title: A computational study of the oxidation of SO₂ to SO₃ by gas-phase organic oxidants

authors: Kurten, Theo

subjects: chemistry

abstract: We have studied the oxidation of SO₂ to SO₃ by four peroxyradicals and two carbonyl oxides (Criegee intermediates) using both density functional theory, B3LYP, and explicitly correlated coupled cluster theory, CCSD(T)-F12. All the studied peroxyradicals react very slowly with SO₂  due to energy barriers (activation energies) of around 10 kcal/mol or more. We find that water molecules are not able to catalyze these reactions. The reaction of stabilized Criegee intermediates with SO₂  is predicted to be fast, as the transition states for these oxidation reactions are below the free reactants in energy. The atmospheric relevance of these reactions depends on the lifetimes of the Criegee intermediates, which, at present, is highly uncertain.

text: A computational study of the oxidation of SO₂ to SO₃ by gas-phase organic oxidants We have studied the oxidation of SO₂ to SO₃ by four peroxyradicals and two carbonyl oxides (Criegee intermediates) using both density functional theory, B3LYP, and explicitly correlated coupled cluster theory, CCSD(T)-F12. All the studied peroxyradicals react very slowly with SO₂  due to energy barriers (activation energies) of around 10 kcal/mol or more. We find that water molecules are not able to catalyze these reactions. The reaction of stabilized Criegee intermediates with SO₂  is predicted to be fast, as the transition states for these oxidation reactions are below the free reactants in energy. The atmospheric relevance of these reactions depends on the lifetimes of the Criegee intermediates, which, at present, is highly uncertain.

year: 2011

title: Of building blocks, library shelves, and a country’s soul

authors: Long, M

subjects: Literature

abstract: Critique of Tingting Bilong Mi essays: 
In the winning essay of the Tingting Bilong Mi 2020 essay competition, Illeana Dom brings her readers into her old school library.

text: Of building blocks, library shelves, and a country’s soul Critique of Tingting Bilong Mi essays: 
In the winning essay of the Tingting Bilong Mi 2020 essay competition, Illeana Dom brings her readers into her old school library.

year: 2020

title: The Kermadec Ocean Sanctuary: Terraqueous Territorialization and Māori Marine Environments

authors: McCormack, Fiona

abstract: This paper interprets the disrupted establishment of the Kermadec Ocean Sanctuary, a 620,000 square kilometre marine protection area, as a crucial moment in Pacific frontier making. The development of large-scale protected marine areas is a politically charged frontier tool, in which states garner international recognition and environmental renown by setting aside large swathes of their exclusive economic zones. In the Kermadec Sanctuary, this enclosure hit against an assemblage of Indigenous histories, ecologies, repatriated fishing rights, and privatized fishing quota challenging the oftmarginalized agency of Indigenous people in frontier narratives. This paper argues that three factors are fundamental to untangling this conflict: first, the historical trajectory of terraqueous territorialization in the Kermadec region, second, the post-Treaty of Waitangi settlement dynamics of Maori marine environments, and third, the common ecosystem services model underlying conservation and extraction.

text: The Kermadec Ocean Sanctuary: Terraqueous Territorialization and Māori Marine Environments This paper interprets the disrupted establishment of the Kermadec Ocean Sanctuary, a 620,000 square kilometre marine protection area, as a crucial moment in Pacific frontier making. The development of large-scale protected marine areas is a politically charged frontier tool, in which states garner international recognition and environmental renown by setting aside large swathes of their exclusive economic zones. In the Kermadec Sanctuary, this enclosure hit against an assemblage of Indigenous histories, ecologies, repatriated fishing rights, and privatized fishing quota challenging the oftmarginalized agency of Indigenous people in frontier narratives. This paper argues that three factors are fundamental to untangling this conflict: first, the historical trajectory of terraqueous territorialization in the Kermadec region, second, the post-Treaty of Waitangi settlement dynamics of Maori marine environments, and third, the common ecosystem services model underlying conservation and extraction.

year: 2021