Scholarship as cultural production in the neoliberal university: Working within and against ‘deliverables’

This article focuses on the idea of scholarly work as cultural production to help understand how the tensions of precarious, early-career academic employment are articulated on a day-to-day basis in the context of pressures to efficiently produce monetizable ‘deliverables.’ Using a political economy of communication framework and an iterative methodological approach, the authors mobilize examples drawn from a collaborative set of activities they undertook as part of a broader research group of emerging Canadian scholars working in different international contexts between 2012 and 2015. The research conversation began in academic roundtables in 2013, and was furthered through a content analysis of articles collected from scholarly and general interest blog posts, newsletters, and magazines published online from July 2012 to April 2014. In this article, the authors explore emerging themes and document pressures to conform to neoliberal practices within the corporatized university, as well as suggest pathways for dissent and reinvention of academic labour

Reaction Mechanisms in Irradiated, Precipitated, and Mesoporous Silica

A matrix EPR spectroscopy study of the low temperature γ radiolysis of precipitated (Zeosil) and mesoporous high surface silica has afforded evidence of the formation of trapped H-atoms, H-atom centers, siloxy radicals Si–O^•, anomalous silyl peroxy radicals Si-OO^• with reduced <i>g</i> tensor anisotropy, siloxy radical-cations (Si–O–Si)^+•, E′ centers, and two species from Ge impurity. Coordination of peroxyl radicals with diamagnetic Si⁺ centers is proposed and tested by DFT computations in order to justify the observed <i>g</i> tensor. Coordination of H-atoms to Si⁺ centers is also proposed for the structure of the H-atom centers as an alternative model not requiring the intervention of Ge, Sn, or CO impurities. The DFT method has been employed to assess the electronic structure of siloxy radical-cations and its similarity with that of the carbon radical-cation analogues; the results have prompted a revision of the structures proposed in the literature for ST1 and ST2 centers. The comparison between the two types of silica has afforded evidence of different radiolysis mechanisms leading to a greater yield of trapped H-atoms and H-atom centers in zeosil silica, which is reckoned with the 4-fold greater concentration of silanol groups. Parallel radiolysis experiments carried out by using both types of silica with polybutadiene oligomers as adsorbate have afforded evidence of free valence and energy migration phenomena leading to irreversible linking of polybutadiene chains onto silica. Reaction mechanisms are proposed based on the detection of SiO₂-bonded free radicals whose structure has been defined by EPR