Results 51 to 60 of about 691 (166)

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

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

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

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

High Methane Production and Emission From Tropical Seagrasses Through Methylotrophic Methanogenesis

Geophysical Research Letters, Volume 52, Issue 5, 16 March 2025.
Abstract Methane (CH4) is a potent greenhouse gas that reduces the carbon sequestration capacity of seagrass meadows. However, our understanding of CH4 production and emission from these important carbon sinks is limited. Here we conducted biogeochemical experiments to identify methylotrophic methanogenesis as the primary methanogenesis pathway in a ...
Guiyuan Dai, Xiaogang Chen, Guangchao Zhuang, Yan Zhang, Peiyuan Zhu, Feng Ju, Ling Li   +6 more
wiley   +1 more source

Dual 222Rn Models for Tracing Groundwater–Lake Water Exchange in a Flow‐Through Lake

Water Resources Research, Volume 61, Issue 3, March 2025.
Abstract Groundwater–lake water exchange in flow‐through lakes which includes both groundwater discharge into the lake and lake water seepage into the aquifer, is crucial for sustaining lake wetland ecosystems; however, these two processes are rarely addressed simultaneously by tracer methods.
Yue Hu, Peng Sun, Fu Liao, Yirong Liang, Bai Gao, Zhi Rao, Xiaodong Chu, Yuanyuan Liu, Yang Yang, Yongzhen Fu, Guangcai Wang   +10 more
wiley   +1 more source

Regulated expression of theSaccharomyces cerevisiaeDNA repair gene RAD7 in response to DNA damage and during sporulation [PDF]

Nucleic Acids Research, 1990
The RAD7 gene of Saccharomyces cerevisiae affects the proficiency of excision repair of DNA damaged by UV light. Here, we report our studies on the regulation of the RAD7 gene in response to UV irradiation and during sporulation. RAD7 transcript levels increased 6-fold within 40 min of exposure of cells to 37 J/m2 of UV light.
J S, Jones, L, Prakash, S, Prakash
openaire   +2 more sources

Sandy Subterranean Estuaries Minimize Groundwater Nitrogen Pollution Impacts on Coastal Waters

Geophysical Research Letters, Volume 52, Issue 3, 16 February 2025.
Abstract Widespread anthropogenic activities pollute groundwater that eventually seeps out to the coastal ocean. Here, we resolve nutrient transformations and fluxes in 11 sandy subterranean estuaries (STEs) with contrasting nutrient sources and development trajectories.
Xiaogang Chen, Isaac R. Santos, Jinzhou Du, Bochao Xu, Joseph J. Tamborski, Ding He, Neven Cukrov, Christian J. Sanders, Jianan Liu, Peiyuan Zhu, Yan Zhang, Ling Li   +11 more
wiley   +1 more source