Thesis. 1975. M.S.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences. / Bibliography: leaves 36-37. / M.S.

<p> Turbidity over Hamilton is determined using direct beam radiation in two manners for the summer period of 1975. These turbidities are then studies with respect to local regional and continental synoptic air masses.</p> <p> The results of the study show a high correlation between the actinometric and residual methods of determining direct beam radiation. This allows turbidity to be easily evaluated at radiation measurement sites.</p> <p> The most significant influence on the amount of particulate matter over Hamilton is the continental scale synoptic patterns.</p. / Thesis / Bachelor of Science (BSc)

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FKBP-65 is a member of the immunophilin class of proteins consisting primarily of the cyclophilins and the FKBP's which bind the immunosuppressant drugs cyclosporin A and FK506, respectively. Immunophilins possess peptidylprolyl cis-trans isomerase (PPiase) activity which is inhibited upon binding of their respective macrolides. Specific cellular targets of most immunophilins and the role of PPiase activity in vivo remain largely unknown. FKBP-65 has been proposed as a molecular chaperone of tropoelastin (TE), the soluble precursor of elastin (Davis et al. 1998). TE contains 12% proline residues, many of which are found in VPGVG repeats. When P2 is in the trans conformation, these motifs form repeated type-II ~-turns and ~-spirals resulting in selfassociation of TE via an inverse temperature-dependent transition known as coacervation. Coacervation can be monitored by turbidity increases at 300 nm. We have used purified recombinant FKBP-65 in coacervation assays with chick aorta TE to show that FKBP65 specifically affects the coacervation characteristics of TE in a concentration-dependant manner. The overall extent of coacervation of TE could be increased by more than 2-fold over controls by inclusion of nM amounts of FKBP-65 in the assay. Also, FKBP-65 decreases the coacervation onset temperature of TE by 5-l 0°C. Structural evidence suggests that the influence of FKBP65 on tropoelastin coacervation may be due to its ability to increase the ~ structural content of tropoelastin. These results suggest that FKBP-65 may be a physiologically relevant, TE-specific molecular chaperone. / Thesis / Master of Science (MSc)

Globally, water turbidity remains a crucial parameter in determining water quality. South Africa is largely regarded as arid and is often characterised by limited but high intensity rainfall. This characteristic renders most of the country’s water bodies turbid. Consequently, the use of turbidity as a measure of water quality is of great relevance in a South African context. Generally, turbidity alters biological and ecological characteristics of water bodies by inducing changes in among others temperature, oxygen levels and light penetration. These changes may affect aquatic life, ecosystem functioning and available water for industrial and domestic use. Siltation, a direct function of turbidity also impacts on the physical storage of dams and shortens their useful life. To date, determination of water turbidity relies on the tradition laboratory based methods that are often time consuming, expensive and labour intensive. This has increased the need for more cost effective means of determining water turbidity. In the recent past, the use of remote sensing techniques has emerged as a viable option in water quality assessment. Hyperspectral remote sensing characterizes numerous contiguous narrow bands that have great potential in water turbidity measurement. This study explored the applicability of hyperspectral data in water turbidity detection. It explored the visible and near-infrared region to select the optimal bands and indices for turbidity measurement. Using the Analytical Spectral Device (ASD) field spectroradiometer and a 2100Q portable turbidimeter, spectral reflectance and laboratory based turbidity measurements were taken from prepared turbid solutions of predetermined concentrations (i.e. 10g/l to 150g/l), respectively. The Pearson’s coefficient of correlation and R2 values were employed to select optimal spectral bands and indices. The findings showed a positive linear relationship between reflectance, the amount of soil in water and turbidity values. The strongest relationships came from bands 528, 489, 657, 1000 and 983, reporting adjusted R2 values of 0.7062, 0.7004, 0.6864, 0.7120 and 0.6961, respectively. The highest coefficient came from band 1000nm. The strongest indices were 625/440 and (770-1000)/(770+1000), with adjusted R2 values of 0.6822 and 0.6973 respectively. The use of hyperspectral data in turbidity detection is ideal for optimal band interrogation. Although good results were generated from this study, further investigations are needed in the near-infrared region. / Thesis (M.Env.Dev.)-University of KwaZulu-Natal, Pietermaritzburg, 2013.

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The aim of this thesis is to summarize the available knowledge on the occurrence and formation of turbidity in the water supply system and the design and application of methodology for measuring the potential occurrence of turbidity in the water supply. Problems of the current state of the quality of drinking water in public water supply systems, with a focus on the occurrence of cataract formation turbidity legislative change indicators of drinking water in the Czech Republic and abroad, and potential methods of measuring turbidity is discribed in the first part of the thesis. In the second part of the paper is a methodology for measuring the potential of turbidity in the water supply network. The methodology is applied in the case study Hrbová pressure zone, which is part of the distribution network of city Vsetin. The case study of the thesis is a statistical analysis and mathematical model of consumption of pressure zone Hrbová.

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Thesis (M.S.)--Missouri State University, 2008. / "May 2008." Includes bibliographical references (leaves 81-83). Also available online.

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