Dissertations / Theses on the topic 'Wood'
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Suttie, Edward Dominic. "The light stabilisation of wood and wood coatings." Thesis, University of Sussex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427032.
Full textBraun, Moritz. "Simply Wood : Design of All-Wood Furniture Joints." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-100435.
Full textBarulich, Nadia Stosija. "Magic Wood." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/cmc_theses/1088.
Full textCarlsson, Peter. "Optimized wood manufacturing with main focus on wood drying." Doctoral thesis, KTH, Building Sciences and Engineering, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2940.
Full textOptimization is performed on two applications from woodmanufacturing, with the main focus on wood drying. As anintroductory study of optimization, the design of a modernracing ski is investigated. The skating ski, which is partlybuilt up by wood, is optimized against maximum stiffness withthe restriction of a limited upper weight.
Wood drying is treated as an optimization problem. The totaldrying time is minimized, at the same time as restrictions onmoisture content, stresses and deformations are considered. Theoutcome of the optimization is drying schedules which describethe environmental air dry temperature and relative humidity asa function of time. Design variables during optimization arethe length of the individual time steps and the air drytemperature and relative humidity connected to each time step.Convex approximation methods are used for optimization (the socalled MMA-method, Method of Moving Asymptotes). Necessarygradients are calculated with finite differences.
Optimization is performed with one- and two-dimensional (1Drespectively 2D) moisture transport models. In optimizationwith 1D analysis, moisture content and stresses are calculatedalong a line in the middle of the board, and with 2D analysisthe calculations are made in a numerical grid which covers thecross section of the board. In both cases, deformations arecalculated as the global cup deformation. All structuralcalculations are made with a FEM-program (FEM = Finite ElementMethod) where the whole cross section is modelled with onesingle element. The moisture calculations are made with aFEM-program in the 1D-case, and with a FD-program (FD = FiniteDifference) in the 2D-case. The transient solutions of thestructural and moisture problems are obtained with a timestepping procedure. It is assumed that the moisture problem canbe solved separately from the structural problem, i.e. that thestress and strain distribution during drying has no influenceon the moisture transport.
The wood material is modelled as an orthotropic materialwith main directions in the radial, tangential, andlongitudinal directions. Most material parameters vary with themain direction, the temperature and the moisture content. Thetotal strain rate in the structural calculation is assumed tobe the sum of the elastic strain rate, the moisture inducedstrain rate and the mechano-sorptive strain rate. It ispossible to vary the dimensions of the board and the growthring orientation (i.e. the pith position). In thetwo-dimensional model, it is also possible to simulatedifferent distributions of sapwood and heartwood in the crosssection.
Numerical examples are performed with both 1D and 2Danalysis. In the last example with 2D analysis, optimization isperformed as distributed computing with computers in anetwork.
The thesis shows that optimization methods work well forwood drying. Modern optimization routines offer powerful toolswhen constructing reliable drying schedules. The knowledgeobtained in this work can be used to refine existing dryingschedules, to develop schedules for new quality demands or tocreate schedules for drying kilns with improvedperformance.
Keywords:Optimization, wood drying, distributedcomputing, drying schedules, one-dimensional, two-dimensional,stresses, deformations, moisture content.
YEH, TING-FENG. "Chemical and structural characterizations of juvenile wood, mature wood, and compression wood of loblolly pine (Pinus taeda)." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-11022005-202923/.
Full textDuchow, Kirk J. "Dielectric characterization of wood and wood infiltrated with ceramic precursors." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19960.
Full textKing, Bryan L. "Wood deck bridges-stress laminated wood panels on steel beams." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1860.
Full textTitle from document title page. Document formatted into pages; contains xi, 157 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 96).
Nishimoto, Atsushi. "Ecology of sunken wood community in the ocean." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188518.
Full textBirkhimer, Bradley Charles. "Wood ash glaze." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4573.
Full textTitle from document title page. Document formatted into pages; contains iv, 27 p. : col. ill. Vita. Includes abstract. Includes bibliographical references (p. 25).
