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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.
201

The role of massage in stress, bonding and development of babies / Nelmarie Boshoff

Boshoff, Nelmarie January 2008 (has links)
The focus of the study is on the effect of massage on an infant's stress level, development and the emotional bond between the infant and the mother. Eight mother-infants dyads were recruited and the infants were between the ages of 3 to 9 months. The dyads were paired to ensure similarity of the groups and divided into an experimental and control group. The research made use of a multi-method, pre and post-test design. The measures used during the pre and post-testing included a biographical questionnaire, the Griffiths Mental Development Scales, the Parenting Stress Index and the Mother-to-lnfant Bonding Scale. Personal interviews were conducted with each mother as part of the post-test procedures. Saliva samples from every mother and infant were retrieved on three separate occasions to determine cortisol levels before, during and after the intervention. The experimental group's mothers received training to perform infant massage and were requested to massage their infants at least four times a week for the duration of four months. The data was processed by the Statistical Consultation Service of the Northwest University at Potchefstroom. The non-parametric test, Mann-Whitney U Test, was used to determine any statistical and/or practical significant differences between the experimental and control group before and after implementation of the intervention. The non-parametric test, Wilcoxon Matched-Pairs Signed Rank T-Test, was used to determine the differences within both the experimental and control group. Friedman's ANOVA was used to determine the changes within the groups regarding cortisol levels. As the sample size for this study is small and the possibility of determining statistical significance was slight, the effect sizes were considered for this study. The study had six aims. The first aim focused on the effect of infant massage on the infants' stress levels as measured through cortisol. No statistical significance could be found and the results revealed that the experimental group's infants' stress levels did not decrease. The second aim investigated the effect of infant massage on the mothers' stress levels as measured on the Parenting Stress Index and cortisol levels. No statistical significance could be determined but practical significant differences on the Parenting Stress Index indicated decreased maternal stress levels in the experimental group. These results differ from the cortisol levels that revealed the experimental group's mothers to experience higher levels of stress. The third aim focused on the effect of infant massage on the bond between mother and infant and found that the bond improved due to the intervention. The fourth aim investigated the effect of massage on the infants' development and although no statistical significance could be determined, practical significance could be found, indicating improvements on the motor scales for the experimental group. The fifth aim explored the mothers' subjective experience of infant massage as reported through qualitative measures. The sixth aim compared the mothers as participants' experience of infant massage as reported through quantitative measures and through qualitative measures. Strengths of the study included making use of a multi-method design and following a multi-disciplinary approach. Limitations of the study included a small sample size, the participants' restricted background and difficulty to ensure that the participants comply with the instructions for sampling saliva. Based on the results from the study, it can be concluded that infant massage have an effect on the mother-infant relationship, the mothers' subjective view of their stress levels and specified areas of the infants' development. According to the results from this study infant massage did not have an effect on the infants and mothers' stress levels as measured through cortisol. / Thesis (M.Sc. (Psychology))--North-West University, Potchefstroom Campus, 2009.
202

A study of the interactions between ylidic phosphorus species and organic acids

Lamb, Sarah January 1998 (has links)
This thesis describes the synthesis and characterisation of phosphonium aryloxides, amides and phosphides. These compounds have been formed via the deprotonation of organic acids [of the type ROH, and R(_2)X, where X = NH, PH, R = aryl group] by basic phosphonium ylidic species [R(_3)PX, X = CH(_2,) C(Me)H, C(Ph)H, NH] in mixtures of hydrocarbon (toluene) and/or polar (acetonitrile, thf) solvents. All of these compounds contain both acidic CHs and 'naked' anions which promote extensive hydrogen bonding. Chapter 1 provides an outline of the fields of ylidic chemistry and hydrogen bonding. In Chapter 2, general experimental methods are described. Chapter 3 records all experimental results pertaining to this work. Here preparation of starting materials is documented, followed by an account of the synthesis and characterisation of twenty-three compounds. For all compounds melting point measurements, (^1)H NMR, (^31)P NMR, infrared spectra, and elemental analysis are recorded. Discussion of these results is documented in Chapters 4 to 7. Where possible, solid-state structures for compounds obtained by single crystal X-ray diffraction (nineteen structures) and single crystal neutron diffraction (two structures) are included. Chapter 4 discusses simple phosphonium aryloxide salts, while Chapter 5 is concerned with related phosphonium amides and phosphides. Chapter 6 deals with an extension of this work involving multifiinctional organic acids. Finally, Chapter 7 discusses unexpected results resulting from the work described in Chapter 6.
203

