Results 31 to 40 of about 818,062 (252)

Bryophytes as ecological indicators in the beech woods of Sicily [PDF]

Nova Hedwigia, 2019
Beech woods, which have in Sicily one of the southernmost places of their distribution area, are localized in the mountain belt of North and North-Eastern Sicily, at an altitude of 1300-1900 m, reaching 900 m on the Peloritani. They are referred to the priority habitat 9210*, according to the Natura 2000 network of the European Union.
Puglisi M., Campisi P., Dia M. G., Privitera M., Spampinato G.   +4 more
openaire   +2 more sources

The Influence of Thermomechanical Smoothing on Beech Wood Surface Roughness

BioResources, 2016
This paper deals with the change of roughness of compressed beech wood. Effects of temperature, pressure, and time on the results of pressing were examined.
Jozef Gáborík, Milan Gaff, Daniel Ruman, Marek Šomšák, Zuzana Gaffová, Tomáš Svoboda, Vojtech Vokaty, Adam Síkora   +7 more
doaj   +1 more source

Effect of SiO2 and Al2O3 nanoparticles treatment on thermal behavior of Oriental beech wood

, 2018
In this study, investigation of the thermal properties of Oriental beech (Fagus orientalis L.) wood samples treated with 1.50 and 3.00% aqueous solutions of SiO2 and Al2O3 nanoparticles were performed by using thermogravimetric analysis (TGA ...
Toker, H., Deveci, I., Sacli, C., Baysal, E., Peker, H., Turkoglu, T.   +5 more
core   +4 more sources

Effect of Feed Speed and Wood Species on Roughness of Machined Surface [PDF]

Drvna Industrija, 2009
In this study, the surface roughness values of planed beech-wood (Fagus L.), oak-wood (Quercus L.) and fir-wood (Abies alba Mill.) specimens were examined. The samples of beech-wood were cut from steamed beech-wood and from thermally modified beech-wood (
Čavlović Ankica, Obućina Murčo, Škaljić Nedim, Beljo Lučić Ružica   +3 more
doaj  

Variability of European beech wood density as influenced by interactions between tree-ring growth and aspect

Forest Ecosystems, 2016
Background: Wood density is considered to be the most important predictor of wood quality but despite its importance, diffuse-porous tree species have been the subject of only a limited number of studies.
Daniela Diaconu, Marc Wassenberg , Heinrich Spiecker   +2 more
doaj   +1 more source

Pore space analysis of beech wood: The vessel network [PDF]

Holzforschung, 2010
AbstractWater transport in wood is vital for the survival of trees. With synchrotron radiation X-ray tomographic microscopy (SRXTM), it has become possible to characterize and quantify the three-dimensional (3D) network formed by vessels that are responsible for longitudinal transport.
Hass, P, Wittel, F K, McDonald, S A, Marone, F, Stampanoni, M, Herrmann, H J, Niemz, P   +6 more
openaire   +3 more sources

Impact Bending Strength and Brinell Hardness of Densified Hardwoods

BioResources, 2016
The objective of this research was to determine the influence of wood species (Fagus sylvatica L. and Populus tremula L.), thickness (4, 6, 10, 18 mm), and degree of densification (0%, 10%, and 20%) on the impact bending strength (IBS) and Brinell ...
Miroslav Gašparík, Milan Gaff, Lenka Šafaříková, Carlos Rodriguez Vallejo, Tomáš Svoboda   +4 more
doaj   +1 more source

SHRINKAGE OF THE GELATINOUS LAYER OF POPLAR AND BEECH TENSION WOOD [PDF]

IAWA Journal, 2001
Macroscopic longitudinal shrinkage of beech and poplar tension wood is higher than in normal wood. This shrinkage is the result of mechanical interactions of cell wall layers. SEM observation of cut, dried surfaces showed that longitudinal shrinkage is much greater in the gelatinous layer than in other layers.
Clair, Bruno, Thibaut, Bernard
openaire   +3 more sources

A Sustainable Bio‐Based Epoxy Thermoset as a High‐Performance Alternative to BPA‐Based Resins

Advanced Science, EarlyView.
A rigid–flexible bio‐based epoxy network integrates soybean oil, lignin, and maleic anhydride to overcome the strength–toughness–sustainability trade‐off of conventional BPA epoxy. The thermoset delivers excellent performance as both a structural adhesive and a matrix for glass‐fabric composites, while enabling pH‐responsive degradation, environmental ...
Jiyun Qi, Xinyi Hui, Xipeng Zhang, Jia‐Long Wen, Tong‐Qi Yuan   +4 more
wiley   +1 more source

Identification and comparison of oil compounds derived from pyrolysis of sound wood and decayed wood of beech by using Gas Chromatography and Mass Spectrometry (GC/MS) [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2015
Among the forest diseases, fungi are the most important factors that cause irreparable losses to the wood in standing trees and logs. Fungi are the cause of contamination and decay of trees and timbers in forest or in the stock of factories.
Saeed Hasani, Seid Khalil Hosseini Hashemi, Ramin Farsi, Ahmad Jahan Latibari   +3 more
doaj   +1 more source