Relevant bibliographies by topics / Wood stability / Dissertations / Theses
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Dissertations / Theses on the topic 'Wood stability'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Liu, Peiyan. "Improvement of bio-oil stability in wood pyrolysis process." Thesis, Aston University, 2003. http://publications.aston.ac.uk/10065/.

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Pyrolysis is one of several thermochemical technologies that convert solid biomass into more useful and valuable bio-fuels. Pyrolysis is thermal degradation in the complete or partial absence of oxygen. Under carefully controlled conditions, solid biomass can be converted to a liquid known as bie-oil in 75% yield on dry feed. Bio-oil can be used as a fuel but has the drawback of having a high level of oxygen due to the presence of a complex mixture of molecular fragments of cellulose, hemicellulose and lignin polymers. Also, bio-oil has a number of problems in use including high initial viscos
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2

Herritsch, Alfred. "Investigations on Wood Stability and Related Properties of Radiata Pine." Thesis, University of Canterbury. Chemical and Process Engineering, 2007. http://hdl.handle.net/10092/1203.

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Previous studies on wood instability have identified some wood basic properties which influence the timber distortion and shape changes while the wood is losing or gaining moisture. These properties include wood anisotropic shrinkage, equilibrium moisture content (EMC) in both desorption and adsorption, fibre saturation point (FSP) and water diffusion coefficient. This study investigated the stability related wood properties and their variations within the stems of the New Zealand grown radiata pine trees. The basic density, EMC and shrinkage for the earlywood and the latewood were also
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3

Song, Xiaobin. "Stability and reliability analysis of metal plate connected wood truss assemblies." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/7721.

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This thesis describes a study on the stability capacity and lateral bracing force of wood beam-columns and metal plate connected (MPC) wood truss assemblies. A user-friendly computer program, SATA, was developed based on the finite element method (FEM). The program can be used to perform three-dimensional nonlinear structural analyses by using the Newton-Raphson and arc-length methods. The Monte Carlo simulation and response surface methods have also been incorporated into the program for the purpose of reliability analyses. Experimental studies were conducted to provide input parameters and v
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4

Canavan, James W. "The effects of drying on the dimensional stability of spruce wood." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8134/.

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Sitka spruce (Picea sitchensis (Bong.) Carr.) has been the most common forestry species in UK plantations for many decades. It is generally fast grown in short rotation, which has implications for quality. The harvested timber has a number of end-use applications. Of these, sawn construction grade timber is at the high end of market value. Currently, under one third of home grown sawn timber processed by sawmills achieves the required C16 or higher grading for construction class timber. Presently there is significant standing stock of 40 years old or under. Improvements in timber quality would
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5

Gao, Tian. "Mode-I Fracture in Bonded Wood: Studies of Adhesive Thermal Stability, and of the Effects of Wood Surface Deactivation." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/31697.

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This work included two separate studies; the common theme in each was the use of mode-I fracture testing to evaluate wood adhesion. In the first study, mode-I fracture testing was used to compare the thermal stability of polyurethane (PUR) and resorcinol-formaldehyde (RF) wood adhesives. Bonded specimens for both adhesives were subjected to prolonged thermal exposure, and fracture testing was subsequently conducted after re-equilibration to standard test conditions. It was found that both PUR and RF suffered a significant fracture energy loss after heat treatment, and that RF was more thermall
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6

Arritt, Daniel L. "Lateral collapse potential of wood pallets." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/90905.

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Lateral collapse is a failure mode of wood pallets which most frequently occurs during transportation and handling. The study objective was to develop a simplified procedure for making relative comparisons in the lateral collapse potential of competing pallet designs. A theoretical model was developed to predict the maximum horizontal force a pallet can sustain. A simple equilibrium of forces approach including joint rigidity was used. A lateral load test machine was built which induces and measures the amount of horizontal force required to collapse a pallet. After testing, the model was sh
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7

Sedighi, 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.

