Global ETD Search
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Showing 1 to 13 of 13 for “"melting curve"”.
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Wetting Phenomena Near the Melting Curve
A study of the location of the hard sphere crystal-fluid phase transition and equilibrium wetting states for systems in contact with various hard substrates was undertaken using Monte Carlo (MC) and molecular dynamics (MD) techniques. Through the use of MD the phase transition was found to occur at …
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Application of compressional cooling to the study of nuclear ordering in solid helium three
… of He 3 at temperatures below the minimum in the melting curve. The cell was precooled to about 20 mOK using a continuous dilution refrigerator. Compression was accomplished using liquid He as a pressurizing fluid. Along the melting curve, the pressure and temperature were measured using, …
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Fitting Interatomic Potentials to Reproduce Phase Transitions
… For the CuAu potential, I fit the eutectic melting curve using my own implementation of the Nelder-Mead algorithm. The Ti potential is modified to predict a triple point which is in qualitative agreement with experimental predictions. To calculate phase transitions, I use the nested sampling …
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X-ray diffraction study of compressed solid argon and krypton
… very precise x-ray lattice parameters along the melting curves of solid argon and solid krypton and to measure changes in vacancy concentrations along quasi-isochores for both these substances. The uncertainty of the lattice parameters obtained along melting was estimated to be 27 ppm. These …
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Optimization of force fields for molecular dynamics
… the potential parameters while the slope of the melting curve is not. The sensitivity variations make it difficult to satisfy both observations simultaneously. We conjecture that there is no set of parameters that reproduces experimental melting curves of short peptides that are modeled with the …
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Brillouin studies of diopside and H2O
… properties of H2O. We determined the melting curve of Ice VII by simultaneous measurements of sound velocity and angle-dispersive synchrotron x-ray diffraction in a membrane-type diamond anvil cell with resistance heating at elevated temperatures to 873 K at pressures of 2 GPa to 14 …
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Arthropod Predation in Brassica Agroecosystems: Effects of Latitude, Community Composition, and Diet Breadth
… metabarcoding results with species-specific melting curve analysis. This study documented common false positive and false negative taxonomic results and suggested that a species-specific verification step is necessary to ensure accurate depictions of arthropod trophic interactions. Lastly, I …
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Genomic analysis of the diapause program in the West Nile virus vector Culex pipiens.
… (genetalia). Here we offer high resolution melting curve analysis which allows the use of fixed, single nucleotide polymorphisms (SNPs) to cheaply and quickly validate the identities of mosquito specimens. Isolating and disruption of genes contributing to the life strategies of Culex pipiens …
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Laser-assisted single-molecule refolding
… between single-molecule and bulk DNA duplex melting experiments. </p> <p>HIV 1 DIS RNAs form a kissing complex in the loop region and proceed to the extended duplex structure with the help of enzymes or other cofactors in the later stage of viral replication. The kissing complex itself is …
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Correlation between physical and genetic maps of plasmids
… of basepairs is presented. The prediction of a melting curve based on primary structure information can be based on the enthalpy individual combination of basepairs[41.50.58]. The tables of the thermodynamic data published in the literature are given in Appendix D. In this thesis a slightly …
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Potential prebiotic roles of (amino-)acylation in the synthesis and function of RNA
… sites of 2'-O-acetylation were assessed by UV melting curve analysis. Remarkably, the acetyl groups caused a consistent decrease in Tm of between 3.0-3.2 °C. Thermodynamic parameters indicated a decrease in duplex stability that was consistent with a decrease in hydration of the minor groove …
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Some properties and function of ribosomal proteins from the seeds of Pinus lambertiana
… increase of the slope of the differentiated melting curve at the Tm. The DNS-ribosome was more sensitive to ribonuclease digestion than the normal ribosome, under all conditions tested. From the above observations, it was concluded that: The DNS-ribosome may be useful in the study of the …
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Synthesis and Characterization of a Novel Polyacetal & Design and Preparation of Superhydrophobic Photocatalytic Surfaces
… 4 carbons in length. DSC thermo-grams showed a melting curve of a polymer with melting point lower, as expected, than that of oxymethylene homopolymer. No homopolymer in the copolymer samples was in indicated by TGA. The new acetal copolymer, poly(6-methyl-1,3-dioxocane-co-trioxane), which has a …