3,044 results for 2000, Masters

  • Environmental tolerances of resting stages of plumatellid bryozoans at Southern Reservoir, Dunedin, New Zealand

    Brunton, Michelle A (2005)

    Masters thesis
    University of Otago

    Freshwater bryozoans grow at Southern Reservoir, a water treatment station in Dunedin, New Zealand fouling surfaces in the microstrainer hall and requiring expensive and time consuming maintenance. Preventing or minimising germination is a potentially useful way to control bryozoan infestation. Germination trials were conducted to assess the effect of temperature, dry storage, and various chemicals on floatoblast germination. Plumatella vaihiriae is newly described from Southern Reservoir. A second, as yet unidentified, Plumatellid species was discovered through the presence of floatoblasts (Plumatella n. sp.). Storing dry floatoblasts of Plumatella n. sp. decreased germination. Storing dry floatoblasts of P. vaihiriae for 63 days or more prevented germination entirely. Sodium hydroxide, acid clean in place (CIP) and sulphuric acid were most successful of those chemical treatments tested in preventing germination of P. vaihiriae floatoblasts. Exposure to alkaline CIP and a combination of CIP solutions decreased germination of P. vaihiriae floatoblasts. Pre-heating acid CIP to 35°C prevented germination of P. vaihiriae floatoblasts. Exposure to alkaline CIP solutions at temperatures of 35°C and 50°C increased germination of P. vaihiriae and Plumatella n. sp. floatoblasts. The zooid wall provided protection for floatoblasts of P. vaihiriae from exposure to acid CIP. On initial release from the zooid P. vaihiriae floatoblasts produced in winter and early summer are obligate dormants entering a diapausal state for at least three weeks. As summer approaches P. vaihiriae floatoblasts become thermos-quiescent and germinate once temperatures increase. Dunedin City Council (DCC) water department staff must adhere to strict cleaning policies when moving both people and equipment between Southern Water Treatment Station and other water treatment stations and reservoirs. P. vaihiriae and Plumatella n. sp. floatoblasts could better sustain the effects of an acid environment during transport within a vector such as a water bird more so if eaten whilst within the zooid and remaining within the zooid walls during transport.

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  • Hybrid Solid-State Hydrogen Storage Materials

    Benge, Kathryn Ruth (2008)

    Masters thesis
    University of Waikato

    This thesis investigates the chemistry of ammonia borane (NH₃BH₃) relevant to the development of hydrogen storage systems for vehicular applications. Because of its high hydrogen content and low molecular weight ammonia borane has the potential to meet stringent gravimetric hydrogen storage targets of >9 wt%. Two of the three moles of H₂ in ammonia borane can be released under relatively mild conditions, with the highest gravimetric yield obtained in the solid-state. However, ammonia borane does not deliver sufficient H₂ at practical temperatures and the products formed upon H₂ loss are not amenable to regeneration back to the parent compound. The literature synthesis of ammonia borane was modified to facilitate large scale synthesis, and the deuterated analogues ND₃BH₃ and NH₃BD₃ were prepared for the purpose of mechanistic studies. The effect of lithium amide on the kinetics of dehydrogenation of ammonia borane was assessed by means of solid-state reaction in a series of specific molar ratios. Upon mixing lithium amide and ammonia borane, an exothermic reaction ensued resulting in the formation of a weakly bound adduct with an H₂N...BH₃-NH₃ environment. Thermal decomposition at or above temperatures of 50◦C of this phase was shown to liberate >9 wt% H₂. The mechanism of hydrogen evolution was investigated by means of reacting lithium amide and deuterated ammonia borane isotopologues, followed by analysis of the isotopic composition of evolved gaseous products by mass spectrometry. From these results, an intermolecular multi-step reaction mechanism was proposed, with the rates of the first stage strongly dependent on the concentration of lithium amide present. Compounds exhibiting a BN₃ environment (identi-fied by means of solid-state ¹¹B NMR spectroscopy) were formed during the first stage, and subsequently cross link to form a non-volatile solid. Further heating of this non-volatile solid phase ultimately resulted in the formation of crystalline Li₃BN₂ - identified by means of powder X-ray diffractometry. This compound has been identified as a potential hydrogen storage material due to its lightweight and theoretically high hydrogen content. It may also be amenable to hydrogen re-absorption. The LiNH₂/CH₃NH₂BH₃ system was also investigated. Thermal decomposition occurred through the same mechanism described for the LiNH₂/NH₃BH₃ system to theoretically evolve >8 wt% hydrogen. The gases evolved on thermal decomposition were predominantly H₂ with traces of methane detected by mass spectrometry.

