Thesis (M.S.)--Oregon State University, 1983. / Typescript (photocopy). Includes bibliographical references (leaves 88-91). Also available on the World Wide Web.

No description available.

Thesis (Ph. D.)--University of Hong Kong, 2008. / Includes bibliographical references (leaf 268-284) Also available in print.

Wallpaper is a significant decorative finish of late nineteenth century interiors. Determining the appropriate approach for treatment in situ, execution of a custom reproduction, or the selection of an appropriate reproduction for a "period look" requires extensive research by an interior designer. The integrity of the historic interior can be lost or compromised during the restoration or rehabilitation process if it is based on misguided decisions. The conservation principles established in the Venice Charter and the criteria or guidelines established in the Secretary of the Interior's Standards for Rehabilitation must be considered before a plan is implemented.The emphasis of this thesis will be establishing a methodology which addresses the design issues confronting interior designers with regard to historic wallpaper in the context of restoration and rehabilitation or adaptive use projects. The period of 1870-1900 reflects a major change inexhibitions have examined aspects of this complex period and it style and the peak period for production and use of American wallpaper. This is the most misunderstood period with regard to wallpaper because the rejection of wallpaper by the modern movement lingers today. In the past decade, four major museum is now being viewed as a critical cultural and artistic watershed.Through research, an appreciation of the various patterns and colorways will be developed. The technological innovations which affected the quality and quantity of wallpaper will also be examined. Documentation of wallpaper for this period will also include reference collections, interior photographs taken during the period, and examination of original sources written during or preceding the period. A survey of what documented reproductions are available on the market today and which are appropriate for interiors of American buildings constructed in the decades 18701900 will be reviewed. Books have been written on the subject of wallpaper, but a single reference does not exist with the information and guidelines needed by designers working on restoration and rehabilitation projects.The selected case studies examine the restoration and rehabilitation approaches to wallpaper. Conclusions were drawn from the diverse projects to reveal the broad range of appropriate treatments or solutions in the context of projects and issues. / Department of Architecture

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Mycotoxins are secondary metabolites produced by many fungal species. Health effects induced by the ingestion of these substances are well documented and some mycotoxins are now regulated for their maximum tolerable levels in foods. However, other routes of exposure to these contaminants are possible. Thus, if irritating or allergenic reactions related to the inhalation of fungal spores or mycelial fragments have been demonstrated, inhalation of mycotoxins is also suspected to be causing certain respiratory disorders or certain pathologies. Indeed, mycotoxins can be found in spores but also on finer particles which are easily aerosolized and therefore likely to be inhaled. However, data on the hazard associated with human exposure to mycotoxins by inhalation are still very fragmented. In this context, our main objective was to characterize the aerosolization of mycotoxins during the colonization of different materials encountered in indoor environments by toxinogenic molds. First we studied growth and production of mycotoxins during the colonization of building materials (wallpaper, painted fiberglass wallpaper, vinyl wallpaper, fir, fiberglass) by three fungal species of interest: Aspergillus versicolor, Penicillium brevicompactum, Stachybotrys chartarum. These species were chosen because of their frequent presence in indoor environments and their diverse mycelial organization. In addition, these three species produce different toxins: sterigmatocystin, mycophenolic acid and macrocyclic trichothecenes for A. versicolor, P. brevicompactum and S. chartarum, respectively. These studies have shown that, during their development on tested materials, three species produce mycotoxins. The most favorable material for fungal development and toxinogenesis is wallpaper. Mycophenolic acid, sterigmatocystin and macrocyclic trichothecenes can thus be produced at levels of 1.8, 112.1 and 27.8 mg/m2, respectively, on this material. These toxins can then be partially aerosolized. We have shown that aerosolization depends on species and their mycelial structure, but also on culture conditions and airflow. This transfer to air is nevertheless observed after aeraulic solicitations which can be easily encountered in indoor environments because theycorrespond to the movement of people in a room (0.3 m/s), speed of air in ceiling diffusers (2 m/s), slamming doors or air drafts when opening windows(6 m/s). P. brevicompactum showed to be the easiest to aerosolize. The major part of the aerosols’ toxic charge is found in particles whose size corresponds to that of spores or mycelial fragments. However, for macrocyclic trichothecenes, toxins were also found in particles smaller than spores, which could easily be inhaled by occupants and penetrate deep into the respiratory tract. In order to better characterize the actual hazard associated with inhalation of these compounds, cytotoxicity studies have been performed using lung cells and comparing with results observed on digestive cells. Pulmonary toxicity is comparable to that observed in digestive cells. Macrocyclic trichothecenes are much more toxic than other tested toxins with IC50 in order of ng/ml. In parallel, we analyzed the VOCs specifically produced during active mycotoxinogenesis in order to identify potential biomarkers of the actual production of mycotoxins that could be used as tools for monitoring of indoor environments. Unfortunately, this approach has not, for the moment, led to the identification of specific targets. In the end, we evaluated the persistence of these contaminants during application of bleach, the most frequently used decontamination process. We have shown that a normal cleaning procedure allows only partial removal of mold.

