subject:(minerals)

1. Banda, Sraj Umar. Design parameters and management strategies of soil and rock slopes: Nchanga open pit-Konkola copper mines plc.

Degree: 2013, University of Zimbabwe

URL: http://dspace.unza.zm/handle/123456789/2033

► Rock slope stability is a very important research area for many geo-engineers concerned with civil or mining works. Slope stability of pits, roads, tailings dams… (more)

▼ Rock slope stability is a very important research area for many geo-engineers concerned with civil or mining works. Slope stability of pits, roads, tailings dams and other embankments is very cardinal as it directly impacts on the working or utilisation of these facilities. The Nchanga Open Pit has presented special challenges. This research is directed towards efforts to determine slope design parameters of the Chingola Open Pit F and D (COP F-D) Phase III, which is an important satellite pit of the Nchanga Open Pits. After recent accidents in this mine, attention has been drawn to the need to understand failure mechanisms of the slopes on this site and the need to determine acceptable risks of mining at the designed pit slopes. In addition, further analysis on the management of these slopes is required.COP FD phase II has been operated since 2003 with the slope design parameters projected from phase I (which started in 2001) and as such a need arose to determine specific design parameters for phase III because of variations in geological conditions between Phase I and Phase III. The methodology in this research included reconnaissance surveys, literature review, field work which comprised core logging, mapping, slope monitoring (water table, cracks and slope movements), laboratory testing, data analysis using specialised software and report preparation. In addition, a risk assessment (economic and safety for workers and equipment) was carried out based on Phase II data. Existing slope management strategies were reviewed. Three geotechnical zones based on rock characteristics were established and design parameters (such as cohesion and angles of internal friction) were determined for the zones. Economic risks mainly arose from the costs of repairing ramps and upper benches damaged due to undercutting. Safety risks resulted from the fact that initially the dump (OB 5), was located about a kilometre away from the pit rim but as mining progressed this dump became part of the pit wall on the footwall.Because the upper part of the pit wall was composed of dump material which was unstable, there was a high likelihood of slope failure. Design slope angles have been recommended based on geotechnical zones and a comprehensive rock characterisation. Slope management strategies have been reinforced by recommending better coordination, frequency and effectiveness of monitoring systems. Corrective measures for different rock slope instabilities have also been recommended. Further research work, through numerical modelling, is recommended to give better insight on slope failure mechanisms of the Nchanga Open Pit mining area.

Subjects/Keywords: Mines and Minerals; Minerals; Geology

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APA (6^th Edition):

Banda, S. U. (2013). Design parameters and management strategies of soil and rock slopes: Nchanga open pit-Konkola copper mines plc. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/2033

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Banda, Sraj Umar. “Design parameters and management strategies of soil and rock slopes: Nchanga open pit-Konkola copper mines plc.” 2013. Thesis, University of Zimbabwe. Accessed March 07, 2021. http://dspace.unza.zm/handle/123456789/2033.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Banda, Sraj Umar. “Design parameters and management strategies of soil and rock slopes: Nchanga open pit-Konkola copper mines plc.” 2013. Web. 07 Mar 2021.

Vancouver:

Banda SU. Design parameters and management strategies of soil and rock slopes: Nchanga open pit-Konkola copper mines plc. [Internet] [Thesis]. University of Zimbabwe; 2013. [cited 2021 Mar 07]. Available from: http://dspace.unza.zm/handle/123456789/2033.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Banda SU. Design parameters and management strategies of soil and rock slopes: Nchanga open pit-Konkola copper mines plc. [Thesis]. University of Zimbabwe; 2013. Available from: http://dspace.unza.zm/handle/123456789/2033

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Namibia

2. Kalili, Liina. Ownership, rights and access to minerals in Namibia: A contemporary legal perspective .

Degree: 2019, University of Namibia

URL: http://hdl.handle.net/11070/2871

► Namibia has a rich mineral heritage, but the larger proportion of these minerals is mined by foreign owned companies. The majority of the Namibian people… (more)

▼ Namibia has a rich mineral heritage, but the larger proportion of these minerals is mined by foreign owned companies. The majority of the Namibian people do not have access to these mineral resources. Thus, the distribution of natural resources in Namibia has been blamed for the high inequality within the Namibian society as foreign investors arguably benefit more from the mining proceeds than locals. Therefore, the unequal distribution and ownership of natural resources can equally impact on the distribution of other forms of wealth in the Namibian society. In a bid to reverse the current status quo, the contemporary legal perspective to the right of ownership, access and distribution of mineral resources in Namibia was developed to support equitable distribution of mineral resources. However, it is evident that, many factors still need to be considered in order to achieve the objective of equitable access, ownership and distribution of mineral resources in Namibia. Thus, emphasizing the need to look at the current challenges Namibia is facing and how to overcome them in the quest for equitable distribution of natural resources. The lack of access, ownership and distribution of mineral resources is not only the result of inadequate technical skills, technology and capacity but also fear of economic downgrades, corruption and absence of a supporting legal framework. As a way of addressing this problem, some countries such as Zimbabwe has learned from South Africa to implement measures to control business fronting, increased their focus on corporate social responsibility and invested in infrastructure development and technology transfer. This study therefore suggests that Namibia allow citizens to take ownership of the country’s mineral resources by advocating more on creating and expanding local skills and expertise, which may positively contribute to local economic growth. Local empowerment as the engine of growth will also minimize inequality and foreign domination of Namibia’s mineral wealth.

Subjects/Keywords: Minerals; Ownership

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APA (6^th Edition):

Kalili, L. (2019). Ownership, rights and access to minerals in Namibia: A contemporary legal perspective . (Thesis). University of Namibia. Retrieved from http://hdl.handle.net/11070/2871

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kalili, Liina. “Ownership, rights and access to minerals in Namibia: A contemporary legal perspective .” 2019. Thesis, University of Namibia. Accessed March 07, 2021. http://hdl.handle.net/11070/2871.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kalili, Liina. “Ownership, rights and access to minerals in Namibia: A contemporary legal perspective .” 2019. Web. 07 Mar 2021.

Vancouver:

Kalili L. Ownership, rights and access to minerals in Namibia: A contemporary legal perspective . [Internet] [Thesis]. University of Namibia; 2019. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11070/2871.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kalili L. Ownership, rights and access to minerals in Namibia: A contemporary legal perspective . [Thesis]. University of Namibia; 2019. Available from: http://hdl.handle.net/11070/2871

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

3. Dube, Thobile Thenjiwe. Measuring the fracture energy of bed breakage using a short impact load cell.

Degree: Image, Centre for Minerals Research, 2017, University of Cape Town

URL: http://hdl.handle.net/11427/25270

► Particle fracture is the elementary process that governs comminution. In industrial machines particle breakage occurs mainly through three mechanisms: impact, abrasion and attrition. Of these… (more)

▼ Particle fracture is the elementary process that governs comminution. In industrial machines particle breakage occurs mainly through three mechanisms: impact, abrasion and attrition. Of these mechanisms, impact breakage is known to be the most basic form of particle size reduction. Comminution devices are highly inefficient, as the energy used for particle breakage relative to that consumed by the equipment is low and reported to be between 1-2 %. As such, understanding the fundamentals of particle fracture is crucial for the development of energy efficient particle size reduction methods. Research done towards investigating particle fracture under impact loading has led to the development of several devices which include the twin pendulum device, drop weight tester, Split Hopkinson Pressure Bar, Rotary Breakage Tester and the Short Impact Load Cell. In this study the Short Impact Load Cell (SILC) was used to conduct bed breakage experiments on partially confined particles. Breakage tests using this device were conducted by vertically releasing a steel ball of known mass onto a bed of particles from a known height. The bed rested on a steel rod which was fitted with strain gauges to measure the particle response to impact loading. Tests were conducted on two ores, blue stone and UG2, to investigate the effect of three variables: steel ball mass, drop height and bed depth on the breakage behaviour of particles. The effect of each variable was investigated by evaluating the peak forces obtained, the particle fracture energy and the degree of particle breakage attained. For both ores it was found that the peak force increased linearly with increasing steel ball mass and drop height, and it was found that the drop height had a greater effect on the peak force than the steel ball mass. The maximum peak forces were obtained at one layer of particles and increasing the bed depth generally led to a reduction in the peak force. An exponential relationship was found between the peak force and bed depth, where the peak force decreased with increasing bed depth. It was found that the blue stone particles did not break at the range of input energies used in this work, therefore no fracture energy results were reported for blue stone. The fracture energy values for UG2 were low, where the maximum energy used for particle fracture was 2.7 % of the input energy. There was no direct correlation between the fracture energy and the steel ball mass, drop height and bed depth; however it was found that the bed depth had a larger effect on the fracture energy compared to both the steel ball mass and drop height. The greatest amount of energy used for fracture was generally obtained at the largest input energies using the 357 and 510 g balls. The optimum drop height which resulted in the highest fracture energy was generally found to be either 240 or 300 mm. A bed depth of five layers was found to be the optimum bed depth that allowed for the highest amount of energy to be utilized for breakage. No breakage results were obtained for blue… Advisors/Committee Members: Bbosa, Lawrence Sidney (advisor).

Subjects/Keywords: Minerals Research

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APA (6^th Edition):

Dube, T. T. (2017). Measuring the fracture energy of bed breakage using a short impact load cell. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/25270

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dube, Thobile Thenjiwe. “Measuring the fracture energy of bed breakage using a short impact load cell.” 2017. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/25270.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dube, Thobile Thenjiwe. “Measuring the fracture energy of bed breakage using a short impact load cell.” 2017. Web. 07 Mar 2021.

