Incentivos públicos de nueva generación para la atracción de inversión extranjera directa (IED) en Centroamérica

Incluye Bibliografía

Left ventricular sphericity index predicts systolic dysfunction in rats with experimental aortic regurgitation

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Seal, replacement or monitoring amalgam restorations with occlusal marginal defects? Results of a 10-year clinical trial

The aim of this prospective and blind clinical trial was to assess the effectiveness of sealing localized marginal defects of amalgam restoration that were initially scheduled to be replaced. A cohort of twenty six patients with 60 amalgam restorations (n=44Class I and n=16Class II), that presented marginal defects deviating from ideal (Bravo) according to USPHS criteria, were assigned to either sealing or replacement groups: A: sealing n=20, Replacement n=20, and no treatment (n=20). Two blind examiners evaluated the restorations at baseline (K=0.74) and after ten years (K=0.84) according with USPHS criteria, in four parameters: marginal adaptation (MA), secondary caries (SC), marginal staining (MS) and teeth sensitivity (TS). Multiple comparison of restorations degradation/upgrade was analyzed by Friedman test and the comparisons within groups were performed by Wilcoxon test. After 10 years, 44 restorations were assessed (73.3%), Group A: n=14 and Group B: n=16; and Group C: n=14 sealing and replacement amalgam restorations presented similar level of quality in MA (p=0.76), SC (p=0.25) and TS (p=0.52), while in MS (p=0.007) presented better performance in replacement group after 10-years. Most of the occlusal amalgam restorations with marginal gaps showed similar long term outcomes than the restorations were sealed, replaced, or not treated over a 10-year period. Most of the restorations of the three groups were clinically acceptable, under the studied parameters. All restorations had the tendency to present downgrade/deterioration over time.

Prone positioning attenuates TNF-alpha production in rabbits with lung injury under protective conventional mechanical ventilation (CMV)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Influence of Ozone Gas and Ozonated Water Application to Dentin and Bonded Interfaces on Resin-Dentin Bond Strength

Purpose: To assess the influence of ozone gas and ozonated water application to prepared cavity and bonded interfaces on the resin/dentin bond strength of two-step etch-and-rinse adhesive systems (Adper Single Bond 2 [SB2] and XP-Bond [XP]). Materials and Methods: Sixty extracted human third molars were sectioned perpendicularly to their long axes to expose flat occlusal dentin surfaces. In experiment 1, dentin was treated with ozone before the bonding procedure, while in experiment 2, ozone was applied to resin/dentin bonded interfaces. In experiment 1, dentin surfaces were treated either with ozone gas (2100 ppm), ozonated water (3.5 ppm), or distilled water for 120 s, and then bonded with SB2 or XP according to manufacturers' instructions. Hybrid composite buildups were incrementally constructed and the teeth were sectioned into resin-dentin sticks (0.8 mm(2)). In experiment 2, dentin surfaces were first bonded with SB2 or XP, composite buildups were constructed, and bonded sticks obtained. The sticks were treated with ozone as previously described. Bonded sticks were tested under tensile stress at 1 mm/min. Silver nitrate impregnation along the resin/dentin interfaces was also evaluated under SEM. Results: Two-way ANOVA (adhesive and ozone treatment) detected no significant effect for the cross-product interaction and the main factors in the two experiments (p > 0.05), which was confirmed by the photomicrographs. Conclusion: Ozone gas and ozonated water used before the bonding procedure or on resin/dentin bonded interfaces have no deleterious effects on the bond strengths and interfaces.

Design and synthesis of a new coumarin-based 'turn-on' fluorescent probe selective for Cu+2

The novel coumarin-based 'turn-on' fluorescent probe (E)-3-(2,5-dimethoxybenzylideneamino)-7-hydroxy-2H-chromen-2-one (MGM) was designed, synthesized, and characterized. This compound shows high selectivity for Cu+2, combined with a large fluorescence enhancement upon binding to Cu2+. Benesi-Hildebrand and Job plots demonstrate that the stoichiometry of the Cu+2 complex formed is 2:1. Preliminary studies employing epifluorescence microscopy demonstrated that Cu+2 could be imaged in human neuroblastoma SH-SY5Y cells treated with MGM. (c) 2012 Elsevier Ltd. All rights reserved.

