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1. The effect of fibreboard (MDF) disintegration technique on wood polymer composites (WPC) produced with recovered wood particles

Author:
Bütün, Fahriye Yağmur; Sauerbier, Philipp; Militz, Holger; Mai, Carsten
Source:
Composites 2019 v.118 pp. 312-316
ISSN:
1359-835X
Subject:
wood; wood fibers,   etc   ; fiberboards; milling; polypropylenes;     Show all 5 Subjects
Abstract:
... The objective of this study is to evaluate and compare the mechanical and water-related properties of WPC containing two types of recovered wood particles. These particles were obtained by thermo-hydro-mechanical and sole mechanical (milling) disintegration and compared to virgin wood fibres. The respective composites were produced with and without maleic anhydride-grafted polypropylene (MAPP) as ...
DOI:
10.1016/j.compositesa.2019.01.006

2. Processing characteristics of laser micro incising and possibility of its high speed processing

Author:
Fukuta, Satoshi; Nomura, Masaki; Ikeda, Takeshi; Wakabayashi, Koji
Source:
European journal of wood and wood products 2019 v.77 no.2 pp. 249-255
ISSN:
0018-3768
Subject:
wood,   etc   ; energy; incising; irradiation;     Show all 4 Subjects
Abstract:
... In order to clarify the processing characteristics of wood by UV laser and to improve the processing speed of laser micro incising, the influences of pulse repetition rate and pulse energy of the laser on processing efficiency were investigated. As a result, it was found that each parameter combined affects the processing efficiency and processing form of wood. Based on the optimum processing cond ...
DOI:
10.1007/s00107-019-01384-0

3. Correction to: An optical method for rapid examination of check development in decorative plywood panels

Author:
Burnard, Michael David; Muszyński, Lech; Leavengood, Scott; Ganio, Lisa
Source:
European journal of wood and wood products 2019 v.77 no.1 pp. 171
ISSN:
0018-3768
Subject:
wood,   etc   ; plywood; rapid methods;     Show all 3 Subjects
Abstract:
... In the original publication, a recent source of funding was not included in the acknowledgements section. ...
DOI:
10.1007/s00107-018-1372-2

4. Effects of preheating temperature, preheating time and their interaction on the sandwich structure formation and density profile of sandwich compressed wood

Author:
Wu, Yanmei; Qin, Li; Huang, Rongfeng; Gao, Zhiqiang; Li, Ren
Source:
Journal of wood science 2019 v.65 no.1 pp. 11
ISSN:
1435-0211
Subject:
compressed wood; wood,   etc   ; Populus canadensis; deformation; heat treatment; temperature;     Show all 6 Subjects
Abstract:
... Effects of preheating times (4, 8, and 12 min), preheating temperatures (75–210 °C, with 15 °C interval), and their interactions on structures and density profiles of sandwich compressed poplar wood (Populus × euramericana cv. ‘Neva’) were studied to achieve better control of the position(s) of compressed layer(s), with the aim of better utilization of the low-density wood resources. Our findings ...
DOI:
10.1186/s10086-019-1791-7

5. Post-harvesting dynamics of the deadwood profile: the case of lowland beech-oak coppice-with-standards set-aside stands in France

Author:
Larrieu, L.; Cabanettes, A.; Gouix, N.; Burnel, L.; Bouget, C.; Deconchat, M.
Source:
European journal of forest research 2019 v.138 no.2 pp. 239-251
ISSN:
1612-4669
Subject:
dead wood; wood,   etc   ; coppicing; harvesting; logging; temperate forests; trees; France;     Show all 8 Subjects
Abstract:
... In most European temperate forests, the heavy harvesting of low-quality wood for energy, a low minimum harvest diameter and a short rotation period, result in the limited deadwood resources. However, areas are being set aside in managed forests to restore deadwood levels. Coppice-with-standards is a silvicultural method characterized by periodic logging which clear-cuts coppice trees and removes s ...
DOI:
10.1007/s10342-019-01164-8