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Despite many excellent properties of wood which make it suitable for many applications, it suffers from a number of disadvantages limiting its use. For instance, modification is needed to reduce water sorption and to improve decay resistance, dimensional stability and weathering performance. In addition, wood/liquid interaction such as water wettability on wood plays an important role in design and characteristics of many processes and phenomena such as adhesion, coating, waterproofing, wood chemical modification, and weathering. This thesis focuses on enhancing the understanding of wetting of
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8

St-Amour, Rémi. "Lateral Torsional Buckling of Wood I-Joist." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35161.

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Engineered wood I-joists have grown in popularity as flooring and roofing structural systems in the past 30 years, replacing solid sawn lumber joists. Typical wood I-joists are manufactured with a very slender section, which is desirable to achieve higher flexural capacities and longer spans; however, this makes them susceptible to lateral torsional buckling failure. Continuous beam spans and uplift forces on roof uplift are potential scenarios where lateral instability can occur and reflects the need to investigate the lateral torsional buckling behavior of wood I-joists. Within this context,
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9

Warensjö, Mats. "Compression wood in Scots pine and Norway spruce : distribution in relation to external geometry and the impact on dimensional stability in sawn wood /." Umeå : Swedish University of Agricultural Sciences, 2003. http://diss-epsilon.slu.se/archive/00000415/.

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Thesis (doctoral)--Swedish University of Agricultural Sciences, 2003.<br>Thesis documentation sheet inserted. Appendix includes reprints of five papers and manuscripts, four co-authored with others. Includes bibliographical references. Also issued electronically via World Wide Web in PDF format; online version lacks appendix.
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10

Ermeydan, Mahmut Ali. "Wood cell wall modification with hydrophobic molecules." Phd thesis, Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7132/.

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Wood is used for many applications because of its excellent mechanical properties, relative abundance and as it is a renewable resource. However, its wider utilization as an engineering material is limited because it swells and shrinks upon moisture changes and is susceptible to degradation by microorganisms and/or insects. Chemical modifications of wood have been shown to improve dimensional stability, water repellence and/or durability, thus increasing potential service-life of wood materials. However current treatments are limited because it is difficult to introduce and fix such modificati
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11

Grosse, Charlotte. "Development of innovative bio-based treatments for wood modification with bio-polyesters." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0213.

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La modification thermo-chimique est un procédé qui consiste à modifier la matière à cœur, avec pour objectif d’améliorer les propriétés du bois, en particulier la résistance fongique. Pour ce faire, conférer au bois un équilibre hygroscopique inférieur à la limite basse de développement des champignons est une approche qui permet en sus de limiter les variations dimensionnelles dues à l’humidité de l’air. Limiter les variations dimensionnelles augmente logiquement la durabilité des assemblages et des revêtements de surface, ce qui améliore encore les performances du matériau. Les constituants
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12

Li, Xiaoming. "The effect of stiffness and mass on the dynamic response of wood floors." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06112009-063311/.

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13

Sehlstedt-Persson, Margot. "Properties of solid wood : responses to drying and heat treatment." Licentiate thesis, Luleå : Luleå tekniska universitet, 2005. http://epubl.ltu.se/1402-1757/2005/70/.

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14

Grosse, Charlotte. "Development of innovative bio-based treatments for wood modification with bio-polyesters." Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0213.

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La modification thermo-chimique est un procédé qui consiste à modifier la matière à cœur, avec pour objectif d’améliorer les propriétés du bois, en particulier la résistance fongique. Pour ce faire, conférer au bois un équilibre hygroscopique inférieur à la limite basse de développement des champignons est une approche qui permet en sus de limiter les variations dimensionnelles dues à l’humidité de l’air. Limiter les variations dimensionnelles augmente logiquement la durabilité des assemblages et des revêtements de surface, ce qui améliore encore les performances du matériau. Les constituants
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15

Dubey, Manoj Kumar. "Improvements in stability, durability and mechanical properties of radiata pine wood after heat-treatment in a vegetable oil." Thesis, University of Canterbury. School of Forestry, 2010. http://hdl.handle.net/10092/3856.

