Results 111 to 120 of about 20,346,263 (306)
On the spectrum of H II regions
, 1979 It is demonstrated that the validity of present models of H II regions is not well established. It is clear that simple models (and the usual formulas involving line ratios) are unable to provide a correct interpretation of the nebular spectrum.
Manfroid, Jean, J. Manfroid
core +2 more sources
Molecular clumps towards compact H II regions
, 2019 To better understand how the H II regions can affect their surrounding molecular clouds we have studied the molecular distribution towards three compact H II regions associated with IRAS sources (08140-3559, 09014-4736, and 09026-4842) by means of the ...
Gomez, Mercedes Nieves +3 more
core +1 more source
Properties of H II region populations in galaxies. I - The first-ranked H II regions
The Astrophysical Journal, 1988 H-alpha photometry of the brightest H II regions in 95 nearby spiral and irregular galaxies has been analyzed in order to study the dependence of the H II region populations on the properties of their parent galaxies. It is found that the brightest H II regions in Magellanic irregular galaxies are about 50 times brighter than those in early-type ...
openaire +1 more source
Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers
FEBS Letters, EarlyView.Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui +4 more
wiley +1 more source
FEBS Letters, EarlyView.Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil +3 more
wiley +1 more source
Expanding shells of neutral hydrogen around compact H II regions
, 2003 By comparing radial velocities of radio-bright compact H II regions with their H I absorption spectra, we have discovered expanding shells of neutral hydrogen around them. These shells are revealed by absorption of the radio continuum emission from the H
Kerton, Charles, Kothes, Roland
core
Fluorescence of [Fe II] in H II regions
, 1999 A study of [Fe II] lines at various positions within the H II regions M42 and M43 is presented. The relative intensities of selected optical [Fe II] lines are shown to be correlated with the intensity of the apparent nebular continuous spectrum. Since the continuum of H II regions is known to be mostly stellar radiation scattered by dust intermixed ...
openaire +2 more sources
FEBS Letters, EarlyView.Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise +5 more
wiley +1 more source
Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein
FEBS Letters, EarlyView.Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux +7 more
wiley +1 more source
Smaller is better: nanobodies meet NMR
FEBS Letters, EarlyView.Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley +1 more source