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Listar por palabra clave "Dielectric properties"

Mostrando ítems 1-20 de 62

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A New Stand-Alone Microwave Instrument for Measuring the Complex Permittivity of Materials at Microwave Frequencies

Gutiérrez Cano, José Daniel; Plaza González, Pedro José; Canós Marín, Antoni Josep; García-Baños, Beatriz; Catalá Civera, José Manuel; Penaranda-Foix, Felipe L. (Institute of Electrical and Electronics Engineers, 2020-06)

[EN] This paper reports the development of a stand-alone and portable instrument designed to measure the complex permittivity of dielectric materials at microwave frequencies. The equipment consists of an in-house single-port ...
A step ahead on efficient microwave heating for kaolinite

Reinosa, J. J.; García-Baños, Beatriz; Catalá Civera, José Manuel; Fernández Lozano, J. F. (Elsevier, 2019-02)

[EN] The thermal evolution of kaolin clay under microwave radiation shows an unexpected large heating rate up to 500 degrees C/min for temperatures > 650 degrees C. Such heating rate is associated with a resistivity drop ...
Análisis de la influencia de las corrientes de macrocelda en la corrosión de losas de hormigón armado

Pacheco Garcia, Erika Juliana (Universitat Politècnica de València, 2021-09-10)

[ES] En la actualidad, el deterioro de las estructuras de hormigón armado debido a la corrosión es un problema de gran importancia en todo el mundo. Las consecuencias del desarrollo de este fenómeno llevan asociados ...
Análisis de las isotermas de sorción de pollo mediante espectrofotometría en radiofrecuencia

Hedrera García, Jessica (Universitat Politècnica de València, 2019-01-09)

[ES] El sector de la carne es uno de los segmentos de crecimiento más rápidos de la economía agraria. La carne de pollo se ha convertido en un alimento básico de una dieta sana y equilibrada y de precio asequible. El ...
Application of microwaves dielectric spectroscopy for controlling long time osmotic dehydration of parenchymatic apple tissue

Castro Giráldez, Marta; Fito Suñer, Pedro José; Fito Maupoey, Pedro (Elsevier, 2011-05)

[EN] Dielectric spectroscopy studies have been performed on fresh and osmotically dehydrated Granny Smith apples. The osmotic treatment consisted on immerse the samples into 65% (w/w) sucrose aqueous solution at 30 degrees ...
Application of microwaves dielectric spectroscopy for controlling osmotic dehydration of kiwifruit (Actinidia deliciosa cv Hayward)

Castro Giráldez, Marta; Fito Suñer, Pedro José; Dalla Rosa, Marco; Fito Maupoey, Pedro (Elsevier, 2011-10)

[EN] Dielectric spectroscopy studies have been performed on fresh and osmotically dehydrated kiwifruits (Actinidia deliciosa cv Hayward). The osmotic treatment consisted on the immersion the samples into 65% (w/w) sucrose ...
Assessment of the dielectric anisotropy in timber using the nondestructive GPR technique

Martínez Sala, Rosa María; Rodríguez Abad, Isabel; Díez Barra, Rafael; Capuz Lladró, Rafael (Elsevier, 2013-01-01)

In the realm of architecture ground-penetrating radar has been used as nondestructive technique to assess physical properties of wood structures in situ. However, a better understanding of the dielectric anisotropy of ...
Caracterización de nuevos electrolitos poliméricos para pilas de combustible aplicables en automoción

Teruel Juanes, Roberto (Universitat Politècnica de València, 2016-01-11)

[EN] Set up of dielectric equipment and characterization of the dielectric properties of various polymers and composites with crystal-liquid properties for its further use as electrolytes for fuel cells for its potential use ...
Caracterización térmica de mezclas compatibles estructuralmente basadas en biomateriales de lignina y poliuretano termoplástico como precursores de fibras de carbono

Muñoz Biendicho, Mario (Universitat Politècnica de València, 2019-09-02)

[ES] La producción de fibras de carbono basadas en lignina reduce el costo y el impacto ambiental asociado a la tradicional fabricación de estas por vía petroquímica. Sin embargo, el procesado de la lignina pura como ...
Desarrollo de materiales cerámicos base circona sinterizados mediante técnicas rápidas no convencionales

Guillén Pineda, René Miguel (Universitat Politècnica de València, 2022-01-17)

[ES] Los avances tecnológicos se encuentran, en algunas ocasiones, limitados debido a la imposibilidad de combinar las excelentes prestaciones de los materiales conocidos con algunas funcionalidades críticas necesarias ...
DESARROLLO DE TÉCNICAS COMBINADAS DE SECADO CON AIRE CALIENTE Y MICROONDAS EN LA PRODUCCIÓN DE FIBRA ALIMENTARIA A PARTIR DE SUBPRODUCTOS CÍTRICOS

