The phrase "acted as barriers" is correct and usable in written English.
It can be used to describe something that functions to obstruct or prevent progress or movement in a particular context.
Example: "The new regulations acted as barriers to entry for smaller companies trying to compete in the market."
Alternatives: "served as obstacles" or "functioned as impediments".
Furthermore, GO also contributed to the enhancement of thermal conductivity but acted as barriers in the conductive path.
During an active extensional stage, horsts, which formerly acted as barriers separating the Maghara sub basin from the main ocean, subsided.
Cross-section observation indicated that oxygen propagated through Moss, whereas T2 and Ti5Si3 phases acted as barriers against oxygen attack during the tests.
For example, Henderson and Dancy ([2007]) found that factors including student attitudes towards school, departmental expectations of content coverage, lack of time, and class size each acted as barriers to the adoption of new teaching methods.
The need to accumulate such assets acted as barriers that prevented younger persons from pursuing pastoral and agro-pastoral activities.Off-farm opportunities pursued by Turkana and Mandera pastoralists seemed to be less remunerative compared to pastoralism and agro-pastoralism, an indication that households undertook off-farm activities as a coping strategy.
Because the Jigokudani valley extends along a north-northeast to south-southwest axis, and because the vents are located on the valley floor, it is possible that the valley walls acted as barriers to ejecta, preventing ballistics from being ejected far beyond the valley walls along both sides of the valley.
If certain landcover types consistently act as barriers to movement, their occurrence could serve as a proxy for population isolation.
Oil droplets distributed in film acted as barrier against water vapour adsorption and migration through the film.
The outer gelled layer increased the dissolution medium diffusion coefficient and acted as barrier for drug release.
Other government regulations and practices may also act as barriers to trade.
Immunizations, however, do not act as barriers to frequent ear, respiratory, and gastrointestinal infections.
