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Browsing by Subject "Optical properties"

Now showing items 1-20 of 35

ANTIFUNGAL CHITOSAN-BASED FILMS AND COATINGS CONTAINING ESSENTIAL OILS FOR FRUIT APPLICATIONS

Perdones Montero, Ángela (Universitat Politècnica de València, 2016-12-15)

[EN] Chitosan films and coatings have been obtained, by incorporating different essential oils (EO) and using different homogenization conditions of the film forming emulsions, in order to obtain antifungal materials for ...
Desarrollo de snacks de caqui deshidratados para la valoración de destríos postcosecha

García Cases, Ananaí (Universitat Politècnica de València, 2020-09-15)

[ES] El cultivo de caqui ¿Rojo Brillante¿, ha sufrido una gran expansión en los últimos años. Al mismo tiempo, su producción está asociada con una larga cantidad de pérdidas postcosecha que en gran medida se corresponden ...
Desarrollo de un sistema de automatización no destructivo enfocado a la clasificación de pepino en base a sus propiedades ópticas y mecánicas

López Villalobos, Salvador (Universitat Politècnica de València, 2013-04-23)

[ES] El objetivo del trabajo es el desarrollo de un sistema de automatización no destructivo enfocado a la clasificación de pepino en base a sus propiedades ópticas y mecánicas. Para su estudio, los pepinos se almacenaron ...
Determination of refractive index and thickness of a multilayer structure with a single terahertz time domain spectroscopy measurement

Sanjuan, Federico; Bockelt, Alexander; Vidal Rodriguez, Borja (Optical Society of America, 2014-08-01)

A processing technique for the determination of the average refractive index and thickness of a two-layer system is presented. It is based on a single measurement with a standard terahertz time-domain spectrometer and the ...
Development and characterization of active films based on starch-PVA, containing silver nanoparticles

Cano Embuena, Amalia Isabel; Cháfer Nácher, María Teresa; Chiralt, A.; González Martínez, María Consuelo (Elsevier, 2016)

[EN] In order to obtain antimicrobial packaging films, starch-PVA-based films with silver nanoparticles (AgNPs) have been developed and characterized as to their physical and antimicrobial properties and silver release ...
Development of lemon marmalade formulated with new sweeteners (isomaltulose and tagatose): effect on antioxidant, rheological and optical properties

RUBIO-ARRAEZ, SUSANA; Ferrer-Albelda, Carlos; Capella Hernández, Juan Vicente; Ortolá Ortolá, Mª Dolores; Castelló Gómez, María Luisa (Wiley, 2017-04)

The aim of this study was to make lemon marmalades in which sucrose is replaced by sweeteners such as tagatose and isomaltulose. Analyses of Brix, pH, moisture, water activity, antioxidant capacity, optical and rheological ...
Direct hapten-linked multiplexed immunoassays on polycarbonate surface

Tamarit López, Jesús; Morais Ezquerro, Sergi Beñat; Puchades Pla, Rosa; Maquieira Catala, Ángel (Elsevier, 2011-01-15)

Direct hapten-linked multiplexed immunoassay is developed on the polycarbonate surface of standard Digital Versatile Discs (DVDs) for six compounds of environmental concern, as proof of concept. Carboxylated haptens are ...
Edible films and coatings: Structures, active functions and trends in their use

Falguera, Víctor; Quintero, Juan Pablo; Jiménez Marco, Alberto; Muñoz, José Aldemar; Ibarz, Albert (Elsevier, 2011-06)

[EN] Edible films and coatings are thin layers of edible materials applied on food products that play an important role on their conservation, distribution and marketing. Some of their functions are to protect the product ...
Efecto de la humedad relativa y del tiempo de almacenamiento en la calidad de plátano primitivo, cacao y quinoa secos en polvo

López Fernández, Sara (Universitat Politècnica de València, 2016-03-29)

[ES] En este trabajo se analizaron muestras de plátano primitivo (Musa acuminata AA), cacao (Theoborma cacao L.) y quinoa (Chenopodium quinua) deshidratadas, equilibradas en ambientes con dos humedades relativas (11,3% ...
Effect of cellulose nanocrystals on the properties of pea starch-poly(vinyl alcohol) blend films

Fortunati, Elena; Cano Embuena, Amalia Isabel; Cháfer Nácher, María Teresa; González Martínez, María Consuelo; Chiralt, A.; Kenny, J.M. (Springer Verlag (Germany), 2015-11)

[EN] Incorporation of cellulose nanocrystals (CNC) to pea starch-poly(vinyl alcohol) (PVA) (1:2 ratio) blend films was carried out in order to improve their physical properties. Different ratios (1, 3 and 5 % wt) of CNC ...
Effect of porosity on the absorbed, reemitted and transmitted light by a geopolymer metakaolin base

Gasca-Tirado, J. Ramón; Rubio-Ávalos, José Carlos; Muñiz-Villarreal, M. S.; Manzano Ramirez, Alejandro; Reyes-Araiza, José Luis; Sampieri-Bulbarela, S.; Villaseñor-Mora, Carlos; Pérez Bueno, J. J.; Apatiga, L. M.; Amigó Borrás, Vicente (Elsevier, 2011-03-15)

