Results 131 to 140 of about 880,117 (356)

UV Extinction Towards a Quiescent Molecular Cloud in the SMC

open access: yes, 2012
Context: The mean UV extinction law for the Small Magellanic Cloud (SMC) is usually taken as a template for low-metallicity galaxies. However, its current derivation is based on only five stars, thus placing doubts on its universality. An increase in the
Arias   +25 more
core   +1 more source

Interstellar Extinction [PDF]

open access: yesAstrophysics, 2016
This review describes our current understanding of interstellar extinction. This differ substantially from the ideas of the 20th century. With infrared surveys of hundreds of millions of stars over the entire sky, such as 2MASS, SPITZER-IRAC, and WISE, we have looked at the densest and most rarefied regions of the interstellar medium at distances of a ...
openaire   +2 more sources

Mastering Proton Activities in Aqueous Batteries

open access: yesAdvanced Materials, EarlyView.
Advanced aqueous batteries are promising alternatives for grid energy storage. Understanding and mastering the proton activities in aqueous electrolytes will guide the design of sustainable and long‐lasting aqueous batteries. This Perspective comments on the current understanding of the thermodynamic and kinetic perspectives of proton activities and ...
Leiting Zhang, Chao Zhang, Erik J. Berg
wiley   +1 more source

The local conservation status of the regionally rarest bird species in the state of Rio de Janeiro, southeastern Brazil

open access: yesJournal of Threatened Taxa, 2015
We reviewed the local current status and summarized the suspected causes of rarity, and presumed major threats to the 84 rarest bird speciesin the state of Rio de Janeiro, southeastern Brazil.
Francisco Mallet-Rodrigues   +1 more
doaj   +1 more source

Extinction Laws toward Stellar Sources within a Dusty Circimstellar Medium and Implications for Type Ia Supernovae

open access: yes, 2016
Many astronomical objects are surrounded by dusty environments. In such dusty objects, multiple scattering processes of photons by circumstellar (CS) dust grains can effectively alter extinction properties.
Maeda, K., Nagao, T., Nozawa, T.
core   +1 more source

Escalator to extinction [PDF]

open access: yesProceedings of the National Academy of Sciences, 2018
Thirty years ago, biologists began to predict how climate change would alter species’ ranges, extinctions, and their roles in ecosystems (1). Since then, evidence has begun to confirm these nascent predictions. The current global temperature rise of ∼1 °C has shifted species up mountains and latitudes (2), altered the timing of key life events such as ...
openaire   +3 more sources

Emerging Opportunities of Colloidal Quantum Dots for Photocatalytic Organic Transformations

open access: yesAdvanced Materials, EarlyView.
Colloidal quantum dots (QDs) have gained significant attention as photocatalysts in organic transformations in recent years. This review highlights QDs’ distinctive features, including the quantum size effect, compositional and structural diversity, tunable surface chemistry, and photophysics.
Qinxuan Cao   +4 more
wiley   +1 more source

On the extinct helidae [PDF]

open access: yesAmerican Journal of Science, 1897
n ...
openaire   +2 more sources

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