The phrase "a reference level of" is correct and usable in written English.
It can be used in contexts where you are discussing a baseline or standard measurement for comparison or evaluation.
Example: "The study established a reference level of air quality to assess the impact of pollution on public health."
Alternatives: "a baseline of" or "a standard level of".
The C.D.C. now uses a reference level of 5 micrograms per deciliter to identify children with blood lead levels that are elevated.
Rates of G C→A T type polymorphisms were set to a reference level of 1 such that for DAF ≤ 0.1, 1 equals 0.016 per site, and for DAF ≥ 0.9, 1 equals 0.002 per site.
The mean activity concentration of 226Ra was 95 Bq kg−1, which is far below the limit recommended by the U.S. Environmental Agency USEPAA) for its application in agriculture (370 Bq kg−1) and the Brazilian Commission of Nuclear Energy Resolution 113 that established a reference level of 1000 Bq kg−1 of 226Ra or 228Ra for the use of PG in agriculture as well as building materials.
According to this procedure, after fixing a reference level of degradation of a specified pollutant (90%%), a pseudo-first-order kinetic constant is evaluated.
This literature typically proposes that there is a reference level of education that is required for a particular job, and when a worker is hired with an education level that diverges from the required level, a mismatch occurs 4.
where Bs[i, k, n] is a normalizing factor which is calculated for a reference level of 0 dB and can be pre-computed since it does not depend on the data.
Finally, emissions from FM, considering national circumstances, age-class structures and past as well as present management practises, should be accounted by the use of a reference level "to exclude the effects of natural and country-specific characteristics" [22].
Therefore, the ICRP introduced the concept of the 'diagnostic reference level' (DRL), with the objective of providing a reference level for the radiation dose for standard radiographic and CT examinations [5].
The results were interpreted as an estimate of the change in risk per unit increase of each continuous variable or difference in risk to a reference level in case of categorical variables.
The bolus tracking technique involves acquiring a pre-contrast image at a reference level with placement of an ROI over a target vessel.
The results of the study contribute evidence supporting the use of a reference level lower than the current guideline of 200 Bq m−3 for the province.