In the present paper, the optical characterization of a geopolymer synthesized at three different temperatures (40, 60 and 90 °C) is described. The results were correlated to the porosity fraction in order to obtain a ...
Elaboración de capas delgadas semiconductoras basadas en óxidos metálicos utilizadas en células fotovoltaicas

Casas Jiménez, Esperanza (Universitat Politècnica de València, 2019-09-25)

[ES] El trabajo de fin de grado que se presenta se basa en la elaboración de capas finas utilizadas en células solares con alta eficiencia. Con ello se pretende obtener células solares eficientes y que sean más económicas ...
ESTUDIO DEL EFECTO DE LAS OPERACIONES DE LIOFILIZACIÓN Y DESHIDRATACIÓN OSMÓTICA SOBRE LA VIABILIDAD DE LOS MICROORGANISMOS Y LAS PROPIEDADES ÓPTICAS Y MECÁNICAS DE UN SNACK DE MANZANA (VAR GRANNY SMITH) CON UN ELEVADO CONTENIDO EN LACTOBACILLUS SALIVARIUS SPP. SALIVARIUS

Morales Benavides, Laura (Universitat Politècnica de València, 2012-01-20)

En este trabajo se ha estudiado el efecto de las operaciones de liofilización y deshidratación osmótica sobre la viabilidad de los microorganismos y las propiedades ópticas y mecánicas de un alimento probiótico desarrollado ...
Eugenol incorporation into thermoprocessed starch films using different encapsulating materials

Talón, Emma; Vargas, Maria; Chiralt Boix, Mª Amparo; González Martínez, María Consuelo (Elsevier, 2019-09)

[EN] The effect of the incorporation of eugenol on the mechanical, barrier and antioxidant properties of compression moulded corn starch films was studied as well as the release kinetics. Free or spray-dried encapsulated ...
Functionalized inorganic nanoparticles used as labels in solid-phase immunoassays

Cháfer Pericás, María Consuelo; Maquieira Catala, Ángel; Puchades, Rosa (Elsevier, 2012-01)

[EN] In recent years, research has focused on the development of different types of inorganic nanoparticles (NPs) to be used as labels in immunoassays instead of fluorophores or organic particles. Basically, inorganic NPs ...
HgGa2Se4 under high pressure: an optical absorption study

Gomis, O.; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Ruiz-Fuertes, Javier; Pérez-González, E.; López-Solano, J.; Bandiello, E.; Errandonea, Daniel; Segura, Alfredo; Rodríguez-Hernández, Placida; Muñoz, A.; Ursaki, Veacheslav; Tiginyanu, Ivan M. (Wiley, 2015-09)

High-pressure optical absorption measurements have been performed in defect chalcopyrite HgGa2Se4 to investigate the influence of pressure on the bandgap energy and its relation with the pressure-induced order-disorder ...
Hydrothermal synthesis of nanostructured Cr-doped hematite with enhanced photoelectrochemical activity

Bouhjar, Feriel; Mollar García, Miguel Alfonso; Chourou, M.L.; Marí, B.; Bessais, Brahim (Elsevier, 2018)

[EN] Using the easily applicable hydrothermal method Cr-doped hematite thin films have been deposited polycrystalline on conductive glass substrates. The hydrothermal bath consisted of an aqueous solution containing a ...
Implication of water activity and glass transition on the mechanical and optical properties of freeze-dried apple and banana slices

Moraga Ballesteros, Gemma; Talens Oliag, Pau; Moraga Ballesteros, María José; Martínez Navarrete, Nuria (Elsevier, 2011-10)

[EN] The interactions between water content, matrix structures and chemical and physical events in complex foods are usually regarded in terms of water activity and glass transition. In this work, the water content and ...
Incorporation of photoactive TiO2 in an aluminosilicate inorganic polymer by ion exchange

Gasca-Tirado, José Ramón; Manzano Ramirez, Alejandro; Villaseñor-Mora, Carlos; Muñiz-Villarreal, M. S.; Zaldivar-Cadena, A. A.; Rubio-Ávalos, José Carlos; Amigó Borrás, Vicente; Nava Mendoza, Rufino (Elsevier, 2012-05-01)

In the present paper, it is described a procedure to ion exchange in an aluminosilicate inorganic polymer (geopolymer) in order to incorporate photoactive TiO 2. Metakaolin base geopolymers synthesized at 40 and 90 °C were ...
Influence of a Compact Fe2O3 Layer on the Photovoltaic Performance of Perovskite-Based Solar Cells

Bouhjar, F.; Mollar García, Miguel Alfonso; Ullah, Shafi; Marí, B.; Bessais, B. (The Electrochemical Society, 2018)

[EN] In this study, uniform and dense iron oxide ¿-Fe2O3 thin films were used as an electron-transport layer (ETL) in CH3NH3PbI3-based perovskite solar cells (PSCs), replacing the Titanium dioxide (TiO2) ETL conventionally ...