Chemistry of bis(O-ethyldithiocarbonato)cadmium(II) and flotation properties of aminodithiocarbonates
- Authors: Griffiths, Philip
- Date: 1976
- Type: Text , Thesis , Masters
- Full Text: false
- Description: Masters of Applied Science
A study of sulphur xanthates in relation to their role in froth flotation of sulphide minerals
- Authors: Honeyman, Ronald
- Date: 1980
- Type: Text , Thesis , Masters
- Full Text: false
- Description: Potassium alkyl xanthates are commonly used as collectors in the flotation of sulphide minerals. Much research has been directed to the formulation of mechanisms responsible for the hydrophobicity of the sulphide minerals in xanthate flotation. Alkyl dixanthogen plays an important role in this mixed-potential mechanism, and is regarded as the species which imparts hydrophobicity to the mineral surface. Winter has recently suggested that sulphur xanthates, which are chemically very similar to alkyl dixanthogen, may play a significant role in the processes rendering the sulphide minerals hydrophobic during froth flotation. The aim of this investigation was to develop techniques for the separation and identification of sulphur xanthates at very low levels of conecentration. Techniques employed were Molecular Emission Cavity Analysis Spectroscopy and High Performance Liquid Chromatography. It was possible to extract the sulpur xanthates from simulated flotation liquors, separate the individual species, and determine them to a level of 0.05 ppm in the liquor. Aklyl sulphur dixanthates were found to disproportionate in methanol solution.
- Description: Masters Degree in Applied Science
A polarographic study of lignin reactions in soda pulping liquors
- Authors: Burton, Peter
- Date: 1986
- Type: Text , Thesis , Masters
- Full Text: false
- Description: Oxidation-reduction reactions between carbohydrates, lignin and quinone additives in Pinus radiata soda pulping liquors have been investigated. A reduction peak at -0.72 V (Vs SCE) was observed using differential pulse polarography when Pinus radiata wood is heated in alkaline solution in the presence of oxygen, and has been shown to result from the oxidation of lignin structures. The results of this study indicate that the electroactive species present in Pinus radiata soda pulping liquors is an oxidation product, resulting from the formation of phenoxy radicals and /or quinone methides. Although reduction potentials for anthraquinone, carbohydrates and the electroactive lignin structure fit the general redox mechanism propsed for accelerated delignification, the species observed by polarography in this study has been shown not to be involved in the main pulping reactions due to its low concentration.
- Description: Master of Applied Science
A differential scanning calorimetry study of some metal 2,4 pentanedionates
- Authors: Murray, John
- Date: 1987
- Type: Text , Thesis , Masters
- Full Text: false
- Description: The sublimation enthalpy of beryllium (II), aluminium (III), chromium (III), iron (III), cobalt (III), nickel (II), copper (II), oxovanadium (IV) and zirconium (IV) 2,4 -pentanedionate complexes has been determined by vacuum Differential Scanning Calorimetry (DSC), subsequent to benzoic acid being proposed as calibrant for this technique. In conjunction with existing thermochemical data for these complexes, metal-ligand homolytic bond dissociation energies are calculated and are rationalized in terms of the ionic size of the coordinated meta and the crystal field stabilization energies for the complex. Old and new methods for the determination of sublimation enthalpy are reviewed and the present data collectively reveal the versatility and precision of DSC fort the direct determination of sublimation enthalpies of metal complexes. The new sublimation enthalpy data presented for metal 2-4- pentanedionate complexes effectively ends the controversy associated with the previously reported corresponding data/
- Description: Master of Applied Science
A quantitative risk assessment of laboratory fume cupboards at Monash University
- Authors: Tillman, C.J.
- Date: 1990
- Type: Text , Thesis , Masters
- Full Text: false
- Description: "In this work, a quantitative risk assessment procedure for laboratory fume cupboards has been developed using estimates of frequency (probabilty x exposure) and severity."