Silicon micromachining technology for drop-on-demand liquid dispensers

Prochaska, A. January 2001 (has links)
No description available.
204

Hydrogen Bonding Interactions of Ferrocene-peptides: From Molecule to Large Scale Assemblies

Beheshti, Samaneh 10 December 2012 (has links)
The main goal of this thesis was to explore the role of H-bonding interactions in ferrocene peptide conjugates at the molecular and supramolecular level. With the help of detailed spectroscopic and crystallographic studies, the intermolecular association of a range of conjugates was studied and described here. It was shown that C-terminal modifications directed the supramolecular assembly. In the case of Fc[CO-Gly-Val-OH]2, the C-terminal carboxylate group directed intermolecular interactions, causing formation of a supramolecular architecture that was characterized by large solvent-filled hydrophobic channels. In the absence of this directional group, as was the case in Fc[CO-Leu-Val-OMe]2 extended β-sheets were formed. Hierarchical self-assembly of disubstituted ferrocene peptide conjugates possessing Gly-Val-Phe and Gly-Val-Phe-Phe peptide substituents gave rise to nano- and micro-sized assemblies. Spontaneous self-assembly of Fc-peptides through intra-and intermolecular hydrogen bonding interactions induced supramolecular building blocks, which further associated to fibers, large fibrous crystals, and twisted ropes. Next, intermolecular H-bonding interactions were studied using a surface-based approach. A fragment of the amyloid-beta (Aβ) peptide was bound to a gold surface through a C-terminal Cys. Various aspects of the peptide film were examined using different electrochemical and surface analytical techniques. The interaction of Congo red and of Lys-Leu-Val-Phe-Phe with the immobilized Aβ fragment was studied using electrochemical methods, showing responses that indicated intermolecular interactions. This surface approach was used to probe the interaction of a series of ferrocene peptides (Fc-CO-Leu-Val-Phe-Phe-OX and Fc-CO-Lys(Boc)-Leu-Val-Phe-Phe-OX with X=H and Me) with the surface-bound Aβ fragment. Biomolecular interactions between Fc-peptides and the Aβ-modified surface were studied by electrochemical methods. The current response of the Fc redox process was modulated by the interaction with the Aβ-modified surface.
205

Syntheses and hydrogen bonding properties of dipyrrinone analogs /

Salzameda, Nicholas Thomas. January 2006 (has links)
Thesis (Ph. D.)--University of Nevada, Reno, 2006. / "December, 2006." Includes bibliographical references (leaves 120-123). Online version available on the World Wide Web. Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2006]. 1 microfilm reel ; 35 mm.
206

Clinical evaluation of temporary adhesive resin bonded anterior acrylic bridges

Eckhardt, Carl C. January 1978 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1978. / Typescript (photocopy). Includes bibliographical references (leaves 141-148). Also issued in print.
207

Evaluation of cervical retention in Class V composite restorations using a new dentin adhesive

Wiley, Paul M. January 1989 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1989. / Includes bibliographical references (leaves 115-125). Also issued in print.
208

A scanning electron microscope study of surface preparation and bonding to tooth tissue

Bloxham, Graeme P. January 1984 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1984. / Typescript (photocopy). Includes bibliographical references (leaves 96-108). Also issued in print.
209

Nuclear-magnetic-resonance studies of hydrogen bonding

Davis, Jefferson Clark, January 1959 (has links)
Thesis--University of California, Berkeley, 1959. / Includes bibliographical references (p. 74-76).
210

Evaluation of cervical retention in Class V composite restorations using a new dentin adhesive

Wiley, Paul M. January 1989 (has links)
Thesis (M.S.)--University of Michigan, Ann Arbor, 1989. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 115-125).

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