Stabilized convection in a ternary mixture with two Soret coefficients of opposite sign.

We performed ground-based experiments on the sample polystyrene-toluene-cyclohexane in order to complement the experimental activities in microgravity conditions related to the ESA projects DCMIX4 and Giant Fluctuations. After applying a stabilizing thermal gradient by heating from above a layer of the fluid mixture, we studied over many hours the density variations in the bidimensional horizontal field by means of a Shadowgraph optical setup. The resulting images evidence the appearance of convective instability after a diffusive time associated with the binary molecular solvent consisting of toluene and cyclohexane, confirming the negative sign of the Soret coefficient of this mixture. After a larger diffusive time related to mass diffusion of the polystyrene in the binary solvent, convection was suppressed by the increasing stabilizing density gradient originated by the Soret-induced concentration gradient of the polymer. This is compatible with a positive sign of the Soret coefficient of the polymer in the binary solvent.

Benchmarking estratégico aplicado a la gestión de riesgos asistenciales en Quirónsalud / No disponible

INTRODUCCIÓN: La metodología del benchmarking estratégico aplicado a la gestión de riesgos comenzó a utilizarse en el año 2016 en la Compañía Quirónsalud y fue el punto de partida para la implantación de los objetivos de calidad asistencial y de seguridad del paciente. OBJETIVO GENERAL: Realizar un seguimiento continuo y sistemático de las líneas estratégicas marcadas en la Estrategia de Seguridad del Paciente y evaluar su grado de cumplimiento. METODOLOGÍA: Mediante un análisis de debilidades, amenazas, fortalezas y oportunidades (DAFO), se identificaron 17 riesgos, para los que se establecieron objetivos e indicadores. Se utilizó la información disponible en el Conjunto Mínimo Básico de Datos (CMBD) y los indicadores definidos por la Agency for Healthcare Research and Quality (AHRQ), los indicadores de calidad de la hospitalización del grupo Helios (EIQI ́s) y el indicador de cirugía precoz en fractura de cadera de la Organización para la Cooperación y el Desarrollo Económico (OCDE). También se incorporaron los indicadores en el Observatorio de Resultados del Servicio Madrileño de Salud (SERMAS) y los de la Central de Resultados del Servicio Catalán de Salud (CatSalut). RESULTADOS: Entre los resultados obtenidos en 2019 cabe destacar el porcentaje de hospitales que han experimentado una mejora continuada en los indicadores. Implantación de rondas de seguridad trimestrales con participación de la dirección >90%. El % Checklists en cirugía programada >85%. El % de pacientes ingresados con registro de la 5ª constante > 79%. El % de intervenciones por fractura de cadera a las 48h tras ingreso > 78%.Los porcentajes de compromiso (abordaje del objetivo) y de cumplimiento (alcanzar la meta corporativa o superar lo pactado con la Dirección Corporativa) de los indicadores, han experimentado un crecimiento progresivo en los últimos años situándose en 2019 en un 94% y en un 85% respectivamente. CONCLUSIONES: El benchmarking estratégico mejora la eficacia en la gestión de riesgos asistenciales porque permite realizar análisis comparados, identificar y compartir buenas prácticas e introduce el elemento de competencia entre los hospitales promoviendo el compromiso con la estrategia

INTRODUCTION: The strategic benchmarking methodology applied to risk management began to be applied at Quirónsalud Company in 2016. This was the starting point for the implementation of the Company's healthcare quality objectives, including the patient safety objectives. GENERAL OBJECTIVE: To assess the degree to which Quirónsalud facilities comply with the strategy lines set forth in the group-wide patient-safety strategy program. METHODS: Through an analysis of strengths, weaknesses, opportunities and threats (SWOT), 17 threats were identified. This were used to set company-wide targets and indicators. The set of quality indicators were obtained from the information available in the minimum basic data set (MBDS), the indicators defined by the Agency for Healthcare Research and Quality (AHRQ), the hospital-quality indicators of the Helios group (EIQI ́s) and the early hip fracture surgery indicator of the Organization for Economic Co-operation and Development (OECD). In addition, some of the indicators included in the Observatorio de Resultados del Servicio Madrileño de Salud (SERMAS) and the Central de Resultados de Servicio Catalán de Salud (CatSalut) were also incorporated. RESULTS: Among the results obtained in year 2019, the percentage of hospitals that have experienced continuous improvement in the indicators should be highlighted. Implementation of quarterly executive walkarounds > 90%. The % of checklists used in elective surgery > 85%. The % of inpatients evaluated for the 'Fifth Vital Sign' > 79%. The % of hip-fracture surgeries performed within 48h of admission > 78%.There has been a progressive increase over recent years in the degree of commitment to (target approach) and fulfillment (achieve the corporate goal or exceed what was agreed with the Corporate Management) of indicators (94% and 85%, respectively).CONCLUSIONS: Strategic benchmarking improves effective management of care-related risks by allowing comparative analysis, enabling organizations to identify and share best practices, and by introducing an element of competition between hospitals, thereby driving commitment to organization-wide strategy

Propagating modes in a binary liquid mixture under thermal stress.

Nonequilibrium temperature and concentration fluctuations inside a binary liquid mixture under the action of a temperature gradient relax back to equilibrium either due to conduction and diffusion at large wave numbers, or due to the quenching determined by gravity at small wave numbers. We investigate the dynamics of nonequilibrium fluctuations in a binary liquid mixture of polystyrene and toluene heated from above under stationary conditions in a thermodiffusion experiment. We show that the strong gravitational stabilization at small wave numbers determines the appearance of propagating modes of nonequilibrium fluctuations as detected through the structure function of shadowgraph images. The propagating modes are the combined effect of temperature and velocity nonequilibrium fluctuations induced by the buoyancy force. The experimental results are in good agreement with a fluctuating hydrodynamics theroretical model including the coupling of fluctuations of velocity, temperature and concentration.