1501. Osutost doba (Quercus robur L.) na trajnih raziskovalnih ploskvah v obdobju 1995-2000Matjaž Čater, 2001, original scientific article Keywords: gozd, hrast dob, Qurcus robur L., propadanje gozda, propadanje hrasta, trajna raziskovalna ploskev, osutost drevja, Slovenija
Published in DiRROS: 12.07.2017; Views: 4457; Downloads: 1871
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1504. Translokacija bakra iz zaščitenega lesa, izpostavljenega glivam razkrojevalkam lesaMiha Humar, Franc Pohleven, Polona Kalan, Sam Amartey, 2002, original scientific article Abstract: Na področju zaščite lesa se v zadnjem času pojavljajo na baker odporni sevi gliv, kar v praksi predstavlja velik problem. Tolerantne glive ogrožajo zaščiten les v uporabi z običajno trajnostjo nad 30 let, saj les okužen s tolerantnimi sevi gliv lahko propade že v nekaj letih. Mehanizmi tolerantnosti še niso povsem pojasneni. Velik pomen se pripisuje oksalni kislini, ki jo intenzivno tvorijo tolerantne glive. Z laboratorijskimi poskusismo ugotovili, da je poleg tega mehanizma pomemben tudi aktivni transport bakra v micelij gliv. Pri glivah, ki ne izločajo oksalne kisline, jetranslokacija bakra povzročena z difuzijo
Keywords: zaščita lesa, tolerantnost na baker, oksalna kislina, Antrodia vaillantii
Published in DiRROS: 12.07.2017; Views: 4611; Downloads: 1930
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1505. Influence of drying temperature on properties of wood surfacesMilan Šernek, 2002, original scientific article Abstract: This article deals with modifications of wood surface properties induced by different drying temperatures. The aim of the study was chemical and physical characterization of a wood surface concerning low and high temperature exposure. Additionally, the correlation between the chemical composition of a wood surface and its wetting capacity were investigated. X-ray photoelectron spectroscopy and contact angle measurements were conducted. Two wood species, yellow poplar (Liriodendron tulipifera) and southern pine (Pinus taeda) were studied. The results showed that the percentage of carbon increased with drying temperature, and consequently, the percentage of oxygen decreased. The samples exposed to high drying temperatures indicated a higher content of extractives on the wood surface. These samples exhibited the highest contact angle and the lowest wettability
Keywords: površina lesa, sušenje, kontaktni kot, rentgenska fotoelektronska spektroskopija, omočitev, ekstraktivne snovi, wood surface, drying, contact angle, XPS, wettability, extractives
Published in DiRROS: 12.07.2017; Views: 4626; Downloads: 1930
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1510. Asociaciji Seslerio kalnikensis-Jovibarbetum hirtae ass.nov. in Seslerio calcariae-Jovibarbetum hirtae ass. nov. v SlovenijiMarko Accetto, 2002, original scientific article Keywords: botanika, fitocenologija, Kolpska dolina, sistematika, Kočevska, Slovenija, Gorjanci, Dolina Gračnice, Planina
Published in DiRROS: 12.07.2017; Views: 4315; Downloads: 1917
Full text (1,30 MB) |
