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 68 for “"thermodynamic data"”.
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Thermodynamic data from diffusion couples
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1989.
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The generation and application of metallurgical thermodynamic data
The power of thermodynamics in the calculation of complex chemical and metallurgical equilibria of importance to industry has, over the last 15 years, been considerably enhanced by the availability of computers. It has resulted in the storage of data in databanks, the use of physical but complex …
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Thermodynamic data from multi-component metallic diffusion couples
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
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I. Thermodynamic Data for Adducts of Phenol With Lewis Bases. Ii. Coordination Compounds of Nickel(ii) and Chromium(iii) With Lewis Bases
Made available in DSpace on 2014-12-05T19:38:08Z (GMT). No. of bitstreams: 1 6303273.pdf: 4365894 bytes, checksum: 0ad93364ffdf82b9937d21859cf08df6 (MD5) Previous issue date: 1962
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The Dissociation Constant of Acetic Acid at 25°c
… constants of weak acids can be determined from thermodynamic data obtained from cells without liquid junction. The method was developed by Harned and his students.
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Quantitatively connecting the thermodynamic and electronic properties of molten systems
The electronic and thermodynamic properties of noncrystalline systems are investigated and quantitatively connected through the application of theory presented herein. The electronic entropy is confirmed to control the thermodynamics of molten semiconductors. The presented theory is applied to …
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Calculation of chemical and phase equilibria
… is the inaccuracy or total absence of pertinent thermodynamic data. The second is the complexity of the required calculation. It is the latter consideration which is the sole concern of this dissertation.
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Experimental Constraints on Silicate Perovskite Forming Reactions and Elastic Properties: Geophysical Implications for Chemical Heterogeneity in the Deep Mantle
… solution have been made to provide essential thermodynamic data for modeling the formation reactions of both magnesium and calcium silicate perovskite.
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Thermodynamic modelling as applied to the development of TRIP-Matrix-Composite materials: The Fe–Mg–Mn–Ti–Zr–O system
… 799 describes a development of the metal-ceramic thermodynamic databases as applied to the design of the TRIP-Matrix-Composite materials. A wide range of theoretical and experimental investigations have been carried out in the relevant systems of Fe–Mg–Zr–O, Mg–Ti–Zr–O and Mg–Mn–Zr–O. …
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Imaging and interpreting seismic heterogeneity in the North American lithosphere
… I jointly interpret inverse modeling of seismic data and forward modeling of chemical and thermodynamic data in order to investigate the origins of seismic heterogeneity within the cratonic lithosphere. I present a joint inversion of body and surface wave travel-times to determine independent but …
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Development of an Electrochemical Method to Investigate the Thermodynamic Behavior of Lanthanum and Sulfur in Liquid Steel
… of RE sulfide. The challenge is that thermodynamic data of RE sulfide of gas phase are insufficient. Therefore, I investigated the thermodynamic properties of gaseous rare earth compounds to evaluate the feasibility of vacuum distillation of RE sulfide, here during the steelmaking …
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Correlation between physical and genetic maps of plasmids
… calorimetric experiments an improved table of thermodynamic data including the stacking energy for ten different combinations of basepairs is presented. The prediction of a melting curve based on primary structure information can be based on the enthalpy individual combination of …
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The adsorption of Ni, Cu, Zn, Cd and Pb by δ-MnO₂ and its inclusion in an equilibrium model of metal partitioning in soils
… model of metal partitioning in soil systems, thermodynamic data for all processes influencing metal fate in soil systems are needed. In this work, the adsorption of the metals nickel, copper, zinc, cadmium and lead by δ-MnO₂ is investigated. This was done in order to provide thermodynamic data …
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The plastic deformation of alloys based on aluminum titanide
… in a Ti matrix has been calculated using known thermodynamic data which allows the concentration terms in the Lifshitz, Slyozov and Wagner coarsening equation to be calculated. Predictions show that a dispersion will exhibit a greater thermal stability when in a matrix with an excess …
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Maximum entropy quadratic model to characterize chemical non-equilibrium in re-entry flows
… reactions, which are important processes in aerothermodynamics, are studied. The kinetic and thermodynamic data is obtained from ab-initio calculations performed at NASA Ames Research Center. Previous analysis of the population distribution revealed that the population of the low lying energy …
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A kinetic and mechanistic study on the oxidation of chromium oxide in pure chemicals and in ferrometallurgical slags
… other constituents such as calcium oxide (CaO). Thermodynamic data from the literature, has shown that Cr[2]O[3] can undergo oxidation at ambient temperature when in contact with CaO and atmospheric oxygen (Kilau and Shah, 1984; Hattori et al., 1978). Furthermore, the oxidation of Cr[2]O[3] in …
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Sulfidation of Ternary Oxides: A Thermodynamic and Experimental Study Toward Selective Metal Extraction
… feedstocks. This thesis presents a chemical thermodynamic framework for the sulfidation of divalent alkaline earth and transition metal ternary oxides of titanates, molybdates, tungstates, niobates, and tantalates. Modified predominance diagrams were constructed to determine the possible …
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Reactivity, Characterization, Equilibrium Thermodynamics and Hetero-bimetallic Studies of Tridentate and Tetradentate Complexes Relevant to Syngas Catalysis
… ketone (Rh-C(O)-Rh) and an example of a thermodynamically favorable metal formyl complex ((tmtaa)Rh-C(O)H). An important feature of this work is the measurement of thermodynamic data to provide experimental benchmarks for obtaining key species in CO reduction and hydrogenation. A thorough …
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X-ray Debye temperatures of solid neon
… large grains of two solid neon specimens. These data have been interpreted in terms of two Debye characteristic temperatures, ~I by the ,method suggested by Nicklow and Young, and eM by the method due to Chipman. The specimens were prepared and maintained in a specially designed rigidtail liquid …
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Low cost solar powered water pump
… past, with variable successes, based on numerous thermodynamic cycles. Our system operates on the combination of two constant volume and two constant pressure processes, on a working fluid which expands due to input heat from the sun, and contracts due to heat rejection to the pumped water. This …
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