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Tesi sul tema "Lumber"

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1

Tomporoski, Alexandre Assis. "O pessoal da Lumber!" Florianópolis, SC, 2006. http://repositorio.ufsc.br/xmlui/handle/123456789/89306.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em História.<br>Made available in DSpace on 2012-10-22T19:16:48Z (GMT). No. of bitstreams: 1 242374.pdf: 4560310 bytes, checksum: 86f4ebd3c744a6816dfd4a3b033ab430 (MD5)<br>Esta dissertação objetiva analisar as relações que envolveram o viver dos trabalhadores da Southern Brazil Lumber and Colonization Company, suas origens, formação e atuação na região do planalto norte de Santa Catarina, especialmente entre os anos de 1910 a 1929. Para tanto, serão analisadas algu
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2

King, Helene. "The economic history of the Long-Bell Lumber Company." Lake Charles, La. : McNeese State University, Frazar Memorial Library, Dept. of Archives and Special Collections, 2008. http://library.mcneese.edu/depts/archive/FTBooks/king.htm.

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3

Roch, Alain. "Les flux de transport du bois et des pâtes et papiers au Saguenay-Lac-Saint-Jean-Chibougamau : les effets de la distance entre les aires de coupe et les usines de transformations [sic] /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2005. http://theses.uqac.ca.

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4

Cunliffe, Richard I. (Richard Ian) Carleton University Dissertation Engineering Civil. "Proof-loading effects on lumber." Ottawa, 1988.

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5

Ese-Etame, Roncs. "Impact of Ellipticality on Lumber Grade and Volume Recovery For Red Oak Logs." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33429.

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Abstract (sommario):
Hardwood sawmills must become more efficient to remain competitive. One way to increase efficiency and competitiveness is to increase the value or lumber volume produced from logs. While methods to maximize value and volume recovery exist for round logs, little information exists on how to maximize these outcomes for logs with ellipticality. The goal of this research was to determine the impact of low and high degrees of ellipticality on green lumber grade and volume recovery for red oak logs under current sawing methods. Logs of low and high ellipticality were selected and processed at four A
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6

Nistal, Franca Frederico Jose. "Nondestructive Evaluation of Southern Pine Lumber." Thesis, Mississippi State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10288887.

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<p> Southern pine (SP) lumber is the primary softwood material in the United States. The main procedure during lumber grading process is the identification of the strength reducing characteristics that impacts the modulus of rupture (MOR). Non-destructive evaluation technology can be used to identify higher-stiffness material. This study investigated the use of vibration methods to evaluate the mechanical properties of southern pine lumber. Significant correlations between the properties determined by non-destructive techniques and the static MOE were found. No strong correlations were found f
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7

Ho, Wai-hung Daniel, and 何偉雄. "Genetic study of lumber disc degeneration." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841215.

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8

Strong, Neil. "Fungal deterioration of sawn softwood lumber." Thesis, University of Portsmouth, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285528.

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The colonisation of freshly sawn Corsican pine lumber by sapstain and mould fungi was investigated at a sawmill in Hampshire, UK. Three repeat trials encompassing the different seasons of the year were carried out over two years. Results show that fungal colonisation of sawn lumber is dependent on the effect of time of year. Sawlogs were stored for different intervals up to 16 weeks before conversion to boards. Boards were then stored for up to 12 weeks after milling and sampled every 4 weeks to determine the effect of timber ageing on fungal colonisation up to 28 weeks after felling. The meta
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9

Ho, Wai-hung Daniel. "Genetic study of lumber disc degeneration." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42841215.

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10

Craig, Bruce A. "Comparison of creep/duration of load performance in bending of Parallam® parallel strand lumber to machine stress rated lumber." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26194.

