Dissertations / Theses: 'Crown'

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Park, Stuart R. "Homoleptic crown cabenes." Thesis, University of Strathclyde, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488554.

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Despite the resurgence of research on N-heterocyclic carbene ligands there has been a dearth of multi-dentate macrocyclic ligands of this class reported. Herein we report the synthesis and characterisation of a tetradentate macrocyclic ligand.

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2

Hurter, Jade. "Python Crown Girl." ScholarWorks@UNO, 2016. http://scholarworks.uno.edu/td/2156.

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Zang-Bodis, John Robert. "Mesiodistal crown size in relation to the risk and severity of malocclusion." View the abstract Download the full-text PDF version, 2009. http://etd.utmem.edu/ABSTRACTS/2009-030-Zang-Bodis-index.htm.

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Thesis (M.S.)--University of Tennessee Health Science Center, 2009.
Title from title page screen (viewed on October 8, 2009). Research advisor: Edward F. Harris, Ph.D. Document formatted into pages (x1vii, 470 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 151-160).

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Page, Wesley G. "Bark Beetle-Induced Changes to Crown Fuel Flammability and Crown Fire Potential." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/2081.

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Recent outbreaks of mountain pine beetle (Dendroctonus ponderosae Hopkins) in lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) forests and spruce beetle (Dendroctonus rufipennis Kirby) in Engelmann spruce (Picea engelmannii Parry ex Engelm.) forests have affected vast areas across western North America. The highlevels of tree mortality associated with these outbreaks have raised concerns amongst fire managers and wildland firefighters about the effects of the tree mortality on fire behavior, particularly crown fire behavior, as crown fires hinder the ability of firefighters to conduct safe and effective fire suppression operations. Current information regarding crown fire dynamics in recently attacked forests is limited to results obtained from simulations employing either inappropriate and/or unvalidated fire behavior models based on inadequate descriptions of crown fuel flammability. The purpose of this research was to measure and characterize the changes in crown fuel flammability caused y recent bark beetle attack and to describe the implications of these changes on crown fire potential in affected forests. Results indicated that bark beetle attack causes a significant decline in moisture content and change in chemical composition in lodgepole pine and Engelmann spruce tree foliage, which substantially increases foliage flammability. Additionally, it was found that conventional models used to predict the moisture content of fine, dead surface fuels were inappropriate for predicting the moisture content of foliage on mountain pine beetle-attacked lodgepole pine trees during the red stage. Therefore, calibrated operational models and models based on diffusion theory were developed and evaluated that could accurately predict hourly fluctuations in moisture content. The implications of these changes on crown fire potential are dependent upon a host of site specific factors including outbreak duration, severity, and the specific stand characteristics. Based on our results, we believe that current fire behavior models, including popular semi-empirical and physics-based models, are currently inadequate for accurately predicting crown fire potential in forests recently attacked by bark beetles. In order to make significant progress in our understanding of crown fire potential in recently attacked forests, a substantial effort to document wildfire behavior in the field and/or to conduct experimental fires is needed.

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Babie, Paul Theodore. "Crown land in Australia." Thesis, University of Oxford, 2001. https://ora.ox.ac.uk/objects/uuid:7e3678b3-a274-468c-bbc0-ef348bb51a00.

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Property theory has long explored the meaning and content of private property. Similarly, one finds no shortage of analysis of common or communitarian property. In the theoretical literature, however, one finds very little writing about public property, a third, very significant, type of property. This lack of attention is not due to a lack of examples; on the contrary, examples abound. This thesis offers a theoretical analysis of one such example: Crown land in Australia. Crown land is a largely forgotten and therefore under-analysed aspect of Australian real property law. This lack of analysis has produced significant confusion in recent judicial developments concerning Australian common law native title. In order to alleviate the potential for confusion, this thesis fills a long-standing gap in the literature of Australian real property law. In order to fill this gap and to provide a much-needed analytical account, it is necessary to make use of working definitions of private, public and communitarian property. This thesis provides each. First, using JW Hams' Property and Justice, it constructs a working definition of private property. From that, by way of contrast, a working definition of public property is offered. Finally, by way of contrast to both private and public property, a working definition of communitarian property is also developed. Armed with working definitions of private, public and communitarian property, the thesis provides an analytical account of Crown land in Australia. It describes Crown land as the quasi-ownership use-privileges and control-powers which the Crown, by virtue of its prerogative power over land, enjoys in Australian land. The Crown enjoys differently packaged bundles of such privileges and powers over many different sorts of land, such as those which have never been allocated for any use, specific natural resources such as minerals or petroleum, those over which Australia's Aboriginal peoples enjoy native title, and even those over which private persons hold freehold estates or statutory leases. All such lands, due to the Crown's quasi-ownership privileges and powers therein, can be called Crown land, which embraces a continuum of locations, each defined by a unique package of such privileges and powers over the relevant type of land. The thesis calls this the Crown land continuum, which, in its totality, is a working example of public property.

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Baskerville, Bruce Gordon. "The Chrysalid Crown: An un-national history of the Crown in Australia 1808 – 1986." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16395.

