Results 41 to 50 of about 712 (184)

The Approach and Device for Water Radon Measurement with Overflowing Electret

Journal of Isotopes, 2016
To solve the difficulties in “original” radon concentration measuring, this paper proposed an overflow type electret radon concentration measurement method and device.
ZHANG Hui1;DENG Jun2;XU Le-chang1;LI Xian-jie1
doaj   +1 more source

Measurement of Radon Exhalation Rate from Pottery Meal Dishes in Erbil City by using Passive and Active Techniques [PDF]

Kirkuk Journal of Science, 2012
Solid State Nuclear Track Detectors (SSNTDs) of type CR-39 has been used in this study as a passive method to measure the radon activity concentration, radon exhalation rate (in terms of area and mass), and effective radon content in the pottery meal ...
Salih O. Haji, Ali H. Ahmed
doaj   +1 more source

Correction of the radon exhalation rate using the Kalman filtering to reduce measurement errors

Nuclear Engineering and Technology
The RAD7 detector is widely used for measuring the radon exhalation rate from the surfaces of media such as soil, rocks, and building materials. However, during the measurement process, the accuracy of the results is prone to interference due to the ...
Haoyu You, Jianfeng Tang, Zhongkai Fan, Ruomei Xie, Hongzhi Yuan, Yanliang Tan   +5 more
doaj   +1 more source

Experimental technique to measure thoron generation rate of building material samples using RAD7 detector [PDF]

Radiation Measurements, 2013
Thoron ( 220 Rn) is the second most abundant radon isotope in our living environment. In some dwellings it is present in significant amount which calls for its identification and remediation. Indoor thoron originates mainly from building materials. In this work we have developed and tested an experimental technique to measure thoron generation rate in ...
Csige, István, Szabó, Zsuzsanna, Szabó, Csaba   +2 more
openaire   +2 more sources

Tropicalization Enhances Mangrove Methane Emissions to the Atmosphere

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Organic‐rich mangrove soils release CH4, partially offsetting the climate benefits of high organic carbon sequestration. However, the local and global drivers and variability of mangrove CH4 emissions remain poorly understood. Here, we quantify water‐atmosphere CH4 emissions over hourly, daily, and weekly time scales in an Australian mangrove ...
Xiaogang Chen, Isaac R. Santos, Tristan McKenzie, Faming Wang, Gloria M. S. Reithmaier, Luiz C. Cotovicz Jr, Ceylena Holloway, Yvonne Y. Y. Yau, Shengjie Hu, Ling Li   +9 more
wiley   +1 more source

Measurement of radon and thoron concentrations of soil- gas in Al-Kufa city using RAD-7 detector

Iraqi Journal of Physics, 2021
This work represents the set of measurements of radon and thoron concentrations levels of soil-gas in Al-Kufa city in Iraq using electric Radon meter (RAD-7). Radon and thoron concentration were measured in soil-gas in 20 location for three depth of (50,
Ali A. Al-Hamidawi
doaj  

Overlooked seasonal groundwater nutrient fluxes rival anthropogenic point sources across a variable land‐use tidal river

Limnology and Oceanography, Volume 70, Issue 12, Page 3815-3831, December 2025.
Abstract Understanding groundwater–surface water connectivity in tidal freshwater zones is essential for managing ecosystems within the riverine–estuarine continuum. Groundwater discharge is a key source of dissolved nutrient loads that can lead to eutrophication, deoxygenation, and other ecosystem imbalances in coastal environments.
James A. Padilla‐Montalvo, Douglas R. Tait, Michael J. Reading, Benjamin T. Stewart, Angus Ferguson, Iremar Fernandez‐Vazquez, James Z. Sippo, Shivanesh Rao, Mitch Call, Christopher Ralph, Josh Guyat, Jenny Rogers, Merran Griffith, Damien T. Maher   +13 more
wiley   +1 more source

Geospatial examination of tap water pollution in residential areas of the Al-Abbasiya neighborhood, Najaf, Iraq [PDF]

E3S Web of Conferences
The present study measured radon (222Rn) levels in the drinking water obtained from thirty houses distributed within Al-Abbasiya District, Najaf City, Iraq to estimate public health risk and adherence to safety standards set by international ...
Ridha Raya Fadhil, Abbas Shurooq Lafta, Matar Lina Majeed, Yousif Saja Nafea, Alhiti Laith S.   +4 more
doaj   +1 more source

Using 222Rn to Determine Groundwater Velocities in a Braidplain Aquifer

Hydrological Processes, Volume 39, Issue 10, October 2025.
This study assesses bank infiltration from a braided river. We find a small change in infiltration velocity for high versus low river flow periods, and a spatial variation of groundwater velocities linked to paleochannels. Consideration of more realistic groundwater flow geometries demonstrates that groundwater residence times based on conventional ...
Christy W. Songola, Leanne K. Morgan, Eddie W. Banks, Crile Doscher, Ian Cartwright   +4 more
wiley   +1 more source

Drivers of dissolved organic matter processing in subterranean estuaries

Limnology and Oceanography Letters, Volume 10, Issue 4, Page 536-546, August 2025.
Abstract Subterranean estuaries (i.e., seawater‐fresh groundwater mixing zones at coastal aquifers) are highly reactive boundaries between continental groundwater and coastal surface seawater. Because particulate organic matter is retained in shallow sediments, internal microbial transformations rely on dissolved organic matter (DOM) supply and ...
Elisa Calvo‐Martin, Xosé Antón Álvarez‐Salgado, María José Pazó Fernández, Vanesa Vieitez Dos Santos, J. Severino P. Ibánhez   +4 more
wiley   +1 more source