Results 61 to 70 of about 7,309 (190)

Particle Export Fluxes in the Southern Ocean: Importance of Nonheterotrophic Processes in POC Flux Attenuation

Journal of Geophysical Research: Oceans, Volume 130, Issue 7, July 2025.
Abstract The ocean contributes to regulating atmospheric CO2 levels via the biological carbon pump (BCP). One critical aspect of the BCP is the depth at which sinking particulate organic carbon (POC) remineralizes in the mesopelagic zone (200–1,000 m). In the Southern Ocean, the circulation is such that the products generated from POC remineralization ...
Frédéric A. C. Le Moigne, Katsiaryna Pabortsava, María Villa‐Alfageme, Nathan Briggs, Chelsey A. Baker, Heather A. Bouman, Chance J. English, Sabena Blackbird, Stephanie A. Henson, Hugh Venables, Craig A. Carlson, C. Mark Moore, Jack Williams, Adrian P. Martin   +13 more
wiley   +1 more source

Track Reconstruction and Performance of DRIFT Directional Dark Matter Detectors using Alpha Particles [PDF]

, 2007
First results are presented from an analysis of data from the DRIFT-IIa and DRIFT-IIb directional dark matter detectors at Boulby Mine in which alpha particle tracks were reconstructed and used to characterise detector performance--an important step ...
A. Petkov, A.StJ. Murphy, Alner, Alner, Bergstrom, Bigu, C. Ghag, Castleman, Chu, Copi, D. Loomba, D. Muna, D.P. Snowden-Ifft, E. Tziaferi, Frey, G.G. Nicklin, Goldstein, Hopke, J. Forbes, J. Turk, Leonard, Lightfoot, M. Gold, M. Robinson, Maiello, Mangiarotti, Maniyan, Martoff, McLaughlin, Morgan, N. Sanghi, N.J.C. Spooner, N.J.T. Smith, Nazaroff, Ohnuki, P. Majewski, Postendörfer, Press, S. Burgos, S.J.S. Plank, S.M. Paling, Sasse, Snowden-Ifft, Snowden-Ifft, Snowden-Ifft, Strydom, T.B. Lawson, T.J. Sumner, V.A. Kudryavtsev, Yoon   +49 more
core   +3 more sources

Excess 210Po in the coastal atmosphere

Tellus B, 2000
Many researchers have reported the widespread occurrence of excess 210 Po in the global atmosphere and suggested probable sources such as resuspension of top soils, stratospheric aerosols, sea spray of the surface micro-layer, volcanic emission, and bio-volatile 210Po species from the productive ocean.
KIM, GUEBUEM, HUSSAIN, NAJID, CHURCH, THOMAS M.   +2 more
openaire   +2 more sources

Nitrogen Processes Within Tropical Mangroves in Australia

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 4, April 2025.
Abstract Coastal wetlands have long been identified as ecosystems that can ameliorate N inputs into the ocean. The processes associated with N uptake, transformation, and losses are relatively well understood for temperate wetlands; however, information on tropical wetlands is scarce.
M. F. Adame, N. Iram, J. N. Gamboa‐Cutz, P. Masque   +3 more
wiley   +1 more source

Bioacumulació de 210Po a nivell subcel·lular

, 2012
S’ha analitzat la concentració de 210Po en les fraccions subcel·lulars en òrgans digestius per diferents espècies de peixos. S’ha determinat que al voltant d'un 50% del 210Po es concentra en la fracció de citoplasma. La fracció de citoplasma es va separar en diferents especiacions químiques on es va determinar que la fracció de proteïna era la més ...
López Boix, Marina, García Orellana, Jordi, Universitat Autònoma de Barcelona. Facultat de Ciències   +2 more
openaire   +3 more sources

Activity Levels of Polonium-210 in Tobacco and Cigarette in Iran [PDF]

مجله علوم و فنون هسته‌ای, 2011
Polonium-210 (210Po) is a natural contaminant of tobacco and its products. Due to its volatility and inherent adsorption properties, 210Po is one of the major potential sources of human exposure through smoking.
B Ghanbar Moghaddam, M Vahabi Moghaddam, A.A Fathi Vand   +2 more
doaj  

Nuclear data uncertainty analysis for the Po-210 production in MYRRHA

EPJ Nuclear Sciences & Technologies, 2018
MYRRHA is a multi-purpose research reactor able to operate in sub-critical and critical modes and currently in the design phase at SCK•CEN. The choice of LBE was driven by its chemical stability, low melting temperature, high boiling point, low chemical ...
Fiorito Luca, Stankovskiy Alexey, Hernandez-Solis Augusto, Van den Eynde Gert, Žerovnik Gasper   +4 more
doaj   +1 more source

A record of monsoon rainforest variability from the Kimberley region in northwestern Australia

Journal of Quaternary Science, Volume 40, Issue 2, Page 243-256, February 2025.
ABSTRACT Northern Australia experiences extreme seasonality via the Indo‐Australian summer monsoon, with high inter‐annual variability in hydroclimate. Understanding the influence of hydrological variability on the landscape through the period of human occupation provides important environmental context to support the interpretation of the rich ...
Rachel C. Rudd, Teresa Dixon, John Nikolaus Callow, Patricia S. Gadd, Sabika Maizma, Geraldine Jacobsen, Patrick Moss, Hamish McGowan   +7 more
wiley   +1 more source

²¹⁰Po and ²¹⁰Pb content in the certain types of foodstuffs. Optimization of the analytical method

Радиационная гигиена, 2020
An article contents the review of the data on the content of polonium and lead content: 210Po, 210Pb in natural entities, obtained from literary sources.
M. V. Kaduka, L. N. Basalaeva, T. A. Bekyasheva, S. A. Ivanov, N. V. Salazkina, V. V. Stupina, A. N. Kaduka   +6 more
doaj   +1 more source

Bremsstrahlung radiation by a tunneling particle

, 1998
We study the bremsstrahlung radiation of a tunneling charged particle in a time-dependent picture. In particular, we treat the case of bremsstrahlung during alpha-decay, which has been suggested as a promissing tool to investigate the problem of ...
A. Sakharuk, A.A. Sakharuk, A.O. Caldeira, C. A. Bertulani, D. T. de Paula, E.H. Hauge, J. Kasagi, J.D. Jackson, L.D. Landau, M.G. Fuda, M.I. Dyakonov, N. Takigawa, O. Serot, S. Koonin, S.A. Gurvwitz, T. Papenbrock, V. G. Zelevinsky, W. Pauli   +17 more
core   +1 more source