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Principle of refractive index detection. RefractoMax521 Refractive Index Detector (called as “RefractoMax521” hereafter) is a high-performance universal detector designed for analyses requiring the continuous monitoring of the refractive index of a flowing liquid with respect to a reference.
11 paź 2023 · Retention indices (RI) in gas chromatography are briefly reviewed. •. Various incorrect usages of RI as reported in the literature are summarised. •. Care with quoting enantioseparation RI data are recommended. •. An overview of methods to estimate RI in multi- and comprehensive 2D GC are included. Abstract.
30 sie 2023 · The performance of different RIpred predictive models was evaluated using 10-fold cross validation (CV). The best performing RIpred models were identified and when tested on hold-out test sets from all stationary phases, achieved a Mean Absolute Error (MAE) of <73 RI units (SSNP: 16.5–29.5, SNP: 38.5–45.9, SP: 46.52–72.53).
16 mar 2018 · the standard errors of the model parameter estimates may not be trustworthy for some parameters due to a non-positive definite first-order derivative product matrix.....this is most likely due to having more parameters than the sample size.
11 mar 2019 · Two metrics commonly used to measure goodness-of-fit include R-squared (R2) and the standard error of the regression, often denoted S. This tutorial explains how to interpret the standard error of the regression (S) as well as why it may provide more useful information than R2.
15 lip 2020 · The aim of this work is to provide the first systematic comparison of different approaches for RI similarity score, to select the best way to take RI into account during GC-MS library search, and to investigate how the accuracy of the reference RI affects the probability of correct identification.
The standard error (SE) [1] of a statistic (usually an estimate of a parameter) is the standard deviation of its sampling distribution [2] or an estimate of that standard deviation. If the statistic is the sample mean, it is called the standard error of the mean ( SEM ). [ 1 ]
