The aim of the thesis is to improve the strategy for exploration of life on Mars and potentially other planetary bodies. This was achieved through the analysis of terrestrial analogues, particularly for targets on the surface of Mars. The search for evidence of life requires optimising several aspects including choice of samples, sample preparation and sample analysis. Analogues selected include snow/ice, evaporites and weathered volcanics. The determination of optimal parameters for extraction of biomarkers was performed on carbon-rich and carbon-poor samples using powdered limestone-shale pairs and on weathered basalt. For all samples, extraction efficiency increased (i) up to about 35°C then did not increase further with temperature; (ii) with smaller grain size; (iii) up to 24 hours extraction time then did not increase further. These data indicate that extraction protocols could be optimised in advance. Dry core drilling experiments showed that the resultant powder obscured visual observation, the range of particle sizes did not allow for the most efficient extraction of organics, and the core powder contained less biomarkers than the core as a result of heating. Extracts of melted Cairngorm snow/ice contained a range of n-alkanols up C18 and extracts of particulate matter contained n-alkanols up to C29. High molecular weight biomarkers are poorly soluble in water, emphasising the importance of optimising the extraction protocol. Samples of snow containing snow algae were successfully analysed for biological pigments using Surface Enhanced Raman Spectroscopy. The development of a bioluminescence assay for the detection of ATP was undertaken in the Cairngorm mountains during a summer and winter season. The detection of ATP was optimised by filtration. An assessment of the potential for site selection, on basalt, from visual parameters, proved that fracture density had the clearest correlation to ATP levels determined by bio-assay. Areas of high fracture density can be detected from Mars orbit, therefore such data could be used to highlight areas most likely to harbour microbes on Mars. The research has shown that terrestrial analogues can yield valuable information on how to optimise different stages of the analysis of a range of rock types that may be expected on Mars.

No description available.

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 1998. / Includes bibliographical references.

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 2002. / Includes bibliographical references.

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 2000. / Includes bibliographical references.

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 2001. / Includes bibliographical references.

A study was undertaken in the Shipping Center of Rohm and Haas Chemical Company in Philadelphia, Pennsylvania to determine what course of action should be taken to reduce overall costs in a labor oriented shipment preparation operation. This activity, which currently utilizes a complement of twenty-seven people, involves the preshipment labelling and stenciling of product and customer information to metal drums and pails plus various other preparation requirements. A work sampling was performed to determine manpower requirements by work category and this information was used to direct the methods improvements study into the most lucrative areas. By transferring the responsibility of label and stencil preparation from the Shipment Preparers, who work on the Shipping platforms, to Shipping Office personnel, and by changing stencil cutting and label storage methods, a net reduction of five people is projected.

Typescript, etc. / Digitized by Kansas Correctional Industries

No description available.

Published Article / This paper focuses on the implementation of a labour performance measuring system at a confectionery company. The computer vision based system is based on the work sampling methodology. It consists of four cameras linked to a central computer via USB extenders. The computer uses a random function in C++ in order to determine when measurements are to be taken. OpenCV is used to track the movement of a target worker's dominant hand at a given work station. Tracking is accomplished through the use of a bandwidth colour filter. The speed of the worker's hand is used to identify whether the worker is busy, idle or out of the frame over the course of the sampling period. Data collected by the system is written into a number of text files. The stored data is then exported to a Microsoft Excel 2007 spread sheet where it is analysed and a report on the labour utilisation is generated.