Results 51 to 60 of about 1,843 (251)

Enrichment of the ISM by metal-rich droplets and the abundance bias in HII regions

open access: yes, 2007
We critically examine a scenario for the enrichment of the interstellar medium (ISM) in which supernova ejecta follow a long (10^8 yr) journey before falling back onto the galactic disk in the form of metal-rich ``droplets'', These droplets do not become fully mixed with the interstellar medium until they become photoionized in HII regions.
Stasinska, Grazyna   +3 more
openaire   +2 more sources

The Differences Between Neutral- and Ionized-Gas Metal Abundances in Local Star-Forming Galaxies with COS

open access: yes, 2011
The metallicity of galaxies and its evolution with redshift is of paramount importance for understanding galaxy formation. Abundances in the interstellar medium (ISM) are typically determined using emission-line spectroscopy of H ...
A. Aloisi   +4 more
core   +1 more source

Stellar abundances in the early galaxy and two r-process components [PDF]

open access: yes, 2000
We present quantitative predictions for the abundances of r-process elements in stars formed very early in the Galactic history using a phenomenological two-component r-process model based on the ^(129)I and ^(182)Hf inventory in the early solar system ...
Wasserburg, G. J.   +3 more
core   +1 more source

Intelligent Maintenance Review for Robots: Multimodal Information, Deep Diagnosis and Embodied Artificial Intelligence

open access: yesAdvanced Robotics Research, EarlyView.
This review maps the methods to monitor robots’ health by fusing vibration, sound, control signals, vision, force, and oil information with artificial intelligence. It identifies deep learning, transfer learning, digital twins, and physics‐informed models as key methodological pathways enabling earlier diagnosis, safer human–robot collaboration, and ...
Yuting Qiao   +6 more
wiley   +1 more source

Enrichment of the ISM by metal-rich droplets and the abundance bias in H regions [PDF]

open access: yes, 2007
We critically examine a scenario for the enrichment of the interstellar medium (ISM) in which supernova ejecta follow a long (10⁸ yr) journey before falling back onto the galactic disk in the form of metal-rich “droplets”, These droplets do not become ...
GUILLERMO TENORIO TAGLE   +1 more
core  

Adult Sex Ratio as a Demographic Feedback Linking Mating Systems, Parental Care, and Evolution

open access: yesAdvanced Science, EarlyView.
Breeding systems are some of the most diverse social behavior, and our team is investigation the evolutionary causes of this diversity. This review summarises our research carried out at the University of Bath. We argue that demographic components of wild populations, especially the adult sex ratio, plays a key role driving breeding system variation ...
Tamás Székely, Oscar G. Miranda
wiley   +1 more source

The cosmic-ray contribution to galactic abundances of the light elements: Interpretation of GCR LiBeB abundance measurements from ACE/CRIS [PDF]

open access: yes, 2001
Inelastic collisions between the galactic cosmic rays (GCRs) and the interstellar medium (ISM) are responsible for producing essentially all of the light elements Li, Be, and B (LiBeB) observed in the cosmic rays.
Binns, W. R.   +15 more
core   +1 more source

Nanozymes for Advanced Hemoglobin‐Based Oxygen Carriers: Applications in Blood Substitution, Wound Healing, Antitumor Therapy, and Beyond

open access: yesAdvanced Science, EarlyView.
This review explores how hemoglobin‐based oxygen carriers (HBOCs) combined with nanozymes create multifunctional materials that deliver oxygen while maintaining redox homeostasis. Beyond artificial blood substitutes, these constructs enable wound healing with light‐triggered oxygen release, cancer therapy through enhanced oxygenation and reactive ...
Despoina Douka   +4 more
wiley   +1 more source

The chemical evolution carousel of spiral galaxies: a 3D view of ISM metallicity with PHANGS-MUSE and TYPHOON

open access: yes, 2019
The spatial distribution of the interstellar medium oxygen abundance is the key to understanding how efficiently metals synthesized in massive stars can be redistributed across a galaxy.
Ho, I-Ting (6908360)
core   +2 more sources

Herschel Observations Reveal Anomalous Molecular Abundances toward the Galactic Center [PDF]

open access: yes, 2013
We report the Herschel detections of hydrogen fluoride (HF) and para-water (p-H_(2)O) in gas intercepting the sight lines to two well-studied molecular clouds in the vicinity of the Sgr A complex: G–0.02–0.07 (the "+50 km s^(–1) cloud") and G–0.13–0.08 ...
Lis, D. C.   +9 more
core   +1 more source

Home - About - Disclaimer - Privacy