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.
By certification, VA is referring to the certification you get by taking a specific test for a field of employment, and not a certificate you receive for completing training. 1  Get detailed information in the VA Licensing and Certification Pamphlet.icensing and Certification. Open new doors to employment by getting licensed or certified as a mechanic, medical technician, attorney, or other professional. Often required for work in certain fields, these tests may be eligible for GI Bill reimbursement.