Results 51 to 60 of about 7,767,873 (255)

Research of effect of initial data displacement on results of calculation of orbits evolution for short-period comets

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
We study the problems of stability of solution and the effect of initial data errors on the results of calculation of orbits evolution for short-period comets on the time intervals within the order of 100 years.
A. A. Zausaev
doaj   +1 more source

Exploreneos. Viii. Dormant short-period comets in the near-Earth asteroid population [PDF]

, 2015
We perform a search for dormant comets, asteroidal objects of cometary origin, in the near-Earth asteroid (NEA) population based on dynamical and physical considerations.
Mommert, M., Emery, J.P., Bottke, W., Bottke, W. F., Thomas, C. A., Mueller, M., Thomas, C.A., Harris, A. W., Müller, M., Trilling, D. E., Emery, J. P., Delbo, M., Smith, H. A., Fazio, G., Hora, J. L.   +14 more
core   +2 more sources

Austrocedrus from the Late Cretaceous of Antarctica and its implications for the early evolution of southern cypresses (Callitroideae, Cupressaceae)

American Journal of Botany, EarlyView.
Abstract Premise The modern distribution of the southern cypresses, Callitroideae (Cupressaceae), reflects a classic Gondwanan distribution. The initial diversification of Callitroideae is estimated to have occurred during the Cretaceous, yet fossils from this period are rare, hampering our understanding of its early evolutionary history.
Kelly C. Pfeiler, Kelly K. S. Matsunaga, Ana Andruchow‐Colombo, Ari Iglesias, Selena Y. Smith, Brian A. Atkinson   +5 more
wiley   +1 more source

The Evolution of Activity and Chemical Composition in Rosetta’s Comet Targets across Multiple Apparitions: Complications for CS2 as the CS Parent in Comet Nuclei

The Planetary Science Journal, 2023
Jupiter-family comets are ephemeral small bodies injected into the inner solar system from the Kuiper Belt, doomed to either sublimate all their volatiles and become inert or violently shatter from the activity.
John W. Noonan, Joel Wm. Parker, Walter M. Harris, Steven Bromley, Mohammad Saki, Youssef Moulane, Davide Farnocchia, Marco Micheli, Jian-Yang Li, Kathleen E. Mandt, Kumar Venkataramani, Dennis Bodewits   +11 more
doaj   +1 more source

Statistical and numerical studies of the orbital evolution of short-period comets [PDF]

International Astronomical Union Colloquium, 1985
AbstractThe evolutionary paths connecting cometary reservoirs in the outer solar system and the population of periodic comets involve stellar and planetary perturbations. Close planetary encounters play a special role, making the dynamical evolution slow or fast depending on the orbital elements of the comet at various stages of the process.
A. Carusi, G. B. Valsecchi
openaire   +1 more source

SOHO/SWAN Observations of Short-period Spacecraft Target Comets [PDF]

, 2011
SWAN, the Solar Wind ANisotropies all-sky hydrogen Ly_ camera on the Solar and Heliospheric Observatory spacecraft that makes all-sky images of interplanetary neutral hydrogen, has an ongoing campaign to make special observations of comets, both short ...
Lee, Y., Combi, M. R., J.-L. Bertaux, J. T. T. Mäkinen, M. R. Combi, Bertaux, Jean-Loup, Patel, T. S., T. S. Patel, Bertaux, J. L., Mäkinen, J. T. T., Y. Lee, E. Quémerais, Quémerais, E., Quémerais, Eric   +13 more
core   +1 more source

Progress report on new epilepsy treatments: A summary of the Eighteenth Eilat Conference on New Antiepileptic Drugs and Devices (EILAT XVIII). I. Treatments in preclinical and early clinical development

