Browsing by Title Artículos de revistas
Now showing items 533-552 of 2801
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(Elsevier Ltd, 1996)The conformation in 2H2O of 4-thio-L-lyxono-1,4-lactone (1) was studied by nuclear magnetic resonance spectroscopy, by means of homonuclear (J(1(H),1(H))) and heteronuclear (J(1(H),13(C))) coupling constants. The couplings ...
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(TAYLOR & FRANCIS LTD, 2003-11)The diacyl ylide, 3-triphenylphosphoranylidene-2,4-pentanedione (2) can adopt conformations stabilized by ylidic resonance with both acyl oxygens syn- or with one oxygen syn- and the other anti- to cationoid phosphorus, ...
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(Elsevier, 2019)Quinoa proteins (QP) have promise as a potential source of novel food ingredients, and it is of great interest to know how high-intensity ultrasound (HIUS) treatments affect the properties of QP. This work aimed to study ...
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(2007)Ferroelectric liquid crystals bearing a chiral pyrrolidine-type ring were prepared using (-)-(S)-malic acid as a building block. The compounds were characterized using the thermal analysis techniques of DSC and POM, ...
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(TAYLOR & FRANCIS LTD, 2007-01)The diacyl ylid, 3-triphenylphosphoranylidene-2,4-pentanedione 2 can adopt conformations with one oxygen syn- and the other anti- to phosphorus 2a as in the crystal, or with both oxygens syn- to phosphorus 2b. In solution, ...
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(SOCIEDAD CHILENA DE QUIMICA, 2001-09)Activation parameters for the rotation around the methylene-nitrogen single bond found in a series of four 2,2'-disubstituted N-acetyl-N-phenylbenzylamines, dissolved in DMSO-d(6), were measured employing the temperature ...
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(Elsevier, 1997)Conformational analysis of famotidine (FAMO) and some analogues have been performed using AM1 calculations. In addition, conformational analysis were done on the 2-guanidinylthiazole moiety in order to see the effect of ...
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(2013)In ylidic triphenylphosphonium carboxylic esters the ester oxygen can be oriented towards (syn) or away (anti) from phosphorus, but except for small ylidic ester groups, e.g., Me, the anti conformer is dominant. With ...
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(2009)Two Cys-containing analogues of the anticancer drug Kahalalide F are synthesized and conjugated to 20 and 40 nm gold nanoparticles (GNPs). The resulting complexes are characterized by different analytical techniques to ...
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(Kluwer Academic Publishers, 1983)Based on a similarity ring constructed from a substitution probability matrix, we have analyzed the conservation of some amino acid properties in the evolution of proteins. Refractive index and bulkiness are highly conserved, ...
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(VERLAG Z NATURFORSCH, 2002-09)Muehlenbeckia hastulata (J. E.Sm.) Johnst. used mainly for its abortive properties was found active for oxytoxic and analgesic activities in a biological activity screening (oxytoxic, analgesic, antimicrobial, cytotoxic ...
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(ELSEVIER, 2006-10-11)The folk medicine employs Schinus polygamus to treat arthritic pain and cleansing of wounds. As no reports of pharmacological studies supporting its anti-inflammatory and analgesic properties, extracts of increasing polarity ...
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(ASOC QUIMICOS, INST QUIMICO SARRIA, 2005-11)Lead(II) ion selective electrode, ISE, based on plasticized PVC membranes with 1-furoyl 3,3 diethyl thiourea as ionophore and tributylphosphate as plasticizer have been developed. The membrane was applied on a conducting ...
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(Elsevier, 2017)As a novel strategy to overcome some of the therapeutic disadvantages of 6-thioguanine (TG) and 6-mercaptopurine (MP), we propose the inclusion of these drugs in beta cyclodextrin (beta CD) to form the complexes beta CD-TG ...
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(2004)A potentiometric all-solid-state type ion-selective electrode (ISE) for NO3 - was constructed and characterized. It is based on a mixture of tetra-decyl-ammonium nitrate (TDAN) as ionophore, di-butyl phthalate (DBP) as ...
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(SOCIEDAD CHILENA DE QUIMICA, 2004-03)A potentiometric all-solid-state type ion-selective electrode (ISE) for NO3- was constructed and characterized. It is based on a mixture of tetra-decyl-ammonium nitrate (TDAN) as ionophore, di-butyl phthalate (DBP) as ...
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(SOC MEDICA SANTIAGO, 2008-09)Background: Data from the Ministry of Health show that in Chile in 2004, 17% of the population had some form of depression and mood disorders are the tenth cause of disability-adjusted life years (DALY) loss. Aim: To ...
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(Sociedad Chilena de Infectología, 2015)Introducción: El uso racional de antibióticos (ATB) implica conocer su utilización y variaciones de prescripción en el tiempo. Objetivo: Describir y analizar el uso de ATB en la unidad de terapia intensiva (UTI) de adultos ...
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(SOC MEDICA SANTIAGO, 2008-09)Background: Data from the Ministry of Health show that in Chile in 2004, 17% of the population had some form of depression and mood disorders are the tenth cause of disability-adjusted life years (DALY) loss. Aim: To ...
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(Sociedad Chilena de Química, 1984)En este trabajo se entrega una visión general del trabajo con material particulado suspendido en el aire. Sobre la base de los resultados obtenidos en el Grupo de Contaminación Atmosférica de la Facultad de Ciencias Básicas ...
