Results 21 to 30 of about 40,461 (205)

Classical T Tauri-like Outflow Activity in the Brown Dwarf Mass Regime [PDF]

, 2009
Over the last number of years spectroscopic studies have strongly supported the assertion that protostellar accretion and outflow activity persists to the lowest masses. In this paper we present the results of our latest investigation of brown dwarf (BD)
Bacciotti, F., Podio, L., Randich, S., Ray, T. P., Whelan, E. T.   +4 more
core   +2 more sources

Brown dwarf disks with ALMA [PDF]

, 2014
We present ALMA continuum and spectral line data at 0.89 mm and 3.2 mm for three disks surrounding young brown dwarfs and very low mass stars in the Taurus star forming region.
de Gregorio-Monsalvo, I., Isella, A., Natta, A., Ricci, L., Scholz, A., Testi, L.   +5 more
core   +3 more sources

A Mathematical Model for Investigating the Effect of Reaction Temperature and Hydrogen Amount on the Catalyst Yield during Propylene Polymerization [PDF]

Kemija u Industriji, 2019
In this study, the effect of reaction temperature and hydrogen amount, as the most effective process variables on the Ziegler-Natta catalysts yield during propylene polymerization, was investigated with the aid of a validated mathematical model.
Gholam Hossain Varshouee, Amir Heydarinasab, Ali Vaziri, Seyed Mehdi Ghafelebashi Zarand   +3 more
doaj   +1 more source

Shadows, gaps, and ring-like structures in protoplanetary disks [PDF]

, 2011
We study the structure of passively heated disks around T Tauri and Herbig Ae stars, and present a vectorized Monte Carlo dust radiative transfer model of protoplanetary disks. The vectorization provides a speed up factor of 100 when compared to a scalar
Acke, Alexander, Alexander, Asplund, Beckwith, Bertout, Bjorkman, Bouwman, Brown, Brown, Calvet, Charnoz, Chiang, Cieza, Draine, Draine, Dullemond, Dullemond, Dullemond, Dullemond, Dullemond, Dullemond, D’Alessio, Edgar, Eisner, Espaillat, F. Heymann, Fitzpatrick, Fleck, Fukagawa, Furlan, Furlan, Gail, Hayashi, Huelamo, Ida, Isella, Ivezic, Kalas, Kama, Kemper, Kenyon, Kessler-Silacci, Klahr, Krijt, Krügel, Lagrange, Lommen, Lommen, Lubow, Lucy, Malfait, Mayama, McCaughrean, Millan-Gabet, Min, Min, Miroshnichenko, Mizuno, Mulders, Muzerolle, Najita, Najita, Natta, Natta, Nomura, Oliveira, Olofsson, Ozernoy, Pascucci, Pinte, Pinte, Pinte, Pontoppidan, Pontoppidan, R. Siebenmorgen, Ratzka, Ricci, Robitaille, Robitaille, Schegerer, Schegerer, Schisano, Siebenmorgen, Siebenmorgen, Sterzik, Strom, Testi, Thalmann, Tielens, Tutukov, van Boekel, van den Ancker, Verhoeff, Vinkovic, Visser, Voshchinikov, Walker, Waters, Watson, Watson, Whitney, Witt, Wolf, Zubko   +104 more
core   +2 more sources

Transition Metal–(μ-Cl)–Aluminum Bonding in α-Olefin and Diene Chemistry

Molecules, 2022
Olefin and diene transformations, catalyzed by organoaluminum-activated metal complexes, are widely used in synthetic organic chemistry and form the basis of major petrochemical processes.
Ilya E. Nifant’ev, Ildar I. Salakhov, Pavel V. Ivchenko   +2 more
doaj   +1 more source

CARMA interferometric observations of 2MASS J044427+2512: the first spatially resolved observations of thermal emission of a brown dwarf disk [PDF]

, 2013
We present CARMA 1.3 mm continuum data of the disk surrounding the young brown dwarf 2MASS J044427+2512 in the Taurus molecular cloud. The high angular resolution of the CARMA observations (0.16 arcsec) allows us to spatially resolve for the first time ...
Carpenter, J. M., Isella, A., Ricci, L., Testi, L.   +3 more
core   +2 more sources

Unravelling the mechanotransduction pathways in Alzheimer’s disease

Journal of Biological Engineering, 2023
Alzheimer’s disease (AD) represents one of the most common and debilitating neurodegenerative disorders. By the end of 2040, AD patients might reach 11.2 million in the USA, around 70% higher than 2022, with severe consequences on the society. As now, we
Francesca Donnaloja, Emma Limonta, Christian Mancosu, Francesco Morandi, Lucia Boeri, Diego Albani, Manuela Teresa Raimondi   +6 more
doaj   +1 more source

Addition of a second alcohol in magnesium ethoxide synthesis as a way to vary the pore architecture of Ziegler-Natta catalysts [PDF]

Polyolefins Journal, 2015
In Ziegler-Natta olefin polymerization, the pore architecture of catalysts plays a crucial role in catalytic performances and polymer properties. While the type of preparation routes (such as chemical reaction and solution precipitation) greatly affects ...
Toshiaki Funako, Patchanee Chammingkwan, Toshiaki Taniike, Minoru Terano   +3 more
doaj   +1 more source

Membrane-binding peptides for extracellular vesicles on-chip analysis

Journal of Extracellular Vesicles, 2020
Small extracellular vesicles (sEVs) present fairly distinctive lipid membrane features in the extracellular environment. These include high curvature, lipid-packing defects and a relative abundance in lipids such as phosphatidylserine and ceramide.
Alessandro Gori, Alessandro Romanato, Greta Bergamaschi, Alessandro Strada, Paola Gagni, Roberto Frigerio, Dario Brambilla, Riccardo Vago, Silvia Galbiati, Silvia Picciolini, Marzia Bedoni, George G. Daaboul, Marcella Chiari, Marina Cretich   +13 more
doaj   +1 more source

The circumstellar disc around the Herbig AeBe star HD169142 [PDF]

, 2005
We present 7 mm and 3.5 cm wavelength continuum observations toward the Herbig AeBe star HD169142 performed with the Very Large Array (VLA) with an angular resolution of ~1".
Acke, Acke, Bessell, D'Alessio, D'Alessio, D'Alessio, D'Alessio, Dent, Dominik, Dullemond, Dullemond, Dullemond, Dunkin, G. Anglada, Greaves, Habart, Herbig, Hernández, Hog, J. M. Torrelles, Jayawardhana, Johnson, Kuhn, M. Osorio, Malfait, Mannings, Meeus, N. Calvet, Natta, Natta, Osorio, Shakura, Siess, Strom, Sylvester, Toomre, W. R. F. Dent, Weidenschilling   +37 more
core   +1 more source