Well-defined, magnetic shell cross-linked knedel-like nanoparticles (MSCKs) with hydrodynamic diameters ca. 70 nm were constructed through the co-assembly of amphiphilic block copolymers of PAA20-b-PS280 and oleic acid-stabilized magnetic iron oxide nanoparticles using tetrahydrofuran, N,N-dimethylformamide, and water, ultimately transitioning to a fully aqueous system. These hybrid nanomaterials were designed for application as sequestering agents for hydrocarbons present in crude oil, based upon their combination of amphiphilic organic domains, for aqueous solution dispersibility and capture of hydrophobic guest molecules, with inorganic core particles for magnetic responsivity. The employment of these MSCKs in a contaminated aqueous environment resulted in the successful removal of the hydrophobic contaminants at a ratio of 10 mg of oil per 1 mg of MSCK. Once loaded, the crude oil-sorbed nanoparticles were easily isolated via the introduction of an external magnetic field. The recovery and reusability of these MSCKs were also investigated. These results suggest that deployment of hybrid nanocomposites, such as these, could aid in environmental remediation efforts, including at oil spill sites, in particular, following the bulk recovery phase.
COVID-19 has, and continues to, wreak havoc worldwide, and the healthcare system has been particularly challenged with personnel shortages, resource insecurity, mixed messages, and fear to name a few. At the outset, it was thought the pandemic would be short-lived, resulting in the enactment of disaster plans in hospitals. Such autocratic approaches are not always effective in the long-term; a servant leadership approach is more conducive to engaging teams, and this dyad structure supports effective leadership during challenging times. While there is not one right approach to leading through a pandemic, lessons learned from this pandemic are applicable when, not if, the next pandemic occurs.
In recent years behavioural science has quickly become embedded in national level policy making. As the contributions of behavioural science to the UK’s Covid-19 response policies in early 2020 became apparent, a debate emerged in the British media about its involvement. This served as a unique opportunity to capture public discourse and representation of behavioural science in fast-track, high-stake national policy making. Aimed at identifying elements which foster and detract from trust and credibility in emergent scientific contributions to policy making, in study 1 we use corpus linguistics and thematic analysis to map the narrative around the key behavioural science actors and concepts which were discussed in the 650 news articles extracted from the 15 most read British newspapers over the 12-week period surrounding the first hard UK lockdown from March 2020. We report and discuss 1) the salience of key concepts and actors as the debate unfolded, 2) quantified changes in the polarity of the sentiment expressed toward them and their policy application contexts, and 3) patterns of co-occurrence via network analysis. In Study 2, we investigate how salience and sentiment of key themes observed in traditional media discourse tracked on original Twitter chatter (N = 2,187). In Study 3, we complement these findings with a qualitative analysis of the subset of news articles which contained the most extreme sentiments (N = 111), providing an in-depth perspective of sentiments and discourse developed around keywords, as either promoting or undermining their credibility in, and trust toward behaviourally informed policy. We discuss our findings in light of the integration of behavioural science in national policy making under emergency constraints.
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