Results 31 to 40 of about 9,757 (190)

Grain charging in protoplanetary discs [PDF]

, 2011
Recent work identified a growth barrier for dust coagulation that originates in the electric repulsion between colliding particles. Depending on its charge state, dust material may have the potential to control key processes towards planet formation such
Bai, Balbus, Chiang, Desch, Draine, Epstein, Fleming, Fromang, Gressel, Hawley, Hayashi, Hughes, Igea, Ilgner, Ilgner, Ilgner, Koren, Lynden-Bell, M. Ilgner, Meakin, Minato, Muller, Okuzumi, Okuzumi, Okuzumi, Okuzumi, Okuzumi, Oppenheimer, Perez-Becker, Pringle, Sano, Sicilia-Aguilar, Takeuchi, Takeuchi, Umebayashi, Umebayashi   +35 more
core   +2 more sources

On the Ionisation Fraction in Protoplanetary Disks II: The Effect of Turbulent Mixing on Gas--phase Chemistry [PDF]

, 2005
We calculate the ionisation fraction in protostellar disk models using two different gas-phase chemical networks, and examine the effect of turbulent mixing by modelling the diffusion of chemical species vertically through the disk.
Balbus, Beckwith, Blaes, Carballido, Chiang, Fleming, Fromang, Gammie, Glassgold, Hawley, Hawley, Igea, Ilgner, Le Teuff, M. Ilgner, Matsumura, Muzerolle, Oppenheimer, Prosser, R. P. Nelson, Rawlings, Sano, Semenov, Wehrstedt, Wehrstedt, Willacy, Xie   +26 more
core   +5 more sources

Gortys and Milan. Milan and Gortys

Lanx, 2012
L’intervento focalizza gli inizi dell’esperienza archeologica “gortinia” dell’Università degli Studi di Milano, quando nel 2002 venne assegnata alla scrivente la direzione di un’indagine archeologica sull’acropoli della grande capitale provinciale; dal ...
Gemma Sena Chiesa
doaj   +1 more source

Wire mesh design [PDF]

, 2014
We present a computational approach for designing wire meshes, i.e., freeform surfaces composed of woven wires arranged in a regular grid. To facilitate shape exploration, we map material properties of wire meshes to the geometric model of Chebyshev nets.
Deng, Bailin, Garg, Akash, Grinspun, Eitan, Pauly, Mark, Sageman-Furnas, Andrew O., Wardetzky, Max, Yue, Yonghao   +6 more
core   +7 more sources

Motivational profiles and their relationships with basic psychological needs, academic performance, study strategies, self-esteem, and vitality in dental students in Chile [PDF]

, 2018
Purpose To determine dental students’ motivational profiles through a person-centred approach and to analyse the associations with the satisfaction of their basic psychological needs, study strategies, academic performance, self-esteem, and vitality ...
Cesar A. Orsini, Field, Geraldo, Jorge A. Tricio, Leon, Orsini, Rojas-Barahona, Ryan, Vivian I. Binnie   +8 more
core   +3 more sources

Magnetorotational instability in protoplanetary discs: The effect of dust grains [PDF]

, 2007
We investigate the linear growth and vertical structure of the MRI in protoplanetary discs when dust grains are well mixed with the gas over the entire disc thickness. All the grains have the same radius (a = 0.1, 1 or 3 micron) and constitute 1 % of the
Andrews, Balbus, Balbus, Blandford, Carballido, Consolmagno, Cowling, D'Alessio, Dullemond, Fromang, Gammie, Glassgold, Glassgold, Hayashi, Hayashi, Igea, Ilgner, Johnson, Kitamura, Knigl, Mark Wardle, Mathis, Matsumura, Morton, Nakagawa, Nakano, Nishi, Nomura, Norman, Oppenheimer, Ossenkopf, Raquel Salmeron, Salmeron, Salmeron, Salmeron, Sano, Sano, Semenov, Spitzer, Terquem, Turner, Umebayashi, Umebayashi, Van Dishoeck, Wardle, Wardle, Wardle, Wardle, Wardle, Weidenschilling   +49 more
core   +4 more sources

Hard X-ray flux from low-mass stars in the Cygnus OB2 Association

, 2009
Context. The Cygnus OB2 association, the central engine of the Cygnus X star-forming region, is the subject of an extensive INTEGRAL Key Project that will accumulate 6Ms of observations.
Aikawa, Albacete Colombo, Albacete Colombo, Alexander, Audard, Battaglia, Benz, Boella, Brown, Caramazza, Chabrier, De Becker, Dennis, E. Flaccomio, Favata, Feldman, Franciosini, Fromang, G. Micela, Glassgold, Glassgold, Güdel, Hanson, Harrison, Hudson, Hudson, Igea, Isola, J. J. Drake, Kashyap, Knödlseder, Kroupa, Kroupa, Krucker, Lin, Lin, M. Caramazza, Maggio, Massey, Matsumura, Muench, Osten, Pareschi, Pittard, Preibisch, Scalo, Veronig   +46 more
core   +1 more source

Molecular Hydrogen Emission from Protoplanetary Disks II. Effects of X-ray Irradiation and Dust Evolution [PDF]

, 2007
Detailed models for the density and temperature profiles of gas and dust in protoplanetary disks are constructed by taking into account X-ray and ultraviolet (UV) irradiation from a central T Tauri star, as well as dust size growth and settling toward ...
Aikawa Y., Brown A., Burton M. G., Costa V. M., Dullemond C. P., Dutrey A., H. Nomura, Imanishi K., Itoh Y., Itoh Y., Koyama K., Kozasa T., M. Tsujimoto, Mewe R., Mizuno H., Ossenkopf V., Pirronello V., Schmitt W., Storey P. J., Suttner G., T. J. Millar, Umebayashi T., Verner D. A., Wagenblast R., Weidenschilling S. J., Y. Aikawa, Y. Nakagawa   +26 more
core   +2 more sources

Atomic Diagnostics of X-ray Irradiated Protoplanetary Disks

, 2007
We study atomic line diagnostics of the inner regions of protoplanetary disks with our model of X-ray irradiated disk atmospheres which was previously used to predict observable levels of the NeII and NeIII fine-structure transitions at 12.81 and 15 ...
A. E. Glassgold, Aldrovandi S. M. V., Butler K., Finocchi F., J. R. Najita, Launay J. M., Millar T. J., Monteiro T. S., Nisini B., Pequignot D., Pequignot D., R. Meijerink, Spinoglio L., Umebayashi T.   +13 more
core   +1 more source

Electric charging of dust aggregates and its effect on dust coagulation in protoplanetary disks

, 2009
Mutual sticking of dust aggregates is the first step toward planetesimal formation in protoplanetary disks. In spite that the electric charging of dust particles is well recognized in some contexts, it has been largely ignored in the current modeling of ...
Blum, Chapman, Dominik, Dominik, Glassgold, Igea, Inutsuka, Israelachvili, Jackson, Konopka, Lin, Sano, Sano, Satoshi Okuzumi, Suyama, Tanaka, Turner, Umebayashi, Umebayashi, Umebayashi, Umebayashi, Wada, Wolk   +22 more
core   +1 more source