Let G be a group. A Weak Cayley Table mapping ϕ : G → G is a bijection such that ϕ(g1g2) is conjugate to ϕ(g1)ϕ(g2) for all g1, g2 in G. The set of all such mappings forms a group W(G) under composition. We study W(G) for the seventeen wallpaper groups G.

published_or_final_version / Electrical and Electronic Engineering / Doctoral / Doctor of Philosophy

With the increases of environmental awareness and attention by the government and audiences, people begin to prosecute the pollution makers instead of tolerance. This study tried to control an air pollution source from a wallpaper plant for the purpose of attenuating odor prosecutes by residents near the plant. This study investigated chemical scrubbing, ozonation followed by GAC (Granular Activated Carbon) adsorption and biotrickling filtration techniques as control methods for eliminating odorous compounds from a waste gas stream emitted from the wallpaper plant. Scrubbing test results indicate that with an oxidative solution of 800 mg/L residual chlorine at pH 7.0 and a reductive solution of 0.2% hydrogen peroxide at pH = 12, around 90% of the VOCs (volatile organic compounds) in the tested gas could be removed. Odor intensities could be reduced from 2,317 (expressed as dilutions to threshold) to 130. Results also indicate that around 85 % of the carbonyl compounds, 41% of the alkenes and 22% of the alkanes in the waste gas could be eliminated. No removal of aromatic and halo-hydrocarbons was observed. It requires around NT$70 for chemicals to treat 1000 m3 of the gas. Ozonation-GAC adsorption tests indicate that with an ozone dosage of 5 ppm in the waste gas and a gas-ozone contact time of 12 s followed by GAC adsorption, around 95% of the VOCs in the tested gas could be removed. Odor intensities were reduced from 2,317 to <55. Around 94 % of the carbonyl compounds, 79% of the alkanes, 76% of halo-hydrocarbons, 41% of the alkenes and 20% of aromatics in the waste gas could be removed. Around NT$ 15,700 for ozone and GAC is required to treat 1000m3 of the gas. Results from biotrickling filtration tests indicate that with the supplementations of nitrogen and phosphorous nutrients to biofilms attached to wood-chip packings, around 83% of the influent VOCs could be biodegraded. Odor intensities could be reduced from 1,737 to <55. Around 61 % of the carbonyl compounds, 67% of the alkanes, 18% of halo-hydrocarbons and 33% of aromatics in the waste gas could be removed. Around NT$ 13 is required to treat 1000m3 of the gas. For an actual application, it is suggested that a process that a combination of chemical scrubbing and ozonation-GAC adsorption may be a proper solution to the control of the odorous emission from the plant. Biotrickling filtration can be best after verifying the performances of the technique by a pilot test.

Wall-Couture is a project within the textile design field, which aims to explore methods for surface design in digitally printed wallpaper. Through a practice based working method, textile after-treatment techniques have been used to manipulate digitally printed wallpaper with hand-painted motives. Practices borrowed from haute couture have influenced the working method. The result is a range of design examples displaying various expressions of the techniques. The project shows that several surface materials could be applied in ways that enhance tactility and visual depth to digitally printed wallpaper, and also that methods from craftsmanship could be use to design contemporary wallpaper. The combination of techniques increases the designer’s opportunities to design wallpaper by using alternative approaches to material and surfaces. The work also strives to higher the value of handicraft, decoration and ornamentation in the design field. Another value is to strengthen the position of digital printing in the textile industry; the work encourages technical progress for creating digital print in combination with surface treatments.