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A comparison of the creep/duration of load (DOL) performance of a new structural wood composite material called Parallam® parallel strand lumber (PSL) to two grades of machine-stress-rated (HSR) Douglas-fir lumber is presented in this thesis. Evaluation of the creep/DOL performance was made on nominal 2x4 members under constant bending stress at three stress levels. A total of 306 test specimens were evaluated for a 15-1/2 month time period. The analysis suggests that the duration of load effect for Parallam PSL was consistent with the Madison curve for the time period studied while the MSR D
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11

Neff, John Michael. "Organic emissions during oven drying of wood." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10242009-020200/.

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12

Filgueira, Amorim Franca Tamara Suely. "Southern Yellow Pine In-Grade Lumber Evaluation." Thesis, Mississippi State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10289581.

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<p> The southern pine species group is the main softwood resource used in the U.S, and the majority of southern pine is used in lumber production. The use of lumber in structural purpose requires feasible strength and stiffness grading method ensuring characteristics allowable stress values. The stiffness and strength of most of southern pine lumber is assessed using visual grading system. The objective of this study was to evaluate a production weighted sample of 2 &times; 4, 2 &times; 6, 2 &times; 8, and 2 &times; 10 No. 2 grade southern pine lumber collected across its geographic range. The
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13

Rollins, Lynnette S. "Revised lumber yard cost estimator work sample." Online version, 2000. http://www.uwstout.edu/lib/thesis/2000/2000rollinsl.pdf.

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14

Terry, Angela M. "Gripped end effect in tensile proof testing dimension lumber." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43057.

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A testing procedure was developed to measure the effectiveness of tension proof testing, given that the gripped ends of the lumber do not fully experience the proof stress during a tension proof test. First the middle portion of each 14-foot 2X6 No 2 KDIS Southern Pine lumber specimen was tension proof tested, as if the pieces were only 10 feet long. Then the pips of the testing machine were moved out so that the entire middle 10-foot, section including the portions that had been gripped during the initial proof test would be fully stressed during a second tension test Some specimens, referre
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15

Higgins, Edward Donald. "The strength of bonded wood strand composites." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30613.

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A method for modelling the strength of bonded wood strands which are oriented principally in one direction is proposed. The hypothesis tested was that strand grain orientation data, fitted to a von Mises probability distribution, could be used in an analysis for estimating the potential tensile strength of an ideally bonded composite. The strand strength, resolved at any loading angle with respect to the principal composite strand orientation axis, was multiplied by the distribution probability at that angle. When integrated over all angles, this product yielded the mathematical expectation of
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16

Dougherty, Colin. "Improving lumber recovery of low-quality hardwoods via finger-jointing technologies." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10281.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains ix, 93 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 75-79).
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17

Brown, David W. "Why governments fail to capture economic rent : the unofficial appropriation of rain forest rent by rulers in insular southeast Asia between 1970-1999 /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/10754.

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18

Syron, William Donald. "Strain Rate-Dependent Behavior of Laminated Strand Lumber." Fogler Library, University of Maine, 2010. http://www.library.umaine.edu/theses/pdf/SyronWD2010.pdf.

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19

Shahverdi, Mahdi. "Kiln drying optimization for quality hem-fir lumber." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/56286.

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Abstract (sommario):
Western hemlock is a dominant coastal species in British Columbia, Canada. This species is commonly marketed with amabilis fir as Pacific Coast Hemlock or hem-fir. Hem-fir is difficult to dry, mostly because of the existence of wetwood and large initial moisture content variation. The dried lumber will likely end up with a large final moisture content difference resulting in increased drying defects and decreased lumber quality and factory productivity. In this study, application of green chain moisture-based sorting coupled with drying schedule modifications were considered as ways to improve
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20

Lynch, Robert W. "The Canada-United States trade in softwood lumber." Thesis, University of Ottawa (Canada), 1997. http://hdl.handle.net/10393/4231.

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The thesis examines a long-standing North American trade dispute. At the centre of the conflict is the allegation by the U.S. softwood lumber industry that low provincial government stumpage fees constitute a subsidy to the Canadian softwood lumber industry. The thesis evaluates the subsidy allegation in the context of the British Columbia forest sector. The amount of Ricardin rent captured by the B.C. forest industry is decisive evidence leading to the conclusion that there is no provincial government subsidy to the softwood lumber industry. The argument is supported by evidence that lower st
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21

Chuo, Terence Chung Biau. "Fire Performance of Connections in Laminated Veneer Lumber." Thesis, University of Canterbury. Civil Engineering, 2007. http://hdl.handle.net/10092/1131.

