Results 181 to 190 of about 18,856 (260)

Direct Detection of Hydrogen Reveals a New Macroscopic Crustal Water Reservoir on Early Mars

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The next great leap in Martian exploration is the return of samples to Earth. Maximizing their scientific value requires non‐destructive analytical techniques for early three‐dimensional characterization. Neutron computed tomography (CT), highly sensitive to hydrogen, complements conventional X‐ray CT and enables the detection of hydrous ...
Estrid Buhl Naver, Katrine Wulff Nikolajsen, Martin Sæbye Carøe, Domenico Battaglia, Jens Frydenvang, Martin Bizzarro, Jakob Sauer Jørgensen, Kim Lefmann, Anders Kaestner, David Christian Mannes, Phil Cook, Henrik Birkedal, Thorbjørn Erik Køppen Christensen, Innokenty Kantor, Henning Friis Poulsen, Luise Theil Kuhn   +15 more
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, Volume 28, Issue 15, 5 August 2026.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Deviations from the inverse relationship between tumor and normal tissue dose and RBE in fast neutron data are compatible with the presence of hypoxia, with possible applications to hypo-fractionated proton therapy. [PDF]

Front Oncol
Jones B.
europepmc   +1 more source

100 Years of Element Zero: Andreas von Antropoff's Neutronium and the Naming of the Neutron

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 12, 3 August 2026.
Congratulations to the 100th Anniversary of the publication of Andreas von Antropoff's element 0, “–“! This contribution provides a historical account of the concept of element zero and the naming of the neutron. The concept of element zero is 100 years old, having a first documented appearance in a 1926 publication by Andreas von Antropoff, while the ...
Holger Kohlmann
wiley   +1 more source

Monte Carlo simulation and unfolding of an extended Bonner sphere system for secondary neutron spectrometry in proton therapy facilities using conventional BSS experimental data. [PDF]

Front Oncol
Díaz-Comeche A, Oliver S, Juste B, Jardin D, Zakhary M, Mossahebi S, Mille MM, Lee C, Miró R, Verdú G, Morató S.   +10 more
europepmc   +1 more source

Monte carlo assessment of advanced shielding materials for space‐efficient radiotherapy vault design

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Conventional radiotherapy vault shielding typically employs 2 to 3 meters of ordinary concrete, consistent with NCRP Report 151 reference data. While NCRP 151 specifies dose‐based design goals rather than mandating particular materials, the practical default of concrete results in vault footprints of 150 to 200 m2 per linac, which ...
Beechui Koo, Richard Xu, Morgan Glennie, Jungwook Shin, Karl Farrey, Siyong Kim, James J. Sohn   +6 more
wiley   +1 more source

Novel Integrated Technology of Pixelized Inorganic Scintillator Wafers for X-Rays and Neutron Detection. [PDF]

Molecules
Sokolov PS, Ermakova LV, Bondarau AG, Karpyuk PV, Smyslova VG, Sergeev AM, Komendo IY, Mechinsky VA, Borisevich EA, Popov AV, Sosnov DV, Korzhik MV.   +11 more
europepmc   +1 more source

Systematic review of physical and dosimetric criteria for managing CIEDs in radiotherapy: A medical physicist's perspective

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Aim Current radiotherapy (RT) guidelines for Cardiac Implantable Electronic Devices (CIEDs) are largely based on clinical management strategies and retrospective reports. This systematic review adopts a medical physics perspective to provide a critical, quantitative analysis of the technical evidence required for developing robust safety ...
Tiziana Malatesta, Agnese Barbareschi, Rita Alaimo, Emilio Mezzenga, Maria Grazia Brambilla, Anna Delana, Stefano Andreoli, Rita Consorti, Stefano Ren Kaiser, Marco Mapelli, Eugenia Moretti, Maria Mormile, Giulia Rambaldi Guidasci, Mara Severgnini, Lidia Strigari, Maria Daniela Falco   +15 more
wiley   +1 more source

Integrating measurement and simulation for evaluation of patient-specific whole-body dosimetry in clinical BNCT. [PDF]

Med Phys
Kakino R, Hu N, Sasaki A, Nojiri M, Yoshino Y, Takeno S, Aihara T, Matsubayashi N, Takata T, Tanaka H, Nihei K, Ono K.   +11 more
europepmc   +1 more source

Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing

Advanced Science, Volume 13, Issue 45, 13 August 2026.
Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang, Steve Gaudez, Mario Togni, Steven Van Petegem, Markus Bambach, Mamzi Afrasiabi   +5 more
wiley   +1 more source