Results 131 to 140 of about 938,194 (315)

Maya Blue‐Inspired Hybrid Coating for Robust and Superhydrophilic Solar Evaporators Using Commercial Black Acrylic Paint

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates a Maya blue‐inspired hybrid solar evaporator using commercial black acrylic paint, achieving 98% solar‐thermal conversion efficiency and 2.39 kg m−2 h−1 water evaporation rate through a durable, hydrophilic organic–inorganic structure that enables scalable, cost‐effective desalination and wastewater purification.
Dao Thi Dung   +5 more
wiley   +1 more source

Les marbres de Flandres et du Hainaut à Versailles

open access: yesBulletin du Centre de Recherche du Château de Versailles, 2013
For two thousand years Belgium and the north of France have been operating regions for construction stone and renowned marble. During the baroque period hundreds of marble varieties were available, and it is not surprising that Louis XIV’s engineers ...
Éric Groessens
doaj   +1 more source

The Tidal Disruption of Giant Stars and Their Contribution to the Flaring Supermassive Black Hole Population

open access: yes, 2012
Sun-like stars are thought to be regularly disrupted by supermassive black holes (SMBHs) within galactic nuclei. Yet, as stars evolve off the main sequence their vulnerability to tidal disruption increases drastically as they develop a bifurcated ...
Alexander   +70 more
core   +1 more source

Analysis of the Electrochemical Stability of Sulfide Solid Electrolyte Dry Films for Improved Dry‐Processed Solid‐State Batteries

open access: yesAdvanced Functional Materials, EarlyView.
An adapted processing for solvent‐free argyrodite solid electrolyte films based on insights into degradation mechanisms of the widely used binder polytetrafluoroethylene is presented. By adapting the dry film processing, long‐term cycling in Si||NMC pouch cells is demonstrated over more than 1000 cycles with a capacity retention of more than 80%, and ...
Maria Rosner   +10 more
wiley   +1 more source

Late-time Radio Flares in Tidal Disruption Events

open access: yesThe Astrophysical Journal
Radio monitoring unveiled late (hundreds to a thousand days) radio flares in a significant fraction of tidal disruption events. We propose that these late-time radio flares are a natural outcome if the surrounding density profile flattens outside the ...
Tatsuya Matsumoto, Tsvi Piran
doaj   +1 more source

Variability: A X-ray ruler for the AGN structure model

open access: yesEPJ Web of Conferences, 2012
Validating our understanding of the innermost structure of Active Galactic Nuclei (AGN) would require resolving sub-parsec scales. Lacking adequate direct imaging, X-ray astronomy can still contribute to this undertaking through the study of spectral ...
Guainazzi M.
doaj   +1 more source

UNTOLD BLACK HISTORY [PDF]

open access: yes, 2017
Black people’s history in the past centuries has being portrayed as people that lack the acumen to build any civilization of its own. The knowledge of the Black history has so far being said to be crude or savage and do not have a place in civilization.
Fomba, Ahmed
core  

Single Solid‐State Ion Channels as Potentiometric Nanosensors

open access: yesAdvanced Functional Materials, EarlyView.
Single gold nanopores functionalized with mixed self‐assembled monolayers act as solid‐state ion channels for direct, selective potentiometric sensing of inorganic ions (Ag⁺). The design overcomes key miniaturization barriers of conventional ion‐selective electrodes by combining low resistivity with suppressed loss of active components, enabling robust
Gergely T. Solymosi   +4 more
wiley   +1 more source

Beauty is Pain: Black Women’s Identity and Their Struggle with Embracing Their Natural Hair [PDF]

open access: yes, 2017
In the United States Black hair is viewed negatively because of its difference. Black females often deal with societal pressures to alter their kinky, curly hair from its natural state.
Bencosme, Yamilex
core   +1 more source

BlackCAT: A catalogue of stellar-mass black holes in X-ray transients

open access: yes, 2015
During the last ~50 years, the population of black hole candidates in X-ray binaries has increased considerably with 59 Galactic objects detected in transient low-mass X-ray binaries, plus a few in persistent systems (including ~5 extragalactic binaries).
Altamirano   +443 more
core   +1 more source

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