The phrase "active in the area of" is correct and usable in written English.
It can be used to describe someone's involvement or engagement in a specific field or subject matter.
Example: "She has been active in the area of environmental conservation for over a decade."
Alternatives: "engaged in the field of" or "involved in the domain of".
This radical group, active in the area of the Rhine and the Netherlands, strove for a form of spirituality immune from sin even in the flesh and imbued the concept of lust with a paradisical innocence.
Mr. Arman blamed the Taliban, which had been active in the area of the attack, Qadis District.
In the 5th century a secondary glass workshop was active in the area of the harbour.
As vice-president of the DAAD, Huber has been active in the area of the internationalization of German universities for many years now.
The short-term SSE faults are distributed between clusters OK-RA and OK-RB, and the LFEs are not active in the area of the SSE faults.
In the 5th century, a secondary glass workshop devoted to the shaping of glass vessels starting from raw glass chunks and, possibly, glass cullet, was active in the area of the harbour.
Instrumentarium is active in the areas of anesthesia, critical care, and medical imaging technology through the brands Datex-Ohmeda, Ziehm and Spacelabs.
I used to wonder why, given that I had been (and still am) so active in the areas of race and gender politics through my membership of Southall Black Sisters, an Asian women's group based in west London.
In addition, the research and studies were very active in the areas of ground control, support-strata relationship, cavability of top coal, and methods of top-coal caving, which provided various theories and practices.
DAN LASHOF is the director of NRDC's climate center and is active in the areas of national energy policy, climate science and solutions to global warming.
Each integration is defined by one or more curated gold standards [ 12], each listing genes whose products are known to be active in the areas of interest (e.g. the photosynthesis pathway, dry seed developmental stage, or leaf tissue).
