+publisher:"University of Adelaide" +contributor:("School of Physical Sciences")

University of Adelaide

1. Atkins, Natasha Jade. IceCube's neutrinos: galactic or extra-galactic?.

Degree: 2018, University of Adelaide

► The exact origin and production method of the astrophysical neutrino, a subatomic particle that is very difficult to detect, is yet to be confirmed. Here,… (more)

▼ The exact origin and production method of the astrophysical neutrino, a subatomic particle that is very difficult to detect, is yet to be confirmed. Here, two source scenarios for the origin of the neutrino are considered: Galactic and extra-galactic. In the Galactic scenario, neutrinos are searched for from the disk and the halo of the Milky Way, whereas in the extra-galactic case neutrinos might be coming from Active Galactic Nuclei, Starburst Galaxies and other highly energetic regions of the Universe. The IceCube Neutrino Observatory has detected an astrophysical neutrino intensity which may reveal the origin of these neutrinos. The Milky Way is not a unique galaxy. If it were to produce some fraction of the neutrinos that IceCube detects then there must be other similar spiral galaxies in the Universe also contributing to the intensity. This could create a contradiction of how many other Milky Way-like galaxies there would be allowed in the rest of the Universe if the assumption is made that the Milky Way produces nearly all of IceCube’s neutrinos. The overall number density of Milky Way-like objects in the Universe can be calculated for different Galactic source distributions. The neutrino sources could be distributed throughout the halo of the Galaxy or confined to the Galactic disk. By considering various models and calculating the number density of equivalent Milky Way-like galaxies in the rest of the Universe, constraints are placed on the fraction of the IceCube intensity that could be coming purely from the Milky Way. According to the results of this research it is ultimately found that, under the simplifying assumption that the halo is spherical, the halo of the Milky Way cannot account for all of IceCube’s neutrinos and under certain assumptions the disks of Milky Way-like galaxies cannot be the sole origin of neutrinos in light of experimental observations. Advisors/Committee Members: Hill, Gary C. (advisor), School of Physical Sciences (school).

Subjects/Keywords: neutrinos; Milky Way; halo

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Atkins, N. J. (2018). IceCube's neutrinos: galactic or extra-galactic?. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/115171

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):

Atkins, Natasha Jade. “IceCube's neutrinos: galactic or extra-galactic?.” 2018. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/115171.

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

MLA Handbook (7^th Edition):

Atkins, Natasha Jade. “IceCube's neutrinos: galactic or extra-galactic?.” 2018. Web. 27 Feb 2021.

Vancouver:

Atkins NJ. IceCube's neutrinos: galactic or extra-galactic?. [Internet] [Thesis]. University of Adelaide; 2018. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/115171.

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

Council of Science Editors:

Atkins NJ. IceCube's neutrinos: galactic or extra-galactic?. [Thesis]. University of Adelaide; 2018. Available from: http://hdl.handle.net/2440/115171

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

University of Adelaide

2. Kontonikas-Charos, Alkiviadis. Feldspar Petrography and Geochemistry: Insights into the Magmatic-Hydrothermal Evolution of IOCG Systems from South Australia.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/119372

► The iron-oxide copper-gold (IOCG) class of mineral deposits is characterized by, among other properties, widespread alkali alteration and an enrichment of multiple trace elements, including… (more)

▼ The iron-oxide copper-gold (IOCG) class of mineral deposits is characterized by, among other properties, widespread alkali alteration and an enrichment of multiple trace elements, including REE and U. The ability of feldspar replacement reactions to alter physical and chemical properties of host rocks invokes the idea that the early widespread alkali alteration stage within IOCG genesis may prove critical in the subsequent enrichment of trace elements within such magmatic-hydrothermal systems. Based on detailed petrographic investigations and geochemistry, the link between these two fundamental IOCG properties is tested in one of the largest IOCG metallogenic belts in the world, the Olympic Cu-Au Province. Firstly, the temporal evolution of a deeper-style IOCG system (Moonta-Wallaroo) is tracked from protolith through to early and late mineralization stages using mineral reactions associated with regional alkali alteration (namely, albitization), their relative textures and chondrite-normalised REE+Y (hereafter REY) fractionation patterns. Different stages can be distinguished based on variation in REY-anomalies (e.g., Eu, Y), slope (LREE/HREE) and ΣREY concentration. The results also highlight how feldspar alteration is expressed across various lithologies within a single IOCG terrane, which is largely dependent on the style of fluid/rock interaction. In contrast to Moonta-Wallaroo, mineralization at Olympic Dam is hosted largely within a single lithology; the Roxby Downs Granite. Thus, changes in feldspar textures and geochemistry from magmatic to hydrothermal stages within a single lithology can be tracked based on proximity to mineralization within the Olympic Dam Breccia Complex. From observations and analyses of cryptoperthitic alkali feldspars, patch perthite, plagioclase and albite, it is evident that feldspars preserve the major element exchange (loss of Na -> gain of K and Fe -> Cu-U-Au-Ag mineralization) occurring within the Olympic Dam deposit. Moreover, results also highlight the ability of widespread feldspar replacement reactions (with a coupled dissolution-reprecipitation mechanism) to produce significant microporosity within the host rocks that facilitate subsequent fluid/rock interaction and mineralization. The contribution and distribution of REE elements within the Roxby Downs Granite is also investigated and compared to other IOCG terranes within the Olympic Cu-Au province, as well as pre-Hiltaba Suite lithologies, such as the Donington Suite granite. Chondrite-normalized REY fractionation patterns obtained from magmatic and hydrothermal feldspars, show that feldspars in the Roxby Downs Granite are significantly enriched in lattice-bound REY relative to Donington Suite granite. Moreover, although it appears that hydrothermal albite and K-feldspar inherit REY concentrations from the respective parent phases, variation in ΣREE (~1-100 ppm) at Olympic Dam indicate an increase in mobility of REE from feldspars with proximity to the Olympic Dam Breccia Complex. Nanoscale characterization is also… Advisors/Committee Members: Cook, Nigel (advisor), School of Physical Sciences (school).

Subjects/Keywords: Feldspar; Alteration; IOCG; REE remobilisation

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Kontonikas-Charos, A. (2017). Feldspar Petrography and Geochemistry: Insights into the Magmatic-Hydrothermal Evolution of IOCG Systems from South Australia. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119372

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):

Kontonikas-Charos, Alkiviadis. “Feldspar Petrography and Geochemistry: Insights into the Magmatic-Hydrothermal Evolution of IOCG Systems from South Australia.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119372.

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

MLA Handbook (7^th Edition):

Kontonikas-Charos, Alkiviadis. “Feldspar Petrography and Geochemistry: Insights into the Magmatic-Hydrothermal Evolution of IOCG Systems from South Australia.” 2017. Web. 27 Feb 2021.

Vancouver:

Kontonikas-Charos A. Feldspar Petrography and Geochemistry: Insights into the Magmatic-Hydrothermal Evolution of IOCG Systems from South Australia. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119372.

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

Council of Science Editors:

Kontonikas-Charos A. Feldspar Petrography and Geochemistry: Insights into the Magmatic-Hydrothermal Evolution of IOCG Systems from South Australia. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/119372

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

University of Adelaide

3. Evans, Jack D. Simulations of Molecular and Extended Porous Materials.

Degree: 2015, University of Adelaide

URL: http://hdl.handle.net/2440/119471

► Porous materials play vital roles in many industries and currently there is intense interest in developing new examples due to their direct application to clean… (more)

Subjects/Keywords: Molecular simulations; Porous materials; MOFs; DFT

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Evans, J. D. (2015). Simulations of Molecular and Extended Porous Materials. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119471

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):

Evans, Jack D. “Simulations of Molecular and Extended Porous Materials.” 2015. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119471.

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

MLA Handbook (7^th Edition):

Evans, Jack D. “Simulations of Molecular and Extended Porous Materials.” 2015. Web. 27 Feb 2021.

Vancouver:

Evans JD. Simulations of Molecular and Extended Porous Materials. [Internet] [Thesis]. University of Adelaide; 2015. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119471.

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

Council of Science Editors:

Evans JD. Simulations of Molecular and Extended Porous Materials. [Thesis]. University of Adelaide; 2015. Available from: http://hdl.handle.net/2440/119471

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

University of Adelaide

4. Arboit, Francesco. The tectonic evolution of Khao Khwang Fold-Thrust Belt, 4 Central Thailand: new insights in the Permian and Triassic 5 evolution of the Indosinian orogeny in SE Asia.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/113358

► The south-western margin of the Indochina Block and more specifically the Khao Khwang Fold-Thrust Belt (KKFTB) within the Saraburi region in the southern portion of… (more)

▼ The south-western margin of the Indochina Block and more specifically the Khao Khwang Fold-Thrust Belt (KKFTB) within the Saraburi region in the southern portion of the Loei volcanic belt, holds a pivotal role in the reconstruction of the Permo-Triassic evolution of the Indosinian orogeny in SE Asia. Bound to the east by the Khorat Plateau and to the west by the Nan-Uttardit-Sa Kaeo Suture Zone; the KKFTB offers a breath of information regarding inter-terrane correlations and the Late Palaeozoic –Early Mesozoic tectonic setting on the northern margin of the Palaeo and Meso Tethys. The KKFTB offers a natural and ideal laboratory to work out critical components of the tectonic evolution of SE Asia. However it has not often been deeply considered in the models describing the Palaeozoic and Mesozoic phases of the Indosinian tectonic events. The trend of the regional suture zones between the terranes involved in the Indosinian orogeny, such as the sutures between the Sukhothai and Indochina terranes (Chiang Rai Tect. Line, Nan Suture Zone), and between the Sukhothai and Sibumasu terranes (Sa Kaeo Chanthaburi Accretionary complex), are roughly N-S oriented. Hence, in the last decades it has been widely accepted the interpretation where the Indosinian orogeny developed between strongly linear terranes. However, the effects of the Permian and Triassic tectonic events in Thailand have often been interpreted without considering the detailed tectonic evolution of the portion of the Indochina terrane’s margin formed by Khao Khwang Carbonate Platform area of the Saraburi Group, in central Thailand. This area is unusual because: 1) an extensive area representing a thin-skinned fold and thrust belt is well-exposed due to quarrying; and, 2) the fold and thrust belt displays a series of E-W and WNW-ESE striking thrusts and associated folds that are not easily explained in the context of the traditional interpretation where the terranes have been accreted broadly along N-S striking collisional zones. Detailed structural observations in numerous quarries around Highway 21, in a 13 km long dip-direction traverse, revealed that overall the thrust belt is composed of several large thrusts with an approximately northwards transport direction. In the southern part of the area, south-verging structures are present. Although the dominant structural trend is northwards-verging, interference structures, and late strike-slip faults indicate there is more than one phase of structural development present. Considering the polyphase tectonic history of this zone, we considered that integrating a study of fault and fracture with calcite twin analysis might be useful in order to determine the evolving paleo- stress magnitudes and principle stress directions that developed during the tectonic evolution of this highly deformed, polyphase orogen. The tectonic data from the Permian and Triassic carbonates of the Khao Khad Formation of the Saraburi Group, revealed that five tectonic stages might have developed before, during, and after, the Triassic… Advisors/Committee Members: Collins, Alan Stephen (advisor), School of Physical Sciences (school).

Subjects/Keywords: Indosinian orogeny; central Thailand; SE Asia; Khao Khwang Fold-Thrust Belt; tectonic framework; sedimentology; geochronology; structural geology; geochemistry; Research by Publication

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Arboit, F. (2016). The tectonic evolution of Khao Khwang Fold-Thrust Belt, 4 Central Thailand: new insights in the Permian and Triassic 5 evolution of the Indosinian orogeny in SE Asia. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/113358

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):

Arboit, Francesco. “The tectonic evolution of Khao Khwang Fold-Thrust Belt, 4 Central Thailand: new insights in the Permian and Triassic 5 evolution of the Indosinian orogeny in SE Asia.” 2016. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/113358.

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

MLA Handbook (7^th Edition):

Arboit, Francesco. “The tectonic evolution of Khao Khwang Fold-Thrust Belt, 4 Central Thailand: new insights in the Permian and Triassic 5 evolution of the Indosinian orogeny in SE Asia.” 2016. Web. 27 Feb 2021.

Vancouver:

Arboit F. The tectonic evolution of Khao Khwang Fold-Thrust Belt, 4 Central Thailand: new insights in the Permian and Triassic 5 evolution of the Indosinian orogeny in SE Asia. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/113358.

