"effective as from" is correct and usable in written English.
You can use it to indicate a date or time from which something will happen or become effective. For example, "The pay cut will be effective as from April 1st."
An amendment shall become effective as from the date of the decision of the Council or Conference as appropriate.
Completion of the mail survey was effective as from 1 January 1980 for men, and 1 February 1981 for women, during which time 525 persons had died.
As a result, an Early Childhood Care and Development Programme - aimed at giving all Mauritian children aged 0 to 8 years the opportunity to realise their right to survival, protection, care and optimal development - was included in the revised structure of the CP, effective as from January , 1999
Question: Would guidance from a technician be as effective as guidance from a clinician?
The present study sought to replicate this finding, and determine whether support from a technician is as effective as guidance from a clinician.
In contrast, we used SFs from healthy individuals as negative controls because, as stimulators of bone resorption, SFs from patients with OA were as effective as SFs from patients with a loose prosthesis.
For Parker, the bottom line in social media measurement is this: "For us 10,000 followers from all over the world is not nearly as effective as 100 from our community who are willing to 'talk to us.'".
The "drop" several minutes in where the bass and drums come back in is every bit as effective as any from the parallel universe of dubstep.
Online marketing firm WordStream has an explanation for why Facebook ads may not be as effective as those from its top competitor, Google.
I did explore different crops, and the addition of color,, however, as is often the way the simplest idea was the most effective as shot from above and in full the shell appears to be unfurling, like a new life/world opening up.
As the structure/function of HS sugar chains on the same core proteins differs significantly between different organs or tissues [4], [37], injected GAGs from extra-ocular source used in this study may not have been as effective as those from the ocular fluid.
