Results 51 to 60 of about 606,368 (330)

Acoustic Measures Capture Speech Dysfunction in Spinocerebellar Ataxia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Spinocerebellar ataxias (SCA) are hereditary cerebellar degenerative disorders with a common feature of dysarthria, involving impaired phonatory and articulatory control of speech, thereby affecting social communication. In this study, we investigated whether acoustic measures could objectively measure speech dysfunction and identify
Zena Fadel, Charlotte Hennessey, Hannah Lee, Pia Parekh, Sheng‐Han Kuo, Ami Kumar   +5 more
wiley   +1 more source

Discovery of a Collimated Jet from the Low-luminosity Protostar IRAS 16253−2429 in a Quiescent Accretion Phase with the JWST

The Astrophysical Journal Letters
Investigating Protostellar Accretion (IPA) is a JWST Cycle 1 GO program that uses NIRSpec integral field units and MIRI Medium Resolution Spectrograph to obtain 2.9–28 μ m spectral cubes of young, deeply embedded protostars with luminosities of 0.2–10 ...
Mayank Narang, P. Manoj, Himanshu Tyagi, Dan M. Watson, S. Thomas Megeath, Samuel Federman, Adam E. Rubinstein, Robert Gutermuth, Alessio Caratti o Garatti, Henrik Beuther, Tyler L. Bourke, Ewine F. Van Dishoeck, Neal J. Evans II, Guillem Anglada, Mayra Osorio, Thomas Stanke, James Muzerolle, Leslie W. Looney, Yao-Lun Yang, Pamela Klaassen, Nicole Karnath, Prabhani Atnagulov, Nashanty Brunken, William J. Fischer, Elise Furlan, Joel Green, Nolan Habel, Lee Hartmann, Hendrik Linz, Pooneh Nazari, Riwaj Pokhrel, Rohan Rahatgaonkar, Will R. M. Rocha, Patrick Sheehan, Katerina Slavicinska, Amelia M. Stutz, John J. Tobin, Lukasz Tychoniec, Scott Wolk   +38 more
doaj   +1 more source

Stellar Signatures of AGN Jet Triggered Star Formation

, 2014
To investigate feedback between relativistic jets emanating from Active Galactic Nuclei (AGN) and the stellar population of the host galaxy, we analyze the long-term evolution of the galaxy-scale simulations by Gaibler et al.
Bryan, Sarah, Dugan, Zachary, Gaibler, Volker, Haas, Marcel, Silk, Joseph   +4 more
core   +2 more sources

Scaling stellar jets to the laboratory: The power of simulations [PDF]

, 2009
Advances in laser and Z-pinch technology, coupled with the development of plasma diagnostics, and the availability of high-performance computers, have recently stimulated the growth of high-energy density laboratory astrophysics.
C. Stehlé, Andrea Ciardi, J. Colombier, Matthias González, T. Lanz, A. Marocchino, M. Kozlová, B. Rus   +7 more
semanticscholar   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Discovery of synchrotron emission from a YSO jet

EPJ Web of Conferences, 2013
Synchrotron emission at radio wavelengths is commonly found in relativistic jets from active galactic nuclei (AGNs) and microquasars and allows the study of the magnetic field in these kind of jets.
Carrasco-González Carlos, Rodríguez Luis F., Anglada Guillem, Martí Josep, Torrelles Jose M., Osorio Mayra   +5 more
doaj   +1 more source

Nonradial and nonpolytropic astrophysical outflows IX. Modeling T Tauri jets with a low mass-accretion rate

, 2011
Context: A large sample of T Tauri stars exhibits optical jets, approximately half of which rotate slowly, only at ten per cent of their breakup velocity.
Agra-Amboage, Aibéo, Anderson, André, Bardeen, Beck, Bertout, Blandford, Bouvier, Bouvier, Bouvier, C. Sauty, Cabrit, Cabrit, Calvet, Casse, Choi, Cieza, Clarke, Contopoulos, Decampli, Donati, Dougados, Edwards, Edwards, Fendt, Ferreira, Ferreira, Ferro-Fontán, Garcia, Garcia, Ghosh, Ghosh, Gracia, Gómez de Castro, Gómez de Castro, Günther, Hartigan, Herbst, J. J. G. Lima, K. Tsinganos, Koide, Kopp, Krasnopolsky, Kundurthy, Kwan, Küker, Lavalley-Fouquet, Li, Lima, Marilli, Matsakos, Matsakos, Matt, Matt, Matt, Matt, Matt, Meliani, Mestel, Mestel, Mora, N. Globus, Ouyed, Petrov, Pudritz, Rebull, Rebull, Rebull, Romanova, Sauty, Sauty, Sauty, Sauty, Sauty, Schatzman, Schwartz, Shang, Shu, Spruit, St-Onge, Stassun, Stassun, Stute, Ustyugova, V. Cayatte, Vidotto, Vidotto, Vlahakis, Vlahakis, Walter, Weber, Z. Meliani, Zanni   +93 more
core   +2 more sources

Diagnostics of inhomogeneous stellar jets - Convolution effects and data reconstruction [PDF]

, 2008
Context. In the interpretation of stellar jet observations, the physical parameters are usually determined from emission line ratios, obtained from spectroscopic observations or using the information contained in narrow band images.
F. Colle, C. D. Burgo, A. Raga
semanticscholar   +1 more source

Mitigation of Cracks in High‐Performance Nickel‐Based Superalloys in Powder Bed Fusion Laser Beam of Metals Using a Metal Matrix Composite Approach

Advanced Engineering Materials, EarlyView.
High‐performance nickel‐based superalloys are often not processible in additive manufacturing (AM) due to hot cracking. The findings in this manuscript propose an efficient method to mitigate cracking and enhance mechanical properties of these alloys by producing a metal matrix composite, contributing to the material and process perspective of the AM ...
Klaus Büßenschütt, Maël Pontoreau, Christian Haase, Johannes‐Henrich Schleifenbaum   +3 more
wiley   +1 more source

Influence of Heat Treatment on Microstructure and Mechanical Properties at Elevated Temperatures of Nonweldable Ni‐Based Alloy Printed by Fused Filament Fabrication

Advanced Engineering Materials, EarlyView.
The fused filament‐fabricated MAR‐M247 alloy without hot isostatic pressing shows the lowest porosity of 4%. Heat treatment at 1220 °C produces coarse precipitates and carbides. Specimens heat‐treated at 1220 °C exhibit higher tensile strength (683 MPa) and elongation (10%) at room temperature.
Haneen Daoud, Ying Zheng, Agata Kulig, Natalja Agarkov, Esma Mese, Wolfgang Hofmann, Peter Würtele, Uwe Glatzel   +7 more
wiley   +1 more source