1. Addressing climate challenges through the valorisation of calamity wood in the alps-adriatic regionMiha Humar, Eli Keržič, Boštjan Lesar, Jožica Gričar, Bernard Likar, Elisa Beltramini, Stefania Silvestri, 2025, published scientific conference contribution abstract Abstract: The WoodInnovate project addresses pressing challenges facing the forest-wood value chain in the Alps-Adriatic region, which are intensifying due to climate change. Rising temperatures and frequent natural disasters are degrading wood quality and increasing pest outbreaks, particularly from bark beetles. These environmental shifts jeopardize forest ecosystems, reduce the economic viability of timber harvesting, and compromise regional sustainability. WoodInnovate aims to assess and enhance the utilization of storm- and pest-damaged wood through advanced modification techniques, innovative product design, and strategic cross-border collaboration. The project explores climate-resilient tree species and determines optimal uses for lower-grade wood. Stakeholder involvement is essential, including academic institutions, forestry clusters, and industry partners from Italy and Slovenia. Activities include pilot tests, prototype development, knowledge transfer, and regional workshops. The ultimate goal is to transform wood waste from environmental catastrophes into valuable resources, fostering a circular economy and reinforcing forest resilience. The project contributes to climate adaptation strategies while promoting economic revitalization through sustainable material innovation. By enabling cross-sector collaboration, WoodInnovate not only strengthens the forest-wood value chain but also supports EU green objectives, making wood from damaged trees a tool for environmental and social progress.
Keywords: climate change, damaged wood, sustainable forest management, innovative wood utilization, cross-border cooperation
Published in DiRROS: 21.01.2026; Views: 353; Downloads: 218
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2. Precipitacija v vodi netopnih bakrovih soli v lesu kot zaščita pred glivami razkrojevalkami lesaJaka Levanič, Jure Švikart, Eli Keržič, Miha Humar, 2025, original scientific article Abstract: V raziskavi predstavljamo metodo zaščite lesa pred glivnim razkrojem s precipitacijo netopnih bakrovih soli v lumnih lesnih celic z uporabo dvostopenjske impregnacije s topnim bakrovim sulfatom in fiksativom, natrijevim karbonatom. Fiksacija z natrijevim karbonatom se je izkazala kot učinkovita metoda za zmanjšanje izpiranja bakra iz vzorcev. Naravna kapaciteta zadrževanja bakra v beljavi bora je okoli 2000 ppm, kar smo določili z izpiranjem po metodi SIST EN 84. S fiksacijo smo uspešno zadržali v povprečju več kot 5000 ppm bakra v vzorcih in praktično preprečili izpiranje bakra iz vzorcev, impregniranih z 0,5-odstotno raztopino bakrovega sulfata (0,5 % ustreza koncentraciji bakrovih ionov v raztopini). Kljub zadostni koncentraci- ji se je pokazalo, da precipitirana oblika bakrovega karbonata v lesu ne deluje kot učinkovit fungicid, kar je verjetno posledica izjemno slabe topnosti v vodi, ki znaša < 0,005 g/L v sobnih razmerah. Izgube mase po testu SIST EN 113-1 kažejo na slabo zaščito pred gobo Coniophora puteana, vendar na zadovoljivo zaščito pred gobo Gloeophyllum trabeum.
Keywords: zaščita lesa, bakrovi biocidi, fiksacija bakra, glivni razkroj
Published in DiRROS: 17.12.2025; Views: 777; Downloads: 416
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3. “Paste test” – a method for evaluating the fungal inhibition potential of ground wood samplesEli Keržič, Miha Humar, 2025, original scientific article Abstract: As part of the »ULTRA – University of Ljubljana for a Sustainable Society« project, a new test method was introduced into the curriculum to provide insight into key properties that affect wood durability. This study aimed to adapt and verify the “paste test”, which uses wood dust in nutrient media to assess the inhibitory effect of wood components on fungal growth. The method was adapted to match the available laboratory equipment and simplified for educational use by students at the Department of Wood Science and Technology (Biotechnical Faculty, University of Ljubljana, Slovenia). The study involved testing fungal growth on nutrient media supplemented with spruce wood dust, with the goal of evaluating different grinding methods, nutrient media, and data analysis. Potato dextrose agar nutrient media was confirmed as a suitable alternative to malt extract agar. The wood dust fraction size had no significant effect on fungal inhibition, enabling the use of coarser, less time-saving grinding methods. Image analysis and logistic growth modelling were conducted using freely available software (ImageJ and R-Commander), which proved to be effective alternatives to proprietary tools. Visualization of growth using logistic growth rates offered a clearer comparative analysis, despite some loss of dynamic growth information.
