Results 51 to 60 of about 1,149,495 (269)
Resonant Scattering of the He i 1.0833 μm Triplet in H ii Regions: Emission Spectra
The Astrophysical JournalResonant scattering of He i 1.0833 μ m triplet photons by metastable He 2 ^3 S _1 is studied for optical depths characteristic of H ii regions. Regions with large He 2 ^3 S _1 column densities are predicted to have unusually broad multipeaked 1.0833 μ m ...
B. T. Draine
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EMISSION LINE OBSERVATIONS OF H II REGIONS [PDF]
Symposium - International Astronomical Union, 1981 Optical observations provide a wealth of information on atomic abundances, the excitation (level of ionization), the kinetic temperature, and the density of the gas in H II regions. However, obscuration by dust limits optical observations of galactic H II regions to those which are nearby (within a few kpc) and which are unobscured by the molecular ...
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
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The Astrophysical JournalThe abundance discrepancy problem refers to the systematic differences observed between chemical abundances derived from collisionally excited lines (CELs) and recombination lines (RLs) of heavy ions.
Amrita Singh +21 more
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FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
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SIGNALS of Giant H II Regions: A Spatially Resolved Analysis of NGC 604
The Astrophysical JournalObserving giant H II regions at fine spatial scales uncovers detailed structures and reveals variations in ionization, abundance, and dynamical properties of ionized gas and the effect of stellar feedback.
Ray Garner III +8 more
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FEBS Letters, EarlyView.CT10 regulator of kinase (CRK) and CRK‐Like (CRKL) are signaling adaptors driving cell adhesion, motility, differentiation, and proliferation. SH2‐domain containing (SH) proteins are enriched in YXXP motifs which when phosphorylated create preferred binding sites for CRK family SH2 domains.
Phoebe M. Cousens +8 more
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The Metallicity–Electron Temperature Relationship in H ii Regions
The Astrophysical JournalH ii region heavy-element abundances throughout the Galactic disk provide important constraints to theories of the formation and evolution of the Milky Way.
Dana S. Balser, Trey V. Wenger
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Observations of the Galaxy NGC 3077 in the Narrow-Band [S II] and Hα Filters
Open Astronomy, 2011 We present observations of the H I tidal arm near a dwarf galaxy NGC 3077 (member of the M81 galaxy group) in the narrow-band [S II] and Hα filters. Observations were carried out in 2011 March with the 2 m RCC telescope at the NAO Rozhen, Bulgaria.
Andjelić M. +4 more
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FEBS Letters, EarlyView.The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi +6 more
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