Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 90 for “"Radiation effects"”.
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Radiation effects on concrete
Digitized by Kansas Correctional Industries
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Radiation effects on concrete
Digitized by Kansas Correctional Industries
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Ionizing radiation effects spectroscopy
… Various stresses, such as exposure to ionizing radiation and extreme temperatures can result in performance degradation, transient anomalies, and hard failures. These issues have become evident in recent years with the increasing interest in the use of commercial-off-the-shelf (COTS) electronics …
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Radiation effects in metal-oxide-semiconductor capacitors
An investigation has been undertaken into the effects of various radiations on commercially made Al-SiO2-Si Capacitors (MOSCs). Detailed studies of the electrical and physical nature of such devices have been used to characterise both virgin and irradiated devices. In particular, an investigation …
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Radiation effects on the blood-brain barrier
Selective vascular irradiation enables the critical examination of the vasculature and its role in the onset of late radiation effects. It is a novel approach to expose the endothelial cells to much higher levels of ionizing radiation relative to normal cells by utilizing the boron neutron capture …
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Probabilistic risk assessment of system-level radiation effects
System-level radiation effects analysis is performed using a time-dependent Probabilistic Risk Assessment (PRA) methodology. Data-driven models for the expected behavior of radiation-sensitive parts are instanced in a system model for Fault Tree Analysis (FTA). The system model is then solved using …
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Studies of Radiation Effects in Three High Polymers
… of the materials before and after irradiation were measured using an AC electrical dissipation factor technique. From the T<sub>g</sub> data, it was found that the electron radiation at these total doses results in net chain scissioning in Mylar and net crosslinking in Ultem, while …
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Radiation Effects on Thermal Properties of Advanced Nuclear Materials
Understanding the effects of irradiation on critical thermophysical properties is fundamental for the advancement of next-generation nuclear systems operating in high-flux neutron and gamma environments. Zirconium hydride (ZrH) and yttrium hydride (YH) have emerged as promising neutron moderating …
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Modeling of radiation effects on nuclear waste package materials
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1988.
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Computational Modeling of Radiation Effects on Total Temperature Probes
… be much hotter than its surroundings, leading to radiation heat losses. This in turn will lead to large errors in the temperature indicated by the thermocouple. Because the design and testing of thermocouple sensors can be time consuming and costly due to the many parameters that can be varied and …
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Personalised Risk Assessment of Low-dose Radiation Effects on Spermatogenesis
… public concern has arisen about the health effects of long-term, low-dose environmental radiation exposure and contamination. From the point of view of radiation microdosimetry, the energy deposition of radiation from low-dose exposure (such as from environmental radiation) is localised …
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Computer simulation and topological modeling of radiation effects in zircon
… the structural response of zircon (ZrSiO4) to irradiation using molecular dynamics (MD) computer simulations, and to develop topological models that can describe these structural changes. Topological signatures, encoded using the concepts of primitive-rings and local clusters, were developed and …
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Pilot Awareness and Preventative Measures of Ultraviolet Radiation Effects at Altitude
Ultraviolet radiation exposure to pilots while flying at altitude is an issue that has not been widely distributed to the aviation community. Ultraviolet radiation can have long term effects on pilots, and yet there remains a gap in the practical understanding and the preventative measures that can …
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Transient Nuclear Radiation Effects on the Transmission of Pyrex at 633 nm
Made available in DSpace on 2017-07-06T18:59:26Z (GMT). No. of bitstreams: 3 Williams_Wade_H_MS.pdf: 55121727 bytes, checksum: 7d5f890de2145f4d859194234bff0f5a (MD5) Williams_Wade_H_MS_ABS.pdf: 919143 bytes, checksum: cf7c69e07b93380268da8adbd36e2981 (MD5) license.txt: 4813 bytes, checksum: …
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Study of Radiation Effects on FPGA and GPU based Neural Networks Accelerator Designs
… they are used in environments affected by radiation such as space exploration, medical devices, etc. Therefore, the reliability of IC devices in radiation-hazard environments has become an important issue. Energetic particles, such as protons, neutrons, and heavy ions, can penetrate the …
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Characterisation of radiation effects in ultra-thin GaAs solar cells for space applications
… in space power systems for particularly harsh radiation environments, due to their high intrinsic radiation tolerance. The work presented in this thesis focuses on such a cell design, incorporating an 80 nm thick GaAs absorber layer, and furthers the understanding of the electrical behaviour of …
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An electro-optical simulation methodology for the analysis of single-event radiation effects in photonic devices
… systems increasing in recent years, the study of radiation effects in PICs is still limited, especially the transient radiation effects known as single-event effects (SEEs). A roadblock in advancing the understanding of SEEs in PICs is the inability to co-simulate radiation effects in both the …
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