Browsing by Author "201-0010826"
Now showing items 1-20 of 56
-
(2009)A high-performance liquid chromatography (HPLC) method for the determination of four different flavonoids, rutin, morin, quercetin, and 3-hydroxyflavone in dipalmitoylphosphatidylcholine (DPPC) liposome solutions has been ...
-
(Royal Society of Chemistry, 2017)© 2017 the Owner Societies. 2-Aminothiazolo[4,5-c]porphycenes are a novel class of 22-π electron aromatic porphycene derivatives prepared by click reaction of porphycene isothiocyanates with primary and secondary amines ...
-
(American Chemical Society, 1992-08)Lifetimes of pyrene incorporated into large unilamellar vesicles of dipalmitoylphosphatidylcholine and dioctadecyldimethylammonium chloride increase when the temperature increases prior to the melting temperature of the ...
-
(American Chemical Society, 1989)The exchange between bromide and chloride counterions at the surfaces of dioctadecyldimethylammonium vesicles has been examined through fluorescence quenching experiments. The quenching of the fluorescence of vesicle-incorporated ...
-
(ELSEVIER, 2008-09-15)In the present study we synthesized and purified several 6-O-sucrose monoesters by using classical synthetic methods and stereo-regioselective procedures. The compounds have different alkyl chain lengths, with the number ...
-
(2002)Thermal decomposition of 1,4-dimethylnaphthalene endoperoxide (DMNE) as a source of singlet oxygen was used to measure chemical rate constants, k(R), for reactions between singlet oxygen, O-2((1)Delta(g)), and various ...
-
Determination of the sum of malachite green and leucomalachite green in salmon muscle by liquid ... (ELSEVIER SCIENCE BV, 2005-03-04)A sensitive method for the determination and confirmation of the sum of malachite green (MG) and leucomalachite green (LMG) in salmon muscle has been developed. It is based on the use of an oxidative pre-column reaction ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2003-05)Comparative studies of intrinsic and extrinsic fluorescence of apyrases purified from two potato tuber varieties (Pimpernel and Desiree) were performed to determine differences in the microenvironment of the nucleotide ...
-
(Sociedad Chilena de Química, 1980)
-
(AMER SOC PHOTOBIOLOGY, 1996-06)An equation is proposed for the evaluation of partition or association constants from fluorescence properties (such as spectrum shape or anisotropy) whose values are not linearly related to the solute distribution. The ...
-
(Asoc Quimicos, Inst Quimico Sarria, 2015)The photophysical behavior of 7-amino-3-phenyl-2H-benzo[b][1,4]oxazin-2-one was studied in organic solvents and in aqueous solutions of beta-cyclodextrin using steady-state fluorescence and computational chemistry methods. ...
-
(1992)Diphenylmethyl radicals generated photochemically from 1,1,3,3-tetraphenylacetone (TPA) or 1,ldiphenylacetone (DPA) have been examined in vesicles using laser flash photolysis techniques. Experiments in small vesicles ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2000-08)Chemical modification of potato apyrase suggests that tryptophan residues are close to the nucleotide binding site. K-d values (+/- Ca2+) for the complexes of apyrase with the non-hydrolysable phosphonate adenine nucleotide ...
-
(AMER CHEMICAL SOC, 2000-11-17)The photophysical and photochemical behavior of 1-methyl-3-phenylquinoxalin-2-one (MeNQ) and 3-phenylquinoxalin-2-one (HNQ) in the presence of amines is reported. While HNQ fluorescence shows an auxochromic effect and a ...
-
(2006)A high-performance liquid chromatography (HPLC) method for the determination of 2-(4-(N,N,N-trimethyl)-butyl)-5-dodecylfuryl bromide (DFTA) in dipalmitoylphophatidil-choline (DPPC) liposome solutions has been developed. ...
-
(Dirección de Bibliotecas, Archivos y Museos. Centro Nacional de Conservación y Restauración, 2003)Se desarrolló un protocolo de reconocimiento de barnices empleados en pintura de caballetes utilizando Cromatografía en Placa Fina (TLC). La identificación del barníz se realizó comparando el perfil de elusión cromatográfico ...
-
(Blackwell Publishing Inc., 2018)© 2018 The American Society of Photobiology Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light ...
-
(SOCIEDAD CHILENA DE QUIMICA, 2000-03)The reaction between 2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one and 2,2,6,6-tetramethyl-1-piperidinyl-N-oxide (TEMPO) in benzene as the solvent generates quantitatively 4,4'-bis-[2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one]. ...
-
(1997)The sensitized photo-oxidation of boldine and its permethylated derivative, glaucine, has been studied in several solvents using steady-state kinetic methods. Values of kB, the total rate constant for the reaction between ...
-
(1998)Detection of O,('A,) phosphorescence emission, A,,,, = 1270 nm, following laser excitation and steady-state competitive methods was employed to measure total rate constants, k,, for the reactions of the diuretic furosemide, ...
