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Protecting Landscapes and Creating the Right Tools for the Job
Society, Politics & Law

Protecting Landscapes and Creating the Right Tools for the Job

...Systems (GIS) to create a map divided into differently shaded areas that indicate the number of such features within them. However as well as quantifying the landscape in this way, the section also attempts to document its ‘special and evocative qualities’. Similarly, the ‘landscape areas’ section of the toolkit seeks to quantify land use and structural...
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Politics, knowledge and social change during the COVID-19 pandemic
Society, Politics & Law

Politics, knowledge and social change during the COVID-19 pandemic

...system-wide changes. This question of scaling-up is crucial. While ‘capacity’ is a slippery thing to nail down, one core facet is education and knowledge exchange. It is here that open and distance learning has a powerful role to play. The UN’s high-level forum on monitoring the implementation of the Sustainable Development Goals recently spoke of e-learning as a...
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Article 10 mins
Oil majors told to adapt or die
Nature & Environment

Oil majors told to adapt or die

...system. The IOCs also find themselves burdened with “stranded assets” – fossil fuel deposits that cannot be exploited if international agreements on limiting greenhouse gas emissions are going to be fulfilled. The demise of the oil majors has been predicted before, yet the companies live on. Despite recent setbacks, they are still financially powerful, with...
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Article 10 mins
15 facts about number 15
Education & Development

15 facts about number 15

...system. 7: A fifteenth wedding anniversary is called a crystal anniversary [A clear crystal] But is a crystal a rock? Crystals, rocks and minerals are three different materials. You can find out more in our Geology Toolkit, which includes a geology timeline, rock analyser, rock cycle, landscape features and safety tips. 8: Fifteen to One had a reputation for being one of...
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Article 10 mins
Centreless grinding
Science, Maths & Technology

Centreless grinding

...systems and applications Through feed​ [Images to demonstrate 'Centreless grinding' - see article ] Infeed End feed Manufacture: Centreless grinding is used primarily for volume production and finishing, particularly for work which cannot be held between centres. There are several types of centreless grinding, all of which consist of three basic elements: Grinding...
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Article 10 mins
Full mould casting (evaporative pattern)
Science, Maths & Technology

Full mould casting (evaporative pattern)

...system and the metal. Yields are slightly higher (50–80%) than the conventional methods, since risers are seldom needed. Typical products include automotive castings such as camshafts, crankshafts, ball-valve casings and caterpillar tracks. Materials: All castable materials with casting temperatures above that required to vaporise the polystyrene (≃700° C). The...
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Article 5 mins
Sand casting
Science, Maths & Technology

Sand casting

...system moulded in the top and bottom halves of the mould. Cores are used to form holes in the castings. They are placed in the split moulds after pattern removal. Usually, cores are made by dry sand moulding techniques. Core sand is mixed with oil, organic bonding material and water. They are moulded in core boxes, then removed and baked at 170–230 ˚C. A newer method...
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Article 5 mins
Teaching reading: what are our long term goals?
Education & Development

Teaching reading: what are our long term goals?

...systems, these surveys arguably serve to constrain what counts as reading in school and are likely to limit longer-term goals. To foster readers for life, a better balance needs to be struck between teaching reading skills and encouraging reading for pleasure – volitional reading which reflects the agency of the reader. As Cremin et al., (2014) have shown readers...
View article Teaching reading: what are our long term goals?
Article 10 mins