, Wu, Xiongbo, additional, Vega, David Cucurell, additional, and Fuentemilla, Lluís, additional
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- 2024
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30. Imaging an 80 AU Radius Dust Ring Around the F5V Star HD 157587
- Author
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Millar-Blanchaer, Maxwell A., Wang, Jason, Kalas, Paul, Graham, James R., Duchene, Gaspard, Nielsen, Eric L., Perrin, Marshall, Moon, Dae-Sik, Padgett, Deborah, Metchev, Stanimir, Ammons, S. Mark, Bailey, Vanessa P., Barman, Travis, Bruzzone, Sebastian, Bulger, Joanna, Chen, Christine H., Chilcote, Jeffrey, Cotten, Tara, De Rosa, Robert J., Doyon, Rene, Draper, Zachary H., Esposito, Thomas M., Fitzgerald, Michael P., Follette, Katherine B., Gerard, Benjamin L., Greenbaum, Alexandra Z., Hibon, Pascale, Hinkley, Sasha, Hung, Li-Wei, Ingraham, Patrick, Johnson-Groh, Mara, Konopacky, Quinn, Larkin, James E., Macintosh, Bruce, Maire, Jerome, Marchis, Franck, Marley, Mark S., Marois, Christian, Matthews, Brenda C., Oppenheimer, Rebecca, Palmer, David, Patience, Jennifer, Poyneer, Lisa, Pueyo, Laurent, Rajan, Abhijith, Rameau, Julien, Rantakyro, Fredrik T., Savransky, Dmitry, Schneider, Adam C., Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vega, David, Wallace, J. Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane, and Wolff, Schuyler
- Subjects
Astrophysics - Earth and Planetary Astrophysics - Abstract
We present $H$-band near-infrared polarimetric imaging observations of the F5V star HD~157587 obtained with the Gemini Planet Imager (GPI) that reveal the debris disk as a bright ring structure at a separation of $\sim$80$-$100~AU. The new GPI data complement recent HST/STIS observations that show the disk extending out to over 500~AU. The GPI image displays a strong asymmetry along the projected minor axis as well as a fainter asymmetry along the projected major axis. We associate the minor and major axis asymmetries with polarized forward scattering and a possible stellocentric offset, respectively. To constrain the disk geometry we fit two separate disk models to the polarized image, each using a different scattering phase function. Both models favor a disk inclination of $\sim 70\degr$ and a $1.5\pm0.6$ AU stellar offset in the plane of the sky along the projected major axis of the disk. We find that the stellar offset in the disk plane, perpendicular to the projected major axis is degenerate with the form of the scattering phase function and remains poorly constrained. The disk is not recovered in total intensity due in part to strong adaptive optics residuals, but we recover three point sources. Considering the system's proximity to the galactic plane and the point sources' positions relative to the disk, we consider it likely that they are background objects and unrelated to the disk's offset from the star., Comment: Updated with proper references
- Published
- 2016
- Full Text
- View/download PDF
31. The Orbit and Transit Prospects for $\beta$ Pictoris b constrained with One Milliarcsecond Astrometry
- Author
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Wang, Jason J., Graham, James R., Pueyo, Laurent, Kalas, Paul, Millar-Blanchaer, Maxwell A., Ruffio, Jean-Baptiste, De Rosa, Robert J., Ammons, S. Mark, Arriaga, Pauline, Bailey, Vanessa P., Barman, Travis S., Bulger, Joanna, Burrows, Adam S., Cardwell, Andrew, Chen, Christine H., Chilcote, Jeffrey K., Cotten, Tara, Fitzgerald, Michael P., Follette, Katherine B., Doyon, René, Duchêne, Gaspard, Greenbaum, Alexandra Z., Hibon, Pascale, Hung, Li-Wei, Ingraham, Patrick, Konopacky, Quinn M., Larkin, James E., Macintosh, Bruce, Maire, Jérôme, Marchis, Franck, Marley, Mark S., Marois, Christian, Metchev, Stanimir, Nielsen, Eric L., Oppenheimer, Rebecca, Palmer, David W., Patel, Rahul, Patience, Jenny, Perrin, Marshall D., Poyneer, Lisa A., Rajan, Abhijith, Rameau, Julien, Rantakyrö, Fredrik T., Savransky, Dmitry, Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vasisht, Gautam, Vega, David, Wallace, J. Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane J., and Wolff, Schuyler G.
