Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

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Tylek P. , Walczyk J. 2003. CRITICAL AIR VELOCITY AS A SEPARATION FEATURE IN NUTS OF EUROPEAN BEECH (FAGUS SYLVATICA L.), EJPAU 6(2), #04.
Available Online: http://www.ejpau.media.pl/volume6/issue2/forestry/abs-04.html

ABSTRACT

Stands of European beech cover around 4.1% of the total forest area in Poland. In the Carpathians the share of European beech amounts to 25.9%. Long intervals between mast seed years in beech force foresters to optimize the seed management. The separation of seeds into various quality classes is usually done with devices working on the basis of physical properties of seeds. The goal of this work was to analyze the critical velocity of beechnuts in order to determine, if the aerodynamic properties of beechnuts can be used as a basis for their separation. The other goal of this work was development of an algorithm of computer-aided image analysis.

Key words: distinctive features, critical velocity, separation, beechnuts..

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