Results 51 to 60 of about 2,000,871 (360)

Digital radiography image quality evaluation using various phantoms and software

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed according to the instructions given in the IAEA Human Health Series No.
Ioannis A. Tsalafoutas, Shady AlKhazzam, Virginia Tsapaki, Huda AlNaemi, Mohammed Hassan Kharita   +4 more
wiley   +1 more source

Energy bands of atomic monolayers of various materials: Possibility of energy gap engineering

, 2010
The mobility of graphene is very high because the quantum Hall effects can be observed even at room temperature. Graphene has the potential of the material for novel devices because of this high mobility.
Guzmán-Verri, Klintenberg, Latil, Lebègue, Miyake, Nagashima, Nagashima, Novoselov, Novoselov, Tatsuo Suzuki, Trevisanutto, Yang, Yushi Yokomizo   +12 more
core   +1 more source

Evaluation of patient doses for routine digital radiography procedures toward establishing an institutional diagnostic reference levels: A case study in Sri Lanka

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract The present study was conducted as part of a comprehensive work to establish National Diagnostic Reference Levels (NDRLs) in Sri Lanka for the first time. DRLs can be used as an effective optimization tool for identifying unusually high or low patient doses during X‐ray examinations.
Sachith Welarathna, Sivakumar Velautham, Mihira Wanninayake, Sivananthan Sarasanandarajah   +3 more
wiley   +1 more source

A Storage Ring for Neutral Atoms [PDF]

Phys.Rev.Lett. 87 (2001) 270401, 2001
We have demonstrated a storage ring for ultra-cold neutral atoms. Atoms with mean velocities of 1 m/s corresponding to kinetic energies of ~100 neV are confined to a 2 cm diameter ring by magnetic forces produced by two current-carrying wires. Up to 10^6 atoms are loaded at a time in the ring, and 7 revolutions are clearly observed.
arxiv   +1 more source

A brief investigation of the dose field virtual simulation tools for reactor decommissioning and preliminary design for the HWRR reactor in China [PDF]

Nuclear Energy and Technology
The calculation and visualization of the dose field in the decommissioning of nuclear facilities is one of the important functions of the decommissioning virtual simulation system.
Yaping Guo, Peng Nie, Ruizhi Li, Lijun Zhang, Xingwang Zhang, Ren Ren, Zelong Zhao   +6 more
doaj   +3 more sources

Neutrino scattering on atomic electrons in searches for neutrino magnetic moment

, 2010
The scattering of a neutrino on atomic electrons is considered in the situation where the energy transferred to the electrons is comparable to the characteristic atomic energies, as relevant to the current experimental search for neutrino magnetic moment.
L. D. Landau, M. B. Voloshin, V. B. Berestetskii   +2 more
core   +1 more source

Low energy atomic collision with dipole interactions [PDF]

, 2001
We apply quantum defect theory to study low energy ground state atomic collisions including aligned dipole interactions such as those induced by an electric field.
A. J. Moerdijk, B. Deb, B. Gao, B. Gao, B. Gao, C. C. Bradley, C. C. Bradley, C. Cohen-Tannoudji, C. Greene, C. H. Greene, E. Tiesinga, E. Tiesinga, J. L. Bohn, J. M. Vogels, K. B. Davis, K. Huang, L. You, L. You, M. Anderson, M. J. Cavagnero, M. J. Seaton, M. Marinescu, M. Marinescu, P. O. Fedichev, S. Chu, T. Y. Wu, U. Fano, U. Fano, W. D. Philips   +28 more
core   +2 more sources

Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley   +1 more source

The effect of Fe atoms on the adsorption of a W atom on W(100) surface [PDF]

, 2007
We report a first-principles calculation that models the effect of iron (Fe) atoms on the adsorption of a tungsten (W) atom on W(100) surfaces. The adsorption of a W atom on a clean W(100) surface is compared with that of a W atom on a W(100) surface covered with a monolayer of Fe atoms. The total energy of the system is computed as the function of the
arxiv   +1 more source

Generation of Ammonium Ions Products From Reaction Between Dimethylhydroxylamine and Metal Ions

He huaxue yu fangshe huaxue, 2022
The ammonium ions produced by the reactions of relatively excessive dimethylhydroxylamine(DMHAN) with Fe3+, Ce4+ and Pu4+ in dilute nitric acid solutions at room temperature were determined by ion chromatographic method.
LI Chuan-bo, WANG Bo, LOU Fu-yan, CHEN Hui, YANG Shu-ming, LI Xiang   +5 more
doaj   +1 more source