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- W432880962 abstract "The total protein in grain is an important measure of its nutritional value. In Canada, more than one million protein analyses are done annually, mostly by the traditional Kjeldahl chemical method. We have developed a new technique for protein (nitrogen) measurement, employing proton activation analysis. A beam of 16 MeV protons incident on the sample produces radioactive 140 nuclei through the 14N(p, n) 140 reaction. The 140 decay (t1/2=71 sec.) is detected off-line by its characteristic 2.31 MeV γ-ray. The proton flux is determined by the beam current collected in the sample. This gives an unambiguous measure of the abundance of nitrogen. The accuracy is comparable to the Kjeldahl method. Both whole grain and ground samples may be analysed. Weighing of samples is unnecessary since its effective thickness is determined by the proton range. A mechanized system for sample handling, necessary to handle the large number of samples, is under construction. The system, which will be controlled by the laboratory PDP15/40 computer is designed to process from 4 to 10 samples per minute." @default.
- W432880962 created "2016-06-24" @default.
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- W432880962 date "1975-01-01" @default.
- W432880962 modified "2023-09-23" @default.
- W432880962 title "Analysis of Protein Content in Grain by Proton Activation" @default.
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- W432880962 doi "https://doi.org/10.1007/978-3-0348-5520-4_107" @default.
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