Search results for "OCDE"

Scientific production in clinical medicine and international collaboration networks in South American countries

2012

Background: International collaboration is increasingly used in biomedical research. Aim: To describe the characteristics of scientific production in Latin America and the main international collaboration networks for the period 2000 to 2009. Material and Methods: Search for papers generated in Latin American countries in the Clinical Medicine database of ISI Web of Knowledge v.4.10 - Current Contents Connect. The country of origin of the corresponding author was considered the producing country of the paper. International collaboration was analyzed calculating the number of countries that contributed to the generation of a particular paper. Collaboration networks were graphed to determine …

Parental-caregiver perceptions of child oral health-related quality of life (P-CPQ): Psychometric properties for the peruvian spanish language.

2013

Objectives: The aim of the study was to cross-culturally adapt the Parental-Caregiver Perceptions Questionnaire (P-CPQ) to the Peruvian Spanish language and assess its reliability and validity. Study Design: To translate and cross-cultural adapt the instrument, 60 parents answered the P-CPQ in two pilot tests. The final version of the P-CPQ was evaluated in 200 parents of children aged 11 to 14 years, who were clini - cally examined for dental caries. The internal consistency was assessed by Cronbach's alpha coefficient while repeat administration of the P-CPQ on the same 200 children facilitated the test-retest reliability via intraclass correlation coefficient (ICC). Construct and discrim…

Electrochemical characterization of mangrove sediments: A proposal of new proxies for organic matter oxidation

2019

Abstract The voltammetric response of microparticulate deposits resulting from solvent evaporation of ethanolic extracts of mangrove sediments in contact with aqueous acetate buffer is hereby described. Dated sediment cores sampled from the Peruvian mangrove system (“Manglares de Tumbes” National Sanctuary) presented voltammetric responses dominated by oxidative signals of organic components that exhibit significant variations depending on the depth. Voltammetric data allowed for the definition of electrochemical indexes representative of the electrochemically oxidable organic matter fraction. These electrochemical indexes were fEAOM (for the total amount of organic matter being electrochem…

EL G-20, ¿una luz sin sombras?

2009

New insights into the regulatory mechanisms of ppGpp and DksA on Escherichia coli RNA polymerase-promoter complex

2015

The stringent response modulators, guanosine tetraphosphate (ppGpp) and protein DksA, bind RNA polymerase (RNAP) and regulate gene expression to adapt bacteria to different environmental conditions. Here, we use Atomic Force Microscopy and in vitro transcription assays to study the effects of these modulators on the conformation and stability of the open promoter complex (RPo) formed at the rrnA P1, rrnB P1, its discriminator (dis) variant and lambda pR promoters. In the absence of modulators, RPo formed at these promoters show different extents of DNA wrapping which correlate with the position of UP elements. Addition of the modulators affects both DNA wrapping and RPo stability in a promo…

Inclusión educativa comparada en UNESCO y OCDE desde la cartografía social.

2020

La inclusión como principio tanto pedagógico como parte de la política socioeducativa se ha asentado a nivel transnacional. La aportación del presente artículo consiste en demostrar cómo, a pesar de los discursos que hablan de homogeneización y de isomorfismos en los principios sociopolíticos de la educación debido a las directrices pergeñadas desde los organismos internacionales, se detectan divergencias que fidelizan a cada uno de ellos con modelos teóricos irreconciliables. Para demostrarlo, se utiliza el análisis de contenido y el estudio de caso a partir de los informes publicados entre 1994 y 2019, a fin de escrutar el discurso que sobre la inclusión educativa han mantenido dos organi…

Evidence for Transmission of Taenia solium Taeniasis/Cysticercosis in a Rural Area of Northern Rwanda

2021

Cysticercosis is a parasitic infection caused by the metacestode larval stage (cysticercus) of Taenia solium. In humans, cysticercosis may infect the central nervous system and cause neurocysticercosis, which is responsible for over 50,000 deaths per year worldwide and is the major cause of preventable epilepsy cases, especially in low-income countries. Cysticercosis infection is endemic in many less developed countries where poor hygiene conditions and free-range pig management favor their transmission. A cross-sectional study was conducted in 680 children from a rural primary school in Gakenke district (Northern province of Rwanda). Stool samples were collected from participants and analy…

A century of trends in adult human height

2016

Article

Propiedades psicométricas del CEVEAPEU: Validación en población peruana

2016

Researchers’ interest in the learning process at university context, and in its evaluation, has increased in recent years. Great deals of papers have studied this process and the role that learning strategies play in it and how to measure them in an objective and reliable way. Following this trend, the aim of this study is to validate the Cuestionario de Evaluación de las Estrategias de Aprendizaje de los Estudiantes Universitarios (CEVEAPEU) in a sample of 238 Peruvian university students. Results examined factorial validity, reliability and validity evidence of the questionnaire. In order to test factorial validity of the affective, support and control strategies and information process s…

Comparative analysis of corporate tax burden in the euro area during 2000-2013

2016

Traditionally, some countries have been using the Corporate Income Tax as a way of, starting from relatively high nominal tax rates, encourage certain economic activities through incentives or bonuses that allow considerably reduce actual business taxation. In contrast, other member states have chosen to directly lower the tax rate, regardless of other incentives, thus bringing the nominal taxation to effective.This research aims to analyze the discrepancies in the taxation of corporate income tax between different Eurozone countries for the period 2000-2013, noting the differences between the statutory (STR) and effective tax rates (ETR) of listed companies. In this way, this work locates …