The unique radiation exposure conditions that exist in computed tomography (CT), during which thin slices of the patient are irradiated by a narrow, fan-shaped beam of x rays emitted from the x-ray tube during its rotation around the patient, have required the use of special dosimetry techniques to characterize the radiation doses to patients and to monitor CT system performance. This section d...

Abstract The present research introduces a new configuration of thin-walled nested tube structure as possible energy absorber subjected to lateral compression. nested-tube structures were configured in system comprising four tubes arranged different ways. All the systems quasi-statically compressed direction on universal mechanical tester obtain their absorption characteristics. Two modes defor...

Abstract In this study, the impact of leading-edge diameter a Pitot tube on mean flow decaying turbulence generated by multi-scale grid was investigated. Standard tubes with leading edge diameters 4 and 6 mm were used in installed at entrance test section to generate turbulence. The characteristic velocity observed be 2.8 m/s. downstream region section, velocities measured two sufficiently good...