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This thesis set out to answer a deceptively simple question: why did the 1999 referendum to abolish the Australian Crowns fail? It focuses on the evolving civic personalities, communal identities and popular representations of the Crown in Australia, and how those representations and agents changed over 180 years. Capacities for the Crown’s continuing mutability, especially its divisibility, are at the heart of these imaginings. The answer to the question lies partly in emotions, in passion and the heart rather than in reason and the mind, along with a complex historical mix of other factors. Each chapter focuses on a single event or artefact: a usurpation of vice-regal authority, a proposal for a cadet kingdom of Australia, a mystic royal response to anti-German persecution, a State’s attempt to secede under the Crown and the invention of a chivalric order. The thesis posits a complex, iterative and changing network of social relationships rather than a simple metropole-periphery binary or hierarchy. It disaggregates ideas of crown, Britishness, empire, nation and Australianess, and concludes on the eve of the 1988 bicentennial celebrations when the Crown in Australia appeared splendid, popular, modern, federal, natural and regenerative. They were characteristics that, with hindsight, girded an Australian institution at once ancient and contemporary for the challenges of the 1990s when it stared-down what appeared to be an existential threat from Australian republicanism.

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McGladdery, Christine Anne. "Crown-magnate relations, 1437-1460." Thesis, University of St Andrews, 1988. http://hdl.handle.net/10023/2619.

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This thesis examines the relations between James II and those magnates who were active in politics during his reign, which lasted from 1437-1460. The Black Douglas family were of particular importance during both the minority and the personal rule of James II and their rise to prominence, conflict with the king, and ultimate downfall is studied with particular reference to their bases of power and support. The attitude of the king to the higher, and, where appropriate, lesser nobility is considered, and the thesis traces the development of the political community from the beginning of the reign, when the ranks of the higher nobility were severely depleted, to the state of the realm and its leaders at the time of the king's death in 1460. The major conflict with the Black Douglases is examined through official records and chronicle references and the various stages in the development of the contest are outlined and assessed. The attitude of the other members of the political community to the Crown/Douglas conflict is studied, and the king's methods of courting support, particularly through patronage, are traced. The attacks launched by the king on certain members of the nobility or, in the case of the Livingston faction, royal office holders, are considered, as are his efforts to build up the position of certain families and replenish the ranks of the nobility by creating certain earldoms and lordships of parliament. The rise of honorific dignities, i. e, the bestowal of titles which did not necessarily include the granting of any new land, is discussed, and the king's relationship with the three estates gathered in Parliament or General Council is assessed. The view of the reign of James II which appears in modern histories is traced through from contemporary sources with particular reference to the histories written in the sixteenth century which have provided much of the material, including errors and distortions, which have formed recent assessments.

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Sutton, Liam Richard. "Studies on functionalised crown thioethers." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285639.

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Nearchou, Antony. "Zeolites fit for a crown." Thesis, University of Bath, 2019. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767594.

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10

Phillips, Matthew. "Church, crown and complaint : petitions from bishops to the English crown in the fourteenth century." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13805/.

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This thesis explores the interaction of bishops with both the English crown and members of late medieval society more generally by focusing on petitions and the supplicatory strategies adopted by bishops in their endeavours to secure legal remedy. Aside from revealing that bishops were often indistinguishable from lay petitioners in terms of the content of their petitions, with many of their complaints arising from their role as great landlords and tenants-in-chief rather than relating to the exercise of episcopal office, this research has also demonstrated that distinct supplicatory cultures separated the clergy from the laity. Notably, whereas petitions from lay supplicants often incorporated crown-alignment rhetoric into their petitions, thereby mirroring the language of ‘common profit’ found in common petitions, petitions from bishops reflected the supplicatory character of the clerical gravamina and presented requests for the exclusive interest of the church. As such, petitions from bishops, alongside the clerical gravamina, encapsulated a set of values, manifest through the use of language and rhetoric, which sought to assert the institutional independence of the church. Yet, despite being part of a supplicatory culture which sought to defend church autonomy and ecclesiastical jurisdictional integrity, the petitionary system in England sapped the supplicatory strength of the clergy and reduced their ability to defend their autonomy in the face of royal demands.

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11

Gaspar, Luis Miguel Guerreiro Galla. "The Crown Jewel gold skarn deposit." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Dissertations/Summer2005/l%5Fgaspar%5F072805.pdf.

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12

Brash, Benjamin. "Distortions of Press Quenched Crown Wheels." Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170022.

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Scania has experienced difficulties with large variations of the slope of the back plane after press quenching of case hardened crown wheels of especially type R780 Steg supplied from ingot cast material. This leads to that a large number of crown wheels has to be remeasured and sorted according to back slope which is time consuming for operators. Also, after sorting of the crown wheels, hard machining has to be adjusted according to the different slopes of the back plane of the crown wheels. In some cases, it also leads to scrapping of the crown wheels.This master’s thesis was divided in two parts. The aim of the first part was to confirm that the crown wheel type and casting technique that exhibits the largest variations in slope of the back plane is the R780 Steg originating from ingot cast material. The crown wheel types that were compared were the R780 Steg, R780 Slät and R885 Slät. Crown wheels manufactured from ingot cast material and from continuous cast material were compared. Hence, 6 combinations were examined. The slope of the back plane was measured with the measuring probe FARO after press quenching. The slope of the crown wheels was found to depend on both casting technique and the geometry of the crown wheel. The results confirmed that the crown wheel type and supplier combination that by far yields the largest variations in slope of the back plane is the R780 Steg supplied by Steel Plant A who uses the ingot casting technique. For this combination the variation exceeds 0,1 mm. All other combinations of crown wheels and suppliers yield acceptable variations.The second part of this master’s thesis was composed of determining if segregations in the cast ingot are the cause of the variations in slope of the back plane of the crown wheel type R780 Steg. This was done by measuring if there is a correlation between the slope of the back plane of the crown wheel after press quenching, the chemical composition and the original position of the crown wheel in the ingot. As in the first part of the study, the distortion was measured by the measuring probe FARO. The samples were sent to Degerfors Laboratorium for chemical analysis. Analyses of C, S and N were made by using combustion analyses. For As, P, B and Al optic spectrometry (spark) was used. All other elements were analysed by x-ray fluorescence. Segregations were found to be present and in combination with the geometry of R780 Steg to be the cause of the large variations in slope of the crown wheels.The results of this thesis show that, for the crown wheel type R780 Steg, Scania should not use suppliers that employ the ingot casting technique. Instead, only suppliers using the continuous casting technique should be used. However, for the other crown wheel types ingot or continuously cast material can be used.