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Radiata pine is a major plantation grown wood in the Southern hemisphere, but has inferior dimensional stability and low durability compared to other commercial species and the improvement of these features is the focus of this thesis. Specifically this thesis examines the dimensional stability, durability and mechanical properties of radiata pine after heat-treatment (160-210°C) in linseed oil. Changes in colour, micro-structure and chemistry with heat-treatment were studied. To optimise the treatment results, oil heat-treatment of wood was also carried out after thermo-mechanical compressi
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16

Bamberg, Christopher Ryan. "Lateral Movement of Unbraced Wood Composite I-Joists Exposed to Dynamic Walking Loads." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/31977.

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The research summarized in this thesis is comprised of an experimental analysis of the mechanical behavior of a wood composite I-joist with different bracing configurations exposed dynamic walking loads. Three 16 in. deep GPI® 65 I-joists were simply supported and laid parallel to each other, while the bracing was attached to the top flange. Five different brace stiffnesses were used: zero stiffness (control), 1.2 lb/in., 8.5 lb/in., 14.0 lb/in. and infinitely stiff. Two different brace configurations were used: one-quarter of the span length (60 in.) and one third the span length (80 in.
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17

Scott, Joseph E. "Column Buckling Analysis of Wood Stud Members due to Reduced Stiffness over Partial Member Length." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543325743355501.

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18

Mante, Nii Ofei Daku. "Influence of wood on the pyrolysis of poultry litter." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/34973.

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Pyrolytic oils produced from poultry litter differ in physico-chemical properties and the chemical composition. The litter is composed of manure and bedding material with traces of spilled feed and feathers. The type and amount of bedding material was varied to investigate its influence on the pyrolysis of layer manure. 400g of each feedstock: manure, wood (pine and oak), and mixtures of manure and wood in proportions (75:25 50:50, and 25:75 w/w %) respectively were subjected to fast pyrolysis at 450oC in a fluidized bed reactor. The total pyrolytic oil yield ranged from 43.3% to 64.5 wt%. The
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19

Almeida, Tiago Hendrigo de. "Estudo da estabilidade dimensional de madeiras tropicais brasileiras." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-05082015-091914/.

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A madeira é um material de origem biológica, renovável, com papel importante no ciclo do carbono, que contribui para o desenvolvimento sustentável. As madeiras tropicais brasileiras são apreciadas na indústria da construção civil em peças estruturais, componentes de edificação e mobiliário. A melhor utilização da matéria-prima nos diversos processos depende do conhecimento das suas propriedades, e nesse aspecto, os estudos sobre estabilidade dimensional são escassos, em sua maioria, desenvolvidos para coníferas do hemisfério Norte. Este trabalho tem como objetivo geral aprofundar o estudo da
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20

Quitadamo, Alessia. "Influence of wood flour and cellulose on the properties and the stability of formulations based on polyolefins and bio-based polymers." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI015.

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L'objectif de cette recherche est le développement de matériaux à haute valeur ajoutée, avec une grande quantité de charges bio-dérivées, aboutissant à un produit plus écologique. La stratégie poursuivie est basée à la fois sur l'introduction de fibres naturelles et sur l'utilisation de mélanges de polymères à base d'huile et bio-dérivés comme matrices, réduisant la quantité non biodégradable dans le matériau. Le projet de thèse est basé sur le développement de mélanges HDPE / PLA remplis de charges naturelles, telles que la farine de bois et les fibres de papier recyclées. Le polyéthylène hau
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21

Dias, Arildo de Souza 1979. "Arquitetura, historia de vida e infestação por lianas em especies arboreas de florestas semideciduas no municipio de Campinas, SP." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314966.

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Orientador: Fernando Roberto Martins<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-12T18:43:37Z (GMT). No. of bitstreams: 1 Dias_ArildodeSouza_M.pdf: 671371 bytes, checksum: 783000fd26b32c833785efd804fe2f1d (MD5) Previous issue date: 2009<br>Resumo: Lianas possuem um papel chave na dinâmica de ecossistemas florestais, principalmente no que diz respeito aos efeitos diretos exercidos sobre os forófitos, como diminuição da taxa de crescimento e reprodução e aumento da taxa de mortalidade. Nosso objetivo foi responder
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22

King, Leonora Adele. "The impacts of wildfire and Mountain Pine Beetle disturbance on wood budgets, stability and related sediment storage in low-sediment supply streams of the Okanagan Basin." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39752.

