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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.
191

Implantation d'industries locales pour ameliorer les communautes marginales et taudis

Lefebvre, Bernard G. January 1977 (has links)
No description available.
192

The structural use of particleboard

Taylor, Jack Arnold, 1926- January 2002 (has links)
Abstract not available
193

Assessing the environmental performance of building developments : the Green Building Tool

Sheppard, Barbara Dorothea. January 2000 (has links) (PDF)
Bibliography: p. 119-122. Aims to show how the GB Tool (Green BuildingTool) can be used to access the environmental performance of residential building developments, with a focus on South Australia. Describes the history of, and rationale for, the GB Tool; and its practical implementation. Identifies some theoretical short comings of the GB Tool, as well as some practical difficulties with using it.
194

The troubled surface of architecture: John Ruskin, the human body, and external walls.

Chatterjee, Anuradha, School of Architecture, UNSW January 2008 (has links)
The meaning of the architectural surface was thoroughly reconsidered by architects and historians in England and Europe between early and mid-nineteenth century. There were two major trends. The first one was historicist. Ornament and colour was considered important because it represented the origins of architecture. The second approach was rational and tectonic. It suggested that an honest surface had to be created by emphasizing the structure and by truthfully expressing materials. An unusual response to these debates was John Ruskin??s history of medieval and Renaissance architecture. This was published as The seven lamps of architecture (1849), and the three volume study, The stones of Venice (1851-1853). Ruskin??s writings were difficult to grasp. On the one hand, they were fragmented, historically inaccurate, and lacking in explanatory power. On the other hand, they emphasized surface ornament, without ever indicating its architectural ??use??. As a result, nineteenth and twentieth century historians and architects declared Ruskin??s writings as being irrelevant to architectural theory and practice. By examining Ruskin??s writings on architecture through the theoretical lens of dress, body, and gender, the thesis demonstrates that he proposed the theory of the adorned ??wall veil??.This was a two-part theory. Firstly, architecture was defined by the presence of planar walls. The masonry structure of these walls was masked and decorated by a seamless dress-like surface, consisting of relief and polychromatic ornaments. Secondly, Ruskin distinguished between the ideal and the corrupt dress. The ideal dress celebrated the spiritual aspects of the body (surface, skin, and colour). The corrupt dress represented the scientific image of the body (depth, bones and muscles, and form). The ideal dress was reflected by the surfaces of medieval buildings, and the corrupt dress was mirrored by the Renaissance architectural surface. Through these arguments, the thesis makes two major contributions. Firstly, it shows that Ruskin??s views were consistent with the architectural modernism of the twentieth century, in which the free fa??ade and the atectonic surface were key concerns. Secondly, it establishes that Gottfried Semper??s writings were not the sole origin of the debates on dress and architecture. It shows that Ruskin developed a critical theory of dress by synthesizing debates on gender, science, and spirituality. He used this theory to suggest a new approach towards architecture.
195

Moisture and ion transport in layered porous building materials a nuclear magnetic resonance study /

Petković, Jelena. January 1900 (has links) (PDF)
Thesis (Ph.D)--Technische Universiteit Eindhoven, 2005. / Title from document title page. Title from title screen (viewed on Dec. 6, 2007). Includes bibliographical references. Available in PDF format via the World Wide Web.
196

Underlag för en kommande rivning av J-huset på Akademiska sjukhuset i Uppsala : Generell planeringshjälp vid utförande av rivning

Hermansson, Per, Isacson, Johan January 2008 (has links)
<p>This report is about planning a demolition. The purpose of this report is that it should become a base for a demolition of house J at the Academic hospital in Uppsala, and also to make general help for planning a demolition. This report also contains a part about how a change in the work environment affects general people. The work started with studies of literature and design of the general part of the report and then continued with a practical study of house J. From the experience of the first two parts of the report a general help for planning a demolition was shaped. Today in the demolition industry the most common and effective way to demolish a building is to do it selective and that means, taking the building down part by part depending on the grade of separation. The recommendation for the demolition of house J is to do it selective. “Thinking” about the demolition in the building phase of a house helps to reduce the environmental effects of the demolition and makes it easier to carry out. Planning a building should be done in a long term perspective to make it easier to cope with activity changes, rebuilding and complementary building. When a building is due for demolition it’s important to know everything about the construction of the building and it’s materials to make a good demolition plan both economic and environmental.</p>
197

The natural background gamma radiation exposure in the metropolitan area of the Valley of Mexico /

Jones, Mary Feild. January 1982 (has links)
Thesis (Ph. D.)--University of Texas Health Science Center at Houston, School of Public Health, 1982. / Dissertation Abstracts International order no. 83-16537. Includes bibliographical references (leaves 181-192).
198