Talens Vila, Clara (Universitat Politècnica de València, 2016-01-21)

[EN] Sustainability is nowadays an investment for the future of any economic activity. The current situation of crisis has had an adverse impact in most industries, including the agri-food sector. However, this industry ...
Desarrollo de un sistema de monitorización de liofilización de pollo mediante espectroscopía dieléctrica

Algarra Alexandre, Enrique (Universitat Politècnica de València, 2020-03-11)

[ES] La congelación es un método de conservación muy extendido en la industria cárnica. Además, es una parte importante de otros procesos complejos como la liofilización, que consiste en una deshidratación para reducir la ...
Design and Development of a Multi-Frequency System for Microwave Heating

Santón Pons, Pablo (Universitat Politècnica de València, 2023-01-13)

[ES] La utilización de sistemas de microondas para aplicaciones de calentamiento está muy extendida, principalmente por su uso en el calentamiento doméstico. El volumen de ventas del horno de microondas doméstico refleja ...
Development of a dielectric spectroscopy technique for the determination of key bichemical markers of meat quality

Castro Giráldez, Marta; Dols, Laura; Toldrá Vilardell, Fidel; Fito Maupoey, Pedro (Elsevier, 2011-07-01)

[EN] Dielectric measurements of different standard solutions (nucleotides, nucleosides, lactic acid and myoglobin) were assayed simulating the concentrations of these substances in early postmortem meat. These assays were ...
Dielectric and optical evaluation of high-emissivity coatings for temperature measurements in microwave applications

García-Baños, Beatriz; Chiariotti, Paolo; Napolitano, Rachele; Pandarese, Giuseppe; Navarrete Algaba, Laura; Revel, Gian Marco; Catalá Civera, José Manuel (Elsevier, 2022-07)

[EN] In this work, several commercial high-emissivity coatings have been characterized in terms of emissivity, chemical composition and dielectric properties as a function of temperature, under microwave irradiation. ...
Dielectric Behavior Induced by Vitamin E and Electron Beam Irradiation in Ultra High Molecular Weight Polyethylene

Puertolas, Jose Antoio; Martínez-Morlanez, María José; Teruel Juanes, Roberto; Martinez-Felipe, Alfonso; Oral, Ebru; Pascual, Francisco Javier; Ribes Greus, María Desamparados (Wiley, 2014-09-05)

[EN] Radiation cross-linked ultra high molecular weight polyethylenes (UHMWPEs) have been successfully used as wear resistant bearing surfaces in total joint arthroplasty. A recent development in this field is the ...
Dielectric properties OF 40SiO(2)-40P(2)O(5)-20ZrO(2) /sulfonated styrene-ethylene-butylene-styrene hybrid membranes for proton exchange membrane fuel cells

Pascual-Jose, B.; del Río, C.; Mosa, J.; Ribes-Greus, A. (Elsevier, 2023-04-10)

[EN] The dielectric spectra of a series of hybrid membranes prepared with sulfonated styrene-ethylene-butylenestyrene (sSEBS) as the polymeric matrix, and zirconia-modified phosphosilicate (40SiO2-40P2O5-20ZrO2), as inorganic ...
Dielectric spectroscopy of natural rubber-cellulose II nanocomposites

Ortiz Serna, Mª Pilar; Díaz Calleja, Ricardo; Sanchis Sánchez, María Jesús; Riande, Evaristo; Numes, R.; Martins, A.; Visconte, L. (Elsevier, 2011)

[EN] Nanocomposite materials obtained from natural rubber (NR) reinforced with different amounts of cellulose II nanoparticles (in the range of 0 to 30 phr) are studied by dielectric spectroscopy (DS). For comparative ...
Dielectric, mechanical and thermal properties of ZrO2¿TiO2 materials obtained by microwave sintering at low temperature

Guillén, René M.; Benavente Martínez, Rut; Salvador Moya, Mª Dolores; Penaranda-Foix, Felipe L.; Recio, Paloma; Moreno, Rodrigo; Borrell Tomás, María Amparo (Elsevier, 2021-10-01)

[EN] The sinterability of 3Y-TZP/TiO2 materials using micrometre-sized ZrO2 and nanometre-sized TiO (16 wt%) by one-step fast microwave sintering at low temperature (1200¿1300C) was investigated. Firstly, in situ ...
Dielectrical, microstructural and flow properties of sauce model systems based on starch, gums and salt

Guardeño Expósito, Luis Miguel; Catalá Civera, José Manuel; Plaza González, Pedro José; Sanz, T.; Salvador, A.; Fiszman, S.; Hernando Hernando, Mª Isabel (Elsevier, 2010-05)

The dielectric properties of salted systems based on different hydrocolloids (native or modified starches, or on iota, lambda, or kappa carrageenan) as models for microwaveable white sauces were studied. Microstructural ...