Search results for "ètica"

A look at ethical issues in action research in education

2015

This reflective contribution covers a wide range of ethical issues which are bound to arise when teacher-researchers engage in technical, practical or critical models of action research. Once these three models are briefly explained, the paper proceeds to justify why ethical dilemmas are an intrinsic part of action research, precisely on account of its collaborative nature and of the diverse motivations, perspectives, and institutional roles held by its participants. As a result, questions around power and control are also likely to arise. Hence, we stress the need for action researchers to anticipate these ethical issues and be prepared to handle them through sincere and respectful dialogu…

Tras las Huellas de Pigmalión y Hefesto. Máscaras de la expresión amorosa en la poesía de Jaime Siles

2014

La poesía de Jaime Siles no se ha caracterizado, según la crítica especializada, por su intensidad emocional y, ni mucho menos, por el predominio de la temática amorosa. Sin embargo, han estado siempre presentes a lo largo de su obra, desempeñando un papel relevante en esa búsqueda de equilibrio emocional que sí le caracteriza. Así, resulta interesante ver cómo los sentidos se convierten en cauces por los que discurre la experiencia amorosa, la intensa, pero fugaz, fusión de los cuerpos amantes, que pugna por racionalizarse a través de la palabra.

Libri minores

Sig. a-h8 Liber Catonis. Liber de contemptu mundi. Fabulas aesopi. Liber floretus. Liber primus quinq[ue] clauium sapientiae Grav. xil. a la port. - Capitals grav Lletra gòtica a la port. i en algunes rúbriques, titulets i postil·les marginals

Heat shock response in yeast involver changes in both transcription rates and mRNA stabilities

2011

We have analyzed the heat stress response in the yeast Saccharomyces cerevisiae by determining mRNA levels and transcription rates for the whole transcriptome after a shift from 25uC to 37uC. Using an established mathematical algorithm, theoretical mRNA decay rates have also been calculated from the experimental data. We have verified the mathematical predictions for selected genes by determining their mRNA decay rates at different times during heat stress response using the regulatable tetO promoter. This study indicates that the yeast response to heat shock is not only due to changes in transcription rates, but also to changes in the mRNA stabilities. mRNA stability is affected in 62% of …

Metabolomic Pattern Analysis after Mediterranean Diet Intervention in a Nondiabetic Population: A 1- and 3-Year Follow-up in the PREDIMED Study

2014

The Mediterranean diet (MD) is considered a dietary pattern with beneficial effects on human health. The aim of this study was to assess the effect of an MD on urinary metabolome by comparing subjects at 1 and 3 years of follow-up, after an MD supplemented with either extra-virgin olive oil (MD + EVOO) or nuts (MD + Nuts), to those on advice to follow a control low-fat diet (LFD). Ninety-eight nondiabetic volunteers were evaluated, using metabolomic approaches, corresponding to MD + EVOO (n = 41), MD + Nuts (n = 27), or LFD (n = 30) groups. The (1)H NMR urinary profiles were examined at baseline and after 1 and 3 years of follow-up. Multivariate data analysis (OSC-PLS-DA and HCA) methods we…

A model species for agricultural pest genomics: the genome of the Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)

2018

AbstractThe Colorado potato beetle is one of the most challenging agricultural pests to manage. It has shown a spectacular ability to adapt to a variety of solanaceaeous plants and variable climates during its global invasion, and, notably, to rapidly evolve insecticide resistance. To examine evidence of rapid evolutionary change, and to understand the genetic basis of herbivory and insecticide resistance, we tested for structural and functional genomic changes relative to other arthropod species using genome sequencing, transcriptomics, and community annotation. Two factors that might facilitate rapid evolutionary change include transposable elements, which comprise at least 17% of the gen…

Prevalence of pathogenic copy number variants among children conceived by donor oocyte.

2021

AbstractDevelopment of assisted reproductive technologies to address infertility has favored the birth of many children in the last years. The majority of children born with these treatments are healthy, but some concerns remain on the safety of these medical procedures. We have retrospectively analyzed both the fertilization method and the microarray results in all those children born between 2010 and 2019 with multiple congenital anomalies, developmental delay and/or autistic spectrum disorder (n = 486) referred for array study in our center. This analysis showed a significant excess of pathogenic copy number variants among those patients conceived after in vitro fertilization with donor …

Genetic association analysis identifies variants associated with disease progression in primary sclerosing cholangitis

2018

ObjectivePrimary sclerosing cholangitis (PSC) is a genetically complex, inflammatory bile duct disease of largely unknown aetiology often leading to liver transplantation or death. Little is known about the genetic contribution to the severity and progression of PSC. The aim of this study is to identify genetic variants associated with PSC disease progression and development of complications.DesignWe collected standardised PSC subphenotypes in a large cohort of 3402 patients with PSC. After quality control, we combined 130 422 single nucleotide polymorphisms of all patients—obtained using the Illumina immunochip—with their disease subphenotypes. Using logistic regression and Cox proportiona…

Epigenetic outlier profiles in depression: A genome-wide DNA methylation analysis of monozygotic twins

2018

Recent discoveries highlight the importance of stochastic epigenetic changes, as indexed by epigenetic outlier DNA methylation signatures, as a valuable tool to understand aberrant cell function and subsequent human pathology. There is evidence of such changes in different complex disorders as diverse as cancer, obesity and, to a lesser extent, depression. The current study was aimed at identifying outlying DNA methylation signatures of depressive psychopathology. Here, genome-wide DNA methylation levels were measured (by means of Illumina Infinium HumanMethylation450 Beadchip) in peripheral blood of thirty-four monozygotic twins informative for depressive psychopathology (lifetime DSM-IV d…

Noninvasive Imaging Estimation of Myocardial Iron Repletion Following Administration of Intravenous Iron : The Myocardial- Trial

2020

Background Intravenous ferric carboxymaltose ( FCM ) improves symptoms, functional capacity, and quality of life in heart failure and iron deficiency. The mechanisms underlying these effects are not fully understood. The aim of this study was to examine changes in myocardial iron content after FCM administration in patients with heart failure and iron deficiency using cardiac magnetic resonance. Methods and Results Fifty‐three stable heart failure and iron deficiency patients were randomly assigned 1:1 to receive intravenous FCM or placebo in a multicenter, double‐blind study. T2* and T1 mapping cardiac magnetic resonance sequences, noninvasive surrogates of intramyocardial iron, were eval…