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.
Results
Showing 1 to 20 of 155 for “"Chemical technology"”.
-
The Social Construction of Technology: The Case of LSD
In this study, I use SCOT (Social Construction of Technology) theories to trace the history of lysergic acid diethylamide-25, which is commonly known as LSD. I show how the technological system of LSD corresponds to phases designated by SCOT theorist Thomas Hughes, specifically invention, …
-
Physico-Chemical Characterisation of Disease-Related Protein-Protein Interactions in Solution
… use of microfluidic techniques combined with chemical kinetic and thermodynamic analyses to study the mechanism of the disaggregation of $\alpha$-synuclein fibrils with Hsc70 along with its co-chaperones DnaJB1 and Apg2 as well the interaction between BRICHOS and amyloid fibrils. These …
-
Rawatan larut resapan menggunakan penjerap media komposit karbon teraktif, zeolit, batu kapur dan enapcemar sisa kertas
Kajian ini dijalankan bagi meneroka potensi WPS dan LS untuk menggantikan sebahagian AC dan ZEO dalam penghasilan media komposit baharu. Nisbah optimum AC-WPS (media hidrofobik) adalah 2:2, manakala ZEO-LS (media hidrofilik) adalah 25:15. Nisbah optimum 4:4 media hidrofobik-hidrofilik dipilih …
-
Physical and electrical properties of Li1+xTi2-xAlx(PO4)3 and Li1+2xTa1-xAlx+1(PO4)3 electrolytes
Sodium superionic conducting materials (NASICON) are promising solid electrolytes for Li-ion rechargeable batteries. In this study, two compositions; lithium titanium aluminium phosphate (LTAP), Li1+xTi2-xAlx(PO4)3 (x = 0.0, 0.2, 0.6, 1.0) and lithium tantalum aluminium phosphate (LTaAP), …
-
Jatropha curcas oil as a bio-based rejuvenating agent for reclaimed asphalt pavement mixtures
… test, diffusion test, rheological properties, chemical properties and mixtures performance test, respectively. The test results show that the incorporation of JCO with virgin binder decreased the viscosity and improved the visco-elastic properties of the rejuvenated binder. Viscosity reduction …
-
The sol-gel synthesis of anti-stokes luminescent glass materials
… that rare earth doped oxide glasses, whilst chemically durable and relatively easy to manufacture, have weak anti-Stokes emissions, whereas rare earth doped fluoride materials have considerably improved anti-Stokes luminescence but are less chemically stable and highly reactive. Recent …
-
Study of the thermal behaviours of intumescent silicate materials
The fire retardant properties of inorganic silicate based materials were characterised by Thermal, Infrared (IR), Karl Fischer (KF), Mass Spectrometry (MS) and Cone Calorimetry (CC) techniques. Scanning Electron Microscopy (SEM) was also employed to study the sample morphologies. In this study, …
-
Oxygenated hydrocarbon fuels for solid oxide fuel cells
In order to mitigate the effects of climate change and reduce dependence on fossil fuels, carbon-neutral methods of electricity generation are required. Solid oxide fuel cells (SOFCs) have the potential to operate at high efficiencies, while liquid hydrocarbon fuels require little or no new …
-
Development and application of time-temperature integrators to thermal food processing
This thesis describes the research and development into a range of time-temperature integrators (TTIs) for the measurement of process values for food heat treatments. The TTIs are based on the first order thermal degradation of bacterial \(\alpha\)-amylases. Two new TTIs are described, one for mild …
-
Process integration of cell disruption and fluidised bed adsorption of microbial enzymes: application to the retro-design of the purification of L-asparaginase
… UpFront Chromatography) were physically and biochemically evaluated for such direct product sequestration. Differences in performance with regard to product capacity and adsorption/desorption kinetics were demonstrated and are discussed with respect to the designof adsorbents for specific …
-
Modelling and Control of Chemical Processes using Local Linear Model Networks
Recently, technology and research in control systems have made fast progress in numerous fields, such as chemical process engineering. The modelling and control may face some challenges as the procedures applied to chemical reactors and processes are nonlinear. Therefore, the aim of this research …
-
Low velocity impact response of laminated textile coir-aramids/epoxy hybrid composites subjected to transverse penetration loading
… materials and contributes towards green technology which will be of great benefit to the industry and community.
-
Enhancement of antifouling properties using rice husk silica particles in polysulfone membrane and optimization of its operating condition
This study investigates the effects of rice husk silica (RHS) as additive in the polysulfone membrane to enhance antifouling properties in membrane separation process. The flat sheet PSf/RHS membrane was prepared via phase inversion technique. The characterization and performance test were …
-
Nickel aluminide coating as catalyst in steam methane reforming microreactor
The catalyst deposition in microreactor for steam methane reforming (SMR) on a micro-scale poses new opportunities due to lack of literatures. Using plate-type catalyst as a basis, a foundation work on the preparation and analysis of catalyst deposition, specifically by dip coating (DC) method was …
-
Polyurethane foam from oil palm fruit waste: synthesis and characterization of biopolyol and foam properties
… samples were characterized through the physical, chemical, thermal, mechanical and morphological analysis. The optimal liquefaction conditions were determined to be PW/PEG400 = 1/3, 5 % acid loading, and liquefaction at 150 °C for 120 min. The results revealed that more than 50 % of the oil palm …
-
Physico-chemical properties of polypropylene glycols
Poly(propylene glycol) (PPG) samples of different molecular mass were characterized using differential scanning calorimetry, modulated differential scanning calorimetry, thermogravimetry and thermally stimulated current (TSC) spectroscopy. It was shown, by TSC, that the glass transition temperature …
-
The effect of pellets physical properties on handling pelleted biomass material in practical use
This research investigated two important aspects of wood pellet production and use; (a) the effect of varying pelleting process parameters (i.e. steam moisture content, conditioning temperature) and feedstocks species (Pine and Alder wood powder) on the mechanical strength and durability of the …
-
Molecular structure and antibacterial function of hop resin materials
Spoilage of beer by lactic acid bacteria (Lactobacillus spp., Pediococcus spp.) has considerable economic significance. Compounds derived from the hop (Humulus lupulus) possess antibacterial activity but their role in prevention of beer spoilage has been disputed. Prior to the present study, the …
-
Glycerol from novel strains of halophytic microalgae
… a new biofuel which underpins a commercial CHP technology as a result of the novel McNeil combustion cycle patented by Aquafuel, UK. This research explored glycerol production in new strains of halotolerant microalgae Dunaliella (T35, T36 and T37) and Asteromonas (T33a, T33b and T33c) obtained …
-
Development of a test protocol for industry to predict and optimise flow behaviour of blended powders utilising particle to bulk scale models
… by The Wolfson Centre for Bulk Solids Handling Technology, University of Greenwich is now available for industry to measure quickly and accurately the flow behaviour of single and blended particulate materials. This new powder flow tester helps to characterise quantitatively the blends which …
Page 1 of 8