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 6 of 6 for “"natural ageing"”.
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Oxidative stress and seed survival
… is differentially expressed during hydrated, ‘natural’ ageing and desiccation. Similar trends were seen in other recalcitrant species with the increase in lipid peroxidation products occurring around the point of viability loss. However the study of a more orthodox species (papaya) revealed no …
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On the Influence of Gamma-Irradiation Sterilisation and Ageing on the Fracture Properties of Ultra High Molecular Weight Polyethylene
… of the influence of sterilisation and ageing on the chemical, physical and mechanical properties of UHMW-PE. Simulated shelf and in vivo environments enabling a rapid ageing of UHMW-PE corresponding to 10 years of natural ageing were developed. Sterilisation was either conducted by …
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Strength modelling of Al-Cu-Mg Type alloys
… at low temperature followed by short term underageing at higher temperature and then room temperature ageing. Good agreement between the predictions and the experiments indicates that the hardness changes during these multi-stage heat treatments can be well interpreted by considering Cu-Mg …
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Control of Cardiac Remodelling during Ageing and Disease by Epigenetic Modifications and Modifiers
… developmental growth to adulthood and into ageing, the mammalian heart undergoes extensive physiological, morphological and biochemical remodelling. Pivotal to the age-associated alterations in cardiac phenotype is a decline in the proliferative capacity of cardiac myocytes (CMs), which is …
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Resistencia a impacto de morteros de cemento reforzados con fibra de vidrio (GRC)
… hot water tanks). GRC samples were aged up to a natural ageing process of 30 years. A wide and thoroughly study has been done in GRC fracture surfaces of tensile tested samples using an Scanning Electronic Microscope (SEM) searching the causes of the fragilization of GRC with time. GRC dynamic …
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Design and Performance of Cold Bent Glass
… requirements for lightness, transparency and natural light. Current architectural trends require glass in curvilinear forms for smooth free-form façades. Two principal challenges arise from this: to cost-effectively produce the desired curvature and; to ensure its safe performance after …