Results 101 to 110 of about 151,766 (346)

Evidence for a correlation between mass accretion rates onto young stars and the mass of their protoplanetary disks [PDF]

open access: yes, 2016
A relation between the mass accretion rate onto the central young star and the mass of the surrounding protoplanetary disk has long been theoretically predicted and observationally sought.
C. Manara   +17 more
semanticscholar   +1 more source

Ergothioneine supplementation improves pup phenotype and survival in a murine model of spinal muscular atrophy

open access: yesFEBS Letters, EarlyView.
Spinal muscular atrophy (SMA) is a genetic disease affecting motor neurons. Individuals with SMA experience mitochondrial dysfunction and oxidative stress. The aim of the study was to investigate the effect of an antioxidant and neuroprotective substance, ergothioneine (ERGO), on an SMNΔ7 mouse model of SMA.
Francesca Cadile   +8 more
wiley   +1 more source

Estuary Changes of Cipunagara and Cimanuk River Using Landsat Imagery Spatial Analysis

open access: yesBulletin of the Marine Geology, 2020
The north coastal Java located in the West Java, especially in Cirebon, Indramayu, and Subang, occurs loss and forming new land by abrasion and accretion processes.
Wawan Hendriawan Nur   +3 more
doaj   +1 more source

Regulation of black-hole accretion by a disk wind during a violent outburst of V404 Cygni [PDF]

open access: yesNature, 2016
A sustained, neutral wind from the outer accretion disk is observed in the transient black hole V404 Cygni during a violent outburst; this unusual wind, which expands at one per cent of the speed of light and triggers a nebular phase once accretion drops
T. Muñoz-Darias   +18 more
semanticscholar   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Accretion disc particle accretion in major merger simulations [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
A recent approach to simulating localized feedback from active galactic nuclei by Power et al. (2011) uses an accretion disc particle to represent both the black hole and its accretion disc. We have extrapolated and adapted this approach to simulations of Milky Way-sized galaxy mergers containing black holes and explored the impact of the various ...
Wurster, James Howard   +1 more
openaire   +3 more sources

Electrical characteristics of an energised conductor under various weather conditions

open access: yesHigh Voltage, 2017
When a transmission line is subjected to adverse weather conditions, rain drops or ice can be formed on its surface, leading to discharge phenomena known as corona.
Fanghui Yin   +2 more
doaj   +1 more source

On the orbital evolution of supermassive black hole binaries with circumbinary accretion discs [PDF]

open access: yes, 2017
Gaseous circumbinary accretion discs provide a promising mechanism to facilitate the mergers of supermassive black holes (SMBHs) in galactic nuclei. We measure the torques exerted on accreting SMBH binaries, using 2D, isothermal, moving-mesh, viscous ...
Yi-Lei Tang, A. MacFadyen, Z. Haiman
semanticscholar   +1 more source

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

open access: yesFEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

Hydrodynamics of Accretion Columns [PDF]

open access: yesAstrophysics and Space Science, 1987
AbstractA detailed understanding of how the infalling matter in accretion columns is decelerated is essential for the calculation of the emitted radiation. On neutron stars, the deceleration takes place mainly by the interaction of the plasma with radiation, at least for the high-luminosity sources.
H. Ruder, K. Wolf, H. Herold
openaire   +4 more sources

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