Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Donepudi Venkateswara Rao"'
Autor:
Tetsuya Yuasa, Takao Akatsuka, Zhong Zhong, Donepudi Venkateswara Rao, Giovanni Gigante, Tohoru Takeda, Roberto Cesareo, Antonio Brunetti, Medasani Swapna
Publikováno v:
Applied Radiation and Isotopes. 68:1687-1693
Images of terrestrial and marine invertebrates (snails and bivalves) have been obtained by using an X-ray phase-contrast imaging technique, namely, synchrotron-based diffraction-enhanced imaging. Synchrotron X-rays of 20, 30 and 40 keV were used, whi
Autor:
Tetsuya Yuasa, Donepudi Venkateswara Rao, Medasani Swapna, T. Akatsuka, Tohoru Takeda, Antonio Brunetti, Roberto Cesareo, Giovanni Gigante
Publikováno v:
Journal of X-Ray Science and Technology. 18:327-337
Synchrotron-based scattered radiation form low-contrast phantom materials prepared from polyethylene, polystyrene, nylon, and Plexiglas is used as test objects in X-ray CT was examined with 8, 10 and 12 keV X-rays. These phantom materials of medical
Autor:
Antonio Brunetti, Roberto Cesareo, Giuliana Tromba, Tohoru Takeda, Tetsuya Yuasa, Donepudi Venkateswara Rao, Giovanni Gigante, Medasani Swapna, Takao Akatsuka
Publikováno v:
Journal of Trace Elements in Medicine and Biology. 23:251-257
In this study, synchrotron-based micro-beam was utilized for elemental mapping of a small animal shell. A thin X-ray spot of the order of approximately 10microm was focused on the sample. With this spatial resolution and high flux throughput, the X-r
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 267:2890-2896
When a multilayered material is analyzed by means of energy-dispersive X-ray fluorescence analysis, then the X-ray ratios of Kα / Kβ , or Lα / Lβ and Lα / Lγ , for an element in the multilayered material, depend on the composition and thickness
Autor:
Antonio Brunetti, Yuji Itai, Takao Akatsuka, G. E. Gigante, Tohoru Takeda, Donepudi Venkateswara Rao, R. Cesareo
Publikováno v:
Journal of Physical and Chemical Reference Data. 33:627-712
Relativistic and nonrelativistic Compton profile cross sections for H, C, N, O, P, and Ca and for a few important biological materials such as water, polyethylene, lucite, polystyrene, nylon, polycarbonate, bakelite, fat, bone and calcium hydroxyapat
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 526:584-592
The Compton profile is a correction of the Klein–Nishina cross-section for the motion of the electrons. This correction modifies the shape of the Compton peak in the spectrum of the scattered photons and it depends on the atomic wave functions of t
Autor:
Tohoru Takeda, Antonio Brunetti, Roberto Cesareo, Donepudi Venkateswara Rao, Giovanni Gigante, Takao Akatsuka, Yuji Itai
Publikováno v:
NDT & E International. 35:573-580
Computed tomographic images of soft materials are obtained using differential attenuation and transmission method with a tube source of X-rays, for samples like walnut, brew tooth and peaches in order to know the interior properties of the material a
Autor:
Stephen M. Seltzer, Donepudi Venkateswara Rao, Antonio Brunetti, Roberto Cesareo, Bruno Golosio, Salvator Roberto Amendolia
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 465:577-583
Images of soft materials are obtained using image intensifier based X-ray system (Rao et al., Nucl. Instr. and Meth. A 437 (1999) 141). The interior of the soft material is visualized using the novel software in order to know the distribution of atte
Publikováno v:
NDT & E International. 33:523-530
An image intensifier based computed tomography scanner and a tube source of X-rays are used for nondestructive evaluation, imaging of small objects for archaeological studies and conservation of works of art and micro analysis of soft materials. It c
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 437:141-151
Computed tomographic images, nondestructive evaluation of materials of ceramics, electrical insulators, wood and other samples obtained, using a new tomographic system based on an image intensifier replacing earlier system (Cesareo et al., Nucl. Inst