Search results for "acció"
showing 10 items of 621 documents
Aula abierta
2017
RESUMENA pesar de la enorme inversión en recursos de todo tipo para lograr la alfabetización universal, los bajos niveles lectores alcanzados al finalizar la educación secundaría, así como los pobres hábitos de lectura en adultos, constituyen un problema y un reto de mejora en todas las sociedades desarrolladas. Este trabajo aborda esta cuestión y enfatiza la necesidad de evidenciar a los niños y niñas pequeños qué hay en los libros y qué representan, mucho antes de que aprendan a leer. Se presenta una breve revisión de investigaciones sobre los efectos y beneficios de la lectura en voz alta entre padres o educadores infantiles y niños, desde edad muy temprana, como estrategia compartida pa…
La mesura de l'ús de les llengües en els mitjans telemàtics
2020
La consolidació de l'entorn digital i totes les seues modalitats de comunicació ha ampliat les possibilitats d'interacció i, per tant, els àmbits d'ús de les llengües. Com a adaptació a aquesta nova realitat, en aquesta aproximació metodològica plantegem la combinació de diferents tècniques no reactives: explotació de fonts secundàries, observació sistemàtica, i mystery shopping. Les fonts d'observació directa ens permeten mesurar de manera efectiva l'ús de les llengües en la comunicació telemàtica. Els autors ho han aplicat específicament en l'administració local i en empreses de serveis. En l'àmbit administratiu, a més, això ens ha servit per a desenvolupar un índex global de presència de…
Bupivacaine 0.5% versus articaine 4% for the removal of lower third molars. A crossover randomized controlled trial.
2012
Objective: To compare the anesthetic action of 0.5% bupivacaine in relation to 4% articaine, both with 1:200,000 epinephrine, in the surgical removal of lower third molars. As a secondary objective hemodynamic changes using both anesthetics were analyzed. Study Design: Triple-blind crossover randomized clinical trial. Eighteen patients underwent bilateral removal of impacted lower third molars using 0.5% bupivacaine or 4% articaine in two different appointments. Preoperative, intraoperative and postoperative variables were recorded. Differences were assessed with McNemar tests and repeated measures ANOVA tests. Results: Both solutions exhibited similar latency times and intraoperative effic…
Breathing-Dependent Redox Activity in a Tetrathiafulvalene-Based Metal–Organic Framework
2018
"Breathing" metal-organic frameworks (MOFs) that involve changes in their structural and physical properties upon an external stimulus are an interesting class of crystalline materials due to their range of potential applications including chemical sensors. The addition of redox activity opens up a new pathway for multifunctional "breathing" frameworks. Herein, we report the continuous breathing behavior of a tetrathiafulvalene (TTF)-based MOF, namely MUV-2, showing a reversible swelling (up to ca. 40% of the volume cell) upon solvent adsorption. Importantly, the planarity of the TTF linkers is influenced by the breathing behavior of the MOF, directly impacting on its electrochemical proper…
Efficacy of different methods used for dry socket prevention and risk factor analysis: A systematic review
2017
Background Dry socket is one of the most common complications that develops after the extraction of a permanent tooth, and its prevention is more effective than its treatment. Objectives Analyze the efficacy of different methods used in preventing dry socket in order to decrease its incidence after tooth extraction. Material and Methods A Cochrane and PubMed-MEDLINE database search was conducted with the search terms “dry socket”, “prevention”, “risk factors”, “alveolar osteitis” and “fibrynolitic alveolitis”, both individually and using the Boolean operator “AND”. The inclusion criteria were: clinical studies including at least 30 patients, articles published from 2005 to 2015 and written …
La influencia de la calidad del servicio logístico, la intensidad y el valor de compra omnicanal sobre la satisfacción y lealtad del consumidor
2018
El consumidor omnicanal ya no ve al canal de compra online como una parte separada de la organización y demanda la compra y el envío del pedido desde cualquier parte. La omnicanalidad tiene su enfoque en una aproximación integral y verdadera a lo largo de toda la operación de distribución, proporcionando una respuesta continua y sin interrupciones a la experiencia del consumidor a través de todos los canales de compra disponibles (Wilding, 2013; Saghiri, 2017). Desde que la irrupción tecnológica permitió el acceso masivo de las organizaciones a los consumidores a través de múltiples canales de compra, la calidad del servicio logístico se ha formulado como un aspecto clave en la evolución de…
Haem Biosynthesis and Antioxidant Enzymes in Circulating Cells of Acute Intermittent Porphyria Patients
2016
The aims of the present study were to explore the expression pattern of haem biosynthesis enzymes in circulating cells of patients affected by two types of porphyria (acute intermittent, AIP, and variegate porphyria, VP), together with the antioxidant enzyme pattern in AIP in order to identify a possible situation of oxidative stress. Sixteen and twelve patients affected by AIP and VP, respectively, were analysed with the same numbers of healthy matched controls. Erythrocytes, neutrophils and peripheral blood mononuclear cells (PBMCs) were purified from blood, and RNA and proteins were extracted for quantitative real time PCR (qRT-PCR) and Western-blot analysis, respectively. Porhobilinogen…
CLOCK gene variation is associated with incidence of type‑2 diabetes and cardiovascular diseases in type‑2 diabetic subjects: dietary modulation in t…
2016
Background: Circadian rhythms regulate key biological processes influencing metabolic pathways. Disregulation is associated with type 2 diabetes (T2D) and cardiovascular diseases (CVD). Circadian rhythms are generated by a transcriptional autoregulatory feedback loop involving core clock genes. CLOCK (circadian locomotor output cycles protein kaput), one of those core genes, is known to regulate glucose metabolism in rodent models. Cross-sectional studies in humans have reported associations between this locus and obesity, plasma glucose, hypertension and T2D prevalence, supporting its role in cardiovascular risk. However, no longitudinal study has investigated the association between CLOCK…
Students' satisfaction and perceived impact on knowledge, attitudes and skills after a 2-day course in scientific writing: a prospective longitudinal…
2018
OBJECTIVES: This study aimed to determine students' satisfaction with a 2-day course on scientific writing in health sciences and to assess their perceptions of the long-term impact on their knowledge, attitudes and skills. SETTING: 27 iterations of a 2-day course on writing and publishing scientific articles in health sciences. PARTICIPANTS: 741 students attending the 27 courses. DESIGN: Prospective longitudinal study. PRIMARY AND SECONDARY OUTCOME MEASURES: Immediately after each course, students completed a first questionnaire, rating their satisfaction with different aspects of the classroom sessions on a Likert scale (0-5). Approximately 2 years after the course, students completed a f…
Effect of the local administration of betamethasone on pain, swelling and trismus after impacted lower third molar extraction. A randomized, triple b…
2013
Objectives: The aim of this study is to compare the analgesic and anti-inflammatory effects of the local postoperative administration of a single 12-mg dose of betamethasone after the surgical removal of impacted lower third molars. Study Design: A split-mouth, triple-blind, randomized, placebo-controlled clinical trial of 25 patients requiring the surgical removal of symmetrical lower third molars was performed. In the experimental side, a 12-mg dose of betamethasone was administered submucosally after the surgical procedure, while in the control side a placebo (sterile saline solution) was injected in the same area. To assess postoperative pain, visual analogue scales and the consumption …