The Sink-Effect in Indoor Materials : Mathematical Modelling and Experimental Studies

Hansson, Peter January 2003 (has links)
In this thesis the sink-effect in indoor materials wasstudied using mathematical modelling and experimental studies.The sink-effect is a concept which is commonly used tocharacterise the ability of different indoor materials to sorbcontaminants present in the indoor air. The sorption process ismore or less reversible, i.e. molecules sorbed in materials athigh contaminant concentrations may again be desorbed at lowerconcentrations. Knowledge of the sorption capacity of materialsand the rate at which sorption and desorption takes place is offundamental importance for mathematical simulation of indoorair quality. The aim of this work is to contribute withknowledge about how the sink-effect can be described inmathematical terms and how the interaction parametersdescribing the sorption capacity and sorption/desorptionkinetics can be determined. The work has been of amethodological nature. The procedure has been to set upphysically sound mathematical models of varying complexity andto develop small-scale chamber experiments. Two differentdynamic chamber methods have been used. One is based on amodified standard FLEC-chamber while the other uses a chamberwith two compartments, one on each side of the material. The"twin-compartment" method was designed due to the observationthat the contaminant readily permeated straight through theselected materials, which resulted in uncontrolled radiallosses in the FLEC-chamber. In order to be useful forcomparison between experiments and calculations and parameterfitting, the boundary conditions in the chambers must beprecisely known and controlled. This matter has shown to be themost crucial and difficult problem in the research. A varietyof mathematical models for the sink-effect have been proposed.In some models advanced fluid simulations were used in order totest the influence ofill-defined flow boundary conditions. Theaim of the modelling is to find a formulation with a minimum ofinteraction parameters, which is generally useful, i.e. both insmall-scale laboratory environments and in full-scale like anoffice room. Estimated model parameters are shown to be able toyield a reasonably good fit to experimental data for thesorption process but a less satisfactory fit for the desorptionprocess. <b>Keywords:</b>sink-effect, sorption, adsorption, diffusion,indoor air quality, volatile organic compounds, VOC,contaminants, building materials
199

Volatile organic compounds from microorganisms : identification and health effects

Claeson, Anna-Sara January 2006 (has links)
Damp building materials are subjected to degradation processes due to moisture and also microbial growth, with both of these giving rise to emissions of volatile organic compounds (VOCs) that may contribute to indoor air health problems. The overall aim of this thesis was to investigate emissions of reactive and non-reactive VOCs from damp building materials and from the microorganisms growing on them, and also to investigate the possible health impact of these compounds. Three studies were carried out in order to study emissions of VOCs. The first investigated emissions from a mixture of five fungi (Aspergillus versicolor, Fusarium culmorum, Penicillium chrysogenum, Ulocladium botrytis and Wallemia sebi) and the second emissions from the bacterium Streptomyces albidoflavus. In both studies the microorganisms were cultivated on three different building materials (pine wood, particle board and gypsum board) and one synthetic media, MEA and TGEA respectively. The bacterium was also cultivated on sand. Air samples from the cultures were collected on six different adsorbents and chemosorbents to sample a wide range of compounds such as VOCs, aldehydes, amines and light-weight organic acids. The samples were analyzed with gas chromatography, high-pressure liquid chromatography and ion chromatography. Mass spectrometry was used for identification of the compounds. Alcohols and ketones were the predominant compound groups identified. The bacterial culture growing on TGEA emitted ammonia, methylamine, diethylamine and ethylamine. The third study dealt with secondary emissions collected from buildings with moisture and mould problems. Samples were taken when the materials were dry and also after they had been wet for a week. Most alcohols and ketones could be identified from the wet materials. Trimethylamine and triethylamine, were identified from sand contaminated by Bacillus. One study looked at the development of a method for analysis of primary and secondary amines with LC-MS/MS. A three-step process was developed, with the first step screening the samples for NIT derivatives with selected reaction monitoring, SRM. In the second step a precursor ion scan gave the [M+H]+ ion, and the last step involved fragmentation with a product ion scan. It was possible to separate and identify all the investigated amines, which showed that the method was both specific and selective and therefore well suited for the analysis of amines in complex environments. The last study comprised two exposure studies. In study 1 each participant took part in two exposure conditions, one with air from mouldy building materials and one with blank air for a 60 minute period. In study 2 each participant was exposed four times (for a period of 10 min) at random to air from mouldy building materials and blank air, with and without nose-clip. The participants rated air quality and symptoms before, during and after each exposure. Exposure to moderate VOC levels resulted in reports of perceived poor air quality, but no such results were received when exposing the participants to low VOC levels.
200

Integrated environmental assessment methods as a tool for sustainable design : some case studies

Strömberg, Larissa January 2005 (has links)
QC 20100930

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