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

Council of Science Editors:

Arboit F. The tectonic evolution of Khao Khwang Fold-Thrust Belt, 4 Central Thailand: new insights in the Permian and Triassic 5 evolution of the Indosinian orogeny in SE Asia. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/113358

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

University of Adelaide

5. Carrillo Serrano, Manuel Eduardo. Properties of hadrons from a non-perturbative approach.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/99169

► The composition and structure of matter remains a fundamental problem in physics. The closest theory that tries to deal with this problem is the Standard… (more)

▼ The composition and structure of matter remains a fundamental problem in physics. The closest theory that tries to deal with this problem is the Standard Model of particle physics, which encodes the electromagnetic, weak and strong interactions. The strong interaction is the main ingredient in the description of hadronic properties such as their masses, distribution of charge and magnetisation, decay parameters, and interactions between them. These properties have the common feature that they are modelled at low four momentum transfer. At those conditions the theory of the strong interactions becomes impossible to use and the best approach is to calculate the hadronic properties using expensive numerical simulations called lattice QCD. Because lattice QCD requires a lot of computational resources, models close to the theory of strong interactions are still of great importance. The work presented in this thesis uses different quark models (in particular the NJL model), in the calculation of the masses, electromagnetic form factors and weak decay properties of some light mass hadrons. In addition, it explores (in the context of the NJL model and others) the consequences that possible changes in fundamental constants could have for the binding energies of certain nuclei. Throughout the whole thesis the results are compared with other models, existing experimental data, and extrapolations of the lattice QCD simulations. In general terms, the agreement in those comparisons is outstanding. In some cases the quark models give predictions for and insights into what is expected for future experiments and lattice calculations. The main thrust of this thesis is to investigate the validity of the NJL model and the other models used here, because they can be crucial in the computation of physical properties of more complex structures such as many hadron systems or systems at very extreme conditions. Lattice QCD in those cases will still require a lot of work, time and computational resources. So far, it is fair to say that the models used here are to a very good extent, a good approximation to first principle calculations in the properties that were calculated in this thesis. Advisors/Committee Members: Thomas, Anthony William (advisor), School of Physical Sciences (school).

Subjects/Keywords: hadrons; NJL model; variations of fundamental constants; kaon decay; electromagnetic form factors; baryon octet; beta decays

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Carrillo Serrano, M. E. (2016). Properties of hadrons from a non-perturbative approach. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/99169

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):

Carrillo Serrano, Manuel Eduardo. “Properties of hadrons from a non-perturbative approach.” 2016. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/99169.

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

MLA Handbook (7^th Edition):

Carrillo Serrano, Manuel Eduardo. “Properties of hadrons from a non-perturbative approach.” 2016. Web. 27 Feb 2021.

Vancouver:

Carrillo Serrano ME. Properties of hadrons from a non-perturbative approach. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/99169.

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

Council of Science Editors:

Carrillo Serrano ME. Properties of hadrons from a non-perturbative approach. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/99169

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

University of Adelaide

6. Sorokin, Jennifer. Large-scale-structure in the Pierre Auger Observatory data directions.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/99908

► This thesis presents a method of analysis of Pierre Auger Observatory Cosmic Ray (CR) directions. I look for evidence of large-scale-structure within these CR directions.… (more)

Subjects/Keywords: Yggdrasil; minimum spanning tree

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Sorokin, J. (2016). Large-scale-structure in the Pierre Auger Observatory data directions. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/99908

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):

Sorokin, Jennifer. “Large-scale-structure in the Pierre Auger Observatory data directions.” 2016. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/99908.

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

MLA Handbook (7^th Edition):

Sorokin, Jennifer. “Large-scale-structure in the Pierre Auger Observatory data directions.” 2016. Web. 27 Feb 2021.

Vancouver:

Sorokin J. Large-scale-structure in the Pierre Auger Observatory data directions. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/99908.

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

Council of Science Editors:

Sorokin J. Large-scale-structure in the Pierre Auger Observatory data directions. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/99908

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

University of Adelaide

7. Spence, Justin Thomas James. Biomimetic synthesis of natural products via reactions of ortho-quinone methides.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/102583

► In recent times, natural product synthesis has become central to many scientific fields; from chemistry, through to biology and pharmacology. As synthetic chemists, natural products… (more)

▼ In recent times, natural product synthesis has become central to many scientific fields; from chemistry, through to biology and pharmacology. As synthetic chemists, natural products are attractive targets due to their interesting and complex structures, combined with some intriguing biological properties. One field that is of particular interest is the use of a biomimetic approach towards the synthesis of complex natural products. This thesis will describe the use ortho-quinone methides and cascade reactions towards the biomimetic synthesis of the penilactones A and B, the peniphenones A-D, virgatolide B and epicolactone. The total synthesis of ent-penilactone A and penilactone B has been achieved via biomimetic Michael reactions between tetronic acids and o-quinone methides. A fivecomponent cascade reaction between a tetronic acid, formaldehyde, and a resorcinol derivative that generates four carbon-carbon bonds, one carbon-oxygen bond and two stereocenters in a one-pot synthesis of penilactone A is also reported. The total synthesis of peniphenones A-D has been achieved via Michael reactions between appropriate nucleophiles and a common ortho-quinone methide intermediate. This strategy, which was based on a biosynthetic hypothesis, minimised the use of protecting groups and thus facilitated concise syntheses of the natural products. The most complex target, the benzannulated spiroketal peniphenone A, was synthesised enantioselectively in nine linear steps from commercially available starting materials. A synthesis for the ortho-quinone methide precursor of virgatolide B has been developed. A simplified enol ether was employed for the biomimetic [4+2] cycloaddition reaction to afford a simplified virgatolide B analogue. An isomerised compound containing a cis fused ring junction, thought to arise via a [4+2] cycloaddition of an ortho-quinone methide and an endocyclic enol ether formed by acid catalysed tautomerisation in situ will also be reported. Finally, preliminary studies towards the synthesis of epicolactone have been conducted. A synthesis of the proposed key proposed biosynthetic intermediate epicoccone B has been achieved in four steps. Efforts towards the synthesis of epicoccine via our proposed cycloetherification route proved to be challenging. Furthermore, the synthesis of epicolactone through our proposed biosynthesis was not viable, which was also observed by Trauner and co-workers in their 2014 synthesis of dibefurin. Advisors/Committee Members: George, Jonathan (advisor), School of Physical Sciences (school).

Subjects/Keywords: natural product synthesis; biomimetic synthesis; ortho-quinone methides

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Spence, J. T. J. (2016). Biomimetic synthesis of natural products via reactions of ortho-quinone methides. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/102583

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):

Spence, Justin Thomas James. “Biomimetic synthesis of natural products via reactions of ortho-quinone methides.” 2016. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/102583.

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

MLA Handbook (7^th Edition):

Spence, Justin Thomas James. “Biomimetic synthesis of natural products via reactions of ortho-quinone methides.” 2016. Web. 27 Feb 2021.

Vancouver:

Spence JTJ. Biomimetic synthesis of natural products via reactions of ortho-quinone methides. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/102583.

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

Council of Science Editors:

Spence JTJ. Biomimetic synthesis of natural products via reactions of ortho-quinone methides. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/102583

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

University of Adelaide

8. Nguyen, Huong Thi Lan. Systematic coarse-graining and dynamical simulations of anisotropic molecules with applications in organic semiconductors.

Degree: 2019, University of Adelaide

URL: http://hdl.handle.net/2440/120747

► Organic semiconductors are used widely in different applications, including organic photovoltaics (OPVs), devices that convert solar energy to electricity. These devices, if applicable commercially, can… (more)

▼ Organic semiconductors are used widely in different applications, including organic photovoltaics (OPVs), devices that convert solar energy to electricity. These devices, if applicable commercially, can help to supply the world’s energy needs without requiring complicated manufacturing and maintenance. Moreover, OPVs possess several useful physical properties such as being light weight, highly transparent, and flexible. This makes organic electronic devices advantageous over those made of inorganic hard materials, especially in applications in which these conditions are required. Although experimental studies show that organic semiconductors can potentially yield high performing devices, the electronic processes that govern the conversion of light to energy are not fully understood. Specifically, how free electrons are created and transferred within the device when a photon is absorbed is strongly debated in the literature. Many experimental and theoretical results have shown that microstructure at the interfaces between the component organic semiconductor materials that make up the device plays an important role in these processes. The microstructure can be induced by directional forces between generally anisotropic organic-semiconductor molecules, combined with translational symmetry breaking at interfaces. In Chapter 3, the interface of a high-performing electron donor–acceptor OPV system consisting of two small organic semiconductors benzodithiophene quaterthiophene rhodanine (BQR) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) is studied using classical molecular dynamics (MD). Atomistic simulations at high temperatures indicate that the "face-on" configuration is more favorable at a liquid–solid interface between the materials. In addition, molecules close to the interface are less ordered with respect to one another than those far from the interface. These factors may benefit charge separation and transport, resulting in good device performance. In general, atomistic simulations are not feasible for studying donor–acceptor interface formation for the typical domain sizes found in devices. A solution to this is to use coarsegrained (CG) models, which increases the simulation efficiency by replacing a collection of atoms as a single interacting site. In Chapter 4, a new systematic methodology to generate CG models for MD simulations is introduced and validated, which constitutes the main result of this thesis. This algorithm is developed so that MD simulations can be simplified but still accurately represent the physical and thermodynamic properties of the simulated materials. More importantly, this method can produce models that capture the anisotropy of molecules, which is especially useful for theoretical studies of organic materials and has not previously been achieved via a systematic algorithm. To validate the method, a CG model of a simple anisotropic organic molecule (benzene) is produced in Chapter 5. Simulations using this model accurately describes the structural and thermodynamic properties… Advisors/Committee Members: Huang, David (advisor), School of Physical Sciences (school).

Subjects/Keywords: anisotropic; coarse-grained method; molecular dynamics; organic semiconductors; organic photovoltaics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Nguyen, H. T. L. (2019). Systematic coarse-graining and dynamical simulations of anisotropic molecules with applications in organic semiconductors. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/120747

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):

Nguyen, Huong Thi Lan. “Systematic coarse-graining and dynamical simulations of anisotropic molecules with applications in organic semiconductors.” 2019. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/120747.

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

MLA Handbook (7^th Edition):

Nguyen, Huong Thi Lan. “Systematic coarse-graining and dynamical simulations of anisotropic molecules with applications in organic semiconductors.” 2019. Web. 27 Feb 2021.

Vancouver:

Nguyen HTL. Systematic coarse-graining and dynamical simulations of anisotropic molecules with applications in organic semiconductors. [Internet] [Thesis]. University of Adelaide; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/120747.

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

Council of Science Editors:

Nguyen HTL. Systematic coarse-graining and dynamical simulations of anisotropic molecules with applications in organic semiconductors. [Thesis]. University of Adelaide; 2019. Available from: http://hdl.handle.net/2440/120747

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

9. Armistead, Sheree. Tectonic evolution of Madagascar over three billion years of Earth's history.

Degree: 2019, University of Adelaide

URL: http://hdl.handle.net/2440/120752

► Earth’s last major supercontinent, Gondwana, formed during the Neoproterozoic by convergence along the East African Orogen. Madagascar contains at least two Gondwana-forming suture zones, and… (more)

▼ Earth’s last major supercontinent, Gondwana, formed during the Neoproterozoic by convergence along the East African Orogen. Madagascar contains at least two Gondwana-forming suture zones, and hosts several suites of Neoproterozoic rocks that have been correlated with other Rodinian and Gondwanan terranes. Madagascar also hosts several Paleoproterozoic sedimentary sequences, which provide constraints on the Earth’s plate configuration from the Paleoproterozoic through to the early Cambrian. These factors make Madagascar an important place to study supercontinent assembly and dispersal throughout Earth’s history. In this thesis we integrate a range of isotopic, geochemical and structural datasets to decipher the timing and nature of tectonic events in these regions. A primary focus of this research is to constrain the location and timing of the controversial Betsimisaraka Suture in Madagascar and India. We have used detrital zircon U–Pb and Lu–Hf isotopes to constrain the location of this suture. We propose that the Karwar Block of western peninsular India is an extension of the western Dharwar Craton and not part of the Antananarivo Domain of Madagascar as has been suggested in some models. We also suggest that India was paleogeographically isolated from central Madagascar during the Paleoproterozoic. From northern Madagascar, we use magmatic zircon Hf and O isotopes to demonstrate that the northern component of the Bemarivo Domain is distinct from the southern part of the Bemarivo Domain. We propose that the northern terrane formed in a juvenile arc system that included the Seychelles, the Malani Igneous Suite of northwest India, Oman, and the Yangtze Belt of south China, which at the time were all outboard from continental India and south China. The final assembly of northern Madagascar and amalgamation of the northern and southern terranes occurred along the Antsaba subduction zone, with collision occurring at c. 540 Ma. In central Madagascar we have integrated remote sensing, field data and medium-temperature thermochronology (Rb–Sr mica and U–Pb apatite) to unravel complex deformation in the Ikalamavony and Itremo domains. We suggest deformation in west-central Madagascar formed in response to the c. 650 Ma collision of Azania with Africa along the Vohibory Suture in southwestern Madagascar. In eastern Madagascar, deformation is syn- to post-550 Ma, which formed in response to the final closure of the Mozambique Ocean along the Betsimisaraka Suture. A series of Paleoproterozoic sedimentary sequences overlie many of the domains in Madagascar. New U–Pb and Lu-Hf isotopes from a range of these sequences are indistinguishable from each other, and we therefore refer to these sequences as the Greater Itremo Group. We correlate these with equivalent sedimentary sequences in the Muva Supergroup in the Tanzania Craton and define an epicontinental Itremo-Muva Basin. We show that the Greater Itremo Group is distinct from Indian samples, and therefore India and Madagascar were not contiguous during the Paleoproterozoic. The… Advisors/Committee Members: Collins, Alan (advisor), School of Physical Sciences (school).