- Subjects
Astrophysics - Earth and Planetary Astrophysics - Abstract
A principal scientific goal of the Gemini Planet Imager (GPI) is obtaining milliarcsecond astrometry to constrain exoplanet orbits. However, astrometry of directly imaged exoplanets is subject to biases, systematic errors, and speckle noise. Here we describe an analytical procedure to forward model the signal of an exoplanet that accounts for both the observing strategy (angular and spectral differential imaging) and the data reduction method (Karhunen-Lo\`eve Image Projection algorithm). We use this forward model to measure the position of an exoplanet in a Bayesian framework employing Gaussian processes and Markov chain Monte Carlo (MCMC) to account for correlated noise. In the case of GPI data on $\beta$ Pic b, this technique, which we call Bayesian KLIP-FM Astrometry (BKA), outperforms previous techniques and yields 1$\sigma$-errors at or below the one milliarcsecond level. We validate BKA by fitting a Keplerian orbit to twelve GPI observations along with previous astrometry from other instruments. The statistical properties of the residuals confirm that BKA is accurate and correctly estimates astrometric errors. Our constraints on the orbit of $\beta$ Pic b firmly rule out the possibility of a transit of the planet at 10-$\sigma$ significance. However, we confirm that the Hill sphere of $\beta$ Pic b will transit, giving us a rare chance to probe the circumplanetary environment of a young, evolving exoplanet. We provide an ephemeris for photometric monitoring of the Hill sphere transit event, which will begin at the start of April in 2017 and finish at the end of January in 2018., Comment: 18 pages, 7 figures. Accepted to AJ. v2 corrects an error in plotting the full size of the Hill sphere in Figure 6
- Published
- 2016
- Full Text
- View/download PDF
32. Bringing 'The Moth' to Light: A Planet-Sculpting Scenario for the HD 61005 Debris Disk
- Author
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Esposito, Thomas M., Fitzgerald, Michael P., Graham, James R., Kalas, Paul, Lee, Eve J., Chiang, Eugene, Duchene, Gaspard, Wang, Jason, Millar-Blanchaer, Maxwell A., Nielsen, Eric, Ammons, S. Mark, Bruzzone, Sebastian, De Rosa, Robert J., Draper, Zachary H., Macintosh, Bruce, Marchis, Franck, Metchev, Stanimir A., Perrin, Marshall, Pueyo, Laurent, Rajan, Abhijith, Rantakyro, Fredrik T., Vega, David, and Wolff, Schuyler
- Subjects
Astrophysics - Earth and Planetary Astrophysics - Abstract
The HD 61005 debris disk ("The Moth") stands out from the growing collection of spatially resolved circumstellar disks by virtue of its unusual swept-back morphology, brightness asymmetries, and dust ring offset. Despite several suggestions for the physical mechanisms creating these features, no definitive answer has been found. In this work, we demonstrate the plausibility of a scenario in which the disk material is shaped dynamically by an eccentric, inclined planet. We present new Keck NIRC2 scattered-light angular differential imaging of the disk at 1.2-2.3 microns that further constrains its outer morphology (projected separations of 27-135 AU). We also present complementary Gemini Planet Imager 1.6 micron total intensity and polarized light detections that probe down to projected separations less than 10 AU. To test our planet-sculpting hypothesis, we employed secular perturbation theory to construct parent body and dust distributions that informed scattered-light models. We found that this method produced models with morphological and photometric features similar to those seen in the data, supporting the premise of a planet-perturbed disk. Briefly, our results indicate a disk parent body population with a semimajor axis of 40-52 AU and an interior planet with an eccentricity of at least 0.2. Many permutations of planet mass and semimajor axis are allowed, ranging from an Earth mass at 35 AU to a Jupiter mass at 5 AU., Comment: Accepted to AJ; added Figure 5 and minor text edits
- Published
- 2016
- Full Text
- View/download PDF
33. The Peculiar Debris Disk of HD 111520 as Resolved by the Gemini Planet Imager
- Author
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Draper, Zachary H., Duchêne, Gaspard, Millar-Blanchaer, Maxwell A., Matthews, Brenda C., Wang, Jason J., Kalas, Paul, Graham, James R., Padgett, Deborah, Ammons, S. Mark, Bulger, Joanna, Chen, Christine, Chilcote, Jeffrey K., Doyon, René, Fitzgerald, Michael P., Follette, Kate B., Gerard, Benjamin, Greenbaum, Alexandra Z., Hibon, Pascale, Hinkley, Sasha, Macintosh, Bruce, Ingraham, Patrick, Lafrenière, David, Marchis, Franck, Marois, Christian, Nielsen, Eric L., Oppenheimer, Rebecca, Patel, Rahul, Patience, Jenny, Perrin, Marshall, Pueyo, Laurent, Rajan, Abhijith, Rameau, Julian, Sivaramakrishnan, Anand, Vega, David, Ward-Duong, Kimberly, and Wolff, Schuyler G.
