Results 41 to 50 of about 401,787 (285)

Monte Carlo Simulation of Gamma and Neutron Shielding with High-performance Ultra-heavy Cement Composite

Journal of Medical Physics
Purpose: As the applications of nuclear technology increase in today’s world, radiation protection becomes even more important. Radiation protection is important in medical imaging applications and radiotherapy rooms. Therefore, in this research, we have
Mohammadreza Alipoor, Mahdi Eshghi, Ramazan Sever   +2 more
doaj   +1 more source

Shielding Design for the PGNAA Experimental Facility at Kartini Reactor

Atom Indonesia, 2018
Two steps of preliminary study had been conducted in conjunction with the design of a PGNAA experimental facility at Kartini reactor, i.e. beam characterization of the existing beam ports to select one going to be used and the collimator design at the ...
T. Sutondo, S Syarip
doaj   +1 more source

On the Aromaticity and ¹³C-NMR Pattern of Pentagonal-Pyramidal Hexamethylbenzene Dication [C₆(CH₃)₆]²⁺: A {C₅(CH₃)₅}⁻–{CCH₃}³⁺ Aggregate

Chemistry, 2021
The experimentally characterized hexamethylbenzene dication C6(CH3)62+ shows a pentagonal-pyramidal structure involving a carbon-capped five-membered ring.
Desmond MacLeod-Carey, Alvaro Muñoz-Castro   +1 more
doaj   +1 more source

Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells

FEBS Letters, EarlyView.
Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López, Özge Yilmaz Ardicli, Mübeccel Akdis   +2 more
wiley   +1 more source

Shielding Design Optimization of the Helium-Cooled Pebble Bed Breeding Blanket for the EU DEMO Fusion Reactor

Energies, 2022
The helium-cooled pebble bed (HCPB) breeding blanket (BB) is one of the two driver-blanket candidates for the European DEMO fusion reactor. Recent design activities were focused, among other objectives, on the achievement of an efficient shielding system
Iole Palermo, Francisco A. Hernández, Pavel Pereslavtsev, David Rapisarda, Guangming Zhou   +4 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Numerical solutions of the one-dimensional nucleon-meson cascade equations [PDF]

, 1964
Numerical integration of meson-nucleon cascade equations for accelerator shielding ...
Alsmiller, R. G., Jr., Barish, J., Murphy, J. E.   +2 more
core   +3 more sources

Monitoring of circulating tumor DNA allows early detection of disease relapse in patients with operable breast cancer

Molecular Oncology, EarlyView.
Monitoring circulating tumor DNA (ctDNA) in patients with operable breast cancer can reveal disease relapse earlier than radiology in a subset of patients. The failure to detect ctDNA in some patients with recurrent disease suggests that ctDNA could serve as a supplement to other monitoring approaches.
Kristin Løge Aanestad, Marie Austdal, Oddmund Nordgård, Gunnar Mellgren, Satu Oltedal, Marie L. Austbø, Ylva H. Vignes, Thomas Helland, Kristin Jonsdottir, Tone H. Lende, Emilius A. M. Janssen, Bjørnar Gilje, Kjersti Tjensvoll, PBCB study group, Gunnar Mellgren, Tone Hoel Lende, Anette Heie, Kristin Viste, Anita Røyneberg Alvheim, Emiel AM Janssen, Kristin Jonsdottir, Ann Cathrine Kroksveen, Thomas Helland, Einar Gudlaugsson, Oddmund Nordgård, Satu Oltedal, Kristin Løge Aanestad, Jan Terje Kvaløy, Kirsten Lode, Kari Britt Hagen, Marie Austdal, Ylva H. Vignes, Siri Tungland Sola, Nina Egeland Amundsen, Finn Magnus Eliassen, Emeritus Ernst A Lien   +35 more
wiley   +1 more source

Self-shielding effect of a single phase liquid xenon detector for direct dark matter search

, 2009
Liquid xenon is a suitable material for a dark matter search. For future large scale experiments, single phase detectors are attractive due to their simple configuration and scalability. However, in order to reduce backgrounds, they need to fully rely on
A. Minamino, A. Ota, A. Takeda, Abe, Ahmed, Alner, Aprile, Baldini, Baldini, Bernabei, C. Mitsuda, D. Motoki, Doke, Fukuda, H. Hagiwara, H. Ogawa, H. Sekiya, J. Hosaka, J.I. Lee, J.P. Cravens, Jungman, K. Abe, K. Ishihara, K. Kobayashi, K. Nishijima, K. Taki, K. Tomita, K. Ueshima, K.E. Lim, Lebedenko, M. Kikuchi, M. Nakahata, M. Shiozawa, M.B. Smy, N. Kobayashi, S. Kamada, S. Moriyama, S. Nakamura, S. Suzuki, S.H. Moon, Schmidt, Spergel, T. Maruyama, T. Nagase, T. Namba, T. Sato, Tegmark, Y. Ashie, Y. Ebizuka, Y. Fukuda, Y. Hashimoto, Y. Itow, Y. Koshio, Y. Nakajima, Y. Suzuki, Y. Takeuchi, Y. Uchida, Y.D. Kim   +57 more
core   +1 more source

Model for Cumulative Solar Heavy Ion Energy and Linear Energy Transfer Spectra [PDF]

, 2007
A probabilistic model of cumulative solar heavy ion energy and LET spectra is developed for spacecraft design applications. Spectra are given as a function of confidence level, mission time period during solar maximum and shielding thickness. It is shown
Barth, J. L., Jordan, T., Mewaldt, R. A., Stauffer, C., Xapsos, M. A.   +4 more
core   +1 more source