The phrase "as an additional requirement" is correct and usable in written English.
It can be used when specifying extra conditions or criteria that need to be met in a particular context.
Example: "To complete the application process, you must submit your resume. As an additional requirement, please include a cover letter detailing your experience."
Alternatives: "as a further condition" or "in addition to this requirement".
For the SPM application, as an additional requirement, a very low surface roughness of the scanned area becomes imperative.
The maximum display luminance and color gamut are, respectively, taken as an additional requirement for determining the relative primary luminances of the display.
Ease of manipulation relates to average solutions per case because this (more than one solution) can be seen as an additional requirement for CBR systems.
As an additional requirement, the IIS must be activated before a response can be mounted.
We formulate this as an additional requirement: H2.1 GT1 = GT2 in Cell i ⇒ ∀ j > i, GT1 ≤ GT2 in Cell j.
By analyzing other genes known to be involved in gene silencing, we identify RDR2 as an additional requirement for the SI response in some accessions.
Neuro-vascular imaging studies (such as BOLD fMRI) have an additional requirement imposed by the filtering and noise properties of the method: only some temporal frequencies of neural modulation are detectable.
This is an additional requirement for the biological as well as economic success of control programs based on genetic strategies such as the sterile insect technique.
S6K1 must be phosphorylated by PDK1 at its T loop site to become activated, but also has an additional requirement for PDK1 function as its activation is dependent on PKB, which regulates S6K1 via modulation of TSC-1/2 function and mTOR (mammalian target of rapamycin) (Inoki et al, 2002; Jaeschke et al, 2002; Manning et al, 2002).
We note that, in more than 38,000 words of interview content, the word "governance" was mentioned only twice, once as an unanticipated additional requirement for implementation and once as a lesson learned after implementation.
