title: Feature Review of Matthew Bannister (1999) Positively George Street: A personal history of Sneaky Feelings and the Dunedin Sound, Auckland: Reed

authors: McCleay, Colin

subjects: Sneaky Feeling

abstract: Feature review of the book: Matthew Bannister (1999) Positively George Street: A personal history of Sneaky Feelings and the Dunedin Sound, Auckland: Reed.

text: Feature Review of Matthew Bannister (1999) Positively George Street: A personal history of Sneaky Feelings and the Dunedin Sound, Auckland: Reed Feature review of the book: Matthew Bannister (1999) Positively George Street: A personal history of Sneaky Feelings and the Dunedin Sound, Auckland: Reed.

year: 2001

title: The effect of silane coupling agents on radiata pine fibre for use in thermoplastic matrix composites

authors: Pickering, Kim L.

subjects: A Thermoplastic resin

abstract: Gamma aminopropyltriethoxysilane (GS) and dichlorodiethylsilane (DCS) were employed for surface modification of radiata pine (Pinus radiata) wood fibre. Levels of fibre moisture were carefully controlled to optimise chemical and hydrogen bonding with these silane coupling agents. The effect of pre-treatment using 2% sodium hydroxide, shown to be effective in assisting silane coupling for other natural fibres [1], was also investigated. X-ray Photoelectron Spectroscopy (XPS) and Nuclear Magnetic Resonance (NMR) were used to characterise modification of the wood fibre. Concentrations of up to 3.2wt% Si were obtained on the fibre surface due to silane coupling, however, pre-treatment was found to dramatically reduce this value. NMR provided evidence that coupling had occurred between the fibre and DCS by a reaction producing ether linkages between the hydroxyl groups on the wood fibre and silane. Pre-treatment and treatment were found to have an insignificant effect on fibre strength. Composite sheets were produced by blending fibre (5, 10 and 20wt%) with polyethylene followed by extrusion. An increase in strength was obtained at fibre contents of 5wt% for all treatments compared to composites with untreated fibre. This is believed to be mainly due to increased compatibility of the fibre surface to polyethylene. However, there was no such improvement obtained at higher fibre contents. Evidence suggests that the production of voids is limiting composite strength.

text: The effect of silane coupling agents on radiata pine fibre for use in thermoplastic matrix composites Gamma aminopropyltriethoxysilane (GS) and dichlorodiethylsilane (DCS) were employed for surface modification of radiata pine (Pinus radiata) wood fibre. Levels of fibre moisture were carefully controlled to optimise chemical and hydrogen bonding with these silane coupling agents. The effect of pre-treatment using 2% sodium hydroxide, shown to be effective in assisting silane coupling for other natural fibres [1], was also investigated. X-ray Photoelectron Spectroscopy (XPS) and Nuclear Magnetic Resonance (NMR) were used to characterise modification of the wood fibre. Concentrations of up to 3.2wt% Si were obtained on the fibre surface due to silane coupling, however, pre-treatment was found to dramatically reduce this value. NMR provided evidence that coupling had occurred between the fibre and DCS by a reaction producing ether linkages between the hydroxyl groups on the wood fibre and silane. Pre-treatment and treatment were found to have an insignificant effect on fibre strength. Composite sheets were produced by blending fibre (5, 10 and 20wt%) with polyethylene followed by extrusion. An increase in strength was obtained at fibre contents of 5wt% for all treatments compared to composites with untreated fibre. This is believed to be mainly due to increased compatibility of the fibre surface to polyethylene. However, there was no such improvement obtained at higher fibre contents. Evidence suggests that the production of voids is limiting composite strength.

year: 2003

title: The legacy of Ngatoroirangi: Maori customary use of geothermal resources

authors: Stokes, Evelyn

subjects: geothermal resources

abstract: Geothermal activity has always been regarded as a significant traditional resource among Maori communities of the Bay of Plenty, Rotorua and Taupo districts. The principal settlements of the tribes of Te Arawa, Ngati Tahu and Ngati Tuwharetoa were associated with geothermal areas. Outside the Taupo Volcanic Zone there were numerous other hot springs which were also highly valued by Maori. Areas of surface geothermal activity all have some traditions, cultural and historical associations for local tribes. Geothermal resources were used in various ways.

text: The legacy of Ngatoroirangi: Maori customary use of geothermal resources Geothermal activity has always been regarded as a significant traditional resource among Maori communities of the Bay of Plenty, Rotorua and Taupo districts. The principal settlements of the tribes of Te Arawa, Ngati Tahu and Ngati Tuwharetoa were associated with geothermal areas. Outside the Taupo Volcanic Zone there were numerous other hot springs which were also highly valued by Maori. Areas of surface geothermal activity all have some traditions, cultural and historical associations for local tribes. Geothermal resources were used in various ways.

year: 2000