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Browsing by Subject "Microwave heating"

Now showing items 1-20 of 22

Amine-functionalized mesoporous silica: A material capable of CO2 adsorption and fast regeneration by microwave heating

Nigar, Hakan; García-Baños, Beatriz; Penaranda-Foix, Felipe L.; Catalá Civera, José Manuel; Mallada, Reyes; Santamaria, Jesus (Wiley, 2016-02)

The surface of ordered mesoporous (MCM-48) silica has been subjected to covalent grafting with silane molecules containing one to three amino groups. The dielectric properties of the materials were studied in detail, and ...
Application of new technologies to cocoa alkalization

Valverde García, Damián (Universitat Politècnica de València, 2020-04-06)

[ES] «Aplicación de nuevas tecnologías a la alcalinización de cacao» es una tesis doctoral centrada, por un lado, en el estudio de los cambios fisicoquímicos y funcionales causados por dos técnicas de alcalinización ...
Caracterización electromagnética de materiales dieléctricos mediante cavidad cilíndrica dual y kit para viales

Fernández Pérez, Samuel (Universitat Politècnica de València, 2023-10-05)

[ES] En este Trabajo Final de Grado (TFG) se presentan diversas técnicas de caracterización electromagnética de materiales dieléctricos en el rango de frecuencia de microondas. Se desarrollan las técnicas de cavidad ...
Chlorophylls and carotenoids of kiwifruit puree are affected similarly or less by microwave than by conventional heat processing and storage

Benlloch Tinoco, María; Kaulmann, Anouk; Corte-Real, Joana; Rodrigo Aliaga, María Dolores; Martínez Navarrete, Nuria; Bohn, Torsten (Elsevier, 2015-11)

[EN] The impact of microwave (1000 W – 340 s) and conventional heat (97 C – 30 s) pasteurisation and storage (4, 10, 22 C for up to 63 d) on total and individual carotenoids and chlorophylls in kiwifruit puree was ...
Dielectric monitoring of the PAN fiber stabilization process

Hofele, Julia; Jung, M.; Link, Guido; Jelonnek, John (Editorial Universitat Politècnica de València, 2019-10-15)

[EN] The production of carbon fibers based on Polyacrylonitrile (PAN) precursor fibers is a very energy intensive process. In order to increase the energy efficiency, microwave plasma processes and, alternatively, ...
DISEÑO Y FABRICACIÓN DE ANTENAS MONOPOLO SINTONIZABLES PARA APLICACIONES DE POTENCIA EN LAS BANDAS ISM

Soriano Gómez, Samuel (Universitat Politècnica de València, 2022-10-03)

[ES] El panorama industrial actual demanda cada vez más energía, lo que implica la importancia de investigar y desarrollar tecnologías capaces de aprovechar al máximo la energía suministrada, es decir, que sean eficientes ...
Dynamic measurement of dielectric properties of food snack pellets during microwave expansion

Gutiérrez Cano, José Daniel; Catalá Civera, José Manuel; Bows, John; Penaranda-Foix, Felipe L. (Elsevier, 2017-06)

[EN] The in situ dielectric properties of a starch-based food pellet have been measured during microwave expansion. A dual-mode cylindrical cavity allowed simultaneous microwave heating and dielectric measurements of a ...
Dynamic Measurement of Dielectric Properties of Materials at High Temperature During Microwave Heating in a Dual Mode Cylindrical Cavity

Catalá Civera, José Manuel; Canós Marín, Antoni Josep; Plaza González, Pedro José; Gutiérrez Cano, José Daniel; García Baños, Beatriz; Penaranda-Foix, Felipe L. (Institute of Electrical and Electronics Engineers (IEEE), 2015-09)

A microwave cavity and heating system for microwave processing and in situ dynamic measurements of the complex permittivity of dielectric materials at high temperatures (~1000ºC) has been developed. The method is based on ...
Effect of Microwave Thawing on Microstructure and Physicochemical Stability of Low Fat White Sauces Made with Soy Protein

Guardeño Expósito, Luis Miguel; Quiles Chuliá, Mª Desamparados; Llorca Martínez, Mª Empar; Pertusa, José; Hernando Hernando, Mª Isabel (2013)

[EN] The microstructural and physicochemical stability of white sauces made with soy protein and modified waxy maize starch was evaluated after subjecting them to a freezing-thawing process in a conventional or microwave ...
Effect of water content on the dynamic measurement of dielectric properties of food snack pellets during microwave

Gutiérrez Cano, José Daniel; Hamilton, Ian E.; Catalá Civera, José Manuel; Bows, John; Penaranda-Foix, Felipe L. (Elsevier, 2018)

