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 16 of 16 for “"Oil analysis"”.
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The characterization of olive oils by various chromatographic and spectroscopic techniques
… set of analytical methods to characterize olive oil in terms of geographical origin, variety and extraction technology. Emphasis was also placed on the analysis of high quality extra virgin oils adulterated with lower quality sunflower oil.<br/><br/>This research involved the study of novel …
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An artificial neural network approach to transformer fault diagnosis
… (ANN) approach to diagnose and detect faults in oil-filled power transformers based on dissolved gas-in-oil analysis. The goal of the research is to investigate the available transformer incipient fault diagnosis methods and then develop an ANN approach for this purpose. This ANN classifier …
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Vibrating CPD Chemical Degradation Oil Sensor
Oil analysis is a broad field comprised of hundreds of individual tests that provide meaningful benefit by assessing one or more properties of lubricants or machines. Many tests are performed on new types of oil during research and development. The lubricants chemical, physical, or lubricating …
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Fluctuations in resistivity in the Tuscaloosa Marine Shale, southwest Mississippi and southeast Louisiana
… target for the exploration and production of oil. Spurred by early estimates of over 7 billion barrels of oil in place, the target region for this production is the basal portion of the shale where a continuous increase in resistivity greater than 5 Ohmm can be observed. This increase was …
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Development of a state prediction model to aid decision making in condition based maintenance
… In developing thesemodels, we used vibration and oil analysis data. Note that understanding, manipulatingand analysing of the data played an important role in this thesis. This is needed not onlyfor model development, but also for validating the model. Methods for estimatingmodel parameters are …
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Catalytic pyrolysis of agricultural residues for bio-oil production
… plants, were employed as raw materials for bio-oil production via fast pyrolysis technology. There were two main objectives of this project. The first one was to determine the optimum pyrolysis temperature for maximising the organics yield and to investigate the properties of the bio-oils …
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Design and prototype of dual loop lubricant system to improve engine fuel economy, emissions, and oil drain interval
… engine durability constraints. Recent limits on oil additives, driven by emissions aftertreatment requirements, impose additional design tradeoffs. The benefit of segregating lubrication systems, in light of modern formulation constraints, is investigated through modeling and experiment. Many …
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INVESTIGATION OF SUCCINIMIDE DISPERSANTS AND THEIR INTERACTIONS USING REDUCED TOTAL OIL VOLUME LUBRICANT DEGRADATION
Reduced Total Oil Volume RTOV sampling was developed from reduced sump sampling. The technique involves alterations to an engine enabling the total volume of lubricant within the engine to be reduced, without altering the basic function or operation of the engine. Critical regions where large …
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An Evaluation of the Effects of Marine Oil-spills, Remediation Strategies, and Shipwrecks on Microbial Community Structure and Succession
The evaluation of how Bacteria respond to oil-contamination, and the application of dispersants and biosurfactants, in North Sea seawater microcosms is the focus of Chapter Two. Analysis revealed that dispersants and biosurfactants, which significantly reduced the interfacial tension between oil …
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Artificial Intelligence Applications in the Diagnosis of Power Transformer Incipient Faults
… The fault diagnosis is based on dissolved gas-in-oil analysis (DGA). A literature review showed that the conventional fault diagnosis methods, i.e. the ratio methods (Rogers, Dornenburg and IEC) and the key gas method, have limitations such as the "no decision" problem. Various AI techniques may …
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Comprehensive study of a heavy fuel oil spill : modeling and analytical approaches to understanding environmental weathering
Driven by increasingly heavy oil reserves and more efficient refining technologies, use of heavy fuel oils for power generation is rising. Unlike other refined products and crude oils, a large portion of these heavy oils is undetectable using the traditional gas chromatography-based techniques on …
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AUTOMATION OF ACID AND BASE NUMBER DETERMINATIONS OF NEW AND USED LUBRICATING OILS
… employed to determine the extent of lubricating oil degradation and engine wear. For many operators these programmes have resulted in significant cost savings by promoting a more efficient and effective servicing schedule. In the field of lubricating oil analysis several properties of the oil are …
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Comprehensive study of a heavy fuel oil spill : modeling and analytical approaches to understanding environmental weathering
Driven by increasingly heavy oil reserves and more efficient refining technologies, use of heavy fuel oils for power generation is rising. Unlike other refined products and crude oils, a large portion of these heavy oils is undetectable using the traditional gas chromatography-based techniques on …
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Studies of Monitoring and Diagnosis Systems for Substation Apparatus
… for power transformers based on dissolved gas analysis, ANNEPS v4.0, was developed. The new tool extended the existing expert system and artificial neural network diagnostic engine with automated data acquisition, display, archiving, and alarm notification functions. This thesis also studied …
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Waste heat recovery from a high temperature diesel engine
… temperature differences of the coolant, engine oil, and exhaust flow streams into and out of the engine. Custom cooling and engine oil systems were fabricated to provide adequate adjustment to achieve target coolant and oil temperatures and large enough temperature differences across the engine …
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Diseño de un plan de mantenimiento preventivo para los brazos hidráulicos de grúas de la empresa Montajes de Ingeniería de Colombia Micol S.A
En este documento se plantea la implementación de un plan de mantenimiento preventivo para los brazos hidráulicos de la empresa montajes de ingeniería de Colombia – Micol S.A, mediante el análisis de aceite tomado a un determinado número de vehículos. Primeramente, se presenta una exploración al …