Browsing by Title Facultad de Ciencias Químicas y Farmacéuticas
Now showing items 3363-3382 of 4842
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(Sociedade Brasileira de Química, 2010)Substituted chromenos, dihydropyridines and pyridines have been important in the syntheses of compounds having interesting pharmacological properties. Therefore, we found of interest to synthesize chromenopyridines and ...
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On the reduction of 4-oxo-4H-benzopyran-3-carbaldehydes: Global and local electrophilicity patternse (SOCIEDAD CHILENA DE QUIMICA, 2004-03)The theoretical global and local electrophilicity patterns of substituted and chelated 4-oxo-4H-benzopyran-3-carbaldehydes (formylchromones) have been evaluated using the electrophilicity index proposed by Parr et al [J. ...
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(Elsevier Science Publ. B.V., 1993)The clusters of M2[O2CCCo3(CO)9]4-n[O2CR]n, where M is Cr, n= O; where M is Mo, n = 0,1, R is CH3; where M is W, n=0; exhibit allowed transitions with absorvance maxima that correlate with the lowest ionization energy of ...
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(SOCIEDAD CHILENA DE QUIMICA, 2000-12)Time resolved near IR luminescence detection of singlet oxygen, O-2((1)Delta (g)), and steady-state photolysis experiments were performed to study in detail limitations and approaches involved when 9,10-dimethylanthracene ...
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(2012)The formation of paramagnetic species from oncocalyxone A in aprotic medium was confirmed by performing in situ electrochemical-electron spin resonance (E-ESR) experiments. The high delocalization of the radical generated ...
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(BioMed Central, 2014)The type VI secretion system (T6SS) is a virulence factor for many Gram-negative bacteria. Salmonella genus harbors five phylogenetically distinct T6SS loci encoded in Salmonella Pathogenicity Islands (SPIs) SPI-6, SPI-19, ...
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(Sociedad Chilena de Química, 1990)A partir de complejos amoniacales de Co(III) se sintetizaron compuestos que contienen los ligantes quirales L-aspartato y L-malato como segundo ligante. Los compuestos se identificaron por medio de análisis, mediciones de ...
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(Pergamon Press, 1985)The preparation of aminocomplexes of Co(III) containing D-ribose, L-sorbose or D-glucosamine as second ligand is described. Their spectral features and optical activity are reported. Formation in solution of complex ...
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(1975)Study of the visible absorption and circular dichroism spectra of mixed complexes formed by copper(II), an optically active amino acid anion and a phenanthroline or dipyridyl moiety, shows that although the absorption ...
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Optical activity of nickel(II) and copper(II) complexes with L-aminoacids in the UV spectral region (Elsevier Sequoia, 1972)Complexes of Cu(II) and Ni(II) with L-aminoacids have been prepared and their UV spectra and optical activity studied. The results are interpreted in terms of the conformation of the chelated rings. A molecular orbital ...
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(2009)In this work, we present the synthesis and optical study of the binuclear zinc(II) macrocyclic complexes, derived from 4-methyl-2,6-diformylphenol and 1,2-diaminobenzene (H2L). Two zinc macrocyclic complexes with different ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 1989)
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(MDPI, 2021)Green extraction was applied to Argentinean shortfin squid (Illex argentinus) viscera, consisting of a wet pressing method including a drying step, mechanic pressing, centrifugation of the resulting slurry, and oil ...
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(Blackwell Publishing Ltd, 2017)© 2017 Institute of Food Science and Technology This research was focused on the production of polyunsaturated fatty acid concentrates from a farmed rainbow trout (Oncorhynchus mykiss) by-product (i.e. belly muscle). The ...
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(Universidad de Chile, 2017)La administración de biomacromoleculas ha tomado gran importancia en el último tiempo, haciendo necesaria nuevas formas de administración. Como vehículos para estas nuevas estrategias, nanoemulsiones y nanocapsulas han ...
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(Universidad de Chile, 2018)Introducción: Las sondas de nutrición enteral se utilizan como vía para la administración de medicamentos, y su uso incorrecto puede llevar a errores en la medicación, siendo los pacientes pediátricos más vulnerables a ...
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(Universidad de ChileCyberDocs, 2009)El aceite de oliva es un aceite natural que constituye una pieza fundamental de la dieta mediterránea. Se caracteriza por sus propiedades nutricionales y efectos saludables, debido a su alto contenido de antioxidantes y ...
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(Universidad de Chile, 2023)Originaria de México y Guatemala, la Salvia hispanica L, comúnmente conocida como chía, perteneciente a la familia de las Lamiaceae, es una planta herbácea que posee compuestos bioactivos beneficiosos para la salud humana. ...
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(Universidad de ChilePrograma Cybertesis, 2005)Las tradicionales fuentes de gelatina, presentan problemas para las comunidades judías y musulmanas y para mercados preocupados por la encefalopatía espongiforme bovina, por lo que el uso de desechos de pescado puede ...
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(Universidad de Chile, 2020)Actualmente, existe una gran demanda de alimentos naturales con ingredientes que además de aportar nutrientes, ayuden a mejorar la salud. En esta investigación se utilizó la Tara, Caesalpinia spinosa, árbol de leguminosas ...