Results 111 to 120 of about 1,402,894 (319)

Diseño de polvos de molde para colada continua de slabs de aceros bajo carbono

Revista de Metalurgia, 2004
A partir de la caracterización de polvos comerciales mediante pruebas de laboratorio y la modificación de sus propiedades mediante adiciones de compuestos químicos, se identificaron y desarrollaron criterios y estrategias de diseño que sirvieron de base ...
A. Cruz-Ramírez, J. F. Chávez-Alcalá, J. A. Romero-Serrano   +2 more
doaj   +1 more source

Micro and Nanostructural Diversity of Lizard Osteoderm Capping Tissue in Relation to Mechanical Performance

Advanced Functional Materials, EarlyView.
This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo, Marius Didziokas, Malene Siri Berg Jacobsen, Thorbjørn Erik Køppen Christensen, Innokenty Kantor, Mads Ry Vogel Jørgensen, Klaus Pagh Almtoft, Jesper Skovhus Thomsen, Anthony Herrel, Catherine J.A. Williams, Henrik Birkedal   +10 more
wiley   +1 more source

Selective Separation of the Rare Earth Elements Dysprosium and Neodymium via Tailoring Nanocellulose Chemical Structure

Advanced Functional Materials, EarlyView.
Dicarboxylate‐modified anionic hairy cellulose nanocrystals exhibit a high selectivity for dysprosium(III) over neodymium(III). This selectivity arises from disordered dicarboxylate cellulose “hairs” that enable cooperative ionic coordination, hydrogen bonding, and strain‐induced conformational shrinkage.
Roya Koshani, Shang‐Lin Yeh, Karuna Anna Sajeevan, Mica L. Pitcher, Dawson Alexander, Ratul Chowdhury, Amir Sheikhi   +6 more
wiley   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

Advanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono, Anna Puiggalí‐Jou, Greta Cocchi, Mariangela Miccoli, Katharina Maniura‐Weber, Marcy Zenobi‐Wong, Esther Amstad   +6 more
wiley   +1 more source

Colaboración interuniversitaria como soporte a la pequeña minería en Angola [PDF]

, 2008
Angola, con una gran cantidad de recursos minerales, no cuenta con capacidad, tanto material como humana, para desarrollar las tareas necesarias pa ra el aprovechamiento óptimo de sus recursos, a excepción del petróleo y los diamantes.
Alfonso Abella, María Pura, Mata Perelló, Josep Maria, Melgarejo Draper, Joan Carles, Mesa Vílchez, Claudia, Monterde Ruiz, Eva   +4 more
core  

Nano‐ and Micro‐Sized Solid Materials Used as Antiviral Agents

Advanced Functional Materials, EarlyView.
Due to the rise of viral infections in humans and possible viral outbreaks, the use of nano‐ or micro‐sized materials as antiviral agents is rapidly increasing. This review explores their antiviral properties against RNA and DNA viruses, either as a prevention or a treatment tool, by delving into their mechanisms of action and how to properly assess ...
Orfeas‐Evangelos Plastiras, Imelda Raczkiewicz, Peggy Bouquet, Jean‐Philippe Dacquin, Jeremy Dhainaut, Anne Goffard, Christophe Volkringer   +6 more
wiley   +1 more source

Dual‐Ligand Metal‐Organic Frameworks via In Situ Amidoxime Engineering for Selective Ion Separation

Advanced Functional Materials, EarlyView.
Inspired by microbial ion‐trapping mechanisms, a mild and universal strategy is developed to construct highly porous amidoxime‐functionalized MOFs. DFT calculations and molecular force measurements reveal that the dual‐ligand amidoxime configuration significantly strengthens Ga(III) affinity.
Zhifang Lv, Guixia Fan, Yun Bai, Guosheng Li, Peng Li, Wenjihao Hu, Yijun Cao, Wenshuai Yang, Daoguang Teng, Hongbo Zeng   +9 more
wiley   +1 more source

Evaluación de cinco accesiones de centrosema pubescens para la alimentación de bovinos en un bosque húmedo tropical

Revista Científica, 2010
En la zona de El Guayabo, al Sur del Lago de Maracaibo, Estado Zulia, Venezuela. Se realizó un experimento con el fin de comparar la digestibilidad in vitro de la materia orgánica (DIVMO) y los contenidos de proteína cruda (PC) y minerales (macro y ...
Manuel Pirela León, David Morillo, Jesús Faría Mármol   +2 more
doaj  

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Modelaje probabilístico y cuantificación de la incertidumbre de los horizontes de la corteza de meteorización del depósito de níquel San Felipe

Minería y Geología
Aunque el modelaje geológico comúnmente realizado en los depósitos minerales es del tipo determinístico, la modelación probabilística resulta más adecuada para conocer o medir cuantitativamente la incertidumbre asociada.
José Alberto Arias-del Toro, Alain Carballo-Peña, Elmidio Estévez-Cruz, Rosa María Cobas-Botey   +3 more
doaj