- Subjects
Astrophysics - Earth and Planetary Astrophysics - Abstract
Using the Gemini Planet Imager (GPI), we have resolved the circumstellar debris disk around HD 111520 at a projected range of ~30-100 AU in both total and polarized $H$-band intensity. The disk is seen edge-on at a position angle of ~165$^{\circ}$ along the spine of emission. A slight inclination or asymmetric warping are covariant and alters the interpretation of the observed disk emission. We employ 3 point spread function (PSF) subtraction methods to reduce the stellar glare and instrumental artifacts to confirm that there is a roughly 2:1 brightness asymmetry between the NW and SE extension. This specific feature makes HD 111520 the most extreme examples of asymmetric debris disks observed in scattered light among similar highly inclined systems, such as HD 15115 and HD 106906. We further identify a tentative localized brightness enhancement and scale height enhancement associated with the disk at ~40 AU away from the star on the SE extension. We also find that the fractional polarization rises from 10 to 40% from 0.5" to 0.8" from the star. The combination of large brightness asymmetry and symmetric polarization fraction leads us to believe that an azimuthal dust density variation is causing the observed asymmetry., Comment: 9 pages, 8 Figures, 1 table, Accepted to ApJ
- Published
- 2016
- Full Text
- View/download PDF
34. Upgrading Urban Services Through BPL: Practical Applications for Smart Cities
- Author
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Uribe-Pérez, Noelia, primary, Fernández, Igor, additional, and de la Vega, David, additional
- Published
- 2022
- Full Text
- View/download PDF
35. Robust maximum power point tracking scheme for PV systems based on attractive ellipsoid method
- Author
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Cortes-Vega, David and Alazki, Hussain
- Published
- 2021
- Full Text
- View/download PDF
36. Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO
- Author
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Follette, Katherine B, Rameau, Julien, Dong, Ruobing, Pueyo, Laurent, Close, Laird M, Duchêne, Gaspard, Fung, Jeffrey, Leonard, Clare, Macintosh, Bruce, Males, Jared R, Marois, Christian, Millar-Blanchaer, Maxwell A, Morzinski, Katie M, Mullen, Wyatt, Perrin, Marshall, Spiro, Elijah, Wang, Jason, Ammons, S Mark, Bailey, Vanessa P, Barman, Travis, Bulger, Joanna, Chilcote, Jeffrey, Cotten, Tara, De Rosa, Robert J, Doyon, Rene, Fitzgerald, Michael P, Goodsell, Stephen J, Graham, James R, Greenbaum, Alexandra Z, Hibon, Pascale, Hung, Li-Wei, Ingraham, Patrick, Kalas, Paul, Konopacky, Quinn, Larkin, James E, Maire, Jérôme, Marchis, Franck, Metchev, Stanimir, Nielsen, Eric L, Oppenheimer, Rebecca, Palmer, David, Patience, Jennifer, Poyneer, Lisa, Rajan, Abhijith, Rantakyrö, Fredrik T, Savransky, Dmitry, Schneider, Adam C, Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vega, David, Wallace, J Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane, and Wolff, Schuyler
- Subjects
instrumentation: adaptive optics ,planet-disk interaction ,protoplanetary disk ,stars: individual ,astro-ph.EP ,Astronomical and Space Sciences ,Astronomy & Astrophysics - Abstract
We present optical and near-infrared high-contrast images of the transitional disk HD 100546 taken with the Magellan Adaptive Optics system (MagAO) and the Gemini Planet Imager (GPI). GPI data include both polarized intensity and total intensity imagery, and MagAO data are taken in Simultaneous Differential Imaging mode at Hα. The new GPI H-band total intensity data represent a significant enhancement in sensitivity and field rotation compared to previous data sets and enable a detailed exploration of substructure in the disk. The data are processed with a variety of differential imaging techniques (polarized, angular, reference, and simultaneous differential imaging) in an attempt to identify the disk structures that are most consistent across wavelengths, processing techniques, and algorithmic parameters. The inner disk cavity at 15 au is clearly resolved in multiple data sets, as are a variety of spiral features. While the cavity and spiral structures are identified at levels significantly distinct from the neighboring regions of the disk under several algorithms and with a range of algorithmic parameters, emission at the location of HD 100546 "c" varies from point-like under aggressive algorithmic parameters to a smooth continuous structure with conservative parameters, and is consistent with disk emission. Features identified in the HD 100546 disk bear qualitative similarity to computational models of a moderately inclined two-armed spiral disk, where projection effects and wrapping of the spiral arms around the star result in a number of truncated spiral features in forward-modeled images.