Vancouver:

Dube TT. Measuring the fracture energy of bed breakage using a short impact load cell. [Internet] [Thesis]. University of Cape Town; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/25270.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dube TT. Measuring the fracture energy of bed breakage using a short impact load cell. [Thesis]. University of Cape Town; 2017. Available from: http://hdl.handle.net/11427/25270

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

4. Shabalala, Ntokozo Zinhle Precious. Rheological effects on gas dispersion in a pilot scale mechanical flotation cell.

Degree: Image, Centre for Minerals Research, 2013, University of Cape Town

URL: http://hdl.handle.net/11427/16918

► Froth flotation is a separation method used for the beneficiation of a considerable portion of the world's mineral ores. The majority of flotation occurs in… (more)

▼ Froth flotation is a separation method used for the beneficiation of a considerable portion of the world's mineral ores. The majority of flotation occurs in mechanical flotation cells, where effective gas dispersion is a primary requirement for particle-bubble contacting. Due to the mineralogical complexity of ores, it is required that particles be ground even finer to liberate valuable minerals. Mining operations tend to run flotation circuits at fairly high solids concentrations in order to maximise residence time, accommodate higher tonnages and limit water consumption. Mineral slurries processed at fine particle sizes and high solids concentrations have been shown to exhibit non-Newtonian rheological behaviour. The effect of slurry rheology on gas dispersion in a 100 litre mechanical flotation cell was investigated by varying the solids concentration. The study was conducted using kaolin, Bindura nickel and Platreef slurries. All three ores displayed typical non- Newtonian rheological behaviour where the slurry yield stress and viscosity increased exponentially with solids concentration. Bubble size varied from 0.55 to 1.10 mm for all the ores tested. At low solids concentration bubble size was found to decrease with impeller speed, a characteristic trend that was expected. At moderate solids concentrations bubble size was found to either increase/remain relatively constant with impeller speed; this trend was also expected. Unexpectedly, at the highest solids concentration, a dramatic decrease in bubble size was observed. This unexpected drop in bubble size was attributed to slurry rheology. It was also observed that there was a slight increase in bubble size at the highest solids concentration with increasing impeller speed. This increase was attributed to a trade-off relationship between the rheology of the slurries and the existing hydrodynamics (as a result of the rotating impeller). Gas hold-up varied from 2 to 15% across all the ores tested. At low solids concentrations gas hold-up increased with impeller speed as expected. At moderate solids concentration gas hold-up was viewed to either increase/remain relatively constant with impeller speed. A significant drop in gas hold-up was observed at the highest solids concentration. The gas hold-up however still increased with impeller speed albeit at a lower rate at the highest solids concentrations. This drop in gas hold- up at the highest solids concentration (along with the decrease in bubble size) was attributed to the effect of slurry rheology. At high solids concentrations, all three slurries (kaolin, Bindura nickel and Platreef) exhibit non-Newtonian behaviour illustrated by means of high viscosities and yield stresses. High viscosities result in turbulence damping in the cell which inhibits bubble break-up, resulting in larger bubbles and correspondingly lower gas hold-up. It was concluded in this study that the yield stress is the dominant rheological property due to the significant changes observed with increasing solids concentration. High yield… Advisors/Committee Members: Deglon, David A (advisor), Harris, Martin (advisor).

Subjects/Keywords: Minerals Research

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APA (6^th Edition):

Shabalala, N. Z. P. (2013). Rheological effects on gas dispersion in a pilot scale mechanical flotation cell. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/16918

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shabalala, Ntokozo Zinhle Precious. “Rheological effects on gas dispersion in a pilot scale mechanical flotation cell.” 2013. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/16918.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shabalala, Ntokozo Zinhle Precious. “Rheological effects on gas dispersion in a pilot scale mechanical flotation cell.” 2013. Web. 07 Mar 2021.

Vancouver:

Shabalala NZP. Rheological effects on gas dispersion in a pilot scale mechanical flotation cell. [Internet] [Thesis]. University of Cape Town; 2013. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/16918.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shabalala NZP. Rheological effects on gas dispersion in a pilot scale mechanical flotation cell. [Thesis]. University of Cape Town; 2013. Available from: http://hdl.handle.net/11427/16918

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

5. Tadie, Margreth. An electrochemical investigation of platinum group minerals.

Degree: Image, Centre for Minerals Research, 2015, University of Cape Town

URL: http://hdl.handle.net/11427/15748

► The Bushveld complex is the largest ore body in the world hosting platinum group elements (PGEs). It is a stratified orebody with three major reefs… (more)

Subjects/Keywords: Minerals Research

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APA (6^th Edition):

Tadie, M. (2015). An electrochemical investigation of platinum group minerals. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/15748

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tadie, Margreth. “An electrochemical investigation of platinum group minerals.” 2015. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/15748.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tadie, Margreth. “An electrochemical investigation of platinum group minerals.” 2015. Web. 07 Mar 2021.

Vancouver:

Tadie M. An electrochemical investigation of platinum group minerals. [Internet] [Thesis]. University of Cape Town; 2015. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/15748.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tadie M. An electrochemical investigation of platinum group minerals. [Thesis]. University of Cape Town; 2015. Available from: http://hdl.handle.net/11427/15748

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

6. Edwards, Garren Chad. Investigation of operating parameters in a vertical stirred mill.

Degree: Image, Centre for Minerals Research, 2016, University of Cape Town

URL: http://hdl.handle.net/11427/20442

► Due to the depletion of coarser grained ores, more mineralogically complex ores are being treated. These complex ores usually have finer grained valuable minerals. Liberation… (more)

Subjects/Keywords: Minerals Research

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APA (6^th Edition):

Edwards, G. C. (2016). Investigation of operating parameters in a vertical stirred mill. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/20442

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Edwards, Garren Chad. “Investigation of operating parameters in a vertical stirred mill.” 2016. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/20442.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Edwards, Garren Chad. “Investigation of operating parameters in a vertical stirred mill.” 2016. Web. 07 Mar 2021.

Vancouver:

Edwards GC. Investigation of operating parameters in a vertical stirred mill. [Internet] [Thesis]. University of Cape Town; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/20442.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Edwards GC. Investigation of operating parameters in a vertical stirred mill. [Thesis]. University of Cape Town; 2016. Available from: http://hdl.handle.net/11427/20442

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester

7. Bryant, Yazmina Mercedes. Interactions of Polycyclic Aromatic Hydrocarbons with Mineral Surfaces.

Degree: 2011, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:132208

► The toxicity and ubiquitousness of PAHs within different terrestrial environments has been an increasing cause for concern amongst environmental scientists in the last decades, in… (more)

▼ The toxicity and ubiquitousness of PAHs within different terrestrial environments has been an increasing cause for concern amongst environmental scientists in the last decades, in particular regarding their transport within the soil. In an attempt to understand the role of pure inorganic phases in PAH-mobility; experiments exposing mineral soil components with low organic matter content to a PAH-representative were carried out. The systems consisted of four different mineral phases (quartz sand, hematite, iron coated quartz sand and montmorillonite) which were individually exposed to naphthalene in electrolyte solutions prepared at increasing ionic strengths (NaNO3: 0.001 M; 0.01 M; 0.1 M) and pH (4.0 and 5.5). All experiments were conducted over at 24 reaction intervals and at ambient temperature conditions.Mineral geosorbents are traditionally known to be poor PAH-scavengers; in particular when compared to organic, high surface area materials such as activated carbons. On this basis, a preliminary validation experiment (Proof of Concept Experiment) was conducted to test the sensitivity of the selected extraction method (SPME) under complete uptake (activated carbon) and very low uptake (quartz sand) conditions. By extracting and analysing the supernatant after 24 hr of exposure of both sorbents to naphthalene under identical conditions it was concluded that SPME was a feasible extraction technique, yielding good reproducibility (n=3, inter-day RSD%= 11.18% ) even at very low PAH concentrations (0.2 µg / L). The final concentration of naphthalene in the sample supernatant after 24 hours was determined by GC-FID. All samples were extracted using the Solid Phase Microextraction method developed during the Proof of Concept which allowed the rapid extraction of naphthalene in the headspace HS-SPME (extraction time = 3 minutes) using temperature control and ultrasonication as means of agitation. Each sample set included triplicates of blanks and samples as well as calibration standards (in duplicate where possible)Out of the four minerals, only quartz sand and hematite showed a slight tendency towards naphthalene removal from solution; a finding which correlated well with increasing ionic strength. The other two minerals did not show any such trend and the results were deemed inconclusive. In regards to the results for quartz and hematite; the detected uptake was found to be below the sensitivity of the current SPME extraction method according to the error analysis carried out by comparing the sample and blank means whilst accounting for error equal to 1. The overlapping of both means in the majority of the samples indicated that both averages were too close to be accurately resolved (due to very low naphthalene uptake). Modifications to the SPME method could improve the reproducibility and decrease the spread of the data; however, this measure would only guarantee higher statistical confidence (95 %) and not higher naphthalene uptake by these minerals. These observations lead to the conclusion that naphthalene was… Advisors/Committee Members: GIZE, ANDREW AP, WOGELIUS, ROY RA, Craig, William, Gize, Andrew, Wogelius, Roy.

Subjects/Keywords: PAH; SPME; minerals

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bryant, Y. M. (2011). Interactions of Polycyclic Aromatic Hydrocarbons with Mineral Surfaces. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:132208

Chicago Manual of Style (16^th Edition):

Bryant, Yazmina Mercedes. “Interactions of Polycyclic Aromatic Hydrocarbons with Mineral Surfaces.” 2011. Doctoral Dissertation, University of Manchester. Accessed March 07, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:132208.

MLA Handbook (7^th Edition):

Bryant, Yazmina Mercedes. “Interactions of Polycyclic Aromatic Hydrocarbons with Mineral Surfaces.” 2011. Web. 07 Mar 2021.

Vancouver:

Bryant YM. Interactions of Polycyclic Aromatic Hydrocarbons with Mineral Surfaces. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Mar 07]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:132208.

Council of Science Editors:

Bryant YM. Interactions of Polycyclic Aromatic Hydrocarbons with Mineral Surfaces. [Doctoral Dissertation]. University of Manchester; 2011. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:132208

Uppsala University

8. Hjeltström, Anna. Copper minerals under the microscope.

Degree: Earth Sciences, 2015, Uppsala University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-243049

► From many perspectives copper is a very important metal for the modern society. It can be found in everything from jewellery to electronics. For… (more)

Subjects/Keywords: Copper; Minerals; Microscope

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APA (6^th Edition):

Hjeltström, A. (2015). Copper minerals under the microscope. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-243049

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hjeltström, Anna. “Copper minerals under the microscope.” 2015. Thesis, Uppsala University. Accessed March 07, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-243049.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hjeltström, Anna. “Copper minerals under the microscope.” 2015. Web. 07 Mar 2021.

