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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.
21

A review of the specific performance characteristics of hard rock tunnel boring machines

09 September 2015 (has links)
M.Ing. / This dissertation provides a review of the most notable papers published with regard to the specific performance characteristics of Tunnel Boring Machines (TBM's) during the past twenty years. It is a literature study of a Bibliography of 57 publications, which were screened from an original list of 970 documents ...
22

Designing a Method for Measuring Magnetoresistance of Nanostructures

Scherer, Donald 22 May 2006 (has links)
The ultimate intent of this research program is to produce nanosized magnetic tunneling junctions, and to study the physical properties of such devices. The physical phenomena of nanosized tunneling junctions are significantly different than that of currently popular micro-sized junctions. There is a considerable amount of work that must be done prior to producing these new junctions to ensure that good measurements can be carried out once the structures have been built. This thesis describes the efforts taken to design a measurement platform that will accurately measure tunneling magnetoresistance (TMR) in nanosized Magneto-tunneling Junctions (MTJ). The testing done with this system at various stages throughout the design and testing process confirm the expectations for the performance of the system. Voltage-current measurements can be performed on objects ranging from a few nanometers in size to micrometer sized. Traditional micro-sized MTJs have not been excluded in this design.
23

Tunnels and tunneling

Fulcher, James E. January 1886 (has links) (PDF)
Thesis--University of Missouri, School of Mines and Metallurgy, 1886. / The entire thesis text is included in file. Holograph [Handwritten and illustrated in entirety by author]. Title from title screen of thesis/dissertation PDF file (viewed September 23, 2008)
24

Kinetic and morphological studies of palladium oxidation in O₂-CH₄ mixtures

Han, Jinyi. January 2004 (has links)
Thesis (Ph. D.)--Worcester Polytechnic Institute. / Keywords: Oxidation; Palladium; Scanning Tunneling Microscopy; Palladium oxide; PdO morphology; PdO surface area measurement; Turnover rate for methane combustion; Oxygen. Includes bibliographical references.
25

Tunneling in strongly correlated materials

Maltseva, Marianna, January 2009 (has links)
Thesis (Ph. D.)--Rutgers University, 2009. / "Graduate Program in Physics and Astronomy." Includes bibliographical references (p. 67-74).
26

A scanning tunneling microscopy investigation of YBa₂Cu₃O₇-[subscript x] /

Derro, David Joseph, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 52-55). Available also in a digital version from Dissertation Abstracts.
27

Three-dimensional numerical studies of "NATM" tunnelling in stiff clay /

Lee, Gordon Tsz Kit. January 2003 (has links)
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003. / Includes bibliographical references (leaves 202-209). Also available in electronic version. Access restricted to campus users.
28

Improvements to the prediction of ground settlements associated with shallow tunnels in weak rock /

Asche, Harry Raoul. January 2002 (has links)
Thesis (Ph. D.)--University of Queensland, 2003. / Includes bibliographical references.
29

Construction and assembly of a scanning tunneling microscope

Ponath, Patrick 03 January 2013 (has links)
In the scope of this master thesis, a home-made brass scanning tunneling microscope (STM) was machined, assembled and tested for its functionality. For this microscope, a new approach-technique was used which follows the design suggested by Pan. The difference to Pan's design is the use of piezoplates, instead of piezostacks. Hence, the approach is still based on the stick and slip motion, but it allows the microscope to be more compact. A new and simple electronic circuit, in order to control the approach, is presented and was put together. This circuit is based on mechanical relays, which provide a sufficient long time gap between the single moving steps, due to their mechanical functional principle. Subsequently the approach-technique and the scanning was successfully tested. Finally, first images of HOPG were taken under ambient conditions. / text
30

Mixed face tunnelling in Hong Kong

Wai, Man-hon, John., 韋文瀚. January 2005 (has links)
published_or_final_version / Applied Geosciences / Master / Master of Science

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