- Published
- 2017
37. Integral Field Spectroscopy of the Low-mass Companion HD 984 B with the Gemini Planet Imager
- Author
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Johnson-Groh, Mara, Marois, Christian, De Rosa, Robert J, Nielsen, Eric L, Rameau, Julien, Blunt, Sarah, Vargas, Jeffrey, Ammons, S Mark, Bailey, Vanessa P, Barman, Travis S, Bulger, Joanna, Chilcote, Jeffrey K, Cotten, Tara, Doyon, Rene, Duchene, Gaspard, Fitzgerald, Michael P, Follette, Kate B, Goodsell, Stephen, Graham, James R, Greenbaum, Alexandra Z, Hibon, Pascale, Hung, Li-Wei, Ingraham, Patrick, Kalas, Paul, Konopacky, Quinn M, Larkin, James E, Macintosh, Bruce, Maire, Jerome, Marchis, Franck, Marley, Mark S, Metchev, Stanimir, Millar-Blanchaer, Maxwell A, Oppenheimer, Rebecca, Palmer, David W, Patience, Jenny, Perrin, Marshall, Poyneer, Lisa A, Pueyo, Laurent, Rajan, Abhijith, Rantakyroe, Fredrik T, Savransky, Dmitry, Schneider, Adam C, Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vega, David, Wallace, J Kent, Wang, Jason J, Ward-Duong, Kimberly, Wiktorowicz, Sloane J, and Wolff, Schuyler G
- Subjects
planetary systems ,stars: individual ,Astronomy & Astrophysics ,Astronomical and Space Sciences - Published
- 2017
38. IMAGING AN 80 au RADIUS DUST RING AROUND THE F5V STAR HD 157587
- Author
-
Millar-Blanchaer, Maxwell A, Wang, Jason J, Kalas, Paul, Graham, James R, Duchêne, Gaspard, Nielsen, Eric L, Perrin, Marshall, Moon, Dae-Sik, Padgett, Deborah, Metchev, Stanimir, Ammons, S Mark, Bailey, Vanessa P, Barman, Travis, Bruzzone, Sebastian, Bulger, Joanna, Chen, Christine H, Chilcote, Jeffrey, Cotten, Tara, De Rosa, Robert J, Doyon, Rene, Draper, Zachary H, Esposito, Thomas M, Fitzgerald, Michael P, Follette, Katherine B, Gerard, Benjamin L, Greenbaum, Alexandra Z, Hibon, Pascale, Hinkley, Sasha, Hung, Li-Wei, Ingraham, Patrick, Johnson-Groh, Mara, Konopacky, Quinn, Larkin, James E, Macintosh, Bruce, Maire, Jérôme, Marchis, Franck, Marley, Mark S, Marois, Christian, Matthews, Brenda C, Oppenheimer, Rebecca, Palmer, David, Patience, Jennifer, Poyneer, Lisa, Pueyo, Laurent, Rajan, Abhijith, Rameau, Julien, Rantakyrö, Fredrik T, Savransky, Dmitry, Schneider, Adam C, Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vega, David, Wallace, J Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane, and Wolff, Schuyler
- Subjects
planet-disk interactions ,stars: individual ,techniques: polarimetric ,astro-ph.EP ,Astronomical and Space Sciences ,Astronomy & Astrophysics - Abstract
We present H-band near-infrared polarimetric imaging observations of the F5V star HD 157587 obtained with the Gemini Planet Imager (GPI) that reveal the debris disk as a bright ring structure at a separation of ∼80-100 au. The new GPI data complement recent Hubble Space Telescope/STIS observations that show the disk extending out to over 500 au. The GPI image displays a strong asymmetry along the projected minor axis as well as a fainter asymmetry along the projected major axis. We associate the minor and major axis asymmetries with polarized forward scattering and a possible stellocentric offset, respectively. To constrain the disk geometry, we fit two separate disk models to the polarized image, each using a different scattering phase function. Both models favor a disk inclination of ∼70° and a 1.5 ± 0.6 au stellar offset in the plane of the sky along the projected major axis of the disk. We find that the stellar offset in the disk plane, perpendicular to the projected major axis is degenerate with the form of the scattering phase function and remains poorly constrained. The disk is not recovered in total intensity due in part to strong adaptive optics residuals, but we recover three point sources. Considering the system's proximity to the galactic plane and the point sources' positions relative to the disk, we consider it likely that they are background objects and unrelated to the disk's offset from the star.
