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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 31 to 40 of 10653 (0.023 seconds)| 31 |
Über einwirkung von Röntgenstrahlen auf flussspat ...Radeboldt, Walther. January 1903 (has links)
Inaug.-diss.--Rostock.
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On the atomic scattering factor for X-rays in the region of anomalous dispersionKnol, Kornelis Swier. January 1934 (has links)
Proefschrift--Groningen. / "Stellingen": [2] p. inserted. Includes bibliographical references.
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The X-ray its uses in the development and improvement of foundry casting techniques /Perpich, Stephen J. January 1942 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1942. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaf 43).
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The factors which determine the quantity of Roentgen radiation given off by an X-ray tubeDavey, Wheeler Pedlar, January 1900 (has links)
Thesis (Ph. D.)--Cornell University, 1914. / Typewritten. eContent provider-neutral record in process. Description based on print version record.
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Small-angle X-ray scattering from copper-nickel diffusion couplesSharp, Gerald White, January 1956 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1956. / Typescript. Abstracted in Dissertation abstracts, v. 17 (1957) no. 3, p. 653-654. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 93-95).
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Determination of the intensity of scattered radiation and the performance of grids in diagnostic radiology by Monte Carlo methodsKalender, Willi Alfred. January 1979 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 134-140).
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Polarization of Röntgen rays ...Ham, William Ross. January 1910 (has links)
Thesis (PH. D.)--University of Chicago. / "Reprinted from the Physical review, vol. xxx, no. 1, January, 1910." Includes bibliographical references.
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A determination of the efficiency of production of X-rays,Weeks, Paul Thorne. January 1917 (has links)
Thesis (Ph. D.)--Cornell University, 1917.
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The Absorption coefficients of soft X-rays ... /Miller, Carl Danforth, January 1900 (has links)
Thesis (Ph. D.)--University of Chicago, 1916. / "A Private edition distributed by the University of Chicago Libraries." "Reprinted from the Physical review, n.s., vol. VIII, no. 4, October, 1916." Includes bibliographical references. Also available on the Internet.
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Obtenção e caracterização de vitrocerâmicos de nefelina :Borba, Cristina Doneda Gomes de January 2000 (has links)
Tese (Doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. / Made available in DSpace on 2012-10-17T17:29:39Z (GMT). No. of bitstreams: 0Bitstream added on 2014-09-25T19:35:17Z : No. of bitstreams: 1
161654.pdf: 25517170 bytes, checksum: 6e37cc768288e79de8652148b7f4790c (MD5) / Foram produzidos vitrocerâmicos a partir de vidros do sistema Na2O-Al2O3-SiO2, adicionados com diversos agentes nucleantes: TiO2, ZrO2, SnO2 e ZnO. O estudo envolvendo os tratamentos térmicos dos vidros foi realizado segundo um delineamento fatorial 33, variando-se a temperatura de nucleação, a temperatura de cristalização e o tempo de cristalização. Todos os vitrocerâmicos desenvolveram a fase cristalina nefelina, com composição Na2O.Al2O3.2SiO2. As técnicas empregadas na caracterização dos vidros e vitrocerâmicos foram: fluorescência de raios-X, análise térmica diferencial, difração de raios-X, análise dilatométrica, espectrometria de infravermelho e microscopia eletrônica de varredura. Para comparar os vitrocerâmicos com os vidros de origem, e observar o ganho de propriedades após a cristalização, realizaram-se medidas de: densidade, microdureza, tamanho de cristalito, quantidade de fase cristalina pelos métodos de Chung e de Rietveld. Os vidros contendo SnO2/TiO2, e, ZnO/TiO2, como agentes nucleantes, apresentaram forte tendência à cristalização, comportamento que não foi observado com ZrO2/TiO2. Com os dois primeiros pares de agentes nucleantes, obtiveram-se vitrocerâmicos com até 82% de fase cristalina. Os cristais hexagonais de nefelina de 30 nm de diâmetro e 70 nm de altura foram os responsáveis pelo aumento de até 53% na microdureza. Para a comprovação do tamanho de cristalito, implementou-se o método de Fourier através do desenvolvimento de um software, o CRISTALCALC, que atua em ambiente Windows.
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