Evaluation of Flour Particle Size Distribution by Laser Diffraction, Sieve Analysis and Near-infrared Reflectance Spectroscopy

1994 ◽  
Vol 20 (2) ◽  
pp. 183-190 ◽  
Author(s):  
G.A. Hareland
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Near Infrared ◽  
Reflectance Spectroscopy ◽  
Laser Diffraction ◽  
Sieve Analysis ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance

scholarly journals Comparison of Near-infrared Reflectance Spectroscopy and Standard Laboratory Analysis of Turf Soil Profile

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 896B-896
Author(s):  
Andree-Ann Couillard ◽  
A.J. Turgeon ◽  
J.S. Shenk ◽  
M.O. Westerhaus
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Near Infrared ◽  
Soil Characteristics ◽  
Reflectance Spectroscopy ◽  
Golf Course ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance ◽  
Wet Chemical

The ability to predict moisture and organic matter contents as well as soil particle size distribution of a golf course turf media with the use of near infrared reflectance spectroscopy (NIRS) was investigated. This study compared a new quick test, NIRS, with the use of wet chemical analysis for the evaluation of different soil characteristics. Samples were taken from greens and fairways of central Pennsylvania golf courses and from two turfgrass research centers at The Pennsylvania State Univ. Fresh samples were vertically scanned by 1.27-cm increments, from 400 to 2500 nm, with a near infrared monochromator. Moisture and organic matter contents were evaluated in the laboratory. The pipette method was used to determine the particle size distribution. Correlations of 84% and higher were obtained for the sand, silt, and clay values as well as for the moisture and organic matter contents. NIRS analysis of soil characteristics could become a convenient, rapid, and inexpensive alternative to wet chemical analysis for golf course management.

Factors Influencing the Robustness and Accuracy of Near Infrared Reflectance Spectroscopy (NIRS) Calibrations for Ps5edicting the Digestibility of Grass Silages

1993 ◽  
Vol 1993 ◽  
pp. 50-50
Author(s):  
C W Baker ◽  
D I Givens
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Size Effects ◽  
Near Infrared ◽  
Reflectance Spectroscopy ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance ◽  
Factors Influencing

Earlier studies showed the superiority of NIRS, over fibre measurements, for predicting organic matter digestibility (OMD) in vivo of grass silages. (Barber et al 1990). This system was put into routine use in ADAS in 1989 and after some initial doubts, due to the wider range of the predicted data seen, is now accepted as the best system available for routine use. However, occasional erroneous values were predicted for which there were no obvious explanations, and which resulted in occasional relatively poor repeatability. In common with all NIRS applications it was likely that the sources of the problems contributing to the errors were i) instrumental and environmental noise, ii) sample particle size effects and iii) variable moisture content of the samples. A course of investigation was undertaken with the objective of determining the effects of these on the predicted data.

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