In the US, an expense allowed by the Internal Revenue Service which is deducted from adjusted.

An inspection cover or port in an air receiver tank.

Is the property of a substance that gauges the potential or driving force for the flow of heat.

The amount of BTU's/hour or kW's produced by a heating system from the burning of a fuel.

The merchant ships on the official registers of any nation.

A gas that does not react with other substances; e.g. argon or krypton; sealed between two sheets of glazing to decrease the U-value (increase the R-Value) of windows.

A market in which sellers outnumber buyers and where the trend of share prices is consequently a.

The value of all the assets employed in a business, including equity and preference capital,.

An index calculated from total dissolved solids, calcium concentration, total alkalinity, pH and solution temperature that shows the tendency of a water solution to precipitate or dissolve calcium carbonate.

Classifications of fires developed by the National Fire Protection Association.

Aging under conditions of time and temperature greater than those required to obtain maximum change in a certain property, so that the property is altered in the direction of the initial value.,/dd>

The transfer of heat through matter or space by means of electromagnetic waves.

The energy developed through the use of heat energy.

A house built into the ground or slope of a hill, or which has most or all exterior surfaces covered with earth.

Hoisting the ensign at 8 a.m. and down at sunset.

That part of an audio-modulated radiosonde consisting of the baroswitch, the sensing elements, the reference elements, and the relay.

A registered trademark name for houses built with tires, aluminum cans, and earth.

To haul in or bind something together in order to create more space.

Owners or operators of vessels providing transportation to shippers. The term is also used to refer to the vessels.

When the sheer curves down towards the bow and stern.