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 18 of 18 for “"Enthalpy change"”.
-
Thermodynamic modeling and microcalorimetry of nanostructured materials for capacitive thermal management of electronics
… Capacitive thermal management based on phase change materials potentially offers a fan-less thermal management for such transient profiles. However, such capacitive management becomes feasible only if there is a significant enhancement in the enthalpy change per unit volume of the phase change …
-
Structure and Function of Colicin E5 Ribonuclease Domain
… calorimetry studies showed a -10 kcal/mol enthalpy change upon the formation of ColE5•ImmE5 complex. The mutational studies of ImmE5 indicated that ImmE5 K4 and D95 contributes a larger inhibitory effect toward ColE5. The structure comparison of ColE5 in homodimer and complex showed …
-
An isoperibol calorimeter for the investigation of biochemical kinetics and isothermal titration calorimetry
… calorimetry is a technique used to measure the enthalpy change associated with a molecular binding interaction. From these data, the binding constant for the reaction can be determined. In the scope of a larger project to design a high sensitivity instrument for collecting such data, the current …
-
MEMS-based temperature-dependent characterization of biomolecular interactions
… including the specific heat capacity, molar enthalpy change, and melting temperature. In addition, we also present the development of a variant of standard DSC, temperature-modulated DSC (AC-DSC), on a MEMS device for thermodynamic characterization of biomolecules. Preliminary results again …
-
INVESTIGATION OF STRATEGIES FOR IMPROVING THE PERFORMANCE OF SMART THERMOSTAT-DRIVEN FDD METHODS
… metrics, impact analysis on AC duty factor and enthalpy change were carried out. Results of the analyses showed that severe UBLDs can cause almost 9% increase in energy consumption. The results also showed that these UBLDs can cause false alarm rates in FDD up to 70% if appropriate thresholds …
-
Local Motions in Proteins as Investigated by the Thermal Coefficient of the Frictional Resistance to Rotation (Protein Dynamics, Fluorescence, Viscosity)
… Through a simple thermodynamic model, the enthalpy change for these coupling in motions can be calculated. In certain proteins containing two sets of fluorophores in very heterogeneous environments, the individual parameters for each can be discerned.
-
Calorimetric studies of small-molecule adsorption to carbon nanotubes
… SWCNTs in DMF is accompanied by a large negative enthalpy change, while the structurally-related it-acidic macrocycle, [Hg(C 6F4)]3, does not have a large enthalpy of adsorption. This result agrees with previous studies indicating that CNT binding energy depends upon the polarizability of the …
-
Experimental and Prediction Approaches to Determine Dissociation Constants (pKa) of Amines
… quantities including the standard state enthalpy change (ΔH0) and the standard state entropy change (Δ𝑆0) for the dissociation process were determined via Van’t Hoff equation. The pKa values reflected the basicity of amines and results showed that all studied amines had a stronger …
-
Process-structure-property relationships of resorbable desamino tyrosine derived polymers : effect of backbone chemistry and assembly on drug delivery
… polyarylates under in vitro conditions. The change of structure caused by incubation in phosphate buffer solution and the effect on the release of p-nitroaniline (PNA) (model drug) has been investigated, primarily with differential scanning calorimetry (DSC). In addition the release profile …
-
Thermochemical hydrogen-deuterium isotope effects
… near infinite dilution of one component, the enthalpy change for the complete hydrogen-deuterium transfer between methanol (one mole) and heavy water (one-half mole) has been calculated. Values of -95 and -97 cal/mole were obtained for this transfer by two independent schemes. The studies …
-
Melt extrusion and continuous manufacturing of pharmaceutical materials
… of amorphous Molecule A was characterized using enthalpy of relaxation measurements. Molecular level rearrangements are the source of physical instability for the fragile glass forming Molecule A. The instability can be modified by introducing a second component, which contributes to the overall …
-
Water in Protein Cavities: Free Energy, Entropy, Enthalpy, and its Influences on Protein Structure and Flexibility
… which more than compensates for amore favorable enthalpy, and additional water molecules at the proteinligandinterface.Free energy, enthalpy, and entropy for these water molecules were calculated by thermodynamicintegration computer simulations. The calculations show that addition of thewater …
-
Laser-assisted single-molecule refolding
… as melting temperature, cooperativity, and the enthalpy change. Mutational studies have allowed dissection of the contribution of base pairs to kissing complex stability. And the ratio of the competing reaction pathways was determined. </p> <p>LASR experiments designed to the study of the origin …
-
Thermodynamics and kinetics of hydrogen storage in magnesium hydride: a theoretical study of catalyst-dopant, defect, and size effects
… Thus, we need to determine accurately both the enthalpy and kinetic barriers controlling desorption, but for realistic, defected cases. Employing density functional theory (DFT) and simulated annealing, we studied initial H2 desorption from nanoclusters and semi-infinite stepped surfaces with …
-
Molecular Level Interaction of Human Fibroblast Growth Factor-1 (hFGF-1) With Phloridzin
… will be performed to determine kinetics of the enthalpy change and dissociation constant of phloridzin-hFGF-1 interaction. In vivo studies will also be performed after completion of in vitro studies, which will give an insight about possibility of phloridzin and hFGF-1 interaction under …
-
Bonding Characteristics and Devitrification Behavior in Iron-Containing Sodium-Silicate Glasses
… From a simple thermodynamic consideration, the enthalpy change of (gamma)-Na(,2)Si(,2)O(,5) in the iron silicate glasses was estimated to be -34 kcal/mole, which is smaller than that in pure sodium-disilicate crystals. From the kinetic point of view, the devitrification process seems to take …
-
Microemulsion and macroemulsion behaviour of systems containing oil, water and nonionic surfactant
… the critical microemulsion concentration, cμc. Changes in the monolayer curvature induced through changing the temperature, salt concentration and the nature of the oil phase, are discussed in terms of an effective surfactant molecular geometry. The effect of solubilisation of protein into the …
-
Characterization of starch accumulation in storage root of Marama (Tylosema Esculentum)
… consumption and industrial use. With climatic changes it is important to find crops that can be used as food and will still be able to survive the arid conditions. Marama is a plant that grows in the arid Namibian conditions, that bears a storage root that it is underutilized and has a …