Results 91 to 100 of about 417,027 (232)
Radial migration in disc galaxies — I. Transient spiral structure and dynamics [PDF]
, 2011 We seek to understand the origin of radial migration in spiral galaxies by analysing in detail the structure and evolution of an idealized, isolated galactic disc.
R. Roskar +4 more
semanticscholar +1 more source
SECULAR EVOLUTION OF SPIRAL GALAXIES [PDF]
Journal of The Korean Astronomical Society, 2003 15 pages, 8 figures, Invited talk presented at the 2nd APCTP workshop on Astrophysics, Pohang, Korea (June 2002)
openaire +4 more sources
The Plant Journal, Volume 124, Issue 2, October 2025.SUMMARY DNA repair is crucial for genome stability, in particular for plants which are exposed to high levels of damage arising from UV irradiation, soil pollutants and reactive oxygen species. Damage that affects both strands of the DNA duplex is harder to repair due to both the lack of a template strand and the potential for physical separation of ...
Atheer Balobaid +7 more
wiley +1 more source
Spiral structure in nearby galaxies – I. Sample, data analysis and overview of results [PDF]
, 2011 This paper, the first of two, introduces an observational study of spiral structure in galaxies chosen from the Spitzer Infrared Nearby Galaxies Survey (SINGS).
S. Kendall, R. Kennicutt, C. Clarke
semanticscholar +1 more source
ChemPhysChem, Volume 26, Issue 18, September 19, 2025.In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu +7 more
wiley +1 more source
OBSERVATIONAL EVIDENCE AGAINST LONG-LIVED SPIRAL ARMS IN GALAXIES [PDF]
, 2011 We test whether the spiral patterns apparent in many large disk galaxies should be thought of as dynamical features that are stationary in a corotating frame for ≳ tdyn, as implied by the density wave approach for explaining spiral arms.
K. Foyle +4 more
semanticscholar +1 more source
Advanced Science, Volume 12, Issue 34, September 11, 2025.This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley +1 more source
Staphylococcus aureus AgrA Modulators From South African Antimicrobial Plants
Chemistry &Biodiversity, Volume 22, Issue 9, September 2025.The study workflow utilized validated in silico [molecular docking, fingerprinting, pharmacokinetics prediction, molecular dynamics (MD) simulation, ligand‐protein contact maps] tools to bioprospect a wide variety of metabolites surveyed from South African plants with antimicrobial activities, and target them against the key S.
Christiana Eleojo Aruwa, Saheed Sabiu
wiley +1 more source
Stellar diffusion in barred spiral galaxies [PDF]
, 2011 We characterize empirically the radial diffusion of stars in the plane of a typical barred disk galaxy by calculating the local spatial diffusion coefficient and diffusion time-scale for bulge-disk-halo N-body self-consistent systems which initially ...
M. Brunetti, C. Chiappini, D. Pfenniger
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. +3 more
openaire +2 more sources