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Iron Fist APS. Iron Fist (Hebrew: חץ דורבן, Hetz Dorban, lit. "Porcupine Arrow") is a hard-kill active protection system (APS) designed by Israel Military Industries (IMI), with a modular design allowing adaptation to a range of platforms ranging from light utility vehicles to heavy armoured fighting vehicles.
SO 4 2− + ATP ⇌ APS + PP i. The conversion of APS to PAPS is catalysed by APS kinase: APS + ATP ⇌ PAPS + ADP Structure of adenosine 5′-phosphosulfate (APS). Reduction of APS leads to sulfite, which is further reduced to hydrogen sulfide, which is excreted. This process is called dissimilatory sulfate reduction.
Air data attitude heading reference system ADC Air data computer: ADD Acceptable deferred defect ADF Automatic direction finder: Navigation equipment ADI Attitude Director Indicator: ADIRS Air Data Inertial Reference System ADIRU Air Data Inertial Reference Unit: ADIZ Air defense identification zone: ADJ Adjustment Mechanical term ADM 1
The British imperial system uses a stone of 14 lb, a long hundredweight of 112 lb and a long ton of 2,240 lb. The stone is not a measurement of weight used in the US. The US customary system uses the short hundredweight of 100 lb and short ton of 2,000 lb. Where these systems most notably differ is in their units of volume.
The International Terrestrial Reference System (ITRS) describes procedures for creating reference frames suitable for use with measurements on or near the Earth's surface. This is done in much the same way that a physical standard might be described as a set of procedures for creating a realization of that standard.
The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement. It is the only system of measurement with official status in nearly every country in the world, employed in science ...
One that is not is a three-unit system (also called English engineering units) in which F = ma that uses the pound and the pound-force, one of which is a base unit and the other, a non-coherent derived unit. In place of an explicit proportionality constant, this system uses conversion factors derived from the relation 1 lbf = 32.174 lb⋅ft/s 2 ...
An active protection system (APS) is a system designed to actively prevent certain anti-tank weapons from destroying a vehicle. Countermeasures that either conceal the vehicle from, or disrupt the guidance of an incoming guided missile threat are designated soft-kill active protection measures.