Results 161 to 170 of about 418,445 (289)

Extinction by stratified interstellar dust grains

, 2010
We compute the optical properties of spherical dust grains composed of hollow silicate cores coated with two carbonaceous layers, the inner layer of mostly graphitic sp2 carbon and the outer layer of sp3 polymeric amorphous carbon, and explore the consequences on modelled interstellar extinction curves.
M. A. Iatì, 1, C. Cecchi Pestellini, CACCIOLA, ADRIANO, SAIJA, Rosalba, DENTI, Paolo, BORGHESE, Ferdinando   +6 more
openaire   +3 more sources

A novel laboratory methodology to evaluate the particle extinction-to-backscatter ratio or particle lidar ratio of aerosols. [PDF]

Sci Rep
Miffre A, Pacoret-Berenger C, Genoud AP, Rairoux P.   +3 more
europepmc   +1 more source

DUST IN ACTIVE GALACTIC NUCLEI: ANOMALOUS SILICATE TO OPTICAL EXTINCTION RATIOS?

, 2014
Dust plays a central role in the unification theory of active galactic nuclei (AGNs). However, little is known about the nature (e.g., size, composition) of the dust that forms a torus around the AGN. In this Letter, we report a systematic exploration of
Lyu, Jianwei, Hao, Lei, Li, Aigen
core  

Storying Multispecies‐Life‐and‐Death: Becoming‐Grief‐Able in Educational Spaces for Post‐Necrocene Futures

Children &Society, EarlyView.
ABSTRACT We situate this article from/with/in the Necrocene, a geological period marked by the systematic production of human and more‐than‐human death to an extent that ecological destruction, extinction, loss and harm have become a structural feature of modern life.
Charlotte Hankin, Hannah Hogarth
wiley   +1 more source

Analysis of Dust Dispersion Behavior and Influencing Factors for Powder Coatings in a 20 L Transparent Sphere. [PDF]

ACS Omega
Wang J, Liu N, Guo C, Yan T.
europepmc   +1 more source

Reconfiguring ‘the Other’ in Child Studies With the Camera: Encountering (the) Child as Phenomenon

Children &Society, EarlyView.
ABSTRACT This paper reconfigures ‘the Other’ in child studies through Trịnh Thị Minh‐Hà's notion of the inappropriate/d other as performed in Karen Barad's Diffracting diffraction: Cutting together‐apart (2014). We explore how this notion radically disrupts classical ideas of identity, individualism, human exceptionalism, and Adult‐centrism—exemplified
Karin Murris, Soern Finn Menning
wiley   +1 more source

Lower speciation, not higher extinction, drove African megaherbivore diversity collapse. [PDF]

Nat Commun
Cantalapiedra JL, Lazagabaster IA, Blanco F, Hauffe T, Bibi F, Ríos M, Mennecart B, Saarinen J, Silvestro D, Hernández Fernández M, Sanisidro O.   +10 more
europepmc   +1 more source

A revised classification system of the marronoid clade of spiders (Araneae), based on dense sampling phylogenomics and comparative morphology

Cladistics, EarlyView.
Abstract The marronoid clade is a globally distributed, ecologically diverse group of spiders. It is an important faunal component in both natural and synanthropic environments, and even found in aquatic and extreme habitats such as desert salt flats. The systematics of the marronoid clade has been notoriously unstable due to the widespread character ...
Jonas O. Wolff, Michael B. J. Kelly, Franklyn Cala‐Riquelme, Jacob A. Gorneau, Katherine O. Montana, Helen M. Smith, Phil J. Sirvid, Cor J. Vink, Lauren A. Esposito, Martín J. Ramírez, Charles E. Griswold   +10 more
wiley   +1 more source

Performance Evaluation, Optical Optimization and Earth-Based Validation of Star Sensors for Ground Detection in Martian Dust Environments. [PDF]

Sensors (Basel)
Gao Y, He MJ, Li Y, Wang HY, Li SL, Qi H.   +5 more
europepmc   +1 more source

Effects of restoration practices on biodiversity in temperate and boreal forests

Conservation Biology, EarlyView.
Abstract Several restoration practices are used to mitigate and compensate for the negative effects of large‐scale forestry on biodiversity in temperate and boreal forests. A comprehensive synthesis of the benefits of these practices across taxa is missing. We conducted a systematic review and meta‐analysis on this topic.
Malin Tälle, Thomas Ranius, Julia Koricheva   +2 more
wiley   +1 more source