- Published
- 2016
39. Enhancing patient outcomes: Integrating electronic cardiology consultation in primary care for cancer patients
- Author
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Universidade de Santiago de Compostela. Centro de Investigación en Medicina Molecular e Enfermidades Crónicas, Universidade de Santiago de Compostela. Departamento de Bioquímica e Bioloxía Molecular, Universidade de Santiago de Compostela. Departamento de Psiquiatría, Radioloxía, Saúde Pública, Enfermaría e Medicina, González‐Juanatey, José R., Cinza Sanjurjo, Sergio, Mazón Ramos, Pilar, Rey Aldana, Daniel, Garcia Vega, David, Portela Romero, Manuel, Rodríguez Mañero, Moisés, Sestayo Fernández, Manuela, Lage Fernández, Ricardo, López López, Rafael, González Juanatey, José Ramón, Universidade de Santiago de Compostela. Centro de Investigación en Medicina Molecular e Enfermidades Crónicas, Universidade de Santiago de Compostela. Departamento de Bioquímica e Bioloxía Molecular, Universidade de Santiago de Compostela. Departamento de Psiquiatría, Radioloxía, Saúde Pública, Enfermaría e Medicina, González‐Juanatey, José R., Cinza Sanjurjo, Sergio, Mazón Ramos, Pilar, Rey Aldana, Daniel, Garcia Vega, David, Portela Romero, Manuel, Rodríguez Mañero, Moisés, Sestayo Fernández, Manuela, Lage Fernández, Ricardo, López López, Rafael, and González Juanatey, José Ramón
- Abstract
Background: The prevalence of cancer patients with concomitant cardiovascular (CV) disease is on the rise due to improved cancer prognoses. The aim of this study is to evaluate the long-term outcomes of cancer patients referred to a cardiology department (CD) via primary care using e-consultation. Methods: We analysed data from cancer patients with prior referrals to a CD between 2010 and 2021 (n = 6889) and compared two care models: traditional in-person consultations and e-consultations. In e-consultation model, cardiologists reviewed electronic health records (e-consultation) to determine whether the demand could be addressed remotely or necessitated an in-person consultation. We used an interrupted time series regression model to assess outcomes during the two periods: (1) time to cardiology consultation, (2) rates of all-cause and CV related hospital admissions and (3) rates of all-cause and CV-related mortality within the first year after the initial consultation or e-consultation at the CD. Results: Introduction of e-consultation for cancer patients referred to cardiology care led to a 51.8% reduction (95%CI: 51.7%–51.9%) in waiting times. Furthermore, we observed decreased 1-year incidence rates, with incidence rate ratios (iRRs) [IC95%] of .75 [.73–.77] for CV-related hospitalizations, .43 [.42–.44] for all-cause hospitalizations, and .87 [.86–.88] for all-cause mortality. Conclusions: Compared to traditional in-person consultations, an outpatient care program incorporating e-consultation for cancer patients significantly reduced waiting times for cardiology care and demonstrated safety, associated with lower rates of hospital admissions
- Published
- 2024
40. $\beta$ Pictoris' inner disk in polarized light and new orbital parameters for $\beta$ Pictoris b
- Author
-
Millar-Blanchaer, Maxwell A., Graham, James R., Pueyo, Laurent, Kalas, Paul, Dawson, Rebekah I., Wang, Jason, Perrin, Marshall, Moon, Dae-Sik, Macintosh, Bruce, Ammons, S. Mark, Barman, Travis, Cardwell, Andrew, Chen, Christine H., Chiang, Eugene, Chilcote, Jeffrey, Cotten, Tara, De Rosa, Robert J., Draper, Zachary H., Dunn, Jennifer, Duchêne, Gaspard, Esposito, Thomas M., Fitzgerald, Michael P., Follette, Katherine B., Goodsell, Stephen J., Greenbaum, Alexandra Z., Hartung, Markus, Hibon, Pascale, Hinkley, Sasha, Ingraham, Patrick, Jensen-Clem, Rebecca, Konopacky, Quinn, Larkin, James E., Long, Douglas, Maire, Jérôme, Marchis, Franck, Marley, Mark S., Marois, Christian, Morzinski, Katie M., Nielsen, Eric L., Palmer, David W., Oppenheimer, Rebecca, Poyneer, Lisa, Rajan, Abhijith, Rantakyrö, Fredrik T., Ruffio, Jean-Baptiste, Sadakuni, Naru, Saddlemyer, Leslie, Schneider, Adam C., Sivaramakrishnan, Anand, Soummer, Remi, Thomas, Sandrine, Vasisht, Gautam, Vega, David, Wallace, J. Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane J., and Wolff, Schuyler G.
