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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.
31

Two dimensional atomically thin materials and hybrid superconducting devices

Hudson, David Christopher January 2014 (has links)
In this thesis a variety of topics concerning 2D materials that have been separated from bulk layered crystals are discussed. Throughout the thesis, single and few layers of graphene, fluorinated graphene, MoS2 and WS2 are used. Two new methods of freely suspending 2D materials are presented as well as a method of removing the background from optical images. This aids contrast measurements for the determination of the number of layers. Fluorinated graphene is found to be sensitive to beta radiation; the resistance of fluorinated graphene transistors is shown to decrease upon exposure to the radiation. This happens due to the carbon-fluorine bond breaking. The sp3 hybridised structure of the fluorinated graphene is reduced back into the sp2 hybridised structure of pristine graphene. The superconducting properties of molybdenum-rhenium are characterised. It is shown to have a transition temperature of 7.5 K. It is also discovered that the material has a resistance to hydrofluoric acid; the acid etches nearly all other superconducting materials. This makes MoRe a possible candidate to explore superconductivity in conjunction with high mobility suspended graphene. To see if the material is compatible with graphene, a supported Josephson junction is fabricated. A proximity induced super current is sustained through the junction up to biases of ∼ 200 nA. The temperature dependence of the conductivity is measured for both suspended MoS2 and WS2 on a hexagonal boron nitride substrate. The dominant hopping mechanism that contributes to the conductivity at low temperatures is found to be Mott variable range hopping, with the characteristic T−1/3 dependence. The hopping transport is due to impurities that are intrinsic to the crystals, this is confirmed by comparing the results with those of supported devices on SiO2.
32

Caliban's robes transformative domestic spaces within early modern utopias /

Rose, McKenna Suzanne. January 2006 (has links)
Thesis (M.A.)--University of Nevada, Reno, 2006. / "May, 2006." Includes bibliographical references (leaves 53-55). Online version available on the World Wide Web.
33

Hannah More and Cheap Repository Tracts; Lessons in "Religious and Useful Knowledge"

Paprocki, Laura Kelly 30 August 2010 (has links)
My thesis will discuss British Romantic period author and philanthropist Hannah More. I aim to portray her from a perspective that demonstrates her compelling and varying nature, that includes religion and rhetoric as persuasive tools met at times with resistance and at other times compliance. Her work called for educational reform on two accounts: firstly, for a system of education for the poor, and secondly, to reeducate middle and upper class women’s philanthropy. I focus on her didactic literature, namely Cheap Repository Tracts, and the prevalence of her Evangelical zeal embedded in the tracts. I draw particular attention to the stories of The Shepherd of Salisbury Plain, Black Giles the Poacher, and Betty Brown, the St. Giles’s Orange Girl. I argue that traditional understandings of didactic narratives as a low form of literature are misleading and that More’s work exemplifies didactic fiction as a form of literature capable of empowering readers and authors alike. Furthermore, I study the social function aspects of Cheap Repository Tracts as they demonstrated a newfound accessibility to a large and varying audience.
34

Gabb's California cretaceous and tertiary type lamellibranchs ...

Stewart, Ralph Bentley, January 1927 (has links)
Thesis (Ph. D.)--Johns Hopkins University. / Original typewritten copy. Vita. Published also as Special publication no. 3, The Academy of natural sciences of Philadelphia. eContent provider-neutral record in process. Description based on print version record.
35

The noun phrase in early sixteenth-century English a study based on Sir Thomas More's writings /

Raumolin-Brunberg, Helena. January 1991 (has links)
Thesis (Ph. D.)--University of Helsinki, 1991. / Includes bibliographical references (p. 283-296).
36

Forg[ing] chains for others : Hannah More's poetics and rhetoric of control

Thaler, Joanna Leigh 27 November 2012 (has links)
While scholars have carefully and rightly noted the profound influence that More’s abolitionist writings had on both the abolition movement and the developing women’s rights movement, they omit what is an essential examination of her poetics, particularly the self-conscious poetic form that she develops in her poem, “Slavery, A Poem” (1788). In conjunction with noting the rhetorical and textual devices that More implements in “Slavery” to illustrate the art of self-conscious poetics, this paper explores these same devices in a later satirical essay of More’s entitled Hints towards forming a Bill for the Abolition of the White Female Slave Trade, in the Cities of London and Westminster (1804), arguing that, by comparing the rhetorical points of overlap in these two pieces, we can identify that More’s contribution to her contemporary literary culture transcended mere female participation and publication. More importantly, through “Slavery” and Hints, More develops a unique rhetoric – a poetics of control – with which to discuss the physical constraints of slavery, the trope of the individual versus the collective, and the essential poetic and rhetorical practice of blending authorial creativity with conventional constraint. / text
37

