Results 41 to 50 of about 16,232 (191)

Sigara tütününün doğal ve yapay radyoaktivitesinin belirlenmesi

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2016
Sigara tütünündeki doğal ve yapay radyoaktivite konsantrasyonları %20 rölatif verimli n-tipi HPGe gama spektrometre kullanılarak belirlenmiştir.226Ra, 232Th, 40K, 210Pb ve 137Csradyoaktivite konsantrasyonları ölçülmüştür.
Yusuf Ağuş
doaj   +1 more source

Development of a moored radium in situ sampler to measure annual time series

Limnology and Oceanography: Methods, Volume 24, Issue 3, March 2026.
Abstract Radium is a useful tracer of sediment‐derived materials, improving our understanding of the geochemical cycling of elements at ocean boundaries. We have developed an autonomous in situ sampler to collect time series samples of radium isotopes on mooring deployments.
Lauren Kipp, Matthew A. Charette, Paul Henderson, Joshua Benedict, Igor Polyakov, Andrey Pnyushkov   +5 more
wiley   +1 more source

Gator: a low-background counting facility at the Gran Sasso Underground Laboratory [PDF]

, 2011
A low-background germanium spectrometer has been installed and is being operated in an ultra-low background shield (the Gator facility) at the Gran Sasso underground laboratory in Italy (LNGS).
, , , , , A Askin, A D Ferella, A Kish, A Manalaysay, E Aprile, E. Aprile, G. Heusser, G. Knoll, J Angle, J. Angle, L Baudis, L. Baudis, M Laubenstein, M Schumann, T Bruch, T Marrodán Undagoitia   +20 more
core   +1 more source

Study on the Standard Surface Source of Gamma-ray in High Energy Region Based on 226Ra

Journal of Isotopes
The calibration of gamma-ray detection efficiency is the basic work of radioactivity measurement. Because of the scarcity of high-energy gamma-ray standard source，it is difficult to calibrate the high-energy gamma-ray detection efficiency.
Tai KANG, Xuesong LI, Gongshuo YU, Jiang XU, Xiaolin ZHANG, Siqi GUO, Ruiyang XI, Qingjiang YU, Chunjie WANG   +8 more
doaj   +1 more source

A Novel Soil Chronometer: Uranium Comminution Ages Measure Soil Production Rates in a Deep Granitic Weathering Profile

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Soil production, through bedrock weathering, regulates landscape evolution, biogeochemical cycles, and societal sustainability, yet quantifying soil production rates (SPRs) remains difficult due to limited tools. Here, we present a new framework for measuring SPRs based on uranium comminution ages and validate this approach at a deep granitic ...
Shenghui Ouyang, Le Li, Gaojun Li, Gen K. Li   +3 more
wiley   +1 more source

Unique current connecting Southern and Indian Oceans identified from radium distributions

Scientific Reports, 2022
We examined the spatial variations in 226Ra and 228Ra (activities) concentrations from the surface to a depth of 830 m in the Indian and Southern Oceans from December 2019 to January 2020.
Mutsuo Inoue, Shotaro Hanaki, Hiroaki Kameyama, Yuichiro Kumamoto, Seiya Nagao   +4 more
doaj   +1 more source

Isotopic evidence for enhanced tidal flat productivity driven by nutrient‐rich submarine groundwater discharge

Limnology and Oceanography, Volume 71, Issue 2, February 2026.
Abstract Submarine groundwater discharge (SGD) is well recognized as a significant nutrient source in coastal oceans. However, direct evidence linking SGD‐derived nutrients to biological production across trophic levels remains limited. Here, we investigated the influence of SGD on a tidal flat ecosystem on the west coast of Korea, where high ...
Ji‐Hee Park, Hyung‐Mi Cho, Jihyun Park, Nahyeon Kwon, Guebuem Kim, Yeseul Kim, TaeKeun Rho   +6 more
wiley   +1 more source

Measurement of the 214Bi spectrum in the energy region around the Q-value of 76Ge neutrinoless double-beta decay

, 2003
In this work we present the results obtained measuring the 214Bi spectrum from a 226Ra source with a high purity germanium detector. Our attention was mostly focused on the energy region around the Q-value of 76Ge neutrinoless double-beta decay (2039.006
Aalseth, C. Tomei, Douysset, Firestone, Gilmore, H.V. Klapdor-Kleingrothaus, I.V. Krivosheina, Klapdor-Kleingrothaus, Klapdor-Kleingrothaus, O. Chkvorets   +9 more
core   +1 more source

Potential of Soils Natural Sorbents for Environmental Decontamination From 137Cs

Land Degradation &Development, Volume 37, Issue 2, Page 779-789, 30 January 2026.
ABSTRACT This study addresses the existing research gap concerning the lack of integrated data on the role of in situ soil components in the long‐term fixation of 137Cs under natural, protected, and non‐agricultural conditions. The contamination of ecosystems by radioactive isotopes, particularly 137Cs, represents a considerable environmental hazard ...
Katarzyna Szarłowicz, Filip Jędrzejek, Marcin Stobiński, Michał Skiba   +3 more
wiley   +1 more source

Radioactive impact in sediments from an estuarine system affected by industrial wastes releases [PDF]

, 2002
A big fertilizer industrial complex and a vast extension of phosphogypsum piles (12 km2), sited in the estuary formed by the Odiel and Tinto river mouths (southwest of Spain), are producing an unambiguous radioactive impact in their surrounding aquatic ...
Bolívar Raya, Juan Pedro, García-Tenorio García-Balmaseda, Rafael, Más Balbuena, José Luis, Vaca Galán, Federico   +3 more
core