Understanding the global pattern of glaciation can aid interpretation of what caused late-Pleistocene glacial cycles. Here I investigate the glacial history of the Khumbu Glacier of the Mount Everest region of Nepal. Prominent hypotheses for Himalayan glaciation suggest importan…
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Over the past decades, an immense pandemic of obesity has been developing across the world, in part due to an overabundance of food that is available 24/7. While in ancient history a major need existed to store spare energy for times when food was scarce, the energy-conserving a…
Peroxynitrite (ONOO−), formed from the nearly diffusion limited reaction between nitric oxide and superoxide, could be an important prooxidant in muscle foods. The objective of this dissertation was to (1) determine whether peroxynitrite caused oxidation of muscle lipids; (2) as…
Benzoic acid oxidation process is an intermediate step in the commercial production of phenol through toluene oxidation using air. In this process, phenol can be easily oxidized to undesirable by-products; and the overall reaction rate can be controlled by gas-liquid mass transf…
Currently the mammalian endoplasmic reticulum (ER) is known to contain at least 20 different protein disulphide isomerase (PDI) family members. The oxidoreductases in the PDI family are thought to catalyse the formation and rearrangement of disulphide bonds in newly synthesised …
Aluminum based reactive nanomaterials have extensive applications in many fields including solid propellants, pyrotechnics, and catalytic reactions. One recent example is the novel concept of using nanostructured energetic particles for energy storage where the controlled exothe…
In the present study, efforts have been made to produce protective surface layers in order to improve the tribological, electrochemical and tribo-electrochemical response of titanium. In order to achieve this, two different techniques were employed: 1) thermal oxidation (TO) and…
The synthesis of pure tris(6-hydroxymethyl-2-pyridylmethyl)amine (H₃L₁₁) is reported for the first time. New complexes of H₃L₁₁ with copper(II), manganese(II) and iron(III) have been characterised by X-ray crystallography. Linear [Fe₃(L₁₁)₂](ClO₄)₃ reveals the tightest Fe-O-Fe a…
An advanced concept high temperature reactor (HTR) design has been proposed - The ‘U-Battery’, which utilises a unique sealed coolant loop, and is intended to operate with minimal human oversight. In order to reduce the need for moving parts within the design, CO2 has been selec…
When speciality chemicals are manufactured within the pharmaceutical industry, they are often produced in stirred batch/semi-batch reactors. A ‘methodology’ was explored, to help with the development of continuous fixed-bed catalytic reactors for this sector. This was tested on …
Heightened concerns for cleaner air and increasingly more stringent regulations on sulphur content in transportation fuels will make desulphurization more and more important. The sulphur problem is becoming more serious in general, particularly for diesel fuels as the regulated …
This research work studies the influence of zinc on surface treatments such as mechanical polishing, anodic alkaline etching, alkaline etching and electropolishing. Solid-solution binary alloys containing 0.6, 1.0 and 1.9at.%Zn were investigated using scanning and transmission e…
Supercritical water oxidation (SCWO) is a technique to destroy wet organic waste. The oxidation reaction takes place at high temperature (T > 374°C) and pressure (P > 22 MPa). Organics are miscible with water at these conditions but inorganic salts, such as Na2SO4 and Na2CO3, ar…
A field, laboratory, and modeling study of As in groundwater discharging to Waquoit Bay, MA, shed light on coupled control of chemistry and hydrology on reactive transport of As in a coastal aquifer. Precipitation of Fe(III) oxides, along with oxidation and adsorption of As occu…
This dissertation presents results from a series of experiments involving precipitation of ferrous arsenate, redox reactions between various Fe/As couples, and competitive adsorption. Batch and column experiments were made and interpreted quantitatively using geochemical modelin…
Thermal cracking is a major form of distress in much of the northern United States. Moreover, field performance data indicate that HMA mixtures in the intermountain region of the U.S. experience severe thermal cracking distresses that are not well covered by current technology. …
Abstract not available.
In the last two decades the field of molecular magnetic materials has become a rapidly growing interdisciplinary area in pure and applied sciences. These materials find their application in developing magnetic devices, molecular electronics, nonlinear optics, sensing devices, na…
TiO2 assisted photocatalysis using artificial and solar radiation and solar photo-Fenton processes were employed for the removal of aqueous phase selenite and selenate species in conjunction with EDTA as a hole scavenger. For the UV-lamp light assisted photocatalysis, faster rem…