Vancouver:

Hjeltström A. Copper minerals under the microscope. [Internet] [Thesis]. Uppsala University; 2015. [cited 2021 Mar 07]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-243049.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hjeltström A. Copper minerals under the microscope. [Thesis]. Uppsala University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-243049

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Zambia

9. Bonsu, Winfred Assibey. Pricing and marketing of minerals from small-scale mining operations: The case of Gemstones .

Degree: 2012, University of Zambia

URL: http://hdl.handle.net/123456789/1899

► This study analyses the factors which are involved in the determination of prices and marketing of mineral commodities.Its emphasis is on gemstones. The experience of… (more)

Subjects/Keywords: Minerals- - Marketing; Precious stones- - Marketing

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APA (6^th Edition):

Bonsu, W. A. (2012). Pricing and marketing of minerals from small-scale mining operations: The case of Gemstones . (Thesis). University of Zambia. Retrieved from http://hdl.handle.net/123456789/1899

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bonsu, Winfred Assibey. “Pricing and marketing of minerals from small-scale mining operations: The case of Gemstones .” 2012. Thesis, University of Zambia. Accessed March 07, 2021. http://hdl.handle.net/123456789/1899.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bonsu, Winfred Assibey. “Pricing and marketing of minerals from small-scale mining operations: The case of Gemstones .” 2012. Web. 07 Mar 2021.

Vancouver:

Bonsu WA. Pricing and marketing of minerals from small-scale mining operations: The case of Gemstones . [Internet] [Thesis]. University of Zambia; 2012. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/123456789/1899.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bonsu WA. Pricing and marketing of minerals from small-scale mining operations: The case of Gemstones . [Thesis]. University of Zambia; 2012. Available from: http://hdl.handle.net/123456789/1899

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

10. Brummer, Fara Ann. Mineral assessment of open range livestock production on The Warm Springs Indian Reservation.

Degree: M. Ag., Animal Science, 2009, Oregon State University

URL: http://hdl.handle.net/1957/12953

► The Warm Springs Reservation is located in central Oregon. Livestock production consists of beef (commercial with an Angus, Horned Hereford base) and roping (Corriente and… (more)

▼ The Warm Springs Reservation is located in central Oregon. Livestock production consists of beef (commercial with an Angus, Horned Hereford base) and roping (Corriente and Longhorn) cattle and horses that forage most of the year on the open range within reservation boundaries. Forage consists of annual and perennial grasses and shrubs, with winter feed supplementation on some cattle operations. Calving season tends to be year round, with the concentration of managed calving during the early spring. Calf crops vary from 40% to 95%. Conversations with tribal producers indicate a past history of retained placentas and reproductive issues, indicating that mineral deficiencies may be present. Previous blood samples on horses and cattle have documented low levels of selenium. An analysis of blood serum mineral levels in breeding cows was conducted, along with the oral history from two tribal producers, in order to assess mineral differences and potential calf crop differences in cattle. Three herds of ten breeding cows each were tested in the fall of 2007. The tested herds were: I) crossbred Angus with mineral supplementation (AxS), II) crossbred Angus without mineral supplementation (AxU), and III), and crossbred Longhorn without mineral supplementation (LxU). Plant samples were also collected in October 2008 and May 2009 to determine mineral content of forages within the study site area. Results demonstrated that there was a significant difference in serum selenium content between AxS and AxU, and a difference in calf crops. There was no significant difference in serum selenium content of AxU and LxU, although there was a difference in calf crops. Plant mineral levels varied by species and season, but were consistently inadequate in sodium, zinc, selenium, fall phosphorus, and iodine. A blood analysis of range cattle, followed with the appropriate mineral supplement can address local deficiencies and potentially contribute to overall health and productivity of range livestock at Warm Springs. Advisors/Committee Members: Mueller, Chad J. (advisor), Gow, Laura R. (committee member).

Subjects/Keywords: mineral; Minerals in nutrition

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APA (6^th Edition):

Brummer, F. A. (2009). Mineral assessment of open range livestock production on The Warm Springs Indian Reservation. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/12953

Chicago Manual of Style (16^th Edition):

Brummer, Fara Ann. “Mineral assessment of open range livestock production on The Warm Springs Indian Reservation.” 2009. Masters Thesis, Oregon State University. Accessed March 07, 2021. http://hdl.handle.net/1957/12953.

MLA Handbook (7^th Edition):

Brummer, Fara Ann. “Mineral assessment of open range livestock production on The Warm Springs Indian Reservation.” 2009. Web. 07 Mar 2021.

Vancouver:

Brummer FA. Mineral assessment of open range livestock production on The Warm Springs Indian Reservation. [Internet] [Masters thesis]. Oregon State University; 2009. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1957/12953.

Council of Science Editors:

Brummer FA. Mineral assessment of open range livestock production on The Warm Springs Indian Reservation. [Masters Thesis]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/12953

University of Alberta

11. Zheng, Limin. Characterization of Clay Minerals and Kerogen in Alberta Oil Sands Geological End Members.

Degree: MS, Department of Chemical and Materials Engineering, 2013, University of Alberta

URL: https://era.library.ualberta.ca/files/6h440t89k

► The high degree of variability of oil sands ores can be attributed to a mixture of different geological end members, i.e., estuarine sand, estuarine clay,… (more)

Subjects/Keywords: Oil Sands; Clay Minerals; Kerogen

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APA (6^th Edition):

Zheng, L. (2013). Characterization of Clay Minerals and Kerogen in Alberta Oil Sands Geological End Members. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/6h440t89k

Chicago Manual of Style (16^th Edition):

Zheng, Limin. “Characterization of Clay Minerals and Kerogen in Alberta Oil Sands Geological End Members.” 2013. Masters Thesis, University of Alberta. Accessed March 07, 2021. https://era.library.ualberta.ca/files/6h440t89k.

MLA Handbook (7^th Edition):

Zheng, Limin. “Characterization of Clay Minerals and Kerogen in Alberta Oil Sands Geological End Members.” 2013. Web. 07 Mar 2021.

Vancouver:

Zheng L. Characterization of Clay Minerals and Kerogen in Alberta Oil Sands Geological End Members. [Internet] [Masters thesis]. University of Alberta; 2013. [cited 2021 Mar 07]. Available from: https://era.library.ualberta.ca/files/6h440t89k.

Council of Science Editors:

Zheng L. Characterization of Clay Minerals and Kerogen in Alberta Oil Sands Geological End Members. [Masters Thesis]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/6h440t89k

Cornell University

12. Wray, James. High-Resolution Studies Of Aqueous Environments On Ancient Mars.

Degree: PhD, Astronomy, 2011, Cornell University

URL: http://hdl.handle.net/1813/33542

► Hydrated minerals on the surface of Mars record past aqueous conditions and permit assessment of whether, where, and when the planet may have been habitable.… (more)

▼ Hydrated minerals on the surface of Mars record past aqueous conditions and permit assessment of whether, where, and when the planet may have been habitable. Both phyllosilicates (e.g., clays) and hydrated sulfate minerals were recently identified via orbital near-infrared spectroscopy. This work uses the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) and High Resolution Imaging Science Experiment (HiRISE) to characterize these and other aqueous mineral deposits, determining their composition, stratigraphy, and morphology. These properties and observations from other Mars-orbiting instruments allow formulation and testing of hypotheses on how Martian environments varied across space and time. The Mawrth Vallis region hosts the largest areal exposure of phyllosilicates, and CRISM spectral maps show these are compositionally stratified, with Al-clays overlying Fe/Mg-clays throughout the region. Geometric measurements reveal that the Al-clay horizon traces the Mawrth Vallis topography, implying that the Al-clays postdate this channel and may have formed via surface weathering. CRISM data further reveal the Ca-sulfate bassanite in outcrops underlying Fe/Mg-clays. Each hydrated unit exhibits ubiquitous meter-scale polygons or other fracture patterns, which correlate with composition. A CRISM-based survey of Mars' ancient southern highlands uncovers numerous aqueous deposits undetected at lower resolution. Fe/Mg-phyllosilicates are widespread, in some cases exposed by craters and elsewhere spanning the intercrater plains. Sulfates occur at higher latitudes than those observed previously, and are associated with phyllosilicates in some locations. Elsewhere, phyllosilicates co-occur with other hydrated silicates or putative chlorides. Fe/Ca-carbonate is also identified for the first time. These diverse mineral assemblages likely reflect diverse aqueous conditions. Columbus crater and others in Terra Sirenum contain layered deposits with diverse clays and sulfates. Digital elevation models, crater counts, thermal emission spectra, and hydrologic modeling results are added to CRISM and HiRISE image analyses to test several different hypotheses for these deposits, including their possible formation in a deep lake within Columbus crater during the Late Noachian Epoch. CRISM analysis of Endeavour crater in Meridiani Planum reveals Fe/Mgsmectite clays in its rim and hydrated sulfates on the adjacent plains. Opportunity is currently driving toward these locations, which may provide the first ground truth of hydrated minerals detected from Mars orbit. Advisors/Committee Members: Squyres, Steven Weldon (chair), Lloyd, James (committee member), Isacks, Bryan Leonard (committee member), Bell, James F (committee member), Kay, Robert Woodbury (committee member).

Subjects/Keywords: Mars; Remote sensing; Hydrated minerals

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APA (6^th Edition):

Wray, J. (2011). High-Resolution Studies Of Aqueous Environments On Ancient Mars. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/33542

Chicago Manual of Style (16^th Edition):

Wray, James. “High-Resolution Studies Of Aqueous Environments On Ancient Mars.” 2011. Doctoral Dissertation, Cornell University. Accessed March 07, 2021. http://hdl.handle.net/1813/33542.

MLA Handbook (7^th Edition):

Wray, James. “High-Resolution Studies Of Aqueous Environments On Ancient Mars.” 2011. Web. 07 Mar 2021.

Vancouver:

Wray J. High-Resolution Studies Of Aqueous Environments On Ancient Mars. [Internet] [Doctoral dissertation]. Cornell University; 2011. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1813/33542.

Council of Science Editors:

Wray J. High-Resolution Studies Of Aqueous Environments On Ancient Mars. [Doctoral Dissertation]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/33542

13. Kistner, Madison. Effects of molybdenum water concentration on feedlot performance, tissue mineral concentration, and carcass quality of feedlot steers, The.

