Results 81 to 90 of about 184,359 (287)

Toward a General Theory of Grain Alignment and Disruption by Radiative Torques and Magnetic Relaxation

The Astrophysical Journal
We generalize the magnetically enhanced radiative torque (MRAT) theory for astrophysical environments described by a dimensionless parameter U /( n _1 T _2 ) with U the radiation strength, n _1  =  n _H /(10 cm ^−3 ) the normalized hydrogen density, and ...
Thiem Hoang
doaj   +1 more source

Dust grain growth and the formation of the extremely primitive star SDSS J102915+172927

, 2014
Dust grains in low-metallicity star-forming regions may be responsible for the formation of the first low-mass stars. The minimal conditions to activate dust-induced fragmentation require the gas to be pre-enriched above a critical dust-to-gas mass ratio
Chiaki, Gen, Chieffi, Alessandro, Limongi, Marco, Nozawa, Takaya, Omukai, Kazuyuki, Schneider, Raffaella, Yoshida, Naoki   +6 more
core   +1 more source

Collisions of inhomogeneous pre-planetesimals [PDF]

, 2011
In the framework of the coagulation scenario, kilometre-sized planetesimals form by subsequent collisions of pre-planetesimals of sizes from centimetre to hundreds of metres.
Benz, Benz, Benz, Birnstiel, Blum, Blum, Brauer, Dullemond, Geretshauser, Geretshauser, Gingold, Grady, Güttler, Güttler, Herrmann, Jutzi, Jutzi, Libersky, Lucy, Monaghan, Monaghan, R. J. Geretshauser, R. Speith, Randles, Schäfer, Sirono, W. Kley, Weidenschilling, Zsom   +28 more
core   +1 more source

Oxygen Supply of Islets of Langerhans by Photosynthetically Active Microalgae in Bioprinted Co‐Cultures Maintains Their Function in a Hypoxic Environment

Advanced Healthcare Materials, EarlyView.
This study developed a bioprinted co‐culture system embedding rat pancreatic islets and Scenedesmus sp. microalgae spatially defined in close vicinity. Red light was found optimal to ensure microalgal photosynthesis while maintaining islet viability and functionality. A tailored co‐culture medium supported both cell types.
Finn Dani, Sarah Duin, Ashwini Rahul Akkineni, Susann Lehmann, Barbara Ludwig, Michael Kühl, Michael Gelinsky, Anja Lode   +7 more
wiley   +1 more source

A Clay-Based Geopolymer in Loess Soil Stabilization

Applied Sciences, 2020
Soil erosion has environmental and socioeconomic significances. Loess soils cover about 10% of the global land area. Most of these soils are subjected to increased land uses such as unpaved roads, which increase soil destruction and dust emission to the ...
Nadav Hanegbi, Itzhak Katra
doaj   +1 more source

Airborne 1O2 Delivery via a Superhydrophobic Dressing as a Pathway to Next‐Generation Wound Therapies, an in Vivo Murine Burn Model Study

Advanced Healthcare Materials, EarlyView.
Schematic illustration of the SH bandage placed on an infected burn wound and its role in wound healing. A superhydrophobic PDMS membrane coated with the PS verteporfin is placed over the wound area and illuminated with a red laser at 690 nm, generating airborne 1O2 above the tissue.
Fernanda Viana Cabral, QianFeng Xu, Natalie Eidenschink, Pareesha Haresh, Alessandra Nara de Souza Rastelli, Jeremy Goverman, Alexander Greer, Alan M. Lyons, Tayyaba Hasan   +8 more
wiley   +1 more source

Dust in the Local Interstellar Wind [PDF]

, 1999
The gas-to-dust mass ratios found for interstellar dust within the Solar System, versus values determined astronomically for the cloud around the Solar System, suggest that large and small interstellar grains have separate histories, and that large ...
Dorschner, J. M., Frisch, P. C., Geiss, J., Greenberg, J. M., Grün, E., Hoppe, P., Jones, A. P., Krätschmer, W., Landgraf, M., Linde, T. J., Morfill, G. E., Reach, W. T., Slavin, J. D., Svestka, J., Witt, A. N., Zank, G. P.   +15 more
core   +2 more sources

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

Mapping Dust Attenuation and the 2175 Å Bump at Kiloparsec Scales in Nearby Galaxies

The Astrophysical Journal, 2023
We develop a novel approach to measure the dust attenuation properties of galaxies, including the dust opacity, the shape of the attenuation curve, and the strength of the 2175 Å absorption feature.
Shuang Zhou, Cheng Li, Niu Li, Houjun Mo, Renbin Yan, Michael Eracleous, Mallory Molina, Caryl Gronwall, Nikhil Ajgaonkar, Zhuo Cheng, Ruonan Guo   +10 more
doaj   +1 more source

Evolution of Dust-to-Metal Ratio in Galaxies

, 2003
This paper investigates the evolution of the dust-to-metal ratio in galaxies based on a simple evolution model for the amount of metal and dust with infall.
Inoue, Akio K.
core   +1 more source