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  • About
  • 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.
1

Coaxial Germanium Lithium-Drifted Gamma Radiation Detectors / Germanium Lithium-Drifted Detectors

Wall, Basil 09 1900 (has links)
This thesis is missing page 36, all other versions of the thesis are missing this page as well. -Digitization Centre / This thesis deals with the theory, fabrication and application of semi-conductor detectors to gamma ray spectroscopy. The theory section discusses the semi-conductor lattice with respect to the incoming gamma ray and the subsequent hole-electron pairs formed in the diode depletion region. The fabrication section describes the materials and apparatus used in this work to produce the Ge(Li) detectors. A table is given showing the characteristics of these devices as they proceed through the process. The section on the characteristics of these detectors gives information as to how a good detector should operate under certain tests., The detectors made in this laboratory were used to investigate a well known "fission product" nuclide and a neutron capture reaction on a rare earth element. However, these investigations were not exhaustive but only show how the improved resolution of the Ge(Li) detectors has opened up new areas of gamma ray studies. / Thesis / Master of Science (MS)
2

Arranjo experimental para producao e utilizacao de raios gama de captura radioativa de neutrons

MAFRA, OLGA Y. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:25:15Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:03:08Z (GMT). No. of bitstreams: 1 01096.pdf: 937678 bytes, checksum: 5006b3033fd902ca4a701626b21dc45f (MD5) / Dissertacao (Mestrado) / IEA/D / Escola Politecnica, Universidade de Sao Paulo - POLI/USP
3

Arranjo experimental para producao e utilizacao de raios gama de captura radioativa de neutrons

MAFRA, OLGA Y. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:25:15Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:03:08Z (GMT). No. of bitstreams: 1 01096.pdf: 937678 bytes, checksum: 5006b3033fd902ca4a701626b21dc45f (MD5) / Dissertacao (Mestrado) / IEA/D / Escola Politecnica, Universidade de Sao Paulo - POLI/USP
4

Medida de fracao de vazio em escoamento bifasico, gas-agua, em tubos verticais usando absorcao gama

SILVA, RAIMUNDO D. da 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:32:06Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:55Z (GMT). No. of bitstreams: 1 02297.pdf: 1929315 bytes, checksum: 1f3c8c5cb4048eb63b32ec185d9f1b49 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
5

Fabricacao de luvas cirurgicas com latex de borracha natural vulcanizado com raios gama

COLLANTES, HUGO D.C. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:25:22Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:20Z (GMT). No. of bitstreams: 1 05826.pdf: 6440180 bytes, checksum: 1c771858083be07c021d9ab59a4f8c36 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
6

Medida de fracao de vazio em escoamento bifasico, gas-agua, em tubos verticais usando absorcao gama

SILVA, RAIMUNDO D. da 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:32:06Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:55Z (GMT). No. of bitstreams: 1 02297.pdf: 1929315 bytes, checksum: 1f3c8c5cb4048eb63b32ec185d9f1b49 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
7

Fabricacao de luvas cirurgicas com latex de borracha natural vulcanizado com raios gama

COLLANTES, HUGO D.C. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:25:22Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:20Z (GMT). No. of bitstreams: 1 05826.pdf: 6440180 bytes, checksum: 1c771858083be07c021d9ab59a4f8c36 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
8

Producao de politetrafluoroetileno mediante a polimerizacao induzida por radiacao gama

LUGAO, ADEMAR B. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:32:13Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:10:37Z (GMT). No. of bitstreams: 1 02645.pdf: 1691710 bytes, checksum: 39067301c2a53e7ec89ab2f222ef287b (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
9

Producao de politetrafluoroetileno mediante a polimerizacao induzida por radiacao gama

LUGAO, ADEMAR B. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:32:13Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:10:37Z (GMT). No. of bitstreams: 1 02645.pdf: 1691710 bytes, checksum: 39067301c2a53e7ec89ab2f222ef287b (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
10

A Study of the Effect of Gamma Radiation on Sporulation and Growth of Yeast

Kingsley, Van Victor 05 1900 (has links)
The present study was initiated with the purpose of determining and comparing the effect of gamma radiation on the capacity of yeast cells to grow and sporulate. Using a new technique by which irradiated and non-irradiated yeast cells could be scored directly, it was found that sporulating yeast cells were more sensitive to radiation than growing cells, and that the inactivation of the capacity of an irradiated yeast cell to sporulate did not affect its ability to grow. Observations on irradiated sporulating cells indicated that spore-formation and reduction division of the nucleus, are closely allied phenomena. A short discussion of a probable mechanism of action of gamma radiation on sporulating yeast is included, together with suggestions for future research. / Thesis / Master of Science (MS)

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