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viii, 160 leaves : ill., tables ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1978

viii, 160 leaves : ill., tables ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1978

Thesis (Ph.D.)-- University of Adelaide, Dept of Physical and Inorganic Chemistry, 1978.

Cette étude s’inscrit dans le cadre du projet FE²E visant à développer un fusible plus économique et plus écologique. Ce travail a donc été réalisé selon un schéma allant de la caractérisation des matières premières à la fabrication de composants électriques à l’aide de matériaux géopolymères. La réactivité des solutions de silicate a été déterminée par spectroscopies infrarouge, Raman et résonance magnétique nucléaire. Les interactions entre les solutions et du sable ont ensuite été étudiées selon différentes méthodes d’imprégnation et différents types de séchage, afin d’optimiser les propriétés mécaniques des blocs de sable aggloméré. Le remplacement des corps de fusible par des liants géopolymères a été envisagé par la création d’un dépôt ou par coulage du liant. Ensuite, la validation des propriétés thermiques des liants et les interactions entre un liant et une surface métallique ont permis d’envisager une rupture technologique. Finalement, il a été démontré qu’il était possible d’obtenir un fusible ou un busbar à base de liants géopolymères. / This study is a part of the FE²E project and was accomplished in order to develop an economic and ecologic fuse. The methodology covers different steps going from the raw materials characterization to the manufacturing of electrical components (as fuse and busbar) with geopolymer materials. The reactive species in alkaline solutions were determined by FTIR, NMR and Raman spectroscopies. Then, the interactions between the sand and the solutions were studied using various impregnation and different curing methods in order to optimize the mechanical properties of agglomerated sand. Fuse body replacement by geopolymer binders by a coating or by casting in a mold were considered. Then, the validation of the thermal properties by thermal treatment and the interactions between a geopolymer binder and a metallic surface conduce to a technological disruptive. Finally, the possibility to obtain a geopolymer-based fuse or busbar was clearly evidenced.

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Saturated markets and a competitive business climate create pressure on organisation to find new ways to remain competitive and differentiated towards competitors. One new strategy is to adapt a more service oriented business, and more specifically a concept call solutions. Solutions is about moving from only selling e.g. products or single services, to offer a whole solution to cover more needs, an offer usually created together with the customers. This demand on the market together with limited research on the concept of solution, makes it an interesting area to study. The purpose with the study was to describe the whole solution process between the supplying firm and the customer. In order to do so, a longitudinal, dynamic model based on extant literature was developed, which consisted of three stages and 11 important factors throughout these three stages. The primary data collection came from interviews with managers from five companies, all experienced within the area of solution strategy. Out of the eleven theoretical factors, four factors were explicitly highlighted as most important.

This thesis examines the numerical solution to Burgers' equation on a finite spatial domain with various boundary conditions. We first conduct experiments to confirm the numerical solutions observed by other researchers for Neumann boundary conditions. Then we consider the case where the non-homogeneous Robin boundary conditions approach non-homogeneous Neumann conditions. Finally we numerically approximate the steady state solutions to Burgers' equation with both the homogeneous and non-homogeneous Robin boundary conditions. / Master of Science

Rate constants for chemical reactions in various aqueous systems have been measured and analysed. A major part of this thesis discusses the effect of added salts on the reaction kinetics of organic substrates and the effect of added cosolvent on iron(II) complexes in solution. The thesis discusses the properties of aqueous solutions with reference to the prediction of trends in kinetic parameters. Transfer chemical potentials for single ions in 'urea + water' mixtures have been estimated, using solubility data for salts in conjunction with the tetraphenylarsonium tetraphenylboronate assumption. Solvent effects on the initial and transition states for reactions between iron (II) 1,10-phenanthroline and iron(II) glyoxal bis-N methylamine with hydroxide ions are also reported. Solvent effects on initial and transition states for reaction between three iron (II) complexes and hydroxide ions in 'methanol + water' mixtures are reported. Effects of added salt on the neutral hydrolysis of phenyldichloroacetate and the para-methoxy derivative are discussed in terms of solvent cosphere interactions between ions. With regard to computer-based studies osmotic coefficients for ammonium, alkylammonium and azoniaspiroalkane halides have been used with Pitzer's equations and the ideas of Wood et al to produce pairwise Gibbs function cosphere-cosphere interaction parameters. The effects of added salt on rate constants for the alkaline hydrolysis of the sodium salt of bromophenol blue are reported and analysed using Pitzer's equation for the activity coefficients of single ions in aqueous salt solutions. Internal pressures of water and deuterium oxide in the region 273.15? T/K ?373.15 and 0? P/bar ?1000 have been calculated and fitted to an equation based on a Taylor expansion about internal pressure ?i (?,0) at temperature T = 0 and pressure p = n. Calculations are reported which shed light on the controversy concerning the isobaric heat capacities for activation for the solvolysis of alkyl halides in water.