The phrase "permanently effective" is correct and can be used in written English.
You can use this phrase to describe something whose effects are long-lasting. For example, "The new law was permanently effective, ensuring the protection of the endangered species."
DOI: http://dx.doi.org/10.7554/eLife.07116.008 Using our best fitting parameter sets (set 9 and 13 from Table 1) we simulated the effects of a 100% permanently effective varicella vaccine given to all children aged 1 year (100% coverage).
Linda A. Woolley, who had been serving since May as acting president and chief executive at the Direct Marketing Association, New York, was named to those posts permanently, effective immediately.
The later that tamoxifen is given before the presentation of clinical cancer, the less likely it is that it will be permanently effective.
For contraception of stray male dogs, desirable methods need to be permanently effective, minimally invasive, simple, rapid, and inexpensive, with potential for adoption in large-scale animal birth control programs [ 3].
and has made a strong argument that City leaders should relieve him of his duties -- permanently and effective immediately for the good of the community.
The court approved the recommendation and fine on September 25 , 2008 and ordered that Thompson be permanently disbarred effective 30 days from the date of the order so Thompson could close out his practice.
"But if they were to be permanently reintroduced, efficient, effective and affordable ways of managing and reducing potentially significant impacts on intensively farmed land and other interests would have to be found".
Some of the listed opt-out methods may not be permanently or completely effective.
Furthermore, agents that are considered foreign elements and the aging process can temporarily or permanently disturb the membrane effective potential of cell environmental pH levels, causing skewed signal transduction and crosstalk between and among cells/tissues for achieving and controlling the required activities of the cells.
It can be very effective but permanently destroys normal bone marrow stem cells in the treatment field.
They are the terms of the momentarily effective, not the permanently true or the permanently illuminating.
