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 9 of 9 for “"Arrhenius behaviour"”.
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Oxidation kinetics of 316l stainless steel in the pressurised water reactor environment
… steel, which accommodated the deviation from Arrhenius behaviour through the measured temperature range. Functions for both the rate constant, ��3 0 , and the transfer coefficient, α3, associated with the metal/oxide interface reactions were developed. The resultant model was able to predict, …
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Higher Order Structure in the Energy Landscapes of Model Glass Formers
… and incomplete. However, the link between the behaviour of supercooled liquids and their energy landscapes is well established and widely accepted. Understanding this link would be a key step towards resolving many of the mysteries and controversies surrounding the glass transition. Therefore …
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The activity and dynamics of enzymes
… –50⁰C, whereas the activity was seen to follow Arrhenius behaviour over the entire temperature range investigated. This result suggests that the enzyme rate-limiting step is independent of fast anharmonic motions below –50⁰C. Cryoenzymology studies of the temperature dependence of catalase and …
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Electrodeposited Ni/Ge and germanide schottky barriers for nanoelectronics applications
… the grown diodes show a high quality rectifying behaviour with extremely low leakage currents even on highly doped Ge. A non-Arrhenius behaviour of the temperature dependence is observed for the grown Ni/Ge diodes on lowly doped Ge that is explained by a spatial variation of the barrier heights. …
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Understanding Allosteric Arginine Mutations Using Macromolecular Rate Theory
… rates have been traditionally modelled with the Arrhenius and Eyring-Polanyi equations. These models assume that the reaction rate is exponential with temperature, and thus the natural log of the reaction rate versus 1/T is linear. Significant deviations from these models at high temperatures has …
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Thermoelectric and charge transport properties in doped and aligned conjugated polymers
… The charge transport mechanism evolved from Arrhenius behaviour to various variable-range hopping regimes, which can be described by Kaiser's heterogeneous model at ultrahigh doping levels. This systematic study yielded a summary of the interrelations between doping level, doping domain, …
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Measuring the temperature response of soil respiration from two distinct carbon pools in soil.
… prior to decomposition, and so exhibits Arrhenius behaviour as temperature increases. The second objective was to use the developed protocol to measure temperature response of respiration was measured for ¹³C-labelled new photosynthate carbon inputs and bulk SOC, partitioned from soils …
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Developing an understanding of the relationship between the durability of simplified and complex UK radioactive waste glasses
… at 40, 70, 80 and 90 °C to investigate the Arrhenius dependence of dissolution. Leached samples were characterised by EDX, SEM and XRD. It was shown that changing the dissolution temperature changed the rate of hydrolysis relative to interdiffusion. At higher temperatures, the initial …
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The thermodynamics, kinetics and modelling of fast-charging lithium-ion batteries featuring crystallographic shear niobium metal oxide anodes
The world increasingly depends on batteries to store renewable energy and use that same energy in our vehicles and portable communication devices. This puts exceeding pressure on global resources. We need batteries that charge faster and live longer, such that we can use less resources. Faster …