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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.
101

Synthesis and reactivity of divalent transition metal complexes supported by arylamido ligands.

January 2008 (has links)
Wong, Fai George. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references. / Abstracts in English and Chinese. / Abstract --- p.iii / 摘要 --- p.v / Acknowledgment --- p.vii / Table of Contents --- p.ix / Abbreviations --- p.xiii / Selected List of Tables --- p.xv / List of Compounds --- p.xvi / Chapter Chapter 1 --- Introduction on Metal Amides / Chapter 1.1 --- General Background --- p.1 / Chapter 1.2 --- A General Classification of A/-anionic Ligands --- p.1 / Chapter 1.3 --- Development of Late Transition Metal Amides --- p.3 / Chapter 1.3.1 --- The First Reported Metal Amides from Each Major Block of the eriodic Table --- p.4 / Chapter 1.3.2 --- Metal Amides Supported by the Simple [N(SiMe3)2]- Ligand --- p.4 / Chapter 1.3.3 --- From Simple to Bulkier Silylamido Ligands --- p.6 / Chapter 1.3.4 --- Metal Complexes Supported by Borylamido Ligands --- p.7 / Chapter 1.3.5 --- Metal Complexes Supported by Arylamido Ligands --- p.9 / Chapter 1.3.6 --- Metal Complexes Supported by erfluorinated Arylamido Ligands --- p.10 / Chapter 1.4 --- Objectives of This Work --- p.11 / Chapter 1.5 --- References for Chapter 1 --- p.13 / Chapter Chapter 2 --- Ligand Substitution Reactions of Divalent Late Transition Metal Amides / Chapter 2.1 --- General Background --- p.17 / Chapter 2.2 --- Objectives of This Work --- p.19 / Chapter 2.3 --- Results and Discussion --- p.20 / Chapter 2.3.1 --- Previous Work in Our Group --- p.20 / Chapter 2.3.2 --- Synthesis of Metal Complexes --- p.20 / Chapter 2.3.3 --- Molecular Structure of the Fe(ll) Complex 11 --- p.22 / Chapter 2.3.4 --- Preparation of Mixed Amide-Alkyl Complexes --- p.24 / Chapter 2.3.5 --- Molecular Structures of the Methyl Complexes 12-15 --- p.29 / Chapter 2.3.6 --- Attempts to repare Mixed Amide-Alkoxide Complexes --- p.39 / Chapter 2.3.7 --- Reactivity of the [Co(L2)Me(tmeda)] Complex (17) --- p.39 / Chapter 2.3.8 --- Molecular Structure of the Co(ll) Iodide Complex 18 --- p.43 / Chapter 2.4 --- Summary --- p.45 / Chapter 2.5 --- Experimental Section for Chapter 2 --- p.48 / Chapter 2.6 --- References for Chapter 2 --- p.51 / Chapter Chapter 3 --- Reduction Chemistry of Divalent Late Transition Metal Amides / Chapter 3.1 --- General Background --- p.54 / Chapter 3.2 --- Objectives of This Work --- p.57 / Chapter 3.3 --- Results and Discussion --- p.57 / Chapter 3.3.1 --- Reduction of the Complexes Mn(ll) and Co(ll) Complexes 7 and 9 --- p.57 / Chapter 3.3.2 --- Attempted Synthesis of the Mononuclear Co(l) Complex --- p.59 / Chapter 3.3.3 --- Molecular Structures of the Complexes 19 and 20 --- p.61 / Chapter 3.3.4 --- Reactivity of the Univalent Co(l) Complex [Co(L2)]2 (20) --- p.65 / Chapter 3.4 --- Summary --- p.67 / Chapter 3.5 --- Experimental Section for Chapter 3 --- p.68 / Chapter 3.6 --- References for Chapter 3 --- p.69 / Chapter Chapter 4 --- A reliminary Study on the Coordination Chemistry of erfluorinated Late Transition Metal Amides / Chapter 4.1 --- General Background --- p.71 / Chapter 4.2 --- Objectives of This Work --- p.73 / Chapter 4.3 --- Results and Discussion --- p.73 / Chapter 4.3.1 --- Synthesis of the Ligand recursor[HN(SiMe3)(C6F5)] (21) --- p.73 / Chapter 4.3.2 --- Synthesis of the Lithium Reagent [Li(L3)tmeda]] (22) --- p.74 / Chapter 4.3.3 --- Synthesis of the Fe(ll) and Co(ll) Complexes of the L3 Ligand --- p.75 / Chapter 4.3.4 --- Molecular Structures of the Chloride Complexes 23 and 24 --- p.77 / Chapter 4.4 --- Summary --- p.82 / Chapter 4.5 --- Experimental Section for Chapter 4 --- p.83 / Chapter 4.6 --- References for Chapter 4 --- p.85 / "Appendix 1 General rocedures, hysical Measurements, and X-Ray Structure Analysis" --- p.87 / Appendix 2 Selected Crystallographic Data --- p.89 / Appendix 3 NMR Spectra of Compounds --- p.94
102

Synthetic and spectroscopic studies on some transition metal thiocarbonyl and selenocarbonyl complexes

Cozak, Daniel January 1976 (has links)
No description available.
103

The properties of transition metal complexes with pyrromethenes / by James Ferguson.