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This thesis presents the Large Woody Debris (LWD) budgets and related sediment dynamics of 12 headwater streams in the Okanagan Basin of British Columbia. The study streams include 3 wildfire (from the recent Okanagan Mountain Park Fire in 2003) sites and 3 control sites in the Interior Douglas-fir (IDF) biogeoclimatic zone, and 3 recent Mountain Pine Beetle (MPB) infestation sites and 3 control sites in the Montane Spruce (MS) zone. The wood budget components were quantified based on repeated annual wood surveys, and represent the first wood budgets produced in the literature. Wildfire was fo
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23

Rundlöf, Mats. "Interaction of dissolved and colloidal substances with fines of mechanical pulp - influence on sheet properties and basic aspects of adhesion." Doctoral thesis, KTH, Pulp and Paper Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3297.

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24

Ferrandon, Magali. "Mixed metal oxide - noble metal catalysts for total oxidation of volatile organic compounds and carbon monoxide." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3156.

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25

Baietto, M. "Development of a new non-invasive tool for the assessment of decays in the urban environment." Doctoral thesis, Università degli Studi di Milano, 2007. http://hdl.handle.net/2434/161509.

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The problem of tree stability in the urban environment is one of the main worries of our public administrations. The very bad conditions in which plants live in the cities force them to endure perennial stress, many various pests, and damage from accidental injuries. Currently, the stability methodology assessment in the urban environment initially follows a visual analysis of individual trees pursued by an evaluation of the internal state by using different instruments that are feasible but often invasive, expensive, or cannot be used in the urban environment. Moreover, many of these instrume
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26

Maxe, Charlotte. "Impact d’un élevage en fût de chêne sur les caractéristiques physico-chimiques et organoleptiques des vins de base champenois." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK026.

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Les caractéristiques environnementales du bois de chêne (origine géographique et espèce), ainsi que les pratiques de tonnellerie peuvent impacter les propriétés physico-chimiques et moléculaires des fûts de tonnellerie, et par conséquent des vins vinifiés et élevés dans ces fûts. Cet impact de l'élevage sous bois sur les vins de base champenois n'a quasiment jamais été étudié à ce jour, alors que cette pratique est mise en œuvre depuis plusieurs années par certaines maisons. Or, les caractéristiques de ces vins de base (acidité, degré alcoolique) ainsi que l'absence de recherche d'un boisé tel
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27

Barth, John A. "Stability of a coastal upwelling front over topography." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/51462.

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28

Gril, Joseph. "Une modelisation du comportement hygro-rheologique du bois a partir de sa microstructure." Paris 6, 1988. http://www.theses.fr/1988PA066271.

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L'etude concerne la prise en compte des variations d'humidite dans la representation du comportement mecanique du bois dans la direction des fibres. On rapelle des notions de base sur le bois, puis on analyse des resultats experimentaux sur le couplage hygromecanique. On propose ensuite des modeles uniaxiaux de la mecanosorption, basee sur l'ultrastructure de la matiere lignocellulosique. L'action de l'eau est modelisee de deux manieres. On prend enfin explicitement en compte la structure tridimensionnelle et l'orientation du reseau microfibrillaire. On propose une interpretation des contraint
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29

Tyutyunnik, L. "Language policy and intercultural communication as a factor of stability in modern world." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/44919.

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Language is a tool given to a human to be able to contact with the world. Understanding the language of a person of different culture is the first step to understanding his character, mentality and nature of his actions. It is the first step towards intercultural cooperation.<br>Мова є інструментом, наданим людині, щоб мати можливість зв'язатися із зовнішнім світом. Розуміння мови людиною іншої культури є першим кроком до розуміння її характеру, менталітету і характеру її дій. Це перший крок на шляху до міжкультурного співробітництва.<br>Язык является инструментом, данным человеку, чтобы иметь
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30

Russell, Gabrielle Nicole. "The Impact of Woody Debris on Bank Stability and Macroinvertebrates in IntermittentHeadwater Streams within the Western Allegheny Plateau." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1524857157950265.

