52,618 research outputs found
WhÄriki : beyond simple : an exhibition report presented as partial fulfilment of the requirements for the degree of Masters of MÄori Visual Arts, Massey University, Palmerston North, New Zealand
This thesis/exhibition report is an explication of the significance and relationship of Kai
rÄranga, rÄranga whÄriki and their relationship with whÄnau, hapÅ« and iwi. It explores the
impetus behind and relationships important in, and to the production of whÄriki.
Through the exploration of these relationships the necessity for whÄriki wÄnanga throughout
Aotearoa and having wÄnanga as the preferred medium of imparting knowledge pertaining to
rÄranga whÄriki and for continuity in the production of whÄriki is emphasised.
It touches on the MÄori convention of tono that facilitates interaction between the Kai rÄrangaresearcher
and the Kai tono-researched negating the sometimes invasive convention of ethics
approval and formalised contractual obligations.
It follows the pathway of author and Kai rÄranga, Te Hemo Ata Henareās, coming to be of her
mahi whÄriki practice. It is an intimate account that extends from function and technique to
foundational connectivity to the wider roopu whÄriki and those who have preceded us with
templates of excellence that recognise the importance of the whakapapa of MÄori whakaaro,
our epochs and eons of transcendent time and the interconnectedness of all things in and
through these patterned processes (Jackson, 2013; Marsden, 2003; Tamanui, 2013). As
Karani Sonny PÄpuni said;
āā¦you take this whÄriki home with you and then a piece of us will always be
with your whÄnauā (Mate ki TÄtahi [Sonny] PÄpuni, personal communication,
May 17 1991).
A clear objective emerging out of this research exercise was to produce a body of work in the
form of an exhibition of whÄriki and to produce a pictorial and written explication of the process
and praxis of whÄriki wÄnanga. However, through the research process, I was returned; i hoki
atu ki te timatatanga Å oku mahi, so I could come to know and be.
The theme that emerges through rÄranga whÄriki is the inseparability and the multiplicity of
whakapapa and/or whanaungatanga that the Kai rÄranga embodies essential for the
continuation of the praxis of rÄranga whÄriki that can only be described as extraordinarily
āBeyond Simpleā
The dynamics of magnetic ordering in a natural hemo-ilmenite solid solution
We investigated the micromagnetic properties of hemo-ilmenite particles in an alluvial soil. All magnetic accessory minerals except the weathering resistant hemo-ilmenite grains were removed from the soil matrix by chemical treatment with concentrated acid followed by magnetic separation. X-ray diffraction revealed hemo-ilmenite grains with single crystal properties and an ilmenite mole fraction of y = 0.86. Magnetization versus applied magnetic field plots in a temperature range between 6 and 300 K were recorded in order to study the hysteresis and the exchange properties. In addition, field and frequency-dependent AC susceptibility measurements were performed with and without a DC bias field in order to analyse the dynamic magnetization of the sample down to 3 K. The hemo-ilmenite particles are considered as a mixed system with nano-sized cation-ordered areas (COA) and cation-disordered areas (CDA), which differ in their local Fe(III) concentration. Ferrimagnetic single-domain order in the Fe(III)-enriched CDA started at about 220 K. Upon cooling gradual transdomain transformation generates multidomain order. A maximum in the blocking distribution was reached at 44 K, followed by the onset of spin-glass dynamics. At lower temperature, blocking of superparamagnetic clusters in the COA created antiferromagnetic (AFM) ordering, which became more prominent with decreasing temperature. The interaction between the spin-glass like CDA and the AFM areas was documented by the onset of exchange bias at T < 20 K. The occurrence of exchange bias as well as spin-glass dynamics in the hemo-ilmenite grains is probably an effect of the inhomogeneity of the local Fe(III) concentration. This effect leaves a magnetically competitive regime with areas showing ilmenite-like magnetic properties, and Fe(III) rich disordered areas with magnetic long-range ordering up to 220 K and frustration near the ordering temperature of ilmenit
Hemolymphangioma of the lower extremities in children: two case reports
Abstract Background and purpose Hemo-lymphangiomas are rare benign tumors that arise from congenital malformation of the vascular system. They are usually diagnosed at birth or early in childhood. The management of hemo-lymphangiomas in children remains challenging because complete resection is often difficult to be achieved and recurrences are common. Methods We present the case of two children with a mass on their left tibia. Imaging modalities, plain radiograph, Ultrasonography and Magnetic Resonance were used to investigate the nature of the mass, the anatomical relationship to the neighboring tissues and help planning the surgical resection. The dominant diagnosis was hemo-lymphangioma. Both lesions increased in size in a short period of follow-up thus we decided to proceed to surgical excision. The diagnosis of hemo-lymphangioma was confirmed by histological examination of the surgical specimen. Post-operatively, seroma was formed to the first patient, managed by placing a drainage and immobilizing the limb on a splint. The second patient experienced no complications post-operatively. After 12 months of follow-up both patients had no complications or recurrence. Conclusions Very few cases of hemo-lymphangiomas of the extremities have been reported in the literature. Those tumors can grow slowly and remain asymptomatic for a long period of time or may become aggressive and enlarge rapidly, without invasive ability though. Radical resection is the choice of treatment offering the lowest recurrence rates. Other therapeutic methods are: aspiration and drainage, cryotherapy, injection of sclerotic agents and radiotherapy; although none of those offers better results that the surgical excision.</p
Acute reperfusion intramyocardial hemorrhage leads to regional chronic iron deposition in the heart
Intramyocardial hemorrhage commonly occurs in large reperfused myocardial infarctions. However, its long-term fate remains unexplored. We hypothesized that acute reperfusion intramyocardial hemorrhage leads to chronic iron deposition
Fe-Ti-O exchange at high temperature and thermal hysteresis
In this study, the Fe-Ti-O exchange behaviour between the systems hemo-ilmenite (y)FeTiO3-(1 āy)Fe2O3 and titano-magnetite (x)Fe2TiO4-(1 āx)Fe3O4 was investigated in the temperature range from 900 to 1400 K in an inert Ar atmosphere. Starting from a mixture of hematite and ilmenite with a fixed mol per cent, heat treatment generates a self-adjusting chemical equilibrium between hemo-ilmenite and titano-magnetite solid solution by means of interdiffusion and Fe3+ā Fe2+ reduction. Structural and magnetic characterization reveals that hemo-ilmenite is stable at all temperatures, whereas titano-magnetite shows increasing Ti-content with increasing treatment temperature. Heating-cooling cycles were performed for a sample to mimic slow cooling and study its effects on the two solid solutions. The magnetic properties of that sample exhibit thermal hysteresis during these cycles, as the Ti departs from titano-magnetite and thus leads to a new chemical equilibrium. The experimental data provide insight into the dynamics of the formation of Fe-Ti-O phases formed under varying conditions in geological system
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