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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 18 of 18 for “"Effect of radiation on."”.
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Effect of radiation on silicon and borosilicate glass
… logically divided into two parts, both involving radiation damage effects. The first is a study of the effects of neutron and gamma radiation on the dimensions of two borosilicate glasses, Pyrex® and Hova SD-2®. These two glasses are commonly used as substrates for silicon microelectromechanical …
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Modeling the effects of proton irradiation [on] CIGS solar cells
The space environment is very harsh on photovoltaic devices. Solar protons (hydrogen ions) cause large numbers of vacancies, which act as recombination centers at deep levels and can create compensating defects that reduce the acceptor concentration at shallow levels in semiconductors. This in …
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Radiation-induced changes in the export of photoassimilated carbon /|nBarry Jess Shelp. -- 260 0 St. Catharines, [Ont. : s. n.],
Low levels of ionizing radiation induce two translocation responses in soybean: a reduction in photoassimilate export from leaves and a change in the distribution pattern of exported photoassimilate within the plant. In this investigation these responses have been further studied specifically to …
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Effect of Interstitial Fluid Flow and Radiotherapy on Glioblastoma Invasiveness and Progression
… and malignant glioma. It accounts for 48.6% of all primary, malignant gliomas with a median survival of 15 months. Infiltration into the surrounding parenchyma is a hallmark of GBM. Radiotherapy is used to address the invasion; however, recent studies have implicated that radiation …
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Analysis of single event transients in arbitrary waveforms using statistical window analysis
Window functions are commonly used in data processing to detect transient events or for time-averaging of frequency spectra. A generalized window function is demonstrated using the Ionizing Radiation Effects Spectroscopy (IRES) technique to enhance the measurement of transient anomalies within …
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Predicting the severity of radiation skin reactions in women with breast cancer
Skin reactions are unavoidable side effects of radiotherapy for breast cancer that may limit the amount of treatment a patient is able to receive. As well, the discomfort associated with the treatment may negatively affect the patient's quality of life and their willingness to complete a course of …
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Ionizing radiation effects spectroscopy
The reliability of microelectronics operating in harsh environments is a concern for space systems. 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 …
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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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Ceramic interfaces and their radiation response
… various properties, making them the material of choice for many different applications. However, in extreme environments such as one that contains radiation, the physics and the material science of how the ceramic materials change still need to be clarified. In this present examination, the …
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Design and construction of high-temperature, high-vacuum tensile tester for fusion reactor materials
Fusion energy is a promising carbon-free, limitless source of energy that could contribute to mitigating global climate change. One of the critical challenges in realizing fusion energy is the survival of structural materials in the extreme environment of a fusion device. Specifically, materials …
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Comparison of Chlorophyll, Carotenoid, and Alpha-tocopherol in E-beam, Gamma, and X-ray Treated 'Granny Smith' Apples
<p>This study aimed to investigate the impact of phytosanitary radiation modality on the lipophilic antioxidants in peels of ‘Granny Smith’ apples. Freshly harvested ‘Granny Smith’ apples were treated with gamma (0.2 kGy), X-ray (0.495 kGy), and e-beam (0.77 kGy) radiation and stored in air at 1 ⁰C …
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Specific and efficient in vivo delivery of DNA and siRNA by polyethylenimine and its derivatives
… polyethylenimine (PEI) is the "gold standard" of polycationic gene delivery vectors. However, little focus has been placed on enhancing or understanding the specificity of PEImediated gene delivery. Herein we evaluated the effect of chemical modification on the specificity of PEI-mediated …
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The effects of the modification of energy metabolism on cellular response to ionizing radiation
… accepted that energy is required for repair of radiation-induced damage in living cells. Some of this energy is probably provided by adenosine triphosphate (ATP), which is derived from energy substrates via energy metabolism. This dissertation follows two general avenues. The first explores …
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Water Maze Strategies used by Mice Exposed to Radiation and Pomegranate Juice
<p>Space radiation can be detrimental to the whole body and can produce oxidative stress in specific areas in the brain. Research has shown that radiation affects the hippocampus, which is responsible for relational/contextual types of learning and memory. Spatial learning and memory is one type of …