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 216 for “"mould"”.
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Unidirectional solidification studies of ingot mould cast irons
… whilst solidifying in a cylindrical ceramic mould whose base is supported and closed by a water cooled copper chill. Readings from a series of thermocouples, monitoring temperatures within the iron, have enabled the establishment of a controlled solidification technique, under unidirectional …
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Critical Moisture Conditions for Mould Growth on Building Materials
… or used in damp climates may be subject to mould growth. However, all materials are not equally susceptible to mould growth. For each specific material, there is a critical moisture level. If this is exceeded, there is a risk that mould fungi will develop on the material. In a building, …
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The Kinetics of Mould growth in Aerobic Tower Fermenters
This study deals with the growth of fungi on low grade agricultural carbohydrate sources in tower fermenters. - The tower or tubular fermenter was chosen as the vessel in which to grow the fungi because of simplicity, ease of construction, low capital and working costs. The work carried out …
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Lithium-aluminium casting alloys and their associated metal-mould reactions
… Casting the alloys into sand and investment moulds creates a metal - mould reaction, the consequences of which are intolerable in the production of military hardware. The primary object of this project was to investigate and characterise the reactions occurring between the newly poured metal …
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Introducing performance into the communication curriculum for engineers: Breaking the mould
<p>Education in South Africa has, thankfully, not escaped the winds of change. The introduction of Outcomes-based Education (OBE) has generated much debate. How have technikons responded to the educational transformation impelled by sociopolitical change? I refer here specifically to the …
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Modelling of the liquid slag behaviour in the continuous casting mould
… a fluid dynamics model of a continuous caster mould region, including the transient behaviour of the steel/slag interface. The research was carried out in collaboration with ArcelorMittal Research (AMR), based in Maizieres-les-Metz in France. The industrial objective of the thesis was to …
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Business stategy and organisational performance: an analysis of the Portuguese mould industry
… performance in the context of the Portuguese mould industry. The purpose is to: " Test the applicability of Miles and Snow's strategic typology to the Portuguese mould manufacturing industry, using a series of cross-sectional studies covering the period from 1980 to 1997 in five tranches. " …
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Early Stages of the Aluminothermic Process: Insights into Separation and Mould Filling
… the separation of AT reaction products and mould filling has been carried out, using both experimental and computational methods to predict the time duration of a complete separation and to obtain a better understanding of the internal multiphase flow within the crucible and mould. The …
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Determination of the Critical Moisture Level for Mould Growth on Building Materials
The susceptibility to mould growth varies between building materials. The factors that most affect mould growth, the relative humidity (RH) and temperature also vary in different parts of buildings. One way of preventing the growth of mould in buildings is therefore to choose building materials …
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The Subjecthood of Slime Mould: modelling single-celled intelligence through living systems art
… by Heather Barnett working with the slime mould, Physarum polycephalum, a single-celled amoeba employed as a model organism within a wide range of disciplinary domains. The Physarum Experiments is an ongoing multifaceted enquiry examining nonhuman subjecthood, producing outputs in the form …
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Performance evaluation of alsi10mg mould insert material fabricated by selective laser melting process
… methods in order to produce of plastic injection mould (PIM) tools was investigated. Response surface method (RSM) and variance analysis (ANOVA) are utilized to optimize the SLM parameters and develop the mathematical models. The optimum values input parameters for laser power, scan speed and …
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Development of a cost-effective hybrid strategy for manufacturing plastic injection mould inserts
… technology with well-established conventional mould-making processes to manufacture high-performance injection mould inserts. Evaluations, analyses and development work were undertaken in three separate phases. Phase one involved the development of a novel hybrid additive-subtractive …
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Crystallisation Behaviour and Heat Transfer Phenomenon of Fluoride-free Mould Fluxes for Steel Continuous Casting
Mould fluxes provide indispensable functions for steel continuous casting, such as heat transfer control, lubrication, thermal insulation, inclusion entrapment, and oxidation prevention. Most of the commercial mould fluxes contain fluorides to ensure high steel quality, but they also bring about …
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Investigation of mould design and process parameter optimisation of plastic injection moulding for thin wall part
In plastic injection moulding industries such as automotive, packaging and medical, demands for thin wall parts increases for the reason of light weight, lower cycle time, lower part cost and higher productivity. However, a lot of challenges faced by the moulders since the mould and processing …
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Effect of titanium pick-up on mould flux viscosity in continuous casting of titanium-stabilised stainless steel
The behaviour of mould fluxes used in continuous casting of two Ti-stabilised stainless steels was investigated in terms of the level of titanium pick-up by the flux and the effect of this absorption of titanium on the viscosity of the fluxes. The two fluxes considered are respectively used for the …
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The significance of volatile antifungal metabolites produced by trichomerma harzianum biotype Th4, in green-mould disease of commercial mushroom crops /
… of A. bisporus that are likely involved in green mould disease of mushroom crops.
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Exploring the potential of Antifungal Peptides to suppress the Pathogenicity of the Botrytis cinerea and Grey Mould Disease in Grapes and Strawberries
… world and Botrytis cinerea which causes “Gray Mould Rot” (‘Botrytis Bunch Rot’) in fresh horticultural crops, is one of the crucial plant fungal pathogens in global agricultural industry. Currently, their effect has worsened due to globalization of markets and global climate change that …
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Sooty mould populations on kiwifruit: post harvest and seasonal variation : A thesis submitted in partial fulfilment of the requirements for the Degree of Master at Lincoln University
Sooty mould is a universal term used to describe the complex of superficial, Ascomycota fungi that grow upon the honeydew exudates of sap-sucking insects. These organisms form an extensive network of dense, black mycelia on the surfaces of affected leaves, fruit and other plant material. Scolypopa …
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The use of hot water treatment by small holders for the control of alternaria alternata, the cause of black mould disease of tomato
… as a non-chemical method to control the black mould disease caused by Alternaria alternata on red tomatoes. Hot water dip at 50ᴼC for 5 or 10 min was carried out on Alternaria alternata spore suspension (in-vitro), the results showed a significant (P≤0.05) reduction in germination of spores …
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