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This article highlights the relevance of indoor radon monitoring for occupational health protection, disease prevention, and compliance with safety regulations. Radon, a colorless, odorless, and tasteless radioactive gas, is a leading cause of lung cancer after tobacco smoking, and therefore in situ monitoring is fundamental to identify areas with high radon levels so that remediation measures must be implemented to reduce indoor exposure. The article gives an overview of the regulations in force in Portugal for indoor radon monitoring and identifies the responsibilities of different authorities and organizations in ensuring compliance with radiological protection requirements. It also outlines the legal framework for radon protection in Portugal, including the identification of reference levels for radon concentration in workplaces and dwellings, and the need to implement measures concerning indoor radon exposure reduction. Additionally, it is detailed the process of monitoring radon in indoor environments, including the selection of an appropriate measurement device and the necessary measurement time, and the need to inform and train workers about the risks associated with radon exposure. In short, this review provides information on the importance of radon monitoring and the measures required to ensure public safety. [ABSTRACT FROM AUTHOR]

Currently, there is an increasing pressure to decarbonize and meet energy demands. In this regard, the usage of renewable energy sources is becoming more prominent. Biomass energy can significantly contribute to this effort. However, due to logistical costs, its exploitation is often considered less 'desirable.' Sometimes, particularly in the context of residual biomass, open burning on site is desirable. This study aims to optimize the residual biomass supply chain by leveraging digitalization's advantages, thereby creating a new model for this purpose. Methodologically, this research initially adopted an empirical approach, analyzing documents from a project that recreated the current scenario. In its second phase, the study involved a literature review to gather insights needed for developing the final model. Consequently, this study offers three major contributions: a detailed mapping of the current scenario, a comprehensive synthesis of the potentials of emerging technologies in the supply chain, and a model illustrating the integration of these technologies in the context of residual biomass. Thus, this research presents an opportunity to transform a common 'leftover' into a value-added material. To better assess the model's value, two analyses, PEST and SWOT, were conducted to align the conceptual proposal with real-world contexts. • Residual biomass is rarely used due to its logistical costs. • Digitalization could potentiate the of supply chains optimization. • Technologies 4.0 can boost renewable energy use and reducing the risk of fire. [ABSTRACT FROM AUTHOR]