Degree: MS(M.S.), Animal Sciences, 2017, Colorado State University

URL: http://hdl.handle.net/10217/181335

► Thirty cross-bred steers (initial BW 375 ±37.2, replicate 1; and 535.0 ± 39.4 kg, replicate 2) were utilized to investigate the effects of Mo water… (more)

▼ Thirty cross-bred steers (initial BW 375 ±37.2, replicate 1; and 535.0 ± 39.4 kg, replicate 2) were utilized to investigate the effects of Mo water concentration on performance, carcass characteristics, and mineral status of feedlot steers fed a growing and finishing diet for 151 and 112 d for replicate 1 and replicate 2, respectively. The experimental design was a randomized complete block design. Steers were blocked by weight and then divided into 2 weight block replicates each consisting of 15 steers. Steers were randomly assigned within block to one of 5 treatments (3 pens/treatment; 1 steer/ pen; 2 replicates/treatment). Water treatments consisted of: 1) 0.0 µg, 2) 160 µg, 3) 320 µg 4) 480 µg Mo/L, and 5) 960 µg of supplemental Mo/L added as Na2MoO4 to the drinking water. Steers were housed in individual pens that contained individual 265 L water tanks for monitoring water intake. Daily water intake was recorded for each steer. Steers were individually weighed on 2 consecutive days at the beginning and end of the experiment and interim weights and jugular blood samples were obtained every 28 d. Liver biopsies were obtained on d0 and 84 from each steers. Steers were transported to a commercial abattoir, slaughtered, and individual carcass data and liver samples were collected. Initial BW was used as a covariate for statistical analysis of the data and significance was determined at P ≤ 0.05. No differences were observed for final BW (P ≤ 0.98). Overall ADG, DMI, feed efficiency and water intake were similar across treatments. Hot carcass weight, dressing percentage, yield grade, LMA, adjusted fat thickness, KPH, and marbling scores were similar across treatments. Liver and plasma Cu, Mo, and Zn concentrations were similar across treatments. These data indicate that water Mo concentration had no impact on performance, mineral status, water intake, and carcass characteristics in feedlot steers fed a high concentrate diet. Advisors/Committee Members: Engle, Terry (advisor), Wagner, John J. (advisor), Holt, Timothy N. (committee member).

Subjects/Keywords: minerals; water quality; molybdenum; cattle

1 more image…

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APA (6^th Edition):

Kistner, M. (2017). Effects of molybdenum water concentration on feedlot performance, tissue mineral concentration, and carcass quality of feedlot steers, The. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/181335

Chicago Manual of Style (16^th Edition):

Kistner, Madison. “Effects of molybdenum water concentration on feedlot performance, tissue mineral concentration, and carcass quality of feedlot steers, The.” 2017. Masters Thesis, Colorado State University. Accessed March 07, 2021. http://hdl.handle.net/10217/181335.

MLA Handbook (7^th Edition):

Kistner, Madison. “Effects of molybdenum water concentration on feedlot performance, tissue mineral concentration, and carcass quality of feedlot steers, The.” 2017. Web. 07 Mar 2021.

Vancouver:

Kistner M. Effects of molybdenum water concentration on feedlot performance, tissue mineral concentration, and carcass quality of feedlot steers, The. [Internet] [Masters thesis]. Colorado State University; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10217/181335.

Council of Science Editors:

Kistner M. Effects of molybdenum water concentration on feedlot performance, tissue mineral concentration, and carcass quality of feedlot steers, The. [Masters Thesis]. Colorado State University; 2017. Available from: http://hdl.handle.net/10217/181335

Nelson Mandela Metropolitan University

14. Masina, Colani John. Structural analysis of synthetic ferrihydrite nanoparticles and its reduction in a hydrogen atmosphere.

Degree: PhD, Faculty of Science, 2013, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/d1020796

► Ferrihydrite (FHYD), a nanocrystalline material has long been described as a poorly crystalline disordered mineral mainly due to its small crystal size which is typically… (more)

▼ Ferrihydrite (FHYD), a nanocrystalline material has long been described as a poorly crystalline disordered mineral mainly due to its small crystal size which is typically 2−6 𝑛𝑚. The three-dimensional structure of the mineral has long been described by a multi-phase structural model that consists of Fe3+ only in octahedral (Oh) coordination. In this model ferrihydrite is described as a mixture of two major phases (akaganeite/goethite-like f-phase and feroxyhite-like d-phase) and a minor ultradispersed nanohematite phase. This model has been recently challenged and a new, single-phase model was proposed, having a basic structural motif closely related to the Baker-Figgs δ-Keggin cluster and is isostructural with the mineral akdalaite, Al10O14(OH)2. In its ideal form, the proposed new structure of FHYD consist of 80 % Oh and 20 % tetrahedral (Td) Fe3+ polyhedra which can be adequately described by a single-domain model with the hexagonal spacegroup 𝑃63𝑚𝑐 and unit cell dimensions 𝑎=5.95 Å and 𝑐=9.06 Å. In this study, nanoparticles of 2-line FHYD (FHYD2), 2-line FHYD deposited onto SiO2 (FHYD2/SiO2) and 6-line FHYD (FHYD6) synthesised using rapid hydrolysis of Fe(NO3)3.9H2O solutions were characterized using X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), Mössbauer spectroscopy (MS) as well as magnetization and magnetic susceptibility measurements. The coordination environment of iron atoms in the structure of FHYD was investigated using TEM and MS. The thermal transformation of FHYD nanoparticles was monitored through changes in the magnetization as a function of temperature and the reduction behaviour in hydrogen environment was studied using temperature programmed reduction (TPR), in-situ XRD and MS. Electron diffraction, TEM/ scanning TEM (STEM) imaging, and electron energy loss (EELS) measurements were carried out on three different microscopes viz. JEOL JEM-2100 LaB6 TEM, aberration corrected Schottky-FEG JEOL JEM-ARM200F HRTEM and cold-FEG Zeiss SESAM TEM. EELS studies were concentrated mainly on the iron 𝐿-edge of FHYD and iron oxides reference spectra with well known crystal structures. The iron oxide Fe 𝐿-edge is usually characterized by two intense sharp peaks termed “white lines”. The fine structures introduced by the crystal field effect on the 𝐿- edge contain information that is highly specific to the Fe3+ site symmetry. Advisors/Committee Members: Neethling, J H Prof, Lodya, L Dr.

Subjects/Keywords: Ferric hydroxides; Minerals – Analysis; Nanoparticles

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APA (6^th Edition):

Masina, C. J. (2013). Structural analysis of synthetic ferrihydrite nanoparticles and its reduction in a hydrogen atmosphere. (Doctoral Dissertation). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/d1020796

Chicago Manual of Style (16^th Edition):

Masina, Colani John. “Structural analysis of synthetic ferrihydrite nanoparticles and its reduction in a hydrogen atmosphere.” 2013. Doctoral Dissertation, Nelson Mandela Metropolitan University. Accessed March 07, 2021. http://hdl.handle.net/10948/d1020796.

MLA Handbook (7^th Edition):

Masina, Colani John. “Structural analysis of synthetic ferrihydrite nanoparticles and its reduction in a hydrogen atmosphere.” 2013. Web. 07 Mar 2021.

Vancouver:

Masina CJ. Structural analysis of synthetic ferrihydrite nanoparticles and its reduction in a hydrogen atmosphere. [Internet] [Doctoral dissertation]. Nelson Mandela Metropolitan University; 2013. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10948/d1020796.

Council of Science Editors:

Masina CJ. Structural analysis of synthetic ferrihydrite nanoparticles and its reduction in a hydrogen atmosphere. [Doctoral Dissertation]. Nelson Mandela Metropolitan University; 2013. Available from: http://hdl.handle.net/10948/d1020796

Texas A&M University

15. Dickson, Emily Claire. Effect of Complexed Trace Mineral Supplementation on Joint Health in Young, Exercising Horses.

Degree: MS, Animal Science, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/173410

► Osteoarthritis has been named one of the major causes of lameness in horses, and remains one of the main reasons for performance loss. Nutritional interventions… (more)

Subjects/Keywords: Equine; Trace minerals; Cartilage

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APA (6^th Edition):

Dickson, E. C. (2018). Effect of Complexed Trace Mineral Supplementation on Joint Health in Young, Exercising Horses. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173410

Chicago Manual of Style (16^th Edition):

Dickson, Emily Claire. “Effect of Complexed Trace Mineral Supplementation on Joint Health in Young, Exercising Horses.” 2018. Masters Thesis, Texas A&M University. Accessed March 07, 2021. http://hdl.handle.net/1969.1/173410.

MLA Handbook (7^th Edition):

Dickson, Emily Claire. “Effect of Complexed Trace Mineral Supplementation on Joint Health in Young, Exercising Horses.” 2018. Web. 07 Mar 2021.

Vancouver:

Dickson EC. Effect of Complexed Trace Mineral Supplementation on Joint Health in Young, Exercising Horses. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1969.1/173410.

Council of Science Editors:

Dickson EC. Effect of Complexed Trace Mineral Supplementation on Joint Health in Young, Exercising Horses. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/173410

University of Johannesburg

16. Boyum, Karin. A study of clay bodies and glazes for the South African studio potter.

Degree: 2014, University of Johannesburg

URL: http://hdl.handle.net/10210/11757

►

M.Tech. (Ceramics)

The research project attempts to fill a void by assembling data dealing with a comprehensive range of South African clay and glaze materials,… (more)

Subjects/Keywords: Ceramic materials; Glazes; Clay minerals

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APA (6^th Edition):

Boyum, K. (2014). A study of clay bodies and glazes for the South African studio potter. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/11757

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Boyum, Karin. “A study of clay bodies and glazes for the South African studio potter.” 2014. Thesis, University of Johannesburg. Accessed March 07, 2021. http://hdl.handle.net/10210/11757.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Boyum, Karin. “A study of clay bodies and glazes for the South African studio potter.” 2014. Web. 07 Mar 2021.

Vancouver:

Boyum K. A study of clay bodies and glazes for the South African studio potter. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10210/11757.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Boyum K. A study of clay bodies and glazes for the South African studio potter. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/11757

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Johannesburg

17. Chemaly, Cecilia Tereza. The knowledge and consumption of calcium, cereals and osteoporosis in white adolescent girls in Gauteng, South Africa.

Degree: 2014, University of Johannesburg

URL: http://hdl.handle.net/10210/11474

►

M.Tech. (Food and Beverage Management)

Calcium is a nutrient of concern for adolescents due to the high Incidence of osteoporosis. The adolescent growth spurt combined… (more)

Subjects/Keywords: Minerals in human nutrition; Osteoporosis

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APA (6^th Edition):

Chemaly, C. T. (2014). The knowledge and consumption of calcium, cereals and osteoporosis in white adolescent girls in Gauteng, South Africa. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/11474

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chemaly, Cecilia Tereza. “The knowledge and consumption of calcium, cereals and osteoporosis in white adolescent girls in Gauteng, South Africa.” 2014. Thesis, University of Johannesburg. Accessed March 07, 2021. http://hdl.handle.net/10210/11474.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chemaly, Cecilia Tereza. “The knowledge and consumption of calcium, cereals and osteoporosis in white adolescent girls in Gauteng, South Africa.” 2014. Web. 07 Mar 2021.

