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264 records – page 1 of 27.

The ability of bacteria to induce brownstain in western hemlock

https://library.fpinnovations.ca/en/permalink/fpipub5877
Author
Kreber, B.
Hedberg, B.
Date
March 1996
Edition
41145
Material Type
Research report
Field
Sustainable Construction
Author
Kreber, B.
Hedberg, B.
Contributor
Canada. Canadian Forest Service.
Date
March 1996
Edition
41145
Material Type
Research report
Physical Description
7 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Tsuga Heterophylla
Tsuga
Stain
Bacteria
Series Number
Canadian Forest Service No. 32 1/2
Contract no. 1715K024
W-1322
Location
Vancouver, British Columbia
Language
English
Abstract
Three Gram negative bacteria isolated from brownstained western hemlock were investigated for their capacity to produce hemlock brownstain. Brownstain was observed when infecting western hemlock with two bacteria. Oxygen was strongly indicated as being indespensable for the development of brownstain in infected samples. However, pH did not seem to influence the production of this stain.
Tsuga heterophylla - Stains, Chemical
Stains - Chemical
Degradation, Bacterial
Bacteria
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Advancement in osb manufacturing technology

https://library.fpinnovations.ca/en/permalink/fpipub5677
Author
Hsu, W.H.E.
Kirincic, S.
Date
January 1996
Edition
38830
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Hsu, W.H.E.
Kirincic, S.
Date
January 1996
Edition
38830
Material Type
Research report
Physical Description
8 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Thickness
Strands
Resin
Oriented strandboard
Location
Ottawa, Ontario
Language
English
Abstract
Oriented strandboard (OSB) manufacturing technology has been advancing steadily during the past few years. Today, the industry can produce higher quality OSB at lower costs than ever before in the product's history. Research results have shown that drying costs can be reduced and strand quality can be improved through proper wood yard management, and that the production efficiency can be improved through various ways of optimizing the pressing and processing operations. OSB quality has been improved and board density has been reduced by using long and thin strands in panel face layers and relatively short and thick strands in the panel core. The press times have been reduced by using higher press temperatures and higher mat face-layer moisture contents. The degree of strand alignment has been improved by controlling the falling distance from the alignment heads to the top of mat being formed. Strands alignment has been further enhanced by arranging the alignment disc gaps in such a way so that narrower strands can be aligned through narrower gaps and directed towards core while wider strands can be aligned through wider gaps and directed towards the panel surfaces. Based on these technical advancements, OSB can be produced faster and at a lower density without sacrificing quality. Consequently, the OSB industry is in the position to improve panel quality without resorting to costly options such as increasing resin content and press time.
OSB
Advancement
Strand Thickness
Strand Width
Strand Length
Resin Content
Press Temperature
Moisture
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Les alignements des machines de la scierie

https://library.fpinnovations.ca/en/permalink/fpipub41743
Author
Pleau, J.H.
Date
March 1996
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Pleau, J.H.
Date
March 1996
Material Type
Research report
Physical Description
73 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Saws
Sawing
Saw mills
Canada
Series Number
Publication spéciale SP522F
E-2915
Location
Sainte-Foy, Québec
Language
French
ISBN
0864885222
ISSN
08250030
Abstract
L'alignement précis des équipements de coupe est un moyen recommandé pour assurer la maximisation du rendement matière et de la qualité des produits manufacturés. Les tendances de l'industrie s'orientent de plus en plus vers l'utilisation de scies minces et vers une réduction maximale des dimensions-cibles. Il est essentiel pour la qualité des produits désirés que les préposés de l'entretien et de l'alignement des machines fassent un ajustement de haute précision. Le succès d'un alignement précis dépend en grande partie de la précision des outils utilisés pour accomplir ce travail. Un niveau de précision est calibré de façon telle à permettre de mesurer les déviations du nivelage par unité de millième de pouce. Ce livre propose des formules pratiques que l'expérience en milieu de travail peut mettre à profit. Les méthodes d'alignement s'appliquent à l'ensemble de la machinerie des centres de transformation: équarrisseuse-déchiqueteuse ("Chipper Canter"), scie de tête à ruban avec le chariot, scie de tête à rubans jumelés ("Twin Band"), refendeuse verticale, refendeuse à ruban horizontal, scie de tête circulaire avec le chariot et déligneuse à scies multiples ("Bull Edger").
Scieries
Machines
Alignements
Sawmills
Equipment Adjustments
Forintek Canada Corp. - Publications
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Alternate uses for wood treated with carbon-based preservatives at the end of service life