- Subjects
Astrophysics - Earth and Planetary Astrophysics - Abstract
We present $H$-band observations of $\beta$ Pic with the Gemini Planet Imager's (GPI's) polarimetry mode that reveal the debris disk between ~0.3" (~6 AU) and ~1.7" (~33 AU), while simultaneously detecting $\beta$ Pic $b$. The polarized disk image was fit with a dust density model combined with a Henyey-Greenstein scattering phase function. The best fit model indicates a disk inclined to the line of sight ($\phi=85.27{\deg}^{+0.26}_{-0.19}$) with a position angle $\theta_{PA}=30.35{\deg}^{+0.29}_{-0.28}$ (slightly offset from the main outer disk, $\theta_{PA}\approx29{\deg}$), that extends from an inner disk radius of $23.6^{+0.9}_{-0.6}$ AU to well outside GPI's field of view. In addition, we present an updated orbit for $\beta$ Pic $b$ based on new astrometric measurements taken in GPI's spectroscopic mode spanning 14 months. The planet has a semi-major axis of $a=9.2^{+1.5}_{-0.4}$AU, with an eccentricity $e\leq 0.26$. The position angle of the ascending node is $\Omega=31.75{\deg}\pm0.15$, offset from both the outer main disk and the inner disk seen in the GPI image. The orbital fit constrains the stellar mass of $\beta$ Pic to $1.60\pm0.05 M_{\odot}$. Dynamical sculpting by $\beta$ Pic $b$ cannot easily account for the following three aspects of the inferred disk properties: 1) the modeled inner radius of the disk is farther out than expected if caused by $\beta$ Pic b; 2) the mutual inclination of the inner disk and $\beta$ Pic $b$ is $4{\deg}$, when it is expected to be closer to zero; and 3) the aspect ratio of the disk ($h_0 = 0.137^{+0.005}_{-0.006}$) is larger than expected from interactions with $\beta$ Pic $b$ or self-stirring by the disk's parent bodies.
- Published
- 2015
- Full Text
- View/download PDF
41. The Impact of Transmission Technologies on the Evolution of the Electrical Grid
- Author
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Hernández-Callejo, Luis, Arrinda, Amaia, de la Vega, David, Fernández, Igor, Angulo, Itziar, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Kotenko, Igor, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Barbosa, Simone Diniz Junqueira, Founding Editor, Washio, Takashi, Founding Editor, Yuan, Junsong, Founding Editor, Nesmachnow, Sergio, editor, and Hernández Callejo, Luis, editor
- Published
- 2019
- Full Text
- View/download PDF
42. MODELOS DE INTERACCIONES ATÓMICAS EN MECÁNICA MOLECULAR
- Author
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Díaz, Miguel, primary, Coll, David, additional, and Vega, David, additional
- Published
- 2024
- Full Text
- View/download PDF
43. THE ORBIT AND TRANSIT PROSPECTS FOR β PICTORIS b CONSTRAINED WITH ONE MILLIARCSECOND ASTROMETRY
- Author
-
Wang, Jason J, Graham, James R, Pueyo, Laurent, Kalas, Paul, Millar-Blanchaer, Maxwell A, Ruffio, Jean-Baptiste, De Rosa, Robert J, Ammons, S Mark, Arriaga, Pauline, Bailey, Vanessa P, Barman, Travis S, Bulger, Joanna, Burrows, Adam S, Cardwell, Andrew, Chen, Christine H, Chilcote, Jeffrey K, Cotten, Tara, Fitzgerald, Michael P, Follette, Katherine B, Doyon, René, Duchêne, Gaspard, Greenbaum, Alexandra Z, Hibon, Pascale, Hung, Li-Wei, Ingraham, Patrick, Konopacky, Quinn M, Larkin, James E, Macintosh, Bruce, Maire, Jérôme, Marchis, Franck, Marley, Mark S, Marois, Christian, Metchev, Stanimir, Nielsen, Eric L, Oppenheimer, Rebecca, Palmer, David W, Patel, Rahul, Patience, Jenny, Perrin, Marshall D, Poyneer, Lisa A, Rajan, Abhijith, Rameau, Julien, Rantakyrö, Fredrik T, Savransky, Dmitry, Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Thomas, Sandrine, Vasisht, Gautam, Vega, David, Wallace, J Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane J, and Wolff, Schuyler G
- Subjects
astrometry ,planets and satellites: individual ,techniques: image processing ,astro-ph.EP ,Astronomical and Space Sciences ,Astronomy & Astrophysics - Abstract
A principal scientific goal of the Gemini Planet Imager (GPI) is obtaining milliarcsecond astrometry to constrain exoplanet orbits. However, astrometry of directly imaged exoplanets is subject to biases, systematic errors, and speckle noise. Here, we describe an analytical procedure to forward model the signal of an exoplanet that accounts for both the observing strategy (angular and spectral differential imaging) and the data reduction method (Karhunen-Loève Image Projection algorithm). We use this forward model to measure the position of an exoplanet in a Bayesian framework employing Gaussian processes and Markov-chain Monte Carlo to account for correlated noise. In the case of GPI data on β Pic b, this technique, which we call Bayesian KLIP-FM Astrometry (BKA), outperforms previous techniques and yields 1σ errors at or below the one milliarcsecond level. We validate BKA by fitting a Keplerian orbit to 12 GPI observations along with previous astrometry from other instruments. The statistical properties of the residuals confirm that BKA is accurate and correctly estimates astrometric errors. Our constraints on the orbit of β Pic b firmly rule out the possibility of a transit of the planet at 10-σ significance. However, we confirm that the Hill sphere of β Pic b will transit, giving us a rare chance to probe the circumplanetary environment of a young, evolving exoplanet. We provide an ephemeris for photometric monitoring of the Hill sphere transit event, which will begin at the start of April in 2017 and finish at the end of January in 2018.
