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 131 for “"Microanalysis"”.
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Long wavelength X-ray microanalysis
… scanning microanalyser. For long wavelength microanalysis purposes, the classica1 methods of x-ray spectrometr.v are impracticable. The proportional counter, the best of several possibilities, has there~ore been employed as a dispersive detector, the output pulses subsequently being …
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Behavioural microanalysis of dopamine autoreceptor function
Low doses of dopamine autoreceptor (DA) agonists are presumed to act by stimulating DA autoreceptors on the sona/dendrites and axon terminals of DA neurons. Low doses of apomorphine reduced food Intake, in a microstructural analysis paradigm, by reducing both the time spent feeding and the rate of …
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Hard x-ray microanalysis with parabolic refractive lenses
… energies. This thesis follows the development of microanalysis in the hard X-ray range based on parabolic refractive lenses. Obviously, refractive lenses for visible light are most successful. But the weak refraction and strong absorption of hard X-rays in matter make the realization of refractive …
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Effects of diffraction on microanalysis of embedded precipitates
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1991.
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Development of microanalysis tools for characterization of the humoral response to infections diseases
Antibodies are higher order protein structures produced by a subset of lymphocytes (B cells) in the immune system for protection against pathogenic species. These homodimers of heterodimers form highly specific interactions with their cognate antigens and hence have become very important for the …
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X-Ray Mass Absorption Coefficients and Quantitative Microanalysis of Metallurgical Systems, Including Refractory Metal-Interstitial Compounds
Made available in DSpace on 2015-05-12T21:41:02Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6915311.PDF: 5848870 bytes, checksum: 73fd9ba07647a2d4ba87b7fd356e0474 (MD5) Previous issue date: 1969
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A microanalysis of EMG and EEG changes during the sleep onset period (SOP) : a theoretical investigation with practical applications /
The present study has both theoretical and practical aspects. The theoretical intent of the study was to closely examine the relationship between muscle activity (EMG) and EEG state during the process of falling asleep. Sleep stages during sleep onset (SO) have been generally defined with regards …
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Modes of engagement in hands-on science learning: A microanalysis of elementary students' relationship to the object of study
Constructivism generally focuses on children's development of ideas, the nature of their conceptions, and their methods of reasoning. When closely examined the current theory of constructivism does not explicitly say anything regarding the modes of engagement through which children experience the …
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Microanalysis of impactors of the earth and impact products from the moon : the origin and evolution of micrometeorites, and tracking bombardment history through chemical and radioisotopic memories of lunar impact spherules
This thesis consists of two topics, the study of terrestrially-collected micrometeorites and lunar impact spherules. The purpose of the first project was primarily method development, although a study of micrometeorite petrography, chemistry, atmospheric alteration, and potential origin ensued. A …
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Microanalysis of impactors of the earth and impact products from the moon : the origin and evolution of micrometeorites, and tracking bombardment history through chemical and radioisotopic memories of lunar impact spherules
This thesis consists of two topics, the study of terrestrially-collected micrometeorites and lunar impact spherules. The purpose of the first project was primarily method development, although a study of micrometeorite petrography, chemistry, atmospheric alteration, and potential origin ensued. A …
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Use of uranium decay series for dating an archaeological smelting site
… identify the phases in the slags. Electron beam microanalysis was used to identify the chemical composition of the identified phases. Ion beam microanalysis was used to assess the isotopic fractionation between the phases. Electron pulse disaggregation, hand-sorting, and magnetic separations were …
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Mathematical Poise and Movement in Thinking: The Zero Goes on Vacation
… and other number tasks. It includes a report of microanalysis of one interview, called the Odometer video-tape. Generally, the report attempts a fairly well-rounded portrait of Kay, as a child who customarily thinks about numbers with exceptional poise or equanimity.
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Optimizing graphene oxide reduction via laser irradiation
… and carbon to oxygen ratios given by X-ray microanalysis.
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Planar Coils for NMR Microspectroscopy
… be more easily fabricated and integrated into microanalysis systems through the use of microfabrication techniques. This thesis investigates the feasibility of using planar coils in NMR microspectroscopy. The sensitivity of planar coils is modeled and measured, and optimum coil sizes are …
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