Results 151 to 160 of about 470,379 (288)

TESTING THEORIES IN BARRED-SPIRAL GALAXIES [PDF]

, 2011
According to one version of the recently proposed “manifold” theory that explains the origin of spirals and rings in relation to chaotic orbits, galaxies with stronger bars should have a higher spiral arms pitch angle when compared to galaxies with ...
E. E. Mart'inez-Garc'ia
semanticscholar   +1 more source

In Vitro Validation of Pulsed Electromagnetic Field (PEMF) as an Effective Countermeasure Against Inflammatory‐Mediated Intervertebral Disc Degeneration

JOR SPINE, Volume 8, Issue 2, June 2025.
ABSTRACT Background Intervertebral disc (IVD) degeneration (IDD) is the main contributor to chronic low back pain (LBP), the leading cause of disability worldwide, with a significant impact on the quality of life and health of common people. The etiology of IDD is still unclear, but it has been largely demonstrated the crucial role of inflammation and ...
Laura Guarnaccia, Laura Begani, Silvana Pileggi, Mauro Pluderi, Stefano Borsa, Claudia Fanizzi, Massimiliano Domenico Rizzaro, Giorgio Fiore, Laura Fontana, Rolando Campanella, Chiara Cordiglieri, Chiara Gaudino, Giovanni A. Alotta, Monica Miozzo, Emanuele Garzia, Emanuela Barilla, Lorenzo Fassina, Laura Riboni, Marco Locatelli, Giovanni Marfia, Stefania E. Navone   +20 more
wiley   +1 more source

The Impacts of Bars, Spirals, and Bulge Size on Gas-phase Metallicity Gradients in MaNGA Galaxies

The Astrophysical Journal
As galaxies evolve over time, the orbits of their constituent stars are expected to change in size and shape, moving stars away from their birth radius. Radial gas flows are also expected. Spiral arms and bars in galaxies are predicted to help drive this
M. E. Wisz, Karen L. Masters, Kathryne J. Daniel, David V. Stark, Francesco Belfiore   +4 more
doaj   +1 more source

On the Origins of Starburst and Post-Starburst Galaxies in Nearby Clusters

, 1998
HST WFPC2 images in B (F450W) and I (F814W) have been obtained for three starburst (SB) and two post-starburst (PSB) galaxies in the Coma cluster, and for three such galaxies in the cluster DC2048-52.
Barger A. J., Belloni P., Biviano A., Bower R. G., Bower R. G., Briel U. G., Couch W. J., Dressler A., Haynes M. P., James A. Rose, Kauffmann G., Kristi Dendy, Lobo C., MacLaren I., Moss C., Nelson Caldwell, Pickles A. J., Richardson W. H., Soucail G., Watt M. P., White S. D. M.   +20 more
core   +1 more source

SELF-PERPETUATING SPIRAL ARMS IN DISK GALAXIES [PDF]

, 2012
The causes of spiral structure in galaxies remain uncertain. Leaving aside the grand bisymmetric spirals with their own well-known complications, here we consider the possibility that multi-armed spiral features originate from density inhomogeneities ...
E. D’Onghia, M. Vogelsberger, L. Hernquist   +2 more
semanticscholar   +1 more source

Plant‐Based Mycetoma Inhibitors Targeting the 50S Ribosomal Protein of Nocardia brasiliensis: In Silico Approach

ChemistrySelect, Volume 10, Issue 21, June 4, 2025.
In‐silico drug discovery pipeline for Mycetoma caused by Nocardia brasiliensis. A library of 1034 phytocompounds was screened to identify potent inhibitors, with Parviflorone F showing strong binding and stability against the 50S ribosomal unit. Molecular dynamics confirmed its inhibitory potential, offering a promising therapeutic candidate.
Sandra Jose, Manjunathan Jagadeesan, Meenambiga Setti Sudharsan, Pasiyappazham Ramasamy, Shyamala Gowri, Muthu Thiruvengadam, Sowmya Hari, Baskar Venkidasamy   +7 more
wiley   +1 more source

On the Role of Noncircular Motions in MaNGA Galaxies. I. Global Properties

The Astrophysical Journal
Noncircular (NC) motions represent the imprints of nonaxisymmetric structures in galaxies, providing opportunities to study the physical properties of gas departing from circular rotation.
Carlos López-Cobá, Lihwai Lin, Justus Neumann, Matthew A. Bershady   +3 more
doaj   +1 more source

Spiral arm pitch angle and galactic shear rate in N-body simulations of disc galaxies [PDF]

, 2012
Spiral galaxies are observed to exhibit a range of morphologies, in particular in the shape of spiral arms. A key diagnostic parameter is the pitch angle, which describes how tightly wound the spiral arms are.
R. Grand, D. Kawata, M. Cropper
semanticscholar   +1 more source

THE OPACITY OF SPIRAL GALAXY DISKS [PDF]

, 2007
The opacity of foreground spiral disks can be probed from the number of distant galaxies seen through them. To calibrate this number for effects other than the dust extinction, Gonzalez et al. (1998) developed the "Synthetic Field Method". A synthetic field is an extincted Hubble Deep Field added to the science field.
Holwerda, Benne W., González, R. A., Allen, Ronald J., Van Der Kruit, P. C.   +3 more
openaire   +2 more sources

H II regions and the abundance properties of spiral galaxies

, 1994
We investigate the relationships between the characteristic oxygen abundance, the radial abundance gradient, and the macroscopic properties of spiral galaxies by examining the properties of individual H II regions within those galaxies.
D. Zaritsky, R. Kennicutt, J. Huchra
semanticscholar   +1 more source