Results 1 to 10 of about 179,429 (219)
Comparison of Two DXA Systems, Hologic Horizon W and GE Lunar Prodigy, for Assessing Body Composition in Healthy Korean Adults [PDF]
Endocrinology and Metabolism, 2021 Background Dual-energy X-ray absorptiometry (DXA) is the most widely used method for evaluating muscle masses. The aim of this study was to investigate the agreement between muscle mass values assessed by two different DXA systems.
Seung Shin Park +3 more
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Electron hole capture centers in an irradiated K2SO4-Cu crystal
Eurasian Journal of Physics and Functional Materials, 2021 The methods of vacuum ultraviolet and thermal activation spectroscopy were used to measure the excitation spectra of impurity radiation in the fundamental absorption band of K2SO4-Cu crystals at 15 K and 300 K.
T. N. Nurakhmetov +8 more
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Photonics, 2023 Time-correlated single-photon counting (TCSPC) is a powerful technique for time-resolved measurement of fast and weak light signals used in a variety of scientific fields, including biology, medicine, and quantum cryptography.
Andrea Giudici +3 more
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Frontiers in Physics, 2021 In this work, we postulate that Schwinger’s threshold for a dynamic electric field intensity to induce spatial nonlinearity is a special case and, more generally, it is the threshold field for both static and dynamic electric fields.
Dale M. Grimes, Craig A. Grimes
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Photon albedo coefficients as functions of μ/Zeff parameter [PDF]
Nuclear Technology and Radiation Protection, 2013 This paper presents the results of the analyses of photon reflection from planar targets for normal photon incidence and for different shielding materials (water, concrete, aluminum, iron, and copper), in the range of the initial photon energies from ...
Ljubenov Vladan L., Simović Rodoljub D.
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A semiclassical approach reproducing asymptotically the Heitler formula for atomic photoionization
Учёные записки Казанского университета: Серия Физико-математические науки, 2020 The wave-corpuscle method for description of atomic photoionization by a flux of photons in the visible and X-ray range was developed and applied. Using the calculated photoionization probability in the asymptotics, we obtained the desired approximate ...
A.M. Shaimardanov +2 more
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Studies on neutron and photon kerma parameters for human body organs [PDF]
Nuclear Technology and Radiation Protection, 2016 A study on neutron kerma factors and photon air-kerma for human organs is presented for neutron energy range 2.53×10-8 MeV to 29 MeV and photon energy range 1 keV to 20 MeV.
Singh Vishvanath P. +2 more
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Dark matter and dark energy denote the gravitation of the expanding universe
Frontiers in Physics, 2022 We reason that it is the gravitation of all ordinary matter, extending from the dense distant past to the sparse present, rather than dark matter, that shows up in galaxy rotation and velocity dispersion.
Arto Annila, Mårten Wikström
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On the question of the radius of elementary particles [PDF]
E3S Web of Conferences, 2023 This article belongs to the field of theoretical physics, specifically the study of elementary particles. We discuss the parameters of elementary particles, their interactions with gravitational potential and magnetic fields, stability with respect to ...
Safonova Nina
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Photon-Assisted Transport Through a Quantum Dot Side-Coupled to Majorana Bound States
Frontiers in Physics, 2020 Transmission function of a system composing of a quantum dot (QD) subjected to a photon field and side-coupled to a topological superconductor nanowire hosting a pair of Majorana bound states (MBSs) is calculated by using the non-equilibrium Green's ...
Feng Chi +8 more
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