https://library.fpinnovations.ca/en/permalink/fpipub42901
Author
Stirling, Rod
Daniels, C. Robert
Morris, Paul I.
Date
March 2009
Material Type
Research report
Field
Sustainable Construction
Author
Stirling, Rod
Daniels, C. Robert
Morris, Paul I.
Contributor
Canadian Forest Service
Date
March 2009
Material Type
Research report
Physical Description
20 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Waste utilization
Utilization
Recycling
Preservatives carbon
Preservatives
Series Number
W-2976
Location
Vancouver, British Columbia
Language
English
Abstract
The absence of commercial facilities to recycle or recover value from wood treated with metal-based wood preservatives at the end of its service life is one of the most significant negative points in the generally positive life cycle analysis of treated wood. Wood treated with carbon-based preservatives (metal-free) may be far easier to recycle or recover value from since the preservatives are relatively vulnerable to thermal, chemical and biological breakdown. As a result they might be destroyed by kraft pulping, combustion or composting of treated wood. The present research evaluates the use of carbon-based preservative-treated wood in these processes. Kraft pulps produced from wood freshly treated with recommended loadings of carbon-based preservatives contained significant quantities of didecyldimethylammonium carbonate (DDAcarbonate), propiconazole and tebuconazole. However, lower preservative concentration in the wood and intensive pulping may be able to produce pulps without detectable preservatives. The azoles were also detected in significant quantities in the black liquor (DDAcarbonate was not analysed in black liquor). No azoles were found in the ash produced from combustion, but significant quantities were detected in the filtered smoke. DDAcarbonate was not detected in the filtered smoke. Analysis of DDAcarbonate in ash was inconclusive. A composting experiment has been set up and is in progress. Data on preservative breakdown during composting is expected next year.
RECYCLING
Preservatives - Carbon
Waste - Utilization for pulp
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Amélioration de la qualité des copeaux produits en forêt, à l'aide du trieur optopneumatique Simco/Ramic

https://library.fpinnovations.ca/en/permalink/fpipub235
Author
Franklin, G.S.
Date
1996
Edition
36461
Material Type
Research report
Field
Fibre Supply
Author
Franklin, G.S.
Date
1996
Edition
36461
Material Type
Research report
Physical Description
11 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Residues
Quality control
Qualitative analysis
Analysis
Series Number
Rapport spécial ; RS-000113
Language
French
Abstract
Le trieur Pulpwood Sorter de Simco/Ramic a fait l'objet d'essais dans le but de déterminer s'il était capable d'extraire des copeaux sans écorce destinés à la pâte, à partir de copeaux produits en forêt et contenant des quantités connues d'écorce et d'autres débris. Les essais portaient sur quatre types de copeaux: des copeaux de feuillus provenant d'arbres entiers, des copeaux de résineaux provenant de troncs entiers, des copeaux de résineux provenant d'arbres entiers et des copeaux de feuillus produits par une ébrancheuse-écorceuse-déchiqueteuse à fléaux. Les résultats des essais donnent les proportions de copeaux acceptés et de résidus combustibles en pourcentage de l'approvisionnement total à l'entrée, et le rapport estime également le coût de triage par tonne métrique verte.
Copeaux de bois
COPEAUX A PATE
AMÉLIORATION DE LA QUALITÉ
TRIAGE DE COPEAUX PAR MÉTHODE OPTOPNEUMATIQUE
CONTENU EN ÉCORCE
RÉSIDUS COMBUSTIBLES
ANALYSE ÉCONOMIQUE
TRIEUR DE COPEAUX SIMCO/RAMIC
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Analyse de coût comparative de système de récolte et de transport intégrant bois ronds et biomasse forestière

https://library.fpinnovations.ca/en/permalink/fpipub4049
Author
Gingras, Jean-François
Favreau, Jean
Date
1996
Edition
40780
Material Type
Research report
Field
Fibre Supply
Author
Gingras, Jean-François
Favreau, Jean
Date
1996
Edition
40780
Material Type
Research report
Physical Description
18 p
Sector
Forest Operations
Field
Fibre Supply
Research Area
Transportation Infrastructure
Subject
Systems
Roads
Softwoods
Logging
Costs
Canada
Biomass
Analysis
Series Number
Rapport spécial ; RS-000111
Language
French
Abstract
Le présent rapport donne des estimations détaillées des coûts actuels, à destination, des bois ronds de qualité sciage et de qualité pâte, de même que des coûts de la biomasse forestière récoltée dans un système intégré à la récolte des bois ronds. Trois systèmes différents ont été étudiés: la récolte par arbres entiers jusqu'en bordure de route, la récolte par bois tronçonnés intégrés au déchiquetage d'arbres entiers, et la récolte par bois tronçonnés. Les études ont eu lieu dans deux types de sites représentatifs:un site résineux boréal et un site mélangé acadien. Les résultats sont présentés en $/m3 et en $/tmv (tonne métrique verte) pour les bois ronds ainsi que pour la biomasse et du taux d'utilisation des machines produisant la biomasse sont analysés. D'autres facteurs qui affectent la viabilité de la biomasse forestière comme source économique d'énergie font l'objet d'une discussion.
COUT DU BOIS
ANALYSE DE COUT
Étude comparative
Bois ronds
BIOMASSE FORESTIERE
SYSTEMES DE RÉCOLTE
SYSTEMES INTÉGRÉS
Récolte par arbres entiers
EN BORDURE DE ROUTE
Déchiquetage
Résineux
Peuplements mélangés
BIOÉNERGIE
Est du Canada
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Analysis of borate-treated L-joints after five years exposure and inspection after six years

