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 868 for “"Temperature Range"”.
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The Urban Heat Island's Effect on the diurnal temperature range
(cont.) representing Phoenix and its rural equivalent is presented through a comparison with estimated energy fluxes for Houston, TX.
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Silicon Germanium SRAM and ROM Designs for Wide Temperature Range Space Applications
… are also designed to operate over the wide temperature range of -180 °C to 125 °C. Design, simulation, and physical layout are evaluated throughout the process. Modeling of the memory arrays for static timing analysis (STA) is done to allow easy integration of the design into a typical RTL …
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Evolution of Preconsolidation Pressure of Normally Consolidated Clays Over Full Temperature Range
While it has been established that temperature can change the preconsolidation pressure of clays, the current understanding is limited to specific ranges of temperatures, with temperatures above freezing being studied entirely independently of temperatures below freezing. However, as temperature is …
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The water permeability of the human erythrocyte in the temperature range +25CÌ to -10CÌ
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Quenching behavior in a NB₃Al superconducting coil operating in the temperature range of 4.2 to 12K
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Development of a priest interferometer for measurement of the thermal expansion of graphite-epoxy in the temperature range 116-366K
The thermal expansion behavior of Graphite/Epoxy Laminates between 116 and 366 degrees Kelvin was investigated using a novel implementation of the Priest interferometer concept. This thesis describes the design, construction and use of the interferometer along with the experimental results it was …
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An X- and Q-band electron paramagnetic resonance study of Mn2+ in a single crystal of NH4Cl0.9I0.1 in the temperature range 77-295 K
… frequencies, and at various microwave cavity temperatures. The resonance spectrum of this crystal is described by a set of spin-Hamiltonian parameters, whose parameters are determined by fitting the various resonance line positions obtained for several angular orientations of the magnetic …
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The photolysis and co-irradiated decomposition of barium and strontium azides
… powders and pellets of barium azide in the temperature range 27,0° - 135,0°C and of strontium azide in the temperature range 30,0° - l35,0°C has been studied. Decompositions in the temperature range 27,0°- 100,0°C for barium azide and 30,0° - 90,0°C for strontium azide have been termed …
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A systematic study of radiation enhanced diffusion; theoretical improvement and application
… have shown sink limited kinetics in the low temperature range and recombination limited kinetics in the high temperature range, which are the opposite of the predictions from the traditional RED model. Thus, a modified model was created by others to explain the new results quite successfully …
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Device Characterization and Compact Modeling of the SiGe HBT in Extreme Temperature Environments
… very high frequency response but limited voltage range. Commercial communication applications in wireless and system integration have driven the development of the SiGe HBT. However, the device's excellent electrical performance goes beyond the commercial environment. The SiGe HBT performs …
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Temperature And Pressure Effects On Elastic Properties Of Relaxor Ferroelectrics And Thermoelectrics: A Resonant Ultrasound Spectroscopy Study
… of structural phase transitions with changes in temperature and the chemical composition. The work covered in this dissertation seek to gain insight into the phase diagram of PMN-PT using temperature and pressure dependence of the elastic properties. Single crystal PMN-PT with a composition near …
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The photolysis of calcium, barium, strontium and lithium azides and the co-irradiated decomposition of calcium azide
… barium, strontium and lithium azides in the temperature range -80,0° - 35,0°C has been studied. Powdered and pelleted calcium azide was also irradiated with ultraviolet radiation in the temperature range 35,0° - 90,0°C and powdered lithium azide in the temperature range 24,0° - 170,0°C. All …
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Parametric Study of Novel Passive Thermal Control Technology for Spacecraft
… passively change their emissivity based on their temperature, with VEMs having low emissivity at low temperatures and high emissivity at high temperatures. This property of VEMs allows for spacecraft to have reduced heater power and less extreme temperature swings without adding active thermal …
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Radiation enhanced diffusion of neodymium in single crystal thin film UO2
… Samples were irradiated with 1.8 MeV Kr+ over a temperature range from 400 to 800 C. RED in UO2 was found to be in the recombination limited regime. Dose rate dependence measurement showed radiation enhanced diffusivity was proportional to the square root of the irradiation flux, further …
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Diffusion of iron and cobalt in nickel single crystals
… of iron-59 in nickel have been determined in the temperature range 815°C to 1200°C. The temperature dependence can be represented by an Arrhenius type relationship,...The effect of the isotopic mass on the diffusion coefficient of cobalt in nickel has also been investigated. The isotope effect …
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Movement and Distribution of Esocids and Forage Fishes In A Power Plant Cooling Reservoir
… intake area of the reservoir during the summer (temperature range, 27.5 – 31.5˚ C) and the discharge area during the winter (temperature range, 4.5 – 31.5˚C). In the spring and fall, the fishes were located throughout the reservoir (temperature range, 12.0 – 28.5˚C). Highest rates of movement for …
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Kinetic Isotope Effect of the Oxidative Addition Reaction of Hydrogen to Vaska's Compound
… compound) have been accurately measured over the temperature range 0-50(DEGREES)C in toluene. The kinetic isotope effect, i.e., the ratio of the rate constants k(,H(,2))/k(,D(,2)), was determined over this temperature range. The kinetic isotope effect varies substantially with temperature, being …
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ΑΠΟΛΥΤΗ ΜΕΘΟΔΟΣ ΜΕΤΡΗΣΗΣ ΘΕΡΜΙΚΗΣ ΑΓΩΓΙΜΟΤΗΤΑΣ ΥΓΡΩΝ
… THIS INSTRUMENT IS DESIGNED TO OPERATE IN THE TEMPERATURE RANGE 20-90 C AT ATMOSPHERIC PRESSURE WITH AN ASSOCIATED ACCURACY OF +0.5% OF THEABSOLUTE THERMAL CONDUCTIVITY VALUES. THE CONSTRUCTION OF THIS INSTRUMENT, WHICH IS BASED UPON THE TRANSIENT HOT WIRE PRINCIPLE, WAS IMPLEMENTED IN TWO …
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A flow reactor study of gas phase hydrocarbon oxidation
… of propanal, n-butanal and iso-butanal over the temperature range 710-783K.
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Untersuchungen zu den Versagensmechanismen von Wärmedämmschicht-Systemen im Temperaturbereich von 900 C bis 1050 C bei zyklischer Temperaturbelastung
… mechanisms of TBC-coated systems during cyclic temperature exposure without additional mechanical load in the temperature range between 900°C and 1050°C. If failure appeared until an testing duration of 5000h in the temperature range between 900°C and 950°C, it was driven by the formation of a …
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