The purpose of this test is to determine the effects of a substance on the growth of freshwater microalgae and/or cyanobacteria. Exponentially growing test organisms are exposed to the test substance in batch cultures over a period of normally 72 hours. The system response is the reduction of...

This publication offers a general introduction to sustainability impact assessment, which is an approach for exploring the combined economic, environmental and social impacts of a range of proposed policies, programmes, strategies and action plans. Such assessments can also assist...

This chart compares the EC Procurement Directives and the UNCITRAL Model Law on Procurement of Goods, Construction and Services. Most central and eastern European countries used the Model Law as the basis of their public procurement laws in the early 1990s. Now that many countries of the region...

Regulators and policy makers should boost competition among mobile telephone operators to cut the high prices being charged for international data roaming. Analysis of pricing plans at 68 operators in the 34 OECD countries points to a strong case for new consumer protection and empowerment measures.