Results 81 to 90 of about 7,309 (190)

Temporal Pattern and Profile of a Coastal‐Deep Sea Conveyor at a Marginal Deep Oligotrophic Sea

Journal of Geophysical Research: Oceans, Volume 129, Issue 6, June 2024.
Abstract Sediment trap data set and 234Th profiles (deep water excesses and deficits) reveal that particulate organic carbon (POC) export at the highly oligotrophic Levantine Sea is dominated by lateral transport from the nearby margin. These intermediate nepheloid layers (INL) operate at multi‐depth, with the silt‐to‐clay size particulate matter (PM ...
Ronen Alkalay, Yishai Weinstein, Barak Herut, Tal Ozer, Olga Zlatkin, Tslil Bar, Ilana Berman‐Frank, Timor Katz   +7 more
wiley   +1 more source

Study on Preparation of Metal Bismuth Targets

Journal of Isotopes, 2021
High temperature chemical extract method can be used to separate 209Bi and 210Po in bismuth target after reactor irradiated. Two kinds of metal bismuth targets are designed. The MNCP program is used to simulate the neutron flux and nuclear heating in the
YANG Hongwei;XIANG Xueqin;HU Liansheng;MA Junping;LIU Lu
doaj  

Retrospective radon measurements based on implanted 210Po in glass objects using polycarbonate detectors [PDF]

Nuclear Technology and Radiation Protection, 2018
In the present investigation, a surface-deposited polonium was measured in 37 houses in Rasht and Ramsar cities of Iran with the aim of evaluating the retrospective radon concentration.
Azadbar Alireza, Sardari Dariush, Kardan Mohamadreza, Baradaran Samaneh   +3 more
doaj   +1 more source

Bremsstrahlung Spectrum in alpha Decay

, 1999
Using our previous approach to electromagnetic emission during tunneling, an explicit, essentially classical, formula describing the bremsstrahlung spectrum in alpha decay is derived. The role of tunneling motion in photon emission is discussed.
A. D’Arrigo, J. Kasagi, L. D. Landau, M. I. Dyakonov, M. I. Dyakonov, N. Takigawa, T. Papenbrock   +6 more
core   +1 more source

Characterization of a segmented printed circuit board (PCB) as a standard for absorbed dose to water from alpha‐emitting radionuclides

Medical Physics, Volume 51, Issue 5, Page 3665-3676, May 2024.
Abstract Background Our previous work introduced and evaluated a standard for surface absorbed dose rate per unit radioactivity to water from unsealed alpha‐emitting radionuclides used in targeted radionuclide therapy (TRT). An overall uncertainty over 4.0% at k = 1 was reported for the absorbed dose to air measurements, which was partially attributed ...
Ahtesham Ullah Khan, Jeff Radtke, Larry DeWerd   +2 more
wiley   +1 more source

Suppression of complete fusion due to breakup in the reactions $^{10,11}$B + $^{209}$Bi

, 2008
Above-barrier cross sections of $\alpha$-active heavy reaction products, as well as fission, were measured for the reactions of $^{10,11}$B with $^{209}$Bi.
Dasgupta, M., Gasques, L. R., Hinde, D. J., Mukherjee, A., Thomas, R. G.   +4 more
core   +1 more source

Estimation of thermodynamic and physicochemical properties of the alkali astatides: On the bond strength of molecular astatine (At2) and the hydration enthalpy of astatide (At−)

Journal of Mass Spectrometry, Volume 59, Issue 4, April 2024.
Abstract The recent accurate and precise determination of the electron affinity (EA) of the astatine atom At0 warrants a re‐investigation of the estimated thermodynamic properties of At0 and astatine containing molecules as this EA was found to be much lower (by 0.4 eV) than previous estimated values.
Peter C. Burgers, Lona Zeneyedpour, Theo M. Luider, John L. Holmes   +3 more
wiley   +1 more source

Estimation of 210Po and 210Pb and its doses to human beings due to consumption of freshwater species of Ponnusamuthiram Lake, South India

Radiation Protection and Environment
A systemic study on the natural radionuclides such as 210Po and 210Pb in the environmental matrices and biota of Ponnusamuthiram Lake (Kumarapalayam) has been undertaken to establish a baseline data on the radiation profile of Ponnusamuthiram Lake ...
Raju Krishnamoorthy, T. Perumal, N. Kannadasan, Mohamed Saiyad Musthafa   +3 more
doaj   +1 more source

A 2,000‐Year Record of Eelgrass (Zostera marina L.) Colonization Shows Substantial Gains in Blue Carbon Storage and Nutrient Retention

Global Biogeochemical Cycles, Volume 38, Issue 3, March 2024.
Abstract Assessing historical environmental conditions linked to habitat colonization is important for understanding long‐term resilience and improving conservation and restoration efforts. Such information is lacking for the seagrass Zostera marina, an important foundation species across cold‐temperate coastal areas of the Northern Hemisphere.
Martin Dahl, Martin Gullström, Irene Bernabeu, Oscar Serrano, Carmen Leiva‐Dueñas, Hans W. Linderholm, Maria E. Asplund, Mats Björk, Tinghai Ou, J. Robin Svensson, Elinor Andrén, Thomas Andrén, Sanne Bergman, Sara Braun, Anneli Eklöf, Zilvinas Ežerinskis, Andrius Garbaras, Petter Hällberg, Elin Löfgren, Malin E. Kylander, Pere Masqué, Justina Šapolaitė, Rienk Smittenberg, Miguel A. Mateo   +23 more
wiley   +1 more source

Lunar Outgassing, Transient Phenomena and The Return to The Moon, I: Existing Data

, 2007
Herein the transient lunar phenomena (TLP) report database is subjected to a discriminating statistical filter robust against sites of spurious reports, and produces a restricted sample that may be largely reliable.
Arlin P. S. Crotts, Arvidson R., Basilevsky A. T., Biggar G. M., Birt W. R., Bulow R. C., Burlingame A. L., Cameron W. S., Cameron W. S., Classen J., Criswell D. R., Criswell D. R., Crotts A. P. S., Ebel D. S., Elger T. G., Freeman J. W., Golub L., Haas W. H., Hanna J. C., Hodges R. R., Jr., Hodges R. R., Jr., Hodges R. R., Jr., Hodges R. R., Jr., Hoffman J. H., Konig B., McCubbin F. M., Middlehurst B., Nakamura Y., Nakamura Y., Pickering W. H., Runcorn S. K., Saal A. E., Sato M., Schultz P. H., Schultz P. H., Schultz P. H., Silver L. T., Strain P. L., Vondrak R. R., Whitford-Stark J. L., Whitley H. M., Wood R. W.   +41 more
core   +1 more source