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Plants can tolerate some degree of dehydration but below a threshold of water content most plants die. However, some species display specific physiological, biochemical, and molecular responses that allow survival to desiccation. Some of these responses are activated at critical stages during water loss and could represent the difference between desiccation tolerance (DT) and death. Here, we report the development of a simple and reproducible system to determine DT in Selaginella species. This system is based on the use of excised tissue (explants), exposed to a dehydration agent inside small containers, rather than whole plants making it faster, better controlled, and potential use under field conditions. We also report that the triphenyltetrazolium chloride test is a simple and accurate assay to determine tissue viability. The explant system is particularly useful to identify critical points during the dehydration process and was applied to identify novel desiccation-tolerant Selaginella species. Our data suggest that desiccation-sensitive Selaginella species have a change in viability when dehydrated to 40% RWC, indicating the onset of a critical condition at this water content. Comparative studies at these critical stages could provide a better understanding of DT mechanisms and unravel insights into the key responses to survive desiccation.HighlightIn this article, we developed a simple and efficient system to determine desiccation tolerance and critical stages during the dehydration process in Selaginella that can be applied to other plant species.

En este artículo se ha hecho una revisión sobre el desarrollo de las escalas más utilizadas en los pacientes con traumatismo grave desde hace 40 años. Es sabido que, las escalas anatómicas son eficaces, tanto para medir la gravedad de las lesiones, como para predecir resultados. Las escalas fisiológicas miden el componente dinámico tras el trauma, con gran influencia en el pronóstico de los traumatizados. Los índices metabólicos, tanto lactato como el déficit de bases, son reflejo de un estado de hipoperfusión tisular, y por tanto de shock. Las escalas combinadas sirven para la predicción y comparación evaluativa de los resultados. La incorporación de factores que influyen en el pronóstico de los traumatizados ha conllevado al desarrollo de nuevas escalas. Sin embargo, hay carencia de estudios de validación externa para su uso generalizado. Hasta que estos estudios se lleven a cabo, estas escalas deben usarse con precaución In this article we review the development of the mostused scales for severe trauma patients over the past 40 years. It is well known that anatomical scales are effective for measuring the severity of injuries and for predicting results. Physiological scales measure the dynamic component after trauma, with a great influence on the prognosis of injured patients. Metabolic scales, both lactate and base deficit, are reflections of tissue hypoperfusion states and therefore shock. The combined scales are used for prediction and comparative assessment of results. The inclusion of factors that influence the prognosis of trauma patients has led to the development of new scales. However, they lack external validation studies for their widespread use. Until these validation studies are conducted caution should be taken with the use of existing scales

For many years now our research team has been involved in an effort (both theoretical and technological) that can be labeled as an attempt to investigate the notion of cooperation from the 'participation' or 'contribution' perspective. From our perspective, it encompasses a set of situations in which different actors identified or unidentified, ratified or not, distributed in space and time, contribute to a sometimes ill-defined collective goal, using most of the time low-overhead web-based technologies. Doing so, people participate to a collective design that aims at generating a bunch of perpetually moving collective knowledge and decisions submitted to discussion, negotiation and sometimes dismissal. To avoid the design of services as a repeated 'one-shot' process we have gradually built a transverse software infrastructure that can be used in various projects aiming to design participatory services using complex knowledge and cooperations. Thanks to this “non-disposable” infrastructure, the participatory services designed take profit from the scientific outcomes of each previous project.

La relación entre los tiempos de respuesta y la mortalidad de los pacientes politraumatizados en la denominada “hora de oro” sigue siendo tema de debate. El objetivo del presente estudio es determinar las variables relacionadas con la mortalidad en dichos pacientes y la influencia de los tiempos de respuesta de los Servicios Médicos de Emergencia en dicha mortalidad. Para ello se analizaron los datos del Registro “Major Trauma de Navarra” (cohorte retrospectiva de pacientes politraumatizados atendidos por el sistema sanitario de Navarra) durante los cuatro años comprendidos entre 2010 y 2013. De los 217 casos de trauma disponibles para el análisis, fallecieron 42 (19%). En el análisis multivariante no se encontró asociación significativa entre los diferentes tiempos de respuesta y la mortalidad: llegada a la escena (odds ratio (OR) 1,0; intervalo de confianza al 95% (IC) de 0,99 a 1,01), en el escenario (OR 1,00; IC 95% de 0,98 a 1,02) y tiempo total (OR 1,00; IC 95% de 0,99 a 1,01). Las variables que influyen en la mortalidad son la edad del paciente y la gravedad de las lesiones medidas por el Triage-Revised Trauma Score (T-RTS) prehospitalario y el New Injury Severity Score (NISS). La mortalidad de los pacientes politraumatizados atendidos por el sistema de emergencias en nuestra región está influida por la edad, y por la intensidad de la agresión sufrida determinada por el T-RTS prehospitalario y por el NISS. Los tiempos de respuesta prehospitalarios no influyen significativamente. The relation between response times and mortality of polytrauma patients in the so-called “golden hour” continues to be a subject of debate. The purpose of this study is to determine the variables related to mortality in these patients and the influence of response times of the Emergency Medical Services in this mortality. To this end, the data in the “Major Trauma of Navarre” Register (retrospective cohort of polytrauma patients attended to by the Navarre Health Service) were analyzed for the four year period between 2010 and 2013. Of the 217 trauma cases available for the analysis, 42 (19%) died. No significant association was found in the multivariate analysis between the different response times and mortality: arrival at the scene (odds ratio (OR) 1.0; 95% confidence interval (CI) from 0.99 to 1.01), in the scenario (OR 1.00; 95% CI from 0.98 to 1.02) and total time (OR 1.00; 95% CI from 0.99 to 1.01). The variables that influenced mortality are patient age and severity of injuries measured by the prehospital Triage- Revised Trauma Score (T-RTS) and the New Injury Severity Score (NISS). The mortality of polytrauma patients attended to by the emergency system in our region is influenced by age and by the intensity of the aggression suffered, determined by the prehospital T-RTS and by the NISS. The response times of the hospital do not have a significant influence.

28th European Photovoltaic Solar Energy Conference and Exhibition; 4773-4782, Islands, as isolated territories usually far from the mainland, have extra costs compared to continental areas in their access to conventional energy sources. In spite of the fact that islands are hardly ever granted with this kind of energy, depending on the site, they normally have plenty of renewable energy resources. In this work, photovoltaic systems integration on islands is analysed from the residential viewpoint, taking into account some examples of regulations in force on some islands, as well as in discussion for their implementation in the near future, the goal is to investigate the economics of the results for different combinations with regard to existing conventional generation, together with the achievement of certain percentages of photovoltaic energy penetration, also considering some aspects in the optimisation of their electrical energy management as a whole. In this way, considering a base case of a typical residential load in a hypothetical island, sensitivity studies using the HOMER software package are performed to analyse different scenarios that may arise in islands around the world, mainly regarding economics in photovoltaic systems integration. General conclusions are reached for a comparative analysis of the considered scenarios.