Applying historical GIS beyond the academy: four use cases for the Great Britain HGIS
Total funding for the Great Britain Historical GIS now totals over $US 3.5m., but obtaining this funding required us to demonstrate that the results would benefit an audience beyond academic history. This chapter describes how we have worked with four other groups to meet their needs: health researchers, archivists, government environmental agencies and companies selling advice to the property sector. The main focus is on the reasons for the collaboration, with details of the actual research provided mainly via references. The case studies presented here are of course all drawn from the experience of one project, but that experience is quite diverse, and each case study ends with some more general lessons.
Life course influences on health in early old age
The study found evidence to support the theory that material and environmental disadvantage accumulates over the life course and is linked to social class. Disadvantage in childhood, in terms of illness and social position, is associated with higher levels of accumulated exposure to hazards in the living and working environments by early old age. Socioeconomic and health disadvantages after retirement from paid employment are associated with the level of disadvantage which has previously accumulated across life.
Hydrogen-rich gas production from biomass air and oxygen/steam gasification in a downdraft gasifier
Biomass gasification is an important method to obtain renewable hydrogen. However, this technology still stagnates in a laboratory scale because of its high-energy consumption. In order to get maximum hydrogen yield and decrease energy consumption, this study applies a self-heated downdraft gasifier as the reactor and uses char as the catalyst to study the characteristics of hydrogen production from biomass gasification. Air and oxygen/steam are utilized as the gasifying agents. The experimental results indicate that compared to biomass air gasification, biomass oxygen/steam gasification improves hydrogen yield depending on the volume of downdraft gasifier, and also nearly doubles the heating value of fuel gas. The maximum lower heating value of fuel gas reaches 11.11MJ/Nm3 for biomass oxygen/steam gasification. Over the ranges of operating conditions examined, the maximum hydrogen yield reaches 45.16gH2/kg biomass. For biomass oxygen/steam gasification, the content of H2 and CO reaches 63.27–72.56%, while the content of H2 and CO gets to 52.19–63.31% for biomass air gasification. The ratio of H2/CO for biomass oxygen/steam gasification reaches 0.70–0.90, which is lower than that of biomass air gasification, 1.06–1.27. The experimental and comparison results prove that biomass oxygen/steam gasification in a downdraft gasifier is an effective, relatively low energy consumption technology for hydrogen-rich gas production.