Dickey-john

The first commercial unit was produced by Dickey-John. It contained a tungsten-halogen lamp, six interference filters, and uncooled lead sulfide (PbS) detectors, using a 0 45° geometry. That is, the light struck the sample straight on and the fight was collected at 45° to the normal. 

In the middle of the 1970s, Technicon Instruments had Dickey-John produce a filter instrument for them, named the InfraAlyzer. The first, numbered 2.5, featured dust proof optics and internal temperature control. This improved stability and ruggedness made it practical for consumers to operate. Technicon also introduced the gold plated integrating sphere. 

B) turret mounted discrete filters, single detector and rotating sample cup (Dickey-John, Anburn, IL). 

The first commercial instrument dedicated to NIR was developed by Dickey-John and presented in 1971 at the Illinois State Fair (Table 2). The technology was licensed by Technicon and introduced soon thereafter. Technicon then developed its own scanning monochromator-based instrument. This was followed by instruments from Pacific-Scientific (now FOSS-NIR Systems) and LT Industries, to name a few companies. 

Interference filter Bran Leubbe Dickey-John, Churchill Factory of L.I. (Hungary) Foss Electric General Analysis Corp. Infrared Engineering Moisture Systems Corp. Oxford Analytical, Inc. Percon GmbH Perten Trebor Industries... 

It is no coincidence, then, that several companies specializing in NIR equipment should spring up in nearby communities of Maryland over the years [12]. In fairness, Dickey-John produced the first commercial NIR filter instrument, and Technicon (now Bran + Leubbe) the first commercial scanning (grating) instrument. Available instruments and the principles of operation of each type are covered in a later chapter. However, before looking at the hardware, it is necessary to understand the theory. 

Dickey-John introduced the first commercial filter instrument in 1971 at the Illinois State Fair. Technicon first licensed the patent for their own instruments, then proceeded to produce their own design as well as a rugged scanning grating type. Pacific-Scientific (now FOSS NIRSystems) added a twist ... 

Fig. 3.1. Capacitance-type electronic moisture testers (courtesy of Dickey-john Corporation, Auburn, IL).

Dickey-John. GAC 2100 Agri. http //www.dickey-john.com/products/ag/product detail. php products id= 1999. 

Eden Prairie, MN), DICKEY-john OmegAnalyzerG (DICKEY-john Corp, Auburn, IL), Perten DA 7200 (Perten Instruments Inc., Springfield, IL), Bruker Optics/ Cog-nis QTA (Brucker Optics Inc., Billerica, MA), and an ASD LabSpec Pro (Analytical Spectral Devices Inc., Boulder, CO) for 18 amino acids. Partial least squares (PLS) and support vector machines (SVM) regression models performed significantly better than artificial neural networks (ANN). They used a calibration data set of 526 samples... 

DICKEY-john Corporate Headquarters 5200 DICKEY-john Road Auburn, IL 62615 USA TEL (217) 438-3371 Toll Free (800) 637-2952 FAX (217) 438-6012 Filter spectrometers... 

A NIR Instalab 600-Dickey-John was used for production process control of traditional Greek feta cheese. Suitable filters were chosen to measure absorbances of moisture (at 1940 nm), fat (at 2310 nm), and protein (at 2180 nm). Samples were drawn from well-defined critical points of production and quantified with... 

SAS for Forecasting Time Series, Second Edition by John C. Brocklebank and David A. Dickey... 

Entropy and Information Optics, FrancisT. S. Yu Computational Methods for Electromagnetic and Optical Systems, John M. Jarem and Partha P. Banerjee Laser Beam Shaping, Fred M. Dickey and Scott C. Holswade Rare-Earth-Doped Fiber Lasers and Amplifiers Second Edition, Revised and Expanded, edited by Michel J. F. Digonnet Lens Design Third Edition, Revised and Expanded, Milton Laikin Handbook of Optical Engineering, edited by Daniel Malacara and Brian J. Thompson... 

Dickey, J. R. Kirk-Othmer Encyclopedia of Chemical Technology, Lubrication and Lubricants , posted online on 6/17/05 (John Wiley Sons, Inc., New York). 

St. John, M., Dickey, K., Hirabayashi, J., Huntwoik, D. (1994). An invisible infrastructure institutions of informal science education. Findings from a National Survey of Institutions of hiformal Science Education. Inverness, California, Inverness Research Associates. www.exploratorium.edu/IFI/resources/museumeducation/ invisiblefindings.htail SUMMARY. 

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