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Summary  

This research has demonstrated that the dielectric method can be used successfully for grain moisture measurements for diverse grain types over wide ranges of temperatures if the grain moisture content is below certain (grain-specific) threshold values. These high-moisture limits were estimated. Optimum temperature correction coefficients for 149 MHz moisture measurements were determined for grain samples at different moisture levels. This information should be very helpful for grain moisture meter manufacturers and for moisture meter users who need to determine grain moisture contents at temperature extremes to be able to market grain more efficiently.

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The Unified Grain Moisture Algorithm is capable of improved accuracy and allows the combination of many grain types into a single “unified calibration”. The purposes of this research were to establish processes for determining unifying parameters from the chemical and physical properties of grains. The data used in this research were obtained as part of the United States Department of Agriculture-Grain Inspection, Packers and Stockyards Administration's Annual Moisture Calibration Study. More than 5,000 grain samples were tested with a Hewlett-Packard 4291A Material/Impedance Analyzer. Temperature tests were done with a Very High Frequency prototype system at Corvinus University of Budapest. Typical chemical and physical parameters for each of the major grain types were obtained from the literature. Data were analyzed by multivariate chemometric methods. One of the most important unifying parameters (Slope) and the temperature correction coefficient were successfully modeled. The Offset and Translation unifying parameters were not modeled successfully, but these parameters can be estimated relatively easily through limited grain tests.

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Velichko, A. A. & Timirieva, S. V. , 1995. Morphoscopy and Morphometry of quartz grains from loess and buried soil layer. Geojournal. 36 . (2–3) 142–149. Timirieva S. V. Morphoscopy and

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References Altuntas , E. , Yildiz , M. ( 2007 ) Effect of moisture content on some physical and mechanical properties of faba bean (Vicia faba L.) grains . Journal of

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in commercial and industrial applications for power generation in diesels or boilers [ 4 – 6 ]. Distillers grains (DGs) are a cereal byproduct of the distillation process. It has been estimated that the world produces as much as 60 million tonnes of

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. Ballenegger R. & di Gléria J., 1962. Talaj- és trágyavizsgálati módszerek. Mező-gazdasági Kiadó. Budapest. Beuselinck, L. et al., 1998. Grain-size analysis by laser diffractometry: comparison with the sieve-pipette method. Catena

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1177 1198 Kutman, U. B., Yildiz, B. & Cakmak, I. , 2011. Improved nitrogen status enhances zinc and iron concentrations both in the whole grain and the endosperm

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Journal of Radioanalytical and Nuclear Chemistry
Authors: J. Solecki, J. Solecki, J. Solecki, J. Solecki, S. Michalik, S. Michalik, S. Michalik, and S. Michalik

Summary  

The adsorption of 85Sr on grain fractions isolated from four different types of soil was studied. The influence of pH, concentration and presence of calcium ions on the process was investigated. The adsorption process depends mainly on pH, grain size of the solidandthe type of soil. Ca2+in the system is lowering the adsorption of 85Sr.

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Abstract  

A study has been carried out to determine the levels of radioisotopes in five Canadian grains from pre-(1985) and post-Chernobyl (1986) crop years. In addition, the radioisotope levels were determined in grains from the 1988 crop year consisting of wheats, oats, barley, corn and oil seeds which included flax, sunflower and canola. The grain and oil-seed samples were ashed to reduce their volume, and the gammaemitters137Cs and40K were determined using a high-purity germanium detector and a high-purity germanium well detector. The90Sr activity measurements required further ashing of the samples followed by chemical separations and -counting of the separated daughter90Y. The results for the 1985, 1986 and 1988 crop years are discussed and compared with results from grain crops obtained during years of atmospheric bomb tests in the 1950's.

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Abstract  

Iron was diffused into aluminium along grain boundaries and studied by Mössbauer spectroscopy. The Mössbauer spectrum of the investigated sample contained one doublet with isomer shift =0.360/5/ mm s–1 /relative to -iron/ and quadrupole splitting =0.84/l/ mm s–1. These results suggest that the iron atoms in the grain boundaries of aluminium have environment very similar to that which is present in amorphous iron /III/ oxides.

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