Mathematical models are tools that can facilitate the instrumentation of the Integrated Water Resources Management (IWRM). The first basin models to be developed were completely hydrological; today, due to the urgent need to plan the sustainable use of water resources, new models are needed that in addition to hydrology also incorporate social, economic, legal, environmental and other aspects. The objective of this work was to identify the characteristics that mathematical basin models must have in order to satisfy the requirements of IWRM. To achieve this, the conclusions of the main international conferences on water and the environment were analyzed; these were conferences in which IWRM was promoted as a strategy to face the challenges of both sectors. IWRM considers social participation as a key element in the decision-making process; consequently, the models must be accepted 722 H. Silva-Hidalgo et al. and applied, and their results interpreted, by those who participate in the process even if they are not modelling experts. This requires a change of perspective in the scientific community for the development of new IWRM models, in government institutions regarding their role as water administrators, and in water stakeholders regarding their role as decision-makers. The results of the analysis indicate that models for IWRM must be accessible to non-expert users, integrate different viewpoints, representing adequately the problem to be solved, in addition be flexible and have a structure focused on practical solutions.
La radiación en aguas termales utilizadas como zonas recreativas puede representar un problema de salud pública. El objetivo fue cuantificar el nivel de radón (222Rn) en aire y evaluar la dosis de radiación en los baños termales establecidos en San Diego de Alcalá, Chihuahua, México. Se seleccionó un espacio de esparcimiento, se cerró puerta y ventana para simular la utilización del baño termal por el público. El nivel de 222Rn en aire se detectó utilizando un instrumento AlphaGUARD (Professional Radon Monitor) de la marca GENITRON. Éste se cuantificó en Bq m-3 en diferentes tiempos 10, 20, 30, 40, 50 y 60 min, se realizaron tres mediciones; la primera en la epoca de invierno 2014 (enero) y dos en la epoca de primavera de 2015 (mayo y junio). El análisis estadístico fue mediante una regresión para cada medición. Se estimó la Dosis Promedio Anual (DPA) efectiva de inhalación de radón a la que se encuentran expuestas las personas que acuden a los baños termales dependiendo del número de visitas y tiempo de permanencia, el rango varió de 0.0005±4x10-4 mSv cuando se visitan los baños 12 veces al año con un permanencia de 10 minutos, hasta 0.0352±1.1x10-2 mSv visitando una vez a la semana por un periodo de 60 minutos.
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