- Description: Masters Degree in Applied Science, Occupational Health and Safety
Lifting devices used by hospital staff; their relationship to the handling of patients
- Authors: Lean, Leonard
- Date: 1991
- Type: Text , Thesis , Masters
- Full Text: false
- Description: This paper investigates the utilisation of lifting devices by hospital staff, in relation-ship to the handling of patients and the reasons for this. A survey was conducted at Flinders Medical Centre, Adelaide during June and July 1989 using a questionnaire which returned 54% (n=110) completed returns. The results showed a lack of available lifting devices; 16.4% (n=18) of health care respondents had no lifting devices available in their work area while 14.5% (n=16) of respondents had only one lifting device. Where lifting devices were available, 63.6% (n=70) of respondents used the lifting devices less than three times in the week prior to the survey. 24.6% (n=27) of respondent health care workers were of the opinion that lifting devices were not very appropriate for patient handling tasks and 12.7% (n=14) of respondents found the devices difficult to use. 22.7% (n=25) of respondents indicated insufficient room for the use of the devices. 19.1% (n=21) of respondents consider the floor plan layout in which they to be utilised obstructive. 24.5% (n=27) were of respondents found that the lifting devices were not very mobile. 24.6% (n=27) of respondents considered that the setting-up time of the lifting devices took too long and 18.2% (n=20) were of the opinion that the devices were located too far away from the workplace for quick and convenient access. Strong emphasis in the literature review is placed on Common and Statute Law of the employer's "Duty of Care" to the health care workers. The main recommendation is that users need to have input into the design of the equipment. Also, user require initial training and require on-going refresher training in the use of lifting devices for patients. Supervision of users of lifitng devices is essential.
- Description: Thesis (Master of Applied Science )
A cost analysis of accidents and injuries in the open cut coalmining industry
- Authors: Esson, Ken
- Date: 1992
- Type: Text , Thesis , Masters
- Full Text: false
- Description: Following a study of back injuries in the Queensland Coal Industry, there arose several questions that needed further research. One of these was the cost of accident and injuries, and the impact of this cost would have on an organisation. The project's research involved a comprehensive study of literature pertaining to the cost of accidents and injuries. This included both insured and uninsured costs. The following four classifications of accidents were researched; first aid treatments; first aid doctor treatments; lost time injury cases; and equipment accident damage cases. A coal mine was selected for the pilot study and, data was collected on the four classifications over a complete year. This means a year that has no out standing accident cases or liablilities. The research was then considered to determine its support for the acceptance or rejection of the hypothesis whic postulates that the current methods used to analyse the cost of accidents or injuries in the coal mining industry are inadequate. As a result of the above condsiderations, a number of key points are put forward in support of the acceptance of the hypothesis. The research established costs both insured and uninsured for the four classifications under review. Then a calculation of a weighted ratio of uninsured costs was made. The paper concludes by making certain recommendations and supporting the need for further research into accident costing within the coal mining fraternity.
- Description: Masters in Applied Science in Occupational Health and Safety
Australian occupational protective footwear standards under mutual recognition legislation : can end-user protection levels be reduced as a result of the introduction of this legislation in Australia in 1993?
- Authors: Taylor, Anne
- Date: 1993
- Type: Text , Thesis , Masters
- Full Text: false
- Description: "This thesis aims to investigate the effect of mutual recognition legislation on the sale and use of occupational protective footwear within Australia to determine if there is the potential for end-user protection levels to be reduced below those required by the Australian Standard, AS/NZS 2210."
- Description: Master of Applied Science
The application of marketing concepts to occupational health and safety in an Australian University
- Authors: Giles, Murray
- Date: 1993
- Type: Text , Thesis , Masters
- Full Text: false
- Description: The dissertation examines the legal, financial and social responsibilities that Universities have in complying with minimum occupational health and safety performance standards.The marketing principles and techniques identified in this project may assist Occupational Health and Safety managers to enhance the service provided.
