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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 41 to 50 of 1940 (0.091 seconds)| 41 |
Proton chemical shifts and relaxation studies in solution using high resolution Fourier transform NMRLee, Hsing-Chung Joseph 08 1900 (has links)
No description available.
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| 42 |
EXPERIMENTS AND MODELING ON THE STRESS RELAXATION NEAR A NOTCH IN ZR-2.5NBWan, SHUAI 20 September 2012 (has links)
As an important structural component in CANDU reactor, the pressure tube, made of coldworked Zr-2.5Nb, experiences a neutron flux under high pressure and elevated temperature during the reactor operation. Notches, existing as defects in the pressure tube, are usually the location where stress concentration and crack initiation happens, which seriously degrade the performance of the pressure tube. However, the concentrated stress at the notch area is expected to be relieved by thermal creep, reducing the possibility of crack occurrence.
In this study, synchrotron X-ray diffraction experiments were conducted to collect the lattice strains near the notch in both irradiated and unirradiated Zr-2.5Nb samples which had experienced a thermal creep process for different time periods. Strain maps of the notch area were created for each sample. Stress relaxation over the time is discussed for both parallel and perpendicular to the loading direction and also compared between {10 -10} and {0002} orientations. A FE model was set up for the unirradiated materials, which was verified by the experimental results.
This work provides an understanding of the stress relaxation near a notch in Zr-2.5Nb and the stress/strain distribution during the thermal creep, which provides valuable information on the assessment of the reactor operation. / Thesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2012-09-20 19:39:30.593
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| 43 |
Spin-phonon transition probabilities for Cr3 in ruby.El-Azab, Mostafa Ibrahim. January 1970 (has links)
No description available.
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| 44 |
Relaxation labeling and maxima selectionLeclerc, Yvan G. January 1980 (has links)
No description available.
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| 45 |
Spin-lattice relaxation in the presence of Jahn-Teller instability.Lee, Ker-Ping January 1969 (has links)
No description available.
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| 46 |
A Moessbauer study of relaxation and phase transitions in some magnetic systemsChadwick, J. January 1988 (has links)
No description available.
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| 47 |
Mindfulness, metacognition and the treatment of generalised anxiety disorder - single case studiesMartinez-Cengotitabengoa, Maria-Teresa January 2001 (has links)
No description available.
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| 48 |
The comparative efficacy of counselling and complementary therapy in cancer careSeddon, Lesley January 2000 (has links)
No description available.
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| 49 |
A clinical evaluation of vecuronium bromideFerres, Christopher January 1983 (has links)
No description available.
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Effects of self-induced relaxation on autonomic responses and subjective distress of high- and low-neuroticism scorers to aversive baby criesHiguchi, Annette A January 1976 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1976. / Bibliography: leaves 115-122. / Microfiche. / x, 122 leaves ill
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