"Power saws require a relatively large amount of oil for their operation the reason being idle lubrication of the cutting chain. Oil leakages in the environment can result in soil and water contamination and are known to impact both flora and fauna. Many countries in Europe struggle to minimize the damage by imposing the use of biologically degradable oils for these purposes. The work presents an assessment of these biologically degradable oils from the viewpoint of their possible occurrence in environment and from the viewpoint of their technical characteristics which affect reliability and economy of working with power saws. Oil dispersion is evaluated especially from the viewpoint of the concentration of its occurrence on the soil surface after cutting with the power saw. Technical properties evaluated include heat-oxidation stability and pumping properties of oils at low temperatures. There are original methods of measurement developed for these purposes, which facilitate high repeatability of res"@en . "1212-4834" . "50" . "Biologicky odbourateln\u00E9 oleje v provozu motorov\u00FDch pil"@cs . "RIV/62156489:43410/04:00003548!RIV/2005/MSM/434105/N" . "1"^^ . "CZ - \u010Cesk\u00E1 republika" . . . "6"^^ . "556246" . "Biologically Degradable Oils at Working with Power Saws."@en . . . . "542;547" . "biodegradable oils;dispersion of oils;forest technology;methods of oils evaluation"@en . . . "Biologically Degradable Oils at Working with Power Saws." . . "43410" . "Power saws require a relatively large amount of oil for their operation the reason being idle lubrication of the cutting chain. Oil leakages in the environment can result in soil and water contamination and are known to impact both flora and fauna. Many countries in Europe struggle to minimize the damage by imposing the use of biologically degradable oils for these purposes. The work presents an assessment of these biologically degradable oils from the viewpoint of their possible occurrence in environment and from the viewpoint of their technical characteristics which affect reliability and economy of working with power saws. Oil dispersion is evaluated especially from the viewpoint of the concentration of its occurrence on the soil surface after cutting with the power saw. Technical properties evaluated include heat-oxidation stability and pumping properties of oils at low temperatures. There are original methods of measurement developed for these purposes, which facilitate high repeatability of res" . "Biologically Degradable Oils at Working with Power Saws."@en . . "Motorov\u00E9 pily pot\u0159ebuj\u00ED ke sv\u00E9mu provozu relativn\u011B velk\u00E9 mno\u017Estv\u00ED oleje ke ztr\u00E1tov\u00E9mu maz\u00E1n\u00ED \u0159ezac\u00EDho \u0159et\u011Bzu. \u00DAniky t\u011Bchto olej\u016F do okoln\u00EDho prost\u0159ed\u00ED mohou zne\u010Di\u0161\u0165ovat p\u016Fdu i vodu, mohou \u0161kodit fl\u00F3\u0159e i faun\u011B. Mnoho zem\u00ED, zejm\u00E9na v Evrop\u011B, se sna\u017E\u00ED tyto \u0161kody minimalizovat t\u00EDm, \u017Ee ukl\u00E1daj\u00ED pou\u017E\u00EDvat pro tyto \u00FA\u010Dely pouze biologicky odbourateln\u00E9 oleje. p\u0159edkl\u00E1dan\u00FD p\u0159\u00EDsp\u011Bvek hodnot\u00ED tyto biologicky odbourateln\u00E9 oleje z hlediska mo\u017Enost\u00ED jejich v\u00FDskytu v prost\u0159ed\u00ED a z hlediska jejich technick\u00FDch vlastnost\u00ED, ovliv\u0148uj\u00EDc\u00EDch spolehlivost a ekonomi\u010Dnost pr\u00E1ce motorov\u00FDch pil. Rozptyl oleje je hodnocen zejm\u00E9na z hlediska koncentrace jeho v\u00FDskytu na p\u016Fdn\u00EDm povrchu po \u0159ez\u00E1n\u00ED s motorovou pilou. Z technick\u00FDch vlastnost\u00ED byly hodnoceny zejm\u00E9na tepeln\u011B-oxida\u010Dn\u00ED stabilita a \u010Derpatelnost olej\u016F za n\u00EDzk\u00FDch teplot. Pro tyto \u00FA\u010Dely byly vyvinuty origin\u00E1ln\u00ED metody m\u011B\u0159en\u00ED, umo\u017E\u0148uj\u00EDc\u00ED vysokou opakovatelnost v\u00FDsledk\u016F. C\u00EDlem t\u011Bchto snah je zajistit, aby oleje m\u00E9n\u011B zat\u011B\u017Euj\u00EDc\u00ED p\u0159\u00EDrodn\u00ED prost\u0159ed\u00ED m\u011Bly kl\u00ED\u010Dov\u00E9 technick\u00E9 parametry ales"@cs . "[D485F7F290CB]" . . "Biologicky odbourateln\u00E9 oleje v provozu motorov\u00FDch pil"@cs . . "Biologically Degradable Oils at Working with Power Saws." . "11" . . . "Skoup\u00FD, Alois" . "RIV/62156489:43410/04:00003548" . "Z(MSM 434100005)" . "1"^^ . . . "Journal of Forest Science" . .