10 research outputs found

    300 W SOFC-Generator with Endothermic Reforming of Propane and Other Innovative Concepts

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    Within the network of the Lower Saxony SOFC Research Cluster, a highly efficient SOFC power generator has been built. Its purpose is to supply 12 V (DC) devices and charge lead-batteries for off-grid applications, such as mobile homes or radio masts. The system is based on the Mk200 stack of Sunfire GmbH, Dresden and includes multiple innovative approaches for improved efficiency and stability.</jats:p

    Cost variation in child and adolescent psychiatric inpatient treatment

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    Publicly available costs data for child and adolescent psychiatric inpatient services do not allow links to be made with patients' needs and outcomes. Without this information commissioners may reduce the role of inpatient services on the basis of budgetary impacts alone. This study estimates the support costs before, during and after an inpatient admission and explores the associations between costs, needs and outcomes. A detailed prospective cohort study of eight child and adolescent units was undertaken in which participants were assessed at referral, admission, decision to discharge and 1 year later. Mean admission costs were pound24,120, although the range was wide. Associations were found between costs and patients' global impairment, age and exclusion status. Support costs after admission were similar to pre-admission costs, but there was some evidence to suggest that services were better targeted. Moves in England to develop national tariffs for inpatient psychiatric episodes should be based on the likely cost of the episode of treatment rather than costs per day, and good commissioning requires more information on the predictors of such costs

    Are nonisothermal kinetics fearing historical Newton's cooling law, or are just afraid of inbuilt complications due to undesirable thermal inertia?

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    Relations between the magnitude of the change of the ratios of crystallization and melting temperature with glass transition temperature, that is Tc/Tg and Tm/Tg, determine the order of the values of relative change of glass stability (GS) parameters dKH/KH, dKW/KW and dKLL/KLL. The linear correlation of new GS parameters FK and FKA which include fragility and reduced glass transition temperature with logRc is a better correlation of KLL. The stretching exponent increases as a linear function of T/Tg in the interval 1≤T/Tg<1•1 for given values of the dynamic fragility parameter m. As result, it follows that the kinetic term in fragility can be neglected. The thermodynamic term, which has a dominant role in fragility can be determined by the expressions for configurational entropy and configurational heat capacity. We compared Sc(T) a function of temperature dependence of configurational entropy which was obtained by Sipp et al and ScVFT (T) a function proposed by Yue. Both Sc(T) and ScVFT (T) have the same temperature dependence and almost overlap. Therefore, using either Sc(T) or ScVFT (T) we will get the same value of fragility index. From the dependence of lnSc(T) versus lnT it is possible to successfully predict the relations between the values of m for different glass formers
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