Results 11 to 20 of about 608 (127)

Influence of MEA Catalytic Layer Location and Air Supply on Open-Cathode Direct Ethanol Fuel Cell Performance

International Journal of Electrochemical Science, 2015
The influence of catalytic layer location on the performance of an open-cathode direct ethanol fuel cell (DEFC) was investigated using three different manufacturing methods for the membrane electrode assembly (MEA). The catalyst loading on both anode and
D.A. Moreno-Jiménez, D.E. Pacheco-Catalán, L.C. Ordóñez   +2 more
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Energy Saving Innovations, Non-Exhaustible Sources of Energy and Long-Run: What Would Happen if we Run Out of Oil?

Revista de Economía del Rosario, 2010
Se formula y resuelve un modelo de cambio tecnológico ahorrador de factores de producción que considera tres factores: capital, trabajo y energía. El modelo cuenta con características específicas con respecto a la interacción n entre la energía (la cual,
Hernando Zuleta
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Position Control of a Maglev System Fed by a DC/DC Buck Power Electronic Converter

Complexity, 2020
In this paper, we solve the problem of position regulation in a magnetic levitation system that is fed by a DC/DC Buck power electronic converter as a power amplifier. We present a formal asymptotic stability proof.
Victor Manuel Hernández-Guzmán, Ramón Silva-Ortigoza, Magdalena Marciano-Melchor   +2 more
doaj   +1 more source

Biological Pretreatment of Mexican Caribbean Macroalgae Consortiums Using Bm-2 Strain (Trametes hirsuta) and Its Enzymatic Broth to Improve Biomethane Potential

Energies, 2018
The macroalgae consortium biomass in the Mexican Caribbean represents an emerging and promising biofuel feedstock. Its biological pretreatment and potential for energetic conversion to biomethane were investigated, since some macroalgae have hard cell ...
Raúl Tapia-Tussell, Julio Avila-Arias, Jorge Domínguez Maldonado, David Valero, Edgar Olguin-Maciel, Daisy Pérez-Brito, Liliana Alzate-Gaviria   +6 more
doaj   +1 more source

Energías renovables y desarrollo económico. Un análisis para España y las grandes economías europeas

El Trimestre Económico, 2017
Antecedentes: Este trabajo evalúa la sostenibilidad del modelo de desarrollo económico español en el periodo 1980-2010. Asimismo, realiza un análisis comparativo con las grandes economías europeas: Alemania, Francia, Italia y Reino Unido.Metodología ...
María Ángeles Caraballo Pou, Juana María García Simón   +1 more
doaj   +1 more source

Robust Flatness Tracking Control for the “DC/DC Buck Converter-DC Motor” System: Renewable Energy-Based Power Supply

Complexity, 2021
The design of a robust flatness-based tracking control for the DC/DC Buck converter-DC motor system is developed in this paper. The design of the control considers the dynamics of a renewable energy power source that plays the role of the primary power ...
Ramón Silva-Ortigoza, Alfredo Roldán-Caballero, Eduardo Hernández-Márquez, José Rafael García-Sánchez, Magdalena Marciano-Melchor, Victor Manuel Hernández-Guzmán, Gilberto Silva-Ortigoza   +6 more
doaj   +1 more source

Carbon-Supported Platinum Molybdenum Electro-Catalysts and Their Electro-Activity Toward Ethanol Oxidation

International Journal of Electrochemical Science, 2011
We synthesized and studied a series of carbon-supported PtMo catalysts with a 20% metal loading as active phase. The analysis was made with three atomic ratios in the active phase, Pt-Mo: 1-1, 7-3 and 3-1.
H.D. Herrera-Méndez, P. Roquero, M.A. Smit, L.C. Ordóñez   +3 more
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Desalación de agua y justicia energética. La Agenda 2030 para el Desarrollo Sostenible

Cuestiones Constitucionales, 2022
Este trabajo explica la importancia de desalar agua de mar ante la escasez de agua en el mundo. Ya que los métodos para obtener agua desalada normalmente consumen energías convencionales, se plantea que dicha actividad sea con energía justa, es decir ...
César Nava Escudero
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Identificación de sitios potencialmente contaminados en Baja California Sur, México: Puerto San Carlos, El Cardonal y Estero San Buto

Sociedad y Ambiente
Dado el deterioro ambiental en nuestro planeta, es imperativo contar con información sobre espacios contaminados en zonas urbanas y rurales, y una de las metodologías más utilizadas es el mapeo y la identificación de sitios potencialmente contaminados ...
Paulina Annette Ortega-Flores, Rodrigo Rangel, Jaqueline Valenzuela Meza   +2 more
doaj   +1 more source

Hydrogen Sulfide Production with a Microbial Consortium Isolated from Marine Sediments Offshore

Journal of Marine Science and Engineering, 2022
Hydrogen, electric energy production, and metal toxic bioremediation are some of the biotechnological applications of sulfate-reducing organisms, which potentially depend on the sulfide produced.
Roberto Briones-Gallardo, Muriel González-Muñoz, Itza García-Bautista, David Valdés-Lozano, Tanit Toledano-Thompson, Erik Polanco-Lugo, Renata Rivera-Madrid, Ruby Valdez-Ojeda   +7 more
doaj   +1 more source