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13

Collie, Luke E. "Lithium transport in crown ether polymers." Thesis, Durham University, 1995. http://etheses.dur.ac.uk/5196/.

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A series of 12-, 13-, and 14-membered crown ether rings bearing polymerisable side-chains has been synthesised. The crown ethers were attached to a methacrylate or acrylate polymerisable group either via a short link (Ring-CH(_2)-O-Polymer) or via a spacer group. Both hydrocarbon and ethylene oxide spacer groups were used, giving structures of the form (Ring-CH(_2)-O-(CH(_2))(_6)-O-Polymer) and (Ring-CH(_2)-O-((CH(_2)CH(_2))(_2)O)-Polymer). The ethylene oxide chain can potentially bind to a Li(^+) dopant ion. The relative Li(+) binding affinity of 12-, 13-, and 14-membered mono- and disubstituted crown ethers has been assessed by variable temperature (^13)c and (^7)Li NMR. The crown ether bearing monomers were polymerised using standard free-radical polymerisation methods to yield amorphous materials whose glass transition temperature (T(_g)) was controlled principally by the nature of the spacer group. On doping with lithium triflate (LiCF(_3)SO(_3)), the polymers exhibit high ionic conductivity. The conductivity was primarily dependent on polymer T(_g), but was also found to be higher for 12-crown-4 based systems than for 13-crown-4 and 14-crown-4 based analogues. This behaviour was consistent with the results of the NMR studies, which showed that Li(^+) exchange occurs more readily between 12-crown-4 rings than 13- or 14-crown-4 rings. The NMR studies also showed that 12-crown-4 systems have a higher tendency to form 2:1 (ring : Li(^+)) complexes. Within a polymer matrix, the presence of 2:1 complexes allows Li(^+) migration via an association-disassociation mechanism, avoiding the high energy intermediate state of a free or weakly bound Li(^+) ion. The greater encapsulation provided by 2:1 complexation may also aid in ion pair separation.

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Owens, K. A. "Polycyclic crown ethers incorporating cyclophane units." Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370864.

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15

Wilson, Mark James. "Activity relationships for aromatic crown ethers." Thesis, University of Strathclyde, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249872.

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16

Carbaugh, Eric Douglas. "A comparison of crown attributes for six genotypes on Pinus taeda as affected by site and management intensity." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/56963.

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This study was designed to investigate the development of the crown architecture of six genotypes of loblolly pine across a variety of growing conditions, and also to investigate the stability of the crown ideotype for these genotypes over a range of site and silvicultural management regimes. The objectives were to determine whether the crown dimensions that determine the crown ideotype of four clones, a mass-control-pollinated family, and an open-pollinated family of Pinus taeda L. are consistent within their respective genotypes, and to determine whether those same crown dimensions and genotypes follow consistent patterns even when established on different sites with contrasting qualities and different silvicultural regimes. The study was conducted on a 5-year-old plantation with an initial spacing of 1,235 trees per hectare. The plots had not reached crown closure, which provided the opportunity to assess the crown characteristics of individual trees of each genotype and how they developed over in a variety of growing conditions, without the interactions of other individuals. The study was a split-split plot design with the whole plot divided between two sites of contrasting quality; one site established in the Virginia Piedmont and a second site established in the North Carolina Coastal Plain. The sub plots were divided between high and low intensity silviculture. The sub-sub plots were divided among the six genotypes of loblolly pine. Seventeen tree and crown characteristics were measured, and means were compared using analysis of variance and Tukey's HSD test. We hypothesized that the branch and crown attributes would follow consistent patterns among these genotypes on the two sites and between the two silvicultural regimes. The results generally confirm these hypotheses. When the genotypes were compared, interactions only occurred with total branches, internode length, total foliage mass, and total leaf area. Tree height, diameter at breast height (dbh), stem volume, and crown volume averaged 4.8 m, 7.5 cm, 0.03 m3, and 7.1 m3, respectively at the site in Virginia, compared to values of 4.1 m, 6.2 cm, 0.02 m3, and 4.9 m3 at the site in North Carolina. Tree height, dbh, stem volume, branch diameter, branch length, and crown volume averaged 4.7 m, 7.5 cm, 0.03 m3, 1.3 cm, 90.3 cm, and 7.3 m3, respectively under high intensity silviculture compared to values of 4.3 m, 6.2 cm, 0.02 m3, 1.1 cm, 68.7 cm, and 4.7 m3 under low intensity silviculture. There were differences among the genotypes in branch diameter, branch length, and crown volume, with the branch diameter of clones 1 and 3 averaging 1.2 cm compared to an average of 1.3 cm for clones 2 and 4. Branch length for clone 1 averaged 72.4 cm and clone 3 averaged 77.0 cm, while branch length for clone 2 averaged 83.3 cm and clone 4 averaged 86.7 cm. Crown volume for clone 1 averaged 4.9 m3 and clone 3 averaged 6.3 m3, while clone 2 averaged 7.1 m3 and clone 4 averaged 7.2 m3. These differences conform to the crown ideotype for these clones, where clones 1 and 3 were considered narrow crowned and clones 2 and 4 were considered broad crowned. The branch diameter and branch length of the open pollinated family (OP) was similar in size to the broad crowned clones (1.3 cm and 84 cm, respectively), while the branch diameter and branch length of the mass control pollinated (MCP) family was smaller than the narrow crowned clones (1.1 cm and 71.2 cm, respectively). Crown volume for the OP family was intermediate between the clonal ideotypes, averaging 5.9 m3, while the MCP family had the smallest crown volume, averaging 4.7 m3. A single-degree-of-freedom ANOVA comparing the two clonal ideotypes yielded similar results. There were interactions with branch diameter, total branches, internode length, and total leaf area, but the broad crown ideotype was larger in every measured parameter than the narrow crown ideotype. The lack of interactions and the general conformity to crown ideotype in this study indicated stability among these genotypes across this variety of growing conditions.
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17

