Description:
"This study sets out to investigate the current scientific basis of training in swimming, from the novice to elite levels and provide formats to monitor training in line with current science and technology, and to provide the practitioner on the pool deck with a tool that will assist him or her in the planning process, through the use of a computer software package".
Description:
"The thesis argues that reading and spelling are interdependent and complex processes, and that "good" readers. but "poor" spellers, read in ways which do not assist in their developing spelling repertoires: their reading behaviours contribute to overall text meanings wihout contributing to individual word knowledge. As well, their writing behaviours do not allow for this knowledge to be used, practised, or displayed."
Description:
An important industrial problem is the production of wastewater containing a large amount of heavy metal ions. The study described in this thesis is trying to use precipitate flotation technology to explore techniques for not only removing heavy metal ions from the solution, but also selectively separating them to recycle of the recoyered metal value from industry wastewater. Zinc and copper hydroxide precipitation and flotation behaviour have been studied. lt shows that it is almost impossible to separate copper and zinc ion using hydroxide precipitate flotation when the solution contains Fe3+ or Al3+ ions. The influence of additional ions such as Ca2+ and Mg2+, and other electrolytes on the flotation and separation have been studied. DLVO theory has been used to explain the mechanisms occurring in the process. A new process, named "self-carrier" precipitate flotation us~g anionic surfactants, has been developed to improve the flotation recovery and reduce the consumption of collector. The mechanism of the process is discussed in detail with reference to data collected from Optical Microscopy, Scanning Electron Microscopy and Zeta Potential Measurement. The xanthates are the most commonly used class of sulphide mineral collectors. This study investigated the copper sulphide precipitate reactions and the aggregation behaviour, the influence of oxidation, additional ions etc., and successfully used xanthate to float the sulphide precipitates. The mechanisms occurring in this process have been discussed. The investigation of the sulphide precipitate flotation behavior using a cationic collector has also been carried out to discover the possibility of copper and zinc separation. An important application of this study is the flotation and separation of copper and zinc ions from industry wastewater. The tailing wastewater from a mineral processing plant, Woodlawn Mines (N.S.W., Australia), which contains high concentrations of harmful heavy metal ions was used to test the flotation and separation of the heavy metal ions. Both xanthate and cationic collectors have been investigated for the flotation separation. Effective separation has been achieved .
Description:
An important industrial problem is the production of wastewater containing a large amount of heavy metal ions. The study described in this thesis is trying to use precipitate flotation technology to explore techniques for not only removing heavy metal ions from the solution, but also selectively separating them to recycle of the recoyered metal value from industry wastewater. Zinc and copper hydroxide precipitation and flotation behaviour have been studied. lt shows that it is almost impossible to separate copper and zinc ion using hydroxide precipitate flotation when the solution contains Fe3+ or Al3+ ions. The influence of additional ions such as Ca2+ and Mg2+, and other electrolytes on the flotation and separation have been studied. DLVO theory has been used to explain the mechanisms occurring in the process. A new process, named "self-carrier" precipitate flotation us~g anionic surfactants, has been developed to improve the flotation recovery and reduce the consumption of collector. The mechanism of the process is discussed in detail with reference to data collected from Optical Microscopy, Scanning Electron Microscopy and Zeta Potential Measurement. The xanthates are the most commonly used class of sulphide mineral collectors. This study investigated the copper sulphide precipitate reactions and the aggregation behaviour, the influence of oxidation, additional ions etc., and successfully used xanthate to float the sulphide precipitates. The mechanisms occurring in this process have been discussed. The investigation of the sulphide precipitate flotation behavior using a cationic collector has also been carried out to discover the possibility of copper and zinc separation. An important application of this study is the flotation and separation of copper and zinc ions from industry wastewater. The tailing wastewater from a mineral processing plant, Woodlawn Mines (N.S.W., Australia), which contains high concentrations of harmful heavy metal ions was used to test the flotation and separation of the heavy metal ions. Both xanthate and cationic collectors have been investigated for the flotation separation. Effective separation has been achieved .
Description:
"This thesis is an analysis of the construction of, and contestation over, meanings about quality teaching in higher education in Ausralia, during the period 1992-1996."
Description:
"This thesis is an analysis of the construction of, and contestation over, meanings about quality teaching in higher education in Ausralia, during the period 1992-1996."
Description:
The Rotary Holding Furnace (RHF) is used in combination with the Copper Isasmelt Furnace as a settling vessel. This study investigated the phenomenon of entrained copper losses into RHF slag. Research work was conducted by laboratory-scale flow modelling, and by plant sampling of the RHF at Mount Isa Mines Limited. Laboratory fold modelling was conducted to measure the residence time distribution of a simulated slag layer in a l;'0 -scale model of the RHF. A novel technique, involving a copper tracer dissolved in an organic solvent extractant solution, was used for these experiments. Plant trials complemented the laboratory work with a variety of slag sampling campaigns. Residence time tests were also attempted on the RHF slag. In combination, the laboratory and plant scale experimental work performed in this investigation helped to highlight some likely causes of entrained copper loss in the RHF. Laboratory cold modelling of the RHF suggests that the depth of the upper liquid layer is • likely to affect the fluid flow patterns, and therefore the residence time distribution expected of the layer. A stratification of the flow was prevalent in thick upper liquid layers, but absent when thin upper layers were used. A stagnant region within the upper layer0 0f the model was identified. The introduction of gas injection through porous plugs caused mixing within the upper liquid layer. Stable waves were produced at the liquid liquid interfate. ' .. Plant experiments were constrained by commercial operating schedules. Several parameters were investigated during two different periods of experimental work. Granulated slag sampling indicated a link between the duration of continuous slag discharge and the copper content of the slag. Evidence was found that suggests the presence of interfacial waves.
