Primer is mainly defined as the initiative of DNA formation. It is the strand of the nucleic acid. This is basic structural unit in DNA synthesis which includes purines and pyrimidines. It requires polymerase enzyme to start replication process.
The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on September, 2014