Results 91 to 100 of about 73,146 (266)

The Chemical Evolution Carousel of Spiral Galaxies : Azimuthal Variations of Oxygen Abundance in NGC1365 [PDF]

, 2017
19 pages, 13 figures. Accepted to ApJThe spatial distribution of oxygen in the interstellar medium of galaxies is the key to understanding how efficiently metals that are synthesized in massive stars can be redistributed across a galaxy.
Alloin D., Balser D. S., Barry F. Madore, Bigiel F., Blanc G. A., Brent A. Groves, Bresolin F., Bresolin F., Cappellari M., Chiaki Kobayashi, Croxall K. V., de Avillez M. A., de Vaucouleurs G., Dobbs C., Dopita M. A., Edmunds M. G., Elmegreen B. G. ed Friedli D., Eva Schinnerer, Helmboldt J. F., Henry Poetrodjojo, Ho I.-T., I-Ting Ho, Jang I. S., Jarrett T. H., Jeffrey A. Rich, Joshua D’Agostino, Kewley L. J., Kewley L. J., Kobayashi C., Kreckel K., Kudritzki R. P., Leitherer C., Lequeux J., Leroy A. K., Li Y., Lilly S. J., Lindblad P. A. B., Lisa J. Kewley, Mark Seibert, Markwardt C. B. ed Bohlender D. A., Masset F., Muñoz-Mateos J. C., Rolf-Peter Kudritzki, Rosolowsky E., Roy J.-R., Sanders R. L., Sharon E. Meidt, Speights J. C., Sánchez-Menguiano L., Thilker D. A., Thilker D. A., Torrey P., Tremonti C. A., Vera-Villamizar N., Yuan T.-T., Zahid H. J., Zahid H. J., Zurita A., Zánmar Sánchez R.   +58 more
core   +4 more sources

Characterization of Pilin A and Thioredoxin A Mutant Strains of Acinetobacter baumannii, From a Transposon Insertion Library, for Pili Production and Virulence‐Associated Properties

MicrobiologyOpen, Volume 14, Issue 6, December 2025.
Acinetobacter baumannii transposon insertion mutant strains ΔpilA and ΔtrxA display marked reductions of surface pili. The PilA (a major pilin protein) and TrxA (thioredoxin A) deficient bacteria also show attenuation in pathogenesis including the reduction of intestinal bacterial attachment, increased phagocytic uptake and decreased mortality from ...
Jadelynn Aki, Sara B. Papp, Bayley Polk, Sean Jeffreys, Megan P. Tompkins, Anwar A. Kalalah, Mark Eppinger, Guoquan Zhang, M. N. Guentzel, James P. Chambers, Bernard P. Arulanandam, Jieh‐Juen Yu   +11 more
wiley   +1 more source

A Comprehensive Analysis on the Nature of the Spiral Arms in NGC 3686, NGC 4321, and NGC 2403

Galaxies
In theoretical investigations, various mechanisms have been put forward to explain the emergence of spiral patterns in galaxies. One of the few ways to find out the nature of spirals in a particular galaxy is to consider the so-called corotation radius ...
Valeria Kostiuk, Alexander Marchuk, Alexander Gusev, Ilia V. Chugunov   +3 more
doaj   +1 more source

The Effect of Corotation on the Radial Gradient of Metallicity of Spiral Galaxies

, 2010
The corotation radius in a spiral galaxy is the radius where the spiral pattern speed has the same velocity of the rotation curve. By compiling results from the literature for 20 spiral galaxies we verified a strong correlation between the radius of the ...
Lepine, J. R. D., Scarano Jr., S.
core   +1 more source

Betaine‐Conjugated ß‐Peptide Foldamers: Influence of Quaternary Charge on Self‐Organization and MorphologyFormation

ChemistryOpen, Volume 14, Issue 12, December 2025.
N‐terminal betaine conjugation modifies β‐peptide helices, influencing folding and self‐organization. For [1S, 2S]‐ACPC, folding to an H12 helix was unaffected, while [1R, 2R]‐ACHC formed an H14 helix instead of H10. Alternating heterochiral oligomers made of enantiomeric pairs of trans‐ACPC showed enhanced solubility and E‐strand formation.
Nikolett Varró, Eszter Erdei, Dóra Bogdán, Eszter Kalydi, Ruth Deme, Balázs Balogh, Imola Cs. Szigyártó, Tamás Beke‐Somfai, Zoltán Varga, Pál Szabó, István M. Mándity   +10 more
wiley   +1 more source

Star Formation in the Lopsided Galaxy Arp 291

The Astrophysical Journal
We have investigated the star formation process taking place in the lopsided galaxy Arp 291, based on narrowband images in the H α , [N ii ] λ 6583, and [O iii ] λ 5007 emission lines, obtained using the modern tunable photometer MaNGaL at the Caucasus ...
Irina S. Proshina, Dmitriy V. Oparin
doaj   +1 more source

Groundwater Microbial Diversity Associated With Icelandic Basaltic Subsurface Environments

Environmental Microbiology Reports, Volume 17, Issue 6, December 2025.
Overview of microbial diversity and environmental drivers in Icelandic deep basaltic aquifers. Using 16S rRNA gene metabarcoding across 22 geothermal wells spanning broad temperature, pH, and bedrock‐age gradients, the study reveals distinct bacterial and archaeal community structures shaped by temperature, pH, and host‐rock reactivity.
Juliette Bas‐Lorillot, Bénédicte Ménez, Bastien Wild, Guillaume Borrel, Manon Le Bihan, Andri Stefánsson, Jóhann Gunnarsson‐Robin, Anna Bríet Bjarkadóttir, Sigríður María Aðalsteinsdóttir, Delphine Tisserand, Damien Daval, Emmanuelle Gérard   +11 more
wiley   +1 more source

Tracing the Spiral Structure of the Outer Milky Way with Dense Atomic Hydrogen Gas

, 2017
We present a new face-on map of dense neutral atomic hydrogen (HI) gas in the outer Galaxy. Our map has been produced from the Leiden/Argentine/Bonn (LAB) HI 21-cm line all-sky survey by finding intensity maxima along every line of sight and then by ...
Balser, Dana S., Kim, Woong-Tae, Koo, Bon-Chul, Lee, Myung Gyoon, Park, Geumsook, Wenger, Trey V., 김웅태   +6 more
core   +1 more source

In silico, in vitro and ex vivo characterization of cystic fibrosis transmembrane conductance regulator pathogenic variants localized in the fourth intracellular loop and their rescue by modulators

British Journal of Pharmacology, Volume 182, Issue 24, Page 6063-6080, December 2025.
Background and Purpose Cystic fibrosis (CF) is due to loss‐of‐function variants of the CF transmembrane conductance regulator (CFTR) channel. The most effective treatment for people with CF carrying the F508del mutation is the triple combination of elexacaftor–tezacaftor–ivacaftor (ETI).
Emanuela Pesce, Valeria Tomati, Valeria Capurro, Mariateresa Lena, Cristina Pastorino, Miro Astore, Serdar Kuyucak, Benoit Chevalier, Elvira Sondo, Federico Cresta, Alice Dighero, Vito Terlizzi, Cristina Fevola, Stefano Costa, Maria Cristina Lucanto, Valeria Daccò, Laura Claut, Francesca Ficili, Benedetta Fabrizzi, Renata Bocciardi, Federico Zara, Carlo Castellani, Luis J. V. Galietta, Shafagh A. Waters, Alexandre Hinzpeter, Nicoletta Pedemonte   +25 more
wiley   +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   +2 more sources