Browsing by Author "201-0372558"

Now showing items 1-20 of 23

    • Adsorption of oligopeptides on silver nanoparticles: surface-enhanced Raman scattering and theoretical studies 
      Garrido, C.; Aliaga, A. E.; Gómez Jeria, Juan; Clavijo Campos, Ernesto; Campos Vallette, Marcelo; Sánchez Cortés, S. (JOHN WILEY & SONS LTD, 2010-01-18)
      The MRKDV peptide structurally associated with an immunomodulatory protein, as well as model peptides ADEDRDA and LGRGISL with common amino acid residues were studied using surface enhanced Raman scattering (SERS) supported ...
    • An infrared and SEM study of the margins of some german hyperinflation postage stamps 
      Gómez Jeria, Juan; Clavijo Campos, Ernesto; Cárcamo Vega, José; Gutierrez, Sebastian (RJPBCS Research Journal Pharmaceutical, Biological & Chemical Sciences, 2018-04)
      Infrared spectroscopy and scanning electron microscopy (SEM) studies were performed on the margins (the area without printed colors) of a set of German postage stamps dated 1923 and corresponding to the hyperinflationary ...
    • Characterization of sodium alginate and its block fractions by surface-enhanced Raman spectroscopy 
      Campos Vallette, Marcelo; Chandía, Nancy P.; Clavijo Campos, Ernesto; Leal, David; Matsuhiro, Betty; Osorio Román, Igor; Torres, Simonet (JOHN WILEY & SONS LTD, 2009-10-23)
      The surface-enhanced Raman scattering (SERS) of sodium alginates and their hetero- and homopolymeric fractions obtained from four seaweeds of the Chilean coast was studied. Alginic acid is a copolymer of β-D-mannuronic ...
    • Humic acids as molecular assemblers in the surface-enhanced Raman scattering detection of polycyclic aromatic ... 
      Leyton, Patricio; Córdova, I.; Lizama Vergara, P. A.; Gómez Jeria, Juan; Aliaga, A. E.; Campos Vallette, Marcelo; Clavijo Campos, Ernesto; García Ramos, J. V.; Sánchez Cortés, S. (ELSEVIER, 2008-03-11)
      A humic acid (HA) extracted from lignite was successfully used in surface-enhanced Raman scattering SERS experiments as molecular occlusion assembler deposited onto a Ag colloidal surface to detect the polycyclic aromatic ...
    • Interaction of the C-terminal peptide from pigeon cytochrome C with silver nanoparticles. A Raman, SERS and ... 
      Garrido, C.; Aliaga, Avaro E.; Gómez Jeria, Juan; Cárcamo, José J.; Clavijo Campos, Ernesto; Campos Vallette, Marcelo (Elsevier B.V., 2012-01-16)
      The Raman and surface-enhanced Raman scattering (SERS) spectra of the C-terminal peptide of pigeon cytochrome C (PCC87-104), were recorded. This peptide is widely used to study the immune response in vivo. Hydrophobicity ...
    • ISOMERIA CONFORMACIONAL EN EL RADICAL UBRE n-C4Fg 
      Campos Vallette, Marcelo; Clavijo Campos, Ernesto; Gómez Jeria, Juan; Díaz Fleming, Guillermo (Editorial Codelia, Publicaciones Científicas, 1984-11-24)
      On the basis of CNDO and INDO ca1culations, the trans and gauche isomers of the free radical n-perfluorobuthyl are established as the most probable structures in the conformational equilibrium. Spectral differences in ...
    • Poly(complexes) stabilized by acid-base interactions: Poly(4-vinylpyridine) and poly(ethylene-co-maleic acid) 
      Villar, V.; Opazo, A.; Gargallo, L.; Radić, D.; Rios, H.; Clavijo Campos, Ernesto (Taylor and Francis Inc., 1998)
      Interpolymer complex (IC) formation between poly(ethylene-co-maleic acid) and poly(4-vinylpiridine) (P4VPy) has been observed and characterized. Data from viscosity, infrared spectroscopy and thermogravimetric analysis ...
    • Raman and surface enhanced Raman scattering of a black dyed silk 
      Aguayo, T.; Garrido, C.; Clavijo Campos, Ernesto; Gómez Jeria, Juan; Araya Monasterio, C.; Icaza, M.; Espinoza Moraga, F.; Campos Vallette, Marcelo (John Wiley & Sons, 2013)
      The Raman and surface enhanced Raman scattering (SERS) spectra of a black dyed silk sample (BDS) were registered. The spectral analysis was performed on the basis of Raman and SERS spectral data of isolated samples of ...
    • Raman and surface-enhanced Raman scattering in the study of human rotator cuff tissues after shock wave treatment 
      Cárcamo, José J.; Aliaga, Aalvaro E.; Clavijo Campos, Ernesto; Brañes, M.; Campos Vallette, Marcelo (Johm Wiley, 2012)
      Important improvements of diseases of the rotator cuff supraspinatus tendons are seen after shock wave (SW) treatment. Neo-angiogenesis stimulation and hypercellularization result from short periods of treatment. The present ...
    • Raman spectroscopy and x-ray fluorescence in molecular analysis of yellow blocks from the archeological ... 
