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Typescript. / Thesis (Ph. D.)--University of Hawaii, 1967. / Bibliography: leaves 243-254. / xv, 254 l illus., tables

Typescript. / Thesis (Ph. D.)--University of Hawaii, 1970. / Bibliography: leaves [76]-79. / vi, 79 l maps, graphs, tables

<p>It is widely believed that hydrogen will, within a few years, become the means of storing and transporting energy. The reason is the depletion of hydrocarbons and the relatively facile production of hydrogen from various renewable sources of energy. Hydrogen can be combusted in an efficient way in a fuel cell with water as emission product. The overall goal of the project was to deevlop the knowledge base for solid-state hydrogen storage technology suitable for stationary and mobile applications. The aim of this research was to develop a novel composite hydrogen storage material with high wt% storage capacity, high intrinsic safety, appropriate thermodynamics, high mechanical strength, reversibility of the system and fast kinetics based on a well known &quot / low temperature&quot / intermetallic alloy (Ti/Fe) as the core.</p>

This thesis describes two studies of the chemistry of freshwater streams in the Sydney basin. The first was a survey of 86 waterways, sampled under low conditions. Samples were generally low in salinity, soft, of poor buffering capacity and dominated by sodium and chloride. C0-dominance by calcium, magnesium and (bi)carbonate occured in a number of particular cases. Multivariate analyses indicated three groups, separated primarily by levels of dissolved nutrients, trace metals, turbidity and colour. Groupings were associated strongly with the type of catchment. Streams in areas relatively unaffected by human influence had notable uniformity in chemistry, while those from developed catchments were varied. Heavy metal contamination was relatavely low, although a few of the samples displayed inordinately large levels of one or more metals. In such cases the more extreme measurements of phosphorus and nitrogen were also seen. The findings were consistant with occasional or localised elevation of contaminant levels. The second study invloved monitoring of three Hawkesbury Sandstone streams. Sampling of surface waters, interstial waters and sediments was performing at irregular intervals over a two year period at three stations within each site. The streams predominantly existed under low conditions and showed similar major ion chemistries to the majority of the survey samples. Levels of calcium and total carbonate, plus heavy metals and nutrients were generally higher in the urbanised creeks, comapred to the reference strema. During a heavy storm, high levels of nutrients, suspended solids and colour were detected in all surface waters at peak-flow, as well as alkaline pH, oxidising redox, and reduced conductivity, alkalinity and hardness. The sandy sediments were characterised by very low levels of organic matter and cation exchange capacity. Sequential extractions identified that the sums of secondary phase lead, zinc and copper were over nine, four and two times that of the corresponding residual, respectively. Greatest proportions of zinc and lead were associated with coatings of iron and maganese oxides, or coarse waste particles. Copper was preferentially associated with organic matter. Concentration gradients between interstitial and surface waters were rare and release of sedimentary constituents should occur from the upper-most particulates. Poor water and sediment qualities were often observed in the urban sites. Poor water quality was also seen on occassion in the reference stream. However, since poor sediment quality was not detected at those times and interstitial waters for all sites displayed high within-site variability, surface waters were considered the most reliable short-term indicator of condition for Hawkesbury Sandstone streams. Multidimensional scaling showed that all streams had distinct water and sediment chemistries. High levels of temporal and spatial variability were apparant within the urbanised sites - particularly in interstitial waters - mostly due to concentrations of heavy metals, phosphorus and suspended solids. Seasonal differences were detected, but only in terms of the level of variability between summer and winter samples.

In light of the long-lived, on-going debate surrounding the Aristotelian doctrines of prime matter and the four simple bodies (or 'elements'), the general message of this thesis is surprising: that Aristotle's theory is centred on neither. I argue that Aristotle does in fact have a substantial prime matter, but not the single, featureless, immutable prime matter of tradition. / More particularly, the thesis defends three main points: / Firstly, Aristotle’s discussion of pre-Socratic and Plato’s philosophies of nature reveals a commitment to finding elements in the sense of the most fundamental things knowable. These elements apply to not just matter, but to the whole of nature. The evidence for Aristotle’s commitment to absolute fundamentals is in his word usage: he speaks of the various kinds of elements (roots, first principles, etc.) as absolute fundamentals, and uses the terms interchangeably. The evidence for his interest in nature (rather than only matter) is found within his argument, where the assumptions give away his motives. / Secondly, since Aristotle considers nature to be, as he puts it, a principle of change, his elements turn out to be his familiar three elements of change: form, privation, and substratum. While change is the focus of this framework, the approach allows matter to be analysed, leading Aristotle to a substantial substratum underneath each change. Thus, he confirms the existence of the four simple bodies (earth, water, air and fire), and deduces, from the premise that they change, that there is another substratum beneath them. / And thirdly, since this substratum underneath the four simple bodies is known only by deduction, Aristotle cannot sense its features, and his three-element framework is powerless to analyse it any further. That last substratum is therefore at the edge of his knowledge, and in a purely epistemic sense, it is featureless and prime. / This epistemically prime matter is of no great importance to Aristotle - its primality is not even important enough to warrant extended discussion, and he certainly leaves the way open for further analysis, if ever that substratum turns out to suffer sensible change. In the hands of scholars focussed on the elements of matter, this last knowable substratum was perhaps the inspiration behind the traditional prime matter. / Many recent works deny Aristotle’s support for traditional prime matter. There is a danger that refutations of traditional prime matter refute also my epistemically prime matter, and thus attack the heart of this thesis. However, because they focus on matter rather than on change and nature more generally, those refutations in fact prove harmless, their analysis indeed often agreeing with mine in the course of their discussion.

Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / This thesis seeks to establish architecture’s role in Blackstone’s life and intellectual development. It also endeavours to determine the extent to which the use of architectural metaphor in his great legal text might offer a new perspective on his reputation as a conservative and upon the very genesis of the ’Commentaries’. --p. ii. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1284121 / Thesis (Ph.D.) -- University of Adelaide, School of History and Politics, 2007

Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / This thesis seeks to establish architecture’s role in Blackstone’s life and intellectual development. It also endeavours to determine the extent to which the use of architectural metaphor in his great legal text might offer a new perspective on his reputation as a conservative and upon the very genesis of the ’Commentaries’. --p. ii. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1284121 / Thesis (Ph.D.) -- University of Adelaide, School of History and Politics, 2007

Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of North Texas, May, 2007. / Title from title page display. Includes bibliographical references.