Epilepsia, EarlyView.
Abstract Over the last 34 years, the Eilat Conference on New Antiepileptic Drugs and Devices has provided an interactive forum for stakeholders to discuss investigational and recently licensed treatments for seizures and epilepsy. The Eighteenth Eilat Conference on New Antiepileptic Drugs and Devices (EILAT XVIII) took place in Madrid, Spain, on May 3 ...
Meir Bialer, Cecilie Johannessen Landmark, Matthias J. Koepp, Emilio Perucca, Piero Perucca, Torbjörn Tomson, H. Steve White, Elaine Wirrell   +7 more
wiley   +1 more source

Detection of OH Maser Emission in the 71 yr Periodic Comet 12P/Pons-Brooks Using the 40 m Thai National Radio Telescope

The Planetary Science Journal
Although the optical cometary database is extensive, the radio database is limited. The 18 cm OH maser observations of comets allow us to determine (i) the production rate of OH ( Q _OH ) and (ii) the water expansion velocity, for each comet.
Nobuyuki Sakai, Saran Poshyachinda, Koichiro Sugiyama, Wiphu Rujopakarn, Boonrucksar Soonthornthum, Apichat Leckngam, Busaba H. Kramer, Phrudth Jaroenjittichai, Bannawit Pimpanuwat, Dan Singwong, Kitipoom Kanjana, Nikom Prasert, Songklod Punyawarin, Spiro George Sarris, Teep Chairin, Kamorn Bandudej, Natthaphong Kruekoch, Nattapong Duangrit, Chalunthon Nuchur, Haseng Sani, Nattawit Chanwedchasart, Pathit Chatuphot, Prachayapan Jiraya, Saharat Sathipjan, Adirake Eakwan, Chayanin Larkaew, Settasak Naewchan, Pichate Pha-Kham, Siritida Duangbuppha, Natee PongTeerarat, Nutdanai Hantankul, Thodsawat Chaichana, Attapon Bunwong, Lalida Tantiparimongkol, Wijitra Potakum, Panupan Doomcome, Anya Poonnawatt, Nonwarit Borvornsareepirom, Thanadon Paksin, Warakorn Noisapung, Pathorn Sathapornvajana, Naphat Yawilerng, Nonnadda Silamai, Ornjira Krataithong, Thita Dilokthanakul, Kritsada Angkaew, Nattawut Chaiwongwan, Sothaya Prathumsub, Jittimat Khanchaiyapoom, Hideyuki Kobayashi, Yu-An Chen, Nawamin Intrarat, Gundolf Wieching, Ewan Barr, Jason Wu, Niclas Esser, Tobias Winchen, Pablo de Vicente   +57 more
doaj   +1 more source

Multi‐omics–driven precision medicine

iMeta, EarlyView.
Multi‐omics‐driven precision medicine (MODPM) provides a multiscale, continuously learnable framework that integrates genomics, epigenomics, transcriptomics, proteomics, metabolomics, microbiome profiles, and clinical data. Powered by artificial intelligence and foundation models, MODPM enables cross‐modal representation learning, contextual modeling ...
Huibo Li, Zhe Zhao, Yifan Zhang, Yao Ma, Gaofei Hu, Min Zeng, Zhanqun Yang, Zixuan Zhao, Xin Zhou, Wei Hu, Yuxuan Sun, Meng Su, Jun Li, Matthew Whiteman, Wei Fu, Chao Zhong, Lemin Zheng, Long Chen, Hairong Lv, Rongsheng Zhao, Yi Zhun Zhu   +20 more
wiley   +1 more source

Activity Analysis on 68P/Klemola and 78P/Gehrels 2 in 2018–2020 Perihelion Passage

The Astronomical Journal
We performed secular monitoring broadband photometric observations on Jupiter Family Comets (JFCs) 68P/Klemola and 78P/Gehrels 2 from 2018 November to 2020 March with the Yaoan High Precision Telescope.
Ruiqi Xu, Jianchun Shi, Yuehua Ma, Yingqi Xin, Fan Li, Ye Yuan   +5 more
doaj   +1 more source