Search results for "PC"
showing 10 items of 2805 documents
Metabolic and cardiopulmonary effects of detraining after a structured exercise training programme in young PCOS women
2008
Summary Objective The aim of the present study was to determine if the favourable cardiopulmonary and metabolic benefits induced by exercise training (ET) programme are maintained after its cessation. Patients Thirty-two young overweight polycystic ovary syndrome (PCOS) women matched for age and body mass index (BMI) with other 32 PCOS patients was enrolled. The first group [PCOS-T (trained)] underwent 24-week ET programme, whereas the second [PCOS-DT (detrained)] underwent 12-week ET programme followed by 12-week detraining period. Methods At baseline, after 12- and 24-week follow-up, all PCOS women were studied for their hormonal (ovarian and adrenal androgens), metabolic (glucose and …
Iperreattività bronchiale aspecifica in pazienti monosensibili con rinite allergica: variazioni stagionali in rapporto alle IgE sieriche totali ed ag…
2005
Introduction: The significance of the association between allergic rhinitis and abnormal airway responsiveness is unclear. For this reason, we have studied, in patients with seasonal allergic rhinitis, non specific bronchial hyperreactivity, total serum IgE and blood eosinophils, with reference to the responsible allergen, during and out of the pollen season. Materials and methods: Fourty-nine, non-smoking patients, living in Palermo, with clinical diagnosis of allergic rhinitis, skin prick tests and specific serum IgE mono-sensitive to pollen allergens, were enrolled in the study. Twenty patients suffered from seasonal rhinitis to Parietaria pollen, 15 patients to Graminacee pollen and 14 …
Antecedentes de las consultas de boca-oído online sobre hoteles
2017
Las consultas online sobre productos y servicios antes de la compra han recibido menor atención en la literatura que la generación de comentarios después de la experiencia. Nuestro trabajo aborda, por tanto, el estudio de la conducta de boca-oído online desde la perspectiva del receptor. El objetivo es investigar las variables que contribuyen en la adopción de boca-oído online para tomar la decisión de elección de un hotel. Para ello, se analiza la cadena de relaciones “motivaciones→intención de consultar→volumen→adopción”, considerando tres tipos de motivaciones: conveniencia, riesgo y sociales. Con una muestra de 393 huéspedes de hoteles de 3, 4 y 5 estrellas y a partir de un modelo de ec…
El Sáhara y la MPC
2007
¿Viva la corrupción?
2005
DHEA-Bodipy–a functional fluorescent DHEA analog for live cell imaging
2009
International audience; The androgen dehydroepiandrosterone (DHEA) has been reported to protect neuronal cells against dysfunction and apoptosis. Several signaling pathways involved in these effects have been described but little is known about the intracellular trafficking of DHEA. We describe design, synthesis and characterization of DHEA-Bodipy, a novel fluorescent DHEA analog. DHEA-Bodipy proved to be a functional DHEA derivative: DHEA-Bodipy (i) induced estrogen receptor α-mediated gene activation, (ii) protected PC12 rat pheochromocytoma cells against serum deprivation-induced apoptosis, and (iii) induced stress fibers and focal adhesion contacts in SH-SY5Y human neuroblastoma cells. …
Improving clustering of Web bot and human sessions by applying Principal Component Analysis
2019
View references (18) The paper addresses the problem of modeling Web sessions of bots and legitimate users (humans) as feature vectors for their use at the input of classification models. So far many different features to discriminate bots’ and humans’ navigational patterns have been considered in session models but very few studies were devoted to feature selection and dimensionality reduction in the context of bot detection. We propose applying Principal Component Analysis (PCA) to develop improved session models based on predictor variables being efficient discriminants of Web bots. The proposed models are used in session clustering, whose performance is evaluated in terms of the purity …
Microwave and optical data fusion for global mapping of soil moisture at high resolution
2018
After more than 8 years in orbit the Soil Moisture and Ocean Salinity (SMOS) satellite is still in good health and several algorithms for improving its spatial resolution have been proposed and validated in a variety of catchments. However, none of them has yet been applied at the global scale. In this article we present: i) a review of the latest SMOS-BEC downscaling algorithm, which allows for its global application using an adaptive moving window and ii) a thorough validation of the resulting maps over two in-situ networks: REMEDHUS in Spain and OzNet in Australia. The proposed algorithm combines SMOS brightness temperatures (at ~40 km spatial resolution), and MODIS-derived Land Surface …
Towards controlling PCDD/F production in a multi-fuel fired BFB boiler using two sulfur addition strategies. Part II: Thermodynamic analysis
2014
Abstract A staged equilibrium process model was developed for a bubbling fluidized bed boiler firing SRF, bark and sludge. The model was used to study the influence of sulfur addition strategies (S-pellet additive and peat co-firing) on the behavior of copper, bromine, and alkalis. Aerosol samples collected from the backpass of the boiler were used to validate the chemistry predicted by the model. The model revealed that Cu existed as Cu 2 S (s3) in the reducing zone, and CuCl (g) (for all test cases) and CuO (s) (during peat co-firing) in the oxidation zones. CuBr 3(g) was also present after the introduction of tertiary air. However the model failed to predict the formation of CuSO 4 , an …
L'evolució històrica de la psicologia del treball i de les organitzacions
2010
El món organitzacional ha esdevingut l'eix vertebrador de la Psicologia del treball, des del sistema gremial al sistema fabril, que reunia les característiques de veritables organitzacions industrials. Les notes que caracteritzen el procés són: la mentalitat racional, la mecanització de la fabricació i la utilització del vapor com nova energia aplicable a la indústria. A més, la mecanització tindria efectes sobre l'organització del treball, en l'extremar la diferenciació de funcions i la divisió de tasques. Taylor, des de l'enginyeria, introduí una organització científica del treball per millorar els sistemes i els llocs laborals. Amb el mateix objectiu, orientat a millorar l'administració …