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 67 for “"Softwood"”.
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Empirically derived dimensions of quality for softwood lumber
Quality perceptions of three major softwood lumber consumers: wood treaters, truss manufacturers, and home centers were investigated to determine their definition of softwood lumber quality. Data was gathered through a mail survey of buyers in each of the three groups. In total, 867 responses were …
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Time-Based Manufacturing System Design for Softwood Lumber Production
… investigated the use of pull production at the softwood lumber manufacturing operation. Effective implementation of pull production would require improving headrig optimization programs, presorting material by grade before drying, little or no drying degrade, and reducing both drying and cooling …
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Mechanical Properties of Hybrid Softwood and Hardwood Cross-Laminated Timbers
… version of PRG-320 only allows the use of softwood species for commercial production of cross-laminated timber (CLT) in the US. However, recent studies have investigated the possibility of using hardwood species for CLT and have shown promising results. In parallel to this, the next version …
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Biosynthesis and function of glucuronic acid substitution patterns on softwood xylan
… and housing for a growing population. Softwood is mainly composed of cellulose, galactoglucomannan, xylan and lignin. This thesis focuses on the biosynthesis and function of Glucuronic acid (GlcA) decorations on softwood xylan. Results demonstrate that this GUX (GlucUronic acid …
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An analysis of factors influencing selection of softwood framing lumber utilized in residential construction
Thesis (M.S.)--Michigan State University. Dept. of Forest Products, 1966
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An investigation of the durability of UK grown softwood distribution poles CCA-treated by sap-displacement
The decay susceptibility of UK grown Corsican pine, Scots pine, Norway spruce and Sitka spruce poles treated with CCA by the high pressure sap-displacement process, was investigated using full size poles in a field site and representative pole sections in an accelerated decay …
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The British Columbia softwood lumber industry and its economic effects on the Western United States lumber industry
Thesis (M.S.)--Michigan State University. Dept. of Forest Products, 1963
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The price sensitivity of industrial buyers to softwood lumber product and service quality: an investigation of the U.S. wood treating industry
… was used to investigate the value perceptions of softwood lumber treaters in the United States. Conjoint measurement techniques were used to estimate the trade-offs treaters make between quality enhancing attributes and price. Five intrinsic lumber attributes and five service attributes were …
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Wood Use Trends in the Pallet and Container Industry
… 4.41 billion was hardwood and 2.13 billion was softwood. It was further estimated that 3.7 billion board feet of the hardwood was purchased or processed as lumber and cants, and an additional 707 million board feet as hardwood parts. Approximately 51% of the hardwood consumed was a mixture of …
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An analysis of hardwood lumber and other wood-based materials use in the wood furniture industry
… was expected to increase 13% from 1990 to 1992. Softwood lumber used in wood furniture in 1990 was estimated at over 839 million board feet. A 6% increase in softwood lumber use was expected from 1990 to 1992. Red oak was the most commonly used hardwood species and southern pine was the most used …
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Wood-based material use in the United States pallet and container industry
… estimate the total volume of hardwood lumber, softwood lumber, and wood-based panels used by the industry in 1991, (2) estimate lumber use by species category within the industry, and (3) predict shifts in the volumes of wood-based materials used by the U.S. pallet and container industry. Data …
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Characterization of the White-rot Fungus, Phanerochaete carnosa, through Proteomic Methods and Compositional Analysis of Decayed Wood FibreCharacterization of the White-rot Fungus, Phanerochaete carnosa, through Proteomic Methods and Compositional Analysis of Decayed Wood Fibre
… almost exclusively from fallen coniferous trees (softwood). While several studies describe the lignocellulolytic activity of the hardwood-degrading, model white-rot fungus Phanerochaete chrysosporium, the lignocellulolytic activity of P. carnosa has not been investigated. An underlying hypothesis …
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THE CHARACTERIZATION AND UTILIZATION OF BARK AS A FLORICULTURE GROWING MEDIUM
… of bark of northern hardwood and softwood tree species from two New Hampshire sources were physically and chemically characterized. Measurements included N, P, K, Ca, Mg, pH, and total soluble salts on growing media and spectrographic analyses of plant leaves.</p><p>Observations, …
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Study of West Virginia wood industry roundwood consumption in 1999
… decade in the market for construction material. Softwood species and soft hardwood species are the preferred forest resources for manufacturing these products. Reduction in available softwood forest resources from the Western states has forced a shift to use of more soft hardwood species in the …
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Propagation of Cupressus lusitanica by cuttings: A thesis submitted in partial fulfilment of the requirements for the National Diploma in Horticulture (Hons.) of the Royal New Zealand Institute of Horticulture
… of Cupressus lusitanica cuttings. Hardwood, softwood and half-ripe cuttings were used in Experiments 1-3 respectively. The cuttings were placed in a polythene tent and under mist, with and without bottom heat. Bottom heat appeared to be necessary and polythene tent propagation was found to be …
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A Physiological Investigation of Adventitious Root Initiation in the Genus Acer
… and A. saccharinum were easily rooted from softwood stem cuttings. Acer saccharum was moderately difficult to root from cuttings. Acer griseum was the most difficult-to-root species in this study. Optimum IBA treatments for root initiation were determined for these five species.
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Material use, product profile and channels of distribution in the U.S. wood furniture industry
… of hardwood lumber, 865 million board feet of softwood lumber, 1.3 billion square feet of particleboard (3/4" basis), and 370 million square feet of medium density fiberboard (3/4" basis). Further, an estimated 268 million square feet of softwood plywood (3/8" basis), 1025 million square feet …
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Wood materials use in the U.S. cabinet industry, 1991-1993
… heavily utilized for wood cabinet production. Softwood lumber, softwood plywood, and oriented Strandboard were used in limited volumes. Of lumber used for cabinet production, red oak was the most popular species. High grades of hardwood lumber were preferred by both stock and custom cabinet …
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Characteristics and mechanisms of atrazine sorption to biochar for land remediation
… Research Centre , which were produced from softwood pellets (SWP), wheat straw pellets (WSP), miscanthus straw pellets (MSP), rice husk (RH) and oil seed rape (OSR) each at pyrolysis temperatures of 550°C and 700°C (excluding OSR at 700°C). The sorption mechanisms controlling atrazine …
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