Search results for " norma"
showing 10 items of 623 documents
Relació entre responsabilitat social universitària i compromís organitzacional de funcionaris xilens
2015
Mitjançant aquest estudi es va buscar esbrinar els components de compromís organitzacional predominant en funcionaris d'una institució d'educació universitària xilena i la percepció que aquests mateixos treballadors tenen sobre l'exercici de la responsabilitat social de l'organització, per establir finalment una relació entre ambdues. Van ser enquestats 312 funcionaris universitaris, acadèmics, professionals no acadèmics i administratius, que van constituir una mostra vàlida de 296 funcionaris de diferents facultades, dependències i/o organismes d'una mateixa Universitat. Els resultats indiquen que els tals funcionaris han desenvolupat en major mesura un compromís basat en l'afecte amb l'or…
El fenómeno del botellón desde una óptica jurídica
2006
Se hace referencia a la legislación autonómica relativa al fenómeno del botellón , en la que se prohíbe el consumo de alcohol en la vía pública, y se cita alguna de la jurisprudencia derivada de dicha problemática. También se analiza uno de los aspectos más controvertidos en los temas relacionados con el consumo de alcohol en la vía pública: el relativo a la potestad normativa de las entidades locales, que parece pueden dictar normativa al respecto, pero en sentido restrictivo, respetando la normativa emanada de la legislación autonómica.
Creencias normativas en estrategias preventivas: una espada de doble filo. Efectos de la percepción de normas y normalidad en campañas informativas, …
2009
Las normas descriptivas representan aquellas creencias que relacionan cuántos amigos o compañeros usan drogas y perciben el uso de drogas como algo normal o aceptable. Las intervenciones y estrategias preventivas pueden directa o indirectamente influir sobre las creencias normativas, i.e. la percepción de normas descriptivas. Estas creencias a su vez son unos importantes predictores del consumo de drogas legales e ilegales. El artículo discute la importancia de influir positivamente sobre las normas sociales y su percepción a través de las políticas reguladoras del alcohol y tabaco. Por otra parte se abordan también los problemas éticos que las campañas informativas sobre drogas ilegales pu…
Present status and first results of the final focus beam line at the KEK Accelerator Test Facility
2011
ATF2 is a final-focus test beam line which aims to focus the low emittance beam from the ATF damping ring to a vertical size of about 37 nm and to demonstrate nanometer level beam stability. Several advanced beam diagnostics and feedback tools are used. In December 2008, construction and installation were completed and beam commissioning started, supported by an international team of Asian, European, and U.S. scientists. The present status and first results are described.
Caracterización mineralógica de materias primas cerámicas por métodos cuantitativos de difracción de rayos x
2002
[ES] El objetivo de este trabajo es la caracterización de fases minerales presentes en materias primas utilizadas en la industria cerámica. Para ello se utilizan dos métodos cuantitativos basados en la difracción de rayos X, el método de Rietveld y un método sin estándar. Los resultados obtenidos por difracción rayos X de estos materiales policristalinos se comparan con los correspondientes análisis químicos y la composición normativa calculada. La precisión y reproducibilidad de los resultados obtenidos, en concordancia con los del análisis químico, son una de las más importantes ventajas de la difractometría cuantitativa que facilitan su utilización en la industria cerámica en el control …
Long-term follow-up of hepatitis C virus-positive patients with persistently normal serum transaminases
2013
Material and methods. This study prospectively evaluated the progression of liver disease in a group of anti-HCV-positive patients with persistently normal ALT levels (PNALT) who were HCV-RNA positive. Patients selected for this study were those who presented with PNALT according to the Italian Association for the Study of the Liver (AISF) criteria in the year 1995/96 and underwent liver biopsy. They were divided into two groups according to their ALT evolution. Forty-five patients were included in this study. Results. After a median follow-up time of 180 months twenty-five of them maintained PNALT, but two of these developed liver cirrhosis (LC) in a mean time of 174 and 202 months, respec…
Spatial resolution of fMRI in the human parasylvian cortex: Comparison of somatosensory and auditory activation
2005
Abstract In spite of its outstanding spatial resolution, the biological resolution of functional MRI may be worse because it depends on the vascular architecture of the brain. Here, we compared the activation patterns of the secondary somatosensory and parietal ventral cortex (SII/PV) with that of the primary auditory cortex and adjacent areas (AI/AII). These two brain regions are located immediately adjacent to each other on opposite banks of the Sylvian fissure, and are anatomically and functionally distinct. In 12 healthy subjects, SII/PV was activated by pneumatic tactile stimuli applied to the index finger (0.5 cm 2 contact area, 4 bar pressure), and AI/AII by amplitude-modulated tones…
Occult hepatitis B virus in liver tissue of individuals without hepatic disease
2008
Abstract BACKGROUND/AIMS: While many data are available concerning occult hepatitis B virus (HBV) infection in patients with hepatic disorders, there is little information about this cryptic infection in individuals without liver disease. The aim of this study was to investigate the prevalence of occult HBV in the general population by examining liver specimens from a large series of HBV-surface-antigen negative individuals with no clinical and biochemical evidence of liver disease. METHODS: The presence of HBV DNA was evaluated by testing, through polymerase chain reaction techniques, DNA extracts from 98 liver-disease-free individuals who underwent liver resection or needle biopsy during …
Spatial variability of muscle activity during human walking: The effects of different EMG normalization approaches
2015
Human leg muscles are often activated inhomogeneously, e.g. in standing. This may also occur in complex tasks like walking. Thus, bipolar surface electromyography (sEMG) may not accurately represent whole muscle activity. This study used 64-electrode high-density sEMG (HD-sEMG) to examine spatial variability of lateral gastrocnemius (LG) muscle activity during the stance phase of walking, maximal voluntary contractions (MVCs) and maximal M-waves, and determined the effects of different normalization approaches on spatial and inter-participant variability. Plantar flexion MVC, maximal electrically elicited M-waves and walking at self-selected speed were recorded in eight healthy males aged 2…
Incidence of thromboembolic complications in patients with mechanical heart valves with a subtherapeutic international normalized ratio.
2008
Objective Subtherapeutic international normalized ratios are frequently encountered in clinical practice, and patients with mechanical heart valves with inadequate anticoagulation may be exposed to an increased risk of thromboembolic events. There are no data on thromboembolic event risk for these patients. Methods We assessed the current practice patterns in the management of patients with mechanical heart valves with subtherapeutic international normalized ratios and assessed the risk of thromboembolic complications in this setting. The charts of patients with mechanical heart valves followed up in two anticoagulation clinics were reviewed. Patients with a history of stable, therapeutic a…