The phrase "are best maintained" is correct and usable in written English.
It can be used when discussing the optimal conditions or practices for keeping something in good condition or functioning well.
Example: "These systems are best maintained through regular updates and monitoring."
Alternatives: "are most effectively preserved" or "are ideally kept".
And behind this is not just the dress-down revolution but a very American realization that the highest standards are best maintained through profitability.
Comparative biophysical studies combined with empirical phase diagram analysis show that both structural integrity and conformational stability of sEphB4 and sEphB4 HSA are best maintained above pH 5 and below 50°C, with different structural phases observed outside this range.
Trails are best maintained when the possible effects of erosion due to flooding or drainage are taken into account.
α is best maintained between 1 and 2 for effective performance.
The activity of tyrosinase upon long-term storage is best maintained in buffer at temperatures of −80 or +4°C.
Conversely, the recharge efficiency is best maintained as cells dry out with a structure having high tortuosity, minimum anisotropy, and small and uniform pore size.
The meaning of this exhortation has become clearer since then: good order is best maintained when everyone knows their proper place, and when leaders aren't afraid to remind them of where they belong.
As Michael Robertson and Garry Walter suppose, psychiatric power in practically all societies expands on the grounds of public safety, which, in the view of the leaders of the USSR, was best maintained by the repression of dissidence.
Microvascular perfusion quantitatively assessed with CES was best maintained by immunosuppressive therapy with everolimus.
However, it is unlikely that degradation of the hydrogenase would be induced by anoxia, the condition under which activity of the enzyme is best maintained.
Conclusions: Zinc stores are limited and rapidly depleted by acute intestinal illness; they seem likely to be best maintained in vulnerable populations by regular supplementation in a public health (primary prevention) strategy rather than a therapeutic and secondary prevention strategy triggered by acute diarrhea.
