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Listar por palabra clave "Spectroscopy"

Mostrando ítems 21-40 de 46

High-Grade Glioma Treatment Response Monitoring Biomarkers: A Position Statement on the Evidence Supporting the Use of Advanced MRI Techniques in the Clinic, and the Latest Bench-to-Bedside Developments. Part 2: Spectroscopy, Chemical Exchange Saturation, Multiparametric Imaging, and Radiomics

Booth, Thomas C.; Wiegers, Evita C.; Warnert, Esther A. H.; Schmainda, Kathleen M.; Riemer, Frank; Nechifor, Ruben E.; Keil, Vera C.; Hangel, Gilbert; Figueiredo, Patrícia; Álvarez-Torres, María del Mar; Henriksen, Otto M. (Frontiers Media SA, 2022-02-28)

[EN] ObjectiveTo summarize evidence for use of advanced MRI techniques as monitoring biomarkers in the clinic, and to highlight the latest bench-to-bedside developments. MethodsThe current evidence regarding the potential ...
High-pressure study of ScVO4 by Raman scattering and ab initio calculations

Panchal, V.; Manjón Herrera, Francisco Javier; Errandonea, D.; Rodriguez-Hernandez, P.; López-Solano, J.; Muñoz, A.; Achary, S.N.; Tyagi, A.K. (American Physical Society, 2011-02-25)

We report results of experimental and theoretical lattice-dynamics studies on scandium orthovanadate up to 35 GPa. Raman-active modes of the low-pressure zircon phase are measured up to 8.2 GPa, where the onset of an ...
Implementación de algoritmos de extracción precisa de parámetros de materiales mediante THz-TDS

García Sánchez, Vicente (Universitat Politècnica de València, 2015-02-17)

En este trabajo, se realiza la implementación de algoritmos para la extracción precisa de parámetros de materiales, mediante Espectroscopía en el Dominio Temporal en la banda de Terahercios (THz-TDS). Ésta, es una técnica ...
Innovative Design of Heterogeneous Catalysts with Improved CO2 Hydrogenation Performance

Cored Bandrés, Jorge (Universitat Politècnica de València, 2023-03-30)

[ES] El cambio climático es una de las amenazas de nuestro tiempo. Los gases de efecto invernadero, como el CO2, son los principales causantes de este fenómeno, siendo necesario disminuir urgentemente sus emisiones. En ...
Integrated Spectroscopic Sensor fabricated in a novel Si3N4 platform

Micó Cabanes, Gloria (Universitat Politècnica de València, 2021-01-17)

[ES] Esta tesis se ha centrado en el modelado, diseño y demostración experimental de un sensor espectroscópico integrado basado en un AWG (del inglés Arrayed Waveguide Grating). El dispositivo ha sido diseñado y fabricado ...
Metal-Specific Reactivity in Single-Atom Catalysts: CO Oxidation on 4d and 5d Transition Metals Atomically Dispersed on MgO

Sarma, Bidyut B.; Plessow, Philipp N.; Agostini, Giovanni; Concepción Heydorn, Patricia; Pfänder, Norbert; Kang, Liqun; Wang, Feng R.; Studt, Felix; Prieto González, Gonzalo (American Chemical Society, 2020-09-02)

[EN] Understanding and tuning the catalytic properties of metals atomically dispersed on oxides are major stepping-stones toward a rational development of single-atom catalysts (SACs). Beyond individual showcase studies, ...
Microwave-assisted synthesis and spectroscopic properties of novel pyridine-based fluorescent molecular probes

Fiedor, Pawel; Ortyl, Joanna; Galek, Mariusz (Editorial Universitat Politècnica de València, 2019-11-04)

[EN] Fluorescent molecular probes become interesting analytical tools in determination and labeling of chemical compounds and physical properties such as viscosity and polarity. Currently known fluorescent molecular probes ...
New polymorph of InVO4: A high-pressure structure with six-coordinated vanadium

Errandonea, Daniel; Gomis Hilario, Oscar; García-Domene, B.; Pellicer Porres, Julio; Katari, V.; Achary, S. N.; Tyagi, A. K.; Popescu, C. (American Chemical Society, 2013-11-04)

A new wolframite-type polymorph of InVO4 is identified under compression near 7 GPa by in situ high-pressure (HP) X-ray diffraction (XRD) and Raman spectroscopic investigations on the stable orthorhombic InVO4. The structural ...
Nondestructive assessment of freshness in packaged sliced chicken breasts using SW-NIR spectroscopy

Grau Meló, Raúl; Sánchez Salmerón, Antonio José; Girón Hernández, Lunier Joel; Ivorra Martínez, Eugenio; Fuentes López, Ana; Barat Baviera, José Manuel (Elsevier, 2011-01)

A technique was developed to predict the freshness of packaged sliced chicken breast employing a nondestructive visible and short-wavelength near-infrared (SW-NIR) spectroscopy method. Spectra were recorded at 0, 7 and ...
Parallel Recording of Single Quantum Dot Optical Emission Using Multicore Fibers

Muñoz-Matutano, Guillermo; Barrera Vilar, David; Fernandez-Pousa, C. R.; Chulia-Jordan, R.; Martinez-Pastor, J.; Gasulla Mestre, Ivana; Seravalli, L.; Trevisi, G.; Frigeri, P.; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers (IEEE), 2016-06-01)

