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R&D expenditure, market structure and "technological regimes" in chilean manufacturing industry

Crespi, Gustavo;Katz, Jorge (1999-12)

This research submits evidence on the nature of the accumulation of knowledge in Chilean manufacturing industry. Microeconomic data shows that factors which are both firm and the industry specific are relevant....

R&D Expenditures and the role of goverment around the world

Bebczuk, Ricardo N. (2002-06)

The goal of this paper is to conduct an empirical investigation on the macroeconomic determinants of research and development (R&D) expenditures and to assess the role of government in the light of recent dev....

RE-1 silencer of transcription/neural restrictive silencer factor modulates ectodermal patterning during Xenopus development

Olguín, Patricio;Oteíza, Pablo;Gamboa, Eduardo;Gómez Skarmeta, José Luis;Kukuljan, Manuel (2006-03-08)

RE-1 silencer of transcription/neural restrictive silencer factor (REST/NRSF), a transcriptional repressor, binds to the RE-1 element present in many vertebrate genes. In vitro studies indicate that REST/NRSF p....

Reacción de condensación de di-2-piridilmetano con co

Manzur, J.;Garland, María Teresa;Atria, Ana María;Vera, Marco;Spodine, Evgenia (1989)

Se estudió la reacción de condensación de di-2-piridilmatano con los compuestos carbonílicos: benzaldehido, 2, piridilcarboxaldehido, acetona y di-2-piridilcetona, catalizada por sales de los metales de la prim....

Reacción de precios accionarios ante un anuncio de cambio en dividendos

Araya González, Katerina (2006-01)

Reacción entre el dipolo-1,3 enmascarado de una oxazolinona y 1-nitroso-2-naftol. Una nueva síntesis de naftoxazoles

Saitz B., C.;Cañete Molina, Alvaro Félix;Márquez, Amelia;Muñoz, Lucía;Rodríguez, Hernán (1996)

El azometin-ilido de la 2-p-metoxifenil-4-fenil-2-oxazolin-5-ona reacciona por ciclo adición 1,3-dipolar con ambos tautómeros del 1-nitroso-2-naftol. La reacción forma dos naftoxazoles: 2-fenilnafto[1,2-d]oxaz....

Reaction of 4,5,6-triaminopyrimidine and 2,4,5,6-tetraaminopyrimidine with 3-dimethylaminopropiophenones. Synthesis of new 4-aryl-2,3-dihydropyrimido[4,5-b][1,4]diazepines

Insuasty, B.;Insuasty, H.;Quiroga, J.;Saitz B., C.;Jullian, Carolina (2000-03)

Several new 6-amino- and 6,8-dinmino-4-aryl-2,3-dihydropyrimido[4,5-b][1,4]diazepines were obtained from the reaction of 4,5,6-triaminopyrimidine 1a and 2,4,5,6-tetraaminopyrimidine 1b with one equivalent of 3-....

Reaction of 4,5-diamino-3-methyl-1-phenylpyrazole with 3-dimethylaminopropiophenones. Synthesis of new 4-aryl-6-methyl-8-phenyl-2,3-dihydropyrazolo[3,4-b]diazepines and 4-aryl-8-methyl-6-phenyl-2,3-dihydropyrazolo[4,3-b]diazepines

Insuasty, B.;Insuasty, H.;Quiroga, J.;Saitz B., C.;Jullian, Carolina (1999-05)

New 4-Aryl-6-methyl-8-phenyl-2,3-dihydropyrazolo[3,4-b]diazepines and 4-aryl-8-methyl-6-phenyl-2,3-dihydropyrazolo[4,3-b]diazepines were obtained from the reaction of 4,5-diamino-3-methyl-1-phenylpyrazole 1 wit....

Reaction of 5-aminosalicylic acid with peroxyl radicals: Protection and recovery by ascorbic acid and amino acids

López Alarcón, Camilo Ignacio;Rocco, C.;Lissi Gervaso, Eduardo A.;Carrasco, C.;Squella, J. A.;Núñez Vergara, Luis J.;Speisky C., Hernán (2005-10)

Purpose. The aims of the study are to analyze the interaction between 5-aminosalicylic acid (5-ASA) and peroxyl radicals and to evaluate the effect of some endogenous compounds such as ascorbic acid and amino a....

Reaction of singlet molecular oxygen, O-2((1) Delta(g)), with the Cinchona tree alkaloids - Effect of absolute configuration on the total rate constant

Lemp, Else;Günther, Germán;Castro, Rafael;Curitol, Manuel;Zanocco, Antonio L. (2005-10-31)

Detection of O-2((1)Delta(g)) emission, lambda(max) = 1270 nm, following laser excitation and steady-state methods were employed to measure the total reaction rate constant, k(T), and the reactive reaction rate....

