SENSING MOISTURE CONTENT OF PECANS BY RF IMPEDANCE AND MICROWAVE RESONATOR MEASUREMENTS

1992 ◽  
Vol 35 (2) ◽  
pp. 617-623 ◽  
Author(s):  
S. O. Nelson ◽  
K. C. Lawrence ◽  
A. W. Kraszewski
Keyword(s):  
Moisture Content ◽  
Microwave Resonator

Moisture Content Determination in Single Peanut Kernels With a Microwave Resonator

1993 ◽  
Vol 20 (1) ◽  
pp. 27-31 ◽  
Author(s):  
A. W. Kraszewski ◽  
S. O. Nelson
Keyword(s):  
Moisture Content ◽  
Microwave Resonator ◽  
Peanut Kernel ◽  
Cavity Transmission ◽  
Percent Confidence Level ◽  
Arachis Hypogaea L ◽  
Percent Moisture ◽  
Mass Size ◽  
Two Parameters ◽  
Moisture Content Determination

Abstract Principles are discussed for determining moisture content of individual peanut, Arachis hypogaea L., kernels by microwave resonator measurements, and data illustrating the application of these principles are presented. By measuring the shift in the resonant frequency and the change in the cavity transmission characteristics when a peanut kernel is inserted into the cavity, and taking the ratio of these two parameters, it is possible to obtain the moisture content of the kernel independent of its mass (size) and apparently independent of peanut type, as far as runner and virginia market types are concerned. Moisture contents in the range from 4 to 14 percent, wet basis, were determined with an uncertainty of 0.9 percent moisture, at the 95-percent confidence level.

Microwave Resonator Techniques for Sorting Dielectric Objects

1990 ◽  
Vol 189 ◽  
Author(s):  
Andrzej W. Kraszewski ◽  
Stuart O. Nelson
Keyword(s):  
Moisture Content ◽  
Experimental Results ◽  
Microwave Resonator ◽  
Microwave Resonators ◽  
Similar Shape ◽  
Irregular Shapes ◽  
Dielectric Objects

ABSTRACTMicrowave resonators have been found to be sensitive devices for sorting dielectric objects of irregular shapes according to their volumes, for detecting voids inside objects of similar shape or for determining moisture content in objects of varying volumes. Fundamental principles of operation as well as experimental results are discussed in the paper.

Preparation and Standardization of a Stable AHF Plasma

1968 ◽  
Vol 19 (03/04) ◽  
pp. 423-429 ◽  
Author(s):  
G. M Thelin ◽  
Keyword(s):  
Moisture Content ◽  
Primary Standard ◽  
Healthy Male ◽  
Healthy Donors ◽  
Fresh Plasma

SummaryA stable, lyophilized AHF reference plasma has been prepared from pooled plasma from at least 50 normal healthy donors and standardized against a primary standard of fresh plasma from 20 healthy male donors aged 20 to 40. Average AHF potency of a typical lot is 98.8%, and moisture content is less than 0.5%. Under storage at -25° C, this AHF reference plasma is stable for at least 18 months. It has been used in several major coagulation laboratories, and has given consistently satisfactory and reproducible results in AHF assays.

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