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 20 of 24 for “"Formation temperature"”.
-
Controlling CoSi2 formation temperature by reactive deposition
… used to grow silicide films over a variety of temperatures ranging between 375 - 550 ce. It was found that a disilicide film is formed directly for substrate temperature maintained at T
-
Statistical hadronization phenomenology in heavy ion collisions at SPS and RHIC energies
… equilibrated staged freeze-out in which post-formation hadron interactions play an important role in determining final-state observables, and non-equilibrium sudden freeze-out where spectra and abundances get determined at the same time and further interactions are negligible. We attempt to …
-
Exploring wellbore and reservoir temperature profiles in fluid circulation and production operations
… different well operations resulting from any temperature differences between the wellbore fluid and the adjacent formation. Understanding the direction and mechanism of heat flow whether it is conduction or convection help to represent this heat exchange mathematically. However, the only …
-
REACTION AND MIGRATION OP SODIUM IN THE SYSTEM SODIUM OXYGEN ~ ALUMINA
… and sintered polycrystalline alumina in the temperature range 973K-1758K. No observable diffusion or reaction was observed for sodium metal in the absence of oxygen over the entire temperature range. When oxygen was Included in the above forms, a large corrosion reaction to form Na20A1203 …
-
Control of morphology Al-Fe-Si phase in Al-Si-Cu hypoeutectic alloy
… thermodynamics calculation of AlFeSi phase formation and fraction change during solidification process were conducted using Thermo-Calc software. A series of experiments, including adjusting cooling rates, addition of alloying elements, and heat treatment were conducted and effective methods …
-
Controllable vapor microbubbles for use in bioparticle actuation
… by several issues inherent to vapor bubble formation that severely limited the reliability of bubble-based devices. It has been shown in this thesis that it is possible to control the location at which bubbles form and the size of the bubbles, as well as to achieve repeatable and reduced …
-
Heat treatment optimization in the manufacture of Wilson Rockwell steel hardness test blocks
… of Experiments methodology. The uniformity of temperature distribution within the heating chamber and the effect of temperature and material composition on the final microstructure of the steel are analyzed. The hardness measurements and preparation of metallographic specimens follow the …
-
Stress and microstructure development in particle-based coatings
… development was also investigated. The film formation behavior was studied using a variety of techniques including AFM, cryoSEM, and minimum film formation temperature (MFFT) measurements.
-
An Investigation of Carbon Nanotube Synthesis: Modelling and Experiments
… H, O, Fe and S elements, at stoichiometries and temperatures consistent with CNT synthesis using the FCCVD method was developed. The effects of variable amounts of the different elements, as well as inert species (Ar and N$_2$) on the species and phase distributions were investigated as a …
-
Structural controls and diagenetic conditions associated with fluid migration on the Moab Fault, UT
… fluids associated with cementation and vein formation along the fault zone. In particular, clumped isotope thermometry is used to directly estimate the formation temperature of carbonate minerals. Two generations of cement are identified, featuring distinct isotopic compositions, formation …
-
The role of well testing in geothermal resource assessment
… Analyses of data from step-rate injection tests, temperature and pressure profiles as well as discharge tests conducted in the Reykjanes geothermal field are presented. Six wells, RN-12, RN-13b, RN-17b, RN-18, RN-23 and RN-29 were selected for the study. The computer numerical software, Well …
-
A Unified Model for Multi-Phase Flow and Heat Transfer in Wellbores
… taken to model heat transfer and predict the temperature profiles in wellbores unde, various circumstances.</p><p>Our model is capable of predicting the pressure profiles for various channel orientation and geometries. It can handle flow in vertical, and inclined system. Countercurrent flow …
-
Catalytic Hydrogenation and Hydrodesulfurization of Model Compounds
… and selectivity towards TH2MT at moderate temperatures. Temperature-programmed desorption (TPD) of hydrogen indicated that the H2 desorption amount was inversely related to the rate of TH2MT formation. Temperature programmed reaction (TPR) experiments revealed that pentanethiol became the …
-
Geometrically-Accurate and Homogenized Fuel Region Models to Predict Cladding Temperatures within a Truck Cask under Normal and Fire Accident Conditions
The temperature of spent nuclear fuel cladding within transport casks must be determined for both normal conditions of transport and hypothetical fire accident conditions to assure that it does not exceed certain limit conditions. In the current work a two-dimensional finite-element thermal model …
-
Stress, fracture, and microstructure development of drying aqueous particulate coatings
… to coalesce and form a continuous film at room temperature. In this work, two characterization methods were developed to support the research and development of aqueous particulate coating formulations. The first method measures the stress development of uniformly drying suspensions that are …
-
On Physics of Durable Ice Phobic Surfaces
… systems, but creation of these surfaces for low-temperature applications remains elusive. Non-wetting, liquid-infused and hydrated surfaces have inspired routes for development of icephobic surfaces. However, high freezing temperature, high ice adhesion strength and subsequent ice accretion, low …
-
Geomechanical property changes with hydrous pyrolysis in Mahogany oil shale in Green River Formation
The formation characteristics of organic-rich shales have proven to be affected by mineralogical composition, total organic content, water concentration, and bedding-plane orientation along with other parameters. However, it is not known with good accuracy what types of influence thermal maturation …
-
Isolating advective signatures in temperature logs
… characteristic thermal signature observed in temperature records. Heat transfer in the Earth’s crust occurs primarily by thermal diffusion. On the other hand, heat advection due to groundwater flow in general is a more efficient transport mechanism. Therefore, the subsurface temperature field …
-
Development and Implementation of Dispersion Phase Diagrams (DPDs) for Four Different Hydrophobically Modified Ethoxylated Urethane (HEUR) Based Acrylic Paint Systems
… that when dried above the polymer’s film formation temperature coalesces into a dry polymer film (Dragnevski, Routh, Murray, & Donald, 2010). The other main components of paint include associative thickeners, surfactants, pigments and fillers with the thickener being the primary area of …
-
Process-Induced Degradation during the Integration of Pb(Zr/x Ti/1-x)O3 Ferroelectric Capacitors
… phase by the thermal annealing, even at PZT formation temperature. For the elimination of this damaged layer, a novel wet cleaning solution was designed. Scanning electron microscopy (SEM) pictures clearly show that treatment with the cleaning solution completely removed the etching damaged …
Page 1 of 2