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  • Pavlova and pineapple pie : mixed parentage and Samoan-Pakeha identities in New Zealand

    Keddell, Emily (2000)

    Masters thesis
    University of Otago

    x, 168 leaves :ill., forms ; 30 cm. Includes bibliographical references. University of Otago department: Community and Family Studies

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  • Visitor perspectives of ecotourism in the Maldives

    Ismail, Ikleela (2008)

    Masters thesis
    University of Otago

    Description: x, 159 leaves : ill. (some col.), forms, maps ; 30 cm. Notes: "March 2008". University of Otago department: Tourism. Thesis (M. Tour.)--University of Otago, 2009. Includes bibliographical references.

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  • Charles Begg and Company Limited : the story of music in New Zealand is the history of Begg's

    Gleeson, Jean Clare (2009)

    Masters thesis
    University of Otago

    viii, 143 leaves :ill., maps ; 30 cm. Includes bibliographical references. "December 2009". University of Otago department: History

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  • Growth and movement of Blue Cod (Parapercis colias) in Paterson Inlet, Stewart Island, New Zealand

    Govier, Daniel (2001)

    Masters thesis
    University of Otago

    ix, 142 leaves :ill., map ; 30 cm. Bibliography: leaves 134-142. "December 2001." University of Otago department: Marine Science.

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  • Antarctic gateway cities & contemporary mobility : a comparative analysis of the two Antarctic gateway cities of Christchurch & Hobart

    Grace, Michael Russell Ian (2005)

    Masters thesis
    University of Otago

    vii, 45 leaves :ill. ; 30 cm. Includes bibliographical references. University of Otago department: Tourism. "March 2005".

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  • Samurai Lear? : the cross-cultural intertexuality of Akira Kurosawa's Ran

    Gorringe, Karl (2007)

    Masters thesis
    University of Otago

    186 leaves ; 30 cm. Includes bibliographical references. University of Otago department: English. "Date: August 20, 2007."

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  • Copyright and its digital challenge : a comparison of New Zealand and German copyright law

    Gutman, Daniel (2006)

    Masters thesis
    University of Otago

    145, [17] leaves :ill. (some col.) ; 30 cm. Includes bibliographical references. University of Otago department: Law. "17 October 2006".

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  • John Grierson, the NZNFU and the art of propaganda

    Hoskins, David John (2007)

    Masters thesis
    University of Otago

    vii, 187 leaves ; 30 cm. Includes bibliographical references. "6 February 2007." University of Otago department: Media, Film and Communication.

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  • The medical, ethical and legal issues surrounding the management of persistent vegetative state patients

    Bloore, Samuel Geoffrey (2004)

    Masters thesis
    University of Otago

    iv, 72 leaves ; 30 cm Includes bibliographical references. "1st July 2004"

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  • Medication histories and the identification of adverse drug event-related hosptial admissions

    Cooke, Rachael Peart (2004)

    Masters thesis
    University of Otago

    ix, 190 leaves ; 30 cm. Includes bibliographical references.

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  • Educating girls for a healthier Cambodia: The impact of education on girls' health knowledge, attitudes, and practices

    Cousins, Kimberly C (2006)

