Results 1 to 10 of about 7,599,705 (281)
A Natural Flavonoid Treatment of Wood: Artificial Weathering and Decay Resistance [PDF]
European Journal of Wood and Wood Products, 2020 In this study, a natural flavonoid, chrysin, was used as a wood impregnation agent and evaluated in terms of artificial weathering and decay resistance of wood. For this purpose, Scots pine samples were impregnated with chrysin after tosylation pre-treatment and, then, exposed to artificial weathering for 672 h.
Mahmut Ali Ermeydan, Eylem D Tomak
exaly +5 more sources
Natural Wood Resistance of Mimosa caesalpiniifolia in Field Testing [PDF]
Floresta e Ambiente, 2018 ABSTRACT The natural wood resistance of sabiá (Mimosa caesalpiniifolia) was evaluated under field conditions for use in organic agriculture. A total of 97 one-meter length logs with bark and diameter classes (5.0-7.9 and 8.0-11 cm) were fixed (0.4 m) in the soil at a distance of 0.5 m from the edges of a forest fragment in Viana, Espírito Santo, Brazil
Araujo, João Batista Silva +1 more
openaire +4 more sources
Studies on the material resistance and moisture dynamics of wood after artificial and natural weathering [PDF]
Wood Material Science & Engineering, 2021 Wood is one of the most important building materials. During the service life of wood and derived materials, various degradation factors affect performance.
Eli Keržič, Miha Humar
openaire +4 more sources
Effect of Natural Aging on Oak Wood Fire Resistance [PDF]
Polymers, 2021 The paper deals with the assessment of the age of oak wood (0, 10, 40, 80 and 120 years) on its fire resistance. Chemical composition of wood (extractives, cellulose, holocellulose, lignin) was determined by wet chemistry methods and elementary analysis was performed according to ISO standards. From the fire-technical properties, the flame ignition and
Martin Zachar +3 more
openaire +2 more sources
Study of resistance of thermomodified wood to the influence of natural conditions [PDF]
IOP Conference Series: Materials Science and Engineering, 2021 Abstract It is established that thermal modification provides a decrease in the hydrophobicity of wood. Additional wood surface treatment reduces water absorption factor of 2 and modified sample at a temperature of 220°C – 3 times. Geometric and dimensional stability is improved by 2 times.
Y Tsapko +3 more
openaire +1 more source
Consumer Willingness to Pay for a Naturally Decay-Resistant Wood Product [PDF]
Western Journal of Applied Forestry, 2004 Abstract Chromated copper arsenate (CCA) is the most widely used chemical wood preservative in the United States. Concerns about the safety of CCA led to an agreement between the Environmental Protection Agency and the wood treatment industry to withdraw CCA for nonindustrial uses by the end of 2003. In light of the publicity surrounding
Geoffrey Donovan, Hayley Hesseln
openaire +1 more source
Survey on the natural resistance to decay of five hundred tropical wood species
BOIS & FORETS DES TROPIQUES, 2023 The natural durability of wood species against rot has again become a matter of interest for the uses of wood as a natural material, while the use of synthetic fungicides is being debated. In the mid-20th century, many experimental studies were performed in Europe and North America, using different standardised protocols.
Candelier, Kévin +3 more
openaire +3 more sources
Phenolic Extractives and Natural Resistance of Wood
, 2013 Wood is a natural organic material that consists mainly of two groups of organic compounds: carbohydrates (hemicelluloses and cellulose) and phenols (lignin), that correspond to (65-75%) and (20-30%), respectively (Pettersen 1984). The wood is also constituted of minor amounts of extraneous materials, mostly in the form of organic extractives (usually ...
M. S. +4 more
openaire +2 more sources
Natural Resistance of Seven Amazon Woods to Xylophagous Termite Nasutitermes octopilis (Banks) [PDF]
Floresta e Ambiente, 2019 ABSTRACT Some Amazonian woods are considered highly resistant to the attack of microorganisms; however, which ones present the highest resistance is unknown. This study aimed to evaluate the natural resistance of seven woods to xylophagous termite Nasutitermes octopilis through a no-choice feeding assay.
Flávio Nascimento Costa +4 more
openaire +4 more sources
Evaluation of the association between natural mold resistance and chemical components of nine wood species [PDF]
BioResources, 2018 The association between natural mold resistance and the wood’s chemical components was studied for nine wood species. The mold resistance of the different wood species was tested by artificially accelerated tests and scanning electron microscopy (SEM). The chemical components were analyzed by gas chromatography-mass spectrometry (GC-MS).
Jing Feng +5 more
openaire +1 more source