Description:
The Rotary Holding Furnace (RHF) is used in combination with the Copper Isasmelt Furnace as a settling vessel. This study investigated the phenomenon of entrained copper losses into RHF slag. Research work was conducted by laboratory-scale flow modelling, and by plant sampling of the RHF at Mount Isa Mines Limited. Laboratory fold modelling was conducted to measure the residence time distribution of a simulated slag layer in a l;'0 -scale model of the RHF. A novel technique, involving a copper tracer dissolved in an organic solvent extractant solution, was used for these experiments. Plant trials complemented the laboratory work with a variety of slag sampling campaigns. Residence time tests were also attempted on the RHF slag. In combination, the laboratory and plant scale experimental work performed in this investigation helped to highlight some likely causes of entrained copper loss in the RHF. Laboratory cold modelling of the RHF suggests that the depth of the upper liquid layer is • likely to affect the fluid flow patterns, and therefore the residence time distribution expected of the layer. A stratification of the flow was prevalent in thick upper liquid layers, but absent when thin upper layers were used. A stagnant region within the upper layer0 0f the model was identified. The introduction of gas injection through porous plugs caused mixing within the upper liquid layer. Stable waves were produced at the liquid liquid interfate. ' .. Plant experiments were constrained by commercial operating schedules. Several parameters were investigated during two different periods of experimental work. Granulated slag sampling indicated a link between the duration of continuous slag discharge and the copper content of the slag. Evidence was found that suggests the presence of interfacial waves.
Description:
"The overall aim of this research is to develop efficient data structures, algorithms and techniques that can be used to model the combination of artificial structures and realistic terrain."
Description:
"The broad objective of this study is to explore the role that employer associations can play in delivering an active and sustainable range of OHS services to industry and the potential for greater utilisation of this network by governments in delivering significant improvements in OHS performance in Australian workplaces."
Description:
"This thesis presents a considered artistic statement about how I experience and how I strive to embody, my notion of reality through the process of painting and drawing. It considers the activity of the creation of reality through a synthesis of perceptual and conceptual functioning. The thesis proposes that when a painted surface is viewed, the marks on this plane are arranged by the mind of the viewer to form an image which becomes infused with meaning. The created visual structures, in this way, promote a formerly undiscovered, conceptual reality."
Description:
"The aim of this thesis was to investigate the process by which policy regarding the use of computers in the classroom was developed in a secondary school in a Victorian provincial city. It seeks to determine whether a policy determined at a State Education Department level may be redefined at a local school administrative level and the changes that may occur when that policy is implemented in the classroom"
Description:
"This project applies an analysis of narrative, its elements, strategies and devices to figurative painting within the practical project of producing visual narrative fiction."
Description:
"The aim of this study was to investigate the extraction process, in particular the effects of solid and protein extractability in tofu production and their effects on tofu quality in terms of physical, chemical and sensory characteristics."
Description:
Master of Applied Science (Food Technology)
Description:
"The aim of this study was to investigate the extraction process, in particular the effects of solid and protein extractability in tofu production and their effects on tofu quality in terms of physical, chemical and sensory characteristics."
Description:
Master of Applied Science (Food Technology)
Composition and ecology of the flora and fauna of remnant native grasslands of the western basalt plains and northern plains of Victoria : implications for management on private property
Description:
"This thesis investigated a) the effects of the removal of grazing on the botanical composition, structure and biomass of two long-grazed species-rich grassland remnants, b) the habitat use and requirements of the ground-dwelling mammal, reptile and amphibian fauna and c) the composition, and abundance of the beetle, ant and spider assemblages."
Description:
"This thesis investigated a) the effects of the removal of grazing on the botanical composition, structure and biomass of two long-grazed species-rich grassland remnants, b) the habitat use and requirements of the ground-dwelling mammal, reptile and amphibian fauna and c) the composition, and abundance of the beetle, ant and spider assemblages."
Description:
The purpose of this investigation was to study how individuals internalise the health and fitness ethic and to consider how this ethic is expressed in individuals' exercise regimes. Consideration is given to what causes individuals to exercise in this manner and what impact it has on their embodiment.
Description:
The aim of the study was to determine if tobacco smoking contributes to elevated blood lead levels, in a study of sulphide exposed mining process workers.
Description:
The aim of the research project is to investigate the veracity of negative criticisms of supervisors' accident investigations by using the generalised time sequence model as the analytical tool to evaluate the data recorded in a convenience sample of supervisors' accident investigation report forms.
Description:
The aim of the research project is to investigate the veracity of negative criticisms of supervisors' accident investigations by using the generalised time sequence model as the analytical tool to evaluate the data recorded in a convenience sample of supervisors' accident investigation report forms.
Description:
"Through a comprehensive literature review this project examines the necessary components of a laboratory chemical safety program, including requirements under the new hazardous substance regulations. It also examines, via a survey, the problems associated with the laboratory use of chemicals and with compliance with the new regulations. Finally the current situation in Australia and the approach research laboratories must take in the future to achieve compliance with the new regulatory package are reviewed."