https://library.fpinnovations.ca/en/permalink/fpipub4367
Author
Morris, Paul I.
Ingram, Janet K.
Date
July 1996
Edition
41141
Material Type
Research report
Field
Sustainable Construction
Author
Morris, Paul I.
Ingram, Janet K.
Date
July 1996
Edition
41141
Material Type
Research report
Physical Description
20 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives boron
Preservatives
Series Number
1710C487
W-1313
Location
Vancouver, British Columbia
Language
English
Abstract
As a result of its potential as an added-value, environmentally acceptable, high performance wood product, borate-treated lumber has attracted the interest of the Canadian forest products industry (Byrne 1990). One of the potential markets for borate-treated wood in Europe and North America is millwork. Currently millwork manufacturers use light organic solvent preservatives to provide durability to their products but there are a number of reasons why this situation may change in the near future. There are increasing pressures on uncontrolled emission of volatile organic solvents from treated wood and public concerns regarding some of the active ingredients now in use (Orsler and Holland 1993). The use of borate-treated wood eliminates both of these problems and may provide some additional advantages by eliminating batch processing in the manufacture of joinery. The one factor which is likely to have the greatest impact on the performance of borate-treated millwork is the mobility of the boron. Borate-treated wood is currently approved for use in exterior exposure in New Zealand provided it has a three-coat paint finish. Nevertheless there is concern outside New Zealand that redistribution of boron within the treated wood could lead to localized depletion and decay. An L-joint test of borate-treated wood was set up by Forintek to determine whether preservative depletion and subsequent decay is likely to be a problem. This report describes the performance results of this trial after six years and compares borate content of the L-joints initially and after five years exposure.
Preservatives - Boron
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Analysis of western red cedar heartwood extractives by liquid chromatography/mass spectrometry and identification of unknown compound J

https://library.fpinnovations.ca/en/permalink/fpipub1428
Author
Daniels, C. Robert
Stirling, Rod
Date
February 2009
Edition
37928
Material Type
Research report
Field
Sustainable Construction
Author
Daniels, C. Robert
Stirling, Rod
Date
February 2009
Edition
37928
Material Type
Research report
Physical Description
23 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Thuja
Thuja plicata
Series Number
General Revenue Report Project No. 3807
W-2604
Location
Vancouver, British Columbia
Language
English
Abstract
To better understand the role extractives play in western red cedar’s decay resistance, commonly detected but unknown extractives need to be identified and evaluated for their potential contribution to natural durability. A new liquid chromatography/mass spectrometry (LC/MS) method for separating extractives from western red cedar has been developed. Mass spectral detection provides useful structural information that gives increased confidence in peak identifications and helps to identify unknown peaks. Using LC/MS data, combined with data from UV and NMR spectroscopy, unknown compound J commonly found in many samples of WRC we have analysed, was identified as alpha-thujaplicin. This was known to be a major extractive in eastern white cedar but was considered to be a negligible component of WRC. Its potential contribution to the durability of WRC has not been considered in previous work attempting to correlate durability to specific extractives.
Thuja plicata - Extractives
Thujaplicins
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Avancement des travaux et rapport final projet d'optimisation d'une raboteuse : annee 1995-96

https://library.fpinnovations.ca/en/permalink/fpipub4901
Author
Laganière, B.
Date
March 1996
Edition
41727
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Laganière, B.
Contributor
Quebec. Ministere des Forets
Date
March 1996
Edition
41727
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Digitalization
Subject
Planing
Planers
Optimization
Series Number
E-2796
Location
Sainte-Foy, Québec
Language
French
Abstract
Planers - Optimization
Planing
Raboteuse - Optimisation
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Biology and management of bluestain fungi

https://library.fpinnovations.ca/en/permalink/fpipub4615
Author
Uzunovic, Adnan
Date
March 2009
Edition
41414
Material Type
Research report
Field
Sustainable Construction
Author
Uzunovic, Adnan
Contributor
Canada. Canadian Forest Service.
Date
March 2009
Edition
41414
Material Type
Research report
Physical Description
4 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Stain fungal
Stain
Series Number
Canadian Forest Service No. 38
W-2664
Location
Vancouver, British Columbia
Language
English
Abstract
The objectives of the project are to determine the major source of bluestain fungi and determine the mechanisms of their dispersion, and to determine the biology and weak points of pests that may be expoited to control them.
Stain - Fungal - Control
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264 records – page 1 of 27.