Noise control by sonic crystal barriers made of recycled materials

A systematic study of noise barriers based on sonic crystals made of cylinders that use recycled materials like absorbing component is here reported. The barriers consist of only three rows of perforated metal shells filled with rubber crumb. Measurements of reflectance and transmittance by these barriers are reported. Their attenuation properties result from a combination of sound absorption by the rubber crumb and reflection by the periodic distribution of scatterers. It is concluded that porous cylinders can be used as building blocks whose physical parameters can be optimized in order to design efficient barriers adapted to different noisy environments

Corporate Disclosures on Climate Change: An Empirical Analysis of FTSE All-Share British Fossil Fuel Producers

Although UK company law has become more sensitive to climate change problems, many open questions and issues remain about the practical utility of disclosure as a presumptive regulatory solution. This article presents and analyses unique empirical research to explore if and to what extent FTSE All-Share British fossil fuel producers are clearly and reliably: (a) integrating into their overall business risk management the ‘material’ risks that climate change presents to their operations; and (b) reporting the impact of their business activities on the climate and the likely consequences of any business decisions in the long term. The results show that current disclosure regulation apparently fails to secure behavioural change on the part of most companies in our sample. The article offers several explanations that provide a possible answer with validity as to why disclosure does not achieve its organising purpose of managing the risks and impacts of climate change

Boyle & Birds' Company Law [Tenth Edition]

No abstract available