Results 181 to 190 of about 3,407 (289)

Formation of the infalling Galactic Centre cloud G2 by collision of stellar winds

, 2015
The gas cloud G2 is currently being tidally disrupted by the Galactic Centre super-massive black hole, Sgr A*. The region around the black hole is populated by ∼ 30 Wolf-Rayet stars, which produce strong outflows. Here we explore the possibility that gas
Gillessen, S., Schartmann, M., Burkert, Andreas, Cuadra, J., Calderón, D., Ballone, A.   +5 more
core  

Four Directions, One Solution: Enabling Rapid Diffusion Tensor MRI for Ultra‐Low Field Using Deep Learning

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This study revisits the tetrahedral encoding strategy originally proposed to accelerate Diffusion Tensor Magnetic Resonance Imaging (DT‐MRI) by reducing the requisite number of diffusion‐weighted measurements to four. We examine its practical limitations and explore how artificial intelligence (AI) can extend its utility. Specifically,
Joshua Mawuli Ametepe, James Gholam, Leandro Beltrachini, Mara Cercignani, Derek Kenton Jones   +4 more
wiley   +1 more source

Constraining the magnetohydrodynamic turbulence around Geminga by observing the γ-ray halo beyond 100 TeV. [PDF]

Sci Adv
Tibet ASγ Collaboration.
europepmc   +1 more source

Fourier Shell Analysis: k‐Space‐Based Metrics for Assessing Super‐Resolution in 4D Flow MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To support the emerging field of super‐resolution (SR) in 4D flow MRI by proposing Fourier shell analysis to disentangle resolution enhancement from denoising effects during evaluation. Methods A thoracic aortic 4D flow MRI dataset was synthesized with various degrees of stenosis, providing ground truth flow fields generated using ...
Luuk Jacobs, Pietro Dirix, Sebastian Kozerke   +2 more
wiley   +1 more source

Accreting White Dwarfs: An Unreview. [PDF]

Space Sci Rev
Scaringi S, Knigge C, de Martino D.
europepmc   +1 more source

Prospective Head Motion Correction in T1‐ and T2‐Weighted Long Echo Train Sequences Using Servo Navigation

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To integrate MR‐based servo navigation in MPRAGE and 3D‐TSE sequences and demonstrate its potential for prospective head motion correction in structural imaging. Methods Repeated modules of servo navigators were inserted before each preparation pulse of MPRAGE and 3D‐TSE sequences (before‐prep) for rapid convergence of motion parameter
Matthias Serger, Malte Riedel, Rüdiger Stirnberg, Thomas Ulrich, Nicolas Boulant, Klaas P. Pruessmann, Tony Stöcker, Philipp Ehses   +7 more
wiley   +1 more source

Flux equipartition in astrophysical plasma turbulence. [PDF]

Sci Adv
Marino R, Xie JH.
europepmc   +1 more source

CLEC14A correlates with neutrophil infiltration in hepatocellular carcinoma and mediates neutrophil recruitment across liver endothelial cells

The Journal of Pathology, EarlyView.
Abstract Hepatocellular carcinoma (HCC) is a leading cause of cancer‐related deaths globally, and cases are predicted to rise dramatically over the next few years. Overcoming the immune microenvironment in HCC remains a challenge, and innate immune populations such as tumour‐associated neutrophils can potentially impair the success of immunotherapy ...
Joanne M O'Rourke, Dean Kavanagh, Ayla O'Keeffe, Kylie Savoye, Kaiyi Yang, Daniel A Patten, Catherine E Willoughby, Josep M Llovet, Georgiana Neag, Helen L Reeves, Peter W Hewett, Neena Kalia, Tahir Shah, Yuk Ting Ma, Kelly Hunter, Joe Flint, Jack L McMurray, Owen Cain, Fabian Spill, Derek A Mann, Amy J Naylor, Victoria Heath, Christopher J Weston, Roy Bicknell, Shishir Shetty   +24 more
wiley   +1 more source

Multiple outflows and delayed ejections revealed by early imaging of novae. [PDF]

Nat Astron
Aydi E, Monnier JD, Mérand A, Schaefer GH, Chomiuk L, Otulakowska-Hypka M, Fan JL, Li KL, Sokolovsky KV, Salinas R, Tucker M, Shappee B, Rudy R, Page KL, Kuin NPM, Buckley DAH, Craig P, Izzo L, Linford J, Metzger BD, Mukai K, Orio M, Shen KJ, Strader J, Sokoloski JL, Williams RE, Williams MN, Habtie GR, Kraus S, Anugu N, Bouquin JL, Chhabra S, Codron I, Gardner T, Gutierrez M, Ibrahim N, Lanthermann C, Setterholm BR, Ashall C, Hinkle JT, Jaeger T, Payne AV.   +41 more
europepmc   +1 more source

The Need for Fundamental Photovoltaics Research to Ensure Energy Security

Progress in Photovoltaics: Research and Applications, EarlyView.
The center of this graphic focuses on the core of this paper—that fundamental research is central to the continued development of the photovoltaic (PV) industry. To the left, we have depictions of what is being studied—PV materials, PV cell structures, and PV module structures.
Rebecca Saive, Gavin Conibeer, Lisanne M. Einhaus, Jean‐François Guillemoles, Koami Soulemane Hayibo, Karin Hinzer, Jacob J. Krich, Martha Lenio, Michael P. Nielsen, Frederick U. Nitta, Ian R. Sellers, Daniel Suchet, Eric Tervo, Tom Tiedje, Jelle Westerhof   +14 more
wiley   +1 more source