- Published
- 2016
44. BRINGING “THE MOTH” TO LIGHT: A PLANET-SCULPTING SCENARIO FOR THE HD 61005 DEBRIS DISK
- Author
-
Esposito, Thomas M, Fitzgerald, Michael P, Graham, James R, Kalas, Paul, Lee, Eve J, Chiang, Eugene, Duchêne, Gaspard, Wang, Jason, Millar-Blanchaer, Maxwell A, Nielsen, Eric, Ammons, S Mark, Bruzzone, Sebastian, De Rosa, Robert J, Draper, Zachary H, Macintosh, Bruce, Marchis, Franck, Metchev, Stanimir A, Perrin, Marshall, Pueyo, Laurent, Rajan, Abhijith, Rantakyrö, Fredrik T, Vega, David, and Wolff, Schuyler
- Subjects
infrared: planetary systems ,planet-disk interactions ,stars: individual ,techniques: high angular resolution ,techniques: polarimetric ,astro-ph.EP ,Astronomical and Space Sciences ,Astronomy & Astrophysics - Abstract
The HD 61005 debris disk ("The Moth") stands out from the growing collection of spatially resolved circumstellar disks by virtue of its unusual swept-back morphology, brightness asymmetries, and dust ring offset. Despite several suggestions for the physical mechanisms creating these features, no definitive answer has been found. In this work, we demonstrate the plausibility of a scenario in which the disk material is shaped dynamically by an eccentric, inclined planet. We present new Keck NIRC2 scattered-light angular differential imaging of the disk at 1.2-2.3 μm that further constrains its outer morphology (projected separations of 27-135 au). We also present complementary Gemini Planet Imager 1.6 μm total intensity and polarized light detections that probe down to projected separations less than 10 au. To test our planet-sculpting hypothesis, we employed secular perturbation theory to construct parent body and dust distributions that informed scattered-light models. We found that this method produced models with morphological and photometric features similar to those seen in the data, supporting the premise of a planet-perturbed disk. Briefly, our results indicate a disk parent body population with a semimajor axis of 40-52 au and an interior planet with an eccentricity of at least 0.2. Many permutations of planet mass and semimajor axis are allowed, ranging from an Earth mass at 35 au to a Jupiter mass at 5 au.
- Published
- 2016
45. THE PECULIAR DEBRIS DISK OF HD 111520 AS RESOLVED BY THE GEMINI PLANET IMAGER
- Author
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Draper, Zachary H, Duchêne, Gaspard, Millar-Blanchaer, Maxwell A, Matthews, Brenda C, Wang, Jason J, Kalas, Paul, Graham, James R, Padgett, Deborah, Ammons, S Mark, Bulger, Joanna, Chen, Christine, Chilcote, Jeffrey K, Doyon, René, Fitzgerald, Michael P, Follette, Kate B, Gerard, Benjamin, Greenbaum, Alexandra Z, Hibon, Pascale, Hinkley, Sasha, Macintosh, Bruce, Ingraham, Patrick, Lafrenière, David, Marchis, Franck, Marois, Christian, Nielsen, Eric L, Oppenheimer, Rebecca, Patel, Rahul, Patience, Jenny, Perrin, Marshall, Pueyo, Laurent, Rajan, Abhijith, Rameau, Julien, Sivaramakrishnan, Anand, Vega, David, Ward-Duong, Kimberly, and Wolff, Schuyler G
- Subjects
circumstellar matter ,stars: individual ,astro-ph.EP ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Physical Chemistry (incl. Structural) ,Astronomy & Astrophysics - Abstract
Using the Gemini Planet Imager, we have resolved the circumstellar debris disk around HD 111520 at a projected range of ∼30-100 AU in both total and polarized H-band intensity. The disk is seen edge-on at a position angle of 165° along the spine of emission. A slight inclination and asymmetric warp are covariant and alter the interpretation of the observed disk emission. We employ three point-spread function subtraction methods to reduce the stellar glare and instrumental artifacts to confirm that there is a roughly 2:1 brightness asymmetry between the NW and SE extension. This specific feature makes HD 111520 the most extreme example of asymmetric debris disks observed in scattered light among similar highly inclined systems, such as HD 15115 and HD 106906. We further identify a tentative localized brightness enhancement and scale height enhancement associated with the disk at ∼40 AU away from the star on the SE extension. We also find that the fractional polarization rises from 10% to 40% from 0.″5 to 0.″8 from the star. The combination of large brightness asymmetry and symmetric polarization fraction leads us to believe that an azimuthal dust density variation is causing the observed asymmetry.
