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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

Untersuchung über die Effektivität einer Glattflächenversiegelung (Light Bond R) als Schutz vor Entkalkungen während Multibrackettherapie

Hartmann, Amely Gundula, January 2008 (has links)
Tübingen, Univ., Diss., 2008.
2

A rigorous proof of some heuristic rules in the Method of Brackets to evaluate definite integrals

January 2018 (has links)
archives@tulane.edu / Many symbolic integration methods and algorithms have been developed to deal with definite integrals such as those of interest to physicists, theoretical chemists and engineers. These have been implemented into mathematical softwares like Maple and Mathematica to give closed forms of definite integrals. The work presented here introduces and analytically investigates an algorithm called Method of brackets. Method of brackets consists of a small number of rules to transform the evaluation of a definite integral into a problem of solving a system of linear equations. These rules are heuristic so justification is needed to make this method rigorous. Here we use contour integrals to justify the evaluation given by the algorithm. / 1 / Tri Ngo
3

Digital analysis of staining properties of clear aesthetic brackets

Rykiss, Jared 14 September 2011 (has links)
AIM: To analyze staining properties of aesthetic brackets. MATERIAL & METHODS: A total of 400 tooth-coloured brackets from 10 brands 5 ceramic and 5 plastic) were investigated. Cumulative effects of staining agents were analyzed at simulated light and heavy consumption levels. Study groups were immersed in the staining agents consecutively at 37°C. The control group was exposed to artificial saliva. Samples were analyzed digitally to obtain the L*, a*, and b* (lightness, red-green, and yellow-blue) colour readings. Using these values total colour change (ΔE*) was also calculated. A general linear model (ANOVA) test was used for statistical comparisons. RESULTS: Significant differences were observed in L*, and b* values of ceramic brackets at all consumption levels (p≤.0001). All values had significant differences amongst the plastic brackets (p≤.0001), except for L* with heavy exposure. Total ΔE* values for ceramic and plastic brackets were 11 and 26, respectively. CONCLUSIONS: Both plastic and ceramic brackets showed changes in colour when exposed to staining agents, with plastic brackets being the most affected.
4

Digital analysis of staining properties of clear aesthetic brackets

Rykiss, Jared 14 September 2011 (has links)
AIM: To analyze staining properties of aesthetic brackets. MATERIAL & METHODS: A total of 400 tooth-coloured brackets from 10 brands 5 ceramic and 5 plastic) were investigated. Cumulative effects of staining agents were analyzed at simulated light and heavy consumption levels. Study groups were immersed in the staining agents consecutively at 37°C. The control group was exposed to artificial saliva. Samples were analyzed digitally to obtain the L*, a*, and b* (lightness, red-green, and yellow-blue) colour readings. Using these values total colour change (ΔE*) was also calculated. A general linear model (ANOVA) test was used for statistical comparisons. RESULTS: Significant differences were observed in L*, and b* values of ceramic brackets at all consumption levels (p≤.0001). All values had significant differences amongst the plastic brackets (p≤.0001), except for L* with heavy exposure. Total ΔE* values for ceramic and plastic brackets were 11 and 26, respectively. CONCLUSIONS: Both plastic and ceramic brackets showed changes in colour when exposed to staining agents, with plastic brackets being the most affected.
5

Deformation of reinforced polycarbonate orthodontic brackets stressed by a labiolingual moment

Bales, Jeffrey M. January 1998 (has links)
Thesis (M. Sc.)--University of Manitoba, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
6

Deformation of reinforced polycarbonate orthodontic brackets stressed by a labiolingual moment

Bales, Jeffrey M. January 1998 (has links)
Thesis (M. Sc.)--University of Manitoba, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
7

A comparison of frictional forces of conventional ligation and self-ligation bracket systems

Reed, Barbra J. January 1998 (has links)
Thesis (Ph. D.)--University of Louisville, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
8

Optimizing the shear bond strength of orthodontic brackets using hybrid glass ionomer materials

Song, Yung-Jeng. January 1996 (has links)
Thesis (M. Sc.)--University of Manitoba, 1996. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
9

The effect of lateral bracing on the dynamic response of wood floor systems /

Stark, John W., January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 162-164). Also available via the Internet.
10

Optimizing the shear bond strength of orthodontic brackets using hybrid glass ionomer materials

Song, Yung-Jeng. January 1996 (has links)
Thesis (M. Sc.)--University of Manitoba, 1996. / Includes bibliographical references.

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