Frequency-Dependent Attenuation Analysis of Ground-Penetrating Radar Data [PDF]
, 2006 In the early 1990s, it was established empirically that, in many materials, ground-penetrating radar (GPR) attenuation is approximately linear with frequency over the bandwidth of a typical pulse.
Debye P. J. +4 more
core +2 more sources
Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducers [PDF]
, 2007 The large number of degrees of freedom in the design of piezoelectric transducers requires a theoretical model that is computationally efficient so that a large number of iterations can be performed in the design optimisation.
Hayward, G. +5 more
core +1 more source
Tikrit Journal of Pure Science, 2023 A gamma–gamma fast –slow coincidence spectrometer composed of two 3"×3"NaI(Tl) detectors and peripheral electronics is used in investigating some effects on the photo peak after the penetration of gamma –rays from lead.
Mahmoud A. Elawi +2 more
doaj +1 more source
Effects of integration time on in-water radiometric profiles [PDF]
, 2018 This work investigates the effects of integration time on in-water downward irradiance E-d, upward irradiance E-u and upwelling radiance L-u profile data acquired with free-fall hyperspectral systems.
Antoine +50 more
core +1 more source
Calculated-Experimental Model for Multilayer Shield
ARO-The Scientific Journal of Koya University, 2016 The effective linear attenuation coefficients and build-up factors for single shield of Al, Fe, Pb, and for multi-layer shield of Al-Pb, Al-Fe, Fe-Pb, Al-Fe-Pb as a function of shield thickness, atomic number, and order of the materials composing the ...
Maan S. Al-Arif, Diyaree O. Kakil
doaj +1 more source
Effects of shock-induced cracks on the ultrasonic velocity and attenuation in granite [PDF]
, 2007 Measurements of the compressional wave velocity and the attenuation coefficients of 1-cm cubes were conducted. Samples were taken at various radii and depths beneath a 20 × 20 × 15 cm San Marcos granite block, impacted by a lead bullet at a velocity of ...
Ahrens, Thomas J., Ai, Huirong A.
core +1 more source
Experimental study on borotellurite glasses unveiling the radiation attenuation effects of BaO and Er2O3 [PDF]
Nuclear Technology and Radiation ProtectionThis work focuses on the preparation of borotellurite glasses doped with BaO, Bi2O3, and Er2O3, and the investigation of their radiation attenuation parameters.
Elsafi Mohamed +2 more
doaj +1 more source
Context sensitive cardiac x-ray imaging: a machine vision approach to x-ray dose control [PDF]
, 2015 Modern cardiac x-ray imaging systems regulate their radiation output based on the thickness of the patient to maintain an acceptable signal at the input of the x-ray detector.
Amber J. Gislason-Lee +6 more
core +2 more sources
Fabrication of Active Polymer Optical Fibers by Solution Doping and Their Characterization [PDF]
, 2018 This paper employs the solution-doping technique for the fabrication of active polymer optical fibers (POFs), in which the dopant molecules are directly incorporated into the core of non-doped uncladded fibers. Firstly, we characterize the insertion of a
Arrospide Zabala, Eneko +6 more
core +2 more sources
Monte Carlo calculation of shielding properties of newly developed heavy concretes for megavoltage photon beam spectra used in radiation therapy [PDF]
Iranian Journal of Medical Physics, 2016 Introduction: Globally, the need for radiotherapy as a part of cancer management increases every year. Thus, the shielding for megavoltage radiotherapy rooms is of great importance. Materials and Methods: In the present study, 14 types of developed high-
Rezvan Khaldari +2 more
doaj +1 more source