Larsen, Ingrid Marie Hjellset. "Norwegian Wood Innovation." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10219.
Full textTerrengmodellering i 3D er i dag en mye brukt måte å fremstille landskap på. Slike modeller kan man se i utallige dataspill, animasjonsfilmer, og geologiske modeller. Den vanligste måten å fremstille et 3D terreng på er ved bruk av kotekart. Mønsteret i en treplate kan minne mye om slike koter, og ved segmentering av mønsteret kan dette resultatet behandles på samme måte som et ordinært kart. Denne rapporten beskriver hvordan en finerplate kan bli ført fra treplate til trelandskap ved hjelp av generelle metoder innenfor området for bildebehandlig og 3D modellering. For sluttproduktet blir to løsninger fremstilt. Den ene er et selvlaget program kalt 3Dtre som viser modellen ved hjelp av Delauney triangulering, den andre er basert på bilblioteket SIM scenery og programvare fra Systems in Motion.
Stokes, Agnes. "Wire water wood /." Online version of thesis, 1987. http://hdl.handle.net/1850/11466.
Full textVice, President Research Office of the. "Wood Wide Web." Office of the Vice President Research, The University of British Columbia, 2006. http://hdl.handle.net/2429/2701.
Full textÖhman, Micael. "The measurement of compression wood and other wood features and the prediction of their impact on wood products /." Luleå, 2001. http://epubl.luth.se/1402-1544/2001/42/index.html.
Full textScheepers, Gerhardus C. "Liquid water flow and discolouration of wood during kiln drying /." Link to the online version, 2006. http://hdl.handle.net/10019/1189.
Full textHildén, Lars. "The characterization of wood and wood fibre ultrastructure using specific enzymes /." Uppsala : Dept. of Wood Science, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/s328.pdf.
Full textShope, Mitchell G. (Mitchell Grafton). "Strength characterization of wood to wood connections using stress field analysis." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104245.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 69-70).
Minimizing construction cost and material usage are two dominant aspects in structural design. As a building material, timber presents a cheap, renewable option. However, current practice favors steel connections for wood structures. Wood to wood connections offer a solution to the minimization of steel connections. While some wood-only connections are referenced in timber codes, small modifications to these designs as well as a multitude of other possible connection types are yet to be characterized. This thesis analyzes wood to wood joints with stress fields. Stress field analyses may quickly and easily enable the design of timber joints and characterize the maximum loads they can handle. First, this thesis surveys and interconnects the theoretical concepts of wood behavior, plastic design, stress fields, and graphic statics. Additionally, this thesis tests these relationships empirically by load testing a designed double-birdsmouth connection and observing inconsistencies between the theoretical stress field model, code-required strength, and physical tests. The thesis shows that stress fields are a suitable design approach when considering the design of this wood-wood joint. The results also show that careful consideration must be attributed to the material properties of the wood as well as the possible failure modes. This thesis finally shows that shear failure should be checked in addition to compressive and tensile failure and provides a quick method to ensure a safe design.
by Mitchell G. Shope.
M. Eng.
Ren, Dakai. "Moisture-Cure Polyurethane Wood Adhesives: Wood/Adhesive Interactions and Weather Durability." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/29866.
Full textPh. D.
Fang, Demi L. "Timber joinery in modern construction: Mechanical behavior of wood-wood connections." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127868.
Full textCataloged from the official PDF of thesis.
Includes bibliographical references (pages [107]-112).