6. CarDen: A software for fast measurement of wood density on increment cores by CT scanning

Author:
Jacquin, Philippe; Mothe, Frédéric; Longuetaud, Fleur; Billard, Antoine; Kerfriden, Baptiste; Leban, Jean-Michel
Source:
Computers and electronics in agriculture 2019 v.156 pp. 606-617
ISSN:
0168-1699
Subject:
wood; wood density,   etc   ; biomass; computed tomography; computer software; trees;     Show all 6 Subjects
Abstract:
... Increment cores are often used in wood science for measuring wood density of trees non destructively and at large scale, for instance with the objective to assess the available biomass in a forest resource. This paper presents a software allowing to measure by X-ray computed tomography (CT) the wood density of thousands increment cores. The software is able to process 3000 cores per hour semi-auto ...
DOI:
10.1016/j.compag.2018.12.008

7. Effects of short-cut fiber type and water-jet pressure sum on wet strength and dispersibility of wood pulp-based wetlaid/spunlace wipes

Author:
Zhang, Yinjiang; Xu, Yukang; Zhao, Yi; Huang, Chen; Jin, Xiangyu
Source:
European journal of wood and wood products 2019 v.77 no.1 pp. 33-43
ISSN:
0018-3768
Subject:
wood; wood pulp,   etc   ; dispersibility; guidelines; hydrophilicity; polyesters; wet strength;     Show all 7 Subjects
Abstract:
... Wetlaid/spunlace (wetlace) materials consisting of wood pulp and short-cut fibers are leading the way in the development of dispersible moist wipes due to their wet strength during use and disintegration under flow field. However, short-cut fibers are still not well understood in terms of reasonable balance between material wet strength and dispersibility. In this study, wetlace materials were pre ...
DOI:
10.1007/s00107-018-1369-x

8. Strength and stiffness of the reaction wood in five Eucalyptus species

Author:
Soares, Bruno Charles Dias; Lima, José Tarcísio; Goulart, Selma Lopes; Assis, Claudineia Olímpia de
Source:
Holzforschung 2019 v.73 no.2 pp. 219-222
ISSN:
1437-434X
Subject:
compression wood; tension wood; wood,   etc   ; Eucalyptus; mechanical properties; pith; planting; stems; trees;     Show all 9 Subjects
Abstract:
... Tree stems deviating from the vertical position react by the formation of tension wood (TW) or compression wood (CW), which are called in general as reaction wood (RW), in which the cells are modified chemically and anatomically. The focus of the present work is the mechanical behavior of TW in five 37-year-old Eucalyptus species, which were grown on a planting area with an average slope of 28% le ...
DOI:
10.1515/hf-2018-0091

9. Theoretical and experimental considerations on the neutral axis of wood beams with a hole in different locations

Author:
Wen, Yuxin; Yang, Ping; Zhao, Jian; Zhao, Dong
Source:
Holzforschung 2018 v.72 no.9 pp. 769-777
ISSN:
1437-434X
Subject:
wood; wood beams,   etc   ; digital images;     Show all 3 Subject
Abstract:
... Holes contribute to the non-homogeneous nature of solid wood and shift the neutral axis of wood beams away from the centroid. Based on the plane-section assumption and idealized trapezoidal distribution, new calculating formulas will be presented in terms of the location of neutral axis for clear beams and wood beams with a hole at the center, compression zone and tension zone. To verify the resul ...
DOI:
10.1515/hf-2017-0174

10. Arsenic, copper, and chromium from treated wood products in the U.S. disposal sector

Author:
Jones, Athena S.; Marini, Juniper; Solo-Gabriele, Helena M.; Robey, Nicole M.; Townsend, Timothy G.
Source:
Waste management 2019 v.87 pp. 731-740
ISSN:
0956-053X
Subject:
preservative treated wood; waste wood; wood,   etc   ; arsenic; chromated copper arsenate; chromium; copper; guidelines; industry; landscaping; leaching; models; mulches; pollution; recycling; statistics; wood preservatives; wood treatment; wood volume; United States;     Show all 20 Subjects
Abstract:
... Construction and demolition (C&D) wood can be recycled as mulch for landscaping or cogeneration. Limitations to such recycling are dependent on metals concentrations in mulch (As, Cu, and Cr) from the inclusion of waterborne-preservative treated wood. The objective of this study was to evaluate the amount of waterborne-preservative treated wood (by wood volume and by mass of metal) that enters the ...
DOI:
10.1016/j.wasman.2019.03.004

