Results 51 to 60 of about 108,558 (304)

What drives the dust activity of comet 67P/Churyumov-Gerasimenko?

, 2015
We use the gravitational instability formation scenario of cometesimals to derive the aggregate size that can be released by the gas pressure from the nucleus of comet 67P/Churyumov-Gerasimenko for different heliocentric distances and different volatile ...
Blum, J., Gundlach, B., Keller, H. U., Skorov, Y. V.   +3 more
core   +1 more source

Pore evolution in interstellar ice analogues: simulating the effects of temperature increase [PDF]

, 2014
Context. The level of porosity of interstellar ices - largely comprised of amorphous solid water (ASW) - contains clues on the trapping capacity of other volatile species and determines the surface accessibility that is needed for solid state reactions ...
Bossa, J. -B., Cazaux, S., Linnartz, H., Tielens, A. G. G. M.   +3 more
core   +4 more sources

Surface-Enhanced Nitrate Photolysis on Ice [PDF]

The Journal of Physical Chemistry A, 2015
Heterogeneous nitrate photolysis is the trigger for many chemical processes occurring in the polar boundary layer and is widely believed to occur in a quasi-liquid layer (QLL) at the surface of ice. The dipole-forbidden character of the electronic transition relevant to boundary layer atmospheric chemistry and the small photolysis/photoproduct yields ...
Marcotte, G., Marchand, P., Pronovost, S., Ayotte, P., Laffon, C., Parent, P.   +5 more
openaire   +4 more sources

Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells

Molecular Oncology, EarlyView.
We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller, Susanne Ebner, Carmen Haselrieder, Julia K. Günther, Astrid Drasche, Sophie Strich, Chiara Volani, Andrea Medici, Aleksandar Nikolajevic, Alex Deltedesco, Johannes E. Sigmund, Michael J. Blumer, Martin Hermann, Johanna Vanacker, Gerald Brandacher, Eduard Stefan, Omar Torres‐Quesada, Jakob Troppmair   +17 more
wiley   +1 more source

Experimental Vapor Pressure Determination for C2H4, C2H6, CH3OH, CH4, CO, CO2, H2O, and N2 Molecules for Astrophysical Relevant Temperatures. Implications for the Presence of Volatiles in Kuiper Belt Objects and Trans-Neptunian Objects

The Astrophysical Journal
Vapor pressure is a relevant quantity that is necessary in order to improve the study of the atmosphere dynamics that take place within astrophysical scenarios.
C. Millán, R. Luna, M. Domingo, C. Santonja, M. Á. Satorre   +4 more
doaj   +1 more source

Impact of Silicon Content and Particle Size in Lithium-Ion Battery Anodes on Particulate Properties and Electrochemical Performance

Batteries, 2023
Silicon (Si) is considered a promising anode active material to enhance energy density of lithium-ion batteries. Many studies have focused on new structures and the electrochemical performance, but only a few investigated the particulate properties in ...
Jannes Müller, Peter Michalowski, Arno Kwade   +2 more
doaj   +1 more source

Cell surface interactome analysis identifies TSPAN4 as a negative regulator of PD‐L1 in melanoma

Molecular Oncology, EarlyView.
Using cell surface proximity biotinylation, we identified tetraspanin TSPAN4 within the PD‐L1 interactome of melanoma cells. TSPAN4 negatively regulates PD‐L1 expression and lateral mobility by limiting its interaction with CMTM6 and promoting PD‐L1 degradation.
Guus A. Franken, Andrea Abel Gutierrez, Imke van Rossum, Cornelia G. Spruijt, Michiel Vermeulen, Guido van Mierlo, Blanca Scheijen, Annemiek B. van Spriel   +7 more
wiley   +1 more source

History of Ceres’s Cold Traps Based on Refined Shape Models

The Planetary Science Journal
Permanently shadowed regions (PSRs) in the north polar region of Ceres have been previously mapped by the Dawn spacecraft. Putative ice deposits are found in some of these PSRs, whereas most PSRs host no bright deposits, which is thought to be due to ...
Norbert Schorghofer, Robert Gaskell, Erwan Mazarico, John Weirich   +3 more
doaj   +1 more source

Sieved mass and shape data from simulated fluvial transport of icy clasts in the Titan Tumbler

Data in Brief, 2022
Data in this article are related to the research article “Rapid rounding of icy clasts during simulated fluvial transport in the Titan Tumbler”. Whereas that research focused on low-temperature ice abrasion in the context of Saturn's moon Titan, the full
Anthony D. Maue, Joseph S. Levy, Devon M. Burr, Patrick R. Matulka, Erica Nathan   +4 more
doaj   +1 more source

Origin of volatiles in the Main Belt [PDF]

, 2007
We propose a scenario for the formation of the Main Belt in which asteroids incorporated icy particles formed in the outer Solar Nebula. We calculate the composition of icy planetesimals formed beyond a heliocentric distance of 5 AU in the nebula by ...
A'Hearn, Alibert, Alibert, Alibert, Alibert, Allamandola, Andreas, B. Carry, Britt, Bus, Busarev, C. Dumas, Carry, Cassen, Cellino, Chevrier, Chick, Ciesla, Clark, Clayton, Cyr, D. Hestroffer, Dotto, Dullemond, Durda, Durham, F. Selsis, Fanale, Farmer, Fegley, Fogg, Gautier, Gautier, Gibb, Gomes, Hardersen, Hersant, Hersant, Hilton, Hsieh, Hsieh, Irvine, Ivantsov, J. Horner, Jewitt, King, Kochetova, Kouchi, Krasinsky, Kress, Kuzmanoski, Lazzarin, Lebofsky, Lewis, Lide, Lodders, Lunine, Lupishko, Lupishko, Marchis, Marchis, Marchis, Matson, Mayer, McCord, Michel, Michel, Mousis, Mousis, Mousis, Mousis, Mousis, Mousis, Nesvorný, Novikov, O. Mousis, Owen, Pasek, Patashnick, Porco, Rivkin, Russell, Sekine, Shakura, Supulver, Thomas, U. Marboeuf, Veras, Vernazza, Veverka, Weidenschilling, Wilson, Y. Alibert   +92 more
core   +6 more sources