Ferguson, James, Ph.D. January 1965 (has links)
[Typescript] / Includes bibliographical references. / 1 v. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1966
104

Career transitions for Swedish golf juniors

Jorlén, Daniel January 2008 (has links)
<p>The purpose of this study was to retrospective investigate perceived demands and barriers for</p><p>golf juniors in their transition from regional to national junior elite competitions, and to find</p><p>out what resources and coping strategies the juniors used to succeed with this transition. The</p><p>developmental model (Wylleman & Lavallee, 2004), The analytical career model</p><p>(Stambulova, 2003) and The athletic career transitions model (Stambulova, 1997; 2003) were</p><p>used as theoretical framework for this study. The interviews were conducted with nine junior</p><p>golf players. A semi-structured interview guide was used consisting of five main themes:</p><p>background information, changes/demands experienced in the transition, resources that helped</p><p>the golf juniors to adjust to the new level, strategies the golf juniors used to adjust to the new</p><p>level and an evaluation of the transition. The result showed that the players perceived the</p><p>practice as more serious with an overall higher quality when they started to compete in</p><p>national competitions. The players increased their training time and started to use a variation</p><p>of exercises that were similar to the different parts of a competition. The competitions were</p><p>also perceived as more challenging with stronger opponents and an increased rivalry between</p><p>the players. Confidence and self-esteem, the will to practice and win are characteristics that</p><p>many players consider to be important internal resources in order to adapt to the national</p><p>junior level. The players observed other players to learn from them and to see what they</p><p>needed to improve. Many players changed their golf coaches around the same time as they</p><p>started to compete at national junior level. The coaches and parents were seen as the most</p><p>important external resources in order to adapt to the national junior level. Many players</p><p>experienced that it would have been hard to play and compete in golf without their parents’</p><p>financial help and support. During the time of the transition, outside golf the players learned</p><p>how to take responsibility and how to take care of themselves through traveling alone,</p><p>meeting new people and living by themselves. The players experienced that the school didn’t</p><p>have any understanding for their need to be free from school. The players also had to give a</p><p>lower priority to some other things in their life in order to have enough time for golf. The</p><p>biggest change was that they had to spend less time with their friends and the different</p><p>activities that they used to do before.</p>
105

Career transitions for Swedish golf juniors

Jorlén, Daniel January 2008 (has links)
The purpose of this study was to retrospective investigate perceived demands and barriers for golf juniors in their transition from regional to national junior elite competitions, and to find out what resources and coping strategies the juniors used to succeed with this transition. The developmental model (Wylleman & Lavallee, 2004), The analytical career model (Stambulova, 2003) and The athletic career transitions model (Stambulova, 1997; 2003) were used as theoretical framework for this study. The interviews were conducted with nine junior golf players. A semi-structured interview guide was used consisting of five main themes: background information, changes/demands experienced in the transition, resources that helped the golf juniors to adjust to the new level, strategies the golf juniors used to adjust to the new level and an evaluation of the transition. The result showed that the players perceived the practice as more serious with an overall higher quality when they started to compete in national competitions. The players increased their training time and started to use a variation of exercises that were similar to the different parts of a competition. The competitions were also perceived as more challenging with stronger opponents and an increased rivalry between the players. Confidence and self-esteem, the will to practice and win are characteristics that many players consider to be important internal resources in order to adapt to the national junior level. The players observed other players to learn from them and to see what they needed to improve. Many players changed their golf coaches around the same time as they started to compete at national junior level. The coaches and parents were seen as the most important external resources in order to adapt to the national junior level. Many players experienced that it would have been hard to play and compete in golf without their parents’ financial help and support. During the time of the transition, outside golf the players learned how to take responsibility and how to take care of themselves through traveling alone, meeting new people and living by themselves. The players experienced that the school didn’t have any understanding for their need to be free from school. The players also had to give a lower priority to some other things in their life in order to have enough time for golf. The biggest change was that they had to spend less time with their friends and the different activities that they used to do before.
106

