Results 91 to 100 of about 6,605 (271)

Potassium Migration of Chestnut Shell Ashes Under Oxidizing Atmosphere and Its Modification Mechanism by Additives

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Biomass energy plays a critical role in alleviating environmental pressures. However, its relatively high content of alkali metals (especially for potassium) would cause ash‐related issues during combustion. To mitigate these issues, the potassium migration behaviors during chestnut shell (CS) conversion and the modification mechanisms of ...
Meijie Zhou, Weijie Guo, Fenghai Li, Xuefei Liu, Ziqiang Yang, Mingjie Ma, Yitian Fang   +6 more
wiley   +1 more source

IR Reflectography, Pulse-Compression Thermography, MA-XRF, and Radiography: A Full-Thickness Study of a 16th-Century Panel Painting Copy of Raphael. [PDF]

J Imaging, 2022
Cavaleri T, Pelosi C, Ricci M, Laureti S, Romano FP, Caliri C, Ventura B, De Blasi S, Gargano M.   +8 more
europepmc   +1 more source

Correction: On the study of paintings’ stratigraphy by fs-LIBS and MA-XRF techniques

Journal of Analytical Atomic Spectrometry
Correction for ‘On the study of paintings’ stratigraphy by fs-LIBS and MA-XRF techniques’ by E. Kechaoglou et al., J. Anal. At. Spectrom., 2024, https://doi.org/10.1039/D3JA00199G.
E. Kechaoglou, K. A. Agrafioti, G. P. Mastrotheodoros, D. F. Anagnostopoulos, C. Kosmidis   +4 more
openaire   +1 more source

Integrating agro‐residue valorization and clean hydrogen production: coconut fiber‐based catalysts for NaBH4 hydrolysis

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract A novel phosphoric acid‐treated green coconut fiber (GCF‐C) was developed as a catalyst for hydrogen production from the hydrolysis of sodium borohydride (NaBH4). Characterization techniques confirmed structural modifications, including X‐ray diffraction, scanning electron microscopy, X‐ray fluorescence, Fourier transform infrared, and ...
Isabelly Silveira Freitas, Francisco Izaias da Silva Aires, Dayana Nascimento Dari, Jacob Tchiyeke António Kandjila, Maurício Quintas Salamba, Diego Lomonaco, Monalisa Moura de Oliveira, Pierre Basílio Almeida Fechine, Rafael Leandro Fernandes Melo, Alan Silva de Menezes, Marcos Carlos de Mattos, Leonardo Farias Serafim, Maria Cristiane Martins de Souza, Ada Amelia Sanders Lopes, John Herbert da Silva Felix, Eveline de Abreu Menezes, José Cleiton Sousa dos Santos   +16 more
wiley   +1 more source

Discovery and multi-analytical study of the last missing quarter from René Magritte’s La pose enchantée

Heritage Science, 2018
The last missing quarter of La pose enchantée, a 1927 Magritte’s oil painting disappeared in 1932, has been finally found beneath Dieu n’est pas un saint, picture painted by the Belgian surrealist between 1935 and 1936, conserved at the Brussels Magritte
Catherine Defeyt, Elodie Herens, Frederik Leen, Francisca Vandepitte, David Strivay   +4 more
doaj   +1 more source

Progress in all‐dry‐processed inorganic perovskite solar cells

Bulletin of the Korean Chemical Society, EarlyView.
This review summarizes recent advances in all‐inorganic perovskite solar cells, focusing on vacuum‐based deposition strategies for Cs‐based inorganic perovskite absorbers and inorganic charge transporting materials. We highlight the key principles governing inorganic film growth and future directions toward high‐performance all‐dry‐processed inorganic ...
Yo‐Han Jeon, Jae‐Hwan Kim, Jin‐Wook Lee   +2 more
wiley   +1 more source

ANALYSIS AND CONSERVATION OF PORTRAIT OF A YOUNG MAN, FORMERLY ATTRIBUTED TO ÉDOUARD MANET [PDF]

, 2017
A painting that was formerly attributed to Édouard Manet, was researched, examined, and technically analyzed. Imaging techniques revealed a hidden inscription in the background that places the painting in Paris in the late 19th century.
Goodman, Becca
core   +1 more source

Wurtzite‐Chalcopyrite Crystal Polymorphism in CuGaS2 Nanoparticles Dictates the Localized Surface Plasmon Resonance

Chemistry – A European Journal, EarlyView.
Crystal phase‐ and size‐selective synthesis of chalcopyrite and wurtzite‐type CuGaS2 NPs was successfully achieved. They exhibited clear LSPR in the NIR region. The extinction coefficient of chalcopyrite was three times higher than that of wurtzite due to its greater symmetry and dipole moment. These results will enable precise control of the plasmonic
Keito Sano, Daniel M. Packwood, Masanori Sakamoto   +2 more
wiley   +1 more source

Expedient Discovery of a Metallaphotoredox Cyanomethylation for Synthesizing α‐Aryl Nitriles

Chemistry – A European Journal, EarlyView.
A metallaphotoredox cyanomethylation reaction has been developed for the synthesis of valuable α‐aryl nitrile intermediates. The methodology was successfully applied to diverse medicinally‐relevant substrates, providing an expedient route to anti‐cancer Senexin compounds, while also removing the need for toxic cyanide reagents. The mechanism was probed
Gemma C. Cook, Blandine McKay, Craig Jamieson, Lee J. Edwards, Charlotte Harriman, Zackary S. Read, Simon T. Bate   +6 more
wiley   +1 more source

Magmatic evolution of the Nevado del Ruiz volcano, Central Cordillera, Colombia : mineral chemistry and geochemistry [PDF]

, 1988
A partir de nouvelles données pétrographiques, minéralogiques et géochimiques, les auteurs réalisent une caractérisation géochimique des laves du Nevado del Ruiz (éruptions quaternaires, historiques et récentes) et des formations volcaniques du Pliocène ...
Briqueu, L., Goemans, P., Murcia, L.A., Olivier, R.A., Salinas, E.R., Thouret, J.C., Vatin-Pérignon, N.   +6 more
core