نتایج جستجو برای: trametes versicolor و coniophora puteana
تعداد نتایج: 762753 فیلتر نتایج به سال:
در این تحقیق مقاومت به پوسیدگی چوب صنوبر دلتوئیدس اشباع شده با نانواکسید روی در برابر قارچ پوسیدگی سفید trametes versicolor و قارچ پوسیدگی قهوه ای coniophora puteana مورد بررسی قرار گرفت. جهت تهیه سوسپانسیون نانواکسید روی از دو معلق کننده متفاوت (پلی اتیلن گلیکول 400 و رزین اکریلیک) استفاده شد. نمونه های آزمایشی با ابعاد 2×2×2 سانتی متر از برون چوب صنوبر بدون هر گونه عیب ظاهری تهیه و در سه سطح...
The decay resistance of oil-heat treated aspen wood (Populus tremula l.) against white rot fungi (Coriolus versicolor) and brown rot fungi (Coniophora puteana) was investigated. Three different temperature stages and two time levels for oil heat treatment for the selection of optimum conditions were determined. Linseed oil as a heating medium was used. The mass loss of treated samples that were...
Treatment of wood with various physical and chemical factors can change the number parameters, which also lead to changes in resistance wood-destroying fungi. This study evaluates effects hydrothermal treatments (additives Fe2O3 or FeCl3 without commercial tannins, additives fresh wood) on decay mould fungi modified Scots pine (Pinus sylvestris), Norway spruce (Picea abies), Douglas fir (Pseudo...
Cement bonded particleboards were manufactured from hornbeam (Carpinus betulus L.) wood particles. Hydration tests were carried out to determine the inhibitory index in order to characterise wood-cement compatibility. The results revealed that the mixture of hornbeam -cement can be classifi ed as moderate inhibition. Two wood: cement ratios were applied in this study, namely 1:3 and 1:4, for th...
در این تحقیق مقاومت به پوسیدگی برون چوب صنوبر دلتوئیدس تیمار حرارتی شده در هوای محیط و روغن کلزا مورد بررسی قرار گرفت. برای این منظور نمونههایی از چوب صنوبر با ابعاد 19×19×19 میلیمتر بر طبق استاندارد D 1413 ASTM تهیه شدند. تیمار حرارتی در دمای 180، 200 و220 درجه سانتیگراد و در مدت 2 و 4 ساعت در هوای محیط و روغن کلزا انجام شد. سپس کاهش حجم نمونهها اندازهگیری شد. نمونههای آزمایشی به مدت 12 ه...
Organik bir malzeme olan odun, odun tahripçisi organizmalar tarafından bozundurulmakta ve tahrip edilebilmektedir. Bu amaçla geçmişten günümüze kadar birçok emprenye maddesi geliştirilmiş halen de geliştirilmeye devam etmektedir. çalışmada, sarıçam örnekleri %0,25, 0,5, 1, 1,5 2,5 konsantrasyon seviyesinde çinko klorür (ZnCl2), nano seryum oksit (CeO2), (ZnO) bakır II sülfat (CuSO4) ile edilere...
Boron compounds in the form of boric acid, borax or disodiumoctaborate tetrahydrate have been used as insecticide, fungicide and fire retardant wood preservatives industry for decades. Also, copper is most commonly component relatively modern it highly effective against fungi. The objective this study was to investigate combustion decay resistance boron-copper based solutions which were develop...
Sugarcane Bagasse (SCB) has some characteristics that hinder its direct use as fuel. Torrefaction pre-treatment could be considered to improve the SCB properties for an energy and reduce impact of storage on reduction these properties. were torrefied at 290 °C in a screw reactor, during 5, 7.5 10 min. Then, raw samples exposed successively water-leaching white brown rot fungi, emulate condition...
Abstract Pressurized hot water extraction (HWE) treatment has the benefit of simultaneous hemicellulose-based carbohydrates and modification solid phase, but it does not drastically improve wood durability. However, removing hemicelluloses from by HWE creates water-filled spaces in cell walls which could be filled with agent order to properties wood. Without drying, can added into saturated via...
The Atlas cedar, Cedrus atlantica is a resinous species of Pinaceae originated from North Africa and well known for its noble timber. This work was conducted to assess the natural durability of its wood, to study the chemical composition of essential oil extracted from its sawdust wood and to test the bioactivity of this essential oil against four wood decaying fungi: Gloeophyllum trabeum, Olig...
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