title: Gender and sexuality III: Precarious places

authors: Johnston, Lynda

subjects: social sciences

abstract: This progress report considers precarious geographies of genders and sexualities at a range of intersecting scales. In a time currently characterised as precarious, anxious and insecure, feminist and queer geographers are well placed to examine vulnerable geographies - including their own - of bodies, lives and labours. The review considers the ways precarity operates as a concept, condition and experience by first, asking what and where is precarity? Second, a recurring theme throughout feminist and queer precarious geographical literature is the importance of foregrounding relationality, the multiscalar, and marginalised bodies. Ultimately, what it means to feel ‘secure’ shifts and changes across places, genders and sexualities.

text: Gender and sexuality III: Precarious places This progress report considers precarious geographies of genders and sexualities at a range of intersecting scales. In a time currently characterised as precarious, anxious and insecure, feminist and queer geographers are well placed to examine vulnerable geographies - including their own - of bodies, lives and labours. The review considers the ways precarity operates as a concept, condition and experience by first, asking what and where is precarity? Second, a recurring theme throughout feminist and queer precarious geographical literature is the importance of foregrounding relationality, the multiscalar, and marginalised bodies. Ultimately, what it means to feel ‘secure’ shifts and changes across places, genders and sexualities.

year: 2018

title: Influence of porosity on mechanical behaviour and gas permeability of Ti compacts prepared by slip casting

authors: Xu, Qian

subjects: porous materials

abstract: Porous titanium compacts with porosity in the range of 12.3–35.3 vol% were fabricated by slip casting. Slip casting is emerging to be an attractive process for fabrication of porous titanium products. The mechanical properties, fracture morphology, gas permeability, pore size analysis and pore shape factors for the porous Ti compacts were determined for different porosity levels. A decreasing porosity level resulted in less open porosity and gas permeability, reduced pore size, and an increased tensile stress and elongation. The mechanical properties of porous titanium compacts produced by slip casting were comparable with more conventional press and sintered materials at the same porosity levels. Theoretical models for tensile stress and ductility as a function of porosity were examined and incorporated into the results and differences between the theoretical models and experimental results are discussed. The pore shape factor analysis showed that tensile loading would stretch the pores in the compacts to produce more irregular pores, which were acting as linkage sites to allow the propagation of cracks. Additionally, a novel interconnected pore characterisation method using ammonium meta-tungstate solution is presented. By using backscatter scanning electron microscopy, the interconnected pores can be directly observed.

text: Influence of porosity on mechanical behaviour and gas permeability of Ti compacts prepared by slip casting Porous titanium compacts with porosity in the range of 12.3–35.3 vol% were fabricated by slip casting. Slip casting is emerging to be an attractive process for fabrication of porous titanium products. The mechanical properties, fracture morphology, gas permeability, pore size analysis and pore shape factors for the porous Ti compacts were determined for different porosity levels. A decreasing porosity level resulted in less open porosity and gas permeability, reduced pore size, and an increased tensile stress and elongation. The mechanical properties of porous titanium compacts produced by slip casting were comparable with more conventional press and sintered materials at the same porosity levels. Theoretical models for tensile stress and ductility as a function of porosity were examined and incorporated into the results and differences between the theoretical models and experimental results are discussed. The pore shape factor analysis showed that tensile loading would stretch the pores in the compacts to produce more irregular pores, which were acting as linkage sites to allow the propagation of cracks. Additionally, a novel interconnected pore characterisation method using ammonium meta-tungstate solution is presented. By using backscatter scanning electron microscopy, the interconnected pores can be directly observed.

year: 2013-12

title: Te Tarata

authors: Maxwell, Te Kahautu

abstract: This composition placed second in the Haka Composition Section. Te Tarata this composition commemorates the battle of Te Tarata in Te Whakatōhea 15 October 1865. This was the aftermath of the killing of the missionary Rev Carl Sylvius Volkner on the 2 March 1865. At the battle of Te Tarata it is recorded as the only calvary charge in the New Zealand Land Wars. Te Whakatōhea ingeniously wove around the palisade walls tī kouka (Cordyline australis) or cabbage tree. When the canon ball hit the palisades the tī kouka absorbed the force of the canon ball and rebounded the ball. 20 Te Whakatohea were killed and a number of others were wounded. This composition was performed by Ōpōtiki Mai Tawhiti at the Te Matatini World Championship Kapa Haka Competition 2015.

text: Te Tarata This composition placed second in the Haka Composition Section. Te Tarata this composition commemorates the battle of Te Tarata in Te Whakatōhea 15 October 1865. This was the aftermath of the killing of the missionary Rev Carl Sylvius Volkner on the 2 March 1865. At the battle of Te Tarata it is recorded as the only calvary charge in the New Zealand Land Wars. Te Whakatōhea ingeniously wove around the palisade walls tī kouka (Cordyline australis) or cabbage tree. When the canon ball hit the palisades the tī kouka absorbed the force of the canon ball and rebounded the ball. 20 Te Whakatohea were killed and a number of others were wounded. This composition was performed by Ōpōtiki Mai Tawhiti at the Te Matatini World Championship Kapa Haka Competition 2015.

year: 2014-10-10