Reactions and Responses to Daisy Miller’s Behavior in the Sophisticated Europe

Román Ciero, Fernanda (2010)

Reactive oxygen species inhibit hyposmotic stress-dependent volume regulation in cultured rat cardiomyocytes

Díaz Elizondo, Jessica Alejandra;Chiong Lay, Mario;Rojas Rivera, Diego;Olea Azar, Claudio;Kwon, H. Moo;Lavandero, Sergio (2006-12-01)

Cells have developed compensatory mechanisms to restore cell volume, and the ability to resist osmotic swelling or shrinkage parallels their resistance to necrosis or apoptosis. There are several mechanisms by ....

Reactivity of 1,4-dihydropyridines toward alkyl, alkylperoxyl radicals, and ABTS radical cation

López Alarcón, Camilo Ignacio;Navarrete Encina, P. A.;Camargo, C.;Squella, J. A.;Núñez Vergara, Luis J. (2003-02)

A series of C4-substituted 1,4-dihydropyridines (DHP) with either secondary or tertiary nitrogen in the dihydropyridine ring were synthesized. All of these compounds together with some commercial DHP derivative....

Reactivity of 1,4-dihydropyridines toward SIN-1-derived peroxynitrite

López Alarcón, Camilo Ignacio;Speisky C., Hernán;Squella, J. A.;Olea Azar, Claudio;Camargo, C.;Núñez Vergara, Luis J. (2004-10)

Purpose. To study the reactivity of C4-substituted 1,4-dihydropyridines (1,4-DHP), with either secondary or tertiary nitrogen in the dihydropyridine ring, toward SIN-1-derived peroxynitrite in aqueous media at ....

Reactivity of 3-sulfanyl-1-hexanol and catechol-containing phenolics in vitro

Laurie, V. Felipe;Zúñiga, María C.;Carrasco Sánchez, Verónica;Santos, Leonardo S.;Cañete, Alvaro;Olea Azar, Claudio;Ugliano, Maurizio;Agosin, Eduardo (2012)

Volatile species with thiol functions are important contributors to the flavour of a wide variety of wine types. However, in spite of their importance, their fate during winemaking has not been fully elucidate....

Reactivity of benzohydrazide derivatives towards acetylation reaction. Experimental and theoretical studies

Campodónico, Paola R.;Aliaga, Margarita E.;Santos, José G.;Castro, Enrique A.;Contreras, Renato (2010)

We herein report an experimental and theoretical study on the acetylation reaction of benzohydrazide derivatives towards p-nitrophenyl acetate (NPA). The kinetic data are consistent with a stepwise mechanism ....

Reactivity of C4-indolyl substituted 1,4-dihydropyridines toward superoxide anion (O-2((center dot)under-bar)) in dimethylsulfoxide

Salazar González, Ricardo Andrés;Navarrete Encina, P. A.;Squella, J. A.;Camargo, C.;Núñez Vergara, Luis J. (2009-06)

Reactivity of two new C4-indolyl substituted 1,4-dihydropyridines (1,4-DHPs) toward superoxide anion (O-2) in dimethylsulfoxide (DMSO) is reported. Reactivity was followed by electrochemical and spectroscopic t....

Reactivity of the carbon-carbon double bond towards nucleophilic additions. A DFT analysis

Domingo, Luis R.;Pérez, Patricia;Contreras Ramos, Renato (2004-07-26)

The global and local electrophilicity indexes have been used to characterize the reactivity pattern of the C=C double bond towards nucleophilic addition reactions. A wide family of molecules including ketones, ....

Reactivity of the nitro radical anion from nisoldipine with N-acetylcysteine: EPR spectroscopic and electrochemical evidence

Núñez Vergara, Luis J.;Bollo, S.;Olea Azar, C.;Santander, Paola;Gunckel, S.;Squella, J. A. (1998)

This paper reports the scavenging of the nitro radical anion of nisoldipine by N-acetylcysteine assessed by cyclic volatammetry (CV) and EPR spectroscopic techniques. Studies by CV on the reactivity of the rad....

Real evidence about zeolite as microorganisms immobilizer in anaerobic fluidized bed reactors

Fernández, N.;Montalvo, S.;Fernández Polanco, F.;Guerrero, L.;Cortés, I.;Borja, R.;Sánchez, E.;Travieso, L. (2007)

Using the scanning electronic microscopy, it was observed that natural zeolite possesses excellent physical characteristics as a support medium in anaerobic fluidized bed reactors (AFBR). Samples for biomass an....

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