The phrase "a valuable focus" is correct and usable in written English.
You can use it when discussing an important or beneficial area of concentration or attention in a particular context.
Example: "In our research, we have identified a valuable focus on sustainable energy solutions that can drive innovation."
Alternatives: "an important emphasis" or "a significant concentration".
Here the ETS has provided a valuable focus on carbon and underwritten the improvements made.
In the publication by Frankel, the site of first recurrence was a valuable focus of their prognostic factors analysis.
The differentially regulated genes identified here, particularly those associated with signalling pathways and cytoskeletal changes represent a valuable focus for dissecting integrated regulation by biochemical and mechanical signals.
However, some gene expression differences between chRCC and oncocytoma have been recently identified and could be a valuable focus of future study[ 65].
As a statement of intent they provide a valuable focus for feedback and input into the review from a wider audience.
A valuable focus for future research will thus be to clarify whether non-classical ILC tumors more closely resemble high-grade IDCs in their clinical behavior and therapeutic benefit.
I am not a theologian or a historian, and I feel no call to become a defender of the faith, so in my case the search for what remains valuable focusses on language itself: Catholic prayer, ritual, the naming of things.
Cost analyses on different alternative diagnostic processes represent a valuable alternative for focussed cost reductions, instead of proportional fund reduction, and an opportunity for the measurement of the outcome of the diagnostic and therapeutic processes [15, 16, 17, 18].
The Cancer Genome Atlas (TCGA) (http://cancergenome.nih.gov) is a valuable data resource focused on an increasing number of well-characterized cancer genomes.
In general, CHOPPI provides a valuable resource for focusing follow-up experimental characterization and immunogenicity studies on the possible impurities of greatest predicted importance and relevance.
One of the arguments speaking against this proposition was that a case manager with a degree in social work, for example, could also make a valuable contribution by focusing specifically on the patient's social context.
