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 42 for “"phase transition temperature"”.
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The Influence of Lipid Composition on the Binding of LDL to Chondroitin 6-Sulphate
… that were studied for each LDL sample were phase transition temperature, phospholipid content, free cholesterol content, cholesteryl ester content, triglyceride content, and size. Correlations of these characteristics with LDL-C6S binding were analyzed using a turbidity assay. Our results …
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Superlattice formation in group IV-B transition metal dichalcogenides
… a 2ao x 2co super1attice forms in TiSe2 at low temperature. Strong diffuse scattering is observed above T. An optically active far-infrared lattice mode is observed which c breaks up into several additional modes below the phase transition. In the infrared study, there is a dramatic shift in the …
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Diffusion of titanium and niobium in b.c.c. Ti-Nb alloys
… Ti94.6, Ti80.4, Nb19.6 and Ti64.3Nb35.7 over the temperature range from 9S0°C to 1511°C using 643 3S standard lathe sectioning techniques. The samples were initially heat treated by annealing above the a-B phase transition temperature and then either cooling slowly to room temperature or …
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Analyses and predictions of ultrasound interactions with model biomembrane systems via two-state transition model
… ultrasound interactions near to the lipid phase transition temperature. The enhanced ultrasound absorption spectra closely resemble single relaxation spectra, suggesting that the membrane constituents undergo a simple two-state transition. The temperature dependence of the relaxation …
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The effects of polymer-controlled hydration on nuclear magnetic resonance parameters
… splitting (Avg), the gel to liquid crystalline phase transition temperature (Tn,), the spin-lattice relaxation times and the spin-spin relaxation times were investigated as the membrane was dehydrated. Both Avg and Tn, are hydration dependent but no systematic change in the relaxation times was …
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A Thermal Switch from Thermoresponsive Polymer Aqueous Solutions
… switch more compact, I try to use second-order phase transition material to enable our thermal switch. Noticing the transition properties of thermoresponsive polymer for drug delivery, its potential in thermal switch can be expected. I used Poly(N-isopropylacrylamide) (PNIPAM) as an example to …
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Synthesis of Chemically Stable VO2 Particles Using Green Solvents and their Application as Smart Coatings
… solar transmission in response to environmental temperature changes. Of the potential thermochromic materials, vanadium dioxide (VO2) is known to display a fully reversible semiconductor-metal transition (SMT). VO2 responds thermochromically to environmental temperature changes by changing its …
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Synthesis and self-assembly of multiple thermoresponsive amphiphilic block copolymers
… copolymers in dilute solution. Reversible, temperature sensitive peak splitting of the TMS-signals in NMR spectroscopy was indicative for the formation of mixed star-/flower-like micelles in some cases. Moreover, triple thermoresponsive triblock copolymers from poly(N-n-propylacrylamide) …
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Functional Renormalization Group Methods in Quantum Chromodynamics
… lattice results for low-energy observables. Phase transitions in QCD at finite temperature and density are currently very actively researched. We study the chiral phase transition at finite temperature with two approaches. First, we compute the phase transition temperature in infinite and in …
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Synthesis and characterization of thermo-responsive polyethers
… onto hyaluronic acid to obtain gelation at temperatures above the phase transition temperature of poly (GME-EH). PGME is a water-soluble polymer at low temperatures, but phase separates at 57.3oC. The transition temperature of PGME is too high to be utilized in medical applications. Thus a …
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Co-polymer microgels: contemporary physico-chemical, structural and analytical investigations
… polymer which undergoes a conformational transition at approximately 32°C in aqueous solution. NIPAM is a monomer commonly employed in microgel synthesis and the resultant particles are thermosensitive, a property which can be altered by modification of the system by co-polymerisation. A …
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Nanostruktūrizuotų manganitų sluoksnių, legiruotų kobaltu, auginimas ir tyrimas /
… deposition method (PI-MOCVD) at a deposition temperature of 750 oC. The structural, electrical, and magnetic properties were measured for thin LSMCO films exhibiting manganese nonstoichiometry and difference in cobalt content ranging from 0 to 0.17. LSMCO films grown on LaAlO3 substrates were …
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Biologically inspired transparent material as an energy system
… dynamicIR absorber , will be modulated by temperature-dependance of the absorber by activetailored flows in a microfluidic based platform, than conventional IR static absorbers.Nature’s characterization of materials is a thermally dynamic response in real time toa microenvironment. This …
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Design and Manufacture of an Ultrasonic Transducer for Long-term High Temperature Operation
… of ultrasonic transducers suitable for high temperatures is introduced. The transducers are targeted for trouble-free continuous operation at 700-800 째C for at least two years, with sufficiently wide bandwidth to yield good temporal resolution. The design and manufacturing procedures were …
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Intrinsically Disordered Protein Polymer Libraries as Tools to Understand Protein Hydrophobicity
… acids, have observable lower critical solution temperature (LCST) phase transition behavior at physiologically relevant temperature and concentration ranges. This behavior is a striking feature of disordered proteins in nature, where chemical or physical stimuli lead to sharp conformational or …
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STM Study of Interfaces and Defects in 2D Materials
… investigation of interfaces and defects 2D transition metal dichalcogenides (TMDCs). The first part of the thesis focuses on the synthesis of 2D TiSe2 with chemical vapor transport (CVT). By properly choosing the growth condition, Sub-10 nm TiSe2 flakes were successfully obtained. A 2 × 2 …
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Polyethylene glycol stationary phases for capillary gas chromatography
… properties of various silicone stationary phases for capillary gas chromatography have been extensively studied, yet the properties of nonsilicone phases have not been so well investigated. The most popular nonsilicone phases are the high molecular weight polyethylene glycols (HMW PEG) …
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Adsorption of phloretin to lipid layers
… dependent on the surface pressure and the phase state of the lipid. Calorimetric measurements confirmed the integration of phloretin into membranes because of the strong decrease of the phase transition temperature, but they also showed that the cooperativity of phase transition is hardly …
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Polymer hydrogel nanoparticles and their networks
… dispersion above the lower critical solution temperature (LCST) of the HPC. The size distributions of microgel particles, measured by dynamic light scattering, have been correlated with synthesis conditions including surfactant concentration, polymer concentration, and reaction temperature. …
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