Rotman, Leonard Ian. "Duty, the honour of the Crown, and uberrima fides, fiduciary doctrine and the crown-native relationship in Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1993. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/MQ39228.pdf.

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18

Huang, Zilin. "Synthesis and Properties of Novel Cage-Annulated Crown Ethers." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc5523/.

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Three cage-functionalized polyoxacrown ethers (9, 10 and 12) and four novel cage-functionalized polyoxamonoazacrown ethers (18, 20, 25 and 29) that contain 3,5-disubstituted-4-oxahexacyclo[5.4.0.02,6.03,10.05,9.08,11]dodecane ("oxahexacyclic") moiety have been synthesized and their respective alkali metal picrate extraction profiles along with that of three analogues 13, 14 and 21 have been obtained. The observed avidities and selectivities of the host molecules toward complexation and transport of alkali metal picrates can be related to the size and shape of their respective macrocyclic cavity and the number of donor atoms. The effect of N-alkyl substitution on the complexation properties of azacrown ethers has been studied. The avidity of N-Et azacrown ethers toward complexation with alkali metal cations is generally higher than that of the corresponding non-N-alkylated hosts. However, the presence of an N-Et group appears to have a negligible effect upon their relative selectivities in their regards. The effect of pH on extraction process was studied; it was thereby determined that the alkali metal picrate extraction experiments are best performed at high pH (ca. 11-12).

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19

Agenter, Michael Kelly. "Influence of tooth crown size on malocclusion." View the abstract Download the full-text PDF version (on campus access only), 2008. http://etd.utmem.edu/ABSTRACTS/2008-001-Agenter-index.html.

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Thesis (M.S. )--University of Tennessee Health Science Center, 2008.
Title from title page screen (viewed on March 4, 2008 ). Research advisor: Edward Harris, Ph.D. Document formatted into pages (xvii, 192 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 155-166).

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20

Moreira, navarro Luis. "Supramolecular crown ether containing donor-acceptor ensembles." Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAF060.

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Afin d'obtenir une meilleure compréhension de l'étape clé du système photosynthétique (la formation d’un état à charges séparées), une nouvelle famille de systèmes donneur-accepteur supramoléculaires a été préparée.Nous avons notamment acquis une meilleure compréhension de la nature des interactions π-π entre le C60 et les porphyrines (résultant d'un processus régi principalement par des forces de van der Waals) et de l'affinité des éthers couronnes vis-à-vis des fullerènes (résultant d'une combinaison entre interactions π-π, n-π et CH-π). Les propriétés supramoléculaires des dimères de porphyrines ont été aussi explorées, prouvant leur communication électronique à travers leurs sous-unités. Finalement, la coopérativité chélate d'un de nos systèmes a été évaluée par la molarité efficace
In order to gain a better understanding of the key step of the photosynthetic system (formation of a charged separated stated), a series of new supramolecular crown ether containing donnor-aceptor ensembles have been obtained.Notably we have gained further insight in the nature of π-π stacking between C60 and porphyrins (arising from a process mainly governed by van der Waals forces) and the affinity of crown ethers towards fullerenes(arising from an interplay of π-π, n-π and CH-π interactions). The properties of porphyrin arrays have been explored, evidencing the electronic communication through subunits. Finally, the chelate cooperativity of one our systems has also been assessed through the effective molarity

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Rodenhouse, Randall Alan. "Liquid crystal polymers containing crown ether ligands." Case Western Reserve University School of Graduate Studies / OhioLINK, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1055364243.

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Mäsiarová, Jana. "Exchange Rate Modelling - Parities and Czech Crown." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-17469.

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The paper analyses validity of main exchange rate theories in case of the Czech crown. Investigated relationships comprise purchasing power parity, interest rate parity and real interest monetary model. Technical part of the analysis involves cointegration, namely Johansen's method based on vector autoregressive models. Two currency pairs are in the focus: CZK/EUR and CZK/USD. Empirical calculations did not prove the absolute validity of the theories but pointed out to other factors of exchange rate, such as convergence process, impacts on inflation targeting decisions, non-monetarist determinants and the recent financial crisis.

