Results 51 to 60 of about 312,980 (227)

DDX21 Enhances Radiosensitivity in Head and Neck Squamous Cell Carcinoma by Suppressing MK2‐Mediated DNA Damage Response

open access: yesAdvanced Science, EarlyView.
DDX21 suppresses MK2 activation by directly inhibiting Thr334 phosphorylation in a p38‐independent manner, thereby impairing DNA damage response. Clinically, patients with well‐differentiated tumors exhibiting high DDX21 expression are more likely to benefit from adjuvant radiotherapy, whereas those with low DDX21 levels are predisposed to ...
Tianru Yang   +8 more
wiley   +1 more source

Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS

open access: yesThe Astrophysical Journal Letters
We present high-angular-resolution observations of the third known interstellar interloper, 3I/ATLAS, from the Hubble Space Telescope. The object is clearly active at 3.8 au preperihelion, showing dust emitted from the hot, Sun-facing side of the nucleus
David Jewitt   +4 more
doaj   +1 more source

Evaluation of the genotoxicity of some standart and eco-friendly detergents with Vicia faba

open access: yesCaryologia, 2021
The increasing use of detergents as a result of rapid increase of population and irregular industrialization has a big role in the environmental pollution.
Özlem Aksoy, Aylin Horozal
doaj   +1 more source

Singularities in mass-loaded MHD flow: The cometary bow shock [PDF]

open access: yes, 1991
We present a one-dimensional model of the mass-loading of the solar wind by cometary ions which predicts a singularity in the mass-loaded flow at M = 2. Further, a subshock occurs when the flow speed reaches M almost-equal-to 1.15.
A. J. Coates   +5 more
core   +1 more source

The Rich Chemistry of Ionized Methanol With Sulfur Dioxide: Pathways to Prebiotic and Elusive Species in Earth's Atmosphere and Space

open access: yesChemistry – A European Journal, EarlyView.
The reaction between the methanol radical cation and sulfur dioxide is remarkably fast and forms several ionic and neutral products (HOSOH+, CH2OSO+, CH2OH+, CH2O, H2O, HSO2). The chemistry goes beyond simple proton or hydrogen transfer, revealing a close interaction between the two species, relevant to atmospheric and astrochemical environments where ...
Mauro Satta   +3 more
wiley   +1 more source

Evaluation of genetic damage induced by glyphosate isopropylamine salt using Tradescantia bioassays

open access: yesGenetics and Molecular Biology, 2011
Glyphosate is noted for being non-toxic in fishes, birds and mammals (including humans). Nevertheless, the degree of genotoxicity is seriously controversial.
Carlos Alvarez-Moya   +5 more
doaj  

The Large Smooth Patch on Comet 9P/Tempel 1: Remnant of a Recent Past Event

open access: yesThe Planetary Science Journal
We present a comprehensive reassessment of the region containing the large smooth patch on comet 9P/Tempel 1, leveraging data from the Deep Impact and Stardust-NExT missions, an updated stereophotoclinometry-based shape model, and numerical simulations ...
J. L. Rizos   +4 more
doaj   +1 more source

Detection of comet nuclei at large heliocentric distances [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1992
The largest long-period comets which have passed perihelion during the past half-century should still be observable. Fourteen candidate comets with well-determined orbits are presented, including data on their absolute magnitudes, distances and predicted positions in the sky.
M. E. Bailey, J. E. Chambers, G. Hahn
openaire   +1 more source

Visualizing Specific Tubulin Isotypes and Pathogenic Variants in Cellular Microtubule Arrays

open access: yesCytoskeleton, EarlyView.
ABSTRACT Eukaryotic cells depend on dynamic microtubule arrays to execute a wide range of functions vital for life. These microtubule filaments are formed through the polymerization of α/β‐tubulin proteins, which can be generated from numerous tubulin genes, or isotypes.
Sareen Fiaz   +2 more
wiley   +1 more source

Postperihelion Coma Composition of the Interstellar Comet 3I/ATLAS from Optical Spectroscopy

open access: yesThe Astrophysical Journal Letters
We present multiepoch optical spectroscopy of the interstellar comet 3I/ATLAS obtained between 2025 December and 2026 January (heliocentric distances of 1.8–3.3 au), yielding postperihelion production rates and mixing ratios for CN, C _3 , C _2 , CH, and
Ruining Zhao   +6 more
doaj   +1 more source

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