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The embedment strength of timber with respect to exposure temperature has not been widely studied. Some studies have suggested that the timber totally loses its embedment strength when the timber temperature reaches 300℃. This research concentrates on the embedment strength study of Laminated Veneer Lumber (LVL) timber product exposed to elevated temperatures up to 250℃ using singly bolted connections. Experiments showed that the embedment strength of LVL decreased at a constant rate from 0.08 kN/mm² to 0.025 kN/mm² once the bolt temperature increased from ambient conditions. The embedment str
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22

Swiatlo, Jeffrey A. "Analysis of shear damage to southern pine lumber." Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53188.

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This study was conducted as a second part in the shear damage research project at Virginia Tech. The objectives were to verify the results obtained by Gallagher (1984) in the first study under normal mill operations as well as develop a method to compare and evaluate the extent of shear damage in relation to other defects present in southern pine lumber. This was accomplished through two sawmill studies and two kiln cart surveys performed in different geographic locations. Visible indicators such as stump-pull that are used to determine shear damage extent are often misleading. Stump-pull, u
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23

Hansen, Eric. "Empirically derived dimensions of quality for softwood lumber." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/37255.

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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 received. Respondents rated the importance of product and service characteristics to quality. These characteristics were based on dimensions of product quality developed by Garvin (1984) and dimensions of service quality developed by Parasuraman et aI. (1988). A total of 80 product and service qua
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24

Boakye-Yiadom, Kaleem. "Selected anatomical, extractive and physical wood properties of Cylicodiscus gabunensis (Harm) : a tropical timber species /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3036806.

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25

Daniels, Jean M. "An economic assessment of the lumber manufacturing sector in western Washington /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/5456.

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26

Haraldsson, Kjell. "Tradition, regional specialisering och industriell utveckling sågverksindustrin i Gävleborgs län /." Uppsala : Academiae Ubsaliensis : Distribution, Kulturgeografiska institutionen vid Uppsala universitet, 1989. http://catalog.hathitrust.org/api/volumes/oclc/22183323.html.

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27

Cai, Yanling. "Statistical methods for relating strength properties of dimensional lumber." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54404.

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Abstract (sommario):
We present a novel approach for predicting one lumber strength property from another, each being measured destructively. The objective is to reduce the cost of lumber monitoring programs, by measuring one of the properties and predicting the other. To reach the objective, we review single proof load design (SPLD) proposed to assess dependence between two jointly normally distributed random variables X and Y that cannot be observed simultaneously. The SPLD tests specimens in one mode X up to a determined load (proof loading), and the survivors are tested to failure in a second mode Y. To resolv
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28

van, Dyk Hermanus H. "Ultrasonic Evalutation of Defects and Moisture Content of Lumber." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/vanDykHH2004.pdf.

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29

Vadeboncoeur, Natalie Ivonne. "Two-dimensional separate-sided surface height profiling of lumber." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/780.

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Abstract (sommario):
Raw material accounts for a large proportion (approximately 75 percent) of a sawmill’s operating costs. However, about 15 percent of raw material ends up as low valued sawdust and planer shavings due to inaccurate cutting. Sizable financial benefits can be realized through maximizing conversion of raw material into valuable solid wood. Advanced process control in a sawmill can help achieve straighter cuts closer to final product dimensions and reduce loss of valuable raw material. A novel and practical method for enhanced process control in a sawmill is presented. A laser arrangement consisti
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30

Lau, Puong Hock. "Fire Resistance of Connections in Laminated Veneer Lumber (LVL)." Thesis, University of Canterbury. Civil Engineering, 2006. http://hdl.handle.net/10092/1089.