Hannah More and Cheap Repository Tracts; Lessons in "Religious and Useful Knowledge"

Paprocki, Laura Kelly 30 August 2010 (has links)
My thesis will discuss British Romantic period author and philanthropist Hannah More. I aim to portray her from a perspective that demonstrates her compelling and varying nature, that includes religion and rhetoric as persuasive tools met at times with resistance and at other times compliance. Her work called for educational reform on two accounts: firstly, for a system of education for the poor, and secondly, to reeducate middle and upper class women’s philanthropy. I focus on her didactic literature, namely Cheap Repository Tracts, and the prevalence of her Evangelical zeal embedded in the tracts. I draw particular attention to the stories of The Shepherd of Salisbury Plain, Black Giles the Poacher, and Betty Brown, the St. Giles’s Orange Girl. I argue that traditional understandings of didactic narratives as a low form of literature are misleading and that More’s work exemplifies didactic fiction as a form of literature capable of empowering readers and authors alike. Furthermore, I study the social function aspects of Cheap Repository Tracts as they demonstrated a newfound accessibility to a large and varying audience.
38

Development of a tool to analyse helicopter performance incorporating novel systems

Porras Perucho, Henry Andres 09 1900 (has links)
The aerospace industry has always been looking forward new developments with the aim to create more environmental friendly aircraft, as well as to improve their performance. Over the last few years, a prominent research topic to achieve these challenging goals has been focussed on the incorporation of more electric Secondary Power Systems (SPS), this concept is known as More Electric Aircraft (MEA) or All Electric Aircraft (AEA) when the internal combustion engine is also replaced. Among others, Airbus is using Electro-hydrostatic Actuators, (EHAs) to combine hydraulic and electric power in A320 and A340 for flight tests since 1993. The company TTTECH applied the same concept by working on the development of an electrical steering system for an aircraft nose landing gear, and power source rationalization and electrical power flexibility in aircraft. Some of the advantages stated when the MEA concept is applied are: reduction in aircraft weight and performance penalties related to conventional SPS. Although the More/All electric aircraft concept provided satisfactory results for fixed-wing aircraft, research for rotary-wing aircraft is less common. This encourages the assessment of fuel consumption and performance penalties due to conventional and more electric SPS at conceptual level, which could achieve similar outcomes, while finding the best configuration possible. This project takes into account the previous research focused on fixed-wing aircraft and studies on new technologies for SPS within Cranfield University, this includes electrical Ice Protection System (IPS), Environmental Control System (ECS) and Actuation System (AS). Additionally, Fuel System (FS) and Electrical System (ES) capabilities were added, developing a generic tool able to predict the total power requirements depending on the flight conditions. This generic tool was then integrated with a performance model, where overall fuel consumption is calculated for a flight mission, giving continuity and improvement to the work already done. Secondary systems configuration and operating characteristics for a representative light single-engine rotary-wing aircraft were tailored, and the systems behaviour is presented. Finally, fuel consumption was calculated for a baseline mission profile, and compared to the fuel consumption when the systems are not included. The baseline mission set the initial flight conditions from which a parametric study was carried out; by varying these conditions the parametric study determined total fuel requirements for the analysed flight segments. An increment of up to %1.9 in the fuel consumption was found by integrating the proposed systems to the performance model, showing the impact produced by the systems, and the importance of studying different technologies to minimise it.
39

The noun phrase in early sixteenth-century English a study based on Sir Thomas More's writings /

Raumolin-Brunberg, Helena. January 1991 (has links)
Thesis (Ph. D.)--University of Helsinki, 1991. / Includes bibliographical references (p. 283-296).
40

Humanistische Bibelphilologie als Reformproblem bei Erasmus von Rotterdam, Thomas More, und William Tyndale

Holeczek, Heinz. January 1975 (has links)
Thesis--Freiburg, 1970. / Includes indexes. Includes bibliographical references (p. [399]-408).

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