Browsing by Title Facultad de Ciencias
Now showing items 6363-6382 of 8178
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(2014)A material characterization of two artworks discovered in the San Francisco Church, Santiago, Chile, was performed using micro-Raman spectroscopy. Structural painted beams and a wall painting that belong to the same time ...
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(Sociedad Chilena Química, 2016)The main pigments in the painting by the Chilean artist Ignacio Gumucio were identified by using micro-Raman spectroscopy. Three works by the artist, two paintings with wooden stand and a wall painting were analyzed. ...
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(Mimesis Edizioni, 2017)Micro-Raman spectroscopy was used to analyze and identify pigments and determine the palette of color in wall paintings from four churches of the Colonial Period, in the Bolivian highlands. The ancient churches Santiago ...
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(Taylor & Francis, 2017)Raman, surface-enhanced Raman scattering, and shell isolated nanoparticles-enhanced Raman scattering techniques were used to study the indigo-nanoparticle interaction nature. Silver nanoparticles were employed with and ...
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(1989)Raman and infrared spectra of evaporated uranyl superphthalocyanine (UO2SPc) films are reported. Raman spectra of UO2SPc (formed by five isoindoline subunits) depart from the general spectral trends observed in metallated ...
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(Sociedad Chilena de Quimica, 2013)Yellow blocks from the archaeological site Playa Miller 7 (PLM7), on the coast of Atacama Desert in northern Chile, were analyzed by Raman spectroscopy and X-ray fluorescence (XRF) portable. Our results identify for the ...
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(2011)Pigments and fresco-related materials from the wall painting Historia de Concepción by Gregorio De La Fuente in Concepción, Chile were identified by Raman microscopy. The pigments were compared with those obtained from the ...
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(Elsevier, 2012)The Raman spectra (1800–200 cm−1) of isolated dried collagen types I and III were recorded at different times after shockwave (SW) application in aqueous media. SWs were applied in a single session. One week after the ...
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(SOC CHILENA QUIMICA, 2010-08-18)Seven pigments of patrimonial interest for the Chilean artwork were analyzed by means of Raman spectroscopy by using the 632.8 nm excitation laser line. Samples were supplied by the National Center of Conservation and ...
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(2011)Infrared, Raman and surface-enhanced Raman scattering (SERS) spectra of 3-(1-phenylpropan-2-ylamino)propanenitrile (fenproporex) have been recorded. Density functional theory (DFT) with the B3LYP functional was used for ...
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(Elsevier, 2023)Context . Millions of learners worldwide experience mathematics nowadays as an inescapable tool of cognitive abuse and punitive selection. Most traditional teaching thwarts natural human cognitive resources. Problem . We ...
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(Lippicott Williams & Wilkins, 2015)
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(1973)A continuous two‐hour water extraction procedure is proposed instead of the former 14‐hour method to remove the thioglucosides from rapeseed presscake meal (RSM). This new procedure produced a complete removal of isothiocyanates ...
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(2005)Prunus persica has been proposed as a genomic model for deciduous trees and the Rosaceae family. Optimized protocols for RNA isolation are necessary to further advance studies in this model species such that functional ...
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(BLACKWELL, 2007-03)While it is a truism that species rarity is non-randomly distributed across regions, habitats, and taxa, there is little consensus on which factors are the best predictors of low abundances and restricted geographical ...
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(Universidad de Chile, 2016)La personalidad afecta muchos aspectos de la h¡storia de vida, fisiología y la ecología de los individuos donde se pueden resaltar el uso del hábitat, la obtención de recursos, la sobrevivencia por depredación y la ...
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(Universidad de Chile, 2018)
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(2002)This study evaluated the antioxidant defense system of the rat kidney following chronic exposure to red wine rich in flavonols. Both ethanol and antioxidant non-alcoholic wine components, mainly polyphenols, could contribute ...
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(Academic Press, 2001)Fast kinetic methods are used to measure reactions that take place in less time than required to mix the reagents manually and to measure the reaction by usual methods, like UV-visible spectrophotometry and fluorescence. ...
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(Taylor and Francis, 2020)Gomortega keuleis an endangered tree species, the single extant species of a monotypic family. It is safeguarded only in one protected area. Its recruitment and germination are low, possibly in part because rodents prey ...