Results 121 to 130 of about 786,932 (316)

Dark Matter Distinguished by Skewed Microlensing in the “Dragon Arc”

open access: yesThe Astrophysical Journal Letters
Many microlensed stars discovered by JWST closely follow the winding critical curve of A370 along the “Dragon Arc” with m _AB  > 26.5, which we show comprises asymptotic giant branch stars microlensed by the observed level of diffuse cluster stars ...
Tom Broadhurst   +21 more
doaj   +1 more source

Gravitational Lensing by Rotating Wormholes [PDF]

open access: yes, 2017
In this paper the deflection angle of light by a rotating Teo wormhole spacetime is calculated in the weak limit approximation. We mainly focus on the weak deflection angle by revealing the gravitational lensing as a partially global topological effect ...
K. Jusufi, A. Ovgun
semanticscholar   +1 more source

Contributions of arid climate and hydrothermal fluid flow on sedimentation in saline‐alkaline lakes: Insight from the Ibar intramontane basin (Southern Serbia)

open access: yesThe Depositional Record, EarlyView.
The article demonstrates that brine was central for the supply of Ca and B to the studied saline lake. The ion transport occurred probably by thermal springs, while contributions from surface waters cannot be excluded. However, the saturation and syndepositional precipitation of Ca borates were initiated by an arid climate through evaporation, while ...
Nevena Andrić‐Tomašević   +8 more
wiley   +1 more source

Gravitational Lensing — Models [PDF]

open access: yesSymposium - International Astronomical Union, 1986
Qualitative features of gravitational lensing are discussed in terms of a scalar framework based on Fermat's principle. The lensing action of galaxy-like models with spherical and elliptical mass distributions are described. The elliptical model has three distinct regimes of lensing, of which two correspond to lensing with three images and one with ...
openaire   +2 more sources

Containerless emulsification of acoustically levitated composite drop

open access: yesDroplet, EarlyView.
Emulsions are inherently thermodynamically unstable dispersions that are widely involved in food processing, cosmetic preparation, and drug delivery. The existing ultrasonic emulsification techniques mainly rely on the direct contact between the sonicator probe and liquids, which caused localized high temperature and pressure within the liquid and ...
Mengchen Cui   +8 more
wiley   +1 more source

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis   +5 more
wiley   +1 more source

Gravitational Lensing in Presence of Plasma: Strong Lens Systems, Black Hole Lensing and Shadow [PDF]

open access: yes, 2017
In this article, we present an overview of the new developments in problems of the plasma influence on the effects of gravitational lensing, complemented by pieces of new material and relevant discussions.
G. Bisnovatyi-Kogan, O. Tsupko
semanticscholar   +1 more source

From Policy to Practice: Unraveling Individual Uptake of Compressed Work Schedules

open access: yesHuman Resource Management, EarlyView.
ABSTRACT Compressed work schedules, like full‐time 4‐day weeks, are widely advocated as promising work–life flexibility policies and attractive alternatives to female part‐time work. Yet, individual characteristics and implementation factors associated with policy use are understudied.
Kristen du Bois   +3 more
wiley   +1 more source

Gravitational Lenses: Observations [PDF]

open access: yesSymposium - International Astronomical Union, 1986
The gravitational lens phenomenon is shown to be not uncommon. A search is now underway to find a larger number of examples, using the VLA to search for candidates, following up with optical observations to establish equality of redshifts in the images.
openaire   +2 more sources

Stratigraphy and geomorphology of Des‐Cubierta Cave (Pinilla del Valle, Madrid, Spain): Geological insights into a Neanderthal symbolic accumulation of large crania

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Des‐Cubierta Cave, part of the Calvero de la Higuera complex, is situated in the intramountainous upper valley of the Lozoya River within the Guadarrama Range. The cave's geological, palaeontological, and archaeological record reveals a complex history of sedimentary and anthropogenic processes spanning hundreds of thousands of years ...
David Manuel Martín‐Perea   +19 more
wiley   +1 more source

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