This is the series of blocks Amino acid substitution matrices (BLOSUM), all of which are derived based on direct on direct observation for every possible amino acid substitution in multiple sequence alignments.
A volt-ampere (VA) is the unit used for the apparent power in an electrical circuit, equal to the product of root-mean-square (RMS) voltage and RMS current.[1] In direct current (DC) circuits, this product is equal to the real power (active power) [2] in watts.
Quick Answer. A VAV system, also known as a variable air volume system, is a type of heating and cooling system that uses a large air handler and central duct system. According to High Performance HVAC, this setup allows an engineer to accommodate very large areas that need to be regulated by a single cooling or heating system.