Vancouver:

Chemaly CT. The knowledge and consumption of calcium, cereals and osteoporosis in white adolescent girls in Gauteng, South Africa. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10210/11474.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chemaly CT. The knowledge and consumption of calcium, cereals and osteoporosis in white adolescent girls in Gauteng, South Africa. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/11474

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University

18. Mihiret, Kassa Alemu. The Effect of Natural Fermentation on Some Antinutritional Factors, Minerals, Proximate Composition and Sensory Characteristics in Sorghum Based Weaning Food .

Degree: 2012, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/4019

► The effect of natural fermentation of two sorghum cultivars on antinutritional factors (tannin and phytate), minerals (Ca, Fe, Zn and P), proximate analysis and sensory… (more)

▼ The effect of natural fermentation of two sorghum cultivars on antinutritional factors (tannin and phytate), minerals (Ca, Fe, Zn and P), proximate analysis and sensory characteristics were investigated. Flours from both cultivars were fermented at room temperature (20- 230 C) for 0, 12, 24, 36 and 48h at a concentration of 1:3 dilutions (w/v). TTA and pH were determined immediately at the end of each fermentation period and the samples were dried at 70o C in air oven drier for 36h. Fermentation caused an increase in the protein, TTA, energy content and improved mineral bioavailability and decrease in fat, carbohydrate, ash, crude fiber, viscosity, antinutritional factors, phytate: mineral molar ratios and pH of sorghum flour. The bioavailability of zinc (phytate: zinc molar ratio <15) after 24-48h fermentation of Gobiye cultivar was found to meet the critical limit. The bioavailability of calcium and iron was below the critical limit in all the samples analyzed; phytate: calcium molar ratio >0.24 and phytate: Fe molar ratio > 0.15. However calcium had no effect on the absorption of zinc ([Calcium x Phytate]: [Zinc] <0.5 millimolar).When the samples were subjected to sensory evaluation, there was no significant difference (p<0.05) in the appearance and aroma of the unfermented and gruel samples fermentation for 12h. The panelists however noted that appearance, aroma, texture, taste and overall acceptability of the gruel prepared from sorghum flour that was subjected to 48h fermentation differ from others and least acceptable. Taste and overall acceptability decreased significantly (p<0.05) along with period of fermentation. Ethiopian weaning mothers should be encouraged to prepare 12 to 24h fermented sorghum based weaning gruels that may blend with either legumes or milk powder by adding some amount of sugar. Further research on cereal based fermented weaning foods needs to be conducted in Ethiopia. Researchers should also take into consideration the incorporation of phytase enzymes into cereal plants to enhance the nutritional value in addition to yield improvement by the application of biotechnology. Advisors/Committee Members: Kelebessa urga (advisor).

Subjects/Keywords: Factors; Composition; Sensory; Proximate; Minerals

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APA (6^th Edition):

Mihiret, K. A. (2012). The Effect of Natural Fermentation on Some Antinutritional Factors, Minerals, Proximate Composition and Sensory Characteristics in Sorghum Based Weaning Food . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/4019

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mihiret, Kassa Alemu. “The Effect of Natural Fermentation on Some Antinutritional Factors, Minerals, Proximate Composition and Sensory Characteristics in Sorghum Based Weaning Food .” 2012. Thesis, Addis Ababa University. Accessed March 07, 2021. http://etd.aau.edu.et/dspace/handle/123456789/4019.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mihiret, Kassa Alemu. “The Effect of Natural Fermentation on Some Antinutritional Factors, Minerals, Proximate Composition and Sensory Characteristics in Sorghum Based Weaning Food .” 2012. Web. 07 Mar 2021.

Vancouver:

Mihiret KA. The Effect of Natural Fermentation on Some Antinutritional Factors, Minerals, Proximate Composition and Sensory Characteristics in Sorghum Based Weaning Food . [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2021 Mar 07]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4019.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mihiret KA. The Effect of Natural Fermentation on Some Antinutritional Factors, Minerals, Proximate Composition and Sensory Characteristics in Sorghum Based Weaning Food . [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4019

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado State University

19. Berrett, Cari J. Influence of trace mineral concentration and source on yearling feedlot steer performance, carcass characteristics, and trace mineral status.

Degree: MS(M.S.), Animal Sciences, 2013, Colorado State University

URL: http://hdl.handle.net/10217/80206

► Effects of trace mineral (TM) concentration and source on yearling feedlot steer performance, carcass characteristics, and liver TM status, were determined utilizing 360 crossbred steers… (more)

▼ Effects of trace mineral (TM) concentration and source on yearling feedlot steer performance, carcass characteristics, and liver TM status, were determined utilizing 360 crossbred steers (initial BW=350 ± 4.0 kg). Steers were blocked by initial BW and randomly assigned to one of 4 treatments (10pens/treatment; 9 hd/pen). Treatments consisted of: 1) negative control (NC), no supplemental TM (basal diet contained 7.65 mg Cu/kg DM, 50.5 mg Zn/kg DM, 27.7 mg Mn/kg DM, and 0.12 mg Co/kg DM); 2) basal diet supplemented with 10 mg Cu/kg DM from CuSO4, 30 mg Zn/kg DM from ZnSO4, 20 mg Mn/kg DM from MnSO4, 0.50 mg I/kg DM from EDDI, 0.10 mg Se/kg DM from Na2O3Se, and 0.10 mg Co/kg DM from CoCO3 (NRC); 3) basal diet supplemented with inorganic forms of Cu, Zn, Mn, EDDI, Se and Co at consulting nutritionist recommendations (CNI, 20, 100, 50, 0.50, 0.20, and 0.20 mg of mineral/kg DM, respectively); and 4) basal diet supplemented with 66.6% inorganic and 33.4% organic Cu, Zn, Mn and Co, and inorganic forms of I and Se at iso-concentration to consulting nutritionist recommendations of treatment 3 (CNO). All steers were fed a high concentrate, steam-flaked, corn-based diet for 154 d. Steers were individually weighed on d -1, 0, 35, 121, 153, and 154. Continuous data were analyzed on a pen mean basis using a mixed model appropriate for a randomized block design (fixed effects = treatment and time; random effect = replicate). Categorical data were analyzed utilizing GLIMMIX (fixed effect = treatment; random effect = replicate). Initial and final BW, ADG, DMI, F:G and G:F ratios and calculated net energy recoveries were similar (P > 0.23) across treatments. Subcutaneous adipose tissue depth, HCW, KPH, yield grade, marbling score, and quality grade were similar across treatments (P > 0.17). Final liver Zn, Mn, Se, and Co concentrations were similar across treatments (P > 0.37). Under the conditions of this experiment, it appears that basal dietary concentrations of Cu, Zn, Mn, and Co were adequate for growth and performance of finishing yearling feedlot steers. For experiment 2, an in vitro analysis was utilized to determine "releasability" of trace minerals from the basal diets fed in experiment 1. Three tubes for each treatment ration as listed for experiment 1 were incubated for 0, 6, 12, and 24 h in a 3:1 ratio of modified McDougall (1984) buffer and rumen fluid taken from steers fed high a concentrate finishing diet. Dry matter disappearance percentage was similar across treatments (P > 0.49). Percent Cu released was significantly different (P > 0.02) for treatment where NC was less than Suppl, and percent Zn released was also significant (P > 0.0004) for treatment NC was also lower than Suppl. From the simulated conditions of the second experiment, it appears there are differences in the ration "releaseabilities" of Cu and Zn from the simulated abomasal and ruminal conditions from treatment diets. Advisors/Committee Members: Engle, Terry E. (advisor), Wagner, John J. (committee member), Brummer, Joe E. (committee member).

Subjects/Keywords: beef cattle; trace minerals; feedlot

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Berrett, C. J. (2013). Influence of trace mineral concentration and source on yearling feedlot steer performance, carcass characteristics, and trace mineral status. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/80206

Chicago Manual of Style (16^th Edition):

Berrett, Cari J. “Influence of trace mineral concentration and source on yearling feedlot steer performance, carcass characteristics, and trace mineral status.” 2013. Masters Thesis, Colorado State University. Accessed March 07, 2021. http://hdl.handle.net/10217/80206.

MLA Handbook (7^th Edition):

Berrett, Cari J. “Influence of trace mineral concentration and source on yearling feedlot steer performance, carcass characteristics, and trace mineral status.” 2013. Web. 07 Mar 2021.

Vancouver:

Berrett CJ. Influence of trace mineral concentration and source on yearling feedlot steer performance, carcass characteristics, and trace mineral status. [Internet] [Masters thesis]. Colorado State University; 2013. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10217/80206.

Council of Science Editors:

Berrett CJ. Influence of trace mineral concentration and source on yearling feedlot steer performance, carcass characteristics, and trace mineral status. [Masters Thesis]. Colorado State University; 2013. Available from: http://hdl.handle.net/10217/80206

University of Newcastle

20. Chen, Zhihao. Behaviour of bubble clusters in a turbulent flotation cell.

Degree: PhD, 2014, University of Newcastle

URL: http://hdl.handle.net/1959.13/1040877

►

Research Doctorate - Doctor of Philosophy (PhD) (Chemical Engineering)

In the flotation process for the separation of valuable minerals from their ores, it is known… (more)

▼

Research Doctorate - Doctor of Philosophy (PhD) (Chemical Engineering)

In the flotation process for the separation of valuable minerals from their ores, it is known that the rate of capture of particles decreases as the particle size increases. It has been postulated that the range of particles that can be recovered in conventional machines could be extended by the use of bubble clusters (Ata and Jameson, 2005). However, little is known about the effect of the turbulent shear in the flotation cell, as reflected in the power input or the impeller rotational speed, on the structure of the clusters, or even if clusters can form in existing equipment where the power input is in the range 0.5 to 5 kW/m³. In this thesis, the behaviour of bubble clusters in turbulent conditions in flotation cells has been studied both experimentally and theoretically. The breakup and re-formation of clusters and the effect of bubble size and impeller speed on the behaviour of clusters has been investigated. The apparatus used was essentially a laboratory flotation cell, agitated by a Rushton turbine. The cell was modified to allow pre-formed clusters to rise out of a fluidized bed and into the path of the rotating impeller. The events were captured using a digital camera, and the images were analysed to give the sizes of the bubbles and clusters.In the first part of the investigation, a collector was used but no frother. In these conditions, the bubble diameter was effectively controlled by the collector concentration, and it varied considerably. It was found that the sizes of clusters decreases with increasing shear rate at low impeller speeds, and at higher speeds the clusters are broken up into bubbles and particles and then re-form into clusters through collision. At even higher speeds the bubbles themselves are broken up into smaller bubbles that then re-form into small clusters. In the second part, frother was used at a concentration above the critical coalescence concentration, to control the bubble size, which remained essentially constant at this concentration. The bubbles were too small to be broken by the action of the impeller, so they always remained at the same size. In this case it was found that when the impeller speed was increased, two stages of formation were observed, the fragmentation and equilibrium stages. In the fragmentation stage, at low impeller speeds, the clusters were loose and filamentous, and as the energy input increases, they rupture and re-form. In the second stage, above a critical impeller speed, dense clusters formed whose size was relatively insensitive to the energy input. The cluster behaviour was modelled, based on concepts drawn from the related fields of floc breakup and bubble breakup. The clusters were modelled on the assumption that the bubbles were bridged by particles, so the cohesive strength was determined by the capillary force between the bubbles and the particles. Two different theories were investigated for the disruptive force from the turbulent liquid: the shear rate…

Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering.

