Search Results - "Paipa, Carolina"

Distribution and pollution assessment of trace elements in marine sediments in the Quintero Bay (Chile) by Parra, Sonnia, Bravo, Manuel A., Quiroz, Waldo, Querol, Xavier, Paipa, Carolina

“…•Assessing levels of pollutant in sediment collected in Quintero Bay Chile.•Comparison of approaches (EF and PCA) to identify possible sources of major and…”
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An experimental study of the structural and vibrational properties of sesquiterpene lactone cnicin using FT-IR, FT-Raman, UV–visible and NMR spectroscopies by Chain, Fernando, Romano, Elida, Leyton, Patricio, Paipa, Carolina, Catalán, César Atilio Nazareno, Fortuna, Mario Antonio, Brandán, Silvia Antonia

“…[Display omitted] •Cnicin was characterized by infrared, Raman, NMR and UV–visible spectroscopies.•The molecular structure of cnicin has a ten member’s ring…”
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FT-IR, FT-Raman, UV–Visible, and NMR spectroscopy and vibrational properties of the labdane-type diterpene 13-epi-sclareol by Chain, Fernando E., Leyton, Patricio, Paipa, Carolina, Fortuna, Mario, Brandán, Silvia A.

“…[Display omitted] •FT-IR, FT-Raman, UV–Visible and NMR spectroscopies were used to study 13-epi-sclareol.•Three stable structures for 13-epi-sclareol by DFT…”
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An experimental and theoretical study of l-tryptophan in an aqueous solution, combining two-layered ONIOM and SCRF calculations by Leyton, Patricio, Brunet, Juan, Silva, Viviana, Paipa, Carolina, Castillo, María Victoria, Brandán, Silvia Antonia

“…[Display omitted] ► A complete assignment of the observed spectral features is proposed. ► The SQM force field was obtained for l-tryptophan zwitterion in…”
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Influence of aluminum oxide on the prebiotic thermal synthesis of Gly-Glu-(Gly-Glu) n polymer by Leyton, Patricio, Zárate, R. Antonio, Fuentes, Sandra, Paipa, Carolina, Gómez-Jeria, Juan S., Leyton, Yessica

“…The effect of the aluminum oxide on the thermal synthesis of the glycine–glutamic acid (Gly-Glu-(Gly-Glu) n polymer is described. The thermal synthesis in the…”
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Aproximación arqueométrica a la presencia de ocres en cementerios del área de Calama durante el Período Formativo Medio (500 AC-100 DC), norte de Chile by Ogalde Herrera, Juan Pablo, Viñales, Freddy, Ogalde, Claudia, Lara, Nelson, Arriazza, Bernardo, Paipa, Carolina, Leyton, Patricio, Campos-Lavallette, Marcelo

“…The ancient funeral rites of the Calama area, northern Chile, involved the use of pigments deposited in Concholepas concholepas shell. We report the analysis…”
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Chemical analyses of colors in the Cabuza phase ceramics (900–1200 CE), Azapa Valley, northern Chile by Ogalde, Juan P., Arriaza, Bernardo, Lara, Nelson, Paipa, Carolina, Leyton, Patricio, Campos-Vallette, Marcelo

“…•A collection of pottery of Cabuza style was found at the Azapa Valley in northern Chile.•We present results of Raman spectroscopy and SEM-EDX of 13 Cabuza…”
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A structural and vibrational study of dehydrofukinone combining FTIR, FTRaman, UV–visible and NMR spectroscopies with DFT calculations by Lizarraga, Emilio, Romano, Elida, Raschi, Ana B., Leyton, Patricio, Paipa, Carolina, Catalán, César A.N., Brandán, Silvia A.

“…[Display omitted] •The vibrational and electronic properties of dehydrofukinone were studied.•Dehydrofukinone was investigated by using FTIR, FTRaman, NMR and…”
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Structural study and characterization of the dipeptide 2-[[5-amino-5-oxo-2-(phenylmethoxycarbonylamino) pentanoyl] amino] acetic acid by vibrational spectroscopy and DFT calculations by Leyton, Patricio, Paipa, Carolina, Berrios, Andrés, Zárate, Antonio, Castillo, María Victoria, Brandán, Silvia Antonia

“…► The dipeptide was characterized by IR and Raman spectroscopies. ► The neutral and zwitterionic forms of the dipeptide were studied by B3LYP calculations. ► A…”
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A structural and vibrational study of dehydrofukinone combining FTIR, FTRaman, UVavisible and NMR spectroscopies with DFT calculations by Lizarraga, Emilio, Romano, Elida, Raschi, Ana, Leyton, Patricio, Paipa, Carolina, CatalA!n, Cesar, BrandA!n, Silvia

“…The vibrational and electronic properties of 4I2,5I2-eremophil-7(11)9-dien-8-one, also known as dehydrofukinone (DHF), have been investigated by using…”
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Vibrational and structural study of onopordopicrin based on the FTIR spectrum and DFT calculations by Chain, Fernando E., Romano, Elida, Leyton, Patricio, Paipa, Carolina, Catalán, César A.N., Fortuna, Mario, Brandán, Silvia Antonia

“…[Display omitted] •Onopordopicrin was studied by infrared and NMR spectroscopies.•The complete assignment of the vibrational spectra was performed.•NMR spectra…”
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Aproximación arqueométrica a la presencia de ocres en cementerios del área de Calama durante el Período Formativo Medio (500 AC-100 DC), norte de Chile by Ogalde, Juan Pablo, Viñales, Freddy, Ogalde, Claudia, Lara, Nelson, Arriaza, Bernardo, Paipa, Carolina, Leyton, Patricio, Campos-Vallette, Marcelo

“…Aquí se presentan los resultados de los análisis de espectroscopía Raman e Infrarroja de pigmentos rojos provenientes de dos contextos fúnebres del cementerio…”
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Vibrational study of caffeic acid phenethyl ester, a potential anticancer agent, by infrared, Raman, and NMR spectroscopy by Raschi, Ana Beatriz, Romano, Elida, Castillo, María Victoria, Leyton, Patricio, Paipa, Carolina, Maldonado, Luis María, Brandán, Silvia Antonia

“…•Structural and vibrational properties of caffeic acid phenethyl ester were studied.•Caffeic acid phenethyl ester was characterized by using IR, Raman and NMR…”
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Influence of aluminum oxide on the prebiotic thermal synthesis of Gly-Glu-(Gly-Glu)(n) polymer by Leyton, Patricio, Zárate, R Antonio, Fuentes, Sandra, Paipa, Carolina, Gómez-Jeria, Juan S, Leyton, Yessica

“…The effect of the aluminum oxide on the thermal synthesis of the glycine-glutamic acid (Gly-Glu-(Gly-Glu)(n) polymer is described. The thermal synthesis in the…”
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Simultaneous determination of iron and ruthenium by preconcentration on sulfopropyl sephadex cation exchanger by Toral, M.Inés, Paipa, Carolina, Narváez, Jessica, Richter, Pablo

“…A new method for the simultaneous determination of iron and ruthenium at ultra-trace levels is proposed. The method is based on the formation of the iron and…”
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