Timber joinery is a method of geometrically interlocking timber elements prevalent in historic cultures around the world, including North America, Europe, and East Asia. The use of joinery as structural connections faded with the development of metallic screws and nails. Two recent developments offer the opportunity to revive this historic timber connection type: 1) the increasing desire to reduce embodied carbon in buildings by replacing more components with timber as a low-carbon structural material, and 2) recent digital fabrication capabilities which enable the precise milling of complex geometries as an alternative to the time- and labor-intensive handiwork required previously. How can joinery connections be designed in modern structural joints? Can we quantify the sustainability advantage of using these all-timber joints in lieu of the modern convention of metallic fasteners? This thesis addresses both questions as applied to the Japanese Nuki joinery type, though the workflows may be applied to any joinery geometry. First, the rotational stiffness of the Nuki joint is characterized and cross-verified using multiple methods. Second, the embodied carbon of a gravity frame using Nuki joints is compared to that of a gravity frame using conventional metallic fasteners. The use of Nuki joints not only eliminates the use of steel and aluminum but also provides rotational stiffnesses that enable smaller beam sections to be used. It is shown that gravity frames designed with Nuki joints could reduce embodied carbon by over 70% compared to gravity frames designed using conventional beam hanger connections. The findings make a case for all-timber joinery connections to be implemented as a sustainable alternative to conventional metallic connections used in modern timber construction.
by Demi L. Fang.
S.M. in Building Technology
S.M.inBuildingTechnology Massachusetts Institute of Technology, Department of Architecture
Castleberry, Nikole Lee. "Food habits of the Allegheny woodrat (Neotoma magister)." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1413.
Full textTitle from document title page. Document formatted into pages; contains viii, 99 p. : col. maps Vita. Includes abstract. Includes bibliographical references.
Sweeney, Ian James. "Fossil wood from the Moreno Hill Formation: Unique expressions of wood mineralization and implications for the processes of wood preservation." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446097.
Full textMårtensson, Annika. "Interaction between moisture and stress in wooden materials." Lund, Sweden : Lund Institute of Technology, Division of Structural Mechanics, 1988. http://catalog.hathitrust.org/api/volumes/oclc/21753821.html.
Full textChang, Wei-Ping. "Ultrasound-assisted surface-modification of wood particulates for improved wood/plastic composites." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5824.
Full textTitle from document title page. Document formatted into pages; contains iv, 87 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 83-86).
Shebani, Anour N. "The effect of wood composition and compatibilisers on polyethylene/wood fibre composites." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5270.
Full textENGLISH ABSTRACT: The effects of the macromolecular composition and content of different wood species on the properties of wood-polymer composites (WPCs) achieved when using poly(vinyl alcohol-co-ethylene) (EVOH) as a compatibiliser and linear low density polyethylene (LLDPE) as a matrix, were investigated. Four wood different species (A. cyclops (acacia), E. grandis (eucalyptus), P. radiata (pine) and Q. alba (oak)) with different macromolecular composition and contents and average particle lengths were used. WPCs filled with these species and WPCs filled with the same species but without extractives were prepared using 10% wood content and different amounts (0, 2, 5, 7 and 10%) of EVOH. An EVOH content of 7% was found to be optimum. Unextracted woods produced WPCs with higher mechanical properties and better resistance to ultraviolet (UV) degradation, while the extracted woods produced WPCs with lower water absorption (WA) rates and better thermal stability. Use of unextracted A. cyclops resulted in composites with superior mechanical and thermal