It is the unit to measure radiation. Sievert is the same as J/KG, whatever it is, how much energy that radiation causes in the middle that she is interacting.

Originally known as the American Society for Testing and Materials, is an American agency standards. ASTM develops and publishes technical standards for a wide range of materials, products, systems and services.
ASTM F792-08 is that evaluates the performance of the X-ray security systems.

Radiological protection projects obtained by barium mortar – Barite is a mineral barium sulfate with chemical formula BaSO4. Its name comes from the Greek Barus (heavy)
Importantly, for the use of equipment manufactured by SIMV is not required Barium room.

Energy that spreads or spreads in corpuscular form or electromagnetic waves from a source.

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