The phrase "a core activity in" is correct and usable in written English.
It can be used to describe an essential or fundamental task or function within a specific context or field.
Example: "Research and development is a core activity in the technology sector that drives innovation."
Alternatives: "a fundamental task in" or "a key function in".
Trading derivatives is a core activity in the financial markets.
The quantification of phenomena and processes is a core activity in science and engineering and is therefore a prominent feature in the spoken and written research genres of hard sciences.
Facilitation of early learning was a core activity in almost all programs.
The second implication of molecular pathological epidemiology relates to a core activity in clinical medicine.
This implies that mental health care is a core activity in primary care [ 2].
Coronary heart disease (CHD) is the leading cause of death in the developed world, and its prevention a core activity in current UK general practice.
As knowledge transfer is growing as a core activity for universities, at least in HICs, there are growing opportunities for systematic reviews to be seen as core activities too.
Each extracted item was subsequently scrutinised to ensure it represented an inherent requirement; that is a core activity that is considered essential in the study of physiotherapy [ 21, 22].
From 2004 to 2012, the programme was integrated and maintained as a core activity of the National Public Health Laboratory NPHLL) and resulted in an increased number of participating laboratories and pathogens brought under surveillance.
The core activity in an online lab is an investigation (experimentation or exploration) with (physical or virtual) equipment or the possibility of working directly with the results of such an investigation (in the form of data sets).
The company's core activity in the first decade was focused on providing internet-related products and services, such as online search, online advertising technologies, software and mobile application development and cloud computing.