properties compared with the other unextracted species, most probably due to its higher cellulose and lignin contents and a favourable average wood particle length (0.225 mm). A. cyclops composites also had higher WA and thickness swelling (TS) rates most likely due to the greater number of free hydroxyl groups present in these composites because of higher cellulose content. Composites containing wood species with a high lignin and extractive content, such as A. cyclops and Q. alba, exhibited higher resistance to UV degradation. Poly(vinyl alcohol-co-ethylenes) (EVOHs) with different ethylene content (27, 32, 38 and 44%) and A. cyclops with different particle sizes (180, 250 and 450 ìm) were used to prepare WPCs with 10% A. cyclops content. The effect of the contact area between the A. cyclops particles and LLDPE achieved when using EVOHs as compatibilisers on the properties of WPCs was also investigated. The greatest improvements in the mechanical and thermal properties of composites made with A. cyclops with particle size 180 ìm were obtained when EVOH with 44% ethylene content was used. The greatest improvements in the composites made with A. cyclops with particle size 250 ìm were achieved when EVOH with 38% ethylene content was used. Composites made with A. cyclops with particle size 450 ìm exhibited better properties when EVOH with 27% ethylene content was used. All the composites that had better mechanical and thermal properties, also exhibited better compatibility and interface adhesion. Two successful approaches were used to impart more attractive ecological and economical advantages to WPCs. In the first approach, (0, 2, 5 and 7%) degraded LLDPE was used as a compatibiliser in WPCs at levels of 10, 30 and 50% wood content. The resulting mechanical properties, such as tensile strength and hardness, thermal and morphological properties of the compatibilised composites were slightly higher than those of noncompatibilised composites and virgin LLDPE. Elongation at break and impact properties of the compatibilised composites were lower than in virgin LLDPE, but higher than in noncompatibilised composites. In the second approach, polyethylene (PE) and various functionalised polyethylenes (PEs) were synthesised by copolymerising ethylene and 10-undecen-1-ol using a soluble metallocene/methylaluminoxane catalyst at room temperature. The incorporation of functional groups increased with increasing comonomer content. WPCs with 10 and 30% wood content were prepared. The composites prepared with functionalised PEs had better mechanical, thermal and morphogical properties than the composites prepared with PE. Composites made with functionalised PE with higher hydroxyl groups content exhibited better properties than composites made with functionalised PE with lower hydroxyl groups content. Composites with 10% wood content exhibited better properties and performance than composites with 30% wood content.
AFRIKAANSE OPSOMMING: Die gevolg van die makromolekulere samestelling van verskillende houtspesies op die eienskappe van hout-polimeer saamgestelde materiale (HPS) wanneer poli(viniel alcohol-ko-etileen) (EVOH) as versoeningsmiddel gebruik word saam met linieere lae digtheid poli(etileen) (LLDPE) as matriks is ondersoek. Vier houtspesies (A. cyclops (acacia), E. grandis (eucalyptus), P. radiata (pine) and Q. alba (oak)) met verskillende makromolekulere samestelling and partikelgrootte-verspreiding is gebruik in die studie. HPS materiale is berei met hierdie vesels, beide voor en na ekstraksie van die houtpartikels met onderskeidelik warm water en oplosmiddels (alleen en in kombinasie). In hierdie HPS materiale is 10% hout gebruik en 0, 2, 5, 7 en 10% EVOH. 