      Sepúlveda, M.; Gutierrez, S.; Campos Vallette, Marcelo; Clavijo Campos, Ernesto; Walter, P.; Cárcamo, J. J. (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 ...
    • Raman spectroscopy in the diagnosis of the wall painting History of Concepción, Chile 
      Aguayo, T.; Clavijo Campos, Ernesto; Eisner, F.; Ossa Izquierdo, Carolina; Campos Vallette, Marcelo (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 ...
    • Raman study of the shockwave effect on collagens 
      Cárcamo, José J.; Aliaga, Alvaro E.; Clavijo Campos, Ernesto; Brañes, Manuel R.; Campos Vallette, Marcelo (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 ...
    • RAMAN VIBRATIONAL STUDY OF PIGMENTS WITH PATRIMONIAL INTEREST FOR THE CHILEAN CULTURAL HERITAGE 
      Aguayo, T.; Clavijo Campos, Ernesto; Villagrán, A.; Espinosa, F.; Sagüés, F. E.; Campos Vallette, Marcelo (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 ...
    • SERS and theoretical studies of arginine 
      Aliaga, A. E.; Garrido, C.; Leyton, P.; Díaz Fleming, Guillermo; Gómez Jeria, Juan; Aguayo, T.; Clavijo Campos, Ernesto; Campos Vallette, Marcelo; Sánchez Cortés, S. (PERGAMON-ELSEVIER SCIENCE LTD, 2010-01-27)
      Arginine amino acid (Arg) has been vibrationally studied through its infrared, Raman and surfaceenhanced Raman scattering (SERS) spectra, and theoretical calculations. Net charge is used to predict the possibility to ...
    • SERS spectrum and DFT calculations of 6-nitrochrysene on silver islands 
      Carrasco, E. A.; Campos, M.; Clavijo Campos, Ernesto; Leyton, Patricio; Díaz, G.; Koch, Rainer (ELSEVIER SCIENCE BV, 2005-03-17)
      The interaction of 6-nitrochrysene with silver clusters has been modelled by using density functional theory calculations DFT. The chemical adsorption through the nitro group and the corresponding molecular orientation of ...
    • SERS spectrum of red dyes in the Mapuche belts from the beginning of the XXth century 
      Campos Vallette, Marcelo; Rodríguez, M. J.; Chapanoff, M. A.; Clavijo Campos, Ernesto; Gómez Jeria, Juan; Aliaga, A. E.; Jara, G. P.; Celis, F.; Paipa, C.; Leyton, P. (Wiley, 2017)
      Red dyes in seven belts (trariwe) belonging to the Mapuche culture, dated as beginning of the XXth century and stored in Museo Regional de la Araucania, Chile, were studied by using ultraviolet-visible, liquid chromatography ...
    • Surface enhanced Raman scattering study of l-lysine 
      Aliaga, A. E.; Osorio Román, Igor; Garrido, C.; Leyton, P.; Cárcamo Vega, José; Clavijo Campos, Ernesto; Gómez Jeria, Juan; Díaz Fleming, Guillermo; Campos Vallette, Marcelo (2009)
      Different SERS spectra of lysine (Lys) in Ag colloidal surface were obtained. No identical SERS spectra of Lys were observed after a stabilization period, suggesting that a unique conformation and orientation on the metal ...
    • Surface Enhanced Raman Spectrum of Nanometric Molecular Systems 
      Leyton, Patricio; Lizama Vergara, P. A.; Campos Vallette, Marcelo; Becker, María Inés; Clavijo Campos, Ernesto; Córdova Reyes, I.; Vera, M.; Jerez Guevara, Carlos (SOCIEDAD CHILENA DE QUIMICA, 2005-12)
      Surface-enhanced Raman spectroscopy (SERS) was demonstrated to be a useful and sensitive structural spectroscopic tool for the characterization of different types of supramolecular architectures, ideally suited for trace ...
    • Surface-Enhanced Raman Scattering and Theoretical Studies of the C-Terminal Peptide of the beta-Subunit ... 
      Aliaga, A. E.; Aguayo, T.; Garrido, C.; Clavijo Campos, Ernesto; Hevia, E.; Gómez Jeria, Juan; Leyton, P.; Campos Vallette, Marcelo; Sánchez Cortés, S. (JOHN WILEY & SONS INC, 2011-09-08)
      Raman and surface-enhanced Raman scattering (SERS) spectra of the synthetic carboxy terminal peptide of human chorionic gonadatropin b-subunit free of carbohydrate moieties (P37) are reported. The spectral analysis is ...
    • Surface-enhanced Raman scattering and theoretical studies of the C-terminal peptide of the β-subunit human ... 
      Aliaga, A. E.; Aguayo, T.; Garrido, C.; Clavijo Campos, Ernesto; Hevia, E.; Gómez Jeria, Juan; Leyton, P.; Campos Vallette, Marcelo; Sánchez Cortés, S. (2011)
      Raman and surface-enhanced Raman scattering (SERS) spectra of the synthetic carboxy terminal peptide of human chorionic gonadatropin β-subunit free of carbohydrate moieties (P37) are reported. The spectral analysis is ...