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 58 for “"processing temperature"”.
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Integration of Ferroelectric Materials into High Density Non-Volatile Random Access Memories
… Such a configuration poses constraints on the processing conditions of the ferroelectric capacitor in addition to the already existing reliability issues of a ferroelectric capacitor. The current research is an attempt to integrate the ferroelectric capacitor directly into a high density memory …
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Uji in vitro pengaruh jenis tepung cacing tanah (Lumbricus rubellus dan Pheretima aspergillum) dengan variasi suhu pengolahan (50o C, 60o C, dan 70o C) terhadap penghambatan pertumbuhan bakteri Salmonella typhi
… But unappropriate in species choosing and processing temperature will result earthworm flour that insufficiently qualified in settle bout of Salmonella typhi bacteria. So, this research intent to know species and optimal processing temperature for earthworm flour makings that beneficent …
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Microstructure of Flash processed Steel Characterized by Electron Backscatter Diffraction
Flash processing is a new heat treatment process being developed to produce steel with relatively high strength and ductility. It involves rapidly heating steel sheet or strip to a temperature in the austenite range and quenching; the entire thermal cycle takes place within 15 seconds. The …
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Temperature and mold size effects on density gradients and mechanical properties in a polyurethane foam system
… foam; This work will investigate the effects of processing temperature and mold size on the average density, density gradient, compressive modulus, and compressive strength, for a molded free rise, water blown polyurethane foam system. Four processing temperatures are used during foam …
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The development of process technology for the friction stir welding of thick section aluminium alloys
… with rotational speed, applied force and processing temperature can account for joint formation during FSW (friction stir welding).
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Process and Material Modifications to Enable New Material for Material Extrusion Additive Manufacturing
… was conducted at two opposing ends of the FFF-processing temperature: low processing temperature (<100 °C) for pharmaceutical applications and high processing temperatures (>300 °C) for high-performance structural polymer applications. Both applications lie outside the typical range for FFF …
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Generation of Recyclable Liquid Crystalline Polymer Reinforced Composites for Use in Conventional and Additive Manufacturing Processes
… can form the reinforcing TLCP fibrils during processing avoiding the fiber breakage problem. The first part of this dissertation is to study the influence of mechanical recycling on the properties of injection molded TLCP and glass fiber (GF) reinforced polypropylene (PP). The processing …
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Near room temperature lithographically processed metal-oxide transistors
A fully lithographic process at near-room-temperature was developed for the purpose of fabricating transistors based on metal-oxide channel materials. The combination of indium tin oxide (ITO) as the source/drain electrodes, zinc indium oxide (ZIO) as the semiconducting channel, and parylene as the …
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Polylactic acid/thermoplastic tapioca starch blend incorporated with selected essential oils for active food packaging
… in PLA/TPTS blend. The results show that 125 C processing temperature, 15 wt% glycerol, 45 wt% water and 3.5 wt% vinegar loading were optimum parameters for TPTS production. Whereas, 185C processing temperature and 25 wt% TPTS loading are optimum parameters for PLA/TPTS blend production. Citral …
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The grinding of polyethylene powders for use in rotational moulding
… parts.<br/><br/>Grinding trials identified the processing temperature, cooling temperature and post heating temperature as having the major effects on polyethylene powder quality. In general it was found that quality was improved by annealing the powders at high processing temperatures or over …
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Effects of stress on material properties, intrinsic and extrinsic behavior, and electromechanical response of stress-biased actuators
… material (LaRC-SI). On cooling from the processing temperature, the difference in thermal expansion between layers creates a unique dome structure with high internal stress. Thunder™ actuators were studied to provide insight into the fundamental effects of stress on the electromechanical …
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Hot melt extrusion (HME) processing for the development of lipid oral solid dosage forms
… ‘hot’ and pre-mix’ by applying changes in processing temperature, drug/lipid ratio and composition of the formulation processed by HME and subsequent compression into tablets were investigated. The characterization using differential scanning calorimetry (DSC) and X-ray powder diffraction …
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Lactoperoxidase System Effects on Escherichia Coli K-12 in the Manufacture of a High Moisture and High pH Cheese (Queso Fresco)
… is not completely inactivated at pasteurization temperatures; however, its activity decreases with the increase in the processing temperature. Reduced lactoperoxidase activity results in the reduction of antibacterial effects on a gram negative coliform, Escherichia coli K-12. Lactoperoxidase …
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Melt Processing of Metastable Acrylic Copolymer Carbon Precursors
… fiber precursors) that occurs as melt spinning temperatures are approached. The following set of analyses was developed to define the rheological properties required for a melt processable acrylic copolymer suitable for use as a carbon fiber precursor, and accordingly facilitated development of …
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Telechelic Polyetherimides with Functionalized End Groups for Enhancement of Mechanical Strength, Flame Retardancy, and Optical Properties
… first challenge in PEI application is its high processing temperature and viscosity. Therefore, two supramolecular strategies were applied to not only solve the problem of high processing temperature or viscosity but also enhance the mechanical and flame retardancy. In addition, the yellow to …
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A study of mechanochemical reactions of spin traps in hydrocarbon polymers
… the nature of spin trap and radical generator, processing temperature, and irradiation time. The nitroxyl yield and % bound nitroxyl of the spin traps improved significantly in the presence of Trigonox 101 and 2-0H benzophenone. The effect of these spin traps used as normal additive and their …
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Sintering of Micro-scale and Nanscale Silver Paste for Power Semiconductor Devices Attachment
… demonstrated the superior properties. The high processing temperature, however, prevents its application of interconnecting power semiconductor devices. This research focuses processing and characterization of micron-scale and nanoscale silver paste for power semiconductor devices attachment. …
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Hot-melt mixing of partially miscible active pharmaceutical ingredient-polymer mixtures
… form. HME can be carried out at two process temperature regimes: one where T_{process} > T_m of the drug and the T_g of the polymer (or the T_m for the case of semi-crystalline polymers); the other at T_m > T_{process} > T_g (T_m for the case of semi-crystalline polymer). Processing below the …
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Rheological Considerations for Dual-Extrusion Melt Processing of Dissimilar Polymers in Composite Structures
… used to overcome a wide gap between the maximum processing temperature of the UHMW resin and the minimum processing temperature of the substrate resin and to avoid the high melt viscosity of the UHMW resin, but requires the costly recovery of toxic solvents. The UHMW resin is used because it …
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Stress measurement and development of zirconium diboride-silicon carbide ceramics
… ZrB₂ phase was under ~450 MPa tension at room temperature. It was also discovered that stresses began to accumulate at ~1400 ⁰C upon cooling from the processing temperature (1900 ⁰C -2000 ⁰C). Raman spectroscopy and x-ray diffractions agreed well with one another and showed the stresses in the …
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