[EN] The evolution of dielectric properties of starch-based food pellets with different moisture contents was measured during microwave expansion to determine the effect of water content on the expansion dynamics. Dynamic ...
EFFECTS OF BLANCHING ON GRAPES (VITIS VINIFERA) AND CHANGES DURING STORAGE IN SYRUP

Carranza Concha, José; Camacho Vidal, Mª Mar; Martínez Navarrete, Nuria (Wiley, 2012-02)

This paper studies the effects of conventional and microwave blanching on grapes that are being processed for storage in syrup. An analysis was made of the blanching effects on macro- and micronutrients, as well as on color ...
Features of microwave fired utilitarian stoneware

Santos, Tiago; Santos, Nuno; Gomes, Celso; Hennetier, Luc; Costa, Vítor; Costa, Luís (Editorial Universitat Politècnica de València, 2019-10-15)

[EN] Both high temperature phases and microstructure transformations of stoneware products microwave and conventionally (gas and electric) fired are investigated aiming at a better understanding of factors affecting their ...
Finish drying and surface sterilization of bay leaves by microwaves

Kapoor, Ashish; Sutar, Parag (Editorial Universitat Politècnica de València, 2018-09-07)

[EN] Bay leaves (Laurus nobilis L.) refers to aromatic leaves which are native to minor regions of Asia. In order to extend the shelf life of the bay leaves its water activity and the surface micro-organisms were reduced ...
High Temperature Dielectric Properties of Iron- and Zinc-Bearing Products during Carbothermic Reduction by Microwave Heating

García-Baños, Beatriz; Catalá Civera, José Manuel; Sánchez-Marín, Juan Rafael; Navarrete Algaba, Laura; López-Buendía, Angel M.; Schmidt, Lukas (MDPI AG, 2020-05)

[EN] In this work, the carbothermic reduction of iron- and zinc-bearing products is studied through in situ microwave heating, dielectric properties monitoring, and mass spectrometry up to high temperatures (1000 degrees ...
Innovative microwave technologies for food drying processes

Andres, Ana; Reyes, Ruth; Sansano, Mariola; Alcañiz, D.; Heredia, Ana; Reyes, Elias (Editorial Universitat Politècnica de València, 2018-09-07)

[EN] It is well known that microwaves can assist most of food drying processes; but despite its benefits, microwave energy has not yet been exploited to its potential in the industrial applications. Some of the reasons are ...
Joining of Cu to SS304 by microwave hybrid heating with Ni as interlayer

Tamang, Siddharth; Aravindan, S. (Editorial Universitat Politècnica de València, 2019-10-15)

[EN] Joining of dissimilar pure Copper (Cu) to Stainless Steel (SS304) is necessitated in many industrial applications such as heat exchangers and electrical contacts. Advantages of both the materials such as high ...
Listeria Monocytogenes inactivation kinetics under microwave and conventional thermal processing in a kiwifruit puree

Benlloch Tinoco, María; Pina Pérez, Maria Consuelo; Martínez Navarrete, Nuria; Rodrigo Aliaga, María Dolores (Elsevier, 2014-04)

The inactivation of Listeria monocytogenes in a kiwifruit puree by conventional and microwave heating was studied. Survival curves at three microwave power levels (600 1000 W) and three temperatures (50 60 °C) were ...
MODELADO MULTIFÍSICO DE UN SISTEMA DE CALENTAMIENTO POR MICROONDAS CON ESTADO SÓLIDO Y ANTENAS CON ESTRUCTURA TEM

Miró Merino, Álvaro (Universitat Politècnica de València, 2022-10-14)

[ES] El calentamiento por microondas evoluciona continuamente, donde los dispositivos de estado sólido se imponen sobre los magnetrones debido a sus numerosas ventajas. Bajo este foco, el objetivo del trabajo propuesto es ...
Numerical analysis of microwave heating cavity: Combining electromagnetic energy, heat transfer and fluid dynamics for a NaY zeolite fixed-bed

Nigar, H.; Sturm, G. S. J.; García-Baños, Beatriz; Penaranda-Foix, Felipe L.; Catalá Civera, José Manuel; Mallada, R.; Stankiewicz, A.; Santamaría, J. (Elsevier, 2019-06-05)

[EN] Three-dimensional mathematical model was developed for a rectangular TE10n microwave heating cavity system, working at 2.45 GHz. Energy/heat, momentum equations were solved together with Maxwell's electromagnetic field ...
Quality and acceptability of microwave and conventionally pasteurized kiwifruit puree

Benlloch Tinoco, María; Igual Ramo, Marta; Salvador Alcaraz, Ana; Rodrigo Aliaga, María Dolores; Martínez Navarrete, Nuria (Springer Verlag (Germany), 2014-11)

[EN] The development and optimisation of food preservation processes seem to be necessary in order to address consumer expectations related to secure, fresh-like foods. To this end, the sensory, nutritional and functional ...