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Percy Shelley: Polemicist
History & The Arts

Percy Shelley: Polemicist

...central concern of republicanism today. Likewise he warns clearly about the dangers of violent revolution in advancing the cause of egalitarianism: “…it must not be the partial warfare of physical strength, which would induce the very evils which the tendency of the following Essay is calculated to eradicate; but gradual, yet decided intellectual exertions must...
Life as a Railway Worker: An Oral History Testimony by Nan Zaimaitas nee Lamont
Society, Politics & Law

Life as a Railway Worker: An Oral History Testimony by Nan Zaimaitas nee Lamont

...Central and Paisley Canal station in the South West of Glasgow. I later moved to a new cleaning depot at Bridgeton, in the East End of the city. I never really thought about other roles within the railway as I needed the set working patterns to be able to arrange childcare for my family. In those days work would have been impossible without the support of family members,...
Planetary Protection of Mars
Science, Maths & Technology

Planetary Protection of Mars

...central principle is to minimise the amount of biological material (bioburden) carried by a spacecraft that might contaminate the martian surface. Setting standards It was required that the Viking landers that reached Mars in 1976 carried with them 300 terrestrial bacterial spores per m2 (spores are used as a proxy for all microbial contamination as they are highly...
Is blocking migrant benefits missing the point?
Society, Politics & Law

Is blocking migrant benefits missing the point?

...central European states do see it as discriminating against their citizens, but it is not unfeasible that Cameron will be able to get a deal. In fact, a timely focus group study revealed that Poles and Bulgarians themselves are not against welfare restrictions in the UK. But the main point is this: no one really cares. Europe’s migration crisis simply isn’t about...
Swept away: Brighton's Chain Pier collapses during a storm
History & The Arts

Swept away: Brighton's Chain Pier collapses during a storm

...central piers fell with a crash, and the head very shortly followed. In half an hour nothing was left but a portion of the first pier, the whole of the flooring and connecting chains having been swept away. The fabric of the pier vanished in a moment, and the huge timbers carried westward by the current did great damage along the whole of the front of Brighton. Such was...
Grinding
Science, Maths & Technology

Grinding

...central axis, making contact with the surface of the workpiece, while the particles act as cutting tools that cut chips from the material...[Images to demonstrate 'Grinding' - see article ] Manufacture: Selection of correct grinding wheel is essential to all processes and applications. Low stress grinding (LSG) uses wheel speeds of about 20 m s-1 and can usually be done...
Article 10 mins
Blow moulding
Science, Maths & Technology

Blow moulding

...centrally between two halves of a closed mould. Pressurised air is used to inflate the parisons, until they conform to the shape of the mould cavity...The process of blow moulding containers, showing the sequence of operations in the water-cooled mould. (a) [Diagram to demonstrate Blow moulding (see article) ] (b) inflating [Diagram to demonstrate Blow moulding (see...
Culture and the manufacturing industry, 1983
OpenLearn Ireland

Culture and the manufacturing industry, 1983

...central to the survival of Irish as a living language. Poverty and a lack of jobs led to decades of emigration which decimated the Irish speaking community. Agriculture, even modernised agriculture could not by itself stem the flow of emigration. To retain what was left of an Irish speaking culture, employment was needed, and that meant bringing in manufacturing industry....