Results 41 to 50 of about 106 (92)

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

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

Radon Gas Risk Indices in Water on Fractured Basement of Ayetoro Housing Scheme, Oyo [PDF]

Physics Access
Radon gas, a naturally occurring radioactive element, presents significant health risks, particularly in areas with fractured basement geology, where subsurface characteristics can elevate its concentration.
Emmanuel A Oni, Johnson A Abilawon, Oluwaseun O Oloyede, Abraham A Aremu, Olukunle O Oladapo, Temitayo A Olajide, Mustapha K Lawal, Paul S Ayanlola, Olatunde M Oni   +8 more
doaj   +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

Investigation of the indoor 222Rn and 220Rn levels in the residential environment and estimation of the annual effective radiation dose for ordinary residents.

PLoS ONE, 2021
To evaluate the health risk of radon and its progeny, a large amount of accurate monitoring data is needed according to the theory and practice of health risk assessment. However, the indoor radon levels in different regions in China and worldwide reveal
Xiaohong Li, Hongyang Ke, Chuan Ouyang, Xiaoli Yu, Yumei Liu, Fei Wang, Wanwei Li   +6 more
doaj   +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

Estimation of radon concentration in soil and groundwater samples of Northern Rajasthan, India

Journal of Radiation Research and Applied Sciences, 2016
In the present investigation, analysis of radon concentration in 20 water and soil samples collected from different locations of Bikaner and Jhunjhunu districts of Rajasthan, India has been carried out by using RAD7 an electronic Radon detector.
Sudhir Mittal, Asha Rani, Rohit Mehra
doaj   +1 more source

Annual effective dose from 222Rn in groundwater of a Nigeria University campus area

Applied Water Science, 2021
Radon, the heaviest among the noble gases in the periodic table of element is a radioactive nuclide that is naturally available in rocks, soil and water.
Matthew O. Isinkaye, Fadeke Matthew-Ojelabi, Clement O. Adegun, Paulinah O. Fasanmi, Fatai A. Adeleye, Olawale G. Olowomofe   +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