Due to construction and functional characteristics above described, with the internal reflux column it is possible to get selective the separation of components of extremely complex mixtures, with similar chemico-physical characteristics, not economically separable otherwise.
Uniform numbers in American football are unusual compared to those in other sports. They are displayed in more locations on the uniform; they are universally worn on both the front and back of the jersey; and in many cases TV numbers are displayed on either the jersey sleeves, the shoulder pad, or occasionally on the helmets.
Differentiation. During a game, most leagues require goalkeepers to wear uniforms that are different from those of the opposing teamâs goalkeeper and their own teammates. This helps the referee distinguish the goalkeeper from other players when everyone is crowded near the goal.afety. Goalkeepersâ uniforms have special padding to offer protection against speedy shots. For example, a goalkeeperâs shirt typically has long sleeves and special padding over the elbows, chest and shoulders to minimize the sting of a blocked shot. Goalkeepersâ pants typically have light padding as well.