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dc.contributor.authorAniszewska, Monika
dc.contributor.authorBłuszkowska, Urszula
dc.date.accessioned2017-02-02T21:39:44Z
dc.date.available2017-02-02T21:39:44Z
dc.date.issued2016-09-15
dc.identifier.otherDOI 10.1515/frp-2016-0024
dc.identifier.urihttps://depot.ceon.pl/handle/123456789/11410
dc.description.abstractThis study aimed at determining the shape of closed silver fir cones from the Jawor Forest District (Wroclaw), based purely on measurements of their length and thickness. Using these two parameters, the most accurate estimations were achieved with a fourth-degree polynomial fitting function. We then calculated the cones’ surface area and volume in three different ways: 1) Using the fourth-degree polynomial shape estimation, 2) Introducing indicators of compliance (k1, k2, k3) to calculate the volume and then comparing it to its actual value as measured in a pitcher filled with water, 3) Comparing the surface area of the cones as calculated with the polynomial function to the value obtained from ratios of indicators of compliance (ratios k4 and k5).We found that the calculated surface area and volume were substantially higher than the corresponding measured values. Test values of cone volume and surface area as calculated by our model were 8% and 5% lower, respectively, compared to direct measurements. We also determined the fir cones apparent density to be 0.8 g·cm-3on average. The gathered data on cone surface area, volume and bulk density is a valuable tool for optimizing the thermal peeling process in mill cabinets to acquire high quality seeds.pl_PL
dc.language.isoenpl_PL
dc.publisherForest Research Institute, Sekocin Stary, Polandpl_PL
dc.rightsCreative Commons Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/pl/legalcode
dc.subjectshapepl_PL
dc.subjectvolumepl_PL
dc.subjectareapl_PL
dc.subjectscalespl_PL
dc.subjectconepl_PL
dc.titleVariability of silver fir (Abies alba Mill.) cones – variability of cone parameterspl_PL
dc.typeinfo:eu-repo/semantics/articlepl_PL
dc.contributor.organizationWarsaw University of Life Sciences – SGGW, Faculty of Production Engineering, Department of Agricultural and Forestry Machinerypl_PL
dc.description.epersonPrzemysław Szmit
dc.rights.DELETETHISFIELDinfo:eu-repo/semantics/openAccess


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Creative Commons Uznanie autorstwa - Użycie niekomercyjne - Bez
utworów zależnych 3.0 Polska
Except where otherwise noted, this item's license is described as Creative Commons Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska