Masonry oven India, tandoors are traditional clay ovens, although these days modern electrically fired tandoors are available. The open-topped tandoor is a transitional design between the earth oven and the Roman-plan masonry oven. In the precolumbian Americas, similar ovens were often made of clay or adobe and are now referred to by the Spanish term "horno" (meaning "oven"). Horns are also traditional in the American Southwest. The traditional direct-fired masonry design is often called a "Roman" or "black" oven and dates in Western culture to at least the Roman Republic. It is known as a black oven because the fire generates soot
Institution of Diesel and Gas Turbine Engineers Institution of Diesel and Gas Turbine Engineers The Institution of Diesel and Gas Turbine Engineers is the professional association for engineers in the diesel and gas turbine industry in the UK and internationally. Diesel engines and gas turbines are broadly related because they use a similar thermodynamic cycle, and both are often used (and interchangeable) for power generation for heating and electricity in large installations. It was established in 1913 as the Diesel Engine Users' Association. It changed to its current name in 1984. It is based in the north-west of Bedford towards Brickhill at Bedford Heights"" Types of membership