• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 58
  • 12
  • 5
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • Tagged with
  • 250
  • 250
  • 114
  • 55
  • 48
  • 39
  • 37
  • 36
  • 36
  • 28
  • 28
  • 27
  • 24
  • 24
  • 23
  • 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.
31

Cationic polymerization of glycidyl ethers and furans : improved electron beam and UV cured epoxy networks /

Lee, Jihean. Palmese, Giuseppe R. January 2007 (has links)
Thesis (Ph.D.)--Drexel University, 2007. / Includes abstract and vita. Includes bibliographical references.
32

A study of the magnetic and structural properties of ultrathin Fe/Ni(111/W(110) films /

Johnston, Hamish. January 1997 (has links)
Thesis (Ph.D.) -- McMaster University, 1997. / Includes bibliographical references (leaves 149-152). Also available via World Wide Web.
33

Functionalization dependance of calix[6]arene contrast and sensitivity to electron beam exposure /

Ralls, Daniel M. January 1900 (has links)
Thesis (M.S.)--Texas State University--San Marcos, 2008. / Vita. Includes bibliographical references (leaves 50-51). Also available on microfilm.
34

Acceptance calculations for a charge breeder based on an Electron Beam Ion Trap

Gavartin, Emanuel. January 2008 (has links)
Thesis (M.S.)--Michigan State University. Dept. of Physics, 2008. / Adviser, Prof. Georg Bollen"--Acknowledgments. Title from PDF t.p. (viewed on Aug. 4, 2009) Includes bibliographical references (p. 71-72). Also issued in print.
35

A study of implantation and irradiation induced deep-level defects in 6H-SiC /

Gong, Min. January 1998 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1999. / Includes bibliographical references.
36

Electron cyclotron wave propagation and absorption in a magnetic mirror

Rice, Bradley Woodward. January 1984 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1984. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaf 51).
37

Estudo do efeito da radiação ionizante por feixe de elétrons sobre o polietileno de ultra alto peso molecular virgem e reciclado industrial

ROSARIO, SALMO C. do 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:52:12Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:02Z (GMT). No. of bitstreams: 0 / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
38

Estudo do efeito da radiação ionizante por feixe de elétrons sobre o polietileno de ultra alto peso molecular virgem e reciclado industrial

ROSARIO, SALMO C. do 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:52:12Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:02Z (GMT). No. of bitstreams: 0 / O polietileno de ultra alto peso molecular (UHMWPE) é um plástico de engenharia que tem várias aplicações atualmente, mormente em áreas específicas da indústria e da medicina. O UHMWPE pode ser utilizado ainda em outras aplicações: defensas portuárias; guias de corrente; revestimentos de caçambas, silos e calhas; engrenagens; buchas; guias de correias e próteses cirúrgicas. Esta gama de aplicações se deve ao fato das excelentes características técnicas que este material possui, como: alta resistência a abrasão, elevada resistência ao impacto, anti-aderência, atóxico, excelente resistência química, baixo peso específico, fácil usinagem e alta resistência a fadiga. Os tipos de polietileno de ultra alto peso molecular (UHMWPE) utilizados neste trabalho foram o UTEC 3041 e UTEC 6541 da Braskem. A reciclabilidade do UHMWPE ganhou interesse, porque a utilização desta matéria-prima na última década cresceu mais de 600%, tornando-se um dos plásticos de engenharia mais utilizados para obtenção de peças usinadas depois da poliamida. Com o crescimento na utilização deste polímero na confecção de peças para maquinários, o seu desperdício tem sido muito grande, porque o resto deste material é desprezado, geralmente não sendo reaproveitado. Este trabalho tem como objetivo reciclar o UHMWPE UTEC 3041 e estudar as propriedades deste material virgem e reciclado e comparar os resultados entre si e com o UHMWPE UTEC 6541, e com estes materiais submetidos a diferentes doses de radiação. / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
39

Laser spectroscopy of highly charged ions using an electronic beam ion trap

Back, Tekla January 1998 (has links)
No description available.
40

A method of measuring the electron energy losses in transmission through thin films

Stewart, John Patrick 01 May 1969 (has links)
The energy distribution in an electron beam transmitted by a thin aluminum film was studied by a retarding potential method in which the energy analysis could be made as a function of the polar angle and azimuth of scattering. The results indicated that the transmitted beam contained electrons which had lost essentially zero energy and groups of electrons which had suffered losses of approximately15 ev and 25 ev and possib1y 75 ev. In addition there appeared to be a continuous background of energy losses over the range studied (from 0 to 80 ev). The resolution of the energy analyser was limited by the separation of the data points and was not adequate to observe the dependence of the 15 ev energy loss (plasma loss) on the polar angle of scattering. This study demonstrated the feasibility of this method of energy analysis as well as the short-comings of the apparatus. Suggestions for future improvements are made.

Page generated in 0.0206 seconds