Bleda M.,Harold Hankins Building |
Bleda M.,University of Murcia |
Bleda M.,University of Manchester |
Shackley S.,Kings Buildings |
And 2 more authors.
JASSS | Year: 2012
This paper presents a computer based simulation model which analyses the dynamics of public perceptions of risk using Bovine Spongiform Encephalopathy (BSE) ('mad cow disease') in the UK as a case study. The model is based upon a theoretically-derived understanding of the concept of perception of risk, and employs Cultural Theory and the archetypes it identifies as distinctive forms of social organization and cultural bias in the formation of perceptions. Cultural Theory is used as a theoretical lens for understanding the different interpretations of the risk associated with BSE/nvCJD, the subsequent risk amplification by the media, and the effect of trust and reliance in science and government in their construction. The analysis helps achieve a better understanding of the dynamics of public perceptions of risk, and it is therefore of interest both for academics and policy makers. In particular, the model allows exploring the influence that the occurrence of risk-related events, their media coverage, and trust in government responses has in the process by which people construct their risk perceptions. ©Copyright JASSS.
Mignard D.,Kings Buildings |
Barik R.C.,Kings Buildings |
Barik R.C.,CSIR - Central Electrochemical Research Institute |
Bharadwaj A.S.,Kings Buildings |
And 5 more authors.
Journal of CO2 Utilization | Year: 2014
The conversion of wind, solar or marine energies to fuels and chemicals can exploit the chemical utilisation of carbon dioxide, and could lead to a more sustainable chemical industry. In particular, electrolytic conversion of CO 2 may suit the short-term variability of the energy supply while avoiding issues associated with the large scale storage of hydrogen. Lanthanum cuprate perovskites were described a while ago as promising electrocatalysts for the production of valuable higher alcohols, ethylene and methane from CO 2. However, confusion was apparent in the literature as to the nature of the compound that was used, and the data on applied potentials was scarce. In this paper, we report on the electroreduction of CO2 at a gas diffusion electrode loaded with a strontium-doped lanthanum cuprate perovskite in 0.5 M KOH. The compound was prepared following the procedure that was described in previous literature on CO2 electroreduction, and it was characterised as a mixture of bi-layered La1.8Sr 0.2CuO4 with tetragonal (La,Sr)CuO2.6. We also extended the range of temperatures (2-40 C) and pressures (1-43 barg). Methane and ethylene were major products of electroreduction, unlike in previous work where alcohols were dominant. Results and the operational experience from this work should help direct effort towards catalysts that have the advantages of copper metal without its limitations. © 2014 Elsevier Ltd.