- Published
- 2016
46. Impact of a clinician-to-clinician electronic consultation in heart failure patients with previous hospital admissions
- Author
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Garcia-Vega, David, primary, Mazón-Ramos, Pilar, additional, Portela-Romero, Manuel, additional, Rodríguez-Mañero, Moisés, additional, Rey-Aldana, Daniel, additional, Sestayo-Fernández, Manuela, additional, Cinza-Sanjurjo, Sergio, additional, and González-Juanatey, José R, additional
- Published
- 2023
- Full Text
- View/download PDF
47. β PICTORIS’ INNER DISK IN POLARIZED LIGHT AND NEW ORBITAL PARAMETERS FOR β PICTORIS b
- Author
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Millar-Blanchaer, Maxwell A, Graham, James R, Pueyo, Laurent, Kalas, Paul, Dawson, Rebekah I, Wang, Jason, Perrin, Marshall D, moon, Dae-Sik, Macintosh, Bruce, Ammons, S Mark, Barman, Travis, Cardwell, Andrew, Chen, Christine H, Chiang, Eugene, Chilcote, Jeffrey, Cotten, Tara, De Rosa, Robert J, Draper, Zachary H, Dunn, Jennifer, Duchêne, Gaspard, Esposito, Thomas M, Fitzgerald, Michael P, Follette, Katherine B, Goodsell, Stephen J, Greenbaum, Alexandra Z, Hartung, Markus, Hibon, Pascale, Hinkley, Sasha, Ingraham, Patrick, Jensen-Clem, Rebecca, Konopacky, Quinn, Larkin, James E, Long, Douglas, Maire, Jérôme, Marchis, Franck, Marley, Mark S, Marois, Christian, Morzinski, Katie M, Nielsen, Eric L, Palmer, David W, Oppenheimer, Rebecca, Poyneer, Lisa, Rajan, Abhijith, Rantakyrö, Fredrik T, Ruffio, Jean-Baptiste, Sadakuni, Naru, Saddlemyer, Leslie, Schneider, Adam C, Sivaramakrishnan, Anand, Soummer, Remi, Thomas, Sandrine, Vasisht, Gautam, Vega, David, Wallace, J Kent, Ward-Duong, Kimberly, Wiktorowicz, Sloane J, and Wolff, Schuyler G
- Subjects
astrometry ,planet-disk interactions ,planets and satellites: individual ,techniques: polarimetric ,astro-ph.EP ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Physical Chemistry (incl. Structural) ,Astronomy & Astrophysics - Abstract
We present H-band observations of β Pic with the Gemini Planet Imager's (GPI's) polarimetry mode that reveal the debris disk between ∼0.″3 (6 AU) and ∼1.″7 (33 AU), while simultaneously detecting β Pic b. The polarized disk image was fit with a dust density model combined with a Henyey-Greenstein scattering phase function. The best-fit model indicates a disk inclined to the line of sight () with a position angle (PA) (slightly offset from the main outer disk, ), that extends from an inner disk radius of to well outside GPI's field of view. In addition, we present an updated orbit for β Pic b based on new astrometric measurements taken in GPI's spectroscopic mode spanning 14 months. The planet has a semimajor axis of , with an eccentricity The PA of the ascending node is offset from both the outer main disk and the inner disk seen in the GPI image. The orbital fit constrains the stellar mass of β Pic to Dynamical sculpting by β Pic b cannot easily account for the following three aspects of the inferred disk properties: (1) the modeled inner radius of the disk is farther out than expected if caused by β Pic b; (2) the mutual inclination of the inner disk and β Pic b is when it is expected to be closer to zero; and (3) the aspect ratio of the disk () is larger than expected from interactions with β Pic b or self-stirring by the disk's parent bodies.
- Published
- 2015
48. The Global Orchid Market
- Author
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Yuan, Shih-Chang, primary, Lekawatana, Setapong, additional, Amore, Teresita D., additional, Chen, Fure-Chyi, additional, Chin, Shih-Wen, additional, Vega, David Monge, additional, and Wang, Yin-Tung, additional
- Published
- 2021
- Full Text
- View/download PDF
49. Application of Computer Aided Design and Additive Manufacturing to the recovery of the Paddle Boat by Francesco Di Giorgio
- Author
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Vega, David Piñero, Valerga, Ana Pilar, Ordoñez Orellana, F. Alejandro, and Batista, Moises
- Published
- 2019
- Full Text
- View/download PDF
50. Design and virtual validation of CMOS image sensor camera
- Author
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Lépine, Thierry, Babington, James, Gross, Herbert, Gely, Sandra, Nazari, Mina, Gilleran, TJ, Noygues, Sebastien, Meyer, Charly, Duque Gomez, Federico, Robertson, Taylor, Cheng, Michael, Vega, David, Morales, Angel, Chen, Chih-Hao, Shin, Dong Sub, and Cailler, Maxime
- Published
- 2024
- Full Text
- View/download PDF
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