Subjects/Keywords: Geology; tectonics; Madagascar; zircon; isotope geochemistry

12 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Armistead, S. (2019). Tectonic evolution of Madagascar over three billion years of Earth's history. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/120752

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):

Armistead, Sheree. “Tectonic evolution of Madagascar over three billion years of Earth's history.” 2019. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/120752.

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

MLA Handbook (7^th Edition):

Armistead, Sheree. “Tectonic evolution of Madagascar over three billion years of Earth's history.” 2019. Web. 27 Feb 2021.

Vancouver:

Armistead S. Tectonic evolution of Madagascar over three billion years of Earth's history. [Internet] [Thesis]. University of Adelaide; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/120752.

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

Council of Science Editors:

Armistead S. Tectonic evolution of Madagascar over three billion years of Earth's history. [Thesis]. University of Adelaide; 2019. Available from: http://hdl.handle.net/2440/120752

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

10. Alessio, Brandon L. The tectonic evolution of the southern Congo Craton.

Degree: 2019, University of Adelaide

URL: http://hdl.handle.net/2440/119971

► Constraining the evolution of continents, and the tectonic plates they reside upon, enables geoscientists to understand phenomena such as mantle dynamics, mineral and energy resource… (more)

▼ Constraining the evolution of continents, and the tectonic plates they reside upon, enables geoscientists to understand phenomena such as mantle dynamics, mineral and energy resource distribution, faunal evolution, and climate development. Thus, there is an underlying necessity to have rigorous palaeogeographic models that constrain plate reconfiguration and interaction throughout earth history. The Congo Craton encompasses present-day central Africa, and is comprised of Archean crustal blocks and Proterozoic orogens. The southern margin of this craton acted as a plate boundary from the Palaeoproterozoic to present. However, the evolution of this margin remains largely enigmatic. This thesis interrogates the tectonic evolution Southern Irumide Belt (SIB), a predominantly Mesoproterozoic orogen located along the southern Congo margin, which serves as a vital proxy for understanding the evolution of the Congo Craton. U–Pb dating of detrital zircons from metasedimentary rocks within the Zambian terranes of the SIB identifies Palaeoproterozoic to Mesoproterozoic age populations that are equivalent to those preserved in the Muva Supergroup, found in the Irumide Belt (sensu stricto) of the Congo Craton. This depositional connection between the SIB and Congo Craton prior to the late-Mesoproterozoic is supportive of a tectonic model where the SIB formed on the southern Congo margin. Neoproterozoic sedimentary rocks identified in the Nyimba–Sinda Terrane highlight subsequent extension in the region that is likely a response to rifting. Full-plate topological models suggest that this rifting was a southern extension of the spreading that separated Australia from Laurentia during Rodinia break-up. An isotopic and geochronological investigation of intrusions throughout this region suggest that the SIB formed on an isotopically evolved Palaeoproterozoic basement. This is equivalent to basement in the neighbouring Irumide Belt, and further supports the SIB forming on the southern Congo margin. During the late stages of Gondwana amalgamation, the Congo Craton collided with the Kalahari Craton to form central Gondwana, generating tectono-metamorphic overprints that are displayed in the rocks of the Southern Irumide and Zambezi belts. These overprints record amphibolite to granulite facies mineral assemblages, and include more exotic, high-pressure ‘whiteschist’ assemblages. An activity-composition model was created for yoderite, a key mineral in whiteschists, for use with the pressure–temperature (P–T) modelling software THERMOCALC. Using this model, P–T diagrams were calculated for both a retrogressed whiteschist and metapelite from the region, to constrain the features of the Gondwana forming collision. A thermal gradient of 30–90 °C/kbar was calculated for the whiteschist, consistent with those calculated for peak metamorphism, whereas a gradient of 70–165 °C/kbar was calculated for the metapelite. The different thermal gradients relate to different aspects of the collision. Where the amphibolite facies rocks formed in a… Advisors/Committee Members: Collins, Alan (advisor), School of Physical Sciences (school).

Subjects/Keywords: Congo Craton; Southern lrumide Belt; lrumide Belt; Zambia; Geochronology; Thermochronology; Metamorphism; Zircon; Apatite; Thermocalc; Whiteschist; Yoderite

11 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Alessio, B. L. (2019). The tectonic evolution of the southern Congo Craton. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119971

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):

Alessio, Brandon L. “The tectonic evolution of the southern Congo Craton.” 2019. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119971.

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

MLA Handbook (7^th Edition):

Alessio, Brandon L. “The tectonic evolution of the southern Congo Craton.” 2019. Web. 27 Feb 2021.

Vancouver:

Alessio BL. The tectonic evolution of the southern Congo Craton. [Internet] [Thesis]. University of Adelaide; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119971.

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

Council of Science Editors:

Alessio BL. The tectonic evolution of the southern Congo Craton. [Thesis]. University of Adelaide; 2019. Available from: http://hdl.handle.net/2440/119971

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

11. Hardy, Robert. Photo-Ionisation and Density Functional Theory Studies of Gold Doped Cerium Oxide Clusters.

Degree: 2018, University of Adelaide

URL: http://hdl.handle.net/2440/120223

► This thesis presents experimental and theoretical work on small cerium oxide (CemOn, m=2,3; n=0-2m) and gold-doped cerium oxide (AuCemOn, m=2,3; n=0-2m) clusters. These cluster systems… (more)

▼ This thesis presents experimental and theoretical work on small cerium oxide (CemOn, m=2,3; n=0-2m) and gold-doped cerium oxide (AuCemOn, m=2,3; n=0-2m) clusters. These cluster systems are considered as simple models for larger gold-ceria systems which have shown potential for use as catalysts in low-temperature CO oxidation processes. Experimental work is also presented for the Ce4On (n=0-5) clusters without any supporting computational data. CemOn and AuCemOn clusters are prepared in the gas phase via dual laser ablation and detected experimentally using Time-of-Flight Mass Spectrometry (TOFMS) coupled with threshold laser ionisation. Photo-Ionisation Efficiency (PIE) spectroscopy is performed on the cluster ions detected in the mass spectra following photo-ionisation (which include the Ce2, Ce2O, Ce2O2, Ce3, Ce3O, Ce3O2, Ce3O3, Ce3O4, Ce4, Ce4O, Ce4O2, Ce4O3, Ce4O4, Ce4O5, AuCe2, AuCe2O, AuCe2O2, AuCe3, AuCe3O, AuCe3O2 and AuCe3O3 species) over the 3.92 – 5.17 eV (240 – 315.75 nm) energy range to record the depletion of each cluster ion with decreased photon energy. Experimental PIE spectra are presented for these species. The highly oxidised Ce2O3, Ce2O4, Ce3O5, Ce3O6, AuCe2O3, AuCe2O4, AuCe3O4, AuCe3O5 and AuCe3O6 cluster ions – which approach the stochiometric n=2m ratio of bulk ceria - are either not detected or are detected in trace quantities in all photo-ionisation mass spectra recorded during this work. DFT calculations are used to identify the lowest energy structures for each cluster species and their corresponding cationic states. Potential ionisation transitions for each cluster are investigated using Zero Electron Kinetic Energy simulations which are subsequently combined and integrated to produce a calculated PIE spectrum. The calculated and experimental PIE spectra are then compared to (i) ascertain the adiabatic ionisation energy (IE) for each cluster species and (ii) verify that the geometric and electronic properties of the relevant cluster species can be inferred from their DFT-calculated structures. Excellent agreement is found between the experimental and calculated PIE spectra for all CemOn and AuCemOn (m=2,3; n=0-2m) cluster species detected in this work. Moreover, DFT calculations predict high ionisation energies for all cluster species not detected in the photo-ionisation mass spectra. The interactions between cerium oxide and adsorbed gold atoms – and their subsequent effects on catalytic CO oxidation – are explored via calculations which involve comparison of the undoped and gold-doped geometric structures, Hirshfeld charges, HOMO/LUMO energies and bonding energies (involving O, Au and CeO2 fragments). The preferential site of Au deposition on the CemOn cluster is found to vary with oxidation; the Au atom adsorbs to an oxygen vacancy site on highly reduced CemOn clusters [AuCe2On (n=0-3); AuCe3On (n=0-4) and CeO3 and CeO2 vacancy sites on moderately reduced and stoichiometric clusters, respectively (i.e. AuCe2O4, AuCe3O5, AuCe3O6). Both Au→Ce and Ce→Au charge transfer mechanisms are… Advisors/Committee Members: Metha, Greg (advisor), School of Physical Sciences (school).

Subjects/Keywords: cluster; gold; cerium oxide; catalyst; photo-ionisation efficiency spectroscopy; zero electron kinetic energy; density functional theory

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Hardy, R. (2018). Photo-Ionisation and Density Functional Theory Studies of Gold Doped Cerium Oxide Clusters. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/120223

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):

Hardy, Robert. “Photo-Ionisation and Density Functional Theory Studies of Gold Doped Cerium Oxide Clusters.” 2018. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/120223.

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

MLA Handbook (7^th Edition):

Hardy, Robert. “Photo-Ionisation and Density Functional Theory Studies of Gold Doped Cerium Oxide Clusters.” 2018. Web. 27 Feb 2021.

Vancouver:

Hardy R. Photo-Ionisation and Density Functional Theory Studies of Gold Doped Cerium Oxide Clusters. [Internet] [Thesis]. University of Adelaide; 2018. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/120223.

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

Council of Science Editors:

Hardy R. Photo-Ionisation and Density Functional Theory Studies of Gold Doped Cerium Oxide Clusters. [Thesis]. University of Adelaide; 2018. Available from: http://hdl.handle.net/2440/120223

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

University of Adelaide

12. Dew, Romana Elysium Carthew. Tectonic evolution and palaeogeography of Thailand.

Degree: 2019, University of Adelaide

URL: http://hdl.handle.net/2440/120460

► The tectonic evolution and palaeogeography of Thailand requires refinement, especially the origin and nature of the basement, the relative position of the three main Thai… (more)

▼ The tectonic evolution and palaeogeography of Thailand requires refinement, especially the origin and nature of the basement, the relative position of the three main Thai terranes from their genesis to their amalgamation, the location of the terrane boundaries and the exact timing of the amalgamation of Thailand. This thesis endeavours to better unravel the tectonic evolution and palaeogeography of the three major Thai terranes: Indochina, Sukhothai and Sibumasu. But, it aims to do this by coupling disparate geological disciplines from palaeontology and sedimentology of the SW margin of Indochina to igneous geochemistry and detrital geochronology; Thailand-wide. Magmatic zircon Lu–Hf and whole-rock Sm–Nd data and model ages illustrate that the Indochina Terrane is relatively juvenile and distinct from the Sibumasu Terrane. The latter is composed of considerable Archean–Paleoproterozoic material. The granitoids of the Sukhothai Terrane are syn-collisional and are isotopically intermediate between Indochina and Sibumasu. I interpret this to reflect juvenile magmatism that is contaminated by evolved crustal material, which is likely to be from the leading edge of the Sibumasu Terrane as it enters the subduction zone during the closure of the Palaeo-Tethys Ocean. Detrital zircon analysis from Neoproterozoic–Triassic sequences from the Sibumasu Terrane track the terrane’s evolution from the Australian margin of Gondwana to its collision with the terranes of present-day Asia. The detrital record in conjunction with other palaeontological and stratigraphic evidence, indicates that during the early Permian, Sibumasu was still connected with Australia. In contrast, analysis of the biostratigraphy of the Khao Khwang Platform demonstrates this region of the Indochina Terrane was part of a tropical shallow marine environment from the Yakhtashian–Midian (Tethyan equivalents to middle Cisuralian to late Guadalupian). This biostratigraphic analysis revealed the presence of several separate carbonate platforms dominated by four major middle Permian facies: peritidal, platform interior, algal reef and basin slope, which are dated using foraminifera and algae. The comparison of the detrital zircon population spectra from Permo-Triassic sandstones across Thailand provides further evidence for the shared and separate parts of their tectonic histories. Primarily, the ages found in the Sibumasu Terrane are typical of provenance within Gondwana and contain both juvenile and evolved Hf signatures. In contrast, in the Sukhothai Terrane, the predominant age peak is 296–207 Ma and contains εHf(t) values that correspond to the isotopic signatures of the synchronous Sukhothai granitoids. Detrital data from the Triassic Huai Hin Lat Formation of the Indochina Terrane contain zircon age populations and characteristics similar to those of the South China Terrane. These results have implications for research on the Tethys Oceans, not only within Thailand but also for research conducted on greater Southeast Asian tectonics. Additionally, this study… Advisors/Committee Members: Collins, Alan Stephen (advisor), School of Physical Sciences (school).

