The phrase "a core which" is correct and usable in written English.
It can be used when referring to an essential part or element of something, often followed by a description or explanation.
Example: "The project focuses on a core which drives innovation and efficiency within the organization."
Alternatives: "an essential element that" or "a fundamental aspect which".
"You have a very weak periphery and a core which is not as strong as everyone seems to believe".
But as a building's tenants change, there may be a need to run ductwork through a core, which means cutting holes in concrete heavily reinforced with steel bars.
By analyzing thousands of layers sediment in a core, which is a column of sediment drilled from the lake bottom, a team of scientists has reconstructed the region's climate as the savannah changed to the Sahara.
"It's like the layers of an onion: you have to create a core which is actually very deep, and then you build the shells around it that allow people to easily get into the game," he said.
Producers are paying around 7,000 pesos (£464) for a ton of the plant, stripped down to a core which yields a sugary liquid that is fermented and distilled twice before becoming tequila.
Broadly speaking, there are at least two different European economies with conflicting needs: a core which includes Germany, Austria, France, Luxembourg and Belgium, and a periphery which includes Spain, Portugal, Italy and Ireland.The core is finally recovering from several years of sluggish growth.
The β2′ precipitate, marked in Figure 2a, is a plate containing a brighter core, which corresponds to an enrichment of Zr (Figure 2b).
Hepatitis delta virus contains a ribonucleprotein core which includes a 1.7 Kb circular single-stranded RNA genome and several copies of the only virus encoded protein, the so called delta antigen (reviewed in Taylor, [3]).
Waitukaitis and Jaeger discovered that, upon impact, the rod squeezed the cornstarch grains so that they jammed into a rigid core, which exerted an upward force sufficient to prevent the rod from sinking.
For it wasn't just the unparalleled sensory spectrum, there was a communal satisfaction, tapping into a primordial core, which came from taking part.
TAG and steryl esters are forming a hydrophobic core which is surrounded by a phospholipid monolayer with few proteins embedded (for a review see [13]).