'n EVOH inhoud van 7% is as optimum bepaal. Houtpartikels voor ekstraksie het HPS materiale met beter meganiese eienskappe en beter weerstand teen UV bestraling, terwyle partikels wat ekstraksie ondergaan het HPS materiale met laer water-absorpsie en beter hitte-stabiliteit to gevolg gehad het. Die gebruik van ongeekstraheerde A. cyclops het samegestelde materiale met die beste meganiese en termiese eienskappe tot gevolg gehad in vergelyking met die ander houtspesies (voor ekstraksie), as gevolg van die hoer sellulose en lignien inhoud van die spesie, sowel as 'n voordelige partikelgrootte-verspreiding. A. Cyclops saamgestelde materiale he took hoer waterabsorpsie (WA) en dikte-swelling (DS) tempos gehad, weens die groter hoeveelheid vrye hidroksielgroepe teenwoording in die materiale, direk in verwantskap met die sellulose-inhoud. Saamgestelde materiale met 'n hoe hoevellheid lignien en ekstraheerbare materiale (A. cyclops and Q. alba) het beter weerstand teen UV-degradasie geopenbaar. Verskillende poli(viniel alkohol-ko-etileen) polimere (EVOHs) met wisselende etileen-inhoud (27, 32, 38 en 44%) en A. Cyclops met verskillende partikel-groottes (180, 250 en 250 µm) is gebruik om HPS materiale met 10% hout te vervaardig. Die gevolg van die kontak-area tussen die houtpartikels en die LLDPE wanneer EVOHs as versoeningsmiddel gebruik is, is ook ondersoek. Die beste verbetering in die meganiese en termiese eienskappe van die saamgestelde materiale met A. cyclops met partikel-grootte 180 µm is gekry met EVOH met 44% etileen-inhoud, terwyl die beste resultate met 250 µm partikels verkry is met 'n EVOH met 38% etileen, en met 27% etileen in die geval van die 450 µm partikels. Twee benaderinge om meer aantreklike ekologiese en ekonomiese eienskappe by die HPS materiale te bewerkstellig was suksesvol. In die eerste geval is gedegradeerde LLDPE as versoeningsmiddel gebruik. Die resulterende meganiese eienskappe van die HPS materiale met LLDPE as versoeningsmiddel was beter as die HPS mateirale daarsonder. Samegestelde materiale met 10, 30 en 50% hout is vervaardig. Die trekverlenging by die breekpunt sowel as die impaksterkte van die HPS materiale was laer as LLDPE alleen, maar beter as die nie-versoende HPS materiale. In die tweede benadering is polietileen (PE) en gefunksionaliseerde PE gesintetiseer deur etileen en 10-undekeen-1-ol te koplimeriseer met ‘n oplosbare metalloseen/metiel alumoksaan katalis. Die hoeveelheid funskionele (OH) groepe is verhoog deur toenemend ekomonommer-inhoud. HPS materiale met 10 en 30% hout is vervaardig. Die saamgestelde materiale met funksionele PE het beter maganiese eienskappe gehad as die met gewone PE. Hoe hoër die hidroksielgroep-inhoud, hoe beter die eienskappe van die HPS materiale, terwyl die materiale met 10% hout beter eienskappe openbaar het as materiale met 30% hout.
Mji, N. (Ntuthuzelo). "Pressurised hot water extraction of wood : three wood species prior to pulping." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50423.
Full textNo english abstract available.
AFRIKAANSE OPSOMMING: Die doel van hierdie studie was om die effek van warm water uitloging van houtspaanders by hoë temperature en onder hoë druk voor alkaliese verpulping te ondersoek. Warm water uitloging van houtspaanders onder druk voor alkaliese verpulping was baie belowend, aangesien dit ekstrakstowwe verwyder het wat andersins verteringschemikalieë sou opgebruik het en ook verbertede verpulpingstoestande meegebring het. Gedurende uitloging het die houtstruktuur verander agv die verwydering van die ekstrakstowwe. Dit het veroorsaak dat die houtstruktuur meer toeganglik geword het, en dit het gelei tot 'n verbeterde diffusie van die kookloog. Die versnelde kookloogdiffusie het 'n verbeterde en meer gelykmatige delignifikasie meegebring. Warm water uitloging by verhoogde druk is ondersoek vir drie houtsoorte nl. Eucalyptus grandis, Acacia mearnsii en Pinus patuia. 'n Twee-uur en 'n een-uur uitlogingstyd van die houtspaanders voorafgaande Kraft en soda-AQ verpulping is ondersoek.Vergelyk met 'n een-uur uitloging is daar gevind dat die twee-uur uitloging van die houtspaanders te drasties was, met 'n gevolg van 'n vermindering in pulpopbrengs, vesellengte en pulpsterkte. Die verlaging III pulpsterkte kon toegeskryf word aan polisaggariedafbreking. Die een-uur uitloging het 'n hoër opbrengs opgelewer as beide die kontrole (nie uitgeloogde houspaanders) en die twee-uur uitgeloogde houtspaanders. Die een-uur uitlogingsperiode het besonder goeie verpulpingsresultate vir die ekstrakstofryke Acacia mearnsii houtspaanders getoon, met 'n bykomstige verbetering in pulpsterkte eienskappe.
Hietala, Maiju. "Extrusion processing of wood raw materials for use in wood-polymer composites." Licentiate thesis, Luleå tekniska universitet, Materialvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26720.
