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On Quasi-Volume-Filling SurfacesLiu, Pan 24 April 2012 (has links)
The purpose of this paper is to construct a Quasi-volume-filling surface and study its properties. We start with the construction of a volume-filling surface, the Pólya surface, based on Pólya's curve, by rotating the Pólya's curve in 3-dimensional space. Then we construct a Quasi-space-filling curve in 2-dimensions, the Quasi- Pólya curve, which approximates the Pólya's curve and fills a triangle up to a residual small surface of arbitrary size. We prove that the Quasi-Pólya curve satisfies the open set condition, and there exists a unique invariant (self-similar) measure consistent with the normalized Hausdorff measure on it. Moreover, the energy form constructed on Quasi-Pólya curve is proved to be a closed & regular form, and we prove that the Quasi-Pólya curve is a variational fractal in the end. Next, we use the same idea, by rotating the Quasi-Pólya curve in 3-dimensional space, to construct the Quasi-Pólya surface, which is a Quasi-volume-filling surface and approximates to Pólya surface in some sense.
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Evaluation of glass ionomer cement restorations : a confocal microscopical studyNaasan, Mohamad A. January 1998 (has links)
No description available.
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Compaction studies on hydraulic fillKalia, Tejendra Nath January 1974 (has links)
No description available.
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An investigation into the influence of sodium silicate on the physical and mechanical properties of minefill : by Seyed Mehdi Razavi.Razavi, Seyed Mehdi. January 2007 (has links)
Returning waste material underground, as backfill, has been practiced for many years so as to improve the economical and environmental performance of underground mining operations. A specific type of backfill, which is used to fill mined areas that will not be exposed to further mining, is called hydraulic backfill. Cemented backfill has also been used to provide mechanical support for underground mining. Such backfill has allowed mining companies to extract more ore, while simultaneously improving working and environmental conditions. Cemented backfill, however, represents 50 to 85 percent of operating costs compared with the 5 to 10 percent that hydraulic backfill consumes. / The objective of this thesis is to investigate use of sodium silicate as a partial or total replacement for cement in stabilised backfill. Sodium silicate is a viscous material that is usually used to activate pozzolanic materials such as slag and fly ash. The chemical compound has many applications, namely, in waste treatment, cement and other construction materials. / In order to determine the influence of sodium silicate on backfill performance, a series of laboratory experiments were carried out on samples with different binder compositions, such as: cement; slag and cement; slag, cement and sodium silicate; and slag and sodium silicate. Additionally, the effects of mixing time and addition order on the backfill samples' performance were studied. The subsequent thesis focuses mainly on the strength of paste and slurry backfill samples containing sodium silicate in addition to the observation of a number of experimental variables, which include: pulp density (relative amount of water), curing time, and binder dosage. In order to investigate the overall suitability of sodium silicate for use in stabilised backfill, other properties such as porosity, elastic modulus, and trends of water release are also studied. / The results of the research endeavour demonstrate that sodium silicate-fortified backfill materials behave favourably compared with cemented backfills. Sodium silicate, thus, has potential as a backfill binder or additive.
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In vivo investigation of four root canal sealersDietz, Anthony. January 1967 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1967. / Typescript (carbon copy). Includes bibliographical references (leaves 43-44). Also issued in print.
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Cavit a tissue tolerance study /Satovsky, James B. January 1974 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1974. / Typescript (photocopy). Includes bibliographical references (leaves 32-34). Also issued in print.
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In vivo investigation of four root canal sealersDietz, Anthony. January 1967 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1967. / Typescript (carbon copy). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 43-44).
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Cavit a tissue tolerance study /Satovsky, James B. January 1974 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1974. / Typescript (photocopy). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 32-34).
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The numerical simulation of the flow of an injected grout in underground room and pillar coal minesStiles, James M. January 1999 (has links)
Thesis (Ph. D.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains vii, 145 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 71-72).
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Rat connective tissue reactions to implants of certain pulp capping and cavity lining materialsZawawi, Hala A. M., 1931- January 1958 (has links)
Indiana University-Purdue University Indianapolis (IUPUI)
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