Exact(4)
All fluorescence values were calibrated using the fura 2/AM Calcium Imaging Calibration kit (Invitrogen).
Nitrogen isotope values were calibrated using the international standards USGS-25 and USGS-26 with assigned values of −30.4‰ and +53.7‰, respectively.
The measured OD values were calibrated using a range of Cry1Ab and Cry3Bb1 standards made from purified toxin solutions.
Creatinine values were calibrated using regression to age- and sex-adjusted mean values from a nationally representative U.S. survey as described previously (22).
Similar(56)
For each sample, values of δN and δC were calibrated using values from established laboratory standards, run every 12 samples, calibrated against NIST Standard Reference Materials IAEA-N1, IAEA-N2, IAEA-N3, IAEA-CH7, and NBS-22.
The values from fluorescence spectrophotometry were calibrated using an absorption coefficient of 30.4 mM−1 cm−1 (Brouers and Michel-Wolwertz 1983; Sperling et al. 1998).
The actual purities of all standards were calibrated using values measured accurately by quantitative amino acid analysis (AAA).
Density values for soft tissue and bone were calibrated using a phantom (GE Health Care) containing air bubble, water and hydroxyl apatite rod.
Both δ18O and δ2H values were determined relative to internal standards that were calibrated using Vienna-Standard Mean Ocean Water V-SMOWW).
High magnifications were calibrated using graphitized carbon.
The present work demonstrates that these colors can be easily captured using standard video equipment and that the corresponding thickness values can be calibrated using simultaneous normal-incidence laser interferometry at the center of the substrate.
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