Results 41 to 50 of about 621 (137)

Image quality and dosimetry of a dual source computed tomography scanner with special emphasis on radiation dose of lung in a chest examination

, 2011
The purpose of the current study was to evaluate the Dual Source Computed Tomography scanner in terms of Image quality and dosimetry with special emphasis of radiation dose of lung in a Chest examination.Zielsetzung der Studie war die Evaluation eines ...
Paul, Jijo
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First Structured Uranium‐Based Monoliths Produced via Vat Photopolymerization for Nuclear Applications

Advanced Functional Materials, Volume 34, Issue 46, November 12, 2024.
A photocurable sol‐based formulation is developed to fabricate uranium dicarbide‐carbon 3D structures via digital light processing. The unique photochemistry of uranyl nitrate allows to directly pattern U‐based materials in a photopolymer platform, enabling to create complex‐shaped architectures.
Alice Zanini, Pedro Amador Celdran, Olaf Walter, Sara Maria Carturan, Jacobus Boshoven, Antonio Bulgheroni, Lisa Biasetto, Mattia Manzolaro, Rachel Eloirdi, Stefano Corradetti, Giorgia Franchin   +10 more
wiley   +1 more source

Constraints on the impact history of the Apollo 16 landing site: Implications of soil‐like breccia noble gas records

Meteoritics &Planetary Science, Volume 59, Issue 11, Page 2883-2921, November 2024.
Abstract The Apollo 16 regolith breccia sample suite provides a record of lunar regolith formation from the basin‐forming epoch (~3.9 Ga) through to a time of declining impactor flux (~2 Ga). These rocks have been characterized into three groups: the “ancient,” “young,” and “soil‐like” regolith breccias on the basis of their petrographic ...
M. C. Nottingham, N. M. Curran, J. Pernet‐Fisher, R. Burgess, I. A. Crawford, J. D. Gilmour, R. Tartèse, K. H. Joy   +7 more
wiley   +1 more source

Optical imaging for brown or beige adipose tissue

VIEW, Volume 5, Issue 5, October 2024.
This overview summarizes optical imaging techniques for detecting brown or beige fat. The techniques include bioluminescence imaging, fluorescence imaging, photoacoustic imaging, optical diffraction tomography, Cerenkov luminescence imaging, and multimodal imaging. Their principles, characteristics, and recent research advances are highlighted to guide
Jiamin Liu, Linjie Ni, Minmin Peng, Yiying Liang, Chan Lu, Hanying Zheng, Zicheng Huang, Jinde Zhang, Ronghe Chen   +8 more
wiley   +1 more source

Radiopurity assessment of the energy readout for the NEXT double beta decay experiment [PDF]

, 2017
[EN] The "Neutrino Experiment with a Xenon Time-Projection Chamber" (NEXT) experiment intends to investigate the neutrinoless double beta decay of 136Xe, and therefore requires a severe suppression of potential backgrounds.
V. Álvarez, C. Sofka, J. Renner, P. Lebrun, F. Monrabal, Mora Mas, Francisco José, Azevedo, C. D. R., J.J. Gómez-Cadenas, Cebrian, S., Carcel, S., J. Pérez, J. Muñoz Vidal, Toledo Alarcón, José Francisco, Botas, A., R. Felkai, J.M.F. dos Santos, C.D.R. Azevedo, A. Simón, N. López-March, D.R. Nygren, J.M. Benlloch-Rodríguez, R. Webb, Benlloch-Rodriguez, J. M., A. Martínez, J.F.C.A. Veloso, A.I. Hernandez, J. Hauptman, M. Querol, Diaz, J., C.A.O. Henriques, S. Cebrián, M. Musti, J. Rodríguez, Bandac, I., Escada, J., V. Herrero, B.J.P. Jones, L. Rogers, Rodriguez-Samaniego, Javier, E.D.C. Freitas, J.A. Hernando Morata, A.L. Ferreira, M. Losada, Diesburg, M., A. Botas, Z. Tsamalaidze, J.T. White, J. Martín-Albo, N. Yahlali, M. Diesburg, T. Stiegler, R. Esteve, S. Cárcel, A. Goldschmidt, G. Martínez-Lema, M. Sorel, L. Labarga, L.M. Moutinho, R.M. Gutiérrez, I. Liubarsky, J.F. Toledo, Conde, C. A. N., A. Laing, I. Bandac, A.D. McDonald, F.I.G.M. Borges, M. Nebot-Guinot, Esteve Bosch, Raul, J. Escada, P. Ferrario, F.J. Mora, D. González-Díaz, J. Torrent, Carrión, J.V., P. Novella, B. Palmeiro, L. Ripoll, Perez, J., Herrero Bosch, Vicente, J. Díaz, A. Para, J.V. Carrión, L.M.P. Fernandes, Álvarez-Puerta, Vicente, J.A. Villar, Borges, F. I. G. M., C.M.B. Monteiro, Querol-Segura, Marc, C.A.N. Conde, F.P. Santos, Labarga, L.   +90 more
core   +1 more source

ATTENUATION COEFFICIENTS OF GASES FOR 4.5 TO 145 keV PHOTONS

, 1971
Nous avons mesuré des coefficients d'absorption massique pour l'air, l'hydrogène, l'hélium, le néon, l'argon, le krypton et le xénon. Des photons d'énergie 4,508-5,895-9,243-27,380- 44,229-88,09 et 145,43 keV ont été obtenus à l'aide de sources à ...
J. H. McCRARY
core   +1 more source

Transport of nobel gases under pressure in geological materials

, 2021
This report intends to elucidate the ways in which noble gases transport through geological materials, and how pressure plays a role in this process. The role of sand is explored, and future experiments with salt are discussed.
Lumpkin, Samantha Katharine
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Use of a cryogenic sampler to measure radioactive gas concentrations in the main off-gas system at a high-flux isotope reactor [PDF]

, 1982
A method for measuring gamma-emitting radioactive gases in air has been developed at Oak Ridge National Laboratory (ORNL). This method combines a cryogenic air-sample collector with a high-purity germanium (HPGe) gamma spectroscopy system.
Gibson, M. O., Kark, J. B., Perdue, P. T., Berven, B. A.   +3 more
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Development of A Cascade Adsorption Process For Rapid Xenon Concentration From Air For Nuclear Proliferation Monitoring

, 2010
Despite the fact that most fission products remain underground after a nuclear detonation a significant fraction of radioisotopes consisting of noble gases inevitably escape into the atmosphere and can be used to ascertain the occurrence of such ...
Yang, Dongxiang
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Lawrence Livermore Laboratory Report 153

, 1954
From abstract: Buildup of gaseous radioisotopes which are expected to be found in the atmosphere above a solution-fueled reactor has been calculated as a function of operating time. Krypton, iodine, xenon, and bromine have been considered. Direct fission
Donaldson, J. R.
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