Subjects/Keywords: geology; Thailand; palaeogeography; zircon; provenance; tectonics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Dew, R. E. C. (2019). Tectonic evolution and palaeogeography of Thailand. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/120460

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):

Dew, Romana Elysium Carthew. “Tectonic evolution and palaeogeography of Thailand.” 2019. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/120460.

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

MLA Handbook (7^th Edition):

Dew, Romana Elysium Carthew. “Tectonic evolution and palaeogeography of Thailand.” 2019. Web. 27 Feb 2021.

Vancouver:

Dew REC. Tectonic evolution and palaeogeography of Thailand. [Internet] [Thesis]. University of Adelaide; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/120460.

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

Council of Science Editors:

Dew REC. Tectonic evolution and palaeogeography of Thailand. [Thesis]. University of Adelaide; 2019. Available from: http://hdl.handle.net/2440/120460

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

University of Adelaide

13. Rankine, Damien. Metal-organic frameworks containing dihydroxy motifs: control of phase formation and pore environments.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/119810

► This thesis is comprised of 4 manuscripts that form the results chapters 2 to 5. All manuscripts were completed during candidature and have been published… (more)

▼ This thesis is comprised of 4 manuscripts that form the results chapters 2 to 5. All manuscripts were completed during candidature and have been published in international, peer-reviewed journals. The connections between these publications will be briefly presented here, tying in the content of each chapter with the overarching theme of this thesis. Herein, the use of ligand-bound hydroxyl groups, specifically potentially chelating dihydroxyl motifs, in support of carboxylate donors for the formation of novel Metal-organic Frameworks (MOFs) was explored using a rational design and modification approach. The multi-dentate ligand 2,2’-dihydroxy-1,1’-biphenyl-4,4’-dicarboxylic acid, that was used throughout this work, was utilised in both an ester protected form (Chapter 2) or with free phenol groups (Chapters 3-5). Careful control of synthetic conditions (e.g. choice of starting metal salt, co-ligand or reaction conditions) to dictate the desirable MOF phase and tailor final MOF characteristics was a major theme of investigation, along with the use of post-synthetic processing methods to access enhanced functionality within the pore structures of the resultant materials. A further focus was placed on establishing new synthetic, or post-synthetic, protocols for efficient synthesis of functional MOF materials. Chapter 1 serves to introduce the broad field of coordination polymers and inform the reader of seminal developments in the sub-field of metal-organic framework (MOF) chemistry, focussing on methods for controlling both the structure and internal pore environment of MOFs. A short review of pertinent literature concludes this chapter, highlighting the use of hydroxyl groups in the formation and application of MOFs. Influential examples of MOFs that incorporate hydroxyl groups into their structures and onto the backbone of the ligand moiety are discussed to highlight the potential of, and the opportunities, in this area. Chapter 2 presents a fundamental study into the incorporation of a biphenyl carboxylate ligand (2,2’-dihydroxy-1,1’-biphenyl-4,4’-dicarboxylic acid), with protected hydroxyl groups, into metal-organic frameworks. Predicable inclusion of such functional groups had previously proven difficult in cases where these groups can also function as donors for the MOF nodes and adopt a structural role. This manuscript describes an in situ method for MOF synthesis and deprotection of ester–protected hydroxyl functional groups with retention of crystallinity, eliminating the need for potentially degradative post–synthetic deprotection strategies. Reliable access to non-interpenetrated structures was realised with this method, as well as the post–synthetic incorporation of Cu(II) at the free diol moieties. Modification of the pore environment with dihydroxyl moieties, and subsequently with Cu(II) ions, resulted in increased pore size and improved enthalpy of CO2 adsorption at low pressures. Chapter 3 describes the direct use of 2,2’-dihydroxy-1,1’-biphenyl-4,4’-dicarboxylic acid in the synthesis of Ni(II) MOFs… Advisors/Committee Members: Sumby, Christopher J. (advisor), School of Physical Sciences (school).

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Rankine, D. (2016). Metal-organic frameworks containing dihydroxy motifs: control of phase formation and pore environments. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119810

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):

Rankine, Damien. “Metal-organic frameworks containing dihydroxy motifs: control of phase formation and pore environments.” 2016. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119810.

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

MLA Handbook (7^th Edition):

Rankine, Damien. “Metal-organic frameworks containing dihydroxy motifs: control of phase formation and pore environments.” 2016. Web. 27 Feb 2021.

Vancouver:

Rankine D. Metal-organic frameworks containing dihydroxy motifs: control of phase formation and pore environments. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119810.

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

Council of Science Editors:

Rankine D. Metal-organic frameworks containing dihydroxy motifs: control of phase formation and pore environments. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/119810

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

University of Adelaide

14. Reynolds, Tess. A Whispering Gallery Mode Microlaser Biosensor.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/119616

► A biological sensor, commonly referred to simply as a biosensor, is a transducing device that allows quantitative information about specific interactions, analytes or other biological… (more)

▼ A biological sensor, commonly referred to simply as a biosensor, is a transducing device that allows quantitative information about specific interactions, analytes or other biological parameters to be monitored and recorded. The development of biosensors that are low-cost, reliable and simple to use stand to facilitate fundamental breakthroughs and revolutionize current medial diagnostic methods. Notably, there remains an unmet need for developing in-vivo biosensors, allowing insights to be directly gained from the precise location of biological interactions within the human body. Over the last two decades, whispering gallery modes (WGM) within microresonators have emerged as a promising technology for developing highly sensitive and selective biosensors, among many other applications. However, significant work remains to allow WGM sensors to make the transition from primarily being used within purely research environments to real-world applications. Specifically, one of the key limiting factors is the requirement of an external phase-matched coupling scheme (such as a tapered or angle polished optical fiber, prism or waveguide) to excite the WGMs, despite these devices displaying tremendous sensing performance. One way to lift this dependency on complex interrogation schemes is introduce a gain medium, such as a fluorescent dye or coating the resonator with quantum dots for example, thereby rendering it active and allowing remote excitation and collection of the WGM spectrum. Using active WGM resonators has allows the creation of novel sensing opportunities such as tagging, tracking and monitoring forces from insides living cells. Applications like these could not have been realized using external phase-matched coupling schemes. The biosensing platform presented here is based on combining WGM within active microspherical resonators with microstructured optical fibers (MOF). The MOF enables both the excitation and collection method for the WGM spectrum while simultaneously providing a robust and easy to manipulate dip sensing architecture that has the potential to address the unmet need for real time labelfree in-vivo sensing by combining with a catheter. The platform is investigated fundamentally as well as experimentally, beginning with the development of an analytical model that is able to generate the WGM spectrum of active microspherical resonators. This provides the opportunity to pinpoint the optimal choice of resonator to be used for undertaking refractive index based biosensing. Specifically by being able to extract the quality (Q) factor, a measure of the resonance linewidth, and refractive index sensitivity from the WGM spectrum, the optimal combination of resonator parameters (diameter and resonator refractive index) can be identified for optimizing the resonators sensing performance. Further, the availability, biocompatibility and cost, as well as fabrication requirements can be also considered when selecting the ideal resonator. Next, the inherently lower Q-factors observed in active resonators compared… Advisors/Committee Members: Monro, Tanya M (advisor), School of Physical Sciences (school).

Subjects/Keywords: Biological sensing; microresonators; laser resonators; fiber optic sensors

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Reynolds, T. (2017). A Whispering Gallery Mode Microlaser Biosensor. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119616

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):

Reynolds, Tess. “A Whispering Gallery Mode Microlaser Biosensor.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119616.

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

MLA Handbook (7^th Edition):

Reynolds, Tess. “A Whispering Gallery Mode Microlaser Biosensor.” 2017. Web. 27 Feb 2021.

Vancouver:

Reynolds T. A Whispering Gallery Mode Microlaser Biosensor. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119616.

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

Council of Science Editors:

Reynolds T. A Whispering Gallery Mode Microlaser Biosensor. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/119616

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

University of Adelaide

15. Ramm, Daniel Paul Norman. An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions.

Degree: 2018, University of Adelaide

URL: http://hdl.handle.net/2440/119799

► Clinical radiotherapy treatments using linear accelerator (linac) generated megavoltage xray beams are planned using computer models that calculate patient specific three dimensional (3D) radiation dose… (more)

▼ Clinical radiotherapy treatments using linear accelerator (linac) generated megavoltage xray beams are planned using computer models that calculate patient specific three dimensional (3D) radiation dose distributions. Treatment planning system (TPS) calculated doses are evaluated by clinicians to ensure suitable dose coverage of targeted tumours and the avoidance of excessive doses to normal tissues. The accuracy of the TPS must be validated by measurement to ensure correct patient treatments. Traditional radiotherapy dosimeters do not measure dose entirely in 3D. They effectively ‘spot check’ accuracy at discrete points or planes, without the ability to fully visualise measured dose distributions in true 3D. True 3D dosimetry systems have been a subject of research for more than 3 decades. Gel dosimetry with optical computed tomography (CT) scanning using visible light wavelengths has been under investigation and development for much of this time. A lack of clinical uptake of the systems developed to date suggests that there are deficiencies or unappealing aspects, such as optical CT scanner maintenance and reliance upon optical expertise. Dosimetric accuracy of these systems also requires improvement, closer to accepted clinical dosimeters. In this work it was postulated that an optical CT scanner could be developed that is more efficient, practical and accurate than those demonstrated previously. This would address key aspects relating to clinical appeal. A specific application of stereotactic radiosurgery was targeted, where small dose distributions are delivered with high spatial accuracy to cranial tumours. Improvements in the practicality and efficiency of optical CT scanning were initially sought by elimination of the need for a refractive index (RI) matching fluid bath for scanning gel dosimeter samples. Optical simulations were used to investigate and identify suitable optical geometry that would enable fluid-less scanning for tomographic reconstruction. A prototype fluid-less optical CT scanner was constructed and the proof of concept was demonstrated using ferrous xylenol orange gel (FXG). The next phase of work was to develop the dosimetry system further, striving for dosimetric accuracy. The properties of the FXG dosimeter were studied by characterising the dose response, dose development, ion diffusion and thermochromism. The scanner was refined by addressing imaging artefacts, the addition of a reference detector and the development of a cuvette based dose calibration procedure. Standard procedures for gel manufacturing and handling, and for optical CT operation were developed to improve reproducibility of results. The system’s performance was assessed and its utility was demonstrated in the clinical application of linac radiosurgery and was also extended to brachytherapy 192Ir source verifications. Further improvements of system practicality and measurement quality were proposed by the concept of dual wavelength scanning. A second laser of a different wavelength… Advisors/Committee Members: Penfold, Scott (advisor), School of Physical Sciences (school).

Subjects/Keywords: Radiotherapy; Gel dosimetry; Optical CT scanner; 3D dosimetry

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ramm, D. P. N. (2018). An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119799

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):

Ramm, Daniel Paul Norman. “An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions.” 2018. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119799.

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

MLA Handbook (7^th Edition):

Ramm, Daniel Paul Norman. “An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions.” 2018. Web. 27 Feb 2021.

Vancouver:

Ramm DPN. An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions. [Internet] [Thesis]. University of Adelaide; 2018. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119799.

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

Council of Science Editors:

Ramm DPN. An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions. [Thesis]. University of Adelaide; 2018. Available from: http://hdl.handle.net/2440/119799

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

University of Adelaide

16. Teo, Jesse. Studies of Metal-Organic Polyhedra: Synthesis and Applications in Gas Storage and Separation.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/119197

► Metal-organic polyhedra (MOPs) are a class of porous materials, comprised of metal ions and organic ligands, which form discrete cage-like structures. Possessing large internal void… (more)

▼ Metal-organic polyhedra (MOPs) are a class of porous materials, comprised of metal ions and organic ligands, which form discrete cage-like structures. Possessing large internal void volumes, the physical and chemical properties of MOPs can be tuned by appropriate selection of the metal and organic building units. The work presented in this thesis investigates the application of MOPs to environmentally significant gas storage and separation. The first chapter introduces MOPs as an emerging class of promising materials and discusses their historical development since the first examples of synthetic supramolecular structures. As microporous materials, MOPs demonstrate strong interactions with small molecules giving them promise as a medium for selective gas adsorption. These attributes are of interest in the areas of H2 storage and the capture of CO2. As such, Chapter 1 discusses the benefits and challenges of utilising porous materials in these areas. Chapter 2 presents synthetic routes to MOPs containing both internal and external functionalisation by modifying both the metal nodes and the organic components which constitute the supramolecular structure. Presented herein are the first permanently porous examples of this class of materials to incorporate two different metal elements into a single paddlewheel unit in a controlled manner. These bimetallic MOPs demonstrate a strong binding affinity as well as an impressive volumetric capacity for H2 gas furthering development of a suitable H2 storage solution. Chapter 3 explores the decoration of MOPs with various external functionality and the effect these motifs have on MOP packing in the crystalline matrix. The synthesis of several new organic pro-ligands and subsequent MOPs is also detailed within. A method of modelling single crystal X-ray diffraction data is described that provides insight into the interactions between MOP structures which are dominated by the chemistry of the MOP exteriors. The tendency of these large structural entities to reduce porosity is further studied using X-ray diffraction data and computational methods. The work in Chapter 4 focuses on the use of MOPs in a composite system rather than as a singular material. By combining MOPs with a highly permeable polymer, poly[1- (trimethylsilyl)-1-propyne] (PTMSP), a series of mixed matrix membranes are synthesised for application in separating N2 and CO2 gases, a challenge of global significance from both an environmental and economic perspective. The compatibility of these constituents is shown to have a significant impact on the physical properties as well as the gas separation performance of the resulting composites. Advisors/Committee Members: Sumby, Christopher (advisor), School of Physical Sciences (school).