11. Effects of a great cormorant colony on wood-inhabiting fungal communities in a coastal Scots pine forest

Author:
Iršėnaitė, Reda; Arslanova, Tatjana; Kasparavičius, Jonas; Kutorga, Ernestas; Markovskaja, Svetlana; Matulevičiūtė, Dalytė; Taraškevičius, Ričardas; Motiejūnaitė, Jurga
Source:
Fungal ecology 2019 v.41 pp. 82-91
ISSN:
1754-5048
Subject:
dead wood; wood; wood chemistry,   etc   ; Phalacrocorax carbo; Pinus sylvestris; birds; coniferous forests; fruiting; fungal communities; fungi; nesting; stand characteristics;     Show all 12 Subjects
Abstract:
... We studied the changes in the wood-inhabiting fungal communities on dead wood of Scots pine (Pinus sylvestris) under varying duration and intensity of cormorant nesting. The activities of the birds created large amounts of dead wood, changed wood chemistry and altered stand characteristics. Analyses based on records of fruiting structures of fungi showed that fungal communities in the cormorant co ...
DOI:
10.1016/j.funeco.2019.03.010

12. Deep learning for use in lumber classification tasks

Author:
Hu, Junfeng; Song, Wenlong; Zhang, Wei; Zhao, Yafeng; Yilmaz, Alper
Source:
Wood science and technology 2019 v.53 no.2 pp. 505-517
ISSN:
0043-7719
Subject:
wood; wood grading; wood industry,   etc   ; algorithms; data collection; digital images; experts; humans; image analysis; lumber; neural networks;     Show all 11 Subjects
Abstract:
... Digital image processing has been widely used in the wood industry, and it is expected that the algorithms are accurate and have low computational complexities, especially for the real-time lumber grading and lumber classification processes. This paper investigates variations of deep learning strategies based on ResNet18 for classification of lumber images. The four datasets used in this work were ...
DOI:
10.1007/s00226-019-01086-z

13. Does the location of enrichment material affect behavior and dirtiness in growing female pigs?

Author:
Dalmau, Antoni; Areal, Bruno; Machado, Silvana; Pallisera, Joaquim; Velarde, Antonio
Source:
Journal of applied animal welfare science 2019 v.22 no.2 pp. 116-126
ISSN:
1532-7604
Subject:
wood,   etc   ; animal welfare; females; swine; environmental enrichment;     Show all 5 Subjects
Abstract:
... The objective of this study was to investigate if female growing pigs spend similar amounts of time exploring a wooden stick as they do exploring enrichment material regardless of its proximity to the feeder. Forty-eight pigs aged 18 to 26 weeks allocated to 16 pens with three pigs per pen were studied. Fifty percent of the pens had a wooden stick beside the feeder, and the rest had a similar stic ...
DOI:
10.1080/10888705.2018.1443816

14. Failure conditions of solid wood on off-axis compression testing

Author:
Yoshihara, Hiroshi
Source:
Holzforschung 2019 v.73 no.3 pp. 251-258
ISSN:
1437-434X
Subject:
wood,   etc   ; compression strength; prediction; shear stress; trees;     Show all 5 Subjects
Abstract:
... Off-axis compression tests (OACT) were conducted on solid wood from six tree species, and the relationship between the off-axis compressive strength (OACStr) and the off-axis angle was predicted under the conventional Hill-type quadratic failure conditions, off-axis special failure conditions, and under a condition proposed in this study, which contains terms of interaction between the normal and ...
DOI:
10.1515/hf-2018-0089

15. Resource quality of wood waste: The importance of physical and chemical impurities in wood waste for recycling

Author:
Faraca, Giorgia; Boldrin, Alessio; Astrup, Thomas
Source:
Waste management 2019 v.87 pp. 135-147
ISSN:
0956-053X
Subject:
wood,   etc   ; particleboards; persistent organic pollutants; recycling;     Show all 4 Subjects
Abstract:
... Recycling of post-consumer wood waste into particleboard may be hindered by the presence of physical and chemical impurities in the waste stream, therefore calling for increased attention on the quality of wood waste. However, wood waste comprises several uses/types of wood, along with different levels of contamination. This study provides the detailed sampling and characterisation of wood waste a ...
DOI:
10.1016/j.wasman.2019.02.005

16. Cu thin films on wood surface for robust superhydrophobicity by magnetron sputtering treatment with perfluorocarboxylic acid

