Sentence examples for derivative ratio from inspiring English sources

Two different methods were used, partial least-squares (PLS) method and a new derivative ratio method, namely extended derivative ratio (EDR).

The proposed ratio difference, derivative ratio and mean centering are ratio manipulating spectrophotometric methods that were satisfactorily applied for selective determination of CFQ within linear range of 5.0 40.0 μg mL− 1.

In the derivative ratio method, Beer's law is obeyed in the concentration range of 4 18 μg ml−1 of glafenine, with mean percentage recoveries of (100.03±0.87)% and (99.90±0.95)% at wavelengths 270 and 377 nm, respectively.

Comparable double divisor ratio spectra derivative, area under curve of derivative ratio and mean centering of ratio spectra spectrophotometric methods were introduced for determination of orphenadrine citrate (ORPH), caffeine (CAF) and aspirin (ASP); a combination for symptomatic relief of mild to moderate pain of acute musculoskeletal disorders; with evident accuracy and precision.

Salinas et al. [21] developed derivative ratio spectrophotometry (1DD) method to remove the interference of one component and to determine the other.

This method was then modulated to be simultaneous by coupling with amplitude modulation theory to generate simultaneous derivative ratio method (S1DD) [16].

For the determination of carbapenems, including meropenem, only first-derivative, first-derivative spectrum ratio and third-derivative UV spectroscopies were used, which permitted eliminating interferences originating from degradation products with an open β-lactam ring and dimers [20, 25, 26] formed in aqueous solutions.

The problem of overlapping open-ring degradation products as the main degradants was solved by employing first-derivative, first-derivative spectrum ratio and bivariate analyses.

Supporting this conclusion, the derivative log2 ratio spread (which is the average log ratio difference between adjacent probes of an array) for the 4 replicate self-self hybridizations was low (0.165).

First derivative of ratio spectra (1DD) and multivariate calibration chemometric methods are proposed for determination of glafenine in presence of its degradate, glafenic acid.

Fig. 7 First derivative of ratio spectra of CAF (2 26 μg/mL) using normalized PCT spectrum as a divisor.