The phrase "a natural reference" is correct and usable in written English.
It can be used when discussing something that serves as an instinctive or inherent point of comparison or context.
Example: "In her analysis, she used a natural reference to the local wildlife to illustrate her point about environmental conservation."
Alternatives: "an inherent reference" or "an instinctive reference".
Although there is naturally no "correct" mean level of ERS, using μ ERS =0 provides a natural reference as 0 corresponds to the overall mean on ERS.
Social context affects people's life satisfaction because it provides a natural reference for evaluating their own socioeconomic standing.
Cores were also taken from a natural reference site to serve as the nearest possible comparison to donor site conditions prior to dewatering.
Accordingly, the deviations of a river's morphology from a natural reference condition have been attributed to the degree of artificiality in the observed river section and river restoration works mainly aimed at reducing artificial constraints within the river reach.
Her pop-inflected, rigorously casual abstraction is a natural reference point for Ms. Kilimnik's brushy historical fantasies, for Frances Stark's free-associative collages, and for a very Heilmann-esque Rachel Harrison piece that includes a harlequin-patterned sculpture and the film "Pirates of the Caribbean" projected on the gallery wall.
The goal of this study was to understand if and how different revegetation strategies (seedlings (SDL); moss layer transfers (MLT); seedlings with moss transfer (SMLT) and a control treatment (CTRL)) influence the evolution of biogeochemical functions in the constructed fen relative to a natural reference (REF).
Indeed, such an homologous system would be a more natural reference to interpret the data than an analogy.
Sláma, J. et al. Plešovice zircon - a new natural reference material for U-Pb and Hf isotopic microanalysis.
(I remembered Milo making a quite natural reference to his mother dying of pancreatic cancer but didn't remember any particular revelation that Milo was unfeeling).
A natural gas reference material, NIST RM 8559, traceable to the international standard Vienna PeeDee Belemnite (VPDB) was used to calibrate the SIS.
Figure 4 Backscattered electron images for (a) natural orpiment reference material, (b) laboratory-made arsenic sulfide glass cake (b) before and (c) after grinding.
