Results 11 to 20 of about 6,312,097 (300)

Enrichment Law of Hazardous Chemicals Enrichment under Dangerous Chemical Environment of Coal Mining

open access: yesChemical Engineering Transactions, 2018
During the process of coal mining, the CH4 produced by the coal will be released in the workspace. With the movement of the working face, the overlying strata will be moved or destroyed, resulting in the continuous development of mining cracks and thus ...
Xiaohua Jin, Beifang Gu
doaj   +2 more sources

Chemical enrichment in LINERs from MaNGA

open access: yesAstronomy & Astrophysics
Context. Chemical abundance radial gradients provide key information on how the processes that affect chemical enrichment of the gas-phase interstellar medium (ISM) act at different galaxy scales. In the past decades, though there has been an increase in
Pérez-Díaz Borja   +5 more
doaj   +2 more sources

Chemical enrichment of isolated relic galaxy Mrk1216

open access: yesPublications of the Astronomical Society of Australia
In this study, we investigate the chemical enrichment and structural evolution of the isolated elliptical relic galaxy Mrk1216 through X-ray observations. As a red-nugget relic, Mrk1216 provides a rare window into the early Universe, owing to its minimal
ERDİM, Muhammed Kıyami   +2 more
core   +4 more sources

Simulations of Cosmic Chemical Enrichment [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
16 pages, 20 figures.
Kobayashi, C., Springel, V., White, S.
openaire   +5 more sources

Planetary Nebulae as Sources of Chemical Enrichment of the Galaxy

open access: yesFrontiers in Astronomy and Space Sciences, 2022
During the late asymptotic giant branch (AGB) phase of stellar evolution, the element carbon is created through the triple-α nuclear reaction. This is followed by the synthesis of other heavy elements via neutron capture in the core and the dredge-up of ...
Sun Kwok, Sun Kwok
doaj   +1 more source

Chemical substructures that enrich for biological activity [PDF]

open access: yesBioinformatics, 2008
Abstract Motivation: Certain chemical substructures are present in many drugs. This has led to the claim of ‘privileged’ substructures which are predisposed to bioactivity. Because bias in screening library construction could explain this phenomenon, the existence of privilege has been controversial. Results: Using diverse
Justin Klekota, Frederick P. Roth
openaire   +5 more sources

Star formation and chemical enrichment in protoclusters

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We examine star formation and chemical enrichment in protoclusters (PCs) using cosmological zoom-in hydrodynamic simulations. We find that the total star formation rate (SFR) in all PC ($\gt 10^{14.4}\, h^{-1}$ M⊙) reaches $\gt 10^4\, \mathrm{M}_\odot \mathrm{yr}^{-1}$ at z = 3, equivalent to the observed PCs.
Keita Fukushima   +2 more
openaire   +3 more sources

Study of the Influence of Dynamic and Static Capillary Forces on Production in Low-Permeability Reservoirs

open access: yesEnergies, 2023
Low-permeability reservoirs have strong heterogeneity, and the production prediction based on traditional seepage model is not accurate enough. The dynamic capillary-force seepage model can characterize the dynamic heterogeneity of seepage and more ...
Yuanzhang Zhang   +4 more
doaj   +1 more source

Chemical enrichment in the cluster of galaxies Hydra A [PDF]

open access: yesAstronomy & Astrophysics, 2008
A&A, in press. Corrected right panel of Fig.
Simionescu, A.   +6 more
openaire   +5 more sources

Chemical Enrichment in Groups and Clusters

open access: yes, 2022
As building blocks of dust, rocky planets, and even complex life, the chemical elements heavier than hydrogen (H) and helium (He) - called "metals" in astronomy - play an essential role in our Universe and its evolution. Up to Fe and Ni, these metals are known to be created by stars and stellar remnants via nuclear fusion and to be ejected into their ...
Mernier, François, Biffi, Veronica
openaire   +2 more sources

Home - About - Disclaimer - Privacy