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    • ACTA FACULTATIS XYLOLOGIAE ZVOLEN Journal

    Papers
    Influence Of Selected Factors On Colour Change Of The Transparent Finishes At Beech Wood
    Gabriela Slabejova,Jozef Fekiac,Milos Panek
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2014）
    This article is focused on the influence of coating thickness on colour changes of beech surface with transparent coating. The influence of following factors has been also observed: treatment of wood surfaces before coatings application, and the type of coating. The influence of ...
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    The Influence Of The Heat Rate To Thermal Decomposition Of Wood Fibre Insulation
    Peter Rantuch,Danica Kacikova,Jozef Martinka,Karol Balog
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2014）
    In terms of fire safety, it is necessary to understand the behaviour of insulation materials during thermal load, as they are widely used in the building industry.Samples of wood fibreboard insulation with weight between 1,002 g and 1,006 g were heat stressed by four heating rate...
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    Impact Of Pressing Parameters On The Hardness Change Of The Pressed Veneers
    Martin Palko,Jan Zemiar,Vladimir Vacek
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2012）
    The paper is focused on the pressing - compressing of veneers. The goal of the work was to find out experimentally and to evaluate the impact of the pressing factors on changes in static and dynamic hardness of beech veneers. In the introduction, there is presented theoretical kn...
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    The Changes Of Saccharides In Willow Wood (Salix Alba L.) During Water Prehydrolysis
    Viera Kucerova,Eva Vybohova
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2014）
    In this study the changes of saccharides content of willow (Salix alba L.) wood during water prehydrolysis at temperature 180 degrees C and four different durations (30, 60, 120 and 240 min) were described. Samples of solid residues after water prehydrolysis were treated by Tappi...
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    CHEMICAL CHARACTERISATION OF EUROPEAN BEECH (Fagus sylvatica L.) MATURE WOOD AND FALSE HEARTWOOD
    Eva Vybohova,Anna Oberle
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2023）
    False heartwood in European beech (Fagus sylvatica L.) is a significant defect reducing the usability of the wood for aesthetic reasons. The aim of this work was to compare the chemical composition of mature wood and false heartwood of beech regarding their different coloring. Th...
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    Colouring Of Beech Wood During Thermal Treatment Using Saturated Water Steam
    Ladislav Dzurenda
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2014）
    In this paper, there are presented the results of colour change of beech wood in the process of thermal treatment - steaming using saturated water steam. In this process, the colour of beech wood changes from pale white-grey with a yellow tint through brown-pink to a dark red-bro...
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    A Comparison Of The Importance Of The Furniture Manufacturing In Eu Countries Using Cluster Analysis And Hellwig'S Method
    Emilia Grzegorzewska,Mariana Sedliacikova, Jan Kalafus
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2021）
    The goal of the paper was to compare the importance of the furniture manufacturing industry in the European Union and indicate the groups of countries showing similarities in terms of the selected economic and production features. For this purpose, cluster analysis and multivaria...
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    Surface properties of a medium density fibreboard evaluated from the viewpoint of its surface treatment
    Jozef Kudela
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2020）
    The paper is focused on the study and analysis of specified surface properties of medium density fibreboards (MDF). The primary purpose was to acquire data expressing the surface properties of these materials. The study results related to the morphology of the MDF surface show st...
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    MATHEMATICAL DESCRIPTION OF THE WOOD THERMAL CONDUCTIVITY ABOVE THE HYGROSCOPIC RANGE DURING WOOD FREEZING
    Nencho Deliiski,Natalia Tumbarkova,Ladislav Dzurenda,Veselin Brezin
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2015）
    A mathematical description of the wood thermal conductivity lambda of wood above the hygroscopic range during freezing of wood has been suggested. The description takes into account the physics of the freezing process of both the free and the hygroscopically bound water in wood. ...
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    THE EFFECT OF TEMPERATURE AND MOISTURE CHANGES ON MODULUS OF ELASTICITY AND MODULUS OF RUPTURE OF PARTICLEBOARD
    Sergiy Kulman,Liudmyla Boiko,Diana Hamary Gurova,Jan Sedliacik
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2019）
    Taking into account nonlinear effects in the reaction of wood composite materials during the thermal, moisture and power loads, the strength phenomenological model can be created. Bending strength and modulus of elasticity of different types of particleboards were studied at the ...
