BF, Dept. of Wood Technology, Lj. (BFLES)
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Spremljanje glivnega razkroja lesa z merjenjem porabe kisika, tvorbe CO2 ter spremembe temperature : visokošolska diplomska naloga = Monitoring of fungal decomposition of wood with measuring the consumption of oxygen, production of CO2 and change of temperature : graduation thesisČepin, JanezV raziskavi smo želeli z meritvami uvesti in preizkusiti metodo za spremljanje razkroja lesa. Na začetku je prisotnost gliv v lesu težko ugotoviti, zato smo pri represivni zaščiti lesnih izdelkov ... pogosto pred dilemo ali naj predmete represivno zaščitimo ali ne, kajti predmeti, vsaj na pogled, ne kažejo znakov okužbe. Z merjenjem porabe kisika, tvorbe ogljikovega dioksida ter sprememb temperature in vlažnosti pa bi njihovo prisotnost lahko pravočasno zaznali. Za poskus smo uporabili glivo bele trohnobe Trametes versicolor in rjave trohnobe Antrodia vaillantii. Vzorci so bili shranjeni v rastni komori. Meritve smo izvajali 7 tednov, ponavadi 4-krat na teden. Ugotovili smo naslednje: gliva T. versicolor je zaradi kompleksnejšega sistema razgradnje počasneje preraščala izpostavljen vzorec kot A. vaillantii, ki ima enostavnejši sistem razgradnje in les hitreje razkraja. Temperatura v lesnem vzorcu se spreminja podobno kot poraba kisika in je sorazmerna količini nastalega ogljikovega dioksida. Vlaga v vzorcu se je med razkrojem spreminjala sorazmerno s porabo O2 in tvorbo CO2. Vendar, ko je vlažnost dosegla 100%, porasta vlage zaradi načina merjenja nismo mogli več slediti. T. versicolor je v 27 dnevu dosegla največjo porabo O2 (2,91 mg/l/15 min), količina nastalega CO2 pa je znašala 0,473 mg/l/15 min. A. vaillantii je dosegla največjo porabo O2 (3,586 mg/l/15 min) dvaindvajsetega dne, količina nastalega CO2 pa je znašala 0,091 mg/l/15 min. Metoda za spremljanje glivne aktivnosti se je izkazala za uspešno, rezultati meritev pa kažejo, da se vrednosti parametrov spreminjajo v odvisnosti drug od drugega.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Čepin], 1999Language - slovenianCOBISS.SI-ID - 463753
Author
Čepin, Janez
Other authors
Pohleven, Franci |
Petrič, Marko
Topics
glive |
razkroj lesa |
respiracija |
kisik |
ogljikov dioksid |
temperatura |
vlažnost |
fungi |
wood decay |
respiration
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Knjižnica BF za lesarstvo dn 0000000654 IN: 019990148 Knjižnica BF za lesarstvo dn 654 IN: 019990148 |
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Database name | Field | Year |
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Pohleven, Franci | 05248 |
Petrič, Marko | 00395 |
Source: Personal bibliographies
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