Freeze-dried meningococcal vaccine: Total error assessment of a near-infrared method for water content determination

Talanta ◽  
2020 ◽  
Vol 211 ◽  
pp. 120659 ◽  
Author(s):  
Ana Mandac Zubak ◽  
Ana Horvat ◽  
Dražen Čavužić ◽  
Ines Fabijanić
Keyword(s):  
Water Content ◽  
Near Infrared ◽  
Total Error ◽  
Error Assessment ◽  
Meningococcal Vaccine ◽  
Content Determination ◽  
Freeze Dried ◽  
Infrared Method

Towards a robust water content determination of freeze-dried samples by near-infrared spectroscopy

2010 ◽  
Vol 676 (1-2) ◽  
pp. 34-40 ◽  
Author(s):  
Holger Grohganz ◽  
Delphine Gildemyn ◽  
Erik Skibsted ◽  
James M. Flink ◽  
Jukka Rantanen
Keyword(s):  
Infrared Spectroscopy ◽  
Water Content ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Content Determination ◽  
Freeze Dried

scholarly journals Granule Characterization During Fluid Bed Drying by Development of a Near Infrared Method to Determine Water Content and Median Granule Size

2007 ◽  
Vol 24 (10) ◽  
pp. 1854-1861 ◽  
Author(s):  
Florentine J. S. Nieuwmeyer ◽  
Michiel Damen ◽  
Ad Gerich ◽  
Federica Rusmini ◽  
Kees van der Voort Maarschalk ◽  
...  
Keyword(s):  
Water Content ◽  
Near Infrared ◽  
Granule Size ◽  
Fluid Bed ◽  
Infrared Method

Water absorption thermodynamics in single wood pellets modelled by multivariate near-infrared spectroscopy

Holzforschung ◽  
2008 ◽  
Vol 62 (4) ◽  
Author(s):  
Torbjörn A. Lestander
Keyword(s):  
Water Content ◽  
Near Infrared ◽  
Calorific Value ◽  
Least Squares Regression ◽  
Wood Pellets ◽  
Differential Heat ◽  
On Line ◽  
Explained Variation ◽  
Test Sets ◽  
Content Range

Abstract Samples of wood pellets were adjusted into six water content classes from 0% to 12%. The water content in single pellets varied between 0.1% and 14.2%. Three equations were constructed to estimate the differential heat of sorption (-ΔH) values from (1) fractal-geometry, (2) isosteric, and (3) calorimetric data. The ranges in calculated -ΔH of single pellets were (1) 133–1475, (2) 315–881, and (3) 195–1188 J g-1 water, respectively, across the studied moisture content range. Partial least squares regression was used to model near-infrared (NIR) spectra from single pellets and to predict -ΔH values and water content. The explained variation in test sets for the different models ranged from 97.1% to 99.9%. The shifts in peak absorbance for two water bands indicated that frequency in overtone vibration of O-H stretching and bending decreased, when water content was raised. Simulations of mixes between pellets of differential heat values showed that released heat was up to 0.03% of the gross calorific value of wood pellets. This heat may be a major contributor to initial temperature increases in pellet stacks during storage. The results indicate that on-line NIR based predictions of differential heat in wood pellets is possible to apply in the pellet industry.

Near-Infrared Method for Analysis of Block and Random Ethylene-Propylene Copolymers.

1966 ◽  
Vol 38 (2) ◽  
pp. 217-220 ◽  
Author(s):  
R. M. Bly ◽  
P. E. Kiener ◽  
B. A. Fries
Keyword(s):  
Near Infrared ◽  
Ethylene Propylene ◽  
Infrared Method
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