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    Carbohydrates Analysis Arising At Wood Hydrolysis Of Populus X Euramericana 'I-214'
    Frantisek Kacik,Jaroslav Durkovic,Jozef Sivak
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2012）
    Poplar wood is a suitable raw material for bioethanol production. The first step in its making includes pre-treatment with water or dilute acids at an elevated temperature. In this step, the hemicelluloses are hydrolysed and make more accessible the crystalline part of cellulose ...
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    Christmas tree ignition by sparklers
    Miroslava Nejtkova, Martin Podjukl
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2021）
    The paper deals with the potential of sparklers to ignite a Christmas tree. The conclusions from the experimental measurements when four fir trees decorated with Christmas ornaments were tested and burning sparklers were used for the ignition of a Christmas tree are presented in ...
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    THE EFFECT OF METAL NANOPARTICLES ON FORMALDEHYDE EMISSION FROM WOOD BASED MATERIALS
    Olena Pinchevska, Kostyantyn Lopatko, Larysa Lopatko,Rostislav Oliynyk,Jan Sedliacik
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2023）
    Considering the significant production volume of wood composite materials, the search for ecological solutions to reduce formaldehyde emissions during their pressing and further operation is urgent. The effect of nanoparticles of zinc, aluminium, and iron metals on formaldehyde e...
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    INFLUENCE EFFECT OF WOOD LASER ENGRAVING MODE ON AESTHETIC PERCEPTION OF IMAGES
    Mikhail Chernykh,Maria Zykova,Vladimir Stollmann,Maxim Gilfanov
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2022）
    The effect of laser machine resolution, image format, and way of template processing on the aesthetic value of engravings made on birch wood are mentioned in the paper using an expert evaluation method. It is proposed to point out the following components of the aesthetic value o...
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    PERCEPTION OF SUPPLIED FURNITURE AND ITS INNOVATION BY SLOVAK CUSTOMERS
    Erika Loucanova,Miriam Olsiakova,Hubert Palus
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2022）
    The paper deals with the perception of the supplied furniture and its innovation by Slovak customers. The Kano model as the primary method for identifying the preferences in furniture purchase by Slovak customers is used. The expectations and demands of customers for furniture ut...
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    Ultrasonic And Drill Resistance Defectoscopy Of Coniferous And Broadleaved Logs
    Ladislav Reinprecht,Jaroslav Hrivnak
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2012）
    Qualitative sorting of logs is based on detection of decay or other defects and anomalies in the felled trees in forests and also in logs stored in the forest and timber stocks. In this work decay or other damages in twenty four 4-meter long stored logs of spruce, fir, beech, oak...
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    Analysis Of Saccharides From Hydrolysis Of Mixture Of Recycling Fibres From Waste Paper
    Lenka Halajova,Frantisek Kacik
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2012）
    Pulp and paper industry produce a lot of waste, which contains the rest of pulp fibres. The most effective way to execute paper sludge is hydrolysis. Obtained sugars can be further utilize e.g. for fermentation of monosaccharides to the ethanol, potential fuel, which can replace ...
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    Common Sulphate Cooking of Beach and Oak Wood
    Blazej Seman,Anton Geffert
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2014）
    This work deals with common sulphate cooking of heartwood (oak) and sapwood (beech) and their influence on the sulphate cooking process. Sulphate pulp from beech, oak and from the mixture of both was prepared under the same conditions. In the prepared unbleached pulp were observe...
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    Influence Of Selected Factors On Stability Of Particle-Board Columns Loaded In Buckling. Part 3. Moisture Content
    Jozef Kudela, Jana Hovorkova
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2010）
    The work deals with how moisture content influences the critical stress, or buckling strength of short, medium-long and long columns made of particle boards. We also present a coefficient for conversion of strength values at a moisture content w(1) to the values corresponding to ...
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    Analysis of the thermal bridge of wood-aluminum window installation position
    Roman Nota,Zuzana Danihelova
    ACTA FACULTATIS XYLOLOGIAE ZVOLEN（2021）
    Low-energy houses and passive houses are characterised by having building envelopes with low thermal resistance. Windows of such buildings are required to meet higher demands in terms of heat thermal as well. The window installed in the wall creates a structural thermal bridge, w...
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