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Wang, Yingping. "Crown structure, radiation absorption, photosynthesis and transpiration." Thesis, University of Edinburgh, 1988. http://webex.lib.ed.ac.uk/homes/wang88.html.

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Kamel, M. A. M. "ETIOLOGY OF CROWN ROT OF ORGANIC BANANAS." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/342536.

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Crown rot is one of the most important postharvest diseases with a great negative impact on banana fruit quality. Bananas are harvested green and many packaging processes are carried out before coming on the market. The infections occur at harvest, but the symptoms appear after overseas transportation. Different pathogens are involved in crown rot, varying according to farming area. Little is known about its etiology and causal agents in organic farming. Dominican Republic is one of the leading exporters of organic bananas, and therefore, in this PhD thesis, five organic farms and their corresponding packing stations located in Valverde were investigated. To the best of our knowledge this is the first study covering Dominican Republic and it focused in particular on: the disease etiology, conditions, infection time and mechanisms that determine its development. Over a period of three years, 558 banana hands were collected and a total of 5000 fungal colonies were obtained from the crown tissues and 1750 representative colonies were purified. The identification of mycoflora associated with crown tissues was carried out with the final aim to search for disease management strategies compatible with organic production. Fungi were found in all the analyzed samples collected from various processing stages: from field to packing houses, and obtained in high rate starting from field from flowers as well as crown parts. The diffusion of the pathogen inoculum occurs principally during the banana processing, especially during the dehanding and in washing tanks. The final crown trimming followed by washing and quality of water used in the application of protective products were the critical points of crown infections. Five hundred and eighteen representative colonies were characterized and identified using morphological and molecular methods. The fungal community was dominated by Fusarium, the most frequent genus (55%) found in more than 80% of all analyzed samples. It was represented by nine species; F. incarnatum 53%, F. verticillioides 12%, F. sacchari 12%, F. proliferatum 7%, and F. solani 6%. Strains belonging to eight less frequent genera were represented by Colletotrichum musae 7% and found in 13% of all samples; Lasiodiplodia theobromae 4% and L. pseudotheobromae 1%, both found in 7% of all samples; Nigrospora sp. 11%, Alternaria spp. 6%, Phoma spp. 2%, Pestalotiopsis sp. 2%, Curvularia spp. 1% and Microdochium sp. 1%. Considering the main genera, the results based on morphological and molecular aspects showed a high variability among strains. By conducting the experimental inoculation trials, C. musae strains resulted from the most virulent among different species, followed by F. sacchari, L. theobromae, L. pseudotheobromae and F. verticillioides. The remaining strains had low pathogenicity, and their role could be ancillary in the crown rot development, or could be considered saprophytic. Summarizing the isolation frequency and pathogenicity tests, F. incarnatum strains played the main role in crown rot disease of organic bananas in the investigated areas.

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Denike, John Kane Carleton University Dissertation Chemistry. "The synthesis and complexation of bis-crown ethers and polymers bearing pendant crown ethers and the study of molecular motion of crown ethers in solids using solid state 2H NMR." Ottawa, 1992.

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Ji, Mingzhe. "Explorations with optically active, cage-annulated crown ethers." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4207/.

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A variety of optically active macrocyclic crown ethers that serve as "host" systems that are capable of differentiating between enantiomeric "guest" molecules during host-guest complexation have been prepared via incorporation of chiral elements into the crown ring skeleton. The ability of these crown ethers to recognize the enantiomers of guest salts, i.e., (+) a-methyl benzylamine and to transport them enantioselectively in W-tube transport experiments were studied. The ability of these crown ethers to perform as chiral catalysts in an enantioselective Michael addition was studied. The extent of asymmetric induction, expressed in terms of the enantiomeric excess (%ee), was monitored by measuring the optical rotation of the product and comparing to the literature value.

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Gair, George Frederick. "Managing change as a Minister of the Crown." AUT University, 2010. http://hdl.handle.net/10292/936.

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During my years as a Cabinet Minister in New Zealand, the relationship between a Minister and his key officials was strongly modelled on the Westminster system as then applied in Britain. As in Britain, the ministers were the product of the political and parliamentary processes. The leader of the political party with the majority in the House was called upon by the Queen's representative (our Governor General) to form the new Government. All Ministerial appointees were necessarily chosen entirely from members then in Parliament. As in Britain, also, the key officials to serve each Minister in their portfolios were provided by the career Public Service, the long-serving body of officials who were there to advise and manage the system for successive governments. The Minister did not choose his departmental head, nor did that departmental head choose his minister. There were many assumptions inherited from the past which helped to make the relationship work. Policy decisions were shaped by the Minister representing the political side of the equation. Execution and management was carried out by the head official, responsible for the operation of the bureaucratic machine he headed. In explaining my thesis message - "Managing Change as a Minister of the Crown" - a very strong autobiographical dimension to my experience and comments is inevitable. In the political setting, the relationship between Minister and Head of Department, though a key factor, is but one of many. All change affects many people - some positively and beneficially, and some the reverse. The effects of change can be anticipated rather than actually felt. Perceptions can sometimes become bigger problems to manage than realised consequences. Change in politics invariably reaches out far beyond those obviously and directly affected. Handling change therefore involves making plans for how one can best point the change in a forward-looking and constructive way, and put a socially positive spin on one's efforts and the outcome. If one's efforts are done openly, and one's arguments are well founded, real progress can be made. One of life's constants is change itself. It affects us all in some measure. In communities categorized as "developed", it can be particularly fast and sweeping. This means, inevitably, that the forms of its infrastructures - from public services to business enterprises - which enable society and the economy to function effectively must adapt, and constructively, to those changes. From my experience, in facing a variety of problems calling for change in handling portfolio responsibilities, I have found every case is different from the others, and each solution had to be shaped to meet the characteristics of that particular case. The only common denominator I would call the "people factor". Compounding the challenge, that "people factor" had to be fashioned as appropriate for the personalities with whom I was working, and the characteristics of the problem being addressed. I did, however, find that there were some common fundamentals in the "people factor" which I address in my conclusion. They helped facilitate co-operation in managing change.