Subjects/Keywords: bubble clusters; minerals; turbulent shear

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chen, Z. (2014). Behaviour of bubble clusters in a turbulent flotation cell. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1040877

Chicago Manual of Style (16^th Edition):

Chen, Zhihao. “Behaviour of bubble clusters in a turbulent flotation cell.” 2014. Doctoral Dissertation, University of Newcastle. Accessed March 07, 2021. http://hdl.handle.net/1959.13/1040877.

MLA Handbook (7^th Edition):

Chen, Zhihao. “Behaviour of bubble clusters in a turbulent flotation cell.” 2014. Web. 07 Mar 2021.

Vancouver:

Chen Z. Behaviour of bubble clusters in a turbulent flotation cell. [Internet] [Doctoral dissertation]. University of Newcastle; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1959.13/1040877.

Council of Science Editors:

Chen Z. Behaviour of bubble clusters in a turbulent flotation cell. [Doctoral Dissertation]. University of Newcastle; 2014. Available from: http://hdl.handle.net/1959.13/1040877

University of Manchester

21. Bryant, Yazmina Mercedes. Interactions of polycyclic aromatic hydrocarbons with mineral surfaces.

Degree: PhD, 2011, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/interactions-of-polycyclic-aromatic-hydrocarbons-with-mineral-surfaces(a81215d1-4510-48c8-ad75-a5b6433e80de).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542686

► The toxicity and ubiquitousness of PAHs within different terrestrial environments has been an increasing cause for concern amongst environmental scientists in the last decades, in… (more)

▼ The toxicity and ubiquitousness of PAHs within different terrestrial environments has been an increasing cause for concern amongst environmental scientists in the last decades, in particular regarding their transport within the soil. In an attempt to understand the role of pure inorganic phases in PAH-mobility; experiments exposing mineral soil components with low organic matter content to a PAH-representative were carried out. The systems consisted of four different mineral phases (quartz sand, hematite, iron coated quartz sand and montmorillonite) which were individually exposed to naphthalene in electrolyte solutions prepared at increasing ionic strengths (NaNO3: 0.001 M; 0.01 M; 0.1 M) and pH (4.0 and 5.5). All experiments were conducted over at 24 reaction intervals and at ambient temperature conditions.Mineral geosorbents are traditionally known to be poor PAH-scavengers; in particular when compared to organic, high surface area materials such as activated carbons. On this basis, a preliminary validation experiment (Proof of Concept Experiment) was conducted to test the sensitivity of the selected extraction method (SPME) under complete uptake (activated carbon) and very low uptake (quartz sand) conditions. By extracting and analysing the supernatant after 24 hr of exposure of both sorbents to naphthalene under identical conditions it was concluded that SPME was a feasible extraction technique, yielding good reproducibility (n=3, inter-day RSD%= 11.18% ) even at very low PAH concentrations (0.2 µg / L). The final concentration of naphthalene in the sample supernatant after 24 hours was determined by GC-FID. All samples were extracted using the Solid Phase Microextraction method developed during the Proof of Concept which allowed the rapid extraction of naphthalene in the headspace HS-SPME (extraction time = 3 minutes) using temperature control and ultrasonication as means of agitation. Each sample set included triplicates of blanks and samples as well as calibration standards (in duplicate where possible)Out of the four minerals, only quartz sand and hematite showed a slight tendency towards naphthalene removal from solution; a finding which correlated well with increasing ionic strength. The other two minerals did not show any such trend and the results were deemed inconclusive. In regards to the results for quartz and hematite; the detected uptake was found to be below the sensitivity of the current SPME extraction method according to the error analysis carried out by comparing the sample and blank means whilst accounting for error equal to 1σ. The overlapping of both means in the majority of the samples indicated that both averages were too close to be accurately resolved (due to very low naphthalene uptake). Modifications to the SPME method could improve the reproducibility and decrease the spread of the data; however, this measure would only guarantee higher statistical confidence (95 %) and not higher naphthalene uptake by these minerals. These observations lead to the conclusion that naphthalene was…

Subjects/Keywords: 577.14; PAH; SPME; minerals

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APA (6^th Edition):

Bryant, Y. M. (2011). Interactions of polycyclic aromatic hydrocarbons with mineral surfaces. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/interactions-of-polycyclic-aromatic-hydrocarbons-with-mineral-surfaces(a81215d1-4510-48c8-ad75-a5b6433e80de).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542686

Chicago Manual of Style (16^th Edition):

Bryant, Yazmina Mercedes. “Interactions of polycyclic aromatic hydrocarbons with mineral surfaces.” 2011. Doctoral Dissertation, University of Manchester. Accessed March 07, 2021. https://www.research.manchester.ac.uk/portal/en/theses/interactions-of-polycyclic-aromatic-hydrocarbons-with-mineral-surfaces(a81215d1-4510-48c8-ad75-a5b6433e80de).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542686.

MLA Handbook (7^th Edition):

Bryant, Yazmina Mercedes. “Interactions of polycyclic aromatic hydrocarbons with mineral surfaces.” 2011. Web. 07 Mar 2021.

Vancouver:

Bryant YM. Interactions of polycyclic aromatic hydrocarbons with mineral surfaces. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Mar 07]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/interactions-of-polycyclic-aromatic-hydrocarbons-with-mineral-surfaces(a81215d1-4510-48c8-ad75-a5b6433e80de).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542686.

Council of Science Editors:

Bryant YM. Interactions of polycyclic aromatic hydrocarbons with mineral surfaces. [Doctoral Dissertation]. University of Manchester; 2011. Available from: https://www.research.manchester.ac.uk/portal/en/theses/interactions-of-polycyclic-aromatic-hydrocarbons-with-mineral-surfaces(a81215d1-4510-48c8-ad75-a5b6433e80de).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542686

Laurentian University

22. Nelles, Edward William. Genesis of Cu-PGE-rich footwall-type mineralization in the Morrison deposit, Sudbury .

Degree: 2014, Laurentian University

URL: https://zone.biblio.laurentian.ca/dspace/handle/10219/2205

► The Morrison deposit, located at the Levack mine in the City of Greater Sudbury, is a footwall-type Cu-Ni-platinum-group-element (PGE) deposit hosted within a zone of… (more)

▼ The Morrison deposit, located at the Levack mine in the City of Greater Sudbury, is a footwall-type Cu-Ni-platinum-group-element (PGE) deposit hosted within a zone of Sudbury Breccia in the Archean Levack Gneiss Complex beneath the North Range of the Sudbury Igneous Complex. It consists of sharp-walled, sulfide-rich veins that are enriched in Cu-Pt-Pd-Au relative to contact-type mineralization and can be subdivided based on vein geochemistry, mineralogy, texture, and morphology into a pyrrhotite-rich upper domain, a chalcopyrite-rich lower domain, and a pyrrhotite equal to chalcopyrite middle domain. All domains contain steeply to vertically dipping first-order sulfide veins, irregular and discontinuous second-order sulfide veins, and disseminated sulfides in country rocks. First- and second-order veins can be further subdivided into inclusion-free veins typically within Sudbury breccia matrix or along clast-matrix boundaries, and very irregular and inclusion-rich veins associated with leucosomes in mafic gneiss clasts and granophyric-textured dikes. First-order veins consist of pyrrhotite > chalcopyrite = pentlandite > magnetite in the upper domain, pyrrhotite = chalcopyrite > pentlandite > cubanite > magnetite in the middle domain, and chalcopyrite >> pentlandite > pyrrhotite = cubanite > magnetite in the lower domain. Second-order veins consist of pyrrhotite = chalcopyrite > pentlandite > magnetite and chalcopyrite = millerite = pentlandite in the middle domain, and chalcopyrite >> millerite, millerite > chalcopyrite, bornite >> chalcopyrite, and millerite > bornite > chalcopyrite in the lower domain. Second order veins are adjacent to and in contact with epidote, amphibole, chlorite, carbonate, quartz, and magnetite alteration minerals. Sulfide mineralization in the Morrison deposit is similar to other footwall mineralization associated with the SIC. The veins appear to have been emplaced preferentially into zones of Sudbury Breccia that were within ~400m of the basal contact of the SIC, because that lithology is more permeable and because those zones are within the thermal aureole of the cooling SIC permitting penetration of sulfide melts. The mineralogical, textural, and geochemical zoning in the chalcopyrite-pentlandite-pyrrhotite-rich parts of the Morrison deposit are best explained by partial fractional and/or equilibrium crystallization of MSS and ISS. Bornite ± millerite-rich mineralization are interpreted to have formed by reaction of residual sulfide melts with wall rocks, consuming Fe and S to form actinolitemagnetite- epidote-chlorite-sulfide reaction zones and driving the sulfide melt across the thermal divide in that part of the Fe-Cu-Ni-S system to crystallize borniteSS ± milleriteSS. Gold-Pt-Pd appear to have been more mobile than other metals, forming localized zones of enrichment, although it is not clear yet whether they were mobile as Au-Pt-Pd-Bi-Te-Sb-rich melts or aqueous fluids.

Subjects/Keywords: Morrison deposit; Sudbury; Minerals

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APA (6^th Edition):

Nelles, E. W. (2014). Genesis of Cu-PGE-rich footwall-type mineralization in the Morrison deposit, Sudbury . (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/dspace/handle/10219/2205

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nelles, Edward William. “Genesis of Cu-PGE-rich footwall-type mineralization in the Morrison deposit, Sudbury .” 2014. Thesis, Laurentian University. Accessed March 07, 2021. https://zone.biblio.laurentian.ca/dspace/handle/10219/2205.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nelles, Edward William. “Genesis of Cu-PGE-rich footwall-type mineralization in the Morrison deposit, Sudbury .” 2014. Web. 07 Mar 2021.