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31

Hristova, Hristina G. "Stability of large-scale oceanic flows and the importance of non-local effects." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/52761.

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Thesis (Ph. D.)--Joint Program in Physical Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 207-211).<br>My thesis covers two general circulation problems that involve the stability of largescale oceanic flows and the importance of non-local effects. The first problem examines the stability of me
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32

Munbodh, Mrinal. "Deriving A Better Metric To Assess theQuality of Word Embeddings Trained OnLimited Specialized Corpora." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1601995854965902.

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33

Winey, Nastasia Elizabeth. "Modifiable stability and maneuverability of high speed unmanned underwater vehicles (UUVs) through bioinspired control fins." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129025.

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Thesis: S.M., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Mechanical Engineering; and the Woods Hole Oceanographic Institution), September, 2020<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 73-74).<br>Underwater Vehicles generally have control fins located only near their aft end, for making controllable changes in directions. This design allows for stability of control; however, the turns are typically large in comparison to the vehicle body length. Some bo
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Naef, Alain. "Sterling and the stability of the International Monetary System, 1944-1971." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/285170.

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This dissertation studies the role of sterling during the Bretton Woods period (1944-1971). The Bretton Woods system has often been described as a dollar system with sterling having lost its relevance as reserve currency. However, despite being a secondary reserve currency and having lost importance, sterling was the 'first line of defence for the dollar' as contemporaries put it. They frequently stressed the fact that a sterling crisis would have consequences on the stability of the Bretton Woods system but economic historians have never tested this empirically. This dissertation argues that
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35

Ramananjarasoa, Clarisse. "Modélisation paramétrique de champs stochastiques : analyse de la stabilité des processus autorégressifs 2-D de suppoort quart de plan, étude de la modélisation de type wold 2-D." Bordeaux 1, 2002. http://www.theses.fr/2002BOR12576.

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Cette thèse porte sur l'étude de la modélisation paramétrique de processus stochastiques bidimensionnels. Elle s'articule sur deux volets. Le premier volet traite le problème de la stabilité des systèmes linéaires, en particuler le modèle autorégressif bidimentionnel de support quart de plan. Nous proposons une extension au cas 2-D du critère de stabilité de Schur-Cohn 1-D en utilisant une approche géométrique de la prédiction linéaire. Le deuxième volet est consacré à l'étude de la modélisation de processus aléatoires bidimensionnels fondée sur la décomposition de type Wold 2-D. La modélisati
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36

Belhaj, Rhouma Amira. "Développement et écoconception d’une veste formelle multifonctionnelle." Electronic Thesis or Diss., Centrale Lille Institut, 2023. http://www.theses.fr/2023CLIL0023.

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Le tissu extérieur d'une veste, souvent en laine, représente la pièce la plus importante de la veste. C'est ce tissu qui définit l'identité de la veste par son aspect et son toucher. Cependant, le rétrécissement des étoffes en laine pendant le lavage entraîne une perte de l’esthétique du vêtement et donc une augmentation rapide des déchets textiles de laine. Le nettoyage à sec est donc fortement recommandé, mais il nécessite des solvants qui ne sont pas respectueux à l'environnement. L'objectif de cette étude porte sur le développement et l’écoconception d’une veste de costume formelle multifo
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37

Sengele, Loic. "Etude des modes octupolaires dans le noyau atomique de 156Gd : recherche expérimentale de la symétrie tétraédrique." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE038/document.

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Les symétries géométriques jouent un rôle important dans la compréhension de la stabilité de tout système physique. En structure nucléaire, elles sont reliées à la forme du champ moyen utilisé pour décrire les propriétés des noyaux atomiques. Dans le cadre de cette thèse, nous avons utilisé les prédictions obtenues avec l'aide du Hamiltonien du champ moyen nucléaire avec le potentiel de Woods-Saxon Universel pour étudier les effets des symétries dites de « Haut-Rang ». Ces symétries ponctuelles mènent à des dégénérescences des états nucléaires d’ordre 4. Il est prédit que la symétrie tétraédri
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38

Liu, Hsiang-Shih, and 劉相識. "Dimensional Stability and Decay Resistance of Acetylated Wood." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/68595713630116905626.

