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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
361

A fundamental study of boiling heat transfer mechanisms related to impulse drying

Rudemiller, Gary R. 01 January 1989 (has links)
No description available.
362

An Investigation of Z-direction density profile development during wet pressing.

Burns, James Robert 01 January 1992 (has links)
No description available.
363

Flow properties of coating clays at high rates of shear

Arnold, Kenneth A. (Kenneth Alan) 01 January 1942 (has links)
No description available.
364

Light scattering in fibrous sheets

Arnold, Edwin W. 01 January 1962 (has links)
No description available.
365

The effect of the hydroxyl groups of cellulose on its papermaking properties

Bletzinger, J. C. (John Calvin) 01 January 1940 (has links)
No description available.
366

An investigation of the role of the adhesive in the structure of pigment-adhesive films

Burke, James L. 01 January 1966 (has links)
No description available.
367

A study of the flocculation and dispersion of papermaking fibers

Erspamer, August 01 January 1939 (has links)
see pdf
368

A study of future development strategies for E-paper Display Industry

Lin, Chia-Yun 13 May 2011 (has links)
The purpose of this study is to investigate the current status of E-paper display industry by secondary data collection. The technology evolution of E-paper display, current status of supply-chain, and treats and weaknesses that E-paper display is facing will be covered in this paper. The conclusion and recommendation will be given through the analysis of secondary data. Based on the result of Diamond Theory analysis and of SWOT analysis¡AE-paper display is facing following threats: 1. The e-paper display industry is still in introduction stage, the cost of E-paper is higher than the cost of TFT-LCD display 2. High capital investment in Research and Develop 3. Hard to generate economic scale due to be lack of mainstream technologies 4. Different consumer needs between domestic market and oversea markets¡Athe product is hard to response the needs of oversea consumers. This would make vendors difficult to get the competitive edge. The recommendations of this study are listed below¡G1. E-paper display vendor could make more efforts in product development and consumer education to expand the market share and increase the return of investment 2. Expanding specific to prevent the mainstream specific switch overnight 3. Increase the demand and expand the market share 4. Get a hold of the different consumer needs in different market s and increase the demand of domestic markets actively.
369

Trade with emission allowances : the impact on the Swedish paper and pulp industry´s competitiveness

Östman, Beata January 2006 (has links)
<p>In January 2005 a trading scheme with emission allowances, including carbon dioxide (CO2), was introduced in Europe. This has influenced the electricity price as well as the price of CO2 emitting production. The paper and pulp industry uses a high share of electricity and emits CO2 and is therefore chosen. This industry is investigated to see if the competitiveness for the industry has been influenced by the emission trading scheme. Since the trial period is too short to give any clear results, USA has been investigated to make comparisons with Sweden. Different theories about the subject together with electricity price and production price data from Statistiska Centralbyrån. A competitiveness model is calculated with help from production prices and show that Sweden has become relatively more competitive compared to the USA since 1995. A reason for this can be the introduction of an emission trading scheme in the USA in 1995. If this is the case, the Swedish paper and pulp industry can face a decrease in competitiveness in the near future.</p>
370

Residual stresses in paperboard and the influence of drying conditions

Östlund, Magnus January 2005 (has links)
<p>The drying sequence in the manufacturing process for paperboard involves evaporation of water, primarily from within the fibres. The vapour is then transported out of the web by pressure or concentration gradients. As the moisture transport from the paper web to the ambient is quicker than the moisture transport within the fibre network to the surfaces of the web, moisture gradients develop through the thickness of the web. This work concerns effects on the mechanics of paper drying from the variation in moisture through the relatively thin structures of paper and paperboard.</p><p>Distributions of inplane residual stresses through paper materials in the unloaded state after drying are believed to be caused by the varying moisture through the thickness during drying. The distributions in general exhibit compressive stress near the board surfaces and tensile stress in the interior of the board. This may be modified after drying and is also affected by structural variation in the material between different plies of multi-ply paperboards.</p><p>The stress development during drying is important because it influences the resulting material properties of the paper and because it can lead to curl, which is a quality problem. The residual stresses themselves are an error source in simulation or evaluation of the mechanical behaviour of paper.</p><p>In this work, residual stress distributions in paperboard were determined experimentally, to clarify the mechanisms of residual stress build-up. An experimental method for such tests was also developed. Based on the experimental findings, the mechanics of paper drying was modelled and the stress build-up simulated. Simulation offers a way of studying how the properties of paper develop during drying of wet paper webs.</p>

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