Vancouver:

Nelles EW. Genesis of Cu-PGE-rich footwall-type mineralization in the Morrison deposit, Sudbury . [Internet] [Thesis]. Laurentian University; 2014. [cited 2021 Mar 07]. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2205.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nelles EW. Genesis of Cu-PGE-rich footwall-type mineralization in the Morrison deposit, Sudbury . [Thesis]. Laurentian University; 2014. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2205

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

California State University – Sacramento

23. Van Atta, Heidi Allison. Reactions between aluminum and amorphous SiO2 and crystalline quartz: a pH, concentration, and time dependent study.

Degree: MS, Chemistry, 2011, California State University – Sacramento

URL: http://hdl.handle.net/10211.9/1048

► Reactions between aqueous Al and amorphous SiO2 and crystalline quartz were investigated in order to understand the speciation of dissolved Al in natural waters. Although… (more)

▼ Reactions between aqueous Al and amorphous SiO2 and crystalline quartz were investigated in order to understand the speciation of dissolved Al in natural waters. Although these solids have the same chemical makeup, their physical structures differ in that the amorphous mineral is disordered while quartz is highly crystalline. These minerals were examined over several weeks with [Al] ranging from 0.05 mM ??? 86 mM over a pH range of 2 ??? 8.2 to determine which reactions occur. Possible reactions include 1) precipitation of aluminosilicates; 2) precipitation of Al(OH)3; 3) ion exchange between dissolved Al and surface Si; 4) sorption of Al onto the Si mineral surface; and 5) desorption/dissolution of Al from the mineral surface. Graphite Furnace Atomic Absorption (GFAA) was used to measure aqueous Al and Si concentrations before and after each reaction and 27Al Magic Angle Spinning Nuclear Magnetic Resonance (27Al MAS NMR at 11.7 T and 21.1 T) was used to analyze the coordination geometry of the solid Al species that formed. Experiments involving amorphous SiO2 (reaction time = 2 h) revealed that two reactions took place: Al sorption to the mineral surface occurred at pH > 3.7 while precipitation of an aluminosilicate occurred at pH > 5. Al geometry for both of these sites was found to be tetrahedral. Aqueous Si and Al data from the time dependent experiments (7 days, pH = 4.3, 5.4, and 8.2) showed that Al was not released into solution, either via dissolution or desorption, even after 7 days of reacting. Dissolved Si increased after 7 days of continuous mixing, especially at pH 4.3, in which the amount of Si in solution nearly doubled. This additional Si in solution was due to dissolution of the solid phase over time. Experiments with higher [Al] (24 mM and 86 mM, pH = 4.7) forced aluminum hydroxide precipitation with both 5-coordinate and 6-coordinate Al geometry. Investigation of the quartz mineral phase showed that dissolution did not occur over the pH range 4.3 ??? 8.2 at room temperature. With no dissolved Si available, an aluminosilicate precipitate did not form. At pH 6.4, there was some Al sorption to the surface but the majority of aqueous Al precipitated as aluminum hydroxide with 5-coordinate and 6-coordinate Al geometry. These results were very similar to the aluminum hydroxide precipitate formed in the amorphous SiO2 experiments at high Al concentrations. From these experiments, crystalline quartz appears to be stable at room temperature and does not react with aqueous Al. On the other hand, amorphous SiO2 has a high surface area and many surface sites, which allows for Al sorption as well as dissolution which leads to formation of an aluminosilicate precipitate. Advisors/Committee Members: Houston, Jacqueline R..

Subjects/Keywords: Silicon; Minerals; Environmental chemistry

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APA (6^th Edition):

Van Atta, H. A. (2011). Reactions between aluminum and amorphous SiO2 and crystalline quartz: a pH, concentration, and time dependent study. (Masters Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.9/1048

Chicago Manual of Style (16^th Edition):

Van Atta, Heidi Allison. “Reactions between aluminum and amorphous SiO2 and crystalline quartz: a pH, concentration, and time dependent study.” 2011. Masters Thesis, California State University – Sacramento. Accessed March 07, 2021. http://hdl.handle.net/10211.9/1048.

MLA Handbook (7^th Edition):

Van Atta, Heidi Allison. “Reactions between aluminum and amorphous SiO2 and crystalline quartz: a pH, concentration, and time dependent study.” 2011. Web. 07 Mar 2021.

Vancouver:

Van Atta HA. Reactions between aluminum and amorphous SiO2 and crystalline quartz: a pH, concentration, and time dependent study. [Internet] [Masters thesis]. California State University – Sacramento; 2011. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10211.9/1048.

Council of Science Editors:

Van Atta HA. Reactions between aluminum and amorphous SiO2 and crystalline quartz: a pH, concentration, and time dependent study. [Masters Thesis]. California State University – Sacramento; 2011. Available from: http://hdl.handle.net/10211.9/1048

University of Cape Town

24. Moyo, Thandazile. An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions.

Degree: Image, Centre for Minerals Research, 2016, University of Cape Town

URL: http://hdl.handle.net/11427/23468

► Chalcopyrite is not only the most abundant of the copper sulphides, but also the most stable, making it recalcitrant to hydrometallurgical treatment processes especially in… (more)

▼ Chalcopyrite is not only the most abundant of the copper sulphides, but also the most stable, making it recalcitrant to hydrometallurgical treatment processes especially in atmospheric leaching. Hence, pyrometallurgical processes are traditionally used to treat chalcopyrite concentrates. However, ore grades are falling and concentration processes are becoming increasingly costly, prompting need to revisit hydrometallurgical treatment processes (especially heap leaching), which are otherwise regarded as relatively economic and environmentally friendly. Key hydrometallurgical processes for chalcopyrite treatment are ferric sulphate, chloride and ammoniacal systems. The ferric sulphate system does not work well under atmospheric conditions, except in combination with thermophilic microorganisms, whereas the chloride system has only recently been evaluated more seriously for heap leach processes. The ammonia system remains relatively unexplored and most studies date back more than 40 years, but the system has considerable potential for further development. Ammonia systems can be effectively used to leach copper from chalcopyrite in the presence of an oxidant. The ammoniacal leaching system is heavily reliant on a good surface mass transfer system, hence it being widely studied in high pressure systems where oxygen was accepted to be the oxidant. Leach reactors were designed to use agitation systems which promote the abrasion of an iron based deposit layer thought to passivate the mineral surface. Most research on the ammonia leaching systems has previously been carried out in controlled or bulk leaching studies and only a few used electrochemical studies. A disconnect exits between the two approaches, resulting in different proposed fundamental reaction mechanisms and kinetic understanding. A fundamental electrochemical and controlled leach study of the oxidative leaching of chalcopyrite in ammoniacal solutions has been undertaken. The study covered the following aspects: a description of the mixed potentials, chemistry and kinetics of the anodic reaction, the cathodic reduction of the oxidants, the formation and effect of surface deposits and lastly a look at how results from electrochemical studies compare to those from the leaching of a similar mineral sample under similar solution conditions. A detailed study of the mixed potentials on a more or less pure chalcopyrite electrode has shown the redox reactions on the surface of the mineral to be controlled by the oxidation of chalcopyrite and reduction of copper(II). The presence of oxygen has been found to have no significant effect on mixed potentials in ammoniacal solutions in the presence of initial copper(II). Constant potential and potentiodynamic studies on the anodic reaction have shown the rate of the anodic reaction to increase with an increase in potential in a standard 1M ammonia/ammonium sulphate solution (which buffers at pH 9.6) in exponential fashion supporting conventional Butler-Volmer behaviour with a anodic transfer coefficient of 0.42 and a rate… Advisors/Committee Members: Petersen Joachim (advisor).

Subjects/Keywords: Chemical Engineering; Minerals Research

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moyo, T. (2016). An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/23468

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moyo, Thandazile. “An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions.” 2016. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/23468.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moyo, Thandazile. “An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions.” 2016. Web. 07 Mar 2021.

Vancouver:

Moyo T. An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions. [Internet] [Thesis]. University of Cape Town; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/23468.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moyo T. An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions. [Thesis]. University of Cape Town; 2016. Available from: http://hdl.handle.net/11427/23468

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

25. Owusu Gyebi, Prince. Investigating the rheological behavior of Witbank coal water mixtures.

Degree: Image, Centre for Minerals Research, 2016, University of Cape Town

URL: http://hdl.handle.net/11427/20984

► South Africa has large low-grade coal reserves. With the prospect of expanding its coal demands for exports and power generation, it is important that the… (more)

Subjects/Keywords: Chemical Engineering; Minerals Research; Hydrometallurgy

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APA (6^th Edition):

Owusu Gyebi, P. (2016). Investigating the rheological behavior of Witbank coal water mixtures. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/20984

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Owusu Gyebi, Prince. “Investigating the rheological behavior of Witbank coal water mixtures.” 2016. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/20984.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Owusu Gyebi, Prince. “Investigating the rheological behavior of Witbank coal water mixtures.” 2016. Web. 07 Mar 2021.

Vancouver:

Owusu Gyebi P. Investigating the rheological behavior of Witbank coal water mixtures. [Internet] [Thesis]. University of Cape Town; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/20984.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Owusu Gyebi P. Investigating the rheological behavior of Witbank coal water mixtures. [Thesis]. University of Cape Town; 2016. Available from: http://hdl.handle.net/11427/20984

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

26. Mhonde, Ngoni Pepukai. Investigating collector and depressant performance in the flotation of selected iron ores.

Degree: Image, Centre for Minerals Research, 2016, University of Cape Town

URL: http://hdl.handle.net/11427/22742

► As the excessive extraction of high grade iron ore reserves has led to the rapid depletion of these ore bodies, there is a growing need… (more)

Subjects/Keywords: Chemical Engineering; Minerals Research

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APA (6^th Edition):

Mhonde, N. P. (2016). Investigating collector and depressant performance in the flotation of selected iron ores. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/22742

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mhonde, Ngoni Pepukai. “Investigating collector and depressant performance in the flotation of selected iron ores.” 2016. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/22742.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mhonde, Ngoni Pepukai. “Investigating collector and depressant performance in the flotation of selected iron ores.” 2016. Web. 07 Mar 2021.

