Results 51 to 60 of about 469 (178)

Estimation of indoor radon levels using etched track detector

Journal of Radiation Research and Applied Sciences, 2018
In this investigation, the activity levels of Indoor Radon-222, effective radium contents, exhalation rate of radon, and annual effective dose are reported for different indoor locations (Offices, Laboratories, Meeting rooms, and Storerooms) at two ...
Basma A. El-Badry, Tayseer I. Al-Naggar
doaj   +1 more source

Metabolic Functions and Mechanisms of Selenium, Selenocysteine, and GPX4 Mediated Immune Regulation Through Autophagy in Solid Tumors

Food Science &Nutrition, Volume 13, Issue 12, December 2025.
This paper focuses on selenium, selenocysteine, and GPX4, elaborating on their metabolic functions and mechanisms in mediating immune regulation through autophagy in solid tumors. It explores the characteristics of selenium metabolism in tumors and the roles of related enzymes, providing new directions for cancer treatment.
Liang Yang, Yu Jiang, Haoyue Wu, Jinnan Sun, Xinyue Huang, Jingfeng Hong, Bin Zheng, Jinmiao Zhu   +7 more
wiley   +1 more source

Advances in metals and metal hybrids‐based gas sensors and their applications

Rare Metals, Volume 44, Issue 12, Page 9363-9413, December 2025.
Graphical abstract Abstract As a kind of node on the Internet of Things, gas sensor is specifically utilized for detecting gaseous chemical species and humidity. Functioning as a kind of discrete electronic components, gas sensors have been extensively implemented in many fields, including agricultural production, public safety, healthcare activity ...
Danyao Qu, Bolang Cheng, Xinyi Shao, Jinyong Hu, Suo Bai, Yong Zhang, Weiwei Wu, Hossam Haick   +7 more
wiley   +1 more source

Artificial Neural Network Optimization to Estimate Radon in Soil

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 18, Issue 5, October 2025.
ABSTRACT Modeling and estimating radon concentration are of crucial interest to support health protection campaigns. In the literature, many studies concentrated on indoor radon, while few of them investigated the outdoor radon spatial distribution and the factors that influence its formation.
Veronica Distefano, Sandra De Iaco, Iman Masoumi   +2 more
wiley   +1 more source

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

An Animal Model of Liuzijue Based on Kinematic Features Exploration: A Pilot Study Conducting in COPD

Immunity, Inflammation and Disease, Volume 13, Issue 8, August 2025.
In this study, we initiated an exploration based on the kinematic characteristics of Liuzijue Qigong, aiming to develop an animal model of Liuzijue suitable for animal experimentation. The outcomes of the research have substantiated the feasibility of this model establishment protocol.
Jian Li, Xiang Ji, Kangxia Li, Min Cao, Yuxin Sun, Chengbing Cao, Zifei Yin, Xin Wang, Fanfu Fang, Cai‐tao Chen, Wei Gu   +10 more
wiley   +1 more source

Non‐Invasive Diagnosis of Hypertrophic Cardiomyopathy by Breath

Advanced Sensor Research, Volume 4, Issue 7, July 2025.
The use of sensor technologies for the diagnosis of hypertrophic cardiomyopathy (HCM) by identification of volatile organic compounds (VOCs) in breath samples. By combining gas chromatography‐mass spectrometry (GC‐MS) and electronic nose (eNose) platforms, specific VOC patterns associated with HCM are detected and analyzed.
Yael Hershkovitz‐Pollak, Manhal Habib, Yoav Y. Broza, Olga Katz, Harry Rakowski, Hossam Haick   +5 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

Exhalation rate of radon-222 from concrete and cement mortar

Nukleonika, 2018
The main sources of radon in the air of dwellings are soil, building materials, and groundwater. This study aimed to determine the exhalation rate of 222Rn from samples made of concrete and cement mortars, as well as to evaluate by means of gamma ...
Perna Allan Felipe Nunes, Paschuk Sergei Anatolyevich, Corrêa Janine Nicolosi, Narloch Danielle Cristine, Barreto Rafael Carvalho, Claro Flávia Del, Denyak Valeriy   +6 more
doaj   +1 more source