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  • Author or Editor: A. Labrada x
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Abstract  

X-ray analysis can be used to determine the quality of seeds, showing the cause of bad germination. X-ray images provide information on the internal structure and morphology of seeds, mechanical damage, percentage of empty and filled seeds, microfractures, possible embryo deformations and insect infestation. These techniques has been developed in Cuba for different X-ray sets. In this article we describe the suitable working conditions for 32 agricultural and forestry species. We also explained the main damages to seeds and their consequences for germination. If affected by insects, it could reduce the storage ability of grains.

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Abstract  

The moisture measurement of filter press mud was made by -transmission method in the range of interest for the industry (60–85%). A 32 mCi activity137Cs source was used. The method satisfies the requirements of industry.

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Abstract  

Five types of Cuban concretes and their main components (mineral aggregates and cements) were analyzed for uranium, thorium, radium, potassium and radon (220Rn,222Rn) using -spectroscopy, track registration methods and neutron activation analysis. Comparative evaluation of different concretes, aggregates and two types of cements concerning their natural radioactivity is presented.

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