Determination of chromium in titanium dioxide pigments by atomic spectrometry

Imperial Users onl

Release of metals from plant surfaces

Imperial Users onl

The design and use of a digital radio telemetry system for measuring internal combustion engine piston parameters.

During the course of this project, a digital radio telemetry system has been designed and shown to be capable of measuring parameters from the piston of an internal combustion engine, under load. The impetus for the work stems from the need to sample the appropriate data required for oil degradation analysis and the unavailability of system to perform such sampling. The prototype system was designed for installation within a small Norton Villiers C-30 industrial engine. This choice of engine presented significant design challenges due to the small size of the engine (components and construction) and the crankcase environment. These challenges were manifest in the choice of carrier frequency, antenna size and location, modulation scheme, data encoding scheme, signal attenuation, error checking and correction, choice of components, manufacturing techniques and physical mounting to reciprocating parts. In order to overcome these challenges detailed analysis of the radio frequency spectrum was undertaken in order to minimise attenuation from mechanisms such as, absorption, reflection, motion, spatial arrangement and noise. Another aspect of the project concerned the development of a flexible modus operandi in order to facilitate a number of sampling regimes. In order to achieve such flexibility a two-way communication protocol was implemented enabling the sampling system to be programmed into a particular mode of operation, while in use. Additionally the system was designed to accommodate the range of signals output from most transducer devices. The sampling capabilities of the prototype system were extended by enabling the system to support multiple transducers providing a mixture of output signals; for example both analogue and digital signals have been sampled. Additionally, a facility to sample data in response to triggering stimuli has been tested; specifically a sampling trigger may be derived from the motion of the piston via an accelerometer. Ancillary components, such as interface hardware and software, have been developed which are suitable for the recording of data accessed by the system. This work has demonstrated that multi-transducer, mixed signal monitoring of piston parameters, (such as temperature, acceleration etc.) using a two-way, programmable, digital radio frequency telemetry system is not only possible but provides a means for more advanced instrumentation

Gone with the shining things

Includes bibliographical references.The lure of gold in the great reefs of Johannesburg near the end of the 19th century not only attracted the famous mining barons such as Cecil John Rhodes, Alfred Beit and Barney Barnato: working men also came from far and wide to feed their families with their labour. Among them was my great-grandfather, the miner from the Isle of Man, William Cogeen. He arrived via the tin mines of Cornwall and the silver mines of Colorado, and was among those Uitlanders who flocked in those early days to the Transvaal as skilled artisans - wheelwrights, farriers, bricklayers and, especially, experienced hard-rock miners. It was their labour, as well as of black tribesmen from all over southern Africa, that laid the financial foundation for what became the rich city of Johannesburg. It was also their influx that was the excuse that precipitated the Anglo-Boer War. His wife and daughters joined him in what was still a rough boom town, and they stayed on, until forced to flee as refugees from Johannesburg at the start of the war in 1899. Intrigued by the stories my mother and grandmother told me as a child, I began to research my family’s history and travelled to the Isle of Man, Cornwall and Colorado to trace their origins - and my own. This is the remarkable story of what happened to an ordinary working-class family who lived in extraordinary times, and my journey in their footsteps

BREASTS BIOMECHANICS; FROM RESEARCH TO ENTERPRISE TO INDUSTRY TO CONSUMER

The purpose of this initiative was to use published breast biomechanics methods to develop a bra testing service which steamlined funder engagement, generated income and research data. Following the set up of the Bra Testing Unit (2014), testing packages were sold which establish sports bra performance. To do this, appropriately sized volunteers (n=3,612) were recruited to run bare-breasted and in various sports bras (n=301). Breast movement reduction (% support) and subjective measures, were collected and sports bra support compared across all bras tested. This initiative has streamlined engagement, generated income through 48 package sales to 25 companies worldwide (start-ups to global brands) and is self-sustaining, supporting a biomechanics researcher and offering student opportunities. The data have informed publications; supporting impact case studies. This initiative commercialises, industrialises and consumerises biomechanics research

Steven Blockmans and Sophia Russack (eds.): Representative Democracy in the EU: Recovering Legitimacy.

Representative democracy is beset by a crisis of legitimacy across the world, but in Europe this crisis is compounded by the inadequacy of national governments to address citizens’ frustrations and to achieve transnational unity on common issues. How representative are national parliaments in their decision-making on EU matters? This volume investigates the relationship between the democratic institutions of the member states and those of the EU. With a focus on polity rather than policy, it looks at voting and decision-shaping mechanisms in selected member states, in particular the ‘Europeanisation’ of representative democracy at national level. It also assesses the state of parliamentary democracy at the EU level. Expert analysts share their insights into the changing nature of our political eco-systems and the (dis)connections within and between them

Aspects of female criminality in Wales, c.1730-1830: evidence from the Court of Great Session

This thesis draws on the extensive, underexplored records of the Court of Great Sessions for the period 1730-1830 to examine the nature and extent of Welsh women’s involvement in a range of serious crimes. Using both qualitative and quantitative methods, it provides an in-depth analysis of the characteristics of women indicted for various criminal activities, including crimes against the person and against the public peace, and offers explanations for their involvement, as far as the records allow. Information regarding the age, social position, and marital status of the female defendants has been compiled and analysed, and the extent to which these factors affected judicial outcomes is demonstrated. The broad geographical and chronological scope of this study also provides an insight into links between levels and types of crime involving women and their location, as well as changes over time. It is argued that there were distinctly gendered elements in the offences committed by women, the motivations attributed to them, and their treatment by the courts. There is no comparable study of female crime in the period encompassed by this thesis. Many historians of crime have wrongly assumed that experiences in Wales and England were the same, and both countries have often been analysed interchangeably. Welsh criminals, women included, have rarely been considered in their own right. Studies of crime in ‘England and Wales’ have too often failed to fully appreciate the distinctiveness of Wales. This thesis addresses these shortcomings, demonstrating that Welsh experiences of crime were unique in many respects. In so doing, it provides an unparalleled contribution to our understanding of female crime and gender relations in Wales during the long eighteenth century

Evaluating LANDSAT-4 MSS and TM data

Interband line pixel misregistrations were determined for the four MSS bands of the Mistassini, Ontario scene and multitemporal registration of LANDSAT-4 products were tested for two different geocoded scenes. Line and pixel misregistrations are tabulated as determined by the manual ground control points and the digital band to band correlation techniques. A method was developed for determining the spectral information content of TM images for forestry applications