Evaluating a Training Process in a Software Handover Context

Khan, Ahmad Salman, Kajko-Mattsson, Mira January 2011 (has links)
Although there exist some people management process models related to the education and training of software engineers, there are no process models that are adapted to specific software engineering contexts and processes. In this paper, we suggest a set of education and training activities that are applicable in the context of a handover process. We then evaluate these activities within twenty organizations. Although our results reveal great diversity of using these activities, they still show that they are realistic and appropriately mirror the industrial status within a software handover context. / <p>© 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. QC 20120223</p>
107

Towards Taxonomizing of Core Software Handover Activities

Khan, Ahmad Salman, Kajko-Mattsson, Mira, Shahid, Muhammad Imran January 2010 (has links)
Handover is an essential component in the total lifecycle management of software systems. Despite this, the software community has not agreed on its basic activities and concepts yet.  In this paper, we evaluate a preliminary version of EM3 taxonomy of handover activities. Our goal is to evaluate its credibility in an industrial setting and find feedback for creating a transition process.  The evaluation is made in the context of an in-house handover process. / QC 20120221
108

Democratic transition and the electoral process in Mongolia

Bayantur, Gerelt-Od 14 April 2008
This thesis is a study democratic transition paradigm in Mongolia from its communist past to its present status as a democratic country. The study is informed by the democratic transition paradigm by Guillermo ODonnell and Philippe Schmitter and by the work of Thomas Carothers, a critic of that paradigm. It examines the effectiveness of this theoretical work in guiding the study of an emergent democracy and in that context focuses on the role of elections as well as other internal factors, as well as historical and external factors relevant to democratic transitions. <p>The study finds that both transition paradigm and Carotherss work are useful guides to understanding the Mongolian case but also it finds flaws in each of them.
109

The Observation and Study of ELP V5-120 Conformational Changes

Zhou, Qian 14 March 2013 (has links)
Elastin-like polypeptides (ELPs) consist of simple pentapeptide repeats which can be easily modified by substituting various amino acid residues to control its properties. This provides an ideal platform for studying hydrophobic collapse and secondary/tertiary structure formation. In this thesis, the collapse process of ELP was studied with differential scanning calorimetry (DSC). In DSC thermal cycling, a clear conformational transition was observed. Also, a transiently stable state of ELP V5-120 was noted and it was found that the formation of this state was related to temperature, ramping rate and stabilization time. To explain this, a conformational redistribution model is proposed in which there are two conformations in the ELP solution below its transition temperature. However, after the system is heated up and cooled back down, one of the conformations remains the same while the other one changes to two new conformations. After the conformational distribution is done, the ELP stays in a transiently stable state before gradually shifting back to the original, pre-heat-treatment state. Bi-Gaussian fitting was used to fit DSC response curve and monitor the changes of the different conformations in the system. The influence of ramping rate on the process of conformational redistribution was explained through the equilibration time at each temperature point through heating and cooling. Overall, the ELP V5-120 system is in a dynamic conformational equilibrium, and the equilibration time is much longer than earlier expectations.
110

The Need for a Physical Education: Examining Physical Activity During The Transition to University

Kwan, Matthew 31 August 2011 (has links)
While physical activity (PA) declines across the lifespan, this does not occur linearly. Declines are most pronounced during the transition into early adulthood. This dissertation consisted of three studies examining PA decline during the transition into early adulthood: (1) to understand patterns of PA and other health behaviours of Canadians; (2) to understand reasons for PA declines during entry into university; and (3) to examine the feasibility and effects of a website-delivered PA intervention. Study 1 utilized multilevel modeling to identify patterns of PA, binge drinking and smoking among a nationally-representative cohort of adolescents (N = 640). Results found PA decline evident among all young adults transitioning into early adulthood regardless of educational trajectory – declines being most pronounced among college/university males – highlighting the saliency of PA decline, as other health behaviours stabilized or declined during early adulthood. Given justification for intervening with the university population, study 2 explored students’ perceptions of PA, and their preferences towards a PA intervention. Eight focus groups were conducted with first-year university students (N = 45). Results found students being concerned with PA decline, and were receptive to an Internet-based intervention. However, such concerns are inflected with ambivalence, potentially posing a challenge for interventionists. Findings from studies 1 and 2 informed the development of a website-delivered PA intervention – ‘Active Transition’. Pre-testing was conducted with first-year students (N = 15) and PA experts (N = 7), which found the website and its content being acceptable and usable. Results of the efficacy trial (N = 65) found Active Transition to successfully attenuate declines in PA cognitions, and to some extent, PA behaviours. This confirms the Internet being a useful tool for delivering PA interventions in this population. However, given modest compliance in terms of usage, future work is required to evaluate the addition of more current/popular strategies for engaging students. Overall, this dissertation has provided justification for why it is critical that research continues work with this population, and has provided the foundations in helping with the long-term vision of implementing a population-level initiative to help students attenuate the significant declines in their PA behaviours.

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