Results 11 to 20 of about 116,136 (195)

Combustión de carbón vegetal, enemigo latente del medio ambiente

Sabia Revista Científica, 2020
El presente artículo emerge de una investigación, la cual se plantea como objetivo generar una estrategia medio ambiental que permita minimizar el impacto de la calidad del aire producida por la combustión del carbón vegetal en la población de Barrio ...
Mary Lucero Valencia Cuero
doaj   +1 more source

MODELADO COMPUTACIONAL DE LA COMBUSTIÓN DE MEZCLAS DE HIDRÓGENO VERDE E HIDROCARBUROS PARA SU EVALUACIÓN ENERGÉTICA Y DE EMISIONES DE CO2

Investigación & Desarrollo
Bolivia, al igual que otros países en desarrollo, enfrenta el reto de reducir su dependencia de combustibles fósiles y avanzar hacia una matriz energética más limpia.
Matías Andrés Carrión-Salazar, Daniel Felipe Sempértegui-Tapia, Cristian Chávez-Toro   +2 more
doaj   +1 more source

Estudio preliminar del aprovechamiento de los residuos agrícolas de cosecha de la caña de azúcar como combustible adicional para calderas bagaceras de Tucumán (Argentina) [PDF]

Revista Industrial y Agrícola de Tucumán, 2017
La necesidad de racionalizar el consumo de combustibles de origen fósil ha llevado a explorar nuevas fuentes de energía. La industria azucarera de Tucumán, Argentina, utiliza principalmente como combustible adicional en calderas de vapor bagaceras el gas
Marcos A. Golato, Enrique A. Feijóo, Federico J. Franck Colombres, Dora Paz, Gerónimo J. Cárdenas   +4 more
doaj  

Efecto del BiFeO₃ en las propiedades del sistema ferroeléctrico libre de plomo K_0.5Na_0.5NbO₃

Boletín de la Sociedad Española de Cerámica y Vidrio, 2014
In order to obtain a multiferroic material, powders and ceramic pieces, of the lead-free ferroelectric (1-x)-x K0.5Na0.5NbO3 (Bi0.8La0.2)FeO3 (KNN-BLFO) (x = 0.005, 0.010, 0.015, 0.020, 0.025) system were prepared using the combustion reaction method ...
Pinza, Billy N., Gaona, Sonia J., Raigoza, C. F. V.   +2 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Historia de los motores de combustión interna

Revista Facultad de Ingeniería Universidad de Antioquia, 2002
En este artículo se hace un recuento cronológico de las tecnologías y eventos que influyeron en la evolución del motor de combustión interna, por medio de la observación de los trabajos realizados por científicos, empíricos e ingenie­ros, cuyos valores ...
Jorge Enrique Gaviria-Ríos, Jorge Hernán Mora-Guzmán, John Ramiro Agudelo   +2 more
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Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

Advanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian, Anh Thi Le, Anh Thi Van Le, Dung My Thi Dang, Tin Chanh Duc Doan, Chien Mau Dang, Martin Bolduc   +6 more
wiley   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

Advanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand, Kaja H. Hiorth, David Gao, Valeri Afanas'ev, Jaakko Akola, Alexander L. Shluger   +5 more
wiley   +1 more source