Results 51 to 60 of about 1,000 (198)

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

Evaluation of Radon (222Rn) Exhalation Rates from Imported Granite Tiles Used as a Building Materials in Erbil Governorate, Kurdistan Region -Iraq

Zanco Journal of Pure and Applied Sciences, 2023
The present study aims to evaluate the activity concentration of effective radium content (Raeff), and radon exhalation rates (222Rn) of 21 imported granite samples that are used as building materials in Erbil Governorate.
Hindren R. Awla ,Habeeb H. Mansour
doaj   +1 more source

The yeast RAD7 and RAD16 genes are required for postincision events during nucleotide excision repair. In vitro and in vivo studies with rad7 and rad16 mutants and purification of a Rad7/Rad16-containing protein complex.

The Journal of biological chemistry, 1998
In eukaryotes, nucleotide excision repair (NER) is a complex reaction requiring multiple proteins. In the yeast Saccharomyces cerevisiae, two of these proteins, Rad7 and Rad16, are specifically involved in the removal of lesions from transcriptionally silent regions of the genome in vivo. Extracts prepared from rad7 or rad16 mutant cells are deficient,
S H, Reed, Z, You, E C, Friedberg
openaire   +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

Indoor risk assessment of radon gas in the science college buildings-University of Mustansiriyah using RAD-7 detector

Iraqi Journal of Physics, 2019
In the present work, a set of indoor Radon concentration measurements was carried out in a number of rooms and buildings of Science College in the University of Mustansiriyah for the first time in Iraq using RAD-7 detector which is an active method for ...
Ali A. Ridha
doaj   +1 more source

Assessment of radon exhalation rates in mineral rocks used in building decoration in Nigeria

Radiation Protection and Environment, 2021
The recent interest in the applications of mineral rocks for interior building decoration has been a major concern from the radiological perspective because the breaking down of rocks into various shapes and sizes releases radioactive gaseous element ...
Mustapha Kola Lawal, Paul Sola Ayanlola, Olukunle Olaonipekun Oladapo, Michael Olatunde Oni, Abraham Adewale Aremu   +4 more
doaj   +1 more source

Incorporating an Elevated Perfusion Index in the Right Hand Enhanced Screening Sensitivity for Critical Aortic Arch Obstruction in Newborn Infants

Acta Paediatrica, Volume 114, Issue 7, Page 1570-1575, July 2025.
ABSTRACT Aim Newborn infants with critical aortic arch obstruction are often undiagnosed at discharge, despite screening. This study investigated if adding the perfusion index improved early detection. Methods We retrospectively studied 38 newborn infants with critical aortic arch obstruction, who were routinely screened in 2014–2019 by 13 Swedish ...
Katarina Lannering, Ingegerd Östman‐Smith, Mats Mellander   +2 more
wiley   +1 more source

Radiocarbon analysis reveals decomposition of old soil organic carbon into dissolved inorganic carbon in a subtropical mangrove ecosystem

Limnology and Oceanography, Volume 70, Issue 6, Page 1740-1754, June 2025.
Abstract The outwelling of remineralized dissolved inorganic carbon (DIC) from the subsurface soil layer through tidal pumping has recently been noted for its importance in the blue carbon budget of mangroves. However, the age of soil organic carbon (SOC) that has been decomposed into DIC remains uncertain.
Wataru Nakamura, Kojin Tsuchiya, Kenta Watanabe, Toshihiro Miyajima, Yosuke Miyairi, Yusuke Yokoyama, Phyo Thet Naing, Tomohiro Kuwae, Jun Sasaki   +8 more
wiley   +1 more source

A mangrove nitrous oxide sink attenuates methane climate impacts

Limnology and Oceanography Letters, Volume 10, Issue 3, Page 298-307, June 2025.
Abstract We resolve mangrove nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2) vertical exchange with the atmosphere and lateral exchange with the ocean. Our new observations in Brazil were combined with literature data to reassess the overall mangrove carbon sequestration potential.
Alex Cabral, Juliana Hayden, Bárbara Viana, Marcos de Almeida, Tiago Passos, Roberto Barcellos, Stefano Bonaglia, Vanessa Hatje, Isaac R. Santos   +8 more
wiley   +1 more source

Monitoring of radon concentration for different building types in Covenant University, Nigeria

Cogent Engineering, 2020
Radon monitoring is essential in determining the actual level of exposure in buildings. Of all the reviewed works on indoor radon level, little to none was done on comparative radon concentration study of different building structures in the study area ...
M. R. Usikalu, C. A. Onumejor, J. A. Achuka, A. Akinpelu, M. Omeje, T. A. Adagunodo   +5 more
doaj   +1 more source