Abstract: An interferometric distributed optical fiber sensing system with a sensing range over 300 km is proposed. This system employs Raman fiber amplifier with bidirectional pumping in conjunction ...

To help students excel, this article provides 30 most important short and long answer questions covering key topics from History, Geography, Political Science, and Economics. These questions are ...

Find out how we’re improving the quality of life for people with long term conditions and their carers. Our Declaration sets out the importance of person centred care for people with long term ...