Author:
Bao, Wenhui; Zhang, Ming; Jia, Zhen; Jiao, Yue; Cai, Liping; Liang, Daxin; Li, Jian
Source:
European journal of wood and wood products 2019 v.77 no.1 pp. 115-123
ISSN:
0018-3768
Subject:
wood,   etc   ; carboxylic acids; copper; hydrophobicity; sand;     Show all 5 Subjects
Abstract:
... Superhydrophobic wood was fabricated using a magnetron sputtering method, which can be applied to substrates with different shapes for its facile and controllable advantages. Copper was deposited on the cross-section surface of pristine wood followed by a treatment of perfluorocarboxylic acid. The results revealed that the deposition thickness played an important role in varying the surface morpho ...
DOI:
10.1007/s00107-018-1366-0

17. A finite element model of semi-rigid mortise-and-tenon joint considering glue line and friction coefficient

Author:
Hu, Wengang; Guan, Huiyuan
Source:
Journal of wood science 2019 v.65 no.1 pp. 14
ISSN:
1435-0211
Subject:
joints (wood); wood,   etc   ; finite element analysis; friction; mathematical models; mechanical properties;     Show all 6 Subjects
Abstract:
... The aim of this study is to build a new numerical model of a mortise-and-tenon joint based on the finite element method (FEM) considering glue line and friction coefficient to analyze the semi-rigid wood joint. Firstly, the friction coefficient, glue distributions and strengths of the mortise-and-tenon joint were determined by experimental methods. Secondly, these parameters were specified to a T- ...
DOI:
10.1186/s10086-019-1794-4

18. Development of bark-based adhesives for plywood: utilization of flavonoid compounds from bark and wood. II

Author:
Matsumae, Tomoyuki; Horito, Masayoshi; Kurushima, Naoko; Yazaki, Yoshikazu
Source:
Journal of wood science 2019 v.65 no.1 pp. 9
ISSN:
1435-0211
Subject:
wood; wood bonding,   etc   ; Pinus radiata; adhesives; bark; cellulose nanofibers; flavonoids; hemicellulose; lignin; plywood; resins; tannins;     Show all 12 Subjects
Abstract:
... Although many conventional adhesives for plywood are formulated with tannins (polyflavanoid compounds) extracted from bark or wood, adhesives using tannin directly without extraction from the bark have also been made. In 2003, the first bark particle (< 63 μm) adhesive was developed from radiata pine bark. In this present study, the quality of the bark adhesive has been improved by fibrillating th ...
DOI:
10.1186/s10086-019-1780-x

19. Impact of production parameters on physiochemical characteristics of wood ash for possible utilisation in cement-based materials

Author:
Sigvardsen, Nina M.; Kirkelund, Gunvor M.; Jensen, Pernille E.; Geiker, Mette R.; Ottosen, Lisbeth M.
Source:
Resources, conservation, and recycling 2019 v.145 pp. 230-240
ISSN:
0921-3449
Subject:
wood ash; wood chips,   etc   ; combustion; energy; fluidized beds; least squares; physicochemical properties; trees;     Show all 8 Subjects
Abstract:
... Energy production is reorganised to mitigate the pressure on the global environment. This reorganisation leads to an increase in the production of wood ash (WA). Multivariate modelling was used to identify the link between production parameters and the physiochemicalcharacteristics of different WAs and to determine which production parameters result in the WAs most suitable for utilisation in ceme ...
DOI:
10.1016/j.resconrec.2019.02.034

20. Detecting and characterizing downed dead wood using terrestrial laser scanning

Author:
Yrttimaa, Tuomas; Saarinen, Ninni; Luoma, Ville; Tanhuanpää, Topi; Kankare, Ville; Liang, Xinlian; Hyyppä, Juha; Holopainen, Markus; Vastaranta, Mikko
Source:
ISPRS journal of photogrammetry and remote sensing 2019 v.151 pp. 76-90
ISSN:
0924-2716
Subject:
dead wood; wood volume,   etc   ; algorithms; biodiversity; boreal forests; data collection; forest ecosystems; forest inventory; trees;     Show all 9 Subjects
Abstract:
... Dead wood is a key forest structural component for maintaining biodiversity and storing carbon. Despite its important role in a forest ecosystem, quantifying dead wood alongside standing trees has often neglected when investigating the feasibility of terrestrial laser scanning (TLS) in forest inventories. The objective of this study was therefore to develop an automatic method for detecting and ch ...
DOI:
10.1016/j.isprsjprs.2019.03.007