Full textGodkänd; 2011; 20110302 (ysko); LICENTIATSEMINARIUM Examinator: Professor Kristiina Oksman, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: Associate Professor Roberts Joffe, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Tid: Torsdag den 7 april 2011 kl 13.00 Plats: E246, Luleå tekniska universitet
Shiner, Zachary Philip. "An Investigation of Wood and Wood Packaging Waste in the United States." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/84346.
Full textMaster of Science
Sterley, Magdalena. "Green gluing of wood." Licentiate thesis, KTH, Civil and Architectural Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1737.
Full textWålinder, Magnus. "Wetting phenomena on wood." Doctoral thesis, KTH, Production Systems, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2908.
Full textLeverick, Robert Thomas. "Shaping wood/naming shapes /." Online version of thesis, 1990. http://hdl.handle.net/1850/11317.
Full textOveisi-Fordiie, Ehsanollah. "Durability of wood pellets." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/34002.
Full textHansen, Helge Johannes. "Acoustic Studies on Wood." Thesis, University of Canterbury. School of Forestry, 2006. http://hdl.handle.net/10092/1746.
Full textRyan, Jessica. "CRASHING AGAINST THE WOOD." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2788.
Full textM.F.A.
Department of English
Arts and Humanities
Creative Writing MFA
Chen, Zheng. "Torsional fatigue of wood." Thesis, London South Bank University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271780.
Full textMcIlveen-Wright, David. "Electricity generation from wood." Thesis, University of Ulster, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241990.
Full textSedighi, Moghaddam Maziar. "Wettability of modified wood." Doctoral thesis, KTH, Yt- och korrosionsvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175875.
Full textQC 20151029
Sustainable wood modification
Hansson, Lars. "Microwave treatment of wood." Doctoral thesis, Luleå tekniska universitet, Träteknologi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26364.
Full textGodkänd; 2007; 20071015 (ysko)
Vega, Rivera Jorge Humberto. "Premigratory movements of a long-ddistancemmigratory [sic] species, the wood thrush (Hylocichla mustelina)." Connect to this title online, 1997. http://scholar.lib.vt.edu/theses/available/etd-3739142349751421/.
Full textTwomey, Brian M. "The performance and behavior of lightweight wood exposed to fire conditions." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-050207-154942/.
Full textCastleberry, Steven Bryan. "Conservation and management of the Allegheny woodrat in the central Appalachians." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1503.
Full textTitle from document title page. Document formatted into pages; contains xv, 166 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references.
Köpcke, Viviana. "Conversion of Wood and Non-wood Paper-grade Pulps to Dissolving-grade Pulps." Doctoral thesis, KTH, Träkemi och massateknologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-26967.
Full textQC 20101201
Rezaei, Hamid. "Physical and thermal characterization of ground wood chip and ground wood pellet particles." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/60914.
Full textApplied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
Gravelsins, Robert J. "Studies of grinding of wood and bark-wood mixtures with the Szego mill." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0003/NQ33903.pdf.
Full textAndersson, Gunnerås Sara. "Wood formation and transcript analysis with focus on tension wood and ethylene biology /." Umeå : Dept. of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200515.pdf.
Full textMichaelis, L. A. "Evaluation of wood-based energy technologies and the options for wood in Kenya." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382640.
Full textKunstmann, Martin. "Comparative LCA of Wood from Conventional Forestry and Wood from Short Rotation Coppice." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-135927.
Full textKunstmann, Martin. "Comparative LCA of Wood from Conventional Forestry and Wood from Short Rotation Coppice." Technische Universität Dresden, 2012. https://tud.qucosa.de/id/qucosa%3A27690.
Full textMathieu, Valentin. "Wood, Cities, and Trade : An Economic Analysis of the Global Urban Demand for Wood Products and the Dynamics of International Wood Trade." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0267.
