Results 71 to 80 of about 943 (203)

Radon Exhalation Rate from Building Materials Using CR-39 Nuclear Track Detector [PDF]

, 2011
Humans are exposed to radiological hazards from natural radiation sources that exist mainly in the earth’s crust. Radon is a noble gas and is formed by the decay of 226Ra, which is one of the nuclides formed in the disintegration series from 238U ...
F. S. Ereeş, S. Çam, N. Topçu, D. Biçak   +3 more
core   +3 more sources

Indoor radon and thoron from building materials: Analysis of humidity, air exchange rate, and dose assessment

Nuclear Engineering and Technology, 2020
Building materials contribute significantly to the indoor radon and thoron levels. Therefore, parameters that influence the exhalation rates of radon and thoron from building material need to be analyzed closely.
Ahmad Ciptadi Syuryavin, Seongjin Park, Muttaqin Margo Nirwono, Sang Hoon Lee   +3 more
doaj   +1 more source

Re‐assessment of the risks to public health related to the genotoxicity of styrene present in plastic food contact materials

EFSA Journal, Volume 23, Issue 6, June 2025.
Abstract The EFSA Panel on Food Contact Materials (FCM) was requested by the European Commission to re‐evaluate the potential genotoxicity of styrene after oral exposure and its safety for use in plastic FCM with a specific migration limit (SML) of 40 μg/kg food.
EFSA Panel on Food Contact Materials (FCM), Claude Lambré, Riccardo Crebelli, Maria Da Silva, Konrad Grob, Evgenia Lampi, Maria Rosaria Milana, Marja Pronk, Mario Ščetar, Georgios Theodoridis, Els Van Hoeck, Nadia Waegeneers, Claudia Bolognesi, Emma Di Consiglio, Marcel Mengelers, Zainab Al Harraq, Irene Muñoz Pilar, Sandra Rainieri, Gilles Rivière   +18 more
wiley   +1 more source

Functional Lung Imaging Identifies Peripheral Ventilation Changes in ꞵ‐ENaC Mice

Respirology, Volume 30, Issue 4, Page 335-345, April 2025.
β‐ENaC‐Tg mice have previously been shown to exhibit muco‐obstructive disease and emphysema. This study analysed lung function in β‐ENaC‐Tg mice using XV functional imaging and flexiVent assessments. XV enabled ventilation defects to be identified and localised, and the flexiVent comfirmed increased lung compliance and reduced tissue elastance ...
Nicole Reyne, Ronan Smith, Patricia Cmielewski, Nina Eikelis, Kris Nilsen, Jennie Louise, Julia Duerr, Marcus A. Mall, Mark Lawrence, David Parsons, Martin Donnelley   +10 more
wiley   +1 more source

Effect of the altitude on the concentration and exhalation rate of radon

International Journal of Low Radiation, 2014
High altitude is characterised by hypoxic and hypobaric conditions. Exposure to high altitude is known to affect human physiology, specially blood oxygen tension and saturation. Also, oxygen, carbon dioxide and vacuum are known to affect some polymers used in radon detection.
openaire   +1 more source

Aspects of an instrument for in situ measurements of radon exhalation rates

Environment International, 1988
The properties of an instrument for in situ measurements of radon-exhalation rates were investigated. Rather than enclosing the sample in a measuring volume this instrument consists of a hood which is to be placed with its open end onto the sample. By applying an electric field positively charged radon-decay products are collected on an aluminised ...
Aldenkamp, F. J., Put, L. W., De Meijer, R. J.   +2 more
openaire   +2 more sources

T1‐T2 Interplay in the Complex Immune Landscape of Severe Asthma

Immunological Reviews, Volume 330, Issue 1, March 2025.
ABSTRACT Asthma is orchestrated by an aberrant immune response involving a complex interplay between multiple inflammatory cell types. An increase in Th2 cells in the asthmatic airway is a hallmark of asthma, and biologics blocking their effector functions have been life‐changing for many severe asthma patients who poorly respond to immunosuppression ...
Marc Gauthier, Sagar L. Kale, Anuradha Ray   +2 more
wiley   +1 more source

Radon and thoron exhalation rate measurements from building materials used in Serbia

Nukleonika, 2020
The second most important source of indoor radon, after soil beneath dwelling, is building material. With the increase in environmental awareness and new energy-saving policies, residents tend to replace the existing windows with tighter windows, which ...
Čeliković Igor T., Pantelić Gordana K., Živanović Miloš Z., Vukanac Ivana S., Krneta Nikolić Jelena D., Kandić Aleksandar B., Lončar Boris B.   +6 more
doaj   +1 more source

Improvement of glucocorticoid sensitivity and attenuation of pulmonary allergic reactions by exogenous supplementation with betaine in HDM and LPS‐induced allergic mouse model

Clinical and Translational Allergy, Volume 15, Issue 2, February 2025.
Abstract Background Childhood asthma is a heterogeneous disease that exhibits different characteristics and varying severity; however, the metabolite alterations underlying the difference in asthma severity, especially in severe asthma, are not well understood.
Qing Wang, Wen He, Yufeng Zhou, Yun Liu, Xiaoling Li, Yingwen Wang, Jiayu Wang, Xiao Han, Xiaobo Zhang   +8 more
wiley   +1 more source

Verification of the applicability of the RAD7 radon monitor to the solid radon source exhalation reference model

Nuclear Engineering and Technology
The RAD7 radon monitor, based on the electrostatic collection method, is sensitive to humidity during measurements, necessitating the use of a desiccant to maintain the relative humidity in its built-in chamber less than 10 %.
Huiying Li, Ruomei Xie, Zhongkai Fan, Shuaibin Liu, Shuai Yuan, Jiale Sun, Haibo Yi, Zhipeng Liu, Jiulin Wu, Hongzhi Yuan, Yanliang Tan   +10 more
doaj   +1 more source