Search results for "25"
showing 10 items of 3263 documents
On the measurement of bubble size distribution in gas–liquid contactors via light sheet and image analysis
2010
Abstract Particle image velocimetry techniques coupled with advanced image processing tools are receiving an increasing interest for measuring flow quantities and local bubble-size distributions in gas–liquid mechanically agitated vessels. When trying to analyze image information the problem arises that bubble sizes are generally underestimated, due to the fact that the laser sheet used for lighting the system randomly cuts bubbles over non-diametrical planes, leading to an apparent bubble size distribution even in the ideal case of single sized bubbles. Clearly in the case of bubbles with a size distribution the experimental information obtained is affected by the superposition of effects.…
Experimental and fluid dynamic study of continuous supercritical water gasification of glucose
2016
Abstract The supercritical water gasification (SCWG) of glucose as a model compound for H 2 production is studied in term of process development at 25 MPa and 650 °C. Gasification has been investigated using a laboratory scale continuous plant comprising a continuous down flow reactor with a volume of 200 cm 3 , a heat recovery section and pre-heat of the biomass to simulate more closely an industrial design. Feed streams (pure water and glucose solution) are introduced at the top of the vessel and products are extracted from the bottom. The reactor is equipped with various inlet points that allow to modify the inlet position of reacting streams in order to study the effect of stream mixing…
Interstitial deletion of the long arm of chromosome 1 (1q 25-32): Clinical and endocrine features with a long term follow-up
2003
Deletion of long arm of chromosome 1 (1q-) is a rare condition with malformations of many organs (central nervous system, heart, kidney, etc.). Authors describe a young girl characterised by 1q 25-32 deletion, with severe intra- and extrauterine growth retardation, facial dismorphisms, multiple organ malformations. The patient is followed for a long-term clinical and endocrine evaluation, with evidence of hypoplastic hypophysis and multiple endocrine deficiency.
Positivity, complex FIOs, and Toeplitz operators
2018
International audience; We establish a characterization of complex linear canonical transformations that are positive with respect to a pair of strictly plurisubharmonic quadratic weights. As an application, we show that the boundedness of a class of Toeplitz operators on the Bargmann space is implied by the boundedness of their Weyl symbols.
Validation of the Italian version of the Devaluation consumers' Scale and the Devaluation Consumers Families Scale
2016
Objectives This study aimed to assess the psychometric properties of the Italian versions of the Devaluation of Consumers Scale (DCS) and the Devaluation of Consumer Families Scale (DCFS), twoshort-scales examining public stigma towards people with mental disorders and their relatives. Methods The scales were administered to 117 individuals with a clinical diagnosis of affective or non-affective psychoses (ICD 10 criteria F20-29, F30-33). Translation procedures were carried out according to accepted standards. Internal reliability was assessed using Cronbach’s alpha coefficient. Convergent validity was evaluated in terms of correlation with the Global Functioning Scale (GAF) and with the Qu…
Distrés emocional y problemas asociados en población oncológica adulta
2017
Objetivo: en este estudio se estima la prevalencia de distrés, se identifican los problemas asociados y se analiza el conocimiento y uso que hacen los pacientes sobre los recursos psicosociales disponibles en el centro hospitalario. Método: se lleva a cabo un estudio transversal en el que participan 203 pacientes oncológicos que están recibiendo tratamiento quimioterápico. En la evaluación se emplean el Inventario de Síntomas Breve-18 (BSI-18), el Listado de Problemas de NCCN y una encuesta sobre el conocimiento y uso de los recursos asistenciales del centro hospitalario. Resultados: la prevalencia de distrés en la muestra total es del 26%. Los problemas físicos son la principal fuente de d…
Evaluación de las alteraciones psicológicas y de la calidad de vida en pacientes con cáncer colorrectal localizado
2016
En los paises desarrollados y en la mayoria del mundo industrializado, el cancer constituye uno de los mayores problemas de salud siendo una de las enfermedades mas prevalentes. En la actualidad, la estimacion en Espana sobre incidencia resalta que el cancer mas frecuente teniendo en cuenta ambos sexos, con una prevision a 5 anos, es el cancer colorrectal. El principal factor pronostico es el estadio clinico en el momento de la cirugia, pero en los ultimos anos se han desarrollado diversos programas de tratamiento adyuvante con quimioterapia y radioterapia para el cancer colorrectal. Un 70% de estos tumores son de localizacion proximal (colon), mientras que el resto son distales (recto). Es…
Cribado de distrés emocional en población oncológica adulta: validación de instrumentos
2017
La investigacion ha demostrado la presencia de niveles de distres (o malestar emocional) clinicamente significativos en aproximadamente tres de cada diez pacientes oncologicos (Mitchell et al., 2011). Sin embargo, en la actualidad, menos de la mitad de estos pacientes son identificados y derivados a los servicios de asistencia psicosocial (NCCN, 2015). El fracaso a la hora de detectar y tratar adecuadamente sus necesidades emocionales conlleva una serie de importantes consecuencias negativas que repercuten no solo en la calidad de vida de los pacientes (Shim et al., 2006) y en su nivel de satisfaccion con la atencion medica recibida (Von Essen, Larsson, Oberg y Sjoden, 2002), sino tambien e…
Risk factors associated with adverse events in neonates with peripherally inserted central catheter
2019
Abstract Background Peripherally inserted central catheters have become a priority in infants who require long-term intravenous therapy, but their use involves certain risks. Objective The aim of the study was to describe the occurrence of adverse events in newborns with peripherally inserted central catheters and to determine the risk factors associated with them. Methods A descriptive cross-sectional study was designed and performed. All neonates with peripherally inserted central catheters from October 1st, 2014 to September 30th, 2015 were included. The adverse events and sociodemographic and clinical variables related to neonates and analysed catheters were recorded. Results A total of…
Salinity gradient engines
2016
Abstract This chapter is devoted to the description of a new class of heat engines based on salinity gradient technology and able to convert low-grade heat into power. The salinity gradient power (SGP) process is employed within a closed loop composed of two different sections: (i) the SGP unit devoted to the energy production, and (ii) a regeneration unit fed by the solutions exiting from the SGP unit and able to restore the initial concentration, thus regenerating the salinity gradient. The main features, limits and perspectives of this novel heat engine are described along with an overview of the state of the art presented in the literature and an example of exergetic analysis of the cyc…