Results 91 to 100 of about 1,144,964 (311)
Relative Evolutionary Timescale of Hot Molecular Cores with Respect to Ultracompact H II Regions
, 2005 Using the Owens Valley and Nobeyama Radio Observatory interferometers, we carried out an unbiased search for hot molecular cores and ultracompact (UC) H II regions toward the high-mass star-forming region G19.61-0.23.
Furuya R +6 more
core
FEBS Letters, EarlyView.An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley +1 more source
On the electron temperatures in high-metallicity H ii regions
, 2009 The electron temperatures of high-metallicity [12 + log (O/H) > 8.2] H ii regions have been studied. The empirical flux-flux relations which express the nebular-to-auroral [O iii] line ratio Q(3,O) (as well as the nebular-to-auroral [O ii] line ratio ...
Vilchez, M +3 more
core +1 more source
The First Empirical Calibration of the Mid-infrared Abundance Diagnostic Ne23 with JWST
The Astrophysical Journal LettersLarge surveys of galaxies in the local and high-redshift Universe have, traditionally, relied on the intensity of rest-optical emission lines from metal ions in the interstellar medium (ISM) to indirectly estimate the O/H abundance in the gas.
Noah S. J. Rogers +12 more
doaj +1 more source
From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
FEBS Letters, EarlyView.Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara +3 more
wiley +1 more source
Reddening and extinction towards H II regions
, 1989 The light emitted by the gas in H II regions is attenuated by dust. This extinction can be measured by comparing H alpha, H beta, and radio continuum fluxes, since the intrinsic ratios of the Balmer line and thermal radio continuum emissivities are ...
Deharveng, Lise, Caplan, James
core
Low-mass Stellar and Substellar Content of the Young Cluster Berkeley 59
The Astronomical JournalWe present a multiwavelength analysis of the young star cluster Berkeley 59, based on Gaia data and deep IR observations with the 3.58 m Telescopio Nazionale Galileo and Spitzer space telescope.
Neelam Panwar +6 more
doaj +1 more source
The Astrophysical Journal, 1982 Observations of the molecular gas surrounding the biconical H II region S106 reveal a approx.100 M/sub sun/ disk constraining the development of the ionized region. Two CO peaks are seen in the equatorial plane of the biconical nebula on opposite sides of a near infrared source thought to be the exciting star for the H II region. Although no systematic
J. Bally, N. Z. Scoville
openaire +1 more source
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source