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Pollock, Melissa. "Franco-Scottish politics : crown and nobility, 1160-1296." Thesis, University of St Andrews, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.654949.

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29

Amoozgar, Zohreh. "Synthesis and study of dibenzodihydroxy-26-crown-8." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1371681.

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The objective of this research was to synthesis dibenzo-dihydroxy-26-crown-8 (1) as an ionophore for variety of chemosensors. Complexation of the ionophore (1) to a cation would cause a change of conformation. The conformational changes could affect fluorescence, UV spectra and/or Carbon-13 NMR of the chemosensor, depending on the fluorophores attached to the hydroxyl groups of crown 1 and/ or the identity of the ion. Several synthetic routes for crown 1 formation are given in the proposed synthetic procedure. Bis-1,2[2-hydroxyethoxy]benzene (17), bis-1,2[2-(3-chloro-2-hydroxypropoxy)ethoxy]benzene (18), bis-1,2[2-(2,3-epoxypropoxy)ethoxy]benzene (19) and bis-1,2[2(3-chloro-2-oxopropoxy)ethoxy]benzene (22) were synthesized. The reaction of 17 and 19 was attempted in the presence of SnC14, basic and acidic conditions, and in several solvents. The reaction of 17 and 22, and the reaction of 17 and 1,3-dichloroacetone were attempted in various reaction conditions. Crown 1 may have formed in the reaction of 17 and 19 in methylene chloride/ toluene in the presence of SnCl4 as the Lewis acid.
Department of Chemistry

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30

Merithew, Andrew William. "Differential Self-Assembly of Novel Redox Crown Ethers." Thesis, University of California, Santa Barbara, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3645672.

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Retinal prosthesis relies on the stimulation of living nerve tissue behind the rods and cones of the eye. The current state of the art relies on electrodes controlled by cameras which directly stimulate the nerve tissue to elicit a response to an image. These types of retinal implants have allowed for short-term crude vision in patients but have had limited long term success due to external battery packs and electroplating of the implanted electrodes.

Ionic stimulation is one of the principle mechanisms that sensory neurons utilize in the generation of an action potential. In a complex transduction pathway, ionic gradients are constantly altered inside the neuron by voltage sensors or mechanically controlled gates embedded in the neuronal cell membrane; responsible for the open and close state of these ion channels.

It has been demonstrated that local concentration increases of K⁺ by direct injection proximal to the nerve can elicit nerve firing at a concentration of 15-20 mM (3-4X normal concentration) increase in K⁺ concentration. As part of a larger concept of integrating biotechnology with nanofabrication, the materials for the development of potassium selective sequestration/storage and delivery were developed in the form of a redox-gated K⁺ selective crown ether.

The structure of the anthraquinone-based crown was deduced by computational simulation and stoichiometry of the complex confirmed by mass spec. along with 2D diffusion NMR techniques. In this instance, the stoichiometry could be controlled by the addition of different salts to give a 1:1 complex with large, aromatic anions and a 2:1 complex with smaller anions such as triflate. The synthesis of the molecule was optimized by computational modeling and simulations of transport through an artificial membrane. The selectivity of the architecture developed was specific for K⁺ over Na+, the other major ionic species present in the blood. The mechanism influencing the self-assembly of this class of compounds has much to do with the breakage of intramolecular π-stacking interactions and the formation of stronger intermolecular π-stacking interactions.

Finally, the transport of K⁺ through nanoporous membranes and single nanopores with novel PEG-type polymeric dispersions is demonstrated. This thesis concludes with future work toward developing more advanced transporters and proposes novel uses for anthraquinone-appended polymers as proton exchange membranes and DNA-base pair interchelators.

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31

McKenna, Janice Elizabeth. "Wave forces on caissons and breakwater crown walls." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263464.

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32

Titterington, David. "Crown and community in Essex, c.1066-1189." Thesis, University of Kent, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311271.

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33

Lowe, Nigel D. "Transition metal complexes of crown ether benzo-dithiolenes." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306406.

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34

Fetherstonhaugh, Claire Christine. "Earls and the crown in England, 1360-1385." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648902.

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35

D'Souza, Lawrence Joseph. "Bile Acid Based Molecular Tweezers And Crown Ethers." Thesis, Indian Institute of Science, 1995. https://etd.iisc.ac.in/handle/2005/114.

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Chapter 1. Introduction to Molecular Tweezers Whitlock and Zimmerman developed a class of molecular hosts, popularly known as molecular tweezers, which sandwich aromatic guests by ii=ii interaction. Chapter 1 summarizes molecular tweezers of various kinds which have recently been synthesized. Chapter 2. Design and synthesis of "Bile Acid-Based Molecular Tweezers" Bile acids have a rigid backbone, and the array of hydroxyl groups separated by 5-7 A provides opportunities for the attachment of binding surfaces such as two extended chromophoric units.

