Results 51 to 60 of about 35,353 (312)

Important consequences of atomic diffusion inside main-sequence stars: opacities, extra-mixing, oscillations

EPJ Web of Conferences, 2017
Atomic diffusion, including the effects of radiative accelerations on individual elements, leads to important variations of the chemical composition inside stars.
Deal M., Vauclair S., Richard O.
doaj   +1 more source

The opacity of grains in protoplanetary atmospheres

, 2007
We have computed the size distribution of silicate grains in the outer radiative region of the envelope of a protoplanet evolving according to the scenario of Pollack et al. (1996).
Chokshi, Clayton, Dorschner, Fuchs, Haisch, Hubickyj, Kasten, Khare, Kovetz, M. Podolak, N. Movshovitz, Podolak, Podolak, Pollack, Saumon, van de Hulst, Weaver, Weidenschilling, Wetherill   +18 more
core   +1 more source

On Atomic Line Opacities for Modeling Astrophysical Radiative Transfer [PDF]

5 pages, 3 ...
Jonathan Morag
openalex   +3 more sources

Analytical expressions for radiative opacities of low Z plasmas

Journal of Physics: Conference Series, 2010
In this work we obtain analytical expressions for the radiative opacity of several low Z plasmas (He, Li, Be, and B) in a wide range of temperatures and densities. These formulas are obtained by fitting the proposed expression to mean opacities data calculated by using the code ABAKO/ RAPCAL. This code computes the radiative properties of plasmas, both
Garcia Rubiano, Jesus, Martel, Pablo, Gil, J.M., Rodríguez, Rafael y Gil, Florido, Ricardo, Mendoza, M.A., Mínguez Torres, Emilio   +6 more
openaire   +3 more sources

Decoupling Size and Electronic Effects in Doped SrTiO3 Photocatalysts Through Surface Area–Normalized CO2 Hydrogenation Rates

Advanced Functional Materials, EarlyView.
Exploring the photocatalytic reverse water–gas shift (RWGS) reaction on doped SrTiO3 nanoparticle films, reveals that normalizing catalytic rates by the catalyst's specific surface area (SSA) disentangled surface area effects from the catalyst's intrinsic material properties.
Dikshita Bhattacharyya, Baliana Shani, Isaac Holmes‐Gentle, Gerardo T Martinez, Martyn McLachlan, Nicola Seriani, Ludmilla Steier   +6 more
wiley   +1 more source

The Opacity Project: R-Matrix Calculations for Opacities of High-Energy-Density Astrophysical and Laboratory Plasmas

Atoms
Accurate determination of opacity is critical for understanding radiation transport in both astrophysical and laboratory plasmas. We employ atomic data from R-Matrix calculations to investigate radiative properties in high-energy-density (HED) plasma ...
Anil K. Pradhan, Sultana N. Nahar
doaj   +1 more source

Photoluminescent UV Light Modulation via Anisometric Carbon Nanodots for UV–Visible Shutter and UV Sensor

Advanced Functional Materials, EarlyView.
Anisometric carbon nanodots are synthesized directly from a liquid crystal precursor and embedded into polymer network liquid crystals to create soft, multifunctional photonic films. These hybrid devices exhibit polarized photoluminescence, broad UV absorption, and fast, electrically tunable light modulation.
Mangesh D. Patekari, Archana Ramadas, Minhee Yun, Seung Hee Lee, MinSu Kim   +4 more
wiley   +1 more source

The Effects of Metallicity, and Grain Growth and Settling on the Early Evolution of Gaseous Protoplanets [PDF]

, 2010
Giant protoplanets formed by gravitational instability in the outer regions of circumstellar disks go through an early phase of quasi-static contraction during which radii are large and internal temperatures are low.
Bodenheimer, Peter, Helled, Ravit
core   +1 more source

Quantifying Spatio‐Operational Heterogeneity in Electrochemical Devices via Operando Correlative Neutron and X‐Ray Tomography

Advanced Functional Materials, EarlyView.
Heterogeniety in electrochemical systems heavily influences device performance and durability. The study shows unique evidence of spatio‐operational heterogeneity in fuel cells via operando neutron and X‐ray tomography. Large variations in membrane thickness and hydration depend upon location and operating conditions, with implications on membrane ...
Pranay Shrestha, Jacob M. LaManna, Kieran F. Fahy, ChungHyuk Lee, Pascal J. Kim, Jason K. Lee, Elias Baltic, Daniel S. Hussey, David L. Jacobson, Aimy Bazylak   +9 more
wiley   +1 more source

The fragmentation of protostellar discs: the Hill criterion for spiral arms

, 2011
We present a new framework to explain the link between cooling and fragmentation in gravitationally unstable protostellar discs. This framework consists of a simple model for the formation of spiral arms, as well as a criterion, based on the Hill radius,
Binney, Birnstiel, Boley, Boley, Boley, Boley, Boley, Boss, Boss, Cai, Cai, Chiang, Clarke, Cossins, Dodson-Robinson, Durisen, Durisen, D’Alessio, Forgan, Gammie, James Wadsley, Johnson, Kalas, Kratter, Kratter, Kratter, Levin, Lodato, Lodato, Lodato, Marois, Mejía, Meru, Meru, Nayakshin, Nero, Paardekooper, Paardekooper, Patrick D. Rogers, Podolak, Price, Rafikov, Rafikov, Rafikov, Rice, Rice, Rogers, Shakura, Shen, Stamatellos, Stamatellos, Toomre, Vorobyov, Wadsley, Zhu   +54 more
core   +1 more source