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Listar por palabra clave "High temperature"

Mostrando ítems 1-18 de 18

Caracterización y mejora genética de la termotolerancia de levaduras del género Saccharomyces procedentes de diversos nichos ecológicos

Cerda García-Caro, Roberto de la (Universitat Politècnica de València, 2018-03-02)

[ES] Las levaduras son unos de los microrganismos más versátiles, ampliamente utilizados en diversos procesos biotecnológicos. Esto es debido a sus características metabólicas, como la producción de etanol y la tolerancia ...
Characterization of Crosslinked Poly(vinyl alcohol)-Based Membranes with Different Hydrolysis Degrees for Their Use as Electrolytes in Direct Methanol Fuel Cells

Martinez-Felipe, Alfonso; Moliner Estopiñán, Cristina Elia; Imrie, Corrie Thomas; Ribes Greus, María Desamparados (Wiley, 2012-04-15)

The effect of the degree of hydrolysis of poly(vinyl alcohol) (PVA) substrates on the preparation and properties of crosslinked membranes prepared via esterification with sulfosuccinic acid (SSA) has been studied using ...
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 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 ...
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 ...
Evaluation of Microwave Synthesis of Ceramic Pigments Based on In Situ Dielectric Characterization

García-Baños, Beatriz; Sánchez-Marín, Juan Rafael; Godes, Jose L.; Leonelli, Cristina; Catalá Civera, José Manuel (MDPI AG, 2023-04)

[EN] The application of microwave technology for efficient and environmentally friendly synthesis of ceramic pigments is a successful and rapidly evolving area of research. However, a clear understanding of the reactions ...
Finite element based acoustic analysis of dissipative silencers with high temperature and thermal-induced heterogeneity

Denia Guzmán, Francisco David; Sánchez Orgaz, Eva María; Martínez Casas, José; Kirby, Ray (Elsevier, 2015-05-15)

A mixed finite element model has been derived for the acoustic analysis of perforated dissipative silencers including several effects simultaneously: (1) High temperature and thermal gradients in the central duct and the ...
In Situ Monitoring of Microwave Processing of Materials at High Temperatures through Dielectric Properties Measurement

García Baños, Beatriz; Catalá Civera, José Manuel; Peñaranda Foix, Felipe Laureano; Plaza González, Pedro José; Llorens Vallés, Gabriel (MDPI AG, 2016)

[EN] Microwave-assisted processes have recognized advantages over more conventional heating techniques. However, the effects on the materials¿ microstructure are still a matter of study, due to the complexity of the ...
Mechanical and thermal characterisation of geopolymers based on silicate-activated metakaolin/slag blends

Bernal, Susan A.; Rodríguez Martínez, Erich David; Mejia De Gutierrez, Ruby; Gordillo, Marisol; Provis, John L. (Springer Verlag (Germany), 2011-08)

[EN] This article assesses the effect of mix design parameters on the compressive strength and thermal performance of alkali silicate-activated blends of metakaolin (MK) and granulated blast furnace slag (GBFS). A strong ...
Optical fiber sensors embedded in concrete for measurement of temperature in a real fire test

Bueno Martínez, Antonio; Torres Górriz, Benjamín; Barrera Vilar, David; Calderón García, Pedro Antonio; Lloris, J.; López, M.; Sales Maicas, Salvador (Society of Photo-optical Instrumentation Engineers (SPIE), 2011)

We present the results of a real fire test using optical fiber sensors embedded in concrete samples. The temperature curve used in this experiment is described in the Spanish/European standard UNE-EN 1363-1 temperature ...
Order-disorder processes in adamantine ternary ordered-vacancy compounds

Manjón Herrera, Francisco Javier; Gomis Hilario, Oscar; Vilaplana Cerda, Rosario Isabel; Sans Tresserras, Juan Ángel; Ortiz, H. M. (Wiley-VCH Verlag, 2013-08)

Adamantine ternary ordered-vacancy compounds (OVCs) of the AB(2)X(4) family derive from the zincblende structure of binary AX compounds and share many properties with the chalcopyrite-type ternary ABX(2) compounds. AB(2)X(4) ...
Packaged Optical Sensors Based on Regenerated Fiber Bragg Gratings for High Temperature Applications

Barrera Vilar, David; Finazzi, Vittoria; Villatoro, Joel; Sales Maicas, Salvador; Pruneri, Valerio (Institute of Electrical and Electronics Engineers (IEEE), 2012-01)

We report on temperature sensors based on regenerated fiber Bragg gratings (RFBGs) for measurements up to 1100°C. The annealing process required to regenerate such gratings makes the optical fiber too delicate, thus making ...
Performance of a transmutation advanced device for sustainable energy application

Garcia Hernandez, Carlos Rafael; Rosales, J.; García Fajardo, Laura; Pérez-Navarro Gómez, Ángel; Escrivá, A.; Abánades, A. (Elsevier, 2011-11)

[EN] Preliminary studies have been performed to design a device for nuclear waste transmutation and hydrogen generation based on a gas-cooled pebble bed accelerator driven system, TADSEA (Transmutation Advanced Device for ...
Recent advances in laser surface treatment of titanium alloys

Candel Bou, Juan José; Amigó Borrás, Vicente (Laser Institute of America, 2011-05)

This paper reviews progress over the last five years in the field of laser surface modification of titanium alloys. The authors analyze the effect of new laser technologies and new materials as tools for improving surface ...
Rootstock-mediated physiological and fruit set responses in pepper under heat stress

Gisbert-Mullor, Ramón; Padilla, Yaiza Gara; Calatayud, Ángeles; López Galarza, Salvador Vicente (Elsevier, 2023-02-05)

[EN] An increase in high temperature causes major losses in pepper yields, especially in greenhouses when extending the cropping season to late spring or summer in mild climate areas. Grafting has been identified as a ...
Some Quality Aspects of Persimmon Jam Manufactured by Osmotic Dehydration without Thermal Treatment

Igual Ramo, Marta; Castelló Gómez, María Luisa; Ortolá Ortolá, Mª Dolores; Andrés Grau, Ana María (De GruyterBerkeley Electronic Press, 2011)

The traditional way of preparing persimmon jam produces astringent flavours due to the conversion of insoluble tannins into soluble tannins as a consequence of the high temperatures used in the process. For this reason, a ...
Steam catalytic cracking of naphtha over ZSM-5 zeolite for production of propene and ethene: Micro and macroscopic implications of the presence of steam

Corma Canós, Avelino; Mengual Cuquerella, Jesús; PABLO MIGUEL DOLZ (Elsevier, 2012-02-29)

One option to produce more ethene and propene can be to crack naphtha type fractions in dedicated smaller FCC units. We present here the results obtained for high temperature steam catalytic cracking (SCC) of a representative ...
The role of in-cylinder gas density and oxygen concentration on late spray mixing and soot oxidation processes

Benajes Calvo, Jesus Vicente; Novella Rosa, Ricardo; García Martínez, Antonio; Arthozoul ., Simon Jean Louis (Elsevier, 2011)

An analysis of in-cylinder gas density and oxygen mass concentration (YO 2) impact on the mixing and oxidation processes and the final soot emissions in conventional high temperature diffusive Diesel combustion conditions ...