410 search results

Humans better at rapid change than we think
Nature & Environment

Humans better at rapid change than we think

...carbon transition today to public relief and federal works programmes. “The New Deal saw a general drop in income inequality, an improvement in gender equality, a major programme of new public housing and significant environmental works.” “THERE ARE COUNTLESS HALF-BURIED OR FORGOTTEN EXAMPLES THAT TELL US THAT BOLD ACTION IN TIMES OF UNCERTAINTY IS NOT ONLY POSSIBLE...
Apollo 11’s ‘one small step’ sparked a new rush to reach the Moon
Science, Maths & Technology

Apollo 11’s ‘one small step’ sparked a new rush to reach the Moon

...carbon, nitrogen, oxygen – in Moon rocks. Our findings suggest the presence of a water reservoir in the Moon which is similar to certain parts inside the Earth’s structure. Furthermore, the distinctive chemical composition of the water in the lunar samples points towards water in the Moon having a common origin with that of the Earth and asteroids. As we look forward...
Electrical Discharge Machining (EDM) and Grinding (EDG)
Science, Maths & Technology

Electrical Discharge Machining (EDM) and Grinding (EDG)

...carbon pick-up may occur in steel workpieces, leading to a hard martensitic layer. Design: Used extensively for tool and die work, and particularly suitable for irregular slots and cavities and small holes with high aspect ratios. Leaves no burrs. Holes down to 0.05 mm can be formed, but an allowance has to be made of 0.005–0.50 mm side-1 for “overcut”. Holes are...
Reaction injection moulding (RIM) and Reinforced reaction injection moulding (RRIM)
Science, Maths & Technology

Reaction injection moulding (RIM) and Reinforced reaction injection moulding (RRIM)

...carbon, and polypropylene are currently under investigation. Material properties of RRIM systems: Property Urethane, high modulus Nylon 6 Epoxy Glass content (%) 23* 25* 45 - 52† Tensile strength (MPa) 45 52 193 - 303 Elongation (%) 14 13 – Flexural modulus at 24˚C (MPa) 2620 1896 17,927 - 25,511 Coefficient of linear thermal expansion (parallel to fibres) (× 10-6...
Hot forging (closed die)
Science, Maths & Technology

Hot forging (closed die)

...Carbon and alloy steels 760 - 1200 Stainless steels 930 - 1180 Nickel alloys 750 - 1125 Titanium alloys 825 - 900 Niobium alloys 1050 - 1250 Molybdenum alloys 1050 - 1350 Tungsten and its alloys 1200 - 1500 Large quantities of low-alloy steels of the Ni-Cr and Ni-Cr-Mo types are used for highly stressed parts such as axle shafts and other automobile parts. Wrought...
Ceres: Is it an asteroid? Is it a comet? Erm...
Science, Maths & Technology

Ceres: Is it an asteroid? Is it a comet? Erm...

...carbonate. The clay minerals could have been produced by silicates reacting with ammonia ice. However, if Ceres had formed where it is now, it would not have been able to pick up any ammonia ice to enable such a reaction, because the ice would not be stable. This means that Ceres may have originally formed in the Kuiper Belt on the outskirts of the solar system and then...
Too much of a good thing? Choice challenges in sustainable clothes shopping
Money & Business

Too much of a good thing? Choice challenges in sustainable clothes shopping

...carbon; recycled), but there is little guidance to help shoppers navigate a ‘best’ purchase choice. There is not a single, international, all encompassing ‘omni-label’ that covers everything, so – is it better to choose recycled materials or support fair wages when buying that T-shirt? H&M offer organic leather, hemp, silk, cotton and linen but also garments...
Speed of Arctic changes defies scientists
Nature & Environment

Speed of Arctic changes defies scientists

...carbon dioxide and methane. The WMO secretary-general, Petteri Taalas, said the Arctic changes had also been a factor in unusual winter weather patterns in North America and Europe. He said the thawing of the permafrost could release vast quantities of greenhouse gases into the atmosphere. “These are part of the vicious circles of climate change which are the subject of...