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Qualitative effects of inducible defenses in trophic chains

Ramos Jiliberto, Rodrigo;Garay Narváez, Leslie (2007)

By means of qualitative techniques we analyze the consequences of inducible defenses of species embedded in trophic chains on the community stability and responses of population equilibrium densities to press p....

Qualitative properties of ground states for singular elliptic equations with weights

Pucci, Patrizia;García-Huidobro, Marta;Manásevich, Raúl;Serrin, James (2006-01)

In a series of papers the question of uniqueness of radial ground states of the equation Delta u + f(u) = 0 and of various related equations has been studied. It is remarkable that throughout this work (except ....

Quality Assessment of Published Health Economic Analyses from South America

Machado, Marcio;Iskedjian, Michael;Einarson, Thomas R. (2006-05)

BACKGROUND: Health economic analyses have become important to healthcare systems worldwide. No studies have previously examined South Americaâ€™s contribution in this area. OBJECTIVE: To survey the literature....

Quality enhancement of canned sardine (Sardina pilchardus) by a preliminary slurry ice chilling treatment

Losada, Vanesa;Rodríguez, Alicia;Ortiz, Jaime;Aubourg, Santiago P. (2006-07)

The slurry ice technology has shown wide advantages when employed as a chilling method for marine species instead of the traditional flake ice storage. In the present work, the use of slurry ice was evaluated f....

QUALITY KINETICS GRAPESEED OIL MODEL / MODELO CINETICO DE LA CALIDAD DE ACEITE DE PEPITA DE UVA

Castro Montero, Eduardo Segundo;Masson Salaüé, Lilia;Valenzuela Lozano, Fernando (1990-07)

The accelerated test of Schaal was applied to chilean commercial grapeseed oil, in order to know the deterioration of its quality. The aged samples were analized for sensory evaluation in scale 1 to 10, consid....

Quality of life with docetaxel plus cisplatin and fluorouracil compared with cisplatin and fluorouracil from a phase III trial for advanced gastric or gastroesophageal adenocarcinoma: The V-325 study group

Ajani, Jaffer A.;Moiseyenko, Vladimir M.;Tjulandin, Sergei;Majlis, Alejandro;Constenla, Manuel;Boni, Corrado;Rodrigues, Adriano;Fodor, Miguel;Chao, Yee;Voznyi, Edouard;Awad, Lucile;Van Cutsem, Eric (2007)

Purpose Therapy of patients with advanced gastric or gastroesophageal junction cancer should provide symptom relief and improve quality of life ( QOL) because most patients are symptomatic at baseline. Using va....

Quality oriented fruit breeding: Peach [Prunus persica (L.) Batsch]

Infante, Rodrigo;Martínez Gómez, P.;Predieri, S. (2008-04)

Promising new tools for peach fruit quality breeding have been revised in this work. These tools included fruit quality evaluation through physical, chemical and sensorial parameters and post-harvest storage ev....

Quantifying the costs of investment limits for Chilean pension funds

Berstein, Solange M.;Chumacero, Rómulo A. (2006-03)

Since the creation of the Chilean pension fund industry in 1981, pension fund administrators have not been free to choose their investment portfolios because of stringent regulation of investment limits. The di....

Quantitative characterization of group electrophilicity and nucleophilicity for intramolecular Diels–Alder reactions

Soto-Delgado, Jorge;Domingo, Luis R.;Contreras, Renato (2010-05-17)

In a previous work (L. R. Domingo, M. J. Aurell, P. Perez and R. Contreras, Tetrahedron 2002, 58, 4417) we proposed that the difference in global electrophilicity index be taken as a measure of the polarity a....

Quantitative determination of flesh mealiness in peach [Prunus persica L. (Batch.)] through paper absorption of free juice

Infante, Rodrigo;Meneses, C.;Rubio, P.;Seibert, E. (2008)

A simple and rapid method was developed for quantitative determination of juiciness in peach flesh based on the absorption of free juice with ordinary absorbent paper after a flesh sample is squeezed by two m....