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碩士<br>國立中興大學<br>森林學系<br>81<br>Eight species were used for this experiment:Taiwan spruce , White spruce (USA), Elka spruce (USSR), Chinese hemlock, Western hemlock, Taiwan acacia, Chinese guger-tree, Rubber wood, to determine the effects of the dimensional stability of acetylated wood and its decay resistance. The results obtained by this experiment may be summarized as follow : 1.The anti- shrinkage efficiency (ASE) in radial direction of eight acetylated woods were more than 77％, and all o
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39

Lee, RA. "The stability of wood resin colloids in paper manufacture." Thesis, 2012. https://eprints.utas.edu.au/14702/10/Lee_whole_thesis_ex_pub_mat.pdf.

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Within the pulp and paper industry, the recycling of water to reduce water consumption leads to accumulation of colloidal material in the process water and greater risk of deposition. Resinous materials, arising from the wood extractives released during papermaking, form colloidal particles in solution that agglomerate and deposit onto the different surfaces within the mill. The formation of the resinous deposits, known as pitch, can be detrimental to the paper quality, process control and efficiency. A major factor in the colloidal stability of these substances is the presence of natural poly
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40

Kasal, Bohumil. "In-plane stability of truss chords with application to wood trusses." Thesis, 1993. http://hdl.handle.net/1957/35834.

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Stability analysis of truss chords loaded by a combination of axial and lateral forces is studied. A simple model based on beam-column theory is proposed and analyzed. The continuous truss chord is replaced by a beam column loaded by end moments replacing the effect of adjacent members. The solution yields deflections and moments allowing one to compute the stress at any point of the truss chord. Analytical and numerical solutions are applied to an example of a wood truss with a continuous top chord. The numerical solution for the deformations converges rapidly. Non-converging results indicate
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IEONG, WANIE, and 楊詠儀. "Improvement on Dimensional Stability of Wood with Polyethylene Glycol (PEG-2000)." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/6en7vq.

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碩士<br>國立宜蘭大學<br>森林暨自然資源學系碩士班<br>105<br>In the past, study on the Dimensional Stability of Wood by Polyethylene Glycol mostly used the liquid polyethylene glycol. The surface of the wood treated with liquid PEG is prone to a sticky feeling. Therefore, the purpose of this research is to reveal the improvement of dimensional stability and properties of wood treated with solid polyethylene glycol (PEG). Primary results indicate that PEG of molecular weight 2000 shows proper impregnation into wood. The best concentration of PEG-2000 treating solution is 30%. Small size specimens treated with PEG-
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Wang, Jain-Lin, and 王健霖. "Effects of Compound Preservatives on the Fungal Decay Resistance and Dimensional Stability of Wood." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/38140386314327656154.

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碩士<br>國立屏東科技大學<br>木材科學與設計系所<br>101<br>The purposes of this research were to evaluate the chemical retention, chemical loss, dimensional stability, and fungal decay resistance of woods ( Cunninghania lanceolata, Cl; Cryptomeria japonica, Cj; Taiwania cryptomerioides, Tc; and Liquidambar Formosan, Lf) separately treated with five compound chemicals ( DPAs, DPB, DPBx, DP, and DPAp ) based on six kinds of chemicals（dicyandiamide,D; phosphoric acid, P; boric acid, B; borax, Bx; ammonium hydrogen phosphate, Ap; and ammonium sulfamat, As）. The results of antifungal test against brown rot fungus（G. t
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Tabosa-Vaz, Sacha. "A comparative analysis of stability and structure-functional relationships of different xylanases." Thesis, 2013. http://hdl.handle.net/10321/873.

