Results 41 to 50 of about 309 (134)

Recovery of Rare Earths from End‐of‐Life NdFeB Permanent Magnets from Wind Turbines

ChemSusChem, Volume 18, Issue 10, May 19, 2025.
This work outlines a process for the recovery of rare earth elements from permanent magnets from wind turbines. Pyrometallurgical and hydrometallurgical methods are employed to produce a concentrated rare earth solution. Finally, these elements are selectively precipitated yielding a mixed rare earth oxalate. This process demonstrates the efficient and
Lorena Alcaraz, Olga Rodríguez‐Largo, Gorka Barquero‐Carmona, Alba Berja, Adrián Quesada, Félix A. López   +5 more
wiley   +1 more source

Ceramiche a vernice nera da Su Landiri Durci (CI) tra produzioni locali e importazioni

Layers. Archeologia Territorio Contesti, 2017
: Recent excavations near the town of Carbonia (CI) revealed the ruins of wall structures and assorted items (such as pottery, coins, glasses, objects in precious metal and inscriptions in neo-punic language) related to a Punic-Roman site. This work will
Gianna De Luca
doaj   +1 more source

Determination of Boron Content in Surface Paintings From Historical Stained‐Glass Windows

Chemistry–Methods, Volume 5, Issue 5, May 2025.
The present work validates the use of LIBS as an analytical technique for in‐situ qualitative and quantitative determination of boron content in enamels and historical glass samples and provides information on in‐depth possible changes in the chemical composition induced by corrosion effects.
Laura Maestro‐Guijarro, Mercedes Sedano, Nadine Schibille, Trinitat Pradell, Marta Castillejo, Mohamed Oujja, Teresa Palomar   +6 more
wiley   +1 more source

Correlation between glaze-colors and structural properties of the HIZEN celadons produced in the Edo period of Japan, by means of X-ray diffraction (І) Correlação entre cores de esmaltes e propriedades estruturais de celadons Hizen produzidos no período Edo do Japão, por meio de difração de raios X (І)

Cerâmica, 2011
HIZEN celadons produced at Arita and Imari areas in Japan from 1630's to 1790's (Edo period) have been investigated by means of X-ray fluorescence analysis, and X-ray diffraction and X-ray absorption spectra using synchrotron radiation. It is found that,
M. Hidaka, K. Ohashi, R. P. Wijesundera, L. S. R. Kumara, M. Watanabe, K. Koga, Jae-Young Choi, N. E. Sung, Y. J. Park   +8 more
doaj   +1 more source

Multiscale Thermal Analysis of Gold Nanostars in 3D Tumor Spheroids: Integrating Cellular‐Level Photothermal Effects and Nanothermometry via X‐Ray Spectroscopy

Advanced Healthcare Materials, Volume 14, Issue 11, April 25, 2025.
This study investigates nanoscale temperatures generated by photoexcited gold nanostars and their correlation with microscale thermal damage at the cellular level. Using X‐ray absorption spectroscopy and confocal microscopy in 3D cancer spheroids, it assesses localized heating effects and examines tumor cell structure and integrity, offering insights ...
Rosalía López‐Méndez, Anastasiia Dubrova, Javier Reguera, Rául Magro, Fátima Esteban‐Betegón, Ana Parente, Miguel Ángel García, Julio Camarero, Emiliano Fonda, Claire Wilhelm, Álvaro Muñoz‐Noval, Ana Espinosa   +11 more
wiley   +1 more source

Materiales Inéditos de la Cueva de Boquique. Datos para una Nueva Sistematización de la Edad del Bronce en Extremadura

Zephyrus, 2009
El objeto de esta nota es dar a conocer un lote de cerámica y otros objetos, recogidos por José Luis Blanco, en la dehesa de Valcorchero, procedentes de la cueva de Boquique y sus alrededores.
María Cleofé RIVERO DE LA HIGUERA
doaj  

Alguns contributos das ciências para a investigação de obras de arte

Biblos, 2019
O estudo científico de uma obra de arte pode ajudar a esclarecer muitos aspectos do seu percurso, desde a sua execução até à actualidade. Uma caracterização detalhada dos materiais aplicados ajuda os historiadores de arte e os peritos em obras de arte a ...
Francisco Paulo de Sá Campos Gil, Lídia Maria Gil Catarino   +1 more
doaj   +1 more source

Bioactive Glasses as Alternatives to Hydroxyapatite for Bone Implant Coatings: A Comparative Study

Journal of Biomedical Materials Research Part B: Applied Biomaterials, Volume 113, Issue 4, April 2025.
ABSTRACT No material currently matches the remodeling rates of natural bone. Although hydroxyapatite is commonly employed as a bioactive coating material for implants, its resorption rate is relatively low. Conversely, bioactive glass materials offer versatility, as they can be tailored with various oxides and proportions to alter their structure and ...
B. Garrido, N. Garcia‐Giralt, M. A. Rodríguez, A. H. de Aza, I. G. Cano   +4 more
wiley   +1 more source

Chemical interaction silicon nitride ceramics and iron alloys

Boletín de la Sociedad Española de Cerámica y Vidrio, 2000
Metal/ceramic diffusion experiments are helpful to study bonding mechanisms or the effect of metal composition on the chemical wear of ceramic cutting tools.
Oliveira, F. J., Silva, R. F., Vieira, J. M.   +2 more
doaj  

Biodistance Analysis via Dental Phenotypic Diversity in Early Collective Burials at Cerro Juan Díaz, Panamá (30–650 CE) [Análisis de Biodistancia Mediante la Diversidad Fenotípica Dental en los Entierros Colectivos Tempranos del Cerro Juan Díaz, Panamá (30–650 EC)]

American Journal of Biological Anthropology, Volume 186, Issue 1, January 2025.
PCoA plot showing biodistance by age at the Cerro Juan Díaz site in Central Panamá. ABSTRACT Objectives Burial space reuse and prolonged interaction with the dead were common practices in the Isthmo‐Colombian Area, dating back to at least the Early Ceramic Period in the Greater Coclé region.
Nicole E. Smith‐Guzmán, Jeny Smid Núñez, Jonathan D. Cybulski, Luis A. Sánchez Herrera   +3 more
wiley   +1 more source