Results 81 to 90 of about 25,046 (241)

Initial study of regolith exposure ages and burial conditions on Ryugu: Cosmogenic nuclides score in two touchdowns

Meteoritics &Planetary Science, Volume 61, Issue 4, Page 565-579, April 2026.
Abstract Surface processes on the asteroid Ryugu have been investigated using cosmic‐ray‐produced radionuclides, 10Be, 26Al, and 36Cl, and stable noble gases, on eight samples returned by the Hayabusa2 spacecraft. The 10Be and 26Al along with 21Ne measurements indicate that the two Chamber A samples A0105 collected during the first touchdown (TD) were ...
Kunihiko Nishiizumi, Keisuke Nagao, Marc W. Caffee, Ryuji Okazaki, Jozef Masarik, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Hiroshi Naraoka, Hikaru Yabuta, Kanako Sakamoto, Kasumi Yogata, Toru Yada, Shogo Tachibana, Sei‐ichiro Watanabe, Yuichi Tsuda, Masanao Abe, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Hirotaka Sawada, Satoshi Tanaka, Tomohiro Usui, Koji Wada, Hajime Yano, Makoto Yoshikawa, Hayabusa2 Initial Analysis Volatile Team   +30 more
wiley   +1 more source

A next-generation inverse-geometry spallation-driven ultracold neutron source

, 2019
The physics model of a next-generation spallation-driven high-current ultracold neutron (UCN) source capable of delivering an extracted UCN rate of around an-order-of-magnitude higher than the strongest proposed sources, and around three-orders-of ...
A. R. Young, A. Saunders, C. L. Morris, E. M. Lutz, Filges D., G. Muhrer, Golub R., K. K. H. Leung, Kaplan I., M. Makela, Pobell F., R. W. Pattie, T. Hügle, T. M. Ito, Turchin V. F.   +14 more
core   +1 more source

Irrigation Monitoring With Cosmic‐Ray Neutron Sensors: Unraveling Field Experiments With Neutron Transport Simulations

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Irrigation is essential for stabilizing yields and sustaining food production, yet it faces increasing challenges, especially in water‐scarce regions. Cosmic‐ray neutron sensors (CRNS) are a promising tool in irrigation management as they can continuously monitor soil water content (SWC) over large areas.
C. Brogi, F. Nieberding, L. Scheiffele, A. Daccache, M. Schrön, H. R. Bogena   +5 more
wiley   +1 more source

Tumor‐Associated Macrophages as Therapeutic Targets: Deciphering Interaction Networks and Advancing Clinical Translation

MedComm, Volume 7, Issue 2, February 2026.
Tumor‐associated macrophages are the most abundant immune cells in the tumor microenvironment, driving malignant progression and treatment resistance. This review summarizes the protumor mechanisms of TAMs (including phagocytosis modulation, metabolic reprogramming, exosomal communication, and immune interactions), evaluates three major strategies ...
Wurihan Bao, Xiaojie Qu, Yiqi Wang, Dan Huang, Huiling Zhang, Mingyuan Dong, Han Sun, Zhaogang Yang, Xuefeng Li   +8 more
wiley   +1 more source

Current status of MCNP6 as a simulation tool useful for space and accelerator applications

, 2012
For the past several years, a major effort has been undertaken at Los Alamos National Laboratory (LANL) to develop the transport code MCNP6, the latest LANL Monte-Carlo transport code representing a merger and improvement of MCNP5 and MCNPX. We emphasize
Bull, J. S., Hughes, H. G., Mashnik, S. G., Prael, R. E., Sierk, A. J.   +4 more
core   +1 more source

Experimental and computational dosimetry in an integrated workflow for remote audits in Ir‐192 interstitial brachytherapy: Development and pilot implementation

Journal of Applied Clinical Medical Physics, Volume 27, Issue 1, January 2026.
Abstract Purpose This work presents the development and pilot implementation of a comprehensive remote (postal) dosimetry audit for Ir‐192 High Dose Rate interstitial brachytherapy, integrating independent experimental and computational dosimetry procedures into a unified workflow. Methods A compact, water‐equivalent phantom was designed to accommodate
Eleftherios P Pappas, Vasiliki Peppa, Alexandra Drakopoulou, Eleni Velissariou, Zoi Thrapsanioti, Georgios Kollias, Efi Koutsouveli, Georgia Lymperopoulou, Pantelis Karaiskos   +8 more
wiley   +1 more source

Measurements of ultracold neutron upscattering and absorption in polyethylene and vanadium

, 2013
The study of neutron cross sections for elements used as efficient ``absorbers'' of ultracold neutrons (UCN) is crucial for many precision experiments in nuclear and particle physics, cosmology and gravity.
Adamek, Evan R., Bagdasarova, Yelena, Broussard, L. J., Cude-Woods, C. B., Fellers, Deon E, Geltenbort, Peter, Hasan, S. I., Hickerson, K. P., Hogan, G., Holley, A. T., Liu, Chen-Yu, Makela, M., Mendenhall, M. P., Morris, C. L., Ortiz, J., Pattie Jr., R. W., Phillips, D. G., Ramsey, J., Salvat, D. J., Saunders, A., Seestrom, S. J., Sharapov, E. I., Shaw, E., Sjue, Sky, Sondheim, W. E., VornDick, B., Wang, Z., Womack, T. L., Young, A. R., Zeck, B. A.   +29 more
core   +1 more source

Investigation of inter‐source and intra‐source spectral variations in an electronic brachytherapy source using spectral measurements and Monte Carlo simulations

Medical Physics, Volume 53, Issue 1, January 2026.
Abstract Background The Xoft electronic brachytherapy source is commonly used to treat superficial lesions and tumors located at shallow depths. However, uncertainties in material composition and geometry, mainly arising due to the manual assembly of the x‐ray tube components, contribute to inter‐source variability in the tube output spectrum.
Azin Esmaelbeigi, Nada Tomic, Jonathan Kalinowski, Peter G. F. Watson, Mark J. Rivard, Slobodan Devic, Shirin A. Enger   +6 more
wiley   +1 more source

Calculation and measurement of Al prompt capture gammas above water in a pool-type reactor

Nuclear Engineering and Technology, 2022
Prompt capture gammas are an important part of the fission reactor gamma field. Because some of the structural materials after neutron capture can emit photons with high energies forming the dominant component of the gamma spectrum in the high energy ...
Tomáš Czakoj, Michal Košťál, Evžen Losa, Zdeněk Matěj, Jan Šimon, Filip Mravec, František Cvachovec   +6 more
doaj   +1 more source

Potential MCNP Enhancements for NCT [PDF]

, 1993
MCNP,1 a Los Alamos National Laboratory Monte Carlo radiation transport code, is currently widely used in the medical community for a variety of purposes including treatment planning, diagnostics, beam design, tomographic studies, and radiation protection.
Estes, G. P., Taylor, W. M.
openaire   +1 more source