Results 71 to 80 of about 305,897 (326)

Wind accretion in binary stars — II. Accretion rates [PDF]

open access: yesMonthly 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

A Solution to the Protostellar Accretion Problem

open access: yes, 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

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Massive star formation by accretion [PDF]

open access: yesAstronomy & Astrophysics, 2015
Massive stars likely form by accretion and the evolutionary track of an accreting forming star corresponds to what is called the birthline in the HR diagram. The shape of this birthline is quite sensitive to the evolution of the entropy in the accreting star.
Haemmerlé Lionel   +4 more
openaire   +3 more sources

The Accretion Disc Particle Method for Simulations of Black Hole Feeding and Feedback

open access: yes, 2010
Black holes grow by accreting matter from their surroundings. However, angular momentum provides an efficient natural barrier to accretion and so only the lowest angular momentum material will be available to feed the black holes.
Andrew King   +41 more
core   +1 more source

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

The Role of Gravity in Producing Power-Law Mass Functions [PDF]

open access: yes, 2018
Numerical simulations of star formation have found that a power-law mass function can develop at high masses. In a previous paper, we employed isothermal simulations which created large numbers of sinks over a large range in masses to show that the power
Ballesteros-Paredes, Javier   +3 more
core   +3 more sources

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

Multivariate analysis and modeling of shoreline changes using geospatial data

open access: yesGeocarto International, 2023
Understanding of shoreline dynamics is essential to coastal management and the development of tropical archipelagic countries. Therefore, this study aims to analyze the factors affecting shoreline changes and their future predictions in Bengkayang ...
Moh. Dede   +5 more
doaj   +1 more source

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