title: Thermally resolved synchrotron FT-IR microscopy of structural changes in bloodmeal-based thermoplastics

authors: Bier, James Michael

subjects: secondary structure estimation

abstract: Synchrotron FT-IR micro-spectroscopy was used to determine thermally induced structural changes in thermoplastic protein produced from bloodmeal after mixing with sodium sulphite, sodium dodecyl sulphate, urea, tri-ethylene glycol and water. Changes in protein secondary structure at elevated temperature were assessed using second derivative peak height ratios in the amide III region (1,200–1,330 cm⁻¹) and compared with DSC and DMA results over the same temperature range. The results show an increase in ordered β-sheet structures with temperature at the expense of random coils, and that these β-sheets do not melt in the temperature range up to extrusion temperature of 120 °C. The implication of this is that during melt processing, β-sheet clusters may remain intact, similar to dispersed particulate fillers.

text: Thermally resolved synchrotron FT-IR microscopy of structural changes in bloodmeal-based thermoplastics Synchrotron FT-IR micro-spectroscopy was used to determine thermally induced structural changes in thermoplastic protein produced from bloodmeal after mixing with sodium sulphite, sodium dodecyl sulphate, urea, tri-ethylene glycol and water. Changes in protein secondary structure at elevated temperature were assessed using second derivative peak height ratios in the amide III region (1,200–1,330 cm⁻¹) and compared with DSC and DMA results over the same temperature range. The results show an increase in ordered β-sheet structures with temperature at the expense of random coils, and that these β-sheets do not melt in the temperature range up to extrusion temperature of 120 °C. The implication of this is that during melt processing, β-sheet clusters may remain intact, similar to dispersed particulate fillers.

year: 2013

title: Al-Andalus Rediscovered: Iberia's New Muslims [Book Review]

authors: Drury, Abdullah

abstract: This article reviews the book 'Al-Andalus Rediscovered: Iberia’s New Muslims', by Marvine Howe.

text: Al-Andalus Rediscovered: Iberia's New Muslims [Book Review] This article reviews the book 'Al-Andalus Rediscovered: Iberia’s New Muslims', by Marvine Howe.

year: 2013-07

title: Whitiwhiti Korero: Exploring the researchers' relationship in cross-cultural research

authors: Simpson, Mary Louisa

subjects: Aotearoa New Zealand

abstract: This paper explores the intercultural relationship between two New Zealanders and its influence in an unfolding cross-cultural research project involving kaumātua (Māori elders). Using a “critical incidents” approach, the authors undertake an exploration of the hyphen as the relationship in indigene-colonizer, bicultural collaboration. We show that for there to be political or structural development within cross-cultural research, personal commitment, and relationships are central to changing research and researcher practices.

text: Whitiwhiti Korero: Exploring the researchers' relationship in cross-cultural research This paper explores the intercultural relationship between two New Zealanders and its influence in an unfolding cross-cultural research project involving kaumātua (Māori elders). Using a “critical incidents” approach, the authors undertake an exploration of the hyphen as the relationship in indigene-colonizer, bicultural collaboration. We show that for there to be political or structural development within cross-cultural research, personal commitment, and relationships are central to changing research and researcher practices.

year: 2010