Full textTo achieve sustainable development and sustainable natural resource management, a thorough understanding of the various factors that contribute to the wood economy, as well as an accurate forecast of wood supply and demand, are essential. Such analyses rely on models, referred to in this thesis as "wood trade flow models" when studying wood production, trade and consumption. The use of models to explain and predict economic phenomena comes up against several methodological difficulties. Given these difficulties, how can we assess a model's ability to conduct such analyses? This thesis considers three essential and interdependent aspects of modeling to assess a model's ability to achieve its objectives. The first is whether the theoretical framework of models can be tested empirically. The second aspect is to determine whether a model takes into account factors that are important for the heuristic and predictive analysis of economic phenomena. The third aspect concerns the availability and quality of data on which a theory can be tested and from which factors can be identified and quantified. This thesis is structured around these three aspects and is divided into four chapters. The first two chapters deal with two of the modeling aspects considered: (i) the factors taken into account or to be taken into account in modeling the wood economy, and (ii) the development of models based on empirically testable theories. The last two chapters deal with the third aspect of modelling: data quality and its implications for modelling. The aim of this thesis is to conduct a review of the factors considered in modeling wood trade flows, and to propose an economic analysis of urban demand for wood and international trade in wood products. Chapter 1 presents a meta-analysis of wood trade flow modeling concepts. It concludes that economic models rely on a narrow set of factor categories, thus neglecting other important factors, such as urbanization. Chapter 2 develops a spatial model of urban demand for wood. By taking urbanization into account as a factor in the global wood economy, the model offers a realistic and accurate representation of forest economic phenomena, suggesting a crucial role of urban dynamics in shaping the global wood economy. Chapter 3 highlights several discrepancies between export and import data, and proposes a method for accounting for measurement errors in trade analyses. This chapter suggests that these discrepancies are significant, and that failing to correct models for errors in trade data biases model results. Chapter 4 performs a network analysis of the roundwood trade. Although this analysis is primarily descriptive, it provides a realistic and mechanistic model for assessing the structure of the trade network and its dynamics. The scientific contributions of this thesis are threefold: it proposes new methods for modeling the global wood economy, integrates urban dynamics as a factor shaping the global wood economy, and highlights a need for best practices in the analysis of wood product trade. It addresses global issues by highlighting the need to anticipate future urban demand for wood, questions the effectiveness of economic regulation policies applied to forests and wood products, and suggests commercial strategies aimed at minimizing market risks
Slahor, Jeffrey J. "Preservative treatment evaluation of five Appalachian wood species with four preservatives." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=599.
Full textTitle from document title page. Document formatted into pages; contains xiii, 85 p. : ill. Includes abstract. Includes bibliographical references (p. 82-85).
Louro, Graça Maria Cabaço. "Modelo global para as fileiras silvo-lenhosas." Doctoral thesis, ISA/UTL, 2011. http://hdl.handle.net/10400.5/3873.
Full textThe production flows in the sector of wood construction and furniture, paper and paper board and that of wood, paper and paper board wrapping and packaging sector are analyzed. The macroeconomic indicators associated with them are characterized, showing their importance in the Portuguese national economy. The characteristics of the corresponding enterprises and workforce, as well as the main domestic and international market trends for the different phases of the productive cycle are described. The recent evolution of wood production from maritime pine (Pinus pinaster Aiton) and eucalyptus (Eucalyptus globulus) is described and analyzed in a context that takes in account their potential to supply raw material for wood based industries. The effect of forest fire regimes and cuts on wood availability is modeled, using National Forest Inventories data and wildfire statistics. The models were used in predictions of future wood availability under various fire scenarios. Models for the supply and domestic consumption of sawn wood, wood panels, wood pulp, and paper and paper board, based on econometric equations, were developed.
Stevens, Jason. "Material Properties of Wood Ash-Filled and Wollastonite-Filled Polyproplyene Wood Plastic Composites (WPCS)." Fogler Library, University of Maine, 2011. http://www.library.umaine.edu/theses/pdf/StevensJ2011.pdf.
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