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 75 for “"Monoliths"”.
-
Exotic Monoliths
This thesis is entitled 'Exotic Monoliths', which has been defined, in the context of this thesis, as monoliths; (1) synthesised by methods not previously described in the literature, (2) synthesised from commonly used silica or organic polymer materials but whose surface has been modified with a …
-
Capillary Electrophoresis of Proteins with Selective On-line Affinity Monoliths
… Finally, a new method was developed to prepare monoliths with anion exchange functionality. Polymer monoliths were prepared by <em>in situ</em> polymerization of methacrylate monomers. The monoliths were coated with a water soluble polymer and used for the analysis of proteins. Using this …
-
Development of Polymer Monoliths for the Analysis of Peptides and Proteins
Several novel polymer monoliths for the analysis of peptides and proteins were synthesized using polyethylene glycol diacrylate (PEGDA) as crosslinker. Photo-initiated copolymerization of polyethylene glycol methyl ether acrylate and PEGDA yielded an inert monolith that could be used for size …
-
Numerical Methods for Simulation and Optimization of Chemically Reacting Flows in Catalytic Monoliths
… optimization of complex processes in catalytic monoliths to achieve better understanding of the physic-chemical processes in catalytic reactors. The fluid dynamics are modelled by the boundary layer equations (BLEs), which are a large system of parabolic partial differential equations (PDEs) …
-
Development of Densified Metal-Organic Framework Monoliths for Gas Adsorption and Separation Applications
… progress in this regard by developing MOF monoliths (<sub>mono</sub>MOFs) that possess high bulk densities and tuneable porosity. These breakthroughs have enabled record-breaking performance in volumetric CH<sub>4</sub> and H<sub>2</sub> storage applications. The fundamental aim of this …
-
μJUNITER: Automated Unification of Microservices into Modular Monoliths for Versatile Software Architecture Migration
… While many of these migrations partition monoliths into microservices, several prominent enterprises have reported having to unite microservices into monoliths to reduce management and communication overheads. The required unification is typically manual, substantial, tedious, and …
-
Development of a spatially-resolved technique for the measurement of effective diffusions and Its application to the reaction modelling of deactivated washcoated catalytic monoliths
After the energy crisis in 1970s, the impacts of increasing numbers of vehicles, including natural gas vehicles (NGVs), on global air quality has highlighted the demand to optimise existing vehicle aftertreatment systems. Increasingly stringent emission regulations in many countries lead to …
-
3D-printed adsorbents for gas separations: A material development, kinetic assessment, and process performance investigation
… the kinetic properties of printed adsorbent monoliths, and 3) assess their process performances. Objective one was addressed by developing five 3D printing techniques: i) oxide seeding and secondary MOF growth (Paper I), ii) direct ink writing of amine-modified MOFs (Paper II), iii) polymer …
-
Fabrication of Random Hole Optical Fiber Preforms by Silica Sol-Gel Processing
… alkoxides can be used to fabricate silica monoliths of tailored pore densities and sizes [4]; this makes the process attractive for random holey fiber preform manufacturing. Similar attempts have been made by Okazaki et al [5] to make conventional optical fibers. This paper chronicles …
-
Development of micro analytical devices
… and electrochemically polymerised (conducting) monoliths with dimensions in the range of 100-1000μm. The photopolymerised monoliths were characterised using hydrodynamic methods in order to study the flow profile. Electrochemical techniques were used to characterise the conducting monoliths and …
-
Preparation, characterisation and modification of porous carbon monolithic materials for chromatographic and electrochemical applications
… separations, although organic polymer-based monoliths have also been studies extensively. Within this thesis the preparation of carbon monoliths of varying flow through porosity for potential chromatographic and electrochemical applications is described. Carbon based monoliths can provide …
-
Engineering carbon nanostructures : development of novel aerogel-nanotube composites and optimization techniques for nanotube growth
… of nanotubes on the exterior surfaces of aerogel monoliths. Ta was found to grow nanotubes only after thorough reduction of its oxides. Growth with W was inconclusive. CVD growth of nanotubes throughout the interior porosity of metal-doped carbon aerogels was also achieved by templating a network …
-
Comparing the performance of different catalyst packings for Fischer-Tropsch synthesis
… length (i.e., pellet diameter). The foams and monoliths also performed poorly when compared to the catalyst powder. For monoliths and foams wash coated with ca. 0.5 g of catalyst, it was seen that CO conversion achieved was on average ca. 40% lower than that achieved over the catalyst powder at …
-
Studies of the formation of homogeneous mixed silicon-titanium/zirconium oxides by the sol-gel route
… adsorption techniques. For SiO2-TiO2 powders and monoliths, and SiO2-ZrO3 monoliths, thermal treatment has been found to significantly reduce the surface area (from 750-1.0m2g-1), pore volume (from 0.56-0.001cm3g-1') and relative number of silanol groups on the surface of the sample above 700°C. …
-
Journey & Connections
… and a series of six sculptures that resemble monoliths, strong and expressive figures of spiritual origin that represent important figures in life, sources of wisdom and stelae that connect to the earth.</p>
-
Aerogels for energy storage applications: From shape memory materials to thermites and explosives
… ranging from 300 - 1300 ⁰C. Those final monoliths were loaded with perchlorates and ignited with a flame in open air. Based on the temperature of the reduction step, monoliths either fizzled out ( ≤ 400 ⁰C), exploded violently (500-900 ⁰C), or behaved as thermites ( ≥ 950 ⁰C)"--Abstract, …
-
Integrated DNA extraction and amplification on a microfluidic device
… device. The use of thermally activated silica monoliths as the solid-phase resulted in superior DNA extraction efficiencies compared to when photo-initiated monoliths and silica beads were used.DNA amplification of up to nine forensically relevant loci was successfully achieved on the …
-
Development of a continuous flow microreactor for chemical synthesis with in-line catalysis, heating and detection
… immobilisation was carried out on silica monoliths made using Tetraethyl orthasilicate (TEOS) as a precursor which produced surface areas of 240 ±9 m² g¯¹ and porosities between 0.65 and 0.70 with nano pore diameters of 1100 ±20 nm. Functionalisation of the TEOS monoliths with palladium …
-
Crystalline, Amorphous, and Liquid Metal-Organic Frameworks at Non-Ambient Conditions
… dense amorphous, and dense recrystallised monoliths of ZIF-4, in accordance with the previously established phase diagrams. The results from mechanical testing and microstructural analysis of the monoliths correlate well, which establishes useful materials characteristics for potential …
Page 1 of 4