Results 61 to 70 of about 4,605,994 (345)
Ionization Corrections For Low-Metallicity H II Regions and the Primordial Helium Abundance
, 1999 Helium and hydrogen recombination lines observed in low-metallicity, extragalactic H II regions provide the data used to infer the primordial helium mass fraction, Y_P.
Cid-Fernandes R. +13 more
core +3 more sources
FEBS Letters, EarlyView.Knowing how proteases recognise preferred substrates facilitates matching proteases to applications. The S1′ pocket of protease EA1 directs cleavage to the N‐terminal side of hydrophobic residues, particularly leucine. The S1′ pocket of thermolysin differs from EA's at only one position (leucine in place of phenylalanine), which decreases cleavage ...
Grant R. Broomfield +3 more
wiley +1 more source
H II Region Driven Galactic Bubbles And Their Relationship To The Galactic Magnetic Field [PDF]
, 2012 The relative alignments of mid-infrared traced Galactic bubbles are compared to the orientation of the mean Galactic magnetic field in the disk. The orientations of bubbles in the northern Galactic plane were measured and are consistent with random ...
Clemens, D. P., Pavel, Michael D.
core +2 more sources
FEBS Letters, EarlyView.C‐mannosylation is a unique form of protein glycosylation. In this study, we demonstrated that ADAMTS1 is C‐mannosylated at Trp562 and Trp565 in human testicular germ cell tumor NEC8 cells. We found that C‐mannosylation of ADAMTS1 is essential for its secretion, processing, enzymatic activity, and ability to promote vasculogenic mimicry. These findings
Takato Kobayashi +5 more
wiley +1 more source
FEBS Letters, EarlyView.The Arabidopsis mutants hls1 hlh1 and amp1 lamp1 exhibit pleiotropic developmental phenotypes. Although the functions of the causative genes remain unclear, they act in the same genetic pathway and are thought to generate non‐cell‐autonomous signals.
Takashi Nobusawa, Makoto Kusaba
wiley +1 more source
The Ionizing Spectra of Extremely Metal-poor O Stars: Constraints from the Only H ii Region in Leo P
The Astrophysical Journal, 2023 Metal-poor, star-forming dwarf galaxies produce extreme nebular emission and likely played a major role in cosmic reionization. Yet, determining their contribution to the high-redshift ionizing photon budget is hampered by the lack of observations ...
O. Grace Telford +3 more
doaj +1 more source
The Astrophysical JournalRadiation pressure is a key mechanism by which stellar feedback disrupts molecular clouds and drives H ii region expansion. This includes direct radiation pressure exerted by UV photons on dust grains, pressure associated with photoionization, and ...
Debosmita Pathak +29 more
doaj +1 more source
A Green Bank Telescope Survey of Large Galactic H ii Regions [PDF]
, 2017 As part of our ongoing H ii Region Discovery Survey (HRDS), we report the Green Bank Telescope detection of 148 new angularly large Galactic H ii regions in radio recombination line (RRL) emission.
L. Anderson +5 more
semanticscholar +1 more source
Signatures of inflow motion in cores of massive star formation: Potential collapse candidates
, 2007 Using the IRAM 30 m telescope, a mapping survey in optically thick and thin lines was performed towards 46 high mass star-forming regions. The sample includes UC H{\sc ii} precursors and UC H{\sc ii} regions.
Brand J. +8 more
core +1 more source
FEBS Letters, EarlyView.Spinal muscular atrophy (SMA) is a genetic disease affecting motor neurons. Individuals with SMA experience mitochondrial dysfunction and oxidative stress. The aim of the study was to investigate the effect of an antioxidant and neuroprotective substance, ergothioneine (ERGO), on an SMNΔ7 mouse model of SMA.
Francesca Cadile +8 more
wiley +1 more source