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Ara es mostren els items 26-43 de 43

    • Low-level radon activity concentration—A metroRADON international intercomparison 

      Otáhal, Petr; Fialova, Eliska; Vosahlik, Josef; Wiedner, Hannah; Grossi, Claudia; Vargas Drechsler, Arturo; Michielsen, Nathalie; Turtiainen, Tuukka; Luca, Aurelian; Woloszczuk, Katarzyna; Beck, Thomas R. (2022-05-10)
      Article
      Accés obert
      An international comparison of continuous monitors measuring radon activity concentration was performed to validate the traceability of the European radon calibration facilities. It was carried out by comparing the secondary ...

    • Metrology for low-cost CO2 sensors applications: the case of a steady-state through-flow (SS-TF) chamber for CO2 fluxes observations 

      Curcoll Masanes, Roger; Morguí, Josep-Anton; Kamnang, Armand; Cañas, Lidia; Vargas Drechsler, Arturo; Grossi, Claudia (2022-05-09)
      Article
      Accés obert
      Soil CO2 emissions are one of the largest contributions to the global carbon cycle, and a full understanding of processes generating them and how climate change may modify them is needed and still uncertain. Thus, a dense ...

    • Metrology for the mobile detection of ionising radiation following a nuclear or radiological incident - “Preparedness” 

      Neumaier, Stefan; Dombrowski, Harald; Kessler, Patrick; Luchkov, Maksym; Vargas Drechsler, Arturo; Bell, Steven; Bogucarskis, Konstantins; Kovár, Petr (De Gruyter Open Sp. z o.o., 2019)
      Article
      Accés obert

    • New metrology for radon at the environmental level 

      Röttger, Annette; Röttger, Stefan; Grossi, Claudia; Vargas Drechsler, Arturo; Curcoll Masanes, Roger; Otáhal, Petr; Hernández Ceballos, Miguel Ángel; Cinelli, Giorgia; Chambers, Scott Dudley; Barbosa, Susana Alexandra; Ioan, M. R.; Radulescu, Ileana (2021-09-23)
      Article
      Accés obert
      Radon gas is the largest source of public exposure to naturally occurring radioactivity. However, radon is also a useful tracer for understanding atmospheric processes, assessing the accuracy of chemical transport models, ...

    • Quality study of electret radon flux monitors by an “in situ” intercomparison campaign in Spain 

      Grossi, Claudia; Vargas Drechsler, Arturo; Arnold, Delia (International Energy Agency, 2011)
      Text en actes de congrés
      Accés obert
      Radon is nowadays used as a tracer for atmospheric transport model validation because of its physical and chemical characteristics. 222Rn source term characterization becomes necessary for more accurate validations into ...

    • Radon behavior investigation based on cluster analysis and atmospheric modelling 

      Gutiérrez Álvarez, Isidoro; Guerrero Márquez, José Luis; Martín, Julia E.; Adame, José Antonio; Vargas Drechsler, Arturo; Bolívar Raya, Juan Pedro (2019-03-15)
      Article
      Accés obert
      Radon measurements were performed in Huelva, a city located near a phosphogypsum repository in the SW of the Iberian Peninsula, between March 2015 and March 2016. The mean values of this gas oscillate between 5.6 and 10.9 ...

    • Radon metrology for use in climate change observation and radiation protection at the environmental level 

      Röttger, Stefan; Röttger, Annette; Grossi, Claudia; Vargas Drechsler, Arturo; Karstens, Ute; Cinelli, Giorgia; Chung, Edward; Kikaj, Dafina; Rennick, Chris; Mertes, Florian; Radulescu, Ileana (European Geosciences Union (EGU), 2022-03-10)
      Article
      Accés obert
      Radon (222Rn) gas is the largest source of public exposure to naturally occurring radioactivity and the identification of radon priority areas is required by the Council Directive 2013/59/Euratom. Radon is also used as a ...

    • Radon transport events associated with the impact of a NORM repository in the SW of Europe 

      Gutiérrez Álvarez, Isidoro; Guerrero Márquez, José Luis; Martín Domínguez, José Enrique; Adame, José Antonio; Vargas Drechsler, Arturo; Bolívar Raya, Juan Pedro (Elsevier, 2021-11-15)
      Article
      Accés obert
      Two radon measurement stations located to the north and south of a NORM (Naturally Occurring Radioactive Materials) repository of phosphogypsum (southwest of Europe) were used to monitor radon behavior during 2018. The ...

    • REFLECT – Research flight of EURADOS and CRREAT: Intercomparison of various radiation dosimeters onboard aircraft 

      Ambrožová, Iva; Beck, Peter; Benton, Eric R.; Bottollier-Depois, Jean-Francois; Caresana, Marco; Vargas Drechsler, Arturo (2020-09-01)
      Article
      Accés obert
      Aircraft crew are one of the groups of radiation workers which receive the highest annual exposure to ionizing radiation. Validation of computer codes used routinely for calculation of the exposure due to cosmic radiation ...

