Results 41 to 50 of about 13,165 (147)
Formation and destruction of dust grains in circumstellar regions [PDF]
Symposium - International Astronomical Union, 1987 The existence of circumstellar dust in late-type stars is connected with stellar pulsations since periodic shocks accompanying pulsations seem to be the most probable mechanism of the gas density increase needed for condensation of dust particles in outer layers of the stellar atmosphere.
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Dust destruction by the supernova remnant forward shock in a turbulent interstellar medium
Astronomy & AstrophysicsContext. While supernova remnants (SNRs) have been observed to produce up to 1 M⊙ of dust, the amount of dust destroyed by the forward shock is poorly constrained, raising the question of whether they are net dust producers or destroyers. Aims.
Scheffler Tassilo +5 more
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The Astrophysical Journal, 2023 The chemical inventory of protoplanetary midplanes is the basis for forming planetesimals. Among them, solid-state reactions based on CO/CO _2 toward molecular complexity on interstellar dust grains have been studied in theoretical and laboratory work ...
K.-J. Chuang +7 more
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CFD-DEM numerical study on coal dust pollution law of coal transfer point in underground coal mine
Meikuang Anquan, 2021 To grasp the relation between dust pollution and air flow velocity distribution at a transfer point of coalbelt, taking No.2 transfer point of Mengdong Energy Mindong No.1 mine 00 working face as the research object, using CFD-DEM, finite element method,
TONG Linquan, XU Yang, WANG Xuetao, YANG Hanbin, MA Kui
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Dust Destruction by Drift-induced Sputtering in Active Galactic Nuclei [PDF]
The Astrophysical Journal, 2020 Abstract Recent mid-infrared high spatial resolution observations have revealed that active galactic nuclei (AGNs) may host a polar dust region with the size of several pc, and such dust may be carried by radiation from the central engine. The polar dust emission often exhibits very weak or absence of the silicate 10 μm emission feature.
Ryo Tazaki, Kohei Ichikawa
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Dust Destruction in the Cygnus Loop Supernova Remnant [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractThe Cygnus Loop supernova remnant serves as an excellent laboratory for the study of radiative and non-radiative shocks with speeds in the 150–450 km s−1 range. We present results on shock-excited emission and dust destruction based on Spitzer Space Telescope observations of two well-studied regions in the remnant, (i) a non-radiative shock ...
Ravi Sankrit +3 more
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The Astrophysical JournalOne possible explanation for the presence of very large grains (VLGs) larger than 10 μ m in the inner envelope of intermediate-mass Class 0/I young stellar objects is their migration from the protostellar disk via outflows. To assess whether RATD hinders
Nguyen Chau Giang +4 more
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Tracking Dusty Cloud Crushed by a Hot Flow
UniverseThe destructionof clouds by strong shocks and hot winds is the key process responsible for the transporting of metals and dust from the ISM to the ICM/IGM, and establishing the multiphase structure in and around galaxies.
Svyatoslav Dedikov, Evgenii Vasiliev
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High Voltage, 2022 A large amount of metal dust is often generated during production and operation of Gas Insulated Switchgear/Gas‐Insulated Transmission Line, and insulating fibres are very easy to mix in during assembly.
Ruixue Liang +4 more
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PATHOGEN DESTRUCTION IN SEWAGE SLUDGE BY COMPOSTING AND CEMENT KILN DUST BLENDING [PDF]
Journal of Soil Sciences and Agricultural Engineering, 2003 An experiment for pathogen removal from a raw sewage sludge (55) by composting and addition of cement kiln dust (CKD) was carried out at the Experimental Farm of the Faculty of Agriculture, Suez Canal University, Ismailia Governorate.
A. Zayed,
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