Results 31 to 40 of about 337,815 (176)

Wide-field polarization imaging and numerical modeling of the coma and tail of comet C/2023 A3 (Tsuchinshan-ATLAS)

open access: yesAstronomy & Astrophysics
Context. Imaging polarimetry enables the spatially resolved investigation of cometary dust properties across different morphological structures. While cometary comae have been studied thoroughly in the pertinent literature, cometary tails have remained ...
Arnaut M.   +5 more
doaj   +1 more source

A Look at Eight Outbursts of Comet 7P/Pons–Winnecke

open access: yesThe Planetary Science Journal
Cometary outbursts may be used as a means to infer the physical processes occurring on cometary nuclei. To that end, we studied eight outbursts of comet 7P/Pons–Winnecke identified between 2021 June 3 and August 31. The data analyzed consisted of optical
Ky Huynh   +8 more
doaj   +1 more source

Optical Radiation Pressure: Resonant Mechanical Excitation of Thin Films

open access: yesAnnalen der Physik, Volume 538, Issue 10, October 2026.
The modulation of a laser beam generates a modulated radiation pressure force acting on a thin film. A resonant response is observed, leading to a net average thinning of the film. ABSTRACT Optical radiation pressure was directly observed for the first time more than a century ago.
Janine Emile, Olivier Emile
wiley   +1 more source

Concerning a new theory of Type I comet tails [PDF]

open access: yes, 1965
Enhanced density plasma confinement hypothesis for formation of Type I comet tails following interaction with solar ...
Ness, N. F., Donn, B. D.
core  

Cellular Responses to Tartrazine and Sulfanilic Acid Exposure in BEAS‐2B Cells: Viability, Apoptosis, and DNA Damage

open access: yesJournal of Applied Toxicology, Volume 46, Issue 10, Page 3446-3454, October 2026.
ABSTRACT Tartrazine is a synthetic azo dye widely used in food, pharmaceutical, and cosmetic products, resulting in extensive human exposure, while its toxicity and that of its primary metabolite, sulfanilic acid, remain controversial. Considering the reported association of tartrazine with hypersensitivity and allergic‐like reactions, human bronchial ...
Merve Baysal   +5 more
wiley   +1 more source

Stochastic modeling for the COMET-assay [PDF]

open access: yes, 2003
We present a stochastic model for single cell gel electrophoresis (COMET-assay) data. Essential is the use of point process structures, renewal theory and reduction to intensity histograms for further data ...
Hösel, V.   +4 more
core   +1 more source

Postperihelion Cometary Activity on the Outer Main-belt Asteroid 2005 XR132

open access: yesThe Planetary Science Journal
We report comet-like activity on the outer main-belt asteroid 2005 XR _132 discovered by the Lulin One-meter Telescope in early 2021 April. A series of follow-up observations were triggered to characterize the morphology and brightness variation of 2005 ...
Yu-Chi Cheng   +11 more
doaj   +1 more source

Renal Tubular Epithelial Cells Senescence Induced by 1‐Aminopyrene Activates Fibroblast via BRD4 Driven Senescence‐Associated Secretory Phenotype Signaling

open access: yesJournal of Biochemical and Molecular Toxicology, Volume 40, Issue 10, October 2026.
1‐AP induced genomic instability and senescence in RTECs sustaining BRD4‐dependent SAPS transcription and paracrine fibroblast activation. Targeting BRD4 may treat pollution‐related CKD. ABSTRACT Epidemiological evidence links environmental pollution to chronic kidney disease (CKD).
Atul Katarkar   +6 more
wiley   +1 more source

Three-dimensional architecture of actin filaments in Listeria monocytogenes comet tails [PDF]

open access: yes, 2013
The intracellular bacterial pathogen Listeria monocytogenes is capable of remodelling the actin cytoskeleton of its host cells such that "comet tails" are assembled powering its movement within cells and enabling cell-to-cell spread.
Jasnin, M.   +7 more
core   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

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