Results 161 to 170 of about 205,088 (284)
Environmental Microbiology Reports, Volume 17, Issue 2, April 2025.The quorum sensing regulated sRNA Lrs1 participates in the adaptation of Pseudomonas aeruginosa in low iron by downregulating the siderophore pyochelin, the Quorum Sensing system PQS, and its associated virulence factor phenazines. ABSTRACT Iron is an essential nutrient for microbial growth. The opportunistic pathogen Pseudomonas aeruginosa can survive
Dimitra Panagiotopoulou +7 more
wiley +1 more source
The Astrophysical JournalGas-phase metallicity gradients are a crucial element in understanding the chemical evolution of galaxies. We use the FOGGIE simulations to study the metallicity gradients (∇ Z ) of six Milky Way–like galaxies throughout their evolution.
Ayan Acharyya +9 more
doaj +1 more source
Stellar Abundances in Local Group Galaxies with the VLT [PDF]
arXiv, 2004 Here we describe some of our latest results from measuring detailed abundances in Local Group dwarf galaxies with VLT. Combining spectroscopic abundances with Colour-Magnitude diagrams allows the effective measurement of detailed chemical evolution with time in these galaxies.
arxiv
Lack of Evolution in the Iron Abundance in Clusters of Galaxies and Implications for the Global Star Formation Rate at High Redshift [PDF]
, 1997 R. F. Mushotzky, M. Loewenstein
openalex +1 more source
Review of asteroid, meteor, and meteorite‐type links
Meteoritics &Planetary Science, Volume 60, Issue 4, Page 928-973, April 2025.Abstract With the goal to determine the origin of our meteorites in the asteroid belt, video and photographic observations of meteors have now tracked 75 meteorite falls. Six years ago, there were just hints that different meteorite types arrived on different orbits, but now, the number of orbits (N) is high enough for distinct patterns to emerge.
Peter Jenniskens +1 more
wiley +1 more source
XMM Observations of Metal Abundances in Galaxy Clusters
Acta Polytechnica, 2011 The hot gas that fills the space between galaxies in clusters is rich in metals. Due to their large potential well, galaxy clusters accumulate metals over the whole history of the cluster, and retain important information on cluster formation and ...
L. Lovisari, S. Schindler, W. Kapferer
doaj
Abundances as Tracers of the Formation and Evolution of (Dwarf) Galaxies [PDF]
arXiv, 2004 This aims to be an overview of what detailed observations of individual stars in nearby dwarf galaxies may teach us about galaxy evolution. This includes some early results from the DART (Dwarf Abundances and Radial velocity Team) Large Programme at ESO.
arxiv
Chemical Abundance Calibrations for the Narrow-Line Region of Active Galaxies [PDF]
, 1998 Thaísa Storchi-Bergmann +3 more
openalex +1 more source
Plant Pathology, Volume 74, Issue 3, Page 605-640, April 2025.The literature cites many alternative hosts of Phytophthora erythroseptica. However, evidence of host status is often insufficient, thus a polyphasic approach (morphological, molecular, histological and pathogenicity) is required. ABSTRACT Most published studies of Phytophthora erythroseptica, the major causal agent of pink rot of potato, have focused ...
Ronika Thapa +4 more
wiley +1 more source
Two-process Model and Residual Abundance Analysis of the Milky Way Massive Satellites
The Astrophysical JournalThe “two-process model” is a promising technique for interpreting stellar chemical abundance data from large-scale surveys (e.g., the Sloan Digital Sky Survey IV/V and the Galactic Archeology with HERMES survey), enabling more quantitative empirical ...
Sten Hasselquist +6 more
doaj +1 more source