Keywords: inhibition, wood chemistry, nutrient media, white rot fungi, brown rot fungi, logistic growth rate
Published in DiRROS: 15.07.2025; Views: 985; Downloads: 531
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4. Biorafinerijski potencial manjvrednega lesa rdečega bora (Pinus sylvestris L.) in robinije (Robinia pseudoacacia L.) za pridobivanje naravnih bioaktivnih učinkovin za zaščito lesaViljem Vek, Ida Poljanšek, Urša Osolnik, Peter Hrovatič, Angela Balzano, Miha Humar, Primož Oven, 2025, review article Abstract: S prispevkom želimo predstaviti glavne rezultate in povzetek znanstvenih dognanj, do katerih smo prišli z dvema nacionalnima podoktorskima projektoma ob podpori takratnega Ministrstva za izobraževanje, znanost in šport Republike Slovenije (MIZŠ) ter Javne agencije za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije (ARIS). Analizirali smo biorafinerijski potencial manjvrednega lesa rdečega bora (Pinus sylvestris L.) in robinije (Robinia pseudoacacia L.) za ekstrakcijo naravnih bioaktivnih spojin. Les grč in jedrovine smo uporabili kot biomaso za ekstrakcijo polifenolnih ekstraktivov, ki smo jih nato uporabili v naravno osnovanih pripravkih za zaščito lesa. Rezultati so pokazali, da hidrofilni ekstraktivi grč bora in jedrovine robinije zavirajo glivni razkroj lesa in imajo velik potencial kot biocidne komponente in antioksidanti v naravno osnovanih zaščitnih pripravkih. Nadaljnje raziskave antioksidativnih in protiglivnih lastnosti ekstraktivov lesa in skorje so v teku.
Keywords: robinija, rdeči bor, grče, les, manjvredna drevesna biomasa, ekstrakcija, polifenoli, naravni fungicidi in antioksidanti, biorafinerija, krožno biogospodarstvo
Published in DiRROS: 04.07.2025; Views: 1138; Downloads: 767
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5. Leseni daljnovodni drogovi – analiza vzrokov za prezgodnji razkroj na območju SlovenijeMiha Humar, Boštjan Lesar, Nace Kregar, Simon Drnovšek, 2025, original scientific article Abstract: Študija se osredotoča na analizo vzrokov za prezgodnji propad lesenih daljnovodnih drogov v severovzhodni Sloveniji, kjer je bilo zabeleženih več primerov hitrega glivnega razkroja drogov, kljub načrtovani življenjski dobi 30 do 50 let. Drogovi so bili izdelani iz lesa rdečega bora in impregnirani z baker-etanolaminskim biocidnim proizvodom. Namen raziskave je bil oceniti stanje stoječih drogov in preučiti ključne vzroke za njihovo prezgodnjo degradacijo na primeru dveh podrtih drogov. Uporabljene metode vključujejo uporabo rezistografa za določanje razkrojenosti lesa po preseku, izolacija izvrtkov za določanje penetracije in retencije. Poleg tega je bila opravljena mikroskopska in hiperspektralna analiza na vzorcih lesa za natančno karakterizacijo razkroja. Rezultati so pokazali, da je bila impregnacija lesa večinoma nezadostna, kar je vodilo v razširjen razkroj, zlasti na območjih, kjer je v les prodrlo premalo biocidnega proizvoda oziroma ni bila prepojena celotna beljava borovih drogov. Pospešen propad drogov je posledica delovanja gliv rjave trohnobe. Raziskava poudarja potrebo po izboljšani impregnaciji in rednem nadzoru drogov za zagotavljanje njihove življenjske dobe in s tem povezano zanesljivostjo oskrbe z električno energijo.
Keywords: daljnovodni drogovi, impregnacija, bakrovi biocidni proizvodi, glivni razkroj, rezistograf, penetracija, retencija
Published in DiRROS: 04.07.2025; Views: 1080; Downloads: 577
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6. Naslavljanje podnebnih izzivov preko valorizacije lesa poškodovanega v ujmah v Alpsko-Jadranski regijiEli Keržič, Boštjan Lesar, Jožica Gričar, Polona Hafner, Bernard Likar, Elisa Beltramini, Carlo Piemonto, Stefania Silvestri, Miha Humar, 2025, published scientific conference contribution abstract Keywords: podnebne spremembe, poškodovan les, trajnostno gospodarjenje z gozdovi, inovativna raba lesa
Published in DiRROS: 05.06.2025; Views: 867; Downloads: 379
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7. Avtomatizacija pelodne analize slovenskega medu z uporabo umetne inteligenceLana Nastja Anžur, Martin Jurkovič, Adrian Mladenić Grobelnik, Jaka Godejša, Živa Alif, Miha Humar, Ivan Bratko, 2025, published scientific conference contribution abstract Keywords: pelodna analiza, umetna inteligenca, slovenski med, melisopalinologija
Published in DiRROS: 05.06.2025; Views: 824; Downloads: 0 |
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10. Dataset for the article Enhancing the fire resistance and fungal durability of solid wood via magnesium carbonate-based mineralization methodAndreja Pondelak, Nataša Knez, Srečo D. Škapin, Miha Humar, Andrijana Sever Škapin, 2025, complete scientific database of research data Abstract: The dataset supports the data in the tables and figures in the scientific article Enhancing the fire resistance and fungal durability of solid wood via magnesium carbonate-based mineralization method (doi: https://doi.org/10.1016/j.conbuildmat.2026.146355). It contains original data of thermo-gravimetric analysis (TGA) and differential thermal analysis (DTA) coupled with a mass spectrometer (MS), equilibrium moisture content (EMC), pH values, cone calorimetry data and fungal durability test according to EN 113-1 (2021).
Published in DiRROS: 15.05.2025; Views: 40; Downloads: 13
 Research data (189,06 KB) |
