- About
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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.
Search results
Showing 321 to 322 of 322 (0.138 seconds)| 321 |
Terras raras: fracionamento, purificação e controle analíticoQUEIROZ, CARLOS A. da S. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:54:09Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:09:15Z (GMT). No. of bitstreams: 1
12442.pdf: 17943869 bytes, checksum: d8ae26da3e514d980c366a9cafa81e22 (MD5) / Dissertacao (Mestrado) / IEA/D / Instituto de Quimica, Universidade de Sao Paulo - IQ/USP
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Analýza neutronového pole laboratorního AmBe zdroje s využitím měřícího stendu / The AmBe Laboratory Neutron Source Field Determination Using Experimental StendJelínek, Martin January 2017 (has links)
This master’s thesis provides a comprehensive overview of the conventional neutron sources from the perspective of reactions which lead to the production of neutrons, advantages, disadvantages, properties and their possible utilization. In the relation to the assembly of the laboratory neutron source and the unique experimental stand “Candle” basic methods of the neutron field analysis are outlined and two of them, the neutron activation analysis and the calculation using the MCNP software code are discussed in depth to apply and compare these methods. The experimental part deals with the realization of neutron activation analysis from its design itself, through gamma spectrometry to the cadmium ratio calculation. In compliance with the measurements, a calculation with MCNP code was run and both methods were evaluated and compared. The computation is complemented with the analysis of radiation situation on the borders of the supervised area, which is compared to the legal limit.
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