Quantitative genetic basis for resistance to Caligus rogercresseyi sea lice in a breeding population of Atlantic salmon (Salmo salar)

Lhorente, Jean Paul;Gallardo, José A.;Villanueva, Beatriz;Araya, Angélica M.;Torrealba, Débora A.;Toledo, Ximena E.;Neira, Roberto (2012)

A total of 1511 Atlantic salmon smolts representing 75 full-sib and 40 half-sib families from the Antares S.A. breeding programwere challengedwith Caligus rogercresseyi in order to assess the quantitative gene....

Quantitative local environment characterization in amorphous oxides

Amézaga, Alexis;Holmström, Erik;Lizárraga, Raquel;Menéndez Proupin, Eduardo;Bartolo Pérez, P.;Giannozzi, Paolo (2010-01-27)

We perform density-functional-theory calculations of electronic core levels to obtain the tellurium x-ray photoelectron spectra in the amorphous solar-energy materials CdTeOx x=0.2, 1, 2, and 3 . We quantify ....

Quantitative reverse transcription polymerase chain reaction analysis of Vibrio cholerae cells entering the viable but non-culturable state and starvation in response to cold shock

González Escalona, Narjol;Fey, Axel;Hofle, Manfred G.;Espejo, Romilio T.;Guzmán, Carlos A. (2006-04)

We performed a comparative analysis of the Vibrio cholerae strain El Tor 3083 entering the viable but non-culturable (VBNC) state and starvation after incubation in artificial seawater (ASW) at 4 and 15 degrees....

Quantity component of the effectiveness of seed dispersal by birds in the temperate rainforest of Chiloé, Chile

Salvande, Miguel;Figueroa, Javier A.;Armesto, Juan J. (2011)

The quantity component of the disperser effectiveness of resident birds during the autumn-winter period has not yet been detailed in temperate rainforests of South America. In this study, the potentially frugi....

Quantum Chemical Approach to the Relationship Between Molecular Structure and Serotonin Receptor Binding Affinity

Gómez Jeria, Juan Sebastián;Morales Lagos, D. R. (1983-09-13)

We have analyzed the dependence of the serotonin receptor binding affinity on the atomic net charges, superdelocalizabilities, mass, and moment of inertia in a group of indole derivatives. The approaches empl....

Quantum-chemical, NMR and X-ray diffraction studies on (±)-1-[3,4-(methylenedioxy)phenyl]-2-methylaminopropane

Zapata Torres, Gerald;Cassels, Bruce K.;Parra Mouchet, Julia;Mascarenhas, Yvonne P.;Ellena, Javier;De Araujo, A. S. (2008-06)

Time-averaged conformations of ( )-1-[3,4-(methylenedioxy)phenyl]-2-methylaminopropane hydrochloride (MDMA, ‘‘ecstasy’’) in D2O, and of its free base and trifluoroacetate in CDCl3, were deduced from their 1H N....

Quantum-Chemical Structure-Activity Relationships in Carbamate Insecticides

Gómez Jeria, Juan Sebastián;Ojeda Vergara, Mario;Donoso Espinoza, Carlos (1995-01-10)

A non-empirical Quantitative Structure-Activity Relationship (QSAR) method is employed to analyze the reversible complex formation during the reaction of phenyl-N-methylcarbamates with the enzyme acetylcholin....

Quantum-chemical structure-affinity studies on kynurenic acid derivatives as Gly/NMDA receptor ligands

Gómez Jeria, Juan Sebastián;Lagos-Arancibia, Luis (1998-09-28)

A quantum-chemical structure]affinity relationship for kynurenic acid derivatives KA. acting at the GlyrNMDA site is presented. The results of this study strongly suggest that these molecules bind to this si....

QUANTUM CHEMICAL STUDY OF ELECTRONIC-STRUCTURE AND RECEPTOR-BINDING IN OPIATES

Gómez Jeria, Juan Sebastián;Sotomayor, P. (1988)

A Quantitative Structure-Activity Relationship study for a group of opiates interacting with the mu receptor was carried out. The study consisted in searching a relationship between the drug-receptor equilibr....

Quantum-Chemieal Modeling of Cateeholamine Storage Including Continuum Solvent Effeets

Gómez-Jeria, Juan Sebastián;Parra-Mouchet, J.;Morales-Lagos, D. (1990-01-30)

A model for catecholamine storage in vesicles is analyzed within the ,CRI CNDO/2 approach inc1uding conlinuum solvenl crfcels. The model considers lhe approach of calionic norepinephrine (NE) 10 a positively ....

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