    • Study of the daily and seasonal atmospheric CH4 mixing ratio variability in a rural Spanish region using Rn-222 tracer 

      Grossi, Claudia; Vogel, F. R.; Curcoll, Roger; Agueda Costafreda, Alba; Vargas Drechsler, Arturo; Rodó, Xavier; Morguí, Josep Anton (2018-04-26)
      Article
      Accés obert
      The ClimaDat station at Gredos (GIC3) has been continuously measuring atmospheric (dry air) mixing ratios of carbon dioxide (CO2) and methane (CH4), as well as meteorological parameters, since November 2012. In this study ...

    • Studying radon exhalation rates variability from phosphogypsum piles in the SW of Spain 

      López Coto, Israel; Mas Balbuena, Jose Luis; Vargas Drechsler, Arturo; Bolivar Raya, Juan Pedro (2014-09-05)
      Article
      Accés restringit per política de l'editorial
      Nearly 1.0×108 tonnes of phosphogypsum were accumulated during last 50 years on a 1200ha disposal site near Huelva town (SW of Spain). Previous measurements of exhalation rates offered very variable values, in such a way ...

    • The European radiation dosimetry group – Review of recent scientific achievements 

      Ruehm, Werner; Ainsbury, Elizabeth A.; Breustedt, Bastian; Caresana, M.; Vargas Drechsler, Arturo (2020-03-01)
      Article
      Accés obert
      The European Radiation Dosimetry Group (EURADOS) is a network of organizations and scientists promoting research and development in the dosimetry of ionizing radiation, contributing to harmonization in dosimetry practice ...

    • The mapping of alpha-emitting radionuclides in the environment using an unmanned aircraft system 

      Royo Chic, Pablo; Vargas Drechsler, Arturo; Guillot Colls, Tania; Sáiz Broch, David; Pichel, Jonathan; Rábago, Daniel; Duch Guillen, María Amor; Grossi, Claudia; Luchkov, Maksym; Dangendorf, Volker; Krasniqi, Faton (Multidisciplinary Digital Publishing Institute (MDPI), 2024-02-29)
      Article
      Accés obert
      The protection of first responders from radioactive contamination with alpha emitters that may result from a radiological accident is of great complexity due to the short range of alpha particles in the air of a few ...

    • The metrological traceability, performance and precision of european radon calibration facilities 

      Beck, Thomas R.; Antohe, Andrei; Cardellini, Francesco; Cucos, Alexandra; Fialova, Eliska; Grossi, Claudia; Hening, Kinga; Jensen, Jens; Kastratovic, Dejan; Krivosic, Matej; Lobner, Patrick; Vargas Drechsler, Arturo (2021-11-19)
      Article
      Accés obert
      An interlaboratory comparison for European radon calibration facilities was conducted to evaluate the establishment of a harmonized quality level for the activity concentration of radon in air and to demonstrate the ...

    • Unmanned aircraft based gamma spectrometry system for radiological surveillance 

      Luchkov, Maksym; Neumaier, Stefan; Vargas Drechsler, Arturo (2020)
      Comunicació de congrés
      Accés obert
      In the framework of the European “Preparedness” project, PTB is developing a spectrometer based dosimetric system that can be operated while being attached to an unmanned aerial vehicle (UAV). Built around 1.5" CeBr3 ...

    • Validation of aerosol low-level activities by comparison with a deep underground laboratory 

      Camacho García, Antonia; Laubenstein, M.; Vargas Drechsler, Arturo; Serrano Carreño, M. Isabel; Vallés, I.; Plastino, W.; Duch Guillen, María Amor (2014-05)
      Article
      Accés restringit per política de l'editorial
      The activitiesonair filters oftheradionuclides 40K and 137Cs weremeasuredinanaboveground laboratoryandcomparedwiththeactivitiesmeasuredinanundergroundlaboratory.Theaverage relativedifferenceswerelowerthan20%for 137Cs and ...

    • Variability of methane fluxes at the Ebro Delta due to rice field: comparison between inventories and Radon Tracer Method based results. 

      Curcoll Masanes, Roger; Morguí, Josep-Anton; Agueda Costafreda, Alba; Vargas Drechsler, Arturo; Grossi, Claudia (2023)
      Text en actes de congrés
      Accés obert
      The Ebro River Delta, in the northwestern Mediterranean basin, has an extension of 320 km2 and is mainly covered by rice fields. Rice fields are known to be one of the main sources of anthropogenic methane emissions, and ...

    • Xenon-133 and caesium-137 releases into the atmosphere from the Fukushima Dai-ichi nuclear power plant: Determination of the source term, atmospheric dispersion, and deposition 

      Stohl, Andreas; Seibert, Petra; Wotawa, Gerhard; Arnold Arias, Dèlia; Burkhart, J. F.; Eckhardt, Sabine; Tapia Fernández, Carlos; Vargas Drechsler, Arturo; Yasunari, Teppei J. (2012-03-01)
      Article
      Accés obert
      On 11 March 2011, an earthquake occurred about 130 km off the Pacific coast of Japan's main island Honshu, followed by a large tsunami. The resulting loss of electric power at the Fukushima Dai-ichi nuclear power plant ...