Results 61 to 70 of about 306,823 (323)
The role and implications of mammalian cellular circadian entrainment
FEBS Letters, EarlyView.At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley +1 more source
Journal of Degraded and Mining Lands ManagementThe Karimunjawa National Park area has various coastal resources and ecosystems, such as mangrove forests, seagrass, and coral reefs, which provide a habitat for several vital organisms.
Suryanti Suryanti +3 more
doaj +1 more source
Black Hole Hyperaccretion in Collapsars: A Review
Universe, 2022 The collapsar model is widely accepted as one of the standard scenarios for gamma-ray bursts (GRBs). In the massive collapsar scenario, the core will collapse to a black hole (BH) surrounded by a temporary hyperaccretion disk with a very high accretion ...
Yun-Feng Wei, Tong Liu
doaj +1 more source
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XII. Reverberation Mapping Results for 15 PG Quasars from a Long-duration High-cadence Campaign [PDF]
, 2021 Chen Hu +17 more
openalex +1 more source
A Solution to the Protostellar Accretion Problem
, 2005 Accretion rates of order 10^-8 M_\odot/yr are observed in young protostars of approximately a solar mass with evidence of circumstellar disks. The accretion rate is significantly lower for protostars of smaller mass, approximately proportional to the ...
Alexei Kritsuk +9 more
core +2 more sources
Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10
FEBS Letters, EarlyView.Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang +8 more
wiley +1 more source
Possible Wormhole Candidates in Active Galactic Nuclei
Universe, 2020 The hypothesis is considered that the active galactic nuclei (AGNs) are wormhole (WH) mouths rather than supermassive black holes (SMBHs). We study the difference in the physical properties of such objects from those of AGNs with SMBH, as well as the the
Mikhail Piotrovich +3 more
doaj +1 more source
The slimming effect of advection on black-hole accretion flows
, 2016 At super-Eddington rates accretion flows onto black holes have been described as slim (aspect ratio $H/R \lesssim 1$) or thick (H/R >1) discs, also known as tori or (Polish) doughnuts. The relation between the two descriptions has never been established,
Abramowicz, M. A. +4 more
core +3 more sources
Accretion disk instabilities [PDF]
International Astronomical Union Colloquium, 1986 In this article we discuss two instabilities of stationary accretion disks which lead to an understanding of observed light variations in accretion disk systems, the dwarf novae and the rapid burster MXB 17030-335. The accretion disks in these systems avoid instability at the cost of stationarity and perform stable cycles in which sudden changes of the
openaire +1 more source
Wind accretion in binary stars — II. Accretion rates [PDF]
Monthly Notices of the Royal Astronomical Society, 1996 13 pages, mn style, 5 figures, to be published by ...
Theuns, T. +2 more
openaire +2 more sources