<?xml version="1.0"?><rdf:RDF xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:edm="http://www.europeana.eu/schemas/edm/" xmlns:wgs84_pos="http://www.w3.org/2003/01/geo/wgs84_pos" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdaGr2="http://rdvocab.info/ElementsGr2" xmlns:oai="http://www.openarchives.org/OAI/2.0/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:ore="http://www.openarchives.org/ore/terms/" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:dcterms="http://purl.org/dc/terms/"><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:DOC-U1BRI8QE/1b83b393-8872-427d-990e-e580160d8382/PDF"><dcterms:extent>1721 KB</dcterms:extent></edm:WebResource><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:DOC-U1BRI8QE/14df5e8f-ce6d-42ec-95ba-847633532d8c/TEXT"><dcterms:extent>0 KB</dcterms:extent></edm:WebResource><edm:ProvidedCHO rdf:about="URN:NBN:SI:DOC-U1BRI8QE"><dcterms:issued>2026</dcterms:issued><dc:creator>Bih, Francis Kofi</dc:creator><dc:creator>Chakurah, Issah</dc:creator><dc:creator>Wongara Ibrahim, Bashiru</dc:creator><dc:format xml:lang="sl">številka:139</dc:format><dc:format xml:lang="sl">str. 37-47</dc:format><dc:identifier>DOI:10.20315/ASetL.139.3</dc:identifier><dc:identifier>ISSN:2335-3112</dc:identifier><dc:identifier>COBISSID_HOST:282270211</dc:identifier><dc:identifier>URN:URN:NBN:SI:doc-U1BRI8QE</dc:identifier><dc:language>sl</dc:language><dc:publisher xml:lang="sl">Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire</dc:publisher><dc:publisher xml:lang="sl">Biotehniška fakulteta, Oddelek za lesarstvo</dc:publisher><dc:publisher xml:lang="sl">Gozdarski inštitut Slovenije, založba Silva Slovenica</dc:publisher><dc:source xml:lang="sl">Acta silvae et ligni</dc:source><dc:subject xml:lang="en">dimensional stability</dc:subject><dc:subject xml:lang="sl">dimenzijska stabilnost</dc:subject><dc:subject xml:lang="sl">izraba lesa</dc:subject><dc:subject xml:lang="sl">lastnosti lesa</dc:subject><dc:subject xml:lang="en">mechanical properties</dc:subject><dc:subject xml:lang="sl">mehanske lastnosti</dc:subject><dc:subject xml:lang="sl">območje savane</dc:subject><dc:subject xml:lang="en">position-based grading</dc:subject><dc:subject xml:lang="sl">Pseudocedrela kotschyi</dc:subject><dc:subject xml:lang="sl">razvrščanje na podlagi položaja</dc:subject><dc:subject xml:lang="en">savannah zone</dc:subject><dc:subject xml:lang="en">timber utilization</dc:subject><dc:subject xml:lang="en">tropical hardwood</dc:subject><dc:subject xml:lang="sl">tropski trdi les</dc:subject><dc:subject xml:lang="en">vertical variation</dc:subject><dc:subject xml:lang="sl">vertikalne variacije</dc:subject><dc:subject xml:lang="en">wood properties</dc:subject><dc:title xml:lang="sl">Assessment of the physical and mechanical properties of Pseudocedrela kotschyi wood from Ghana's savannah zone| vertical variation and utilization implications| Ocena fizikalnih in mehanskih lastnosti lesa Pseudocedrela kotschyi iz območja savane v Gani| vertikalne spremembe in pomen za njegovo uporabo|</dc:title><dc:description xml:lang="sl">This study assessed the physical and mechanical properties of Pseudocedrela kotschyi wood from Ghana's Savannah zone using three mature trees from Jeyiri in the Wa East District. Specimens from the bottom, middle, and top stem sections were tested following BS 373 (1957) protocols. The results revealed significant vertical gradients in wood properties: moisture content increased with height from 44.5% to 49.54% (p = 0.001), while density also decreased from 747.92 kg/m3 to 705.63 kg/m3 (p = 0.042). Dimensional stability deteriorated upward, with volumetric shrinkage rising from 9.48% to 12.46% (p = 0.005) and volumetric swelling increasing from 10.09% to 15.41% (p = 0.003). All mechanical properties declined with height: the modulus of elasticity decreased from 4,801 to 4,077 MPa, the modulus of rupture from 24.26 to 19.95 MPa, compression strength from 37.82 to 33.96 MPa, and shear strength from 16.62 to 13.08 MPa. Overall, P. kotschyi exhibits medium-density hardwood characteristics and requires position-based utilization and grading strategies</dc:description><dc:description xml:lang="sl">V tej študiji so ocenili fizikalne in mehanske lastnosti lesa Pseudocedrela kotschyi iz območja Savannah v Gani z uporabo treh odraslih dreves iz Jeyirija v okrožju Wa East. Vzorci iz spodnjega, srednjega in zgornjega dela debla so bili testirani po protokolih BS 373 (1957). Rezultati so pokazali znatne vertikalne gradiente v lastnostih lesa: vsebnost vlage se je z višino povečala s 44,5 % na 49,54 % (p = 0,001), medtem ko se je gostota zmanjšala s 747,92 kg/m3 na 705,63 kg/m3 (p = 0,042). Dimenzijska stabilnost se je poslabšala navzgor, pri čemer se je volumetrično krčenje povečalo z 9,48 % na 12,46 % (p = 0,005), volumetrično nabrekanje pa z 10,09 % na 15,41 % (p = 0,003). Vse mehanske lastnosti so se z višino zmanjševale: modul elastičnosti se je zmanjšal s 4801 na 4077 MPa, modul lomnosti s 24,26 na 19,95 MPa, tlačna trdnost s 37,82 na 33,96 MPa in strižna trdnost s 16,62 na 13,08 MPa. Na splošno ima P. kotschyi značilnosti trdega lesa srednje gostote in zahteva strategije izrabe in razvrščanja na podlagi položaja</dc:description><edm:type>TEXT</edm:type><dc:type xml:lang="sl">znanstveno časopisje</dc:type><dc:type xml:lang="en">journals</dc:type><dc:type rdf:resource="http://www.wikidata.org/entity/Q361785" /></edm:ProvidedCHO><ore:Aggregation rdf:about="http://www.dlib.si/?URN=URN:NBN:SI:DOC-U1BRI8QE"><edm:aggregatedCHO rdf:resource="URN:NBN:SI:DOC-U1BRI8QE" /><edm:isShownBy rdf:resource="http://www.dlib.si/stream/URN:NBN:SI:DOC-U1BRI8QE/1b83b393-8872-427d-990e-e580160d8382/PDF" /><edm:rights rdf:resource="http://creativecommons.org/licenses/by-sa/4.0/" /><edm:provider>Slovenian National E-content Aggregator</edm:provider><edm:intermediateProvider xml:lang="en">National and University Library of Slovenia</edm:intermediateProvider><edm:dataProvider xml:lang="sl">Gozdarski inštitut Slovenije</edm:dataProvider><edm:object rdf:resource="http://www.dlib.si/streamdb/URN:NBN:SI:DOC-U1BRI8QE/maxi/edm" /><edm:isShownAt rdf:resource="http://www.dlib.si/details/URN:NBN:SI:DOC-U1BRI8QE" /></ore:Aggregation></rdf:RDF>