Results 11 to 20 of about 1,115 (181)
High-Density Iron Nanostructures Grown on Electrospun PVA/Pectin Fibers via Seed-Mediated Strategy for As(V) Remediation. [PDF]
A seed‐assisted anisotropic growth strategy enabling unprecedented iron loading and controlled anisotropic nanostructure formation on electrospun PVA/pectin nanofibers is presented. By decoupling nucleation and growth through sequential Fe2+ then Fe3+ doping, it achieves a 12‐fold increase in accessible iron content, producing rice‐grain‐like ...
Santos AC +5 more
europepmc +2 more sources
Analysis of thermal process of pozzolan production
The objective of this study was evaluated the effect of heat treatment parameters on the pozzolanic activity of natural kaolin clays. The experimental design included three factors: kaolin type, temperature and time.
R. Mejía De Gutiérrez +2 more
doaj +1 more source
This study evaluates the use of large amounts of fine powders (fillers) derived from a Colombian volcanic material into the production of self-compacting concrete (SCC) for lower strength applications.
D. Burgos +3 more
doaj +1 more source
Alternative concrete based on alkali-activated slag
This article reports the results of related to on the performance of concrete made with waterglass (Na2SiO3•nH2O + NaOH)-activated Colombian granulated blast furnace slag.
E. Rodríguez +3 more
doaj +1 more source
Optimization of Mechanical and Setting Properties in Acrylic Bone Cements Added with Graphene Oxide
The extended use of acrylic bone cements (ABC) in orthopedics presents some disadvantages related to the generation of high temperatures during methyl methacrylate polymerization, thermal tissue necrosis, and low mechanical properties.
Lina Marcela Ruiz Rojas +5 more
doaj +1 more source
Efecto de materiales cementantes suplementarios en el control de la corrosión del concreto
La falla del concreto en un tiempo inferior a la vida útil para la cual se diseñó puede ser consecuencia del medio ambiente al cual ha estado expuesto o de algunas otras causas de tipo interno.
R. Mejía de Gutiérrez
doaj +1 more source
Acrylic bone cements (ABC) are widely used in orthopedics for joint fixation, antibiotic release, and bone defect filling, among others. However, most commercially available ABCs exhibit a lack of bioactivity and are susceptible to infection after ...
Mayra Eliana Valencia Zapata +2 more
doaj +1 more source
Se presentan los resultados obtenidos al someter un material geopolimérico basado en metacaolín a una temperatura de 1.200 °C utilizando como activador alcalino una mezcla de hidróxido de potasio con diferentes fuentes de sílice: un silicato comercial de
Monica A Villaquirán
doaj +1 more source
La cuantificación electroquímica de biomarcadores en fluidos frecuentemente emplea nanopartículas metálicas como sustratos de detección. El desarrollo de materiales de cuantificación ha evolucionado en las últimas décadas con la incorporación de ...
Salvador Fernández +3 more
doaj +1 more source
Tecnologías de materiales compuestos
Los materiales poliméricos presentan características que permiten diversas aplicabilidades, es por ello que en este artículo, se describen tecnología utilizada y la distribución de las fibras según el tipo de composite sus características ingenieriles, y los factores que influyen.
openaire +1 more source