Vancouver:

Mhonde NP. Investigating collector and depressant performance in the flotation of selected iron ores. [Internet] [Thesis]. University of Cape Town; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/22742.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mhonde NP. Investigating collector and depressant performance in the flotation of selected iron ores. [Thesis]. University of Cape Town; 2016. Available from: http://hdl.handle.net/11427/22742

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

27. Ngwenya, Dineo. Approximate solution of melt depth inside titanium during laser materials processing.

Degree: Image, Centre for Minerals Research, 2015, University of Cape Town

URL: http://hdl.handle.net/11427/24327

► The use of lasers has increased in areas of science, engineering and medicine. Their advantages over the traditional methods of thermal application are their ability… (more)

▼ The use of lasers has increased in areas of science, engineering and medicine. Their advantages over the traditional methods of thermal application are their ability to localize thermal treatments, ability to deliver high power density and to complete thermal processes in extremely short time periods. During the irradiation of a material, only a portion of the laser beam energy is absorbed. If the absorbed energy is high enough, melting can occur. The ability to predict, thus control the melting process is an advantage to manufacturing processes such as laser welding, surface re-melting and alloying. Using analytical approaches that are already in existence, this research adapts a mathematical model to approximate temperature profiles as well as isothermal depths given a single laser pulse. In order to assess the error associated with the adapted model, laser irradiation experiments are carried out on CP titanium samples using a focal spot of 600 μm and nitrogen gas as the shielding gas at a flow rate of 5 l/min. The effects of some important laser processing parameters on the melt depth are discussed. The adapted model approximated that the melt depth increases with both increasing laser power and increasing pulse duration. Furthermore, the experimental results revealed that it is the combination of short pulses and a high laser power that yields melt zones that are relatively free of porosity, craters and cracking. Additionally, an assessment of the error associated with the adapted model revealed that the adapted model generally overestimates the experimental data with increasing laser pulse duration. At a combination of 0.1s and 1200W (representing a combination of short laser pulse and high laser power) the error of approximation was 59%. The error increased to 90% at a combination of laser parameters 5s and 600W (representing a combination of a long laser pulse and low laser power). It is recommended that future studies be undertaken to improve modelling accuracies for a wider range of laser processing parameters. Advisors/Committee Members: Kahlen, F J (advisor).

Subjects/Keywords: Mechanical Engineering; Minerals Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ngwenya, D. (2015). Approximate solution of melt depth inside titanium during laser materials processing. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/24327

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ngwenya, Dineo. “Approximate solution of melt depth inside titanium during laser materials processing.” 2015. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/24327.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ngwenya, Dineo. “Approximate solution of melt depth inside titanium during laser materials processing.” 2015. Web. 07 Mar 2021.

Vancouver:

Ngwenya D. Approximate solution of melt depth inside titanium during laser materials processing. [Internet] [Thesis]. University of Cape Town; 2015. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/24327.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ngwenya D. Approximate solution of melt depth inside titanium during laser materials processing. [Thesis]. University of Cape Town; 2015. Available from: http://hdl.handle.net/11427/24327

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

28. Dhansay, Nur Mohamed. Fracture mechanics based fatigue and fracture toughness evaluation of SLM Ti-6Al-4V.

Degree: Image, Centre for Minerals Research, 2015, University of Cape Town

URL: http://hdl.handle.net/11427/24326

► The focus of this research project was to determine experimentally the fatigue and fracture toughness characteristic, from a fracture mechanics perspective, of Ti-6Al-4V titanium alloy… (more)

▼ The focus of this research project was to determine experimentally the fatigue and fracture toughness characteristic, from a fracture mechanics perspective, of Ti-6Al-4V titanium alloy manufactured by Selective Laser Melting (SLM). Three build orientations are considered where a fatigue crack is grown parallel and two are grown perpendicular to the build orientation. The project then endeavours to generate a fracture mechanics based Paris equation from the fatigue crack growth rate results and together with the fracture toughness, fatigue life predictions may be determined based on crack propagation lifetimes. SLM is an Additive Manufacturing (AM) technique whereby an object is fabricated in a layerwise manner via the use of lasers, directly from a 3D CAD model. This process allows for the manufacture of complex designs in its net or near net shape form, which is not possible with conventional manufacturing techniques. There are minimal amounts of material wastage and it potentially eliminates post manufacture machining and processing costs. Ti- 6Al-4V is used in many applications where high strength at low density is required at moderate temperatures. Corrosion resistance qualities of the alloy are also considered for many applications. Some of the applications where this alloy is used include turbine engine components, aircraft structural components, aerospace fasteners, high-performance automotive parts, marine applications, medical implant devices and sports equipment. Due to the large use of the alloy in industry and with the potential benefits of manufacturing by SLM, there is a great need for investigating SLM Ti-6Al-4V as a viable alternative to conventional casting, forging and machining. There is limited literature covering the fatigue crack growth rate and fracture toughness of SLM Ti-6Al-4V and the effect of build orientation on these characteristics. However, it is clear, from the limited available literature that fatigue crack growth rate behaviour is affected by build orientation, and so this project investigates the effect of these orientations, and aims to contribute to understanding why these orientation effects occur. Since there is even less literature available on the fracture toughness of SLM Ti-6Al-4V with respect to build orientation, this project also endeavours to characterise orientation effects on fracture toughness, if any, and compares these with those of conventionally manufacture Ti-6Al-4V. Advisors/Committee Members: Tait, Robert B (advisor), Becker, Thorsten (advisor).

Subjects/Keywords: Mechanical Engineering; Minerals Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dhansay, N. M. (2015). Fracture mechanics based fatigue and fracture toughness evaluation of SLM Ti-6Al-4V. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/24326

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dhansay, Nur Mohamed. “Fracture mechanics based fatigue and fracture toughness evaluation of SLM Ti-6Al-4V.” 2015. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/24326.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dhansay, Nur Mohamed. “Fracture mechanics based fatigue and fracture toughness evaluation of SLM Ti-6Al-4V.” 2015. Web. 07 Mar 2021.

Vancouver:

Dhansay NM. Fracture mechanics based fatigue and fracture toughness evaluation of SLM Ti-6Al-4V. [Internet] [Thesis]. University of Cape Town; 2015. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/24326.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dhansay NM. Fracture mechanics based fatigue and fracture toughness evaluation of SLM Ti-6Al-4V. [Thesis]. University of Cape Town; 2015. Available from: http://hdl.handle.net/11427/24326

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

29. Safari, Mehdi. The effect of energy input on flotation kinetics.

Degree: Image, Centre for Minerals Research, 2018, University of Cape Town

URL: http://hdl.handle.net/11427/28162

► SYNOPSIS Energy/power input in a flotation cell is an important parameter which, if optimised, can increase the flotation rate. The optimum energy/power input within a… (more)

▼ SYNOPSIS Energy/power input in a flotation cell is an important parameter which, if optimised, can increase the flotation rate. The optimum energy/power input within a flotation cell is still a matter of conjecture and there is a need for a better understanding of the effect of energy input on flotation kinetics. This study investigates the effect of energy/power input on flotation kinetics in an oscillating grid flotation cell (OGC). The OGC decouples the processes of solid suspension and bubble generation as well as producing relatively isotropic and homogeneous turbulence with zero mean flow. Due to this, oscillating grids provide a potentially ideal environment for investigating the effects of energy input on flotation kinetics, which cannot be achieved in a mechanical flotation cell. The first objective of this thesis was to determine the effect of energy/power input on the flotation kinetics of sulphide minerals (galena, pyrite & pentlandite) and oxide minerals (apatite & hematite) in a laboratory scale oscillating grid flotation cell. The second objective was to compare the results from the laboratory OGC to comparative studies in the flotation literature and to fundamental models for particle-bubble contacting. The third objective was to determine whether the experimental results from the laboratory OGC are consistent with those from a pilot-scale OGC operating on a platinum ore. Galena, pyrite, pentlandite (-150 μm), apatite (-650 μm) and hematite (-75 μm) were floated in the laboratory OGC at energy inputs from 0.1 to 5.0 W/kg, using 0.13, 0.24, 0.58 and 0.82 mm bubble sizes (d₁₀), and at three collector dosages. Platinum ore (-75 μm) was floated in the pilot-scale OGC at energy inputs from 0 to 2.5 W/kg, using 0.71 and 1.47 mm bubble sizes (d₁₀). The effect of energy input on flotation kinetics was interpreted through trends in experimental flotation rate constants, simulated flotation rate constants and attachment-detachment flotation rate constants. Here, simulated flotation rate constants were calculated using a literature fundamental model for flotation in turbulent systems. This model is based on suitable expressions for the collision frequency, collision efficiency, attachment efficiency and stability efficiency, Attachment-detachment flotation rate constants were calculated using a kinetic model which allows for the two separate processes of bubble-particle collision/attachment and detachment. This model is based on kinetic expressions using empirical correlations for the attachment and detachment rate constants. Experimental flotation results show that the effect of energy input on the flotation rate is strongly dependent on the particle size and particle density and less dependent on bubble size and contact angle. Flotation rates generally increase with increasing particle size, decreasing bubble size and increasing contact angle, as is commonly found in the literature. Increasing energy input generally leads to an increase in the flotation rate for fine particles, an optimum flotation rate for… Advisors/Committee Members: Deglon, David A (advisor).

Subjects/Keywords: Chemical Engineering; Minerals Processing; Mining

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Safari, M. (2018). The effect of energy input on flotation kinetics. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/28162

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Safari, Mehdi. “The effect of energy input on flotation kinetics.” 2018. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/28162.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Safari, Mehdi. “The effect of energy input on flotation kinetics.” 2018. Web. 07 Mar 2021.

Vancouver:

Safari M. The effect of energy input on flotation kinetics. [Internet] [Thesis]. University of Cape Town; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/28162.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Safari M. The effect of energy input on flotation kinetics. [Thesis]. University of Cape Town; 2018. Available from: http://hdl.handle.net/11427/28162

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cape Town

30. Taggart, Diane. Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit.

Degree: Image, Chemical Engineering, 2016, University of Cape Town

URL: http://hdl.handle.net/11427/20326

► Zincor's average zinc recovery was 90.29 % (for the period of 1 January 2009 to 30 September 2011), which was well below the industry standard… (more)

Subjects/Keywords: Chemical Engineering; Minerals Research; Hydrometallurgy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Taggart, D. (2016). Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/20326

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Taggart, Diane. “Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit.” 2016. Thesis, University of Cape Town. Accessed March 07, 2021. http://hdl.handle.net/11427/20326.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Taggart, Diane. “Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit.” 2016. Web. 07 Mar 2021.

Vancouver:

Taggart D. Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit. [Internet] [Thesis]. University of Cape Town; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11427/20326.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Taggart D. Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit. [Thesis]. University of Cape Town; 2016. Available from: http://hdl.handle.net/11427/20326

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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