Subjects/Keywords: Metal organic polyhedra; Gas storage; Supramolecular chemistry

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Teo, J. (2017). Studies of Metal-Organic Polyhedra: Synthesis and Applications in Gas Storage and Separation. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119197

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):

Teo, Jesse. “Studies of Metal-Organic Polyhedra: Synthesis and Applications in Gas Storage and Separation.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119197.

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

MLA Handbook (7^th Edition):

Teo, Jesse. “Studies of Metal-Organic Polyhedra: Synthesis and Applications in Gas Storage and Separation.” 2017. Web. 27 Feb 2021.

Vancouver:

Teo J. Studies of Metal-Organic Polyhedra: Synthesis and Applications in Gas Storage and Separation. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119197.

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

Council of Science Editors:

Teo J. Studies of Metal-Organic Polyhedra: Synthesis and Applications in Gas Storage and Separation. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/119197

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

University of Adelaide

17. Leong, Noby Charn Keng. Azobenzene-Modified Betacyclodextrin: Molecules, Materials and Molecular Devices.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/119198

► Cyclodextrins (CD) are naturally occurring macrocycles composed of alpha-1,4-linked D-glucopyranose units. CDs are common components in supramolecular chemistry owing to their ability to act as… (more)

▼ Cyclodextrins (CD) are naturally occurring macrocycles composed of alpha-1,4-linked D-glucopyranose units. CDs are common components in supramolecular chemistry owing to their ability to act as hosts to complex a wide variety of guests. Similarly, azobenzene has frequently been used in supramolecular chemistry as a photoswitchable moiety. We have explored the combined utility of CDs and azobenzene to explore supramolecular systems on the molecular, material and molecular device scale. Chapter 1 summarises CD and azobenzene chemistry. The applications of CDs are explored, including its use as components of polymeric hydrogels, mechanically interlocked molecules and molecular devices. Chapter 2 describes the attempted synthesis of three structural isomers of azobenzene-linked beta-CD dimers, in which the beta-CD substituent is attached to the para, meta or ortho position of both phenyl rings of azobenzene to give bis(6A-deoxy-beta-cyclodextrin-6A-yl)-4,4’-aminocarbonylazobenzene (p-beta-CD2az), bis(6A-deoxy-beta-cyclodextrin-6A-yl)-3,3’-aminocarbonylazobenzene (m-beta-CD2az) and bis(6A-deoxy-beta-cyclodextrin-6A-yl)-2,2’-aminocarbonylazobenzene (o-beta-CD2az), respectively. The aim of this research was to determine the effect of structural isomerisation on the photochemical properties of beta-CD dimers. The synthesis of p-beta-CD2az and m-beta-CD2az was successful, while the synthesis of o-beta-CD2az did not yield the desired compound. Instead, (6A-deoxy-beta-cyclodextrin-6A-yl)-2-aminocarbonyl-aminobenzene (beta-CDab) was produced. The photoisomerisation properties of p-beta-CD2az and m-beta-CD2az were examined by NMR and UV-vis spectroscopy. Chapter 3 investigated the host-guest complexation properties of beta-CD, beta-CDab and E-p-beta-CD2az. Three dyes were chosen as guests: cationic crystal violet (CV+), zwitterionic rhodamine B (RB) and anionic ethyl orange (EO-). The host-guest complexes were qualitatively studied by NMR spectroscopy. The complexation constants and thermodynamic parameters were determined by UV-vis spectroscopy. Chapter 4 explored the effect of guest modification on the host-guest complexation properties of beta-CD and beta-CDab. Four porphyrins were chosen as guests: meso-tetra(4-sulfonatophenyl)porphine (TSPP), meso-tetra(4-carboxyphenyl)porphine (TCPP), meso-tetra(4-N,N,N-trimethylanilinium)porphine (TMAP) and meso-tetra(N-methyl-4-pyridyl)porphine (TMPyP). The host-guest complexation properties were studied by NMR spectroscopy. The complexation constants and thermodynamic parameters were determined by UV-vis spectroscopy. Chapter 5 investigated the complexation between beta-CD, beta-CDab, E-p-beta-CD2az and E/Z-m-beta-CD2az and hydrophobe-substituted poly(acrylates) (PAA) in the formation of polymer hydrogels. The molecular-scale complexation properties were investigated to understand the factors that influence the bulk-material properties of the solutions. Three adamantane (AD) substituted PAAs were chosen for study, in which the length of the alkyl tether connecting the AD group to the PAA… Advisors/Committee Members: Kee, Tak W. (advisor), School of Physical Sciences (school).

Subjects/Keywords: Cyclodextrin; Azobenzene; Supramolecular chemistry; Host-guest chemistry; Hydrogels; Molecular devices

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Leong, N. C. K. (2017). Azobenzene-Modified Betacyclodextrin: Molecules, Materials and Molecular Devices. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119198

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):

Leong, Noby Charn Keng. “Azobenzene-Modified Betacyclodextrin: Molecules, Materials and Molecular Devices.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119198.

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

MLA Handbook (7^th Edition):

Leong, Noby Charn Keng. “Azobenzene-Modified Betacyclodextrin: Molecules, Materials and Molecular Devices.” 2017. Web. 27 Feb 2021.

Vancouver:

Leong NCK. Azobenzene-Modified Betacyclodextrin: Molecules, Materials and Molecular Devices. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119198.

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

Council of Science Editors:

Leong NCK. Azobenzene-Modified Betacyclodextrin: Molecules, Materials and Molecular Devices. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/119198

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

University of Adelaide

18. Voisin, Fabien. Environment Studies of Pulsar Wind Nebulae and Their Interactions with the Interstellar Medium.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/119266

► Pulsars, rapidly rotating neutron star born from the core-collapse of massive stars, convert a fraction of their rotational energy to accelerate electrons up to high… (more)

▼ Pulsars, rapidly rotating neutron star born from the core-collapse of massive stars, convert a fraction of their rotational energy to accelerate electrons up to high energies. The generated pulsar wind eventually reaches the termination shock and creates a pulsar wind nebula (PWN). There, the particles’ trajectories become randomized, and they produce radio to X-ray emission via synchrotron radiation; and TeV γ-ray emission from the interaction of high energy electrons with the Cosmic Microwave Background; and the infra-red emission from Galactic dust. Although progress has been made towards the understanding of the structure of the pulsar environment, several issues, such as the composition of the pulsar winds, still need to be addressed. Indeed, no direct evidence of hadronic components have yet been discovered inside the PWN. However, nearby dense molecular clouds could provide sufficient target particles for the potential hadrons from the PWN and its progenitor supernova remnant (SNR) to produce significant TeV emission via proton-proton (p-p) interaction. My work thus first consists of conducting interstellar matter (ISM) studies towards several PWNe using the 22-metre Mopra and the 4-metre Nanten radio telescopes. Among the studied PWNe, I particularly focus on HESS J1825−137 and its plausible association with the nearby unidentified TeV source HESS J1826−130. I have mapped the HESS J1826−130 region with Mopra in the 7 and 12 mm bands which, combined with the Nanten CO(1–0) survey and the GRS ¹³CO(1–0), enable an accurate analysis of the morphological and physical properties of several dense molecular clouds found in the line of sight. Interestingly, I have found a massive molecular cloud adjacent to the PWN HESS J1825−137 and overlapping the HESS J1826−130 TeV emission. From our mass estimates, I suggest that the cosmic-rays originating from the progenitor SNR of the pulsar PSRJ1826−1334 can significantly contribute to the TeV emission. We then attempt to model and predict spectral and morphological properties of the TeV emission from the propagation of high energy CRs and electrons, originating from the progenitor SNR and potentially from the PWN.We find that the resulting spectral shape of the TeV γ-ray emission is very sensitive to the diffusion coefficient of high energy particles inside molecular clouds. I also find that only a ‘slow’ diffusion’ of CRs (diffusion coefficient D(E) ∼ 10²⁶ √E/10GeV cm² s⁻¹) results in a significant contribution of the gamma-ray emission towards HESS J1826−130 at all energies. We finally notice that the contribution from hypothetical CRs escaping the PWN HESS J1825−137 is expected to be overshadowed by the contribution of CRs escaping the progenitor SNR. As one expects the latter’s contribution to decrease as time evolves while the former’s contribution to remain somewhat constant, I thus argue that older PWNe may be more suitable candidates to obtain direct evidence of CRs inside PWNe. Among the studied PWNe, I find that, based on simplistic diffusion studies, the ISM… Advisors/Committee Members: Rowell, Gavin (advisor), School of Physical Sciences (school).

Subjects/Keywords: Pulsar wind nebulae; gamma-ray astronomy; line emission study; cosmic-ray diffusion

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Voisin, F. (2017). Environment Studies of Pulsar Wind Nebulae and Their Interactions with the Interstellar Medium. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119266

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):

Voisin, Fabien. “Environment Studies of Pulsar Wind Nebulae and Their Interactions with the Interstellar Medium.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119266.

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

MLA Handbook (7^th Edition):

Voisin, Fabien. “Environment Studies of Pulsar Wind Nebulae and Their Interactions with the Interstellar Medium.” 2017. Web. 27 Feb 2021.

Vancouver:

Voisin F. Environment Studies of Pulsar Wind Nebulae and Their Interactions with the Interstellar Medium. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119266.

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

Council of Science Editors:

Voisin F. Environment Studies of Pulsar Wind Nebulae and Their Interactions with the Interstellar Medium. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/119266

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

19. Kostecki, Roman. Corrosion Detection: A Fibre Optic Approach.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/119273

► Corrosion is a multi-billion dollar problem faced by industry. High acquisition costs associated with modern military and civilian aircraft coupled with tighter budgets has resulted… (more)

▼ Corrosion is a multi-billion dollar problem faced by industry. High acquisition costs associated with modern military and civilian aircraft coupled with tighter budgets has resulted in the need for greater utilisation of existing aircraft eets. With advancing aircraft age there is increased possibility that protective coatings will break down or be damaged, resulting in exposure of the base material to the environment and an increased possibility of corrosion. Corrosion is most difficult to detect in inaccessible metallic structures within aircraft. Monitoring these areas requires a sensor capable of spatially resolved detection of corrosion (distributed measurements), so that the location of the detected corrosion can be determined. Optical fibre based sensors are inherently suited to distributed sensing and are typically in the order of only a few hundred microns in diameter making them very lightweight and suitable for embedding in otherwise inaccessible corrosion-prone areas. This thesis describes the development of an optical fibre based corrosion sensing element. Transition of exposed-core microstructured optical fibres from soft glass to silica is shown to provide a platform for optical fibre sensors requiring long term and/or harsh environmental applications while providing real time analysis anywhere along the fibres length. The portion of light guided outside of the glass core, often described as the `evanescent field,' is affected by the refractive index and absorption characteristics of the surrounding medium. Functionalising this core with chemosensors sensitive to corrosion by-products, turns the light guiding fibre into a corrosion sensing element, with which insitu kinetic measurements of accelerated corrosion in simulated aluminium aircraft joints is demonstrated. This provides a fibre optic approach for detection of corrosion inside the hidden part of structures and opens up new opportunities for distributed optical fibre chemical sensing with a capacity for long-term application in harsh environments. Advisors/Committee Members: Monro, Tanya (advisor), School of Physical Sciences (school).

Subjects/Keywords: Corrosion; Sensor; Smart structures; Nondestructive evaluation; Structural health monitoring; Fiber optic sensors; Microstructural fibers; Nanostructure fabrication; Optical sensing and sensors; Thin film devices and applications

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Kostecki, R. (2017). Corrosion Detection: A Fibre Optic Approach. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119273

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):

Kostecki, Roman. “Corrosion Detection: A Fibre Optic Approach.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119273.

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

MLA Handbook (7^th Edition):

Kostecki, Roman. “Corrosion Detection: A Fibre Optic Approach.” 2017. Web. 27 Feb 2021.

Vancouver:

Kostecki R. Corrosion Detection: A Fibre Optic Approach. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119273.