    Masters thesis
    University of Otago

    Introduction In recent decades, studies from developing countries have shown that maternal education is strongly correlated with child health. Many government agencies and non-governmental organisations have used this evidence to emphasise the importance of educating girls and women as an effective means of improving population health in the long-term. The relationship between maternal education and child health, though evident in many studies, is still not clearly understood. The differences between educated women and non-educated women are also indicative of wider socio-economic, cultural, and environmental differences that suggest that educated and non-educated women may be more influenced by other factors besides whether or not they have been to school. Furthermore, the immediate impact of education on girls' health knowledge, attitudes, and behaviours, which may eventually affect both maternal and child health, has often been overlooked by researchers. An investigation of health knowledge and practices of young women may offer further insight into the mechanisms which determine their future children's health. As a developing country, Cambodia's leading causes of mortality and morbidity are from communicable diseases. Many of the country's inhabitants have limited access to adequate sanitation and water, health facilities, and schools. Although many humanitarian organisations and government and non-government agencies are working to improve the situation in Cambodia, little research has been conducted to determine effective strategies to improve the present and future health and well-being of young Cambodians. Purpose The purposes of this study were to evaluate the impact of schooling on young Cambodian women's health knowledge, attitudes, and practices, as well as to evaluate the health impact of a specific programme of the Cambodian Arts and Scholarship Foundation (CASF) that provides scholarships to young women. Methods Qualitative and quantitative data were collected using face-to-face interviews following a piloted, structured questionnaire. Three comparison groups were identified: CASF scholarship recipients, non-CASF students, and out-of-school participants. Eligible participants were selected by local informants and interviewed in Khmer or Bunong. Additional information was collected during focus groups with local villagers and interviews with village chiefs. Results Between April and August 2005, data were collected from 82 face-to-face interviews, nine village focus groups, and four interviews with village chiefs, in three Cambodian provinces and Phnom Penh. In-school and out-of-school participants lived in substantially different environments, primarily because in-school participants were more likely to live in rural areas (94.0%) than out-of-school participants (30.0%). Residence was an important determinant for access to hygiene and sanitation facilities, which would affect health practices and outcomes. Health practices improved among in-school participants, both CASF and non-CASF, although in CASF students, these improved practices were not reflected in health outcomes. Despite being in school, CASF students had similar health outcomes to out-of-school participants as regards self-reported health state and recent diarrhoeal disease incidence. Health knowledge of out-of-school participants was better than in-school participants, particularly for tuberculosis transmission and prevention methods. However, better health knowledge did not necessarily lead to improved health practices. Conclusion Although hand washing and other health practices were better and more consistent in the in-school groups, the poor health of CASF students suggests that education and improved health practices may not be sufficient in improving young people's health. Any benefits that may arise from educating girls may be overshadowed by an unhealthy physical environment, such as lack of toilets in communities and schools, inadequate access to safe water, and poor air quality. Socio-economic status also plays a huge role in the health status of young women, which, in the short term, at least is not mitigated by schooling.

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  • From Wonder Woman to Aeon Flux : women heroes, feminism and femininity in post-war New Zealand

    Cullen, Lynda (2007)

    Masters thesis
    University of Otago

    Description: v, 140 leaves ; 30 cm. Notes: "March 2007". University of Otago department: Anthropology. Thesis (M.A.)--University of Otago. Includes bibliographical references.

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  • City pigeons : Kererū (Hemiphaga novaeseelandiae) in the urban Dunedin environment : abundance, habitat selection and rehabilitation outcomes

    Daglish, Lisa (2005)

    Masters thesis
    University of Otago

    viii, 180 leaves :ill. (some col.) ; 30 cm. Includes bibliographical references. Typescript. University of Otago department: Zoology.

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  • An examination of some relationships between the New Zealand jurisprudence of shared, equal parental rights and responsibilities & the gendered hierarchy of care 1994-2002

    Evans, Marian J. (2004)

    Masters thesis
    University of Otago

    xiv, 258 leaves :ill. (some col.), maps ; 30 cm. Bibliography: leaves 184-207. University of Otago department: Law.

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  • Children's insights into family discipline

    Dobbs, Terry Anne (2005)

    Masters thesis
    University of Otago

    v, 155 leaves :ill. (some col.), maps ; 30 cm. Bibliography: leaves 126-127. University of Otago department: Children's Issues Centre. "January, 2005".

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  • A stochastic computer simulation of island group colonisation by Rattus norvegicus in small near shore island systems : specifically Tia island and the Boat group

    Coutts, Shaun Raymond (2005)

    Masters thesis
    University of Otago

    212 leaves :port ; 30 cm. [Bibliography] : l.201-2121. January 2005'. University of Otago department: Zoology

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  • The dilemmas of displacement : revitalisation and gentrification in inner city Wellington, New Zealand

    Crack, Charlotte Emily (2005)

    Masters thesis
    University of Otago

    viii, 132 leaves :col. ill., maps ; 30 cm. Includes bibliographical references. University of Otago department: Geography.

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  • The Protean grid : Milan Mrkusich, formalism and change

    Craig, Chrissie (2004)

    Masters thesis
    University of Otago

    viii, 103 leaves :charts, music ; 30 cm. Bibliography: leaves 88-89. University of Otago department: Art History and Theory. "December 2004."

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