Volcano an extinct volcano from a dormant (inactive) one. Dormant volcanoes are those that have not erupted for thousands of years, but are likely to erupt again in the future. Volcanoes are often considered to be extinct if there are no written records of its activity. Nevertheless, volcanoes may remain dormant for a long period of time. For example, Yellowstone has a repose/recharge period of around 700,000 years, and Toba of around 380,000 years. Vesuvius was described by Roman writers as having been covered with gardens and vineyards before its eruption of 79 CE, which destroyed the towns of Herculaneum and
Dormant therapy not because the patent for the drug has expired or will expire prior to the completion of research and the federal approval process. Weak or no patent protection is a disincentive for drug development as it hinders a manufacturer’s ability to recoup the investment in expensive clinical trials. This disincentive is even more pronounced for treatments for more complex conditions such as Alzheimer’s, which require more clinical data than conditions which currently have existing treatments. Dormant therapy The term “dormant therapy” refers to a new drug or a new biological product which was made the subject of a request for