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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

Toxicokinetics of inhaled trimethylbenzenes in man /

Järnberg, Jill, January 1900 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Univ. / Härtill 6 uppsatser.
32

Natural Organic Matter Interactions with CU(II) in groundwater.

Odem, Wilbert Irwin Jr., January 1991 (has links) (PDF)
Thesis (Ph. D. - Civil Engineering and Engineering Mechanics)--University of Arizona, 1991. / Includes bibliographical references (leaves 209-221).
33

The partitioning and removal of organic halide across an aerated stabilization basin (ASB) treating kraft mill wastewater.

Kostiuk, Elizabeth Ann, January 1990 (has links) (PDF)
Thesis (M. S. - Civil Engineering and Engineering Mechanics)--University of Arizona, 1990. / Includes bibliographical references (leaves 128-130).
34

Use of yeast species as the biocomponent for priority environmental contaminants biosensor devices thesis submitted to Auckland University of Technology in fulfilment of the degree of Doctor of Philosophy (PhD), 2008.

Gurazada, Saroja. January 2008 (has links)
Thesis (PhD) -- AUT University, 2008. / Primary supervisor: Dr. John Robertson. Includes bibliographical references. Also held in print (xx, 240 leaves : col. ill. ; 30 cm.) in the Archive at the City Campus (T 681.2 GUR)
35

Investigation of atmospheric dispersion in an urban environment using SF₆ tracer and numerical methods

Flaherty, Julia Emily, January 2005 (has links) (PDF)
Thesis (M.S. in environmental engineering)--Washington State University. / Includes bibliographical references.
36

Environmental impacts and management of persistent organic pollutants in South China

Lau, Hoi-yin, Melody. January 2009 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2009. / Includes bibliographical references (p. 49-71).
37

Bioavailability of endocrine disrupting chemicals (EDCs) liposome-water partitioning and lipid membrane permeation /

Kwon, Jung-Hwan, January 1900 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.
38

Development of polyaniline nanotube electrocatalysts and sesor devices for phenolic-pollutants

Klink, Michael John January 2007 (has links)
Philosophiae Doctor - PhD / As a source of life, water is one of the most precious commodities for all living organisms. Water resources are reported to be declining in numbers or the amount of water present and the existing onses are being polluted as a result of negligent human activities and intense industrialisation. thus, there is an ever increasing demand to monitor the quality of portable and waste water in our surroundings in real time. This study has been directed towards the prepaparation of polyanilines. / South Africa
39

Airborne concentrations of formaldehyde in a pathology unit

Ntsuba, Hlosi Samuel 19 January 2012 (has links)
Background This descriptive cross-sectional study aimed to assess the exposure to formaldehyde associated with the tasks in a pathology laboratory unit. The study objectives were to describe the tasks involving the use of formaldehyde in the unit and assess exposure to formaldehyde as well as assess the effectiveness of existing engineering/ventilation system control methods. Methods The study involved observation and description of all tasks carried out in the laboratory, assessing exposure to formaldehyde and physical measurements of laboratory parameters such as area and volume. Exposure assessment involved three levels: task-based exposure assessment; personal exposure assessment and area exposure assessment. Formaldehyde measurements, by means of shadow sampling (personal breathing zone sampling by another person shadowing person being sampled) were taken using the formaldehyde meter. Data were summarised using means, medians and proportions and results were presented in figures and tables. For significance testing, an analysis of variance was carried out on the log-transformed data and p-value less than 0.05 were interpreted as statistically significant. Results Not all tasks in the laboratory were done according to the standard operating procedures. In general, exposure to formaldehyde was highest among the assistants group who were mostly responsible for high-exposure tasks. Mean STEL values for assistants, technologists and pathologist were 2.37ppm, 1.21ppm and 1.59ppm respectively, while for TWA, the figures were 0.60ppm, 0.36ppm and 0.21ppm. For short term exposures (STEL and peak values) pathologist exposure levels were higher than those of technologists while technologists were higher for long term exposures (daily exposure and 8-hour TWA). Daily exposure varied significantly for assistants and technologists but not for pathologist. Despite the use of engineering exposure controls for formaldehyde, 27/28 of all tasks were higher than the ACGIH threshold ceiling limit of 0.3ppm, 0.008ppm MRL value and 0.002ppm RELTWAConclusion The results have shown exposures among the employees of all job categories in this study, with laboratory assistants being the most exposed. Currently installed local ventilation system requires to be upgraded in accordance with best practices of 3.5m/s for air speed. Training, on PPE usage together with the medical surveillance should also be implemented. value.
40

Assessment of persistent toxic substances in China and Hong Kong with emphasis on uncontrolled recycling of e-waste

Leung, Oi Wah, Anna. January 2006 (has links)
Thesis (Ph.D.)--Hong Kong Baptist University, 2006. / Adviser: Ming Hung Wong. Includes bibliographical references.

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