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 757 for “"Low temperatures."”.
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Vapor-liquid phase equilibria at low temperatures
Abstract not available.
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Creep of Copper at Intermediate and Low Temperatures
… is partially tested in the intermediate and low temperature regions using experimental data for vacuum melted copper, and values for the activation energy term of this equation are determined. The method of determination and some of the difficulties involved in this determination are set …
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Adiabatic thermal changes in dielectrics at low temperatures
… thermal changes in barium titanate ceramic at low temperatures. Concurrent with this is the problem of devising experimental techniques suitable for the investigation of this phenomenon in other dielectrics at liquid helium temperatures, a temperature region in which no previous measurements of …
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Transient Photoconductivity in Silver-Chloride at Low Temperatures
Made available in DSpace on 2015-05-12T17:12:12Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 5805511.PDF: 4297192 bytes, checksum: 84301ac3bfe3c50fad797480b1d4dc14 (MD5) Previous issue date: 1958
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Magnetic Properties of Helium-3 at Low Temperatures
Made available in DSpace on 2015-05-12T17:12:30Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6206214.PDF: 3737619 bytes, checksum: fcf0cf74a19740c4c5c103d2ca6fe40d (MD5) Previous issue date: 1962
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Characteristics of electric strain gages at low temperatures
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1946
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Study of the alcohol thermometer at low temperatures
Thesis: B.S., Massachusetts Institute of Technology, Department of Physics, 1882
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Universal sound attenuation in amorphous solids at low-temperatures
… known to exhibit quantitative universalities at low temperatures, the most striking of which is the ultrasonic attenuation coefficient 1/Q(ω). The established theory of tunneling two state systems (TTLS) in its original form (i.e. without extra fitting functions and parameters) is unable to …
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Activity of α- and β-amylase at low temperatures
… The stability of the enzymes as affected by low temperatures was determined in the sweet potato puree. In the systems with purified enzymes, cumulative α- and β-amylase activity at all storage temperatures studied increased as the storage time and enzyme concentration were increased, Both …
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Study of tunneling impurities in alkali halides at low temperatures
… thermal expansion (a) measurements obtained at temperatures T between 0.09 K and 10 K. For the Li+ defects, a peak occurs in the thermal expansion near 1 K which is qualitatively similar to the Schottky anomaly observed in the specific heat. For T > 0.6 K, the GrUneisen parameter, r, 3a/C, is …
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Deformation at Low Temperatures in Single Crystal Ni-base Superalloys
… shanks of turbine blades in service, where the low-temperature properties of single crystal Ni-base superalloys have implications for fatigue and thermomechanical fatigue lifetimes. Changes in composition across superalloy generations have prioritised high-temperature properties. This led to a …
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The specific heat of calcium chloride brines at low temperatures
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1897.
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Carbon and nitrogen mineralization in temperate forest soils at low temperatures
… forest soils was often considered negligible at low temperatures during the dormant season, which is questioned by recent findings. Climate models predict warmer winters but little is known about the temperature sensitivity of C and N mineralization at low temperatures. Temperature rises in the …
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Optical Absorption of Pure and Mixed Silver Halides at Low Temperatures
Made available in DSpace on 2015-05-12T21:41:35Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6607758.PDF: 3807464 bytes, checksum: 51610f9199f99a42f07d03634dd58dd9 (MD5) Previous issue date: 1966
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Optical absorption of pure and mixed silver halides a low temperatures
The low level indirect optical absorption of pure AgCl and AgBr has been measured between 4.20 K and0 77 K . The corresponding indirect optical absorption of AgCl~AgBr mixed crystals has also been measured in the same temperature range. The temperature dependence of the absorption spectra of pure …
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Near infrared transient absorption spectra of photolyzed myoglobin at low temperatures
… degrees of freedom in the protein at these temperatures. We present a model in which each protein has several ""blocking residues"" which relax following photolysis by surmounting enthalpy barriers which range from ten to fifty kJ/mol. These motions do not affect the rate of ligand …
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Impurity effects on the thermal conductivity of magnesium at low temperatures
Thesis (Ph.D.) Massachusetts Institute of Technology. Dept. of Physics, 1953.
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