419 search results
Multipoint cutting (rotational)
Science, Maths & Technology

Multipoint cutting (rotational)

...carbon steel. Carbide tips are brazed or clamped into position, and are used for harder materials and/or higher production rates. They are more expensive to buy, and require a more rigid, powerful and faster machine, but have a longer life and 3–10 times the cutting speed of high speed steel. Materials Drilling Almost any material can be drilled, the only limitation...
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Article 10 mins
Chemical vapour deposition (CVD)
Science, Maths & Technology

Chemical vapour deposition (CVD)

...carbon and nitrogen (instead of CH4 and N2), and the lower temperatures reduce the risk of edge brittleness in cemented carbide tips. PACVD uses an argon plasma to heat the substrate material, thus lowering the temperature of the process to 400–500˚C. In diffusion CVD the coating, substrate and temperature are chosen so the coating reacts with the substrate to produce...
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Article 10 mins
Flame cutting
Science, Maths & Technology

Flame cutting

...carbon and low alloy steels. Most non-ferrous metals cannot be flame cut, although titanium, which does not fulfil the above requirements, can be successfully flame cut. Despite precautions, carburisation and hardening usually occur in the thin solidified “re-cast” layer. High alloy steels, cast irons and non-ferrous metals cannot usually be cut by conventional flame...
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Article 5 mins
Breaking bad: The science of flatulence
Health, Sports & Psychology

Breaking bad: The science of flatulence

...carbonated beverages), prebiotics, and/or being afflicted with gastrointestinal diseases such as IBS, GERD, or a Giardia infection. While many drugs enhance one's farting ability, there are also drugs capable of cracking down on crop dusting. Let's look at both groups. What drugs cause people to have gas? Drugs known to cause flatulence include laxatives, antacids,...
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Article 5 mins
Ecology and economy under the fig tree in South Asian Cities
Society, Politics & Law

Ecology and economy under the fig tree in South Asian Cities

...carbon dioxide that our industrial societies spew out. It is said that Gautam Buddha attained enlightenment under this tree, so there is also a spiritual dimension to this natural heritage. [A flower stall on a street under the shade of a fig tree in Bhabanath India, a man standing at the side]A flower stall under a fig tree in Kolkata, West Bengal, India Cultural...
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Article 5 mins
Let your money do the talking: fossil fuel divestment and COP26
Nature & Environment

Let your money do the talking: fossil fuel divestment and COP26

...carbon sector can reduce the risk of exposure to stranded assets while simultaneously helping achieve net-zero. COP26 has been touted as the last best chance to avert climate catastrophe. One of its four goals is to mobilise finance to help achieve climate aims with a target of raising $100bn per year towards financing the pathway to net zero. COP-associated global and...
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Article 10 mins
Europa’s icy shell
Science, Maths & Technology

Europa’s icy shell

...carbon, sulfur, oxygen, hydrogen and nitrogen. These are likely to come from the ice interacting with the ocean below. Thanks to these missions and their discoveries, Europa is now a prime target for astrobiological research. Interestingly, the moon has a notable lack of craters and mountains, suggesting the surface is quite young and is regularly changing, similar to...
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Article 5 mins
What’s corruption got to do with climate change, and why should we care?
Nature & Environment

What’s corruption got to do with climate change, and why should we care?

...carbon future are mind-boggling. President Biden of the USA acknowledged that more needed to be done3 by the rich world to help fund climate mitigation policies and announced a doubling of their commitment to climate financing to $11.4 billion per year. Such huge sums are encouraging but it’s not only the social scientists who study corruption4 who are concerned that...
View article What’s corruption got to do with climate change, and why should we care?
Article 10 mins