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Enlace original:
http://repositorio.anid.cl/handle/10533/119764
Marzabal Blancafort, Ainoa
,
Izquierdo Aymerich, Mercè
,
[Análisis de las estructuras textuales de los textos escolares de química en relación a su función docente]
,
Análisis de las estructuras textuales de los textos escolares de química en relación a su función docente
Baker yeast invertase, chemically modified with chitosan, was immobilized on hyaluronic-acid-coated chitin support via polyelectrolyte complex formation. The immobilized enzyme retained 80% of the initial invertase activity. The optimum temperature for sucrose hydrolysis was increased by 5C, and ...
Enlace original:
http://repositoriodigital.uct.cl/handle/10925/707
Autor:
Arias, M.
Concepción, J.
Crivelli, I.
Delgadillo, A.
Díaz Harris, Ramiro
Francois Cifuentes, María Angélica
Gajardo, F.
López, R.
Leiva, A.M.
Loeb, B.
Different strategies to improve the excited state properties of polypyridinic complexes by varying ligand structure and molecular geometry are described. Bidentate and tetradentate ligands based on fragments as dipyrido[3,2-a:2′,3′-c]phenazine, dppz, and pyrazino[2,3-f][1,10]-phenanthroline, ppl,...
Enlace original:
http://repositoriodigital.uct.cl/handle/10925/800
Arias, M.
,
Concepción, J.
,
Crivelli, I.
,
Delgadillo, A.
,
Díaz Harris, Ramiro
,
Francois Cifuentes, María Angélica
,
Gajardo, F.
,
López, R.
,
Leiva, A.M.
,
Loeb, B.
,
[Influence of ligand structure and molecular geometry on the properties of d6 polypyridinic transition metal complexes]
,
Influence of ligand structure and molecular geometry on the properties of d6 polypyridinic transition metal complexes
A new acceptor polypyridinic ligand functionalized with a quinone fragment is reported. The ligand, dipyrido[3,2-a:2′,3′-c]-benzo[3,4]-phenazine-11,16-quinone, Nqphen, was synthesized by condensation of 1,10-phenanthroline-5,6-dione and 2,3-diamino-1,4-naphthoquinone. The syntheses of two rhenium...
Enlace original:
http://repositoriodigital.uct.cl/handle/10925/720
Díaz Harris, Ramiro
,
Reyes, O.
,
Francois Cifuentes, María Angélica
,
Leiva, M.A.
,
Loeb, B.
,
[Synthesis of a new polypyridinic highly conjugated ligand with electron-acceptor properties]
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Synthesis of a new polypyridinic highly conjugated ligand with electron-acceptor properties
This study investigated the effect of DEHP exposure on N-cadherin and α-, β- and p120-catenin immunoreactivities in the rat testis. DEHP was administered by daily gavage to 25-day-old male Sprague-Dawley rats at a dose of 2 g DEHP/5 ml corn oil/kg body weight for 2 days or 7 days. Control rats we...
Enlace original:
http://repositoriodigital.uct.cl/handle/10925/801
Autor:
Díaz Harris, Ramiro
Francois Cifuentes, María Angélica
Leiva, A.M.
Loeb, B.
Norambuena, E.
Yañez, M.
A series of tricarbonyl rhenium(I) complexes of the type fac-[Re 1(CO)3(Ppl)(L)]0/+, where ppl is pyrazino[2,3-f][1,10]phenanthroline, and where L is Cl-, TIO -, 4-(tert-butyl)pyridine (tBu-py), 4-methoxypyridine (MeO-py), 4,4′-bipyridyl (bpy), or 10-(picolin-4-yl)phenothiazine (pptz), were synth...
Enlace original:
http://repositoriodigital.uct.cl/handle/10925/799
Díaz Harris, Ramiro
,
Francois Cifuentes, María Angélica
,
Leiva, A.M.
,
Loeb, B.
,
Norambuena, E.
,
Yañez, M.
,
[Synthesis and characterization of polypiridine-based rhenium(I) complexes with pyrazino[2,3-f][1,10]phenanthroline]
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Synthesis and characterization of polypiridine-based rhenium(I) complexes with pyrazino[2,3-f][1,10]phenanthroline
The nucleophilic aromatic substitution reaction of benzohydrazide derivatives towards 2-chloro-5-nitropyrimidine is used as model system to experimentally and theoretically show that intramolecular hydrogen-bond formation operates as a perturbation that elicits a dual response at the reaction cen...
Enlace original:
https://repositorio.udd.cl/handle/11447/1021
