Before the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) was created and implemented, there were many different regulations on hazard classification in use in different countries, resulting in multiple standards, classifications and labels for the same hazard.
Pneumatics Vs Hydraulics. The pros and cons of each system. Pneumatics offer a very clean system, suitable for food manufacturing processes and other processes which require no risk of contamination. Hydraulics is generally not used in these environments due to the risk of hydraulic oil leaks from faulty valves, seals or burst hoses.
CNS vs PNS. CNS is the Central Nervous System that functions in order to coordinate each and every activity taking place in all the parts of the body of every bilaterian organism (animals evolved to a better organic stage than sponges and jellyfish).