Link prediction using a probabilistic description logic

Due to the growing interest in social networks, link prediction has received significant attention. Link prediction is mostly based on graph-based features, with some recent approaches focusing on domain semantics. We propose algorithms for link prediction that use a probabilistic ontology to enhance the analysis of the domain and the unavoidable uncertainty in the task (the ontology is specified in the probabilistic description logic crALC). The scalability of the approach is investigated, through a combination of semantic assumptions and graph-based features. We evaluate empirically our proposal, and compare it with standard solutions in the literature.

Entrelíneas. Intervención en San Cristóbal [Las Palmas de Gran Canaria]

[ES] El Vacío, el espacio para habitar. La realidad de un espacio está en su espacio libre y no es sus techos y muros, es ahí donde se da el movimiento, en el cual se encuentra lo INTANGIBLE, LOS FENÓMENOS PSICOLÓGICOS, LAS VIVENCIAS. Agrupación de viviendas, en el barrio marinero de San Cristóbal.

Existence and uniqueness of positive and nondecreasing solutions for a class of singular fractional boundary value problems

[EN] We establish the existence and uniqueness of a positive and nondecreasing solution to a singular boundary value problem of a class of nonlinear fractional differential equation. Our analysis relies on a fixed point theorem in partially ordered sets.

Modelado de la producción de energía eléctrica de una planta fotovoltaica basado en un sistema domótico

Máster Universitario en Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería (SIANI)

La comunicación no verbal en la mediación familiar

[ES] El trabajo que presentamos intenta aportar que la Comunicación no Verbal puede ser un instrumento a tener en cuenta en el proceso de la comunicación en su conjunto y donde se intenta medir, a través de un cuestionario (CUVALECORME), la valoración de la comunicación no verbal como herramienta de trabajo en la mediación familiar. Para la elaboración y desarrollo de este estudio, hemos conformado un marco teórico-conceptual con la aportación de diferentes autores que han tratado y analizado el lenguaje corporal. Citamos entre otros, a Parkinson (2005), Mehabian (1972), Cabana (2003), Günter (1995), Pinazu y Musitu (1993), Mucchiello (1998), Berlo (1969), Watzlawick (1974), Polaino y Martínez (1990) y Hervés (1998). Los resultados obtenidos muestran, a pesar de las limitaciones teóricas y metodológicas, una línea de trabajo que nos permiten señalar posturas a favor de la Valoración de la Comunicación no Verbal como Herramienta de Trabajo en la Mediación Familiar. De dichos resultados destacamos el obtenido en el total de niveles de valoración del CUVALECORME, donde el 78,9% de opinión consideran a la Comunicación no Verbal como una Herramienta de Trabajo en la Mediación Familiar, frente a un porcentaje del 21,1% de opiniones desfavorables.

Prácticas de laboratorio en contextos de enseñanza-aprendizaje basados en competencias: dificultades y oportunidades

[ES]Varias de las metodologías didácticas utilizadas en el nuevo modelo de enseñanza-aprendizaje basado en competencias mantienen la misma denominación que tenían en el modelo tradicional de enseñanza. Un ejemplo de estas metodologías son las Prácticas de Laboratorio. Este hecho, unido a las dificultades que conlleva la transición hacia el nuevo paradigma de aprendizaje, suele conducir al riesgo de que dichas metodologías continúen aplicándose bajo el enfoque clásico de enseñanza centrada exclusivamente en la transmisión de conocimientos y habilidades instrumentales. En este artículo se analiza estos riesgos y se propone un conjunto de pautas prácticas que facilitan la orientación de las Prácticas de Laboratorio hacia este nuevo modelo de aprendizaje.