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

Council of Science Editors:

Kostecki R. Corrosion Detection: A Fibre Optic Approach. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/119273

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

University of Adelaide

20. McFadden, Aoife. Uncovering the role of biomineralisation in otolith trace element uptake by microstructural and microchemical analysis.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/118860

► Otolith biomineralisation was examined in order to uncover its role in trace element uptake within otolith structures by microstructural and chemical analysis. The mechanism of… (more)

▼ Otolith biomineralisation was examined in order to uncover its role in trace element uptake within otolith structures by microstructural and chemical analysis. The mechanism of otolith elemental incorporation, the orientation of aragonite and the organic matrix in otoliths of four marine species were investigated in conjunction with the otolith growth patterns and the distribution of trace and minor elemental composition. Results for otoliths of Platycephalus bassensis, Chrysophrys auratus, Trachurus novaezelandiae and Lates calcarifer suggest a common biomineralisation mechanism for marine species, with consistent results across all species. The aragonite orientation, as mapped by electron backscatter diffraction (EBSD), revealed the aragonite c-axis was preferentially aligned parallel with the otolith growth axis and perpendicular to the insoluble organic matrices orientation, as determined by Raman microspectroscopy, in the otoliths of Platycephalus bassensis, Chrysophrys auratus, Trachurus novaezelandiae and Lates calcarifer. The orientation results indicate that otolith mineral growth is directed and controlled by the organic matrix, which acts as a template for the mineral growth, constraining the aragonite orientation and alignment. The organic rich zones (D-zone bands) within the otolith were composed of both insoluble and soluble organic matrices in all four species, with the insoluble matrices bridging the gap between mineral rich zones (L- zone bands) so as to retain crystal orientation across the otolith. Optimisation of electron probe microanalysis (EPMA) quantitative mapping achieved both high spatial resolution (<3 μm) and two dimensional visualisation of the fine scale Sr and S distributions in the otoliths with minimal otolith damage. The otolith growth patterns showed a clear association with the distribution of Sr and S, with D-zone bands exhibiting elevated concentrations of both elements as compared to the L-zone bands. Further examination by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) showed that incorporation of Mg and Ba appears independent of both the S distribution and the growth patterns in all four species. The results suggest that element incorporation into the otolith is linked to the organic composition in the endolymph during mineralisation, and the organic matrices may in part assist the uptake of Sr. The study revealed that whilst the otolith biomineralisation is directed and templated, with aragonite orientation constrained by the insoluble organic matrices, this process has no direct influence over trace element uptake. The association between the distribution of Sr, S and the organic matrices within the otoliths suggests however that the soluble organic matrices may play a role in trace element incorporation, particularly Sr incorporation. These findings may therefore have significant implications for the interpretation of otolith Sr chemistry. Advisors/Committee Members: Harris, Hugh (advisor), School of Physical Sciences: Chemistry (school).

Subjects/Keywords: Otoliths; biomineralisation; biochemistry; trace element analysis

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

McFadden, A. (2016). Uncovering the role of biomineralisation in otolith trace element uptake by microstructural and microchemical analysis. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/118860

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):

McFadden, Aoife. “Uncovering the role of biomineralisation in otolith trace element uptake by microstructural and microchemical analysis.” 2016. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/118860.

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

MLA Handbook (7^th Edition):

McFadden, Aoife. “Uncovering the role of biomineralisation in otolith trace element uptake by microstructural and microchemical analysis.” 2016. Web. 27 Feb 2021.

Vancouver:

McFadden A. Uncovering the role of biomineralisation in otolith trace element uptake by microstructural and microchemical analysis. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/118860.

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

Council of Science Editors:

McFadden A. Uncovering the role of biomineralisation in otolith trace element uptake by microstructural and microchemical analysis. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/118860

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

University of Adelaide

21. Al Darwish, Ruqaya O. Investigation of timepix radiation detector for autoradiography and microdosimetry in targeted alpha therapy.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/119776

► The Timepix detector developed by CERN is a novel and sophisticated particle detector. It consists of a semiconductor layer divided into an array of pixels.… (more)

▼ The Timepix detector developed by CERN is a novel and sophisticated particle detector. It consists of a semiconductor layer divided into an array of pixels. This array of pixels is bumpbonded to an electronics integrated layer (i.e. the readout chip). Timepix can be used for a wide range of measurements of electromagnetic radiation and particles and their applications in different fields such as space physics, nuclear physics, radiotherapy physics, imaging and radiation protection. The Timepix detector used in this work was purchased from Amsterdam Scientific Instruments, the Netherlands, in order to investigate its use for microdosimetry purposes, in particular in targeted alpha therapy. The device has the following properties: 256 x 256 pixels of 55 x 55 μm2 area each, the chip is effective for positive or negative charge and can be used to detect electrons, X-rays, neutrons and heavy charge particles. It can work as an energy spectrometer, has good spatial resolution and reason1ble detection efficiency. The device can operate in three common modes: Timepix mode, Medipix mode, and Time-Over-Threshold (TOT) mode. Targeted alpha therapy (TAT) is a novel type of radionuclide therapy in which an alpha emitting radioisotope is attached to a cancer cell seeking vector (so called radioimmunoconjugate (RIC)). Once attached to a cancer cell, it causes localized damage due to traversal and energy deposition high LET a-particles. There is, however, a lack of data related to a-particle distribution in TAT. These data are required to more accurately estimate the absorbed dose on a cellular level. As a result, this work aims to develop a microdosimetry technique, using Timepix detector that will estimate, or better yet determine the absorbed dose deposited by a-particles in cells as well as will measure the biodistribution of the radioisotope in a tumour. Initially, extensive Timepix characterization and testing has been done to evaluate the detector's response, including linearity, reproducibility, and sensitivity to low doses of radiations (μGy-mGy dose region) and energy dependence. 1-125 seeds and superficial X-rays (below 70 kVp), produced by the Gulmay superficial X-ray unit, were used. The measured Timepix pixel value was correlated with the known dose (based on the irradiation time used and TLD-100 measurements) and a pixel-value-to- dose calibration curve was obtained. It was confinned that Timepix value increased linearly with the dose delivered. The dose calibration curves using the superficial X-ray beams showed that the pixel value, however, depended on the energy of the X-ray beam. The application of Timepix to measure radioisotope biodistribution (i.e. autoradiography) was investigated. Mice with Lewis lung (LL2) tumours were treated with about 18 kBq oP27Thlabelled DAB4 murine monoclonal antibody that bounds to necrotic tumour cells. The rationale is to develop a-particle-mediated bystander kill of nearby viable tumour cells. To generate more necrotic tumour cells for 227Th-DAB4 binding, some mice also received… Advisors/Committee Members: Eva, Bezak (advisor), School of Physical Sciences (school).

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Al Darwish, R. O. (2016). Investigation of timepix radiation detector for autoradiography and microdosimetry in targeted alpha therapy. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119776

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):

Al Darwish, Ruqaya O. “Investigation of timepix radiation detector for autoradiography and microdosimetry in targeted alpha therapy.” 2016. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119776.

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

MLA Handbook (7^th Edition):

Al Darwish, Ruqaya O. “Investigation of timepix radiation detector for autoradiography and microdosimetry in targeted alpha therapy.” 2016. Web. 27 Feb 2021.

Vancouver:

Al Darwish RO. Investigation of timepix radiation detector for autoradiography and microdosimetry in targeted alpha therapy. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119776.

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

Council of Science Editors:

Al Darwish RO. Investigation of timepix radiation detector for autoradiography and microdosimetry in targeted alpha therapy. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/119776

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

University of Adelaide

22. Ahirwar, Saurabh Kumar. Exploring the monooxygenase activity and selectivity of two related Cytochrome P450 enzymes.

Degree: 2020, University of Adelaide

URL: http://hdl.handle.net/2440/127956

► The cytochrome P450 enzymes CYP101B1 and CYP101C1 from Novosphingobium aromaticivorans DSM12444 are homologues of the CYP101D1 and CYP101D2 enzymes from the same bacterium and CYP101A1… (more)

▼ The cytochrome P450 enzymes CYP101B1 and CYP101C1 from Novosphingobium aromaticivorans DSM12444 are homologues of the CYP101D1 and CYP101D2 enzymes from the same bacterium and CYP101A1 (P450cam) from Pseudomonas putida. Both enzymes can efficiently hydroxylate norisoprenoids and related substrates in combination with the same ferredoxin reductase, ArR and a [2Fe-2S] ferredoxin, Arx, electron transfer partners. Even though the physiological substrates for both the enzymes are yet to be confirmed, the crystal structure of CYP101C1 bound to β -ionone and modelled structure of CYP101B1 has been generated. The Met82 residue of CYP101C1 aligns with the His85 residue of CYP101B1. In the crystallographic structure, this Met82 residue of CYP101C1, interacts with the carbonyl group of β -ionone, which makes it an interesting site for mutation as these could potentially alter the activity and hydroxylation of norisoprenoid substrates. CYP101B1 oxidised ẞ -ionone with the highest product formation rate (1010 ± 60 min-1). The CYP101C1 enzyme oxidised β -ionol with the highest product formation rate (1130 ± 30 min-1), whereas, the M82L-CYP101C1 mutant enzyme had the highest product formation rate (790 ± 22 min-1) with α-ionone. The selectivity for hydroxylation of norisoprenoids varies between CYP101B1 and CYP101C1. The M82L mutation however, did not change the selectivity for CYP101C1. For example, both β -damascone and β -ionone were hydroxylated at the C4 position by CYP101C1 and the M82L-CYP101C1 mutant. The CYP101B1 enzyme displayed an altered selectivity and hydroxylated these substrates predominantly at C3 position. When the substrate functional group was changed from a carbonyl to an alcohol (i.e. β-ionol), the hydroxylation occurred preferentially at the C3 position with all three enzymes. By comparing the oxidation of α -, β - and δ - substituted damascones, we found that the alkene moiety present inside the cyclohexyl ring did have an effect on the selectivity of oxidation. The β - substituted substrates are oxidised only at the C3 position by all three enzymes. The β - substituted substrates are oxidised at C3 position by CYP101B1 and at C4 position by CYP101C1 and M82L-CYP101C1. The δ - substituted substrate generates the 3,4-epoxide as the major product. To further explore the substrate range of CYP101B1 and CYP101C1, various substrates including cyclic ketones and cyclic esters were assessed to see if they induce enzyme activity and binding to the enzyme. The combinations of the best enzyme / substrates were then chosen to generate the oxidation metabolites in a larger quantity using whole-cell oxidation system to enable characterisation. The oxidation of 1-decalone by CYP101B1 generated a single major metabolite along with two minor products. The major product was characterized as 6-hydroxy-1-decalone and the minor product as 7-hydroxy-1-decalone. Comparison of the 1-decalone substrate to damascones, highlight the relationship of the oxidation metabolites 6-hydroxy-1-decalone to 4-hydroxy- β -damascone and… Advisors/Committee Members: Bell, Stephen G. (advisor), School of Physical Sciences (school).

Subjects/Keywords: Cytochrome P450; Enzyme; monooxygenase oxidation; CYP10181; CYP101C1

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ahirwar, S. K. (2020). Exploring the monooxygenase activity and selectivity of two related Cytochrome P450 enzymes. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/127956

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):

Ahirwar, Saurabh Kumar. “Exploring the monooxygenase activity and selectivity of two related Cytochrome P450 enzymes.” 2020. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/127956.

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

MLA Handbook (7^th Edition):

Ahirwar, Saurabh Kumar. “Exploring the monooxygenase activity and selectivity of two related Cytochrome P450 enzymes.” 2020. Web. 27 Feb 2021.

Vancouver:

Ahirwar SK. Exploring the monooxygenase activity and selectivity of two related Cytochrome P450 enzymes. [Internet] [Thesis]. University of Adelaide; 2020. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/127956.

