Results 31 to 40 of about 184,645 (294)

An investigation on gamma attenuation of soil and oil-soil samples

Journal of Radiation Research and Applied Sciences, 2017
In this work, the gamma mass attenuation coefficient is investigated experimentally and theoretically for soil and oil-soil samples have been collected from different locations of Kirkuk city of Iraq.
Ali H. Taqi, Hero J. Khalil
doaj   +1 more source

Photon interaction coefficients for the colorectal cancer tissue

Journal of Medical Physics, 2022
Purpose: The application of radiotherapy to the treatment of cancer requires the knowledge of photon interaction coefficients such as mass attenuation (μm) and mass energy-absorption coefficients (μen/ρ).
Emmanuel Okon Esien-Umo, Joseph Abebe Obu, Ndubuisi Ozoemena Chiaghanam, Theophilus Ipeh Ugbem, Nneoyi Onen Egbe   +4 more
doaj   +1 more source

Comparison between MCNP5, Geant4 and experimental data for gamma rays attenuation of PbO–BaO–B2O3 glasses

Heliyon, 2019
Monte Carlo simulations, MCNP5 and Geant4 codes were developed to investigate radiation shielding properties of xPbO–(50-x) BaO–50B2O3 (where 5 ≤ x ≤ 45 mol%) consider to be glass systems.
M. Almatari, Shams A.M. Issa, M.G. Dong, M.I. Sayyed, R. Ayad   +4 more
doaj   +1 more source

Universal response of optimal granular damping devices [PDF]

, 2012
Granular damping devices constitute an emerging technology for the attenuation of vibrations based on the dissipative nature of particle collisions. We show that the performance of such devices is independent of the material properties of the particles ...
Bai, Bannerman, Brilliantov, Chen, Chung, Duan, Duncan, Friend, Gustavo Rosenthal, Kadanoff, Lieber, Liu, Lu, Luis A. Pugnaloni, Marhadi, Martín Sánchez, McNamara, Panossian, Papalou, Pöschel, Saeki, Salueña, Schäfer, Sánchez, Sánchez, Velichkovich, Xia   +26 more
core   +2 more sources

Evaluation of radioprotection properties of some selected ceramic samples

Results in Physics, 2018
In this study, the gamma radiation attenuation features of barium zirconat, barium titanate (IV), magnesium nitride, barium pyrophosphate and silicon carbide were studied using the narrow beam geometrical setup in the energy range of 81 keV–1333 keV. The
M.I. Sayyed, F. Akman, A. Kumar, M.R. Kaçal   +3 more
doaj   +1 more source

Evaluation of the Effect of Different Nanoparticles on the Mass Attenuation Coefficient of a Shield in Diagnostic Radiology: A Monte Carlo Study

Frontiers in Biomedical Technologies, 2023
Purpose: This research aimed to estimate the Mass Attenuation Coefficient (MAC) for the various nanoparticles in diagnostic imaging in order to assess and compare the changes in a bulk state.
Hossein Khosravi, Karim Ghazikhanlusani, Salman Jafari, Safora Nikzad   +3 more
doaj   +1 more source

Experimental Study on The Gamma Ray Absorption Properties of Lanthanum and Cerium Borides

Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2023
The objective of this study is to investigate the mass attenuation coefficients (μm) of lanthanumhexaborides and ceriumhexaborides over a wide photon energy range emitted from the main radioactive sources used in medicine and industry. 125I, 99mTc, 131I,
Esra Kurt, Mecit Aksu, Nureddin Türkan, Aynur Özcan, Hasan Gülbiçim   +4 more
doaj   +1 more source

The shape of the extragalactic cosmic ray spectrum from Galaxy Clusters [PDF]

, 2016
We study the diffusive escape of cosmic rays from a central source inside a galaxy cluster to obtain the suppression in the outgoing flux appearing when the confinement times get comparable or larger than the age of the sources.
Harari, Diego, Mollerach, Silvia, Roulet, Esteban   +2 more
core   +2 more sources

The impact of chemical modifications on gamma-ray attenuation properties of some WO3-reinforced tellurite glasses

Open Chemistry, 2023
We report the role of the chemical modifications on various gamma-ray attenuation properties of four different tellurite glasses reinforced through WO3.
ALMisned Ghada, Rabaa Elaf, Sen Baykal Duygu, Ilik Erkan, Kilic Gokhan, Zakaly Hesham M. H., Ene Antoaneta, Tekin Huseyin Ozan   +7 more
doaj   +1 more source

Sound Propagation in Gas-Vapor-Droplet Suspensions with Evaporation and Nonlinear Particle Relaxation [PDF]

, 2012
The Sound attenuation and dispersion in saturated gas-vapor-droplet mixture in the presence of evaporation has been investigated theoretically. The theory is based on an extension of the work of Davidson to accommodate the effects of nonlinear particle ...
Kandula, Max
core   +1 more source