title: Engineering the heterogeneous nuclei in Al-Si alloys for solidification control

authors: Bolzoni, Leandro

subjects: Aluminium alloys

abstract: Aluminium alloys are particularly advantageous for transportation industries to reduce the weight of the vehicles and thus pollution. The optimisation of the performances of Al alloys can be achieved by engineering and enhancing the heterogeneous nucleation of the melt. In this work, we demonstrate how the inoculation of commercial Al-Si alloys by Nb-based phases permits to improve and control the solidification process. We show that NbB2/Al3Nb are potent heterogeneous nucleation substrates for Al-Si alloys. The improved nucleation makes the material structure less dependent on the processing conditions such as solidification time and chemistry of the alloy (i.e. Si content). This permits to design and fabricate lighter structural components with improved and more isotropic performances.

text: Engineering the heterogeneous nuclei in Al-Si alloys for solidification control Aluminium alloys are particularly advantageous for transportation industries to reduce the weight of the vehicles and thus pollution. The optimisation of the performances of Al alloys can be achieved by engineering and enhancing the heterogeneous nucleation of the melt. In this work, we demonstrate how the inoculation of commercial Al-Si alloys by Nb-based phases permits to improve and control the solidification process. We show that NbB2/Al3Nb are potent heterogeneous nucleation substrates for Al-Si alloys. The improved nucleation makes the material structure less dependent on the processing conditions such as solidification time and chemistry of the alloy (i.e. Si content). This permits to design and fabricate lighter structural components with improved and more isotropic performances.

year: 2016-12

title: A review of urban climatology

authors: McBoyle, G.R.

abstract: The review attempts to elucidate the history of interest and the developing research work done in the field of urban climatology, with special emphasis on temperature. References are made to the works of certain researchers whose publications have not yet been translated into the English language. The reference list is by no means complete but contains most of the important works in this field.

text: A review of urban climatology The review attempts to elucidate the history of interest and the developing research work done in the field of urban climatology, with special emphasis on temperature. References are made to the works of certain researchers whose publications have not yet been translated into the English language. The reference list is by no means complete but contains most of the important works in this field.

year: 1968

title: Ko te Korokoro o te Parata: Ko tātou tonu

authors: Higgins, Rawinia

subjects: Whakaora reo

abstract: I roto i ngā kaupapa whakaora i te reo Māori kei te waipukehia tātou e te reo Pākehā. Ahakoa he aha te kaupapa kei te mate tonu te reo Māori, ā kāore anō tātou kia kite kei hea te ara tika hei karo atu i te korokoro o te parata. Kāore hoki tātou e titiro me pēhea e whakarekareka ai te reo ki te huhua o ngā Māori, tuatahi; tuarua ki te motu whānui. Ko te āhua nei ko tātou tonu kei te patu i tō tātou reo. He tere nō tātou ki te whakahāwea i ngā tūmomo kaupapa whakaora reo Māori. Kei ngā ngutu noa iho te mate nui ki te reo Māori. Ka ara mai he kaupapa whakaora reo, arā kē te tokomaha o ngā tāngata e patu ana i taua kaupapa. Ahakoa ko wai, kāore tētahi kaupapa e noho tapu ana. Katoa kei te tātāhia e tātou tonu. Nō reira, me aha? Me tuku kia mate? Me pēhea te patu i te korokoro o te parata mehemea ko tātou tonu taua taniwha?

text: Ko te Korokoro o te Parata: Ko tātou tonu I roto i ngā kaupapa whakaora i te reo Māori kei te waipukehia tātou e te reo Pākehā. Ahakoa he aha te kaupapa kei te mate tonu te reo Māori, ā kāore anō tātou kia kite kei hea te ara tika hei karo atu i te korokoro o te parata. Kāore hoki tātou e titiro me pēhea e whakarekareka ai te reo ki te huhua o ngā Māori, tuatahi; tuarua ki te motu whānui. Ko te āhua nei ko tātou tonu kei te patu i tō tātou reo. He tere nō tātou ki te whakahāwea i ngā tūmomo kaupapa whakaora reo Māori. Kei ngā ngutu noa iho te mate nui ki te reo Māori. Ka ara mai he kaupapa whakaora reo, arā kē te tokomaha o ngā tāngata e patu ana i taua kaupapa. Ahakoa ko wai, kāore tētahi kaupapa e noho tapu ana. Katoa kei te tātāhia e tātou tonu. Nō reira, me aha? Me tuku kia mate? Me pēhea te patu i te korokoro o te parata mehemea ko tātou tonu taua taniwha?

year: 2011-04