Results 91 to 100 of about 681,612 (216)

Rheological and Morphological Characterization of Acrylonitrile Butadiene Styrene (ABS)/Linear Low‐Density Polyethylene (LLDPE) Blends Containing Carbon Nanotubes

ChemistrySelect, Volume 11, Issue 8, 25 February 2026.
ABSTRACT Acrylonitrile butadiene styrene (ABS) is a widely used polymer in the automotive, electronics, and household appliance industries. Despite its extensive use, ABS suffers from low thermal stability, flammability, poor UV stability, and limited recyclability.
Mpho Phillip Motloung, Mokgaotsa Jonas Mochane, Kanono Comet Manesa   +2 more
wiley   +1 more source

The Volatile Composition and Activity Evolution of Main-belt Comet 358P/PANSTARRS

The Planetary Science Journal
Abstract We report the detection of water vapor associated with main-belt comet 358P/PANSTARRS on UT 2024 January 8–9 using the NIRSPEC instrument on board JWST. We derive a water production rate of Q
Henry H. Hsieh, John W. Noonan, Michael S. P. Kelley, Dennis Bodewits, Jana Pittichová, Audrey Thirouin, Marco Micheli, Matthew M. Knight, Michele T. Bannister, Colin O. Chandler, Carrie E. Holt, Matthew J. Hopkins, Yaeji Kim, Nicholas A. Moskovitz, William J. Oldroyd, Jack Patterson, Scott S. Sheppard, Nicole Tan, Chadwick A. Trujillo, Quanzhi 泉志 Ye 叶   +19 more
openaire   +3 more sources

The Volatile Composition of Comet C/2017 E4 (Lovejoy) before its Disruption, as Revealed by High-resolution Infrared Spectroscopy with iSHELL at the NASA/IRTF

Astronomical Journal, 2018
In 2017 April, we acquired comprehensive high-resolution spectra of newly discovered comet C/2017 E4 (Lovejoy) as it approached perihelion, and before its disintegration.
S. Faggi, G. Villanueva, M. Mumma, L. Paganini   +3 more
semanticscholar   +1 more source

On the Early Thermal Processing of Planetesimals during and after the Giant Planet Instability

The Planetary Science Journal
Born as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets’ dynamical instability in the early stages of our solar system’s history.
Anastasios Gkotsinas, David Nesvorný, Aurélie Guilbert-Lepoutre, Sean N. Raymond, Nathan Kaib   +4 more
doaj   +1 more source

Comprehensive Analyses of the Strongly Carbon-chain Depleted Comets in Lowell Observatory’s Narrowband Photometry Database

The Planetary Science Journal
We present measurements, analyses, and results for the 17 strongly carbon-chain depleted comets in Lowell Observatory’s narrowband photometry database.
Allison N. Bair, David G. Schleicher
doaj   +1 more source

The Ice Chemistry in Comets and Planet-forming Disks: Statistical Comparison of CH3OH, H2CO, and NH3 Abundance Ratios

The Astrophysical Journal Letters
Comets are frozen remnants of our solar system’s formation, and comparing their chemical composition to that of planet-forming systems can reveal crucial insights about our origins, potentially answering one of the most challenging questions in planetary
Manuela Lippi, Linda Podio, Claudio Codella, Sara Faggi, Marta De Simone, Geronimo L. Villanueva, Michael J. Mumma, Cecilia Ceccarelli   +7 more
doaj   +1 more source

Hyper-volatiles in Comet C/2010 G2 (Hill)

, 2013
We performed high-dispersion near-infrared spectroscopic observations of comet C/2010 G2 (Hill) at 2.5 AU from the Sun using NIRSPEC (R ~ 2.5x10^4) at the Keck II telescope on UT 2012 Jan 9 and 10. The comet had been in outburst. Over the two nights of our observations, prominent emission lines of CH4 and C2H6 along with weaker emission lines of H2O ...
Kawakita, Hideyo, Dello Russo, N., Vervack, R. J. J., Kobayashi, H., DiSanti, M. A., Opitom, Cyrielle, Jehin, Emmanuel, Weaver, H. A.   +7 more
openaire   +1 more source

The Extreme Activity in Comet Hale–Bopp (C/1995 O1): Investigations of Extensive Narrowband Photoelectric Photometry

The Planetary Science Journal
Conventional narrowband photoelectric photometry of Comet Hale–Bopp (1995 O1) was obtained on 99 nights from mid-1995 to early-2000, yielding gas and dust production rates over an unprecedented range of time and distance. The appearance of Hale–Bopp (H-B)
David G. Schleicher, Peter V. Birch, Tony L. Farnham, Allison N. Bair   +3 more
doaj   +1 more source

Thermal Evolution of the Nucleus of the Comet 67P for 120 Years: Numerical Simulations

Open Astronomy, 2018
The purpose of this paper is to estimate to what temperatures and to what depth the outer layers of the cometary nuclei are heated for several dozen revolutions around the Sun, and what changes in the composition of the volatiles occur in this case. This
Rusol Andrey V., Dorofeeva Vera A.
doaj   +1 more source

Chemical Composition and Evaluation of the Biological Properties of the Essential Oil of the Dietary Phytochemical Lippia citriodora

Molecules, 2018
The aim of the study was to characterize the chemical composition and biological properties of the essential oil from the plant Lippia citriodora grown in Greece.
Eleni Fitsiou, Gregoria Mitropoulou, Katerina Spyridopoulou, Manolis Vamvakias, Haido Bardouki, Alex Galanis, Katerina Chlichlia, Yiannis Kourkoutas, Mihalis Ι. Panayiotidis, Aglaia Pappa   +9 more
doaj   +1 more source