Results 21 to 30 of about 531,799 (287)

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

Comet: An internet based platform for education in measurement [PDF]

open access: yes, 2005
The project COMET provides a multimedia training package for metrology and measurement. The package is developed by a consortium of 10 institutes from 7 European countries.
Regtien, Paulus P.L.   +4 more
core   +3 more sources

Very Large Telescope Observations of Interstellar Comet 3I/ATLAS. II. From Quiescence to Glow: Dramatic Rise of Ni i Emission and Incipient CN Outgassing at Large Heliocentric Distances

open access: yesThe Astrophysical Journal Letters
We report Very Large Telescope spectroscopy of the interstellar comet 3I/Asteroid Terrestrial-impact Last Alert System (C/2025 N1), from r _h  ≃ 4.4 to 2.85 au, using X-Shooter (300–550 nm, R  ≃ 3000) and the Ultraviolet and Visual Echelle Spectrograph ...
Rohan Rahatgaonkar   +27 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

open access: yesFEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno   +3 more
wiley   +1 more source

Spectral Characteristics of Interstellar Object 3I/ATLAS from SOAR Observations

open access: yesThe Astrophysical Journal Letters
Interstellar objects (ISOs) provide unique insights into the building blocks and conditions of extrasolar planetary systems. The newly discovered object, 3I/ATLAS (C/2025 N1), represents the third known ISO after 1I/’Oumuamua and 2I/Borisov.
Thomas H. Puzia   +4 more
doaj   +1 more source

Predictions of the solar wind interaction with Comet Grigg-Skjellerup [PDF]

open access: yes, 1992
The planned encounter of the Giotto spacecraft with comet Grigg-Skjellerup on 10th July 1992 promises to extend our knowledge of the solar wind interaction with comets substantially.
Johnstone, AD   +2 more
core  

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 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

Lignin Mimicking Protein Methylation Augments the Efficacy of FOLFOX Chemotherapy by Anchoring Thymidylate Synthase

open access: yesAdvanced Materials, EarlyView.
Lignin‐mimicking protein methylation can enhance the efficacy and mitigate the toxicity of the classic FOLFOX chemotherapy regimen. ABSTRACT FOLFOX has served as the standard chemotherapy regimen for advanced stages, specifically in the treatment of pancreatic, colorectal, and bladder cancers.
Shiyao Song   +14 more
wiley   +1 more source

Activity of Halley-type Comets 12P/Pons–Brooks and 13P/Olbers from SOHO/SWAN Observations

open access: yesThe Planetary Science Journal
The Solar Wind ANisotropies (SWAN) all-sky hydrogen Ly α camera on the Solar and Heliosphere Observatory (SOHO) observed the hydrogen coma of Halley-type comet (HTC) 12P/Pons–Brooks from SOHO’s halo orbit around L1 throughout its 2023–2024 apparition ...
M. R. Combi   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy