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 432 for “"STABILISATION"”.
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A new soil stabilisation technique
This work describes a novel method of soil stabilisation at meso-scale which involves mixing into the soil molecularly oriented mesh elements in the form of squares, rectangles or ribbons. Laboratory compaction, CBR, permeability, triaxial, repeated loading, long term loading (creep) and model …
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UV stabilisation of poly(ethylene terephthalate)
The aim of this project was to design novel polymerisable UV absorbers which successfully protect PET from UV degradation for a longer duration of time compared to non-polymerisable UV stabilising additives. The polymerisable UV stabilisers for PET were synthesised using cyanuric chloride as a …
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Biologically Inspired Engineering for Protein Stabilisation
… Here, a biologically inspired vaccine stabilisation method is proposed. The method is based on the fact that proteins entrapped in the fossil avian eggshell crystals are well preserved up to thousands of years in Africa where high-temperature vaccine stability is needed. The persistence …
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Photoalignement et stabilisation des cristaux liquides ferroélectriques
Ce projet a pour but d'obtenir un cristal liquide ferroélectrique (CLF) aligné et stabilisé par un réseau polymère. La technique démontrée dans ce mémoire diffère de la technologie utilisée présentement puisqu'elle fait appel à la lumière, au lieu des surfaces frottées, d'un champ électrique ou …
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Topics in Type IIB Kähler Moduli Stabilisation
… in a comprehensive study of Kähler moduli stabilisation within Type IIB flux compactifications, combining advanced numerical techniques with analytical methods. Our JAX-based computational framework enables efficient scanning of the UV parameter space, while incorporating α′ corrections, …
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The mechanisms of melt stabilisation of polyolefins
… cupric stearate acted efficiently during melt stabilisation of polymers, however they were both ineffective as thermo-oxidative antioxidants and UV stabilisers. Although the melt stabilisation effectiveness of stable nitroxyl radicals (e.g. 4-hydroxy, 2,2,6,6-tetra methyl piperidineoxyl and …
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Degradation and stabilisation of diisocyanate cured polybutadiene
Hydroxyl terminated polybutadiene (HTPB) has been used as a rocket propellant binder which is required to be stored for at least twenty years. It is found that the excellent stress-strain characteristics of this propellant can be totally lost, during this long storage, due to the deterioration of …
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Stabilisation of isocyanate cross linked polybutadiene binder
Isocyanate cross-linked hydroxy terminated polybutadiene is used as a binder for solid rocket propellant. Rocket motors containing this propellant require a storage life of at least 20 years. During storage it has been found that the important rubbery properties of the binder can be lost due to …
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Stabilisation of diazo compounds used in lithographic systems.
The research undertaken has been an investigation of the deterioration that occurs during lithographic plate manufacture and storage. The aim of the research was to identify and eliminate the causes of the deterioration. Deterioration was found to be due to the presence in the formulation of …
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Sulfate soil stabilisation with silica fume-based binders
… and promote a more sustainable sulfate soil stabilisation technique.
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Stabilisation of sulphide rich soil: problems and solutions
… the findings from this thesis indicate that soil stabilisation with lime and GGBS is particularly effective for naturally occurring sulphide rich clay soils (such as the LOC) and is an environmentally friendly alternative to PC-stabilised soils.
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Use of thermo-active piling for slope stabilisation
Accidents caused by formation of ice on the asphalt layer of roads during the winter season and the failure of the earth structures on which roads are built often make the headlines due to the significant impact they can have on the transport of people and goods. A novel method, namely …
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Stabilisation of dehydrated nanoemulsions using sugar - protein matrices
There are numerous review papers discussing liquid nanoemulsions and how they compare to other emulsion systems. Little research is available on dried nanoemulsions. The objectives of this research were to (i) study the effect of varying the continuous phase of nanoemulsions with different …
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Flame Stabilisation in the Transition to MILD Combustion
Emissions reduction and energy management are current and future concerns for governments and industries alike. The primary source of energy worldwide for electricity, air transport and industrial processes is combustion. Moderate or intense low oxygen dilution (MILD) combustion offers improved …
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The Thermal Stabilisation of Austenite at Sub-Zero Temperatures
The literature relating to the thermal stabilisation of austenite has been reviewed with particular reference to the mechanisms proposed by various workers to account for the phenomenon. The complex interactions between martensite transformation and stress have also been discussed in order to …
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Resonance Tracking and Vibration Stabilisation of Ultrasonic Surgical Instruments
Ultrasonic surgical instruments actuated by piezoelectric transducers are usually driven at relatively high power levels to generate high vibration amplitude at the probe, which interact with biological tissues to achieve the desired effects. In operation, the high power level introduces …
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Visual Feedback Stabilisation of a Cart Inverted Pendulum A
Vision-based object stabilisation is an exciting and challenging area of research, and is one that promises great technical advancements in the field of computer vision. As humans, we are capable of a tremendous array of skilful interactions, particularly when balancing unstable objects that have …
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Stabilisation of metal nanoparticles by confinement on curved supports
… thesis seeks to investigate a novel nanoparticle stabilisation approach by physical confinement on curved supports. Specifically, the project focusses on the stabilisation of cobalt and gold nanoparticles on nanostructured -Al2O3 supports, motivated by the industrial interest of Sasol UK. The …
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Performance of phase noisy optical systems with frequency stabilisation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1991.
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Optimisation and implementation of fuzzy controllers for power system stabilisation
This thesis investigated the application of fuzzy controllers as real-time power system stabilisers for single-machine and two-machine infinite bus power systems.
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