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36

D'Souza, Lawrence Joseph. "Bile Acid Based Molecular Tweezers And Crown Ethers." Thesis, Indian Institute of Science, 1995. http://hdl.handle.net/2005/114.

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Chapter 1. Introduction to Molecular Tweezers Whitlock and Zimmerman developed a class of molecular hosts, popularly known as molecular tweezers, which sandwich aromatic guests by ii=ii interaction. Chapter 1 summarizes molecular tweezers of various kinds which have recently been synthesized. Chapter 2. Design and synthesis of "Bile Acid-Based Molecular Tweezers" Bile acids have a rigid backbone, and the array of hydroxyl groups separated by 5-7 A provides opportunities for the attachment of binding surfaces such as two extended chromophoric units.

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37

Huang, Zilin. "Synthesis and Complexation Studies of Novel Functionalized Crown Ethers and Azacrown Ethers." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5593/.

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Novel cage-functionalized azacrown ethers, i.e. 51, 52, 53, 55, 57, 61 and 62, which have various crown cavity and different number of nitrogen atoms incorporated, have been prepared. X-ray structures of 53, 55 and 57 have been obtained for the study of the crown topological structure. The complexation properties of crown 51, 52, 57, 61 and 62 have been evaluated via alkali metal picrate extraction, silver picrate extraction and ESI-MS study. The novel cage-fuctionalized azacrown ethers generally exhibit high avidity and selectivity towards Ag+ versus alkali metal ions and some transition metals i.e. Cu2+, Mn2+, Zn2+, Ni2+ and Pb2+. Crown 61 displays significant avidity and selectivity toward K+ in alkali metal picrate extraction experiments vis-à-vis the remaining alkali metal picrates. Three types of ditopic ion-exchange receptors for sodium hydroxide extraction study have been designed. All of the crown ether molecules have proper cavity for selective sodium complexation and have weakly acidic ionizable alcohols for sodium-proton exchange under strongly basic conditions. Crown 80 and 81 were synthesized; key intermediates for the synthesis of crown 82, 83 and 84 have been prepared. The preparation of 99 afforded an unexpected crown 103. The preparation of 109 had been attempted, but could not be successfully isolated. Four novel cage-functionalized calix[4]arene crown-5, i.e. 113-116, have been synthesized. The structures of 113 and 116 have been established by X-ray crystal structural analysis and NMR spectral analysis. The complexation properties of the four ionic receptors have been studied via alkali metal picrate extraction experiments. Crown 115 and 116 display more than modest avidity toward alkali metal ions and are most selective toward K+ vis-à-vis 113 and 114.

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38

Aranda, Huete Amelia Cruz Valdovinos José Manuel. "La joyería en la corte durante el reinado de Felipe V e Isabel de Farnesio." Madrid : Fundación Universitaria Española, 1999. http://catalog.hathitrust.org/api/volumes/oclc/43708934.html.

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39

Briere, Kathleen Marie. "The complexation of alkali metal cations by 15-crown-5 and benzo-15-crown-5 in nonaqueous solvents: A multinuclear NMR study." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5587.

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$\sp{23}$Na and $\sp7$Li NMR have proven to be very useful techniques for studying the extent of complexation reaction of lithium and sodium cations with 15-crown-5 (15C5) and benzo-15-crown-5 (B15C5) in nitromethane (NM), acetonitrile (AN), pyridine (PY) and dimethylformamide (DMF). Although the formation constants (K$\sb{\rm F1})$ of (Na:15C5)$\sp+,$ (Na:B15C5)$\sp+,$ (Li:15C5)$\sp+$ and (Li:B15C5)$\sp+$ in NM were too large to be accurately measured (log K$\sb{\rm F1}$ $>$ 4), that of (Na:B15C5)$\sp+$ in DMF and PY were determined from $\sp{23}$Na chemical shift and longitudinal relaxation rates: log K$\sb{\rm F1}$ = 2.9 $\pm$ 0.3 in PY and 1.2 $\pm$ 0.4 in DMF. A combined $\sp{23}$Na and $\sp7$Li NMR study for systems containing both lithium and sodium cations in the presence of B15C5 in NM revealed a selectivity for the complexation of lithium where the equilibrium constant, reflecting the ratio K$\sb{\rm FLi}$/K$\sb{\rm FNa},$ was determined: log K$\sb{\rm eq}$ = 1.9 $\pm$ 0.2. In the two-site chemical exchange of the alkali metal cations, two exchange mechanisms have accounted for the $\sp{23}$Na and $\sp7$Li dynamic NMR results: associative and dissociative exchange. The chemical exchange of sodium and lithium individually with B15C5, was shown, by $\sp{23}$Na and $\sp7$Li NMR respectively, to follow the associative pathway in NM whereas in AN the chemical exchange of sodium with B15C5 was shown to prefer the dissociative pathway. Kinetic studies of sodium-B15C5 in binary mixtures of AN-NM and DMF-NM have indicated that the change in observed mechanism is related to the solvent donicity where dissociative exchange is observed in high donicity solvents. An increase of the concentration of AN or DMF in the solvent mixture gives rise to an increase of the dissociative contribution to the exchange. The activation parameters of the dissociative exchange are highly solvent dependent indicating that the solvent, at the molecular level, must play an important role in this mechanism. However, the activation parameters for the associative exchange do not display such a dependence on the solvent; it was postulated that conformational rearrangements play the governing role in this mechanism. In studies with DMF-NM binary solvent mixtures, a model based on the direct participation of one DMF molecule in the coordination sphere of sodium in (Na:B15C5)$\sp+,$ has accounted for the observed $\sp{23}$Na chemical shift and longitudinal relaxation rate variations of (Na:B15C5)$\sp+$ as a function of the concentration of DMF in the solvent mixture. It was postulated that it is the formation of (Na:B15C5:DMF)$\sp+$ which is responsible for the observed increase of the rate of exchange as the concentration of DMF in the solvent increases. This direct participation of one solvent molecule in the dissociative exchange was qualitatively and quantitatively characterized. The application of 2-dimensional $\sp7$Li exchange NMR spectroscopy (EXSY), for the kinetic investigations of the exchange of the lithium cation in its solvated (NM) and complexed (B15C5) sites, is illustrated. Results obtained by this method are in agreement with the conventional 1D lineshape results. (Abstract shortened by UMI.)