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The fire resistance of timber connections is relatively unknown in the construction and design industries even though they are widely used. This research focuses on the fire resistance of nailed, screwed, bolted and self-drilling doweled connections in laminated veneer lumber (LVL) timber. These connections have been found to have high strength under cold or normal temperature but hardly achieved 30 minutes fire rating in the furnace tests. To establish the performance of connections, an investigation was carried out on the compressive strength of connections by having compressive tests using
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31

Adhikari, Sailesh. "Assessment of Cross Laminated Timber Markets for Hardware Lumber." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/103013.

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The goal of this study was to assess the potential of using hardwood lumber in CLT manufacturing. The goal was achieved by addressing four specific objectives. The first objective was to collect CLT manufacturers' perspectives for using hardwood lumber in the current manufacturing setup. The second objective was to determine hardwood sawmills' current ability to produce structural grade lumber (SGHL) from low value logs as a product mix through a survey of hardwood lumber producers in the US. The third objective was to conduct a log yield study of SGHL production from yellow poplar (YP) logs t
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32

Alderman, Delton R. Jr. "An Investigation into Attitudes towards Recycling CCA Treated Lumber." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/27506.

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This research examines the effects of evaluations, beliefs, subjective norms, and perceived behavioral control on the contractor's decision intention to recover used CCA lumber. The purpose of this research was to determine the factors that affect recovery. This research proposes that a contractorâ s decision intention to recover is affected by evaluations, beliefs, subjective norms, and perceived barriers to recovery. The study included a mail questionnaire that was sent to over 2,800 contractors. The questionnaire was used to collect both demographic data and an evaluation of the fact
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33

Shepley, Brian Patrick. "Simulating Optimal Part Yield from No. 3A Common Lumber." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/36226.

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The percentage of low-grade material composing the annual hardwood lumber production in the U.S. is on the rise. As a result, finding markets for low-grade and low-value lumber has been identified as a top priority by researchers and industry associations. Computer simulation has been used by the manufacturing industry for several decades as a decision support tool. Simulation programs are commonly used and relied on by researchers and the industry alike to conduct research on various aspects of the rough mill from processing to recovery efficiency. This research used the ROMI-RIP and ROMI
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34

Leonard, Henry Taylor. "Time-Based Manufacturing System Design for Softwood Lumber Production." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/35860.

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Manufacturing industries in the United States continue to experience increasing pressure from foreign competition. Through decreasing product lead time, U.S. manufacturers can achieve a sustainable competitive advantage. Southern yellow pine manufacturing is an example of an industry that can benefit from product lead time reduction. This project involved a case study of a southern yellow pine lumber manufacturer. Value stream mapping was used to evaluate the current lead time for the lumber manufacturer as well as design future state systems. Current state evaluation discovered an averag
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35

Harrison, S. Kate. "Comparison of Shear Modulus Test Methods." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/31772.

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This research compared the results of three tests: ASTM D 198 torsion, ASTM D 198 three-point bending and the five-point bending test (FPBT) using machine-stress-rated (MSR) lumber and laminated veneer lumber (LVL) to determine if the shear properties evaluated by the different test methods were equivalent. Measured E:G ratios were also compared to the E:G ratio of 16:1 commonly assumed for structural wooden members. <p>The average shear moduli results showed significant differences between the three test methods. For both material types, the shear moduli results determined from the two standa
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36

Finkenbinder, David Edward. "An Experimental Investigation of Structural Composite Lumber Loaded by a Dowel in Perpendicular to Grain Orientation at Yield and Capacity." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/35055.

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The research summarized by this thesis was comprised of an experimental analysis of beams loaded perpendicular to grain at midspan by a bolted double-shear laterally-loaded connection. Connection specimens were loaded monotonically until capacity was reached. Variables of consideration included the loaded edge distance of the connection main member, the span:depth ratio of the main member, and the main member material. Southern pine machine-stress-rated (MSR) lumber, laminated veneer lumber (LVL), and parallel strand lumber (PSL) were the three material types included in the program. Exp
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37

McGee, Brian Gerard. "A time-based computer controlled dry kiln system." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/90975.

