Results 101 to 110 of about 259,126 (328)
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Revisit of 77 Clusters Candidates with Multiple Main Sequences using Gaia DR3
The Astronomical JournalGaia DR3 data provide the latest and full astrometric data for more than 1.5 billion sources, and these allow us to revisit the 77 special open cluster candidates collected from LISC star cluster catalog.
Jing Chen +4 more
doaj +1 more source
Not an open cluster after all: the NGC 6863 asterism in Aquila
, 2009 Shortly after birth, open clusters start dissolving; gradually losing stars into the surrounding star field. The time scale for complete disintegration depends both on their initial membership and location within the Galaxy.
Bica +44 more
core +1 more source
Spectrophotometry of 237 Stars in 7 Open Clusters
The Astronomical Journal, 1997 23 pages, LaTex (aaspp4), 6 tables, 4 in .tex mode; 2 as ADC-format data tables with their own readme file; 16 figures.
Clampitt, Lori, Burstein, David
openaire +2 more sources
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
PSR J1922+37: a 1.9 s Pulsar Discovered in the Direction of the Old Open Cluster NGC 6791
The Astrophysical Journal LettersMore than 300 pulsars have been discovered in Galactic globular clusters; however, none have been found in open clusters. Here we present results from a 20 hr survey of seven open clusters with the Five-hundred-meter Aperture Spherical radio Telescope ...
Xiao-Jin Liu +10 more
doaj +1 more source
Flare Stars as Age Indicators in Open Clusters [PDF]
Symposium - International Astronomical Union, 1990 A new set of isochrones derived from overshooting evolutionary models, allows one to give a homogeneous age determination for open clusters with solar chemical composition and in a range of age 4 107 ÷ 1.5 109 yr. In this context is derived an empirical new age calibration - absolute magnitude of the supposed brightest flare star in a cluster versus ...
openaire +1 more source
FEBS Letters, EarlyView.This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel +13 more
wiley +1 more source
Revisiting Open Clusters within 200 pc in the Solar Neighborhood with Gaia DR3
The Astronomical JournalIn this study, we develop a membership identification method and apply it for 30 open clusters (OCs) within 200 pc of the Sun using astrometric data of Gaia DR3.
Penghui Liu +5 more
doaj +1 more source
Search for and investigation of new stellar clusters using the data from huge stellar catalogues
, 2005 We present new automatic methods of search for star clusters using the data available in new huge stellar catalogues. Using 2MASS catalogue we have discovered over ten new open clusters in the region of Galaxy anticenter and determined their physical ...
Glushkova, Elena +2 more
core +1 more source