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40

Delhey, Kaspar. "Sexual selection and blue tit (Parus caeruleus) crown coloration." [S.l.] : [s.n.], 2005. http://edoc.ub.uni-muenchen.de/archive/00004716.

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41

Delhey, J. Kaspar V. "Sexual selection and blue tit (Parus caeruleus) crown coloration." Diss., Connect to this title online, 2005. http://edoc.ub.uni-muenchen.de/archive/00004716/.

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42

Stewart, Gayle Lorraine. "Repositioning BC ferries : from Crown corporation to administrative hybrid." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2646.

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In this paper. I analyze how political, economic, and administrative issues were major factors in the BC Liberal government's creation of a complex hybrid operating structure for BC Ferries. The model evolved as the result of a number of circumstances, including the former NDP government's "fast ferry" debacle and the Liberal government's decision to conduct a Core Services Review of all government services, including those provided by Crown corporations. BC Ferries' new structure has similarities to other administrative models that have been introduced as a result of New Public Management initiatives and other factors in a number of Westminster jurisdictions. The resulting operating entities are having significant impacts on the nature and scope of public accountabilities and on reporting structures.

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43

Nagapudi, Karthik. "Structure, morphology and dynamics of crown ether-based polyrotaxanes." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/8639.

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44

Petersson, Fredrik. "Investigation of crown ether cation systems using electrophoretic NMR." Thesis, KTH, Skolan för kemivetenskap (CHE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156315.

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The purpose of this thesis was to investigate how crown ethers behave and interact with different cations and to optimise the setup of the electrophoretic NMR. To get a good electrophoretic NMR measurement the electrophoretic phase shift needs to be big. To increase the phase shift some parameters needed to be adjusted, parameters such as the concentration of crown ether and cation, the duration of magnetic field gradient pulse δ, the magnetic field gradient strength g, the diffusion time Δ and the applied voltage V. The main focus then put on crown ethers 15-crown-5 and 18-crown-6. The cations used were lithium (Li), sodium (Na), potassium (K), caesium (Cs), calcium (Ca) and barium (Ba). The effective charge was obtained by using pulsed gradient NMR to derive the diffusion coefficient and electrophoretic NMR to get the electrophoretic mobility. These data were used to calculate the equilibrium constant of the formed complex. The outcome of the investigation: the affinity for 18-crown-6 was in the following order barium > potassium > caesium > sodium > calcium > lithium and for 15-crown-5 barium > sodium > calcium > caesium > potassium > lithium.

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45

Daly, Gerry. "Crown, empire and Home Rule : the Irish in Portsmouth." Thesis, University of Portsmouth, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439186.

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46

McClean, G. O. "Fluorescent sensors based on benzo-15-crown-5 ethers." Thesis, Queen's University Belfast, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403172.

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Moody, T. S. "Switches based on crown ethers, cyclophanes and amino acids." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390876.

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48

Omar, Ibrahim. "Biological control of crown and root rot of tomato." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310952.

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49

Mousley, David P. "The application of bis(benzo)-crown ethers as multireceptors." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295075.

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50

Backhouse, David John. "The crown, the peerage and high politics 1689-1760." Thesis, Queen Mary, University of London, 1990. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1387.

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It is the contention of this thesis that the crown went through some rather marked change during the course of the period, starting with the Bill of Rights and effectively ending with the Act of Settlement in 1701. In 1689 the crown had an extensive prerogative and a limited executive, in 1702 it had a more limited prerogative (although it did come into operation until after Annets 1714 death) and an extensive executive. Thereafter, there was no deterioration in the crown's position during the subsequent decades to the period's end. The importance of the crown has been underestimated because of the limited amount of direct research on it as a political entity. This thesis makes advances in terms of both factual knowledge and historiography. Its body falls into two principal parts. The first of these are three structural analyses of crown patronage in relation to the peeragetitles, central office and local office. The second is a broad political narrative. The analyses show that the crown was a very definite presence in high politics. Over the period as a whole the crown defined the limitations that its political managers had to operate within these. As the period progressed crown prejudices, especially with relation to the peerage, grew more marked rather than declining in the Revolution Settlement's wake as has been the general interpretation previouslY. In the narrative. the reigns of William III, Anne and George I are principally innovative in terms of historiography. For George II's reign there is such advance but also a far higher share of new material, the latter part of the period having had far less research on it than the former one. A notable example of this is the patterns of occurrence and general character of Post-1727 tory tergiversation.

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Dissertations / Theses on the topic 'Crown'

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