Results 111 to 120 of about 282,415 (218)

Economic Analysis of a Water Truck for Feedyard Dust Suppression [PDF]

Dust created in feedyards can adversely affect cattle performance. Dust suppression can be accomplished by moistening pen surfaces with traveling gun(s) sprinklers, solid-set sprinklers, and water trucks.
Amosson, Stephen H., Marek, Thomas H., Bretz, Fran E., Warminski, Patrick L.   +3 more
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[Concert Poster: Dust Congress]

, 2007
Poster/flyer advertising a concert by Dust Congress, Glossary and Sarah Reddington on April 29, 2007, at Hailey's Club in Denton, TX. Poster shows a hand drawn line drawing of a beached whale and lists titles of Dust Congress songs: Midnight @ the ...

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Dual Sources of S2 Observed in Comet 67P: Insights from Comparing ROSINA Measurements and Laboratory Simulations

The Planetary Science Journal
Hydrogen sulfide (H _2 S) is the fifth most abundant molecule observed in the coma of comet 67P/Churyumov–Gerasimenko (67P). Prior to its incorporation into cometary materials, H _2 S likely underwent ultraviolet (UV) radiation exposure, which is thought
Ahmed Mahjoub, Robert Hodyss, Kathrin Altwegg, Edith Fayolle, Mathieu Choukroun   +4 more
doaj   +1 more source

The Distant Activity of Long-period Comet C/2023 A3 (Tsuchinshan-ATLAS)

The Astrophysical Journal
We present broadband CCD observations of the long-period comet C/2023 A3 (Tsuchinshan–ATLAS) obtained between 2023 March and July, when its heliocentric distance decreased from 7.25 to 5.91 au.
Yingqi Wu, Jianchun Shi, Man-to Hui, Xian Shi, F. Li, Y. Yuan   +5 more
doaj   +1 more source

Water isotopes and hydronium in the evolving coma of 67P

Astronomy & Astrophysics
Context. Cometary isotopes preserve key information about the early Solar System and its presolar heritage. Rosetta’s long-term in situ observations of comet 67P/Churyumov–Gerasimenko offered the first opportunity to examine isotopic variability within a
Müller D. R., Altwegg K., Bonny R. F., Combi M., De Keyser J., Doriot A. C., Fuselier S. A., Hänni N., Rubin M., Wampfler S. F.   +9 more
doaj   +1 more source

Evolution of the dust coma in comet 67P/Churyumov-Gerasimenko before the 2009 perihelion

, 2011
Context. Comet 67P/Churyumov-Gerasimenko is the main target of ESA’s Rosetta mission and will be encountered in May 2014. Because the spacecraft will orbit the comet nucleus before and after release of the lander Philae, it is necessary to know the ...
R. Schulz, Tozzi, G. P., P. Patriarchi, L. Kolokolova, Boehnhardt, H., Schulz, R., Vincent, J., Licandro, J., Stüwe, J., Patriarchi, P., Kolokolova, L., Tozzi, G., H. Boehnhardt, J. Licandro, J. Stüwe, J.-B. Vincent, Vincent, J.-B., G. P. Tozzi   +17 more
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The Volatile Composition and Activity Evolution of Main-belt Comet 358P/PANSTARRS

The Planetary Science Journal
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.
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 Ye   +19 more
doaj   +1 more source

Optical and Near-infrared Spectroscopy of the Outbursting Comet 12P/Pons-Brooks

The Astrophysical Journal
We present optical and near-infrared (NIR) observations of the outbursting, Halley-type comet 12P/Pons-Brooks (12P). Three NIR spectra were obtained during two outbursts in 2023 October and November, with the 3 m Infrared Telescope Facility and the ...
Ruining Zhao, Bin Yang, Michael S. P. Kelley, Silvia Protopapa, Aigen Li, Yang Huang, Jifeng Liu   +6 more
doaj   +1 more source

Brightness Behavior of Distant Oort Cloud Comets

The Planetary Science Journal
Dynamically new comets provide important insights into the conditions of the presolar nebula and its evolution, as they are believed to have experienced minimal solar heating before their discovery.
Carrie E. Holt, Matthew M. Knight, Michael S. P. Kelley, Tim Lister, Quanzhi Ye, Colin Snodgrass, Cyrielle Opitom, Rosita Kokotanekova, Megan E. Schwamb, Matthew M. Dobson, Michele T. Bannister, Marco Micheli, Stefanie N. Milam, Derek C. Richardson, The LCO Outbursting Objects Key (LOOK) Project, Edward Gomez, Joseph P. Chatelain, Sarah Greenstreet   +17 more
doaj   +1 more source

The activity characteristics and mechanisms of long-period comets

Earth and Planetary Physics
Comets are small celestial bodies orbiting around the Sun. They are remnants left over from the formation of the solar system; their interiors store original material of the planetary disk within the solar system. They are thus "fossils" for studying the
YingQi Wu, JianChun Shi, Man-To Hui, Xian Shi   +3 more
doaj   +1 more source