Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"wood pulp"”.
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Pressure screening studies with wood pulp
… used in paper making to separate components of a wood pulp slurry (water, wood fibre and solid contaminant material) and to concentrate the wood fibre. The complex solid-liquid and solid-solid mechanisms involved in pressure screening are still poorly understood. This thesis reviews the literature …
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Analysis of wood pulp extracts utilizing gas chromatography-mass spectroscopy
Wood pulp mill effluents continue to attract much attention due to environmental consequences. However, in comparison, very little work has been published on wood pulp extracts themselves. In this investigation, chemithermomechanical (CTMP) pulps as well as Kraft (BKP) pulps were Soxhlet extracted …
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Decolorization of caustic wash liquors from chlorine-bleached, sulfate, wood pulp
no abstract provided by author
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Potential solutions for reducing environmental impact of pest mammal monitoring in New Zealand: A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… analysis comparing the effectiveness of wood-pulp chewcards compared to plastic chewcards, and the potential environmental impact of wood-pulp chewcards. Field trails assessed whether target species interacted differently with wood-pulp chewcards in comparison to plastic chewcards, while …
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Natural fibre reinforced cement composites
… Over the last two decades natural fibre (mainly wood pulp fibre) has emerged as the most acceptable alternative reinforcement for fibre cement products. The first three chapters of this study describe in some depth the preparation and properties of natural fibres, the methods of incorporating …
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Nanocellulose: Preparation, Characterization, Supramolecular Modeling, and its Life Cycle Assessment
… characterization of MT nanocellulose, modeling wood pulp-derived cellulose microfibril cross section structure, and a comparative life cycle assessment (LCA) of different nanocellulose fabrication approaches. The results revealed that MT nanocellulose with mono- to bi-layer sheet thickness …
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Chitosan-Cellulose Nanocrystal Polyelectrolyte Complex Particles: Preparation, Characterization, and In Vitro Drug Release Properties
… prepared by sulfuric acid hydrolysis of bleached wood pulp. Chitosans with three different molecular weights (81, 3·103, 6·103 kDa) and four different degrees of deacetylation (77, 80, 85, 89%) were used. PEC formation was studied by turbidimetric titration. PEC particles were characterized by …
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Análisis de la innovación y la sostenibilidad en la industria forestal
… ABSTRACT Is possible to say that the wood based industries in Spain and Europe still have a reasonable importance, given its economic magnitude and its essential role in maintaining jobs in rural areas. The purpose of this Ph. D is to analyze two essential items in the manufacturing of …
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GESTURES TOWARDS EMPTINESS: AN EXPLORATION OF RITUAL WITH REFERENCE TO BUDDHIST TRADITION AND INNOVATION
… and media: ashes on paper; papermaking; wood pulp; and watercolour. The written thesis entails an analysis of process and outcome in each series of works, seen in relationship to Buddhist and educational disciplines. A four-year period of pedagogical developments in small and large-scale …
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Taint and odour phenomena in carton-board packaging systems
… oxidation reactions, within standard samples of wood pulp obtained from carton-board manufacturers. These oxidation reactions are affected to various extents, by a number of factors such as the temperature, the nature of the fatty acids, the presence of oxidation catalysts such as transition …
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Ovalbumin-Based Scaffolds Reinforced with Cellulose Nanocrystals for Bone Tissue Engineering
… cellulose nanocrystals (CNCs), derived from wood pulp, can be utilized to reinforce these scaffolds while improving biocompatibility. When chemically modified to incorporate surface amine groups, cellulose nanocrystals become capable of covalently crosslinking with the OVA matrix for improved …
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Isolation of Cellulose Nanofibres: Elucidation of a Novel Approach Utilizing Fungal Pretreatment
… In this research, a fungal pre-treatment for wood fibres is investigated which can bring about internal defibrillation in the fibres through reduction of hydrogen bonds and cleavage of hemicellulose chains tethering the cellulose microfibrils together. The pre-treatment of wood fibres with …
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Paper Towns: Sense of Place in Industrial, Small-Town New England, 1869-1927
… England. In the late 1860s, the introduction of wood pulp paper technology transformed formerly small market and manufacturing communities into centers of heavy industry. This dissertation is a study of this transformation. It focuses on three communities: Bellows Falls, Vermont, Franklin, New …
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Cellulose Nanocrystals: Size Characterization and Controlled Deposition by Inkjet Printing
… cellulose micropatterns. CNCs were prepared from wood pulp by H₂SO₄ hydrolysis and characterized in terms of length, width, and thickness distributions by atomic force microscopy (AFM) and dynamic light scattering. Aqueous CNC suspensions were characterized in terms of shear viscosity with a …
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The Potential of Cellulose Nanocrystals in the Detection and Treatment of Cancer
… have prepared stable and reproducible CNCs from wood pulp via sulfuric acid hydrolysis. Furthermore, we have functionalized the surface of these nanoparticles and conjugated them with the targeting ligand folic acid (FA) and the fluorescent imaging agent fluorescein-5\'-isothiocyanate (FITC) to …
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Effects of the Non-ionic Surfactant Tween 80 on the Enzymatic Hydrolysis of Model Cellulose and Lignocellulosic Substrates
… (CNCs) obtained by sulfuric acid hydrolysis of wood pulp. Two methods were developed for the removal of the sulfate groups on the CNCs, resulting from the use of sulfuric acid in their preparation. The effect of sulfate groups, which may be introduced into LC biomass during pretreatment with …
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Determining the dry weight and dry volume of green aspen bolts by use of the water displacement technique
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Forest Products, 1958
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