V raziskavi smo poučevali vpliv postopka impregnacije ter vrste emulzije montana voska na retencijo, globino penetracije in porazdelitev v lesu smreke (Picea abies). Uporabili smo tri postopke ...impregnacije: vakuumsko-tlačni, vakuumski in premazovanje. Navzem smo določili gravimetrično. Po impregnaciji smo iz vzorcev pripravili anatomske preparate, na katerih smo pod mikroskopom,preučevali globino prodora in porazdelitev montana voska v vzorcih. Ugotovili smo, da je največ voska prodrlo v aksialni smeri, medtem koje vosek v prečni smeri prodrl le v prve poškodovane celice na površini. Z vakuumsko tlačnim postopkom impregnacije smo v aksialni smeri dosegli globlji prodor voska, ki je presegel dolžino traheid. Delež voska v emulziji ni znatno vplival na globino prodora, medtem ko je vplival na količino oziroma zapolnjenost celic z voskom.
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