Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 37 for “"wood species"”.
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Preservative treatment evaluation of five Appalachian wood species with four preservatives
Hardwoods have been used extensively throughout the years for many uses. In the last century, wood railway tie and bridge material has been treated almost exclusively with the preservative creosote in order to improve durability. This has led to the knowledge that hardwoods treated with creosote …
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Fundamental properties of borate-modified oriented strandboard manufactured from southern wood species
… is one of the techniques for developing durable wood-based construction. This study was conducted to examine the effects of powder zinc borate (ZB) and calcium borate (CB) on resin gel time, strength, swelling, leaching, termite, decay, and mold resistance properties of oriented strandboard …
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Introducing Lesser-Known Wood Species from Certified Forests in Bolivia to the U.S. Market
… chain linked to the importation of tropical hardwood products to assess the market potential for Bolivian lesser-known wood species (LKS) in the U.S. market. One hundred and eleven companies responded to the questionnaire and provided information on their interest in importing lesser-known wood …
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Rolling Shear Strength and Modulus for Various Southeastern US Wood Species using the Two-Plate Shear Test
Cross-Laminated Timber (CLT) is an engineered wood product made by laminating dimensional or structural composite lumber in alternating orthogonal layers. Compared to Canada and Europe, CLT is a novel product to the US. With the additions included in the 2021 International Building Code (IBC), CLT …
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The classification of acoustic emission signals via artificial neural network
Automatic identification of wood species is a long desired goal in the pulp and paper industry. Motivated by this, researchers have investigated Pattern Recognition (PR) for the classification of wood chip species based on acoustic emission signals. In this thesis, a new Artificial Neural Network …
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Wetting and Penetration Behavior of Resin/Wood Interfaces
… was improve the fundamental understanding of the wood-resin interaction, by looking at the relationship between the resin wetting onto wood and the resulting penetration into wood lumens. Wetting was analyzed with the sessile drop method, which observed the initial contact angle and change in …
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Work-related asthma among workers in the Mozambique wood processing industry
Background: Workers in the wood processing industry are exposed to a heterogeneous mixture of inorganic and organic particles comprising wood fragments, viable and non-viable microorganisms, endotoxins, glucans and allergens, with the potential to cause work-related asthma. While this association …
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Studies of the interactions of CCA and ACA preservative treated wood with soil
… changes at the interface between soil, and wood treated with CCA or ACA wood preservatives were investigated using a series of leaching and soil burial studies. The softwoods Scots pine (<i>Pinus sylvestris</i>, L.), Sitka spruce (<i>Picea sitchensis</i>, Carr) and the hardwood lime …
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Structure Based, Two-dimensional, Anisotropic, Transient Heat Conduction model for Wood
… Theoretical analysis and estimations of wood thermal conductivities in the radial and tangential directions were conducted with the geometric models built up from the macro- and micro-structure observations. Theoretically, thermal conductivity in the radial direction is about 1.5 to 2.5 …
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Species Dependence of pMDI/Wood Adhesion
… (pMDI) has increasingly been used in the wood particulate composite industry. Wood composites, especially oriented strand board (OSB) are made with many variations of wood species. Little research has been done to investigate how pMDI adhesion has been affected by species. The present is …
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An investigation of the durability of UK grown softwood distribution poles CCA-treated by sap-displacement
… difference in the treatability of the four wood species. While satisfactory uptake and penetration of copper, chromium and arsenic were recorded for Corsican and Scots pine and Norway spruce, significantly lower levels of CCA penetration and retention were found in Sitka spruce poles. The …
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Studies of water vapor transport and sorption in wood
… of water vapor transport and sorption in wood. It mainly concerns measurements of the weight response of a sample after a step change in relative humidity. The thesis consists of an introduction and eight papers. The eight papers have the following contents: 1. A description of the …
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Spatial and temporal analysis of radial growth in an Appalachian watershed
… between radial growth and climate for four hard wood species, yellow-poplar, northern red oak, chestnut oak and red maple, growing on contrasting topographic aspects of a watershed in north-central West Virginia.;The study showed that all species except northern red oak showed significant …
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Peripheral timber applications for waste wood material in extreme climates and earthquake risk regions
… thesis explores the possibilities of reusing wood that sits at the fringe of construction projects, in applications that bring back the beauty and elegance ingrained in the oldest of building material. In part, this project is a remolding of the perception of undervalued wood species and …
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Evaluation of improved stevedore pallet
… and that special consideration be given to the wood species available in Brazil for pallet assembly, to the use of improved nails, and to the environmental conditions under which stevedore pallets are exposed.
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Evaluation of metal connector plates for repair and reinforcement of wood pallets
… with metal connector plates (MCPs) may reduce wood waste while providing pallet users with quality, economical pallets. The study objectives were to evaluate the effect of MCP repair and reinforcement on pallet performance, and to evaluate preliminary standards for repair and reinforcement of …
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The home center market for hardwood specialty products
Hardwood specialty buyers representing 1600 home centers and lumberyards including the Top 100 home centers according to 1985 sales were surveyed. The objectives of the survey were to characterize the home center market for hardwood specialty products and to obtain an idea of the future direction …
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Studies on the conservation of waterlogged wood in New Zealand
… is a study of properties of certain New Zealand woods recovered from waterlogged environments. The woods are those which were commonly used by the pre-european Maori to make artefacts, and the properties are those which affect the way these artefacts can be conserved after they have been removed …
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Detecting Change in Central California Coast Coho Salmon Habitat in Scotts Creek, California, from 1997–2013
… by major tributary junctions. Although a large woody debris (LWD) survey was not conducted as part of the 1997 survey, contrasting our results with data collected during intervening years indicated that instream LWD has become more abundant, primarily due to increases in hard-wood species (i.e., …
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Pull Manufacturing System Design for Rough Mill Systems: A Case Study
Domestic secondary wood products manufacturers are losing their competitive edge in the global economy. Foreign competition is steadily gaining market-share due to decreased labor costs. While domestic operations can not compete with labor costs available to foreign manufacturers, they may be able …
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