Results 91 to 100 of about 56,300 (290)

SQ-A: A Collision-triggered Starburst in the Intragroup Medium of Stephan’s Quintet

The Astrophysical Journal
We present new observational evidence supporting the hypothesis that SQ-A, a starburst in the intragroup medium (IGrM) of Stephan’s Quintet (SQ), is triggered by a high-speed collision between two gas systems, one associated with the IGrM ( v  ∼ 6900 km ...
C. K. Xu, C. Cheng, M. S. Yun, P. N. Appleton, B. H. C. Emonts, J. Braine, S. C. Gallagher, P. Guillard, U. Lisenfeld, E. O’Sullivan, F. Renaud, P. Aromal, P.-A. Duc, A. Labiano, A. Togi   +14 more
doaj   +1 more source

Evaluating a Pragmatic Strength Alternative for Frailty Measurement and Assessing Its Predictive Capacity Against Established Frailty Instruments in Rheumatoid Arthritis

Arthritis Care &Research, EarlyView.
Objective Frailty occurs prematurely in rheumatoid arthritis (RA) and is associated with poor health outcomes. We compared the performance of four frailty instruments, including a pragmatic alternative measure using chair sit‐to‐stand (STS), and evaluated their abilities to predict poor health outcomes.
Kylie E. Riggles, Hannah F. Brubeck, Adrienne D. Tanus, Courtney N. Loecker, Punyasha Roul, Bryant R. England, Elizabeth R. Wahl, James S. Andrews, Namrata Singh, Joshua F. Baker, Patricia P. Katz, Dolores M. Shoback, Jose M. Garcia, Ariela R. Orkaby, Katherine D. Wysham   +14 more
wiley   +1 more source

TECHNIQUES AND INSTRUMENTATION FOR PHASED ARRAY CALIBRATION [PDF]

, 2020
Active phased arrays suffer the inherent problem of excitation errors, i.e., incorrect phase and amplitude excitation of the antenna elements. Excitation errors degrade critical performance parameters since they increase sidelobe level and reduce antenna
Lebron Garcia, Rodrigo
core  

exoALMA. II. Data Calibration and Imaging Pipeline

The Astrophysical Journal Letters
The exoALMA Large Program was designed to search for subtle kinematic deviations from Keplerian motion, indicative of embedded planets, in high-angular-resolution and high-spectral-resolution Band 7 observations of ^12 CO, ^13 CO, and CS emission from ...
Ryan A. Loomis, Stefano Facchini, Myriam Benisty, Pietro Curone, John D. Ilee, Gianni Cataldi, Hsi-Wei Yen, Richard Teague, Christophe Pinte, Jane Huang, Himanshi Garg, Ryuta Orihara, Ian Czekala, Brianna Zawadzki, Sean M. Andrews, David J. Wilner, Jaehan Bae, Marcelo Barraza-Alfaro, Daniele Fasano, Mario Flock, Misato Fukagawa, Maria Galloway-Sprietsma, Andrés F. Izquierdo, Kazuhiro Kanagawa, Geoffroy Lesur, Cristiano Longarini, Francois Menard, Daniel J. Price, Giovanni Rosotti, Jochen Stadler, Gaylor Wafflard-Fernandez, Lisa Wölfer, Tomohiro C. Yoshida   +32 more
doaj   +1 more source

Rheumatologic Manifestations of Patients With Type B Insulin Resistance

Arthritis Care &Research, EarlyView.
Objective The objectives of this study were to identify laboratory and clinical features associated with type B insulin resistance (TBIR), a rare condition caused by autoantibodies that inhibit the insulin receptor, most frequently occurring in the setting of systemic lupus erythematosus (SLE), and to increase awareness of this rare, life‐threatening ...
S. Amara Ogbonnaya, Sandra G. Williams, Raphael A. Kirou, Marissa Lightbourne, Rebecca J. Brown   +4 more
wiley   +1 more source

Adaptive Correntropy based Correlation for DOA Estimation by using Co-prime Array in the Presence of Impulsive Noise [PDF]

International audienceFinding directions-of-arrival (DOAs) of targets byusing co-prime array, extensively investigated in the scenario ofGaussian disturbances, faces issues with impulsive backgroundnoise.
Wang, Yide, Sun, Meng, Zhang, Xiaofei, Pan, Jingjing, So, H. C., Dong, Xudong   +5 more
core   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Bird's-eye View of Molecular Gas across Stephan's Quintet Galaxy Group and Intragroup Medium

The Astrophysical Journal
We present the large-scale distribution and kinematics of cold molecular gas across the compact galaxy group Stephan’s Quintet, based on CO(2–1) observations performed with the Atacama Compact Array (ACA) and CO(1–0) data from the Combined Array for ...
B. H. C. Emonts, P. N. Appleton, U. Lisenfeld, P. Guillard, C. K. Xu, W. T. Reach, L. Barcos-Muñoz, A. Labiano, P. M. Ogle, E. O’Sullivan, A. Togi, S. C. Gallagher, P. Aromal, P.-A. Duc, K. Alatalo, F. Boulanger, T. Díaz-Santos, G. Helou   +17 more
doaj   +1 more source

Direction-Of-Arrival Estimation Using Multi-Frequency Co-Prime Arrays

, 2014
Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal ...
Elie BouDaher, Yong Jia, Fauzia Ahmad, Moeness G. Amin   +3 more
openaire   +3 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source