Results 41 to 50 of about 3,185 (131)

Modeling jet and outflow feedback during star cluster formation [PDF]

open access: yes, 2014
Powerful jets and outflows are launched from the protostellar disks around newborn stars. These outflows carry enough mass and momentum to transform the structure of their parent molecular cloud and to potentially control star formation itself.
Banerjee, Robi   +3 more
core   +2 more sources

Impact of Glaciers on Trophic Dynamics and Polyunsaturated Fat Accumulation in Southern Greenland Fjord Ecosystems

open access: yesGlobal Change Biology, Volume 31, Issue 1, January 2025.
Glacier melting alters algae production in fjords, impacting fish like Arctic char. Using isotopic tools, we found that in Southern Greenland fjords, where glaciers are rapidly retreating, Arctic char in glacier‐fed inner fjords grow larger, feed at a lower trophic level, and accumulate more nutritious molecules.
Grégoire Saboret   +7 more
wiley   +1 more source

On the Role of Disks in the Formation of Stellar Systems: A Numerical Parameter Study of Rapid Accretion

open access: yes, 2009
We study rapidly accreting, gravitationally unstable disks with a series of global, three dimensional, numerical experiments using the code ORION. In this paper we conduct a numerical parameter study focused on protostellar disks, and show that one can ...
Banerjee   +42 more
core   +1 more source

Growth and Survival Outcomes for Immature Gopher Tortoises in Contrasting Habitats: A Test of Drone‐Based Habitat Assessment

open access: yesEcology and Evolution, Volume 14, Issue 11, November 2024.
The gopher tortoise is an ecosystem engineer threatened by loss and deficient management of its pineland habitats in the southeastern United States. To aid management, we investigated the factors governing growth of immature gopher tortoises and explored use of drone‐based imagery as a habitat assessment tool.
Leyna R. Stemle   +5 more
wiley   +1 more source

The influence of the turbulent perturbation scale on prestellar core fragmentation and disk formation

open access: yes, 2011
The collapse of weakly turbulent prestellar cores is a critical stage in the process of star formation. Being highly non-linear and stochastic, the outcome of collapse can only be explored theoretically by performing large ensembles of numerical ...
A. P. Whitworth   +60 more
core   +1 more source

Optical Parametric Amplification in Crossed Fabry‐Perot Cavities

open access: yesLaser &Photonics Reviews, Volume 18, Issue 9, September 2024.
A Crossed‐Fabry‐Perot‐Cavity OPA (XOPA) scheme is proposed and experimentally demonstrated. The pump‐to‐signal conversion efficiency of up to 56.28% and gain bandwidth of 120 nm are simultaneously achieved with signal pulses at 808 nm and pump 532 nm.
Meizhi Sun   +13 more
wiley   +1 more source

The Equilibrium Structure of Prolate Magnetized Molecular Cores

open access: yes, 2009
The structure of molecular cloud cores supported by thermal pressure and a poloidal magnetic field is reinvestigated in the magnetohydrostatic and axisymmetric approximation.
Basu   +18 more
core   +1 more source

Revisiting the ecology and evolution of burying beetle behavior (Staphylinidae: Silphinae)

open access: yesEcology and Evolution, Volume 14, Issue 8, August 2024.
Burying beetles of the genus Nicrophorus are becoming a model system for the evolution of parental care. Investigating fundamental processes in biology requires the ability to ground broad questions in species‐specific natural history. Here, we leverage a developing community of researchers who have contributed to a detailed knowledge of burying ...
Ahva L. Potticary   +15 more
wiley   +1 more source

Allogenic and autologous nondiluted serum eye drops—validation strategy compliant with good manufacturing practice

open access: yesTransfusion Medicine, Volume 34, Issue 4, Page 319-325, August 2024.
Abstract Background and aims Serum eye drops alleviate ocular symptoms of diseases such as sicca syndrome, or chronic graft‐versus‐host disease. This study was designed for good manufacturing practice validation of our standard manufacturing, storage and transport processes for both autologous and allogenic SEDs.
Frauke Dormann   +4 more
wiley   +1 more source

Simulations of protostellar collapse using multigroup radiation hydrodynamics. I. The first collapse

open access: yes, 2012
Radiative transfer plays a major role in the process of star formation. Many simulations of gravitational collapse of a cold gas cloud followed by the formation of a protostellar core use a grey treatment of radiative transfer coupled to the ...
B. Commerçon   +31 more
core   +3 more sources

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