Browsing by Author "201-0372558"
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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 ...
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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 ...