A navigational aid used in the United States and Canada to mark a channel. Green triangular daymarks should be kept on the left when returning from a larger to smaller body of water.

The process of degrading organic material (biomass) by microorganisms in aerobic conditions.

A slightly sloped roof, usually with a tar and gravel cover. Most commercial buildings use this kind of roof.

A type of heating appliance that performs more than one function, for example space and water heating.

A device that that converts direct current electricity (from for example a solar photovoltaic module or array) to alternating current for use directly to operate appliances or to supply power to a electricity grid.

A device that removes airborne particles from breathable air. Negative ions are produced and give up their negative charge to the particles. These new negative particles are then attracted to the positive particles surrounding them. This accumulation proc ...

Containers loaded at port of loading and discharged at port of destination.

A type of hydroelectric facility that uses the river flow with very little alteration and little or no impoundment of the water.

A power-operated device with one or two drums to ensure that the working part of the fibre rope is reeled in no more than one layer. It may be used in conjunction with a rope storage reel.

(ITS)An electronic communications network that links nine US markets: the New York (NYSE), American.

The tendency in a boat to keep an upright position or to return to it when careened over.

The space provided for stowage of provisions or other materials.

A high-intensity discharge lamp type that uses mercury and several halide additives as light-producing elements. These lights have the best Color Rendition Index (CRI) of the High-Intensity Discharge lamps. They can be used for commercial interior lightin ...

The physical material upon which a photovoltaic cell is applied.

Directly or indirectly taking the opposite side of a customer's order into the handling broker's own.

A measurement applied to filters or filter media to indicate the particle size at which suspended solids above that size will be removed.

The successor to the European Currency Unit (ECU) as the European currency. The euro was introduced.

(1) Before finishing to final dimensions, repeatedly heating a ferrous or nonferrous part to or slightly above its normal operating, temperature and then cooling to room temperature to ensure dimensional stability in service. (2) Transforming retained aus ...

The closeness of agreement among measurements of the same value of the same quantity where the individual measurements are made under different defined conditions, i.e. by different methods or with different measuring instruments.