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 9450 for “"Temperatures"”.
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Moiré interferometry at high temperatures
… of performing deformation measurements at high temperatures in a vacuum oven using an achromatic interferometer. The moiré system setup was designed with particular consideration for the stability, compactness, flexibility, and ease of control. A vacuum testing environment was provided to …
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Elasticity Measurement at High Temperatures
… of elastic constant measurement at high temperatures, complementary to the resonant thin disc method is given. This consists of a double pulse, time of flight method which does not require a high material Q and easily lends itself to automation. A design for an instrument is presented …
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Critical temperatures of superconducting solders
Different magnetic strengths in MRIs produce different reactions and provide more insight into what being imaged. Being able to more quickly switch between two or more different magnet strengths would allow scientists in research to be able to gather more useful data. Replacing the …
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Mathematical modeling of river water temperatures
<p>"The applicability of power spectral density techniques, Fourier series analysis, and linear regression to the mathematical modeling of river water temperature is demonstrated. Consideration is also given to the problem of estimating thermal inputs to rivers from man-made sources such as …
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Elevated temperatures in waste containment facilities
… A number of factors can lead to elevated temperatures and thus present a hazard to the public health and safety. For instance, MSW landfills can produce obnoxious odors, toxic gases, and aggressive leachates. In addition, they can damage gas extraction, leachate collection, interim cover, …
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Photovoltaic cell efficiency at elevated temperatures
… we tested the change in efficiency due to higher temperatures of three types of solar cells: a polymer cell, an amorphous silicon cell and a CIS cell. Using an AM1.5 G solar simulator at 973 W/m2 we took the I-V curve of each of the three cells at increasing temperatures. We used the I-V curve to …
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Continuous NAPL loss rates using subsurface temperatures
To view the abstract, please see the full text of the document.
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Electron-Ion Recombination at Temperatures below 300K
… Recombination study of ions with electrons at temperatures below 300 K Author: Tomáš Kotrík Department: Department of Surface and Plasma Science Supervisor of the doctoral thesis: Prof. RNDr. Juraj Glosík, DrSc. Department of Surface and Plasma Science Abstract: Presented is the study of …
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Dynamic characteristics of metals under elevated temperatures
… may be subject to dynamic loads under elevated temperatures. This thesis attempts to experimentally identify properties of the three above mentioned metals at elevated temperature [70°F--350°F] and under different strain rates [10-4--10 2 sec-1]; The thesis will investigate the effect of …
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Sensors for thermal conductivity at high temperatures
… of molten indium, tin and lead at various temperatures up to 750 K. The results have been compared to previously published data and the discrepancies have been discussed and explained. Each metal has been measured using at least two sensors and the consistency of the measured data has also …
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Torsional creep of tin at high temperatures
… data are presented for tin tested in torsion at temperatures from 1000C to 228°C. Results obtained below 210°C verify observations of other investigators. A creep activation energy of 22.5 Kcal/mol in this temperature range is determined. Above 210°C, an abnormal increase in the steady-state …
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Vapor-liquid phase equilibria at low temperatures
Abstract not available.
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A Study of Air Temperatures within Croupettes
… within the Croupette. The hypothesis, that air temperatures within Croupettes may not be constant and may vary due to specific identifiable factors may be accepted. Because statistically significant variations in air temperature within Croupettes were found, it does not necessarily follow that …
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Photoconductivity in Germanium at Liquid Helium Temperatures
Made available in DSpace on 2015-05-12T17:11:52Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0010523.PDF: 3093080 bytes, checksum: 37a9a8ff9358076b6676ca90c10f706e (MD5) Previous issue date: 1954
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X-ray Debye temperatures of solid neon
… 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 helium cryostat, and the measurements were made with a unique …
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