{"?xml":{"@version":"1.0"},"edm: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"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-U1BRI8QE/14df5e8f-ce6d-42ec-95ba-847633532d8c/TEXT","dcterms:extent":"0 KB"}],"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:doc-U1BRI8QE","dcterms:issued":"2026","dc:creator":["Bih, Francis Kofi","Chakurah, Issah","Wongara Ibrahim, Bashiru"],"dc:format":[{"@xml:lang":"sl","#text":"številka:139"},{"@xml:lang":"sl","#text":"str. 37-47"}],"dc:identifier":["DOI:10.20315/ASetL.139.3","ISSN:2335-3112","COBISSID_HOST:282270211","URN:URN:NBN:SI:doc-U1BRI8QE"],"dc:language":"sl","dc:publisher":[{"@xml:lang":"sl","#text":"Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire"},{"@xml:lang":"sl","#text":"Biotehniška fakulteta, Oddelek za lesarstvo"},{"@xml:lang":"sl","#text":"Gozdarski inštitut Slovenije, založba Silva Slovenica"}],"dc:source":{"@xml:lang":"sl","#text":"Acta silvae et ligni"},"dc:subject":[{"@xml:lang":"en","#text":"dimensional stability"},{"@xml:lang":"sl","#text":"dimenzijska stabilnost"},{"@xml:lang":"sl","#text":"izraba lesa"},{"@xml:lang":"sl","#text":"lastnosti lesa"},{"@xml:lang":"en","#text":"mechanical properties"},{"@xml:lang":"sl","#text":"mehanske lastnosti"},{"@xml:lang":"sl","#text":"območje savane"},{"@xml:lang":"en","#text":"position-based grading"},{"@xml:lang":"sl","#text":"Pseudocedrela kotschyi"},{"@xml:lang":"sl","#text":"razvrščanje na podlagi položaja"},{"@xml:lang":"en","#text":"savannah zone"},{"@xml:lang":"en","#text":"timber utilization"},{"@xml:lang":"en","#text":"tropical hardwood"},{"@xml:lang":"sl","#text":"tropski trdi les"},{"@xml:lang":"en","#text":"vertical variation"},{"@xml:lang":"sl","#text":"vertikalne variacije"},{"@xml:lang":"en","#text":"wood properties"}],"dc:title":{"@xml:lang":"sl","#text":"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:description":[{"@xml:lang":"sl","#text":"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"},{"@xml:lang":"sl","#text":"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"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"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:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Gozdarski inštitut Slovenije"},"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"}}}}