Results 81 to 90 of about 8,519,684 (295)

New Zealand regions, 1986-2001: Population geography [PDF]

open access: yes, 2005
This paper is primarily concerned with the spatial aspects of population, namely with: (i) patterns of settlement (urban, rural) and attendant population size variations by region, (ii) changes over time between rural and urban areas at a Regional ...
Lindop, J.   +3 more
core  

SIRIUS: Identifying Metal-poor Stars Enriched by a Single Supernova in a Dwarf Galaxy Cosmological Zoom-in Simulation Resolving Individual Massive Stars

open access: yesThe Astrophysical Journal Letters
Metal-poor stars enriched by a single supernova (mono-enriched stars) are direct proof (and provide valuable probes) of supernova nucleosynthesis. Photometric and spectroscopic observations have shown that metal-poor stars have a wide variety of chemical
Yutaka Hirai   +4 more
doaj   +1 more source

Magnetic Braking during Direct Collapse Black Hole Formation

open access: yesThe Astrophysical Journal Letters, 2023
Magnetic fields are expected to be efficiently amplified during the formation of the first massive black holes via the small-scale dynamo and in the presence of strong accretion shocks occurring during gravitational collapse.
Muhammad A. Latif   +1 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS 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

GW231123 Formation from Population III Stars: Isolated Binary Evolution

open access: yesThe Astrophysical Journal
GW231123 is a merger of two black holes (BHs) with estimated masses exceeding 100  M _⊙ , making them the most massive BHs discovered to date via gravitational-wave (GW) observations.
Ataru Tanikawa   +4 more
doaj   +1 more source

Effect of Population III Multiplicity on Dark Star Formation

open access: yes, 2011
16 pages, 11 figures, to appear in ...
Stacy, Athena   +3 more
openaire   +5 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

A Global Semianalytic Model of the First Stars and Galaxies Including Dark Matter Halo Merger Histories

open access: yesThe Astrophysical Journal
We present a new self-consistent semianalytic model of the first stars and galaxies to explore the high-redshift ( z ≥ 15) Population III (PopIII) and metal-enriched star formation histories.
Colton R. Feathers   +3 more
doaj   +1 more source

Dark-matter-powered Population III evolution: Lifetimes, rotation, and quasi-homogeneity in massive stars

open access: yesAstronomy & Astrophysics
Population III stars supplied the first light and metals in the Universe, setting the pace of re-ionisation and early chemical enrichment. In dense halos, their evolution can be strongly influenced by the energy released when weakly interacting massive ...
Pauchet Anaïs, Nandal Devesh
doaj   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

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