Results 11 to 20 of about 466 (130)
Carbon Speciation and Solubility in Silicate Melts
Geophysical Monograph Series, Page 179-194., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Natalia Solomatova +2 more
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Volatile-rich comets ejected early on during Solar System formation
Astronomy & Astrophysics, 2022 Context. Comet C/2016 R2 PanSTARRS (hereafter C/2016 R2) presents an unusually high N2/CO abundance ratio, as well as a heavy depletion in H2O, making it the only known comet of its kind. Understanding its dynamical history is therefore of essential importance as it would allow us to gain a clearer understanding of the evolution of planetesimal ...
Sarah E. Anderson +4 more
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CO and Other Volatiles in Distantly Active Comets
Publications of the Astronomical Society of the Pacific, 2017 The activity of most comets near the Sun is dominated by the sublimation of frozen water, the most abundant ice in comets. Some comets, however, are active well beyond the water-ice sublimation limit of ~3 au. Three bodies dominate the observational record and modeling efforts for distantly active comets: the long-period comet C/1995 O1 (Hale-Bopp ...
M. Womack, G. Sarid, K. Wierzchos
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The Volatile Carbon-to-oxygen Ratio as a Tracer for the Formation Locations of Interstellar Comets
The Planetary Science Journal, 2022 Abstract Based on the occurrence rates implied by the discoveries of 1I/‘Oumuamua and 2I/Borisov, the forthcoming Rubin Observatory Legacy Survey of Space and Time (LSST) should detect ≥one interstellar object every year. We advocate for future measurements of the production rates of H2O, CO2, and CO in these objects to estimate their ...
Darryl Z. Seligman +15 more
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Physical Properties of Frozen Volatiles—Their Relevance to the Study of Comet Nuclei [PDF]
International Astronomical Union Colloquium, 1989 AbstractThe structural and thermodynamical properties of water ice and ice mixtures containing CO, CO2, CH4, and NH3 are thought to be important for the evolution of cometary nuclei. Based on recent laboratory studies performed by several groups, an overview is given of the properties of various ices condensed at low temperatures and of their evolution
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Journal of Applied Polymer Science, EarlyView.This study systematically maps polyolefin dilution dynamics using a homologous series of n‐alkanes. Integrating gravimetric sorption, subsequent controlled desorption, and oscillatory rheometry establishes a precise framework to analyze reduction in viscosity at least for polymer diluent mixtures with polymer concentration > 35% and diluent ...
Ernst Georg Viehböck +6 more
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Chemistry – 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
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InfoScience, EarlyView.With the advancement of 6G communications, high‐precision radar, and advanced imaging technologies, there is a growing demand for compact, high‐performance light sources capable of generating high‐frequency radio waves (millimeter‐wave and terahertz waves). This article systematically introduces how to efficiently generate these high‐frequency waves on
Jianfeng Xiong +8 more
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Journal of Applied Toxicology, EarlyView.ABSTRACT Children, as a particularly vulnerable group, are more susceptible to these mutagens due to their developing immune systems, higher physiological vulnerability, and increased exposure through behaviors like outdoor play and hand‐to‐mouth activities. This review aims to investigate the relationship between these environmental exposures, genetic
Thiago Guedes Pinto +7 more
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Anti‐inflammatory and cytotoxic properties of kānuka (Kunzea ericoides) subcritical water extract
Journal of Chemical Technology &Biotechnology, EarlyView.Abstract BACKGROUND Kānuka (Kunzea ericoides) is a medicinal plant native to New Zealand with numerous therapeutic benefits due to its rich bioactive profile. Although several in vitro studies have shown promising anti‐inflammatory activity, substantial evidence elucidating its underlying inflammatory regulatory mechanism and evaluating its cytotoxic ...
Indhuja Devadass +2 more
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