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

Council of Science Editors:

Ahirwar SK. Exploring the monooxygenase activity and selectivity of two related Cytochrome P450 enzymes. [Thesis]. University of Adelaide; 2020. Available from: http://hdl.handle.net/2440/127956

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

University of Adelaide

23. Bhowany, Kamini. Constraints on the fluid enhanced eclogitisation of granulite domains in the Bergen Arcs, Norway.

Degree: 2020, University of Adelaide

URL: http://hdl.handle.net/2440/127298

► High-pressure (HP) and ultra-high-pressure (UHP) terranes are often associated with the presence of fluids (e.g. hydrous mineral assemblages, pegmatite veins or melts). However, examples of… (more)

▼ High-pressure (HP) and ultra-high-pressure (UHP) terranes are often associated with the presence of fluids (e.g. hydrous mineral assemblages, pegmatite veins or melts). However, examples of progressive conversion of anhydrous mineral assemblages, to hydrous ones, are rare. Holsnøy Island is host to a unique setting whereby hydrous eclogite domains are perfectly preserved juxtaposing anhydrous granulite domains. The structural evolution of the system on Holsnøy Island can be observed via different stages, each indicated by an increase in fluid availability and degree of ductile deformation. This thesis identified 5 stages of deformation, based on structural cross-cutting relationships, and P–T condition estimations for four of the stages (1, 3, 4 and 5), using forward phase equilibria modelling. Stage 1 is the formation of pseudotachalytes and fractures in the granulite domains, which provide the initial pathway for the infiltration of fluid. The metamorphic overprint of the pseudotychylytes limit the occurrence of stage 1 of deformation to maximum P–T conditions of 15.2–15.7 kbar and 675–685 °C. Stage 2 of deformation is the formation of small-scale discrete shear zones along the partially hydrated domains. Mineralogically, this stage of deformation is indicated by the breakdown of garnet grains to form omphacite– kyanite–zoisite–plagioclase symplectites. Stage 3 of deformation is the formation of peak, sheared eclogite domains at P–T conditions of 21–22 kbar and 670–690 °C. Stage 4 of deformation is the formation of a retrogressed-eclogite (R-eclogite), a phengite-rich domain at P–T conditions 16–17 kbar and 680–700 °C. Lastly, is stage 5 of deformation, which is the retrogression of the system to amphibolite-facies at P–T conditions 11.8–12.8 kbar and 720–732 °C. Combined, these different stages of deformation illustrate the first calculated P–T path experienced by the Holsnøy domains (presented in Chapters 2 and 5). Systematic sampling of altered domains and their closest granulite protolith provided a comparative study, thus allowing the geochemical characterisation of the fluid infiltrating the Holsnøy granulites. Stage 3 of deformation has been interpreted to be rock-buffered based on whole-rock δ18O analyses, trace element chemistry, and Sm–Nd chemistry. In contrast, a fluid-buffered system was interpreted for stage 4 of deformation. Calculated δ18O and δD values for the fluid based on measured mineral isotopic values are consistent with a metamorphic fluid reservoir, interpreted in Chapter 2. Trace element analyses and Sm–Nd systematics, presented in Chapter 3, suggest the possibility of a sedimentary unit, with mafic components as a likely source of fluids for the eclogitisation of granulite domains on Holsnøy Island. Lastly, this thesis investigated the exhumation rates of the peak eclogite-facies altered domain (stage 3 of deformation). Calculated minimum exhumation rates of 41– 6122 mm/yr were obtained based on diffusion durations in zoned garnet grains, and constraints on pressure decrease from… Advisors/Committee Members: King, Rosalind (advisor), School of Physical Sciences (school).

Subjects/Keywords: Granulite; eclogite; fluid infiltration; stages of infiltration; stages of deformation; P-T constraints; ẟ18O; ẟD; stable isotops; trace elements; rare earth elements; Sm-Nd

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Bhowany, K. (2020). Constraints on the fluid enhanced eclogitisation of granulite domains in the Bergen Arcs, Norway. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/127298

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):

Bhowany, Kamini. “Constraints on the fluid enhanced eclogitisation of granulite domains in the Bergen Arcs, Norway.” 2020. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/127298.

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

MLA Handbook (7^th Edition):

Bhowany, Kamini. “Constraints on the fluid enhanced eclogitisation of granulite domains in the Bergen Arcs, Norway.” 2020. Web. 27 Feb 2021.

Vancouver:

Bhowany K. Constraints on the fluid enhanced eclogitisation of granulite domains in the Bergen Arcs, Norway. [Internet] [Thesis]. University of Adelaide; 2020. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/127298.

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

Council of Science Editors:

Bhowany K. Constraints on the fluid enhanced eclogitisation of granulite domains in the Bergen Arcs, Norway. [Thesis]. University of Adelaide; 2020. Available from: http://hdl.handle.net/2440/127298

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

24. Mitchell, Charlotte. Lateral and Vertical Geochemical Dispersion into Deep Cover: 4D Landscape Geochemistry and Biogeochemistry of the Barrier Ranges.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/119328

► The aim of this thesis is to determine the relative contribution of lateral, as opposed to vertical, dispersion of the geochemical signals of basement-hosted mineralisation… (more)

▼ The aim of this thesis is to determine the relative contribution of lateral, as opposed to vertical, dispersion of the geochemical signals of basement-hosted mineralisation in prospective geological provinces that are mantled by transported cover. The study focuses on three areas within and on the margins of, the highly-mineralised Broken Hill Block and the Barrier Ranges in western New South Wales. Fowlers Creek overlies low-grade metasedimentary bedrock with no known mineralisation on the eastern margins of the Barrier Ranges. Stream sediments show a downstream decreasing trend in concentrations in both Pb and Zn with values decreasing by 50% over 7 km of creek. Lead and Ag values were less important along Fowlers Creek in terms of biogeochemical results, with concentrations at background levels Pb 0.27 ppm and Ag 3.04 ppb. Rather, elements of interest along Fowlers Creek included; Cs, Y, U, Co and Ni. These elements peaked at 2 distinct points along the creek, by an order of magnitude above background, at points where the local geology interrupts the flow of the stream base aquifer (SBA). Pine Creek cross-cuts the partially exposed Pinnacles Pb-Zn-Ag mine. Stream sediment samples contain elevated concentrations of Pb, Zn and Ag (Pb 4.5x and Ag 3.5x background values observed along Fowlers and Umberumberka Creeks) for at least 4.5 km downstream of mineralisation. River red gum (RRG) leaves from trees within the creek provided the clearest delineation of the underlying mineralisation. Lead and Ag concentrations steadily increase toward mineralisation and reach concentrations 2.5 orders of magnitude above background immediately above mineralisation. Leaf samples collected after a severe El Niño event where the previous year’s rainfall was 188 mm, had Pb and Ag concentrations 5 -10 times greater than samples from the same trees collected after a La Niña event where the previous year’s rainfall was 605 mm. These results demonstrate that changes in available water plays on the SBA and the significant role it plays in diluting the resulting metal concentration within the trees and the importance of temporal variation. Umberumberka Creek is underlain by high-grade metamorphic rocks with numerous small mineral occurrences. Umberumberka Creek discharges at the western margin of the Broken Hill Block as an alluvial fan system which extends at least 10 km onto the Mundi Mundi Plain. This area is underlain by prospective bedrock but is buried by up to 150 m of transported sediments. On the plains, stream sediment results reflected a catchment average that was carried 10 km onto the plains before values decreased. Silver results on the plains had a mean value of 30 ppb and are comparable to soil survey results obtained by an exploration company over an area of Pb-Ag-Zn mineralisation identified beneath 150+ m of cover, situated on the fan floodout boundaries of Umberumberka Creek. The biogeochemical results for Umberumberka Creek fall within the same range of values as Fowlers creek, suggesting that these values are the natural… Advisors/Committee Members: Giles, David (advisor), School of Physical Sciences : Earth Sciences (school).

Subjects/Keywords: Geochemical dispersion; biogeochemistry; geochemistry; Broken Hill; Eucalyptus camaldulensis; mineral exploration; landscape geochemistry

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Mitchell, C. (2017). Lateral and Vertical Geochemical Dispersion into Deep Cover: 4D Landscape Geochemistry and Biogeochemistry of the Barrier Ranges. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/119328

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):

Mitchell, Charlotte. “Lateral and Vertical Geochemical Dispersion into Deep Cover: 4D Landscape Geochemistry and Biogeochemistry of the Barrier Ranges.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/119328.

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

MLA Handbook (7^th Edition):

Mitchell, Charlotte. “Lateral and Vertical Geochemical Dispersion into Deep Cover: 4D Landscape Geochemistry and Biogeochemistry of the Barrier Ranges.” 2017. Web. 27 Feb 2021.

Vancouver:

Mitchell C. Lateral and Vertical Geochemical Dispersion into Deep Cover: 4D Landscape Geochemistry and Biogeochemistry of the Barrier Ranges. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/119328.

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

Council of Science Editors:

Mitchell C. Lateral and Vertical Geochemical Dispersion into Deep Cover: 4D Landscape Geochemistry and Biogeochemistry of the Barrier Ranges. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/119328

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

University of Adelaide

25. Schumann, Nicholas. Inhibition of serine and cysteine proteases by peptidomimetic inhibitors.

Degree: 2017, University of Adelaide

URL: http://hdl.handle.net/2440/126464

► Proteases are responsible for the hydrolysis of proteins and peptides and have been implicated in the development of various diseases. Herein describes the design and… (more)

▼ Proteases are responsible for the hydrolysis of proteins and peptides and have been implicated in the development of various diseases. Herein describes the design and synthesis of reversible peptidomimetic inhibitors of serine and cysteine protease for the control of protease activity. Proteases recognise substrates’ secondary peptide structure which conforms to a saw-tooth arrangement of amino acids, known as an extended β-strand geometry. This property has led to the development of potent inhibitors which mimic this conformation. Chapter two discusses defining β-strand geometry in inhibitors, while maintaining key substituents necessary for recognition by protease hosts, by the replacement of N-terminal residues with heterocyclic constraints. The inclusion of a heterocycle both enforces backbone β-strand conformation while increasing inhibitor bioavailability and metabolic stability. A series of peptidomimetic inhibitors containing heterocycles, including pyrrole, furan, thiophene and pyridine were synthesised, and the associated inhibitory activities against a model serine protease, α-Chymotrypsin, determined in proteolytic assays. Of the series of heterocycles, pyrrole was determined to be the optimum heterocycle for inclusion in inhibitors of this class. Extension of this concept of constraint was investigated in the approach towards heterocycle-containing macrocycles constructed by ring-closing metathesis for the inhibition of cysteine Cathepsin proteases, where the introduction of a macrocyclic tether couples with the heterocyclic constraint to define the desired backbone β-strand geometry. Pyrrole-containing macrocycle 2.47 was constructed by ring-closing metathesis, but was found to be unstable to hydrogenation conditions. A similar pyridine-containing macrocycle 2.61 was successfully synthesised and hydrogenated, but was unable to be functionalised with appropriate C-terminal residues due to its poor solubility profile. Chapter three details the design and synthesis of a series of peptidomimetic inhibitors of the serine protease Hip1 which has been implicated with a host innate immune response pathway of Mycobacterium tuberculosis. Described is the synthesis of a library of tripeptides containing an electrophilic boronic ester at the C-terminus for reversible covalent attachment to the Hip1 active site and the associated inhibitory assay data. A lead compound, 3.23, which has exceptional potency of inhibition (low nM activity) was discovered, from which highly potent derivatives featuring a C-terminal aldehyde 3.44, α-keto heterocycle 3.49, and α-keto ester 3.58 were established. Further refinement of these inhibitors presents an opportunity for the development of therapeutics for the treatment of tuberculosis. Advisors/Committee Members: Abell, Andrew (advisor), George, Jonathan (advisor), School of Physical Sciences (school).

Subjects/Keywords: Protease; inhibitors; peptidomimetic; serine; cysteine

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Schumann, N. (2017). Inhibition of serine and cysteine proteases by peptidomimetic inhibitors. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/126464

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):

Schumann, Nicholas. “Inhibition of serine and cysteine proteases by peptidomimetic inhibitors.” 2017. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/126464.

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

MLA Handbook (7^th Edition):

Schumann, Nicholas. “Inhibition of serine and cysteine proteases by peptidomimetic inhibitors.” 2017. Web. 27 Feb 2021.

Vancouver:

Schumann N. Inhibition of serine and cysteine proteases by peptidomimetic inhibitors. [Internet] [Thesis]. University of Adelaide; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/126464.

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

Council of Science Editors:

Schumann N. Inhibition of serine and cysteine proteases by peptidomimetic inhibitors. [Thesis]. University of Adelaide; 2017. Available from: http://hdl.handle.net/2440/126464

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

University of Adelaide

26. Saffi, Steven Jason. Analysis of simulation and reconstruction methods used by the Pierre Auger Observatory.

Degree: 2020, University of Adelaide

URL: http://hdl.handle.net/2440/126037

► Though a great deal of knowledge has been gained on the physics of ultra-high energy cosmic radiation, many questions remain unanswered. The largest experiment to… (more)

▼ Though a great deal of knowledge has been gained on the physics of ultra-high energy cosmic radiation, many questions remain unanswered. The largest experiment to date, the Pierre Auger Observatory, has been built by an international collaboration to detect and measure the properties of cosmic rays at the highest energies with unprecedented statistics. The Pierre Auger Observatory is a hybrid detector, containing both a surface detector array, and a fluorescence detector. The surface detector array covers an area of 3000 km², consisting of ∼1600 water Čerenkov detectors, operating with a nearly 100% duty cycle. The Fluorescence detector overlooks the surface detector array with 27 telescopes, each containing 440 PMT’s, to measure the development of extensive air showers calorimetrically, operating on clear moonless nights. The two detectors each benefit each other, with the surface detector improving the geometric reconstruction of showers measured by the fluorescence detector, and the fluorescence detector providing an energy scale calibration for the surface detector. After over 15 years collecting data, the Pierre Auger Observatory is undergoing a number of upgrades, including upgrades to the surface detector to distinguish different particle types to better resolve the primary particles composition. This thesis contains a number of studies related to the detection of cosmic rays. First is an examination of the pointing directions of the fluorescence telescopes, where misalignments in both the pointing directions and in camera positions are found. Second, a new method of dethinning is developed, reducing biases introduced into detector simulations when thinning is employed in extensive air shower simulations. Third, with the ability to distinguish the muon component of extensive air showers being introduced in the upgrades, the shape of the muon shower front has been examined in simulated showers, to determine the feasibility of using the shape of the muon front for composition determination. Advisors/Committee Members: Dawson, Bruce (advisor), Bellido, Jose (advisor), School of Physical Sciences (school).