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A computer controlled dry kiln system, designed and assembled at Virginia Tech, was used in a comparison study of end check damage and acoustic emission count rate for red oak wood samples using two variations of a drying schedule based upon a standard 4/4 red oak drying schedule (T4D2). Time was the controlling variable for the system. In run A, the lumber samples were dried using eight large step changes in temperature and relative humidity. In run B, a similar charge was dried over the same time period using 48 smaller step changes in temperature and relative humidity. The lumber samples th
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38

Benac, David T. "This land is all terrible rough : a history of access to forest resources in Carter County, Missouri /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3099609.

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39

Regalado, Carmen de Castro. "Optimization of edging and trimming operations for red oak lumber." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10242009-020208/.

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40

Yoder, Jonathan Keith. "The effects of spotted owl litigation on national lumber markets." Thesis, Montana State University, 1994. http://etd.lib.montana.edu/etd/1994/yoder/YoderJ1994.pdf.

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Spotted Owl litigation has led to substantial fluctuations in Pacific Northwest public timber availability from 1987 to the present. A theoretical and two distinct empirical models using monthly data are developed to understand and test the potential of this litigation to affect the national market for lumber. The results of an econometric framework indicate that Northwest public timber fluctuations have affected the Northwest lumber industry, but provide no evidence that the effects are felt in other regions of the United States. A time-series approach indicates that the Northwest lumber mark
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41

Prevost, Bradley Jean. "Detection of ambrosia beetle holes in lumber using machine vision." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0007/MQ45359.pdf.

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42

Van, Zeeland Ineke Maria. "Modelling of dimension lumber in axial compression at elevated temperatures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ57752.pdf.

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43

Ardalany, Manoochehr. "Analysis and design of Laminated Veneer Lumber beams with holes." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2013. http://hdl.handle.net/10092/7674.

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Abstract (sommario):
Timber has experienced new interest as a building material in recent times. Although traditionally in New Zealand it has been the main choice for residential construction, with recently introduced engineered wood products like Laminated Veneer Lumber (LVL), the use of timber has developed to other sectors like commercial, industrial, and multi-story buildings. The application of timber in office and commercial buildings poses some challenges with requirements for long span timber beams yet with holes to pass services. The current construction practice with timber is not properly suited for the
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44

Espinoza, Omar A. "Developing an Evaluation Program for Lumber Drying Operations in Bolivia." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/32375.

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Abstract (sommario):
The Bolivian forest products industry has experienced substantial growth during the last ten years. Exports of value-added products have largely replaced logs and green lumber, and raw materials for wood products have shifted to lesser used species. Important investment has taken place in lumber drying capacity, which unfortunately was not always accompanied by sound drying practices. Several non-governmental organizations, with U.S. financial aid, are currently supporting the industry with technical assistance. This project assists these efforts by assembling much needed information regarding
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45

Van, Zeeland Ineke Maria 1968 Carleton University Dissertation Engineering Civil and Environmental. "Modelling of dimension lumber in axial compression at elevated temperatures." Ottawa.:, 2000.

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46

Scheepers, Gerhardus C. "Liquid water flow and discolouration of wood during kiln drying /." Link to the online version, 2006. http://hdl.handle.net/10019/1189.

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47

Brodie, Graham. "Microwave timber heating and its application to solar drying /." Connect to thesis, 2005. http://eprints.unimelb.edu.au/archive/00000971.

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48

Driscole, Robert E. "Employment opportunities and skills necessary for entry-level employment in the timber industry." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3304.

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Thesis (M.S.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains vii, 35 p. Vita. Includes abstract. Includes bibliographical references (p. 21).
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49

Trask, Keith Matthew. "Management Styles of Lumber Mill Managers in the Northern United States." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/TraskKM2008.pdf.

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50

Fitouhi, Mohamed Chahir. "Cycle time in the lumber industry supply chain : diagnostics and analysis." Master's thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2006/24135/24135.pdf.

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