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Submitted in complete fulfilment for Masters Degree in Technology: Biotechnology, Durban University of Technology, 2013.<br>A comparative thermostability analysis of different partially purified xylanases from Rhodothermus marinus, Bacillus halodurans, Thermomyces lanuginosus and Pulpzyme HC was studied using differential scanning fluorometry (DSF), fluorescence spectroscopy and circular dichroism (CD). The R. marinus xylanase was found to have an optimum temperature and pH of 90oC and 6 respectively while the B. halodurans xylanase was optimally active at 70oC and a broad range of alkali
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Barquin, Adrew. "Effect of High Yield Pulp on the Dimensional Stability of Wood-free Paper for Inkjet Printing Applications." Thesis, 2011. http://hdl.handle.net/1807/29493.

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A hygroexpansimeter, cockling tester and a novel x-ray microtomography technique were employed to characterize hygroexpansivity as well as macro- and micro-scale cockling of wood-free paper sheets containing varying amounts of aspen high yield pulp (HYP) in order to validate its potential applicability in inkjet printing. Results from the hygroexpansimeter confirm previous findings that substitution levels of 30% and above lead to a slight deterioration of hygroexpansivity; however, contrary to the expected outcome, aspen HYP did not necessarily result in a higher tendency to form cockles. In
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NĚMCOVÁ, Michaela. "Kvalifikace primární půdní organické hmoty podle rychlostní konstanty oxidace v lesních půdách." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-376216.

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The work was focused on the research of soil organic matter content and quality of selected forest soils. In the theoretical part of the thesis there were described in detail terms important to understand the given topic. In the practical part soil probes were excavated and soil samples were taken from individual horizons. The probing was carried out in two stands with a different representation of trees (forest type 0P, district Hodějov, Forest Management Třeboň, ownership of the Czech Republic, right to manage Forests of the Czech Republic, etc.). In the first case, it was a vegetation o
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Radivojevic, Suzana. "Investigation of formation and stability of fixation products of inorganic wood preservatives based on their differential solubilities in aqueous solutions." 2006. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=449861&T=F.

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Sousa, Rui Manuel Lopes de. "Avaliação experimental da estabilidade dimensional de elementos em pinho bravo e madeira tratada termicamente." Master's thesis, 2012. http://hdl.handle.net/1822/24768.

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Dissertação de mestrado em Construção e Reabilitação Sustentáveis<br>A madeira é um material higroscópico, cujas propriedades físicas e mecânicas dependem do seu teor de água. Sendo um material natural exibe uma heterogeneidade significativa e por ter uma estrutura celular, apresenta uma anisotropia acentuada. Pretende-se com este trabalho avaliar a influência do teor de água na estabilidade dimensional da madeira mais comum em Portugal (Pinho bravo) e de uma madeira tratada termicamente. Nesta avaliação está integrada a variação da massa e a variação das dimensões no sentido radial e tangenc
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Lin, Ren-Jeng, and 林仁政. "The modification of dimensional stability of woods by heat treatments." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/68688532971577896194.

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碩士<br>國立中興大學<br>森林學系<br>85<br>The purpose of this study was to modify the dimensional stability, color changes and the improved effects of mechanical properties of wood by heat treatments at different temperatures and different times by sand-heat methods. The species applied for this experiment were Chinese cedar, Japanese cedar, paulownia, acacia, teak and red oak. The main results obtained by this study are summarized as the follows: 1. The percentage of reduction in specific gravity had
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Nein, Ching Lan, and 粘青藍. "Bleachability and Brightness Stability of Kraft Pulps from Shorea Woods." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/69097827836235727165.

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Strey, Elsie Grethe. "Enzymatic modification of woody cell walls for improved stability of pulp fibres." Diss., 2010. http://hdl.handle.net/2263/28516.

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The bonding of fibres in paper is influenced by environmental changes (e.g. moisture) that may cause unstable fibres to move. These movements include cell-wall swelling, fibre lifting and/or puffing that break inter-fibre bonds and lead to reduced strength and surface roughness. Fibre puffing is defined as the expansion of the lumen area as result of changes in the environment. Puffing was investigated through image analysis of scanning electron micrographs. Detailed images were obtained with samples that were embedded in resin and then etched. Puffing of fibres was then quantified by calculat
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