Results 21 to 30 of about 120,187 (212)
Lithic economies and community organization at La Laguna, Tlaxcala [PDF]
, 2016 Site-wide, assemblage-based lithic analyses help to elucidate community dynamics including variability in domestic economies, technological skill and decision making, exchange networks, and ritual practices.
Carballo, David M., Walton, David P.
core +1 more source
#15M, imagens e sentimentos políticos
Simbiótica. Revista Eletrônica, 2022 The photo essay presented here is the result of an incursion in the first major act, in May 2019 and in the city of Rio de Janeiro, against the damage to education public policies caused by the government of Jair Messias Bolsonaro, known as 15M or #15M.
openaire +2 more sources
Stress‐to‐Light Conversion in an Earth‐Abundant Oxide Semiconductor
Advanced Science, EarlyView.Stress‐to‐light conversion in solids represents a unique photonic functionality, yet it has never been realized in a chemically simple and sustainable material. Here, we show that sustainable semiconductor ZnO exhibits strong near‐infrared (NIR) luminescence under elastic stress when defect‐engineered to stabilize the p‐type state.
Tomoki Uchiyama +7 more
wiley +1 more source
Identifying rotation in SASI-dominated core-collapse supernovae with a neutrino gyroscope
, 2018 Measuring the rotation of core-collapse supernovae (SN) and of their progenitor stars is extremely challenging. Here it is demonstrated that neutrinos may potentially be employed as stellar gyroscopes, if phases of activity by the standing accretion ...
Janka, Hans-Thomas +3 more
core +1 more source
Carbon Energy, EarlyView.ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal +6 more
wiley +1 more source
Toma tu barrio. Mapa social de Ruzafa antes, durante y después de la llegada del 15M [PDF]
, 2015 En el presente artículo vamos a exponer los resultados de una investigación que busca construir una mirada del barrio de Ruzafa (Valencia) antes, durante y después de la llegada del movimiento del 15M.
Francisco Amat, Andrea +1 more
core +1 more source
Presupernova collapse models with improved weak-interaction rates [PDF]
, 2000 Improved values for stellar weak interaction rates have been recently calculated based upon a large shell model diagonalization. Using these new rates (for both beta decay and electron capture), we have examined the presupernova evolution of massive ...
A. Heger +13 more
core +2 more sources
Emerging Trends in Organic Photoreactions Utilizing Disulfides
European Journal of Organic Chemistry, EarlyView.Disulfides are versatile, nontoxic alternatives to metal photocatalysts. This review explores their role as photoactivated thiyl‐radical precursors and bifunctional catalysts (HAT/electron shuttling) in diverse transformations. Strategies for electronic tuning and development into recyclable heterogeneous materials are highlighted for sustainable ...
Sunil Kumar +3 more
wiley +1 more source
, 2013 In this paper, we investigate the link between the hypervelocity stars (HVSs) discovered in the Galactic halo and the S-stars moving in the Galactic center (GC), under the hypothesis that they are both the products of the tidal breakup of the same ...
Lu, Youjun, Yu, Qingjuan, Zhang, Fupeng
core +1 more source
Presupernova Evolution of Rotating Massive Stars and the Rotation Rate of Pulsars [PDF]
, 2003 Rotation in massive stars has been studied on the main sequence and during helium burning for decades, but only recently have realistic numerical simulations followed the transport of angular momentum that occurs during more advanced stages of evolution.
A. Heger +4 more
core +4 more sources