Subjects/Keywords: Cosmic ray; simulation; reconstruction; alignment; muon; resampling; extensive air shower; Pierre Auger Observatory

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Saffi, S. J. (2020). Analysis of simulation and reconstruction methods used by the Pierre Auger Observatory. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/126037

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):

Saffi, Steven Jason. “Analysis of simulation and reconstruction methods used by the Pierre Auger Observatory.” 2020. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/126037.

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

MLA Handbook (7^th Edition):

Saffi, Steven Jason. “Analysis of simulation and reconstruction methods used by the Pierre Auger Observatory.” 2020. Web. 27 Feb 2021.

Vancouver:

Saffi SJ. Analysis of simulation and reconstruction methods used by the Pierre Auger Observatory. [Internet] [Thesis]. University of Adelaide; 2020. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/126037.

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

Council of Science Editors:

Saffi SJ. Analysis of simulation and reconstruction methods used by the Pierre Auger Observatory. [Thesis]. University of Adelaide; 2020. Available from: http://hdl.handle.net/2440/126037

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

University of Adelaide

27. Hannaford Gunn, Alec. Generalised Parton Distributions from Lattice Feynman-Hellmann Techniques.

Degree: 2020, University of Adelaide

URL: http://hdl.handle.net/2440/126064

► Generalised parton distributions (GPDs) are observables that contain an abundance of previously inaccessible information about hadron structure. However, GPDs have proven di cult to measure… (more)

▼ Generalised parton distributions (GPDs) are observables that contain an abundance of previously inaccessible information about hadron structure. However, GPDs have proven di cult to measure from experiment, and rst principles calculations in lattice Quantum Chromodynamics (QCD) have largely been limited to their lowest Mellin moments. In this thesis, we outline a completely novel approach to determine GPD-related information using Feynman-Hellmann techniques in lattice QCD. We present both the formalisms that make this numerical computation possible, and an exploratory calculation using this method. The results appear very promising. First, we show how lattice Feynman-Hellmann techniques can be applied to calculate the o -forward Compton tensor (OFCT). The result is a relation between the OFCT and the energy shifts of a two-point function for a carefully chosen perturbed Lagrangian. Moreover, since the OFCT is both o -forward and second order, the Lagrangian mixes momentum eigenstates in a non-trivial way. Therefore, we also show how to control this mixing by a careful choice of the parameters in our perturbed Lagrangian. Second, we need a form of the OFCT with kinematics that are suitable for the Euclidean lattice. We use an operator product expansion to derive an expression for the leading order (twist-two) contribution to the OFCT in terms of the Mellin moments of GPDs. This result can be compared to a lattice calculation of the OFCT for large momentum transfer, and hence allows us to extract the moments of GPDs. Finally, we present our calculation of the Euclidean OFCT using lattice Feynman- Hellmann techniques. Our results exhibit behaviour that is consistent with the theoretical expressions derived in the previous chapters. We nd that the magnitude of our results is signi cantly larger than what is expected from a simple phenomenological model, but that the t dependence of our results is consistent with this model. As such, this study paves the way for a rst principles calculation of higher GPD moments. Moreover, it allows us to investigate the behaviour of the OFCT in the Euclidean region as it pertains to scaling, factorisation, and other properties of interest. Advisors/Committee Members: Young, Ross (advisor), Zanotti, James (advisor), School of Physical Sciences (school).

Subjects/Keywords: Lattice QCD; hadron structure; parton distributions; Feynman-Hellmann

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Hannaford Gunn, A. (2020). Generalised Parton Distributions from Lattice Feynman-Hellmann Techniques. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/126064

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):

Hannaford Gunn, Alec. “Generalised Parton Distributions from Lattice Feynman-Hellmann Techniques.” 2020. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/126064.

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

MLA Handbook (7^th Edition):

Hannaford Gunn, Alec. “Generalised Parton Distributions from Lattice Feynman-Hellmann Techniques.” 2020. Web. 27 Feb 2021.

Vancouver:

Hannaford Gunn A. Generalised Parton Distributions from Lattice Feynman-Hellmann Techniques. [Internet] [Thesis]. University of Adelaide; 2020. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/126064.

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

Council of Science Editors:

Hannaford Gunn A. Generalised Parton Distributions from Lattice Feynman-Hellmann Techniques. [Thesis]. University of Adelaide; 2020. Available from: http://hdl.handle.net/2440/126064

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

University of Adelaide

28. Filmer, Emily Kathleen. Searching for Four Top Quarks with the ATLAS Detector.

Degree: 2020, University of Adelaide

URL: http://hdl.handle.net/2440/126066

► The Standard Model predicts the existence of events containing four top quarks, but as yet they have not been experimentally observed. Here, the work focuses… (more)

Subjects/Keywords: physics; large hadron collider; top quark; multivariate analysis; particle physics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Filmer, E. K. (2020). Searching for Four Top Quarks with the ATLAS Detector. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/126066

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):

Filmer, Emily Kathleen. “Searching for Four Top Quarks with the ATLAS Detector.” 2020. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/126066.

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

MLA Handbook (7^th Edition):

Filmer, Emily Kathleen. “Searching for Four Top Quarks with the ATLAS Detector.” 2020. Web. 27 Feb 2021.

Vancouver:

Filmer EK. Searching for Four Top Quarks with the ATLAS Detector. [Internet] [Thesis]. University of Adelaide; 2020. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/126066.

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

Council of Science Editors:

Filmer EK. Searching for Four Top Quarks with the ATLAS Detector. [Thesis]. University of Adelaide; 2020. Available from: http://hdl.handle.net/2440/126066

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

University of Adelaide

29. Maddigan, Natasha Kate. Enzyme Immobilisation Using Porous Frameworks.

Degree: 2020, University of Adelaide

URL: http://hdl.handle.net/2440/126087

► Enzymes are often sought after for applications in industry and synthetic chemistry due to their high reactivity and substrate selectivity, often surpassing their chemical counterparts.… (more)

▼ Enzymes are often sought after for applications in industry and synthetic chemistry due to their high reactivity and substrate selectivity, often surpassing their chemical counterparts. They are, however, limited by their structural instability and require restrictive environmental conditions that are often not compatible with industrial processing. As such, new technologies are required to protect enzymes from non-biological conditions. This thesis investigates enzyme immobilisation using porous frameworks including metal-organic frameworks (MOFs) and hydrogen-bonded organic frameworks (HOFs). The diverse nature of both the enzyme and MOF/HOF components offers great potential for creating a broad library of biocomposites with novel function. There are however inherent challenges in finding appropriate conditions for immobilisation in which the enzyme remains active, and where the overall biocomposite is stable. Initial studies utilised Zeolitic Imidazolate Framework 8 (ZIF-8), a subclass of MOFs, for protein immobilisation. The addition of biomacromolecules, such as proteins, can promote the self-assembly of ZIF-8 by a process known as “biomimetic mineralisation”. Systematic screening studies established that this process is biomacromolecule dependent, with a subset of proteins requiring the addition of organic solvent or increased ligand concentrations to promote ZIF-8 nucleation. These reaction conditions were also instrumental in controlling the topology, morphology, and particle size of the biocomposites. Investigations into the influence of the protein revealed that biomimetic mineralisation is governed by the surface chemistry of the biomacromolecules, with a more negative surface charge promoting rapid nucleation, resulting from enhanced zinc ion concentration at the surface. Chemical functionalisation can be implemented, to alter the electrostatic potential of the protein surface and control the biomimetic mineralisation process. The biocomposites from different immobilisation strategies for ZIF-8 were assessed for biocatalytic activity using two distinct enzymes, a lipase, and a dehalogenase. The activity was analysed relative to the free enzyme to interrogate the impact of immobilisation on the function and stability of the biocatalyst. Variation in support stability and biocomposite activity were observed. Each were dependent on the method of immobilisation with some strategies yielding inactive or unstable biocomposites. For lipase, the ZIF-8 framework provided enzymatic stability to organic solvent, whilst the framework itself was susceptible to degradation by phosphate buffer. In the case of the dehalogenase biocomposite, substrate dependent crystal degradation was observed that was deemed responsible for variations in the observed enzyme activity. These findings highlight the potential limitations of ZIF-8 for enzyme immobilisation and as such, alternative porous supports were targeted. Framework chemistry and porosity were further investigated utilising Zeolitic Imidazolate Framework-90 (ZIF-90) and… Advisors/Committee Members: Bell, Stephen (advisor), Doonan, Christian (advisor), School of Physical Sciences (school).

Subjects/Keywords: enzyme immobilisation; metal-organic framework; hydrogen-bonded organic framework .; biocatalysis

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Maddigan, N. K. (2020). Enzyme Immobilisation Using Porous Frameworks. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/126087

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):

Maddigan, Natasha Kate. “Enzyme Immobilisation Using Porous Frameworks.” 2020. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/126087.

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

MLA Handbook (7^th Edition):

Maddigan, Natasha Kate. “Enzyme Immobilisation Using Porous Frameworks.” 2020. Web. 27 Feb 2021.

Vancouver:

Maddigan NK. Enzyme Immobilisation Using Porous Frameworks. [Internet] [Thesis]. University of Adelaide; 2020. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/126087.

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

Council of Science Editors:

Maddigan NK. Enzyme Immobilisation Using Porous Frameworks. [Thesis]. University of Adelaide; 2020. Available from: http://hdl.handle.net/2440/126087

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

University of Adelaide

30. Poulter, Harry David. Investigating the effect of primordial black hole Hawking radiation on the cosmic microwave background.

Degree: 2018, University of Adelaide

URL: http://hdl.handle.net/2440/118023

► Due in part to the recent gravitational wave events discovered by the LIGO collaboration, primordial black holes (PBHs) have made their way back in vogue… (more)

▼ Due in part to the recent gravitational wave events discovered by the LIGO collaboration, primordial black holes (PBHs) have made their way back in vogue as a possible dark matter candidate. Dynamically, PBHs are interesting objects as they have a mass-dependent energy injection mechanism. As such, their presence in the early universe would have interfered with the formation of the cosmic microwave background (CMB). This work examines the effect such injections would have on CMB formation through comparison with the latest Planck measurements. We consider light-mass PBHs in the range 10¹⁵ g to 10¹⁷g which inject energy through Hawking radiation. In this work we present a review of the current state-of-the-art models of recombination and their extensions which incorporate energy injections from nonstandard sources. We also give a basic introduction to Bayesian inference in the context of parameter inference, and explain in detail how nested sampling and the Planck likelihood code operate. With this knowledge, we create a new cosmological parameter estimation program, pc_multinest, which utilises the nested sampler MultiNest, the Boltzmann code class and the Planck likelihood code to place constraints on PBH parameter space. During the completion of the program, we also improve the existing HyRec recombination code to correctly account for large energy injections. We then reproduce the current limits on PBH fraction ƒPBH presented by Clark et al. [1], before extending the analysis to examine the effects a set of free ΛCDM parameters has on the resulting bounds. By allowing the base ΛCDM parameters to vary, we show the exclusion bounds are alleviated by a full order of magnitude across the mass range. We also present results extending the typical monochromatic mass distribution to a log normal one. Fixing the PBH fraction and allowing both the mean and standard deviation of the distribution to vary indicates that delta mass distributions are more sensitive to freeing ΛCDM parameters than a mass distribution with finite spread. Results for different PBH mass distributions show that increasing the spread of the mass distribution results in tighter constraints at heavier masses and a slight relaxation for masses MPBH ∼ 10¹⁵ g. For a uniform mass distribution, the 95% exclusion limits are independent of PBH mass, giving ƒPBH < 6.1 × 10⁻⁷ when base ΛCDM parameters are fixed and ƒPBH < 1.3 × 10⁻⁵ when they are allowed to vary. Advisors/Committee Members: White, Martin (advisor), Williams, Anthony (advisor), School of Physical Sciences (school).

Subjects/Keywords: Cosmology; physics; ΛCDM model; recombination; primordial black holes; black holes

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Poulter, H. D. (2018). Investigating the effect of primordial black hole Hawking radiation on the cosmic microwave background. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/118023

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):

Poulter, Harry David. “Investigating the effect of primordial black hole Hawking radiation on the cosmic microwave background.” 2018. Thesis, University of Adelaide. Accessed February 27, 2021. http://hdl.handle.net/2440/118023.

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

MLA Handbook (7^th Edition):

Poulter, Harry David. “Investigating the effect of primordial black hole Hawking radiation on the cosmic microwave background.” 2018. Web. 27 Feb 2021.

Vancouver:

Poulter HD. Investigating the effect of primordial black hole Hawking radiation on the cosmic microwave background. [Internet] [Thesis]. University of Adelaide; 2018. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2440/118023.

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

Council of Science Editors:

Poulter HD. Investigating the effect of primordial black hole Hawking radiation on the cosmic microwave background. [Thesis]. University of Adelaide; 2018. Available from: http://hdl.handle.net/2440/118023

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

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations