Browsing by Title Artículos de revistas
Now showing items 1131-1150 of 2801
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(SOC BRASILEIRA QUIMICA, 2006-12)It is studied the extraction of cadmium( II) ions from acidic aqueous solutions using a stirred transfer cell-type emulsion liquid membrane ( ELM) prepared by dissolving in kerosene, with D2EHPA ( an alkylphosphoric acid) ...
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(SOCIEDAD CHILENA DE QUIMICA, 2001-06)This communication describes the application of a hollow-fiber-type solid supported liquid membrane technique to the study of recovery and enrichment of molybdenum with Alamine 336 (a long chain tertiary amine) from acid ...
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(ELSEVIER SCIENCE BV, 2003-04-10)This is a report on the extraction of molybdenum(VI) ions using a supported liquid membrane, prepared by dissolving in kerosene, the extractant Alamine 336 (a long-chain tertiary amine) employed as mobile carrier. A flat ...
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(Sociedad Chilena de Quimica, 2014)© 2014, Sociedad Chilena de Quimica. All rights reserved. The rotating disk sorptive extraction (RDSE) technique was applied in this study to the extraction of 16 polycyclic aromatic hydrocarbons (PAHs) in real water ...
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(1985)A highly sensitive extraction-spectrophotometric method has been developed for the determination of iron based on the formation of a ternary complex with 1,10-phenanthroline as a primary ligand and picrate as a counter ...
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(Cêntre d'Etude des Plantes Médicinales, 1985)Evaluation of the humectant properties in a group of femenine volunteers was made with characterization of the gel contained in the leaves of the Aloè barbadensis Miller gel (Aloè vera Liné)
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(American Chemical Society, 2017)A very simple method of reductive amination, based on the Leuckart reaction, is reported. This method enables not only the reduction of graphite oxide but also results in reduced graphene oxide functionalized with amine ...
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(TAYLOR & FRANCIS INC, 2005)The synthesis of new eight-membered cycle dibenzo[b,f][1,5]-diazocine-6(5H)-one derivatives 11, 12 was developed. The key step in this synthesis was the intramolecular cyclization of the amino aldehyde precursors 9,10 ...
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(Wiley, 2016)The formation of redox-active, totally organic nanoparticles in water is achieved following a strategy similar to that used to form metal nanoparticles. It is based on two fundamental concepts: i) complexation through ...
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(Elsevier, 2018-06-15)The graphene-AgVO3 nanocomposites (GA30) were synthesized by facile one-step chemical-bath method. SEM and TEM images of the synthesized nanocomposites indicate that this method is possible to anchor the AgVO3 nanoparticles ...
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(Bentham Science, 2016)With the aim of finding new chemical entities based on coumarin and chalcone scaffolds, new hybrid compounds 2-5 were designed and synthesized. The trypanocidal activity of these compounds was tested against the epimastigote, ...
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(Colegio Químico Farmacéutico de Chile, 1982)No tiene
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(Wiley-Blackwell, 2015)
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(AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC,, 2010-11-16)The role of the adenovirus major late upstream transcription from the adenovirus major late and the IV a2 promoters was studied. The transcription initiation site of the IVa2 promoter is located 210 nucleotides upstream ...
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(ELSEVIER SCIENCE BV, 2005-12-23)An improved HPLC method is reported for the determination of rosemary's principal phenolic antioxidants, rosmarinic and carnosic acids, providing a fast and simultaneous determination for both of them by using a solid phase ...
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Fat deterioration in deep fat frying of «french fries» potatoes at restaurant and food shop sector (Instituto de la Grasa, 1999)The objective of this work was to know the deterioration of fats employed in deep frying of «french fries» potatoes at restaurant and food shop sector in Santiago (Chile), before the recent Chilean legislation became ...
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(1998)The oil extracted from the fat-storage organ (fat body) of the bullfrog (Rana catesbeiana) was characterized for its fatty acid composition. The main fatty acids were palmitic (18.1%), stearic (4.1%), myristic (2.7%), oleic ...
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(Wiley, 2020)Toluidine blue O (TBO) is a water-soluble photosensitizer that has been used in photodynamic antimicrobial and anticancer treatments, but suffers from limited solubility in hydrophobic media. In an effort to incrementally ...
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(BLACKWELL PUBLISHING, 2008-07)The conformations of organic compounds determined in the solid state are important because they can be compared with those in solution and/or from theoretical calculations. In this work, the crystal and molecular structures ...
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(SOCIEDAD CHILENA DE QUIMICA, 2000-06)Reaction of CpFe(dppe)I with dithiopyridine in methanol and in presence of NH,PF, affords the new mixed valence complex {[CpFe(dppe)](2)-mu-S-Py}(PF6)(2) (1). Observation of an intervalence electron transfer affords the ...