Plutonium-239 is also one of the three main isotopes demonstrated usable as fuel in thermal spectrum nuclear reactors, along with uranium-235 and uranium-233.

A p–n junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor.

A valve which regulates the flow of a fluid. It is remotelyoperated as the correcting unit of an automatic control system. The actuator is operated by compressed air.

The loading/offloading system for dry powder material (cement) developed by Merevido Europe B.B.

A pneumatic motor (air motor), or compressed air engine, is a type of motor which does mechanical work by expanding compressed air.

Pneumatics is a branch of engineering that makes use of gas or pressurized air.

An electric rudderpropeller, see Electric podded propulsors.

This device floats on the surface of the water, held in place by cables connected to the seabed.

The point in the electric circuit where a microgrid is connected to a main grid.

The polar climate regions are characterized by a lack of warm summers.

A service based on polar orbiting satellites which receive and relay distress, alerts from satellite EPIRBs and which provides their position (SOLAS, Chapter IV).

Polarity symbols are a notation for electrical polarity, found on devices that use direct current (DC) power, when this is or may be provided from an alternating current (AC) source via an AC adapter.

A substance that makes air, waters, soil etc dangerously dirty.

Pollution is the introduction of contaminants into the natural environment that cause adverse change.

The highly-sophisticated 3830t displacement multi-purpose ship built in 1998 by Stralsund shipyard, Volkswerft GmbH.

Collection and subsequent pumping of viscous oil is difficult unless specially developed equipment is used for spill clean up.

The new generation of advanced coast protection vessels to deal with potential emergencies.

A high molecular weight material created from lower molecular weight constituents by chemical reaction. Polymers with resinous characteristics are frequently used in paints.

A type of fuel cell being developed mainly for transport applications, as well as for stationary and portable fuel-cell applications.

These collectors are an alternative to metal collectors and are now being produced in Europe.