Discrete, sample introduction devices in analytical optical-emission spectroscopy

Imperial Users onl

Walk Through Solar System Times: An Exhibit with an Astrobiology Emphasis

In this astrobiology outreach project, we attempt to present the research of the Goddard Center for Astrobiology (GCA) in the context of the history of the Solar System. GCA research emphasizes the origin and formation of complex pre-biotic organic materials in extraterrestrial environments and explores whether the delivery of these primordial materials and water to the early Earth enabled the emergence and evolution of life. The content expounds on areas that are usually not touched upon in a timeline of the Earth's formation. The exhibit addresses the questions: How did our solar system form? How is the formation of our solar systems similar or different from others? How did the organic molecules we observe in space get to the Earth? What conditions are most suitable for life? We will address the issues and challenges of designing the exhibit and of explaining advanced astrobiology research topics to the public

Creating a developmental spinal stenosis rat model and utility of somatosensory evoked potential for testing

published_or_final_versio

Will a rise in consumption tax share increase the effectiveness of government spending?

The Australian tax reform in July 2000 gave heavier weights to consumption tax in the tax mix at the expense of the income tax. This paper shows that the trade off among the tax-mix policy parameters depends on the structure of the economy. Given that the reform is tax-revenue neutral and no change in monetary stance, a rise in the share of consumption tax in the tax mix may increase the effectiveness of government spending in stabilising the economy if certain contain is fulfilled. A numerical example is included for illustration purpose