Development of the Concept of Uncertainty in Measurement and Revision of Guide to the Expression of Uncertainty in Measurement. Part 1. Reasons and Probability-Theoretical Bases of the Revision

Efremova, N. Yu.; Чуновкина, А. Г.

doi:10.1007/s11018-017-1195-2

Cited by 9 publications

(3 citation statements)

References 4 publications

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“…The standard uncertainties , of experimental VLE data were calculated by the undermentioned equations where P represents the total pressure of the system, n represents the number of experimental data points, x i and y i represent the mole fractions of component i in the liquid phase and vapor phase, respectively, and x̅ (or y̅ ) represents the average value of repeated measurements for the same point.…”

Section: Results and Discussionmentioning

confidence: 99%

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Study on the Isobaric Vapor–Liquid Equilibrium Behavior of the Methanol + Methyl Ethyl Ketone System Using Ionic Liquids as Extractants and Model Correlation

Yin

Zhang

et al. 2022

J. Chem. Eng. Data

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In this work, two ionic liquids (ILs), 1-ethyl-3-methylimidazolium bromide ([EMIM][Br]) and 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM][DEP]), were used to separate the mixture of methanol and methyl ethyl ketone. Isobaric vapor–liquid equilibrium data for the binary system of methanol + methyl ethyl ketone and the ternary systems of methanol + methyl ethyl ketone + [EMIM][Br] and methanol + methyl ethyl ketone + [EMIM][DEP] were measured at 101.3 kPa. The results showed that the two ILs could enhance the relative volatility of methyl ethyl ketone to methanol. The more the content of ILs, the greater the relative volatility of methyl ethyl ketone to methanol. The azeotropic phenomenon of the methanol + methyl ethyl ketone system could be eliminated as the content of ILs reached a specific value. The order of separation ability of the two ILs is [EMIM][DEP] > [EMIM][Br]. Finally, the activity coefficient models including the NRTL model and the UNIFAC-Lei model were used to correlate the experimental vapor–liquid equilibrium data, and the correlated results showed that the NRTL model was more suitable to correlate the experimental data.

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Section: Results and Discussionmentioning

confidence: 99%

“…The standard uncertainties 39,40 of experimental VLE data were calculated by the undermentioned equations…”

Section: Resultsmentioning

confidence: 99%

Study on the Isobaric Vapor–Liquid Equilibrium Behavior of the Methanol + Methyl Ethyl Ketone System Using Ionic Liquids as Extractants and Model Correlation

Yin

Zhang

et al. 2022

J. Chem. Eng. Data

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“…The uncertainty of the spectrally integrated radiant intensity in the non-absorption band existed across three aspects: the measurement instrument, the object, and the conditions [22][23][24].…”

Section: Uncertainty Analysismentioning

confidence: 99%

Correction of Spatial Nonuniformity in Spectroradiometer Field-of-View Using a Concentric-Circles Method

Jiao

Chen

et al. 2022

Photonics

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Spectroradiometers exhibit the smallest aberration and the optimum response at the field-of-view (FOV) center. The aberration increases and the response deteriorates at positions further away from the FOV center, which leads to nonuniformity in the spectroradiometer FOV. In this study, a concentric-circles method for correcting the spectroradiometer FOV nonuniformity was developed. The calibration experiment for FOV nonuniformity was conducted by establishing the experimental platform. The nonuniformity correction coefficients were obtained and then used to fit the correction function curve within the whole FOV, allowing for correction of measurement targets with an arbitrary shape. The radiation intensity of the blackbody at different temperatures was obtained by measurement, and the nonuniformity coefficient was used to correct it. After correction, the error was within 1.84% for the spectrally integrated radiant intensity in the non-absorption band. Using this correction method, efficient calibration of spectroradiometer nonuniformity can be achieved, thereby enhancing the measurement accuracy of the spectroradiometer.

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Development of the Concept of Uncertainty in Measurement and Revision of the Guide to the Expression of Uncertainty in Measurement. Part 2. Comparative Analysis of Basic Provisions of the Guide and Their Planned Changes

Efremova

Чуновкина

2017

Meas Tech

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Development of the Concept of Uncertainty in Measurement and Revision of Guide to the Expression of Uncertainty in Measurement. Part 1. Reasons and Probability-Theoretical Bases of the Revision

Cited by 9 publications

References 4 publications

Study on the Isobaric Vapor–Liquid Equilibrium Behavior of the Methanol + Methyl Ethyl Ketone System Using Ionic Liquids as Extractants and Model Correlation

Study on the Isobaric Vapor–Liquid Equilibrium Behavior of the Methanol + Methyl Ethyl Ketone System Using Ionic Liquids as Extractants and Model Correlation

Correction of Spatial Nonuniformity in Spectroradiometer Field-of-View Using a Concentric-Circles Method

Development of the Concept of Uncertainty in Measurement and Revision of the Guide to the Expression of Uncertainty in Measurement. Part 2. Comparative Analysis of Basic Provisions of the Guide and Their Planned Changes

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