Single Indium Arsenide Quantum Dot emission spectra have been recorded using a four-core, crosstalk-free, multicore fiber placed at the collection arm of a confocal microscope. We developed two different measurement set-ups ...
Phase stability and electronic structure of iridium metal at the megabar range

Monteseguro, V.; Sans-Tresserras, Juan Ángel; Cuartero, V.; Cova, F.; Abrikosov, I.A.; Olovsson, W.; Popescu, Catalin; Pascarelli, S.; Garbarino, G.; Jonsson, H.J.M.; Irifune, T.; ERRANDONEA, DANIEL (Nature Publishing Group, 2019-06-20)

[EN] The 5d transition metals have attracted specific interest for high-pressure studies due to their extraordinary stability and intriguing electronic properties. In particular, iridium metal has been proposed to exhibit ...
Photoattachment of thiolated DNA probes on SU-8 spin-coated Blu-ray disk surfaces for biosensing

Peris Chanzá, Ernesto José; Bañuls Polo, María-José; Puchades, Rosa; Maquieira Catala, Ángel (Royal Society of Chemistry, 2013)

[EN] A methodology to modify Blu-ray disk (BD) surfaces by spin-coating an SU-8 epoxy photoresist is evaluated, to create a hybrid material with new functionalities. The optical performance of the new film surface disk is ...
Preliminary Study using Visible and SW-NIR Analysis for Evaluating the Loss of Freshness in Commercially Packaged Cooked Ham and Turkey Ham

Girón Hernández, Lunier Joel; Ivorra Martínez, Eugenio; Sánchez Salmerón, Antonio José; Fernández Segovia, Isabel; Barat Baviera, José Manuel; Grau Meló, Raúl (Czech Academy of Agricultural Sciences, 2014-07)

[EN] A non-destructive Vis-NIR spectroscopy (400–1000 nm) method was developed to evaluate the loss of freshness of sliced and commercially packaged cooked ham and turkey ham without any sample manipulation. The spectra ...
Proposal of an FTIR Methodology to Monitor Oxidation Level in Used Engine Oils: Effects of Thermal Degradation and Fuel Dilution

Macian Martinez, Vicente; Tormos, B.; Gomez Estrada, Yesid Antonio; Salavert Fernández, José Miguel (2013)
Proposal of an FTIR Methodology to Monitor Oxidation Level in Used Engine Oils: Effects of Thermal Degradation and Fuel Dilution

Macian Martinez, Vicente; Tormos, B.; Gomez Estrada, Yesid Antonio; Salavert Fernández, José Miguel (Taylor & Francis, 2012-11-01)

This article describes a procedure, based on ASTM standards D7214 and E2412, that has been defined to improve quantification of oil oxidation in used engine oils. Taking into account typical problems that can be found in ...
Seed-free electrodeposition of ZnO bi-pods on electrophoretically-reduced graphene oxide for optoelectronic applications

Pruna, Alina Iuliana; Reyes Tolosa, María Dolores; Pullini, D.; Hernández Fenollosa, María de los Ángeles; Busquets Mataix, David Jerónimo (Elsevier, 2015-03)

[EN] Large areas of reduced graphene oxide (rGO) films were obtained by electrophoretic deposition onto insulating glass substrate. ZnO nanostructures were directly grown on the rGO films by single-step electrodeposition ...
Signal Stitching Algorithm for Faster Acquisition of Long Traces in Terahertz Time Domain Spectroscopy

Báez-Chorro, Miguel Ángel; Vidal Rodriguez, Borja (Institute of Electrical and Electronics Engineers, 2022-05-01)

[EN] In this paper, an iterative algorithm is developed to combine time shifted traces in pulsed terahertz time domain spectroscopy (THz-TDS). This method intends to correct errors due to mechanical sampling in the trailing ...
Silicon nanoparticles as Raman scattering enhancers

Rodríguez, Marie-Isabelle; Shi, Lei; Lu, Xiaotang; Korgel, Brian; Alvarez -Puebla, Ramon; Meseguer Rico, Francisco Javier (Royal Society of Chemistry, 2014-06-07)

[EN] In this communication we demonstrate the large amplification values of the Raman signal of organic molecules attached to silicon nanoparticles (SiNPs). Light induced Mie resonances of high refractive index particles ...
Simultaneous high-speed spectroscopy and 2-color pyrometry analysis in an optical compression ignition engine fueled with OME X -diesel blends

Pastor, José V.; García Martínez, Antonio; Micó, Carlos; De Vargas Lewiski, Felipe (Elsevier, 2021-08)

[EN] E-fuels are a very attractive way for improving the well-to-wheel emissions of CO 2 in internal combustion engines. In the particular case of compression ignition engines, the Oxymethylene dimethyl ether (OME X ), an ...
Spectroelectrochemical study on the copolymerization of o-aminophenol and aminoterephthalic acid

Abidi, Maali; López-Bernabeu, Sara; Huerta, Francisco; Montilla, Francisco; Besbes-Hentati, Salma; Morallón, Emilia (Elsevier, 2017-06)

[EN] The electrochemical copolymerization of aminoterephthalic acid (ATA) and o-aminophenol (OAP) was carried out on platinum electrodes in acidic medium. The obtained material, poly (ATA-co-OAP), can be deposited by cyclic ...