The phrase "a core zone" is correct and usable in written English.
It can be used to refer to a central or essential area within a larger context, such as in environmental studies, urban planning, or organizational structures.
Example: "The conservation project focuses on protecting a core zone that is critical for the survival of endangered species."
Alternatives: "a central area" or "a primary zone".
The proposed method considers the Shell pulverized coal entrained-flow gasifier with two parts: a gasification core zone and a heat exchange and water gas shift zone.
The load displacement response, size of a crushed core zone and the depth of a residual dent are measured in the testing.
For example, Niwa et al. (2015) showed that fault zone consists of a fault core zone (primary slip zone) and fracture zones on both sides of the core zone.
The reserve consists of a fully protected core zone, a buffer zone in which low intensity forest use is permitted, and a forest restoration zone in which forest regenerates after shifting cultivation.
This nature reserve consists of a fully protected core zone, a buffer zone in which low intensity forest use is permitted, and a forest restoration zone in which forest regenerates after shifting cultivation.
Fig. 4 Cumulative abundance of regenerating tree species (trees<6cm) in 40 initial random subplots in the core zone (a, 133 species), buffer zone (b, 130 species), and restoration zone (c, 80 species).
Fig. 3 Cumulative abundance of tree species (trees≥6cm) in 40 initial random plots in the core zone (a, 193 species), buffer zone (b, 173 species), and restoration zone (c, 133 species).
It is here that clouds descend into the wilderness, herds of wild elephants freely roam on roadside pavements, traditional tribal folk live along the edges of the jungle in houses made of bamboo and cow dung, the big cat does not elude you on a trek through the core zone of the forest, and tiny fresh water islands are strewn along the length of the district for an anytime dip.
