Results 21 to 30 of about 6,601 (223)

Tecnología de fabricación de arrabio con inyección de combustibles y otros materiales por toberas en el horno alto. III parte. Inyección de mezclas combustibles y otros materiales no combustibles

Revista de Metalurgia, 1998
Se analiza la inyección de materiales no combustibles (minerales de hierro, fundentes, escorias, arenas ilmeníticas), residuos siderúrgicos, plásticos y otros, tanto de forma individual como en mezcla con carbón pulverizado.
L. García, A. Cores, A. Formoso, A. Babich, S. Yaroshevskii   +4 more
doaj   +1 more source

Shape‐Changing Multiphase Microparticles from Complex Liquid Crystal Emulsions

Advanced Functional Materials, EarlyView.
Liquid crystalline network (LCN) microparticles are prepared from single, double (Janus), and triple emulsions through a simple and scalable bulk‐emulsification strategy. Under heating, the particles exhibit robust, reversible, large‐amplitude deformations that depend both on the morphology and the liquid crystals director field configuration.
Marco Turriani, Camilla Parmeggiani, Daniele Martella, Alberto Concellón   +3 more
wiley   +1 more source

Avances en la regulación y control del estado térmico del horno alto

Revista de Metalurgia, 1997
Se utiliza un sistema automatizado de dirección (SAD) para el control del estado térmico del crisol del horno alto, teniendo en cuenta la relación que existe entre la temperatura del arrabio y su contenido de silicio.
A. Babich, L. García, A. Formoso, J. Monchón, A. Cores   +4 more
doaj   +1 more source

Optoelectronic Control of Redox Dynamics in POM Memristors for Noise‐Resilient Speech and Hardware‐Level Motion Recognition

Advanced Functional Materials, EarlyView.
Optoelectronic control of redox‐active polyoxometalate clusters in polymer matrices yields hybrid memristors with switchable volatile and non‐volatile modes, enabling reservoir‐type in‐sensor optical preprocessing and stable multilevel synapses for multimodal neuromorphic computing, including noise‐tolerant audiovisual keyword recognition and hardware ...
Xiangyu Ma, Ziyu Lv, Guohua Zhang, Zhongyue Xu, Yongbiao Zhai, Haiming Huang, Qiyan Zhang, Xiaojin Zhao, Yan Wang, Ye Zhou, Ziyu Xiong, Guanglong Ding, Wentao Xu, Su‐Ting Han   +13 more
wiley   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

Advanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán, Elena Pérez‐Elvira, Diego J. Vicent, Marco Lozano, Diego Soler‐Polo, Koen Lauwaet, José M. Gallego, Rodolfo Miranda, José I. Urgel, Pavel Jelínek, Nazario Martín, David Écija   +11 more
wiley   +1 more source

Evaluation of the extrinsic characterization layer of zirconium-infiltrated lithium silicate glass ceramic

Brazilian Dental Science
Objective: To evaluate the effects of the extrinsic characterization process on the optical properties and roughness of zirconium-infiltrated lithium silicate glass-ceramic.
Lara Viégas Faria Teixeira , Karina Barbosa Souza, Larissa Araújo Lopes Barreto , Amir Mohidin Demachkia , Natália Rivoli Rossi, Tarcisio José de Arruda Paes Junior   +5 more
doaj   +1 more source

Tecnología de fabricación de arrabio con la inyección de combustibles y otros materiales por toberas en el horno alto. I Parte. Características de los combustibles auxiliares y su influencia en el proceso del horno alto

Revista de Metalurgia, 1998
La inyección de combustibles por toberas en el horno alto es una práctica utilizada en la mayoría de los hornos con el objetivo principal de reducir el consumo de coque por tonelada de arrabio fabricado. La naturaleza de estos combustibles es muy diversa
L. García, A. Cores, A. Formoso, A. Babich, S. Yaroshevskii   +4 more
doaj   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Rasgos Comunes y Diferenciadores de los Sistemas de Acceso a la Universidad en Cataluña; Comunidad Valenciana y País Vasco

Revista Iberoamericana sobre Calidad, Eficacia y Cambio en Educación, 2016
We study the results of entrance examinations to the University of Catalonia, Community of Valencia and Basque Country, through the analysis of the results obtained in June of 2011 and the evolution of the entrance examinations results in courses 08-09 ...
Josu Ruiz de Gauna Gorostiza, Joxemari Sarasua Fernández   +1 more
doaj  

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source