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 20 for “"Biodeterioration"”.
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Fungal biodeterioration of synthetic metal working fluids
A survey was undertaken to determine the relative incidence of fungal biodeteriogens in contaminated in—service samples of synthetic and oil emulsion metal working fluids, and a list of isolates is submitted. A technique for assessing the concentration of surface—active components of both synthetic …
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The role of actinomycetes in the biodeterioration of wood
The role of actinomycetes in the biodeterioration of wood was reviewed and found to be unclear. Twenty Streptomyces isolates previously isolated from decayed wood were characterised according to the criteria of the International Streptomyces Project. Discrepancies between keys developed for …
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Control of Biodeterioration of Sandstone on the Fisher Fine Arts Library
… rain so no apparent colonization is seen there. Biodeterioration is any undesirable change in the properties of a material caused by the vital action of organisms. The most used methods to control and prevent biodeterioration are to eliminate biocolonization through the application of biocides. …
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An Evaluation of the use Patterns of a Specialised Information Centre in Biodeterioration
… subjects. The first SIC was the Biodeterioration Information Centre (BIC) and it has gradually developed a range of services for the biodeterioration community. Its service development was accompanied by investigations into BIC organisation and input but the present study is the …
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Some Investigation into the Susceptibility and Resistance to Industrial Biocides of Fungi Important in Textile and Polyurethane Biodeterioration
… materials, and the problems associated with the biodeterioration of these materials and its prevention are discussed from both biological and economic aspects. The necessity for biocidal protection of these materials is emphasised, and a family of new organic industrial biocides is described, …
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Some aspects of the microbiological properties of polymers and composite materials
… examined following reports of severl! fungal biodeterioration. Although GRP was not previously associated with substantial microbial growth, small amounts of microbial activity would pose problems for products associated with comestible materials. The microbiology of the raw materials was …
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The Growth of Streptomycetes and Fungi Under Controlled Conditions on the Surface of Coated Materials
… Soil burial is the standard test for microbial biodeterioration of materials and evaluation of biocides used to protect them, but is extremely variable. Pure culture techniques were employed to evaluate two factors, moisture availability and the action of Streptomycetes (particularly …
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An investigation into marine biofouling and its influence on the durability of concrete sea defences
… inclusions facilitates a complex process of biodeterioration. Bacterial filamentous growth around and through synthetic fibres embedded in the new concrete mix, appears to be detrimental to the long term durability of synthetic fibres. Subsequent algal colonisation on the surface of newly …
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The Effect of Green Insulation Standards on Moisture Accumulation within Framing of Residential Structures
… insulation may increase risk of moisture-related biodeterioration of the building enclosure. After review of points awarded for insulation materials within LEED for Homes and the National Green Building Standard, results from this study imply that the National Green Building Standard does not …
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Some Aspects of the Colonisation and Decay of Fungicidally-Protected Cotton Textiles by Soil Fungi
Problems associated with the biodeterioration of cotton, including testing and economic aspects are considered. The studies focus upon the use of pentachlorophenyl- laurate (PCPL) fungicides, which are among those most widely used for textile protection. Aspects of some major types of techniques …
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Service to an Interdisciplinary Need-group from Computerised Secondary Services
… literature published in 1969, collected by the Biodeterioration Information Centre, was taken as typifying the reference requirement of a specialised need-group. Its coverage by Chemical Abstracts Condensates, Chemical Biological Activities, Chemical Titles, BA-Previews, MEDLARS, Food Science …
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The application of the soft impression technique to evaluate flow stress, creep and frictional deformation of polycrystalline diamond and cubic boron nitride
Metal shaping processes are clear examples of engineering applications where a hard material is worn by a softer one - i.e. the tool and workpiece respectively. The soft impressor technique, introduced by Brookes and Green (1973), has proved valuable in measuring the relevant mechanical properties …
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Concrete ecological enhancement in the temperate marine environment
… and it is suggested that bioprotective and biodeterioration of concrete substrates occur in tandem. Some species may offer more bioprotection than others, including calcareous encrusting species like oysters and barnacles. Finally, this section concludes with an experiment comparing the …
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TLM models of deformation and their application to vitreous china ware during firing
During firing, the deformation of ceramic articles under their own weight may be problematic particularly in the sanitary ware industry where articles are large. A model has been developed that predicts the viscoelastic deformation of a range of vitreous china testpieces during the firing process. …
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The influence of nitrogen on the plasticity of diamond
The aim of this work has been to use the soft impressor technique to investigate the plastic deformation of single crystal diamond and in particular to determine the effect that single substitutional nitrogen has on plasticity.Traditionally hardness tests in the form of Vickers or Knoop rigid …
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Biogenic acid corrosion of sewer concretes with different binders: in-situ and model studies, with advancement of the life factor prediction method
Biogenic Acid Corrosion (BAC) is the biodeterioration of concrete caused by biological and chemical activities of bacteria that grow in an acidic environment. Such environments are typical in sewer systems, which collect wastewater from households, industries, and urban and storm water runoff, and …
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Spatiotemporal Dynamics of Microbial Communities Colonizing Plastic Tent Fabrics in a Tropical Environment
<p>Plastic polymers provide immense utility in almost all industries. However, their mass production and persistence in natural ecosystems has resulted in a significant accumulation of plastic waste in our biosphere. To protect structurally important plastic products from degradation as well as …
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Biological growth on mineral façades
During the last years there has been reported considerable and rapid contamination on newly built rendered façades in Sweden due to biological growth. The problem is believed to occur mostly on façades of render applied on thermal insulation, but apart from this it is difficult to find clear …