- Description: Masters of Applied Science, Occupational Health and Safety
Cadmium and human prostatic carcinoma : a study of the analytical procedures for the determination of cadmium and zinc in human prostatic tissue, and the investigation of an association between the incidence of prosatatic adencarcinoma and the occurrence of prostatic cadmium
- Authors: Moran, Robert
- Date: 1994
- Type: Text , Thesis , Masters
- Full Text: false
- Description: The concentrations of the heavy metals cadmium and zinc in both benign nodular hyperplastic and malignant (adenocarcinoma) human prostatic tissue obtained from Trans Urethral Resections of the Prostate (TURP) have been investigated. Healthy normal human prostates obtained from post mortem cadavers were used as controls. The change in the prostatic cadmium concentration with age was investigated. Renal cortex cadmium and zinc concentration changes with age together with the metal concentration intterelationships between prostatic and renal cortex tissues were studied. "From abstract"
- Description: Master of Applied Science
An evaluation of the G.Dip. OHM at the University of Ballarat 1979-1992
- Authors: Swann, Ian
- Date: 1996
- Type: Text , Thesis , Masters
- Full Text: false
- Description: The objective of the study was to evaluate the Graduate Diploma of Occupational Hazard Management at the University of Ballarat.
- Description: Thesis (Master of Applied Science)
Dodonaea viscosa complex in South East Australia :seed bank and germination studies
- Authors: Mohammed, Syed
- Date: 1996
- Type: Text , Thesis , Masters
- Full Text: false
- Description: A study was undertaken over one year of the habitat of Dodonaea viscosa subsp. angustissima at Hattah in north west Victoria. These studies, combined with further investigations, indicated significant differences in the germination requirements and behavior of the three species studied.
An evaluation of supervisor's accident investigation reports
- Authors: Thompson, Gary
- Date: 1997
- Type: Text , Thesis , Masters
- Full Text: false
- 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: Master of Applied Science
Chemical management in research laboratories : South-Eastern Australia, 1997
- Authors: Bailey, Trevor
- Date: 1997
- Type: Text , Thesis , Masters
- Full Text: false
- 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."
- Description: Master of Applied Science
Dynamic modelling and optimisation aspects of take-off mechanics in aquatic sports
- Authors: Preston, Shane
- Date: 1997
- Type: Text , Thesis , Masters
- Full Text: false
A study of solid and protein extraction in tofu production
- Authors: Yuwono, Sudarminto
- Date: 1998
- Type: Text , Thesis , Masters
- Full Text: false
- 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)
Copper loss into rotary holding furnace slag
- Authors: Burrows, Alistair
- Date: 1999
- Type: Text , Thesis , Masters
- Full Text: false
- 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: Doctor of Philosophy
Action research and occupational health and safety: an exploratory study
- Authors: Runnalls, John
- Date: 2000
- Type: Text , Thesis , Masters
- Full Text: false
- Description: "This paper describes an exploratory study into action research and its potential application within the field of Occuptional Health and Safety (OHS) in Australia."
- Description: Master of Applied Science
Acute cardiovascular responses during post-exercise recovery to short-term exhaustive exercise
- Authors: Zichy-Woinarski, Christopher
- Date: 2000
- Type: Text , Thesis , Masters
- Full Text: false
- Description: "The aim of this study was to examine the effect of consecutive bouts of acute exhaustive exercise in a hot ambient environmemt on baroreflex gain, plasma volume and heart variability one week post-exercise in trained individuals." Problem with pages xviii-xx Pages 9-37 missing.
- Description: Masters of Applied Science
An investigation of actual and perceived home environmental hazards which contribute to falls of elderly Chinese
- Authors: You, Liming
- Date: 2000
- Type: Text , Thesis , Masters
- Full Text: false
- Description: "The aim of the research project is to describe and compare the actual home environment hazards which contribute to falls of elderly Chinese."
- Description: Master of Nursing