Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 23 for “"Exposure studies"”.
-
Studies of urban air quality using electrochemical based sensor instruments
… air quality assessment as well as for personal exposure studies. Three principal pollutants CO, NO and NO2 are simultaneously measured in each unit of the AQ instrument including temperature / RH measurements as well as GPS (for time and position) and GPRS for data transmission. Laboratory …
-
STUDYING THE INTERACTION OF NANO- & MICROPLASTICS WITH ENTEROVIRUS AND THEIR CYTOTOXICITY ON HUMAN LUNG CELL LINE
… a possible role as viral vectors. Long-term exposure studies demonstrated rapid nanoplastic internalisation and inheritance across 11 generations. Elevated lactate dehydrogenase levels and increased apoptosis indicated persistent intracellular accumulation and compromised cellular health.
-
Evaluation Of The Photo-induced Structural Mechanisms In Chalcogenide
… sub-bandgap femtosecond laser sources and the exposure conditions and their influence on the post-exposure material properties, have been found to have different limitations and driving mechanisms. These mechanisms largely depend on both structural and/or electronic defects, whether initially …
-
The occurrence and distribution of microplastics in surficial sediments and fish in a South African reservoir
… information on feeding behavior in relation to exposure concentrations. I propose the utility of functional response approaches for predictive quantifications of microplastic uptake rates. The sediment microplastics quantification results highlight the need to further explore microplastics …
-
Neural tube defects in rodents caused by a tap water contaminant
… embryos of untreated control mice. Unintentional exposure to a teratogenic agent in tap water was identified as the cause. We aimed to identify the contaminant, but first we demonstrated that the NTDs were pathological being present on both gestational day 9 and 10. We also found that a second …
-
Intraurban Variability of Ambient Particulate Matter
… quality management and for assessing potential exposure misclassification in epidemiological and exposure studies used to support health-based standards. Spatiotemporal variability of PM in urban areas can be influenced by many factors, such as local sources of primary PM; source locations and …
-
In vitro investigation of the anticancer activity and molecular mechanisms of action of albumin nano-encapsulated copper/zinc diethyldithiocarbamate in human pancreatic cancer cells
… the potential for acquired resistance, long-term exposure studies were conducted in PANC1 and MDA-MB231 cells. Resistance emerged to Alb-ZnDDC but not to Alb-CuDDC or free DSF + Cu. The resistant cell lines (PANC1ZR6 and MDAMB231ZR7) represent a significant finding, being the first report of such …
-
Characterizing Engineered Nanomaterials: From Environmental, Health and Safety Research to the Development of Shaped Nanosphere Lithography for Metamaterials
… examination in toxicology and environmental studies. The second is the development of a method to produce nanostructure arrays over large areas and for low cost. A major challenge when assessing nanomaterial’s risks is the robust characterization of their physicochemical properties, …
-
Harnessing New Genomics Technologies to Assess Environmental Risk Factors That May Cause Heritable Genetic Disease
… Lastly, using data from cigarette smoke exposure studies, a common route of BaP exposure, the global impact of smoking on genetic disease burden (1.4 million aneuploidies, 2-8 million mutations) was estimated conservatively at 86 billion dollars per generation for intellectual disease …
-
An assessment of endocrine disrupting potential of a New Zealand pulp and paper mill effluent using rainbow trout Oncorhynchus mykiss and mosquitofish Gambusia affinis
… approach of laboratory and on-site mesocosm exposures. Rainbow trout Oncorhynchus mykiss were utilised in a combination of early life stage and juvenile (+1 year) long- and short term exposures. Exposure of rainbow trout eggs to 15% (v/v) effluent until 10.5 months of age had no effect on …
-
Echogenic Liposomes For Nitric Oxide Delivery and Breast Cancer Treatment
… and control its release via direct ultrasound exposure. Studies on the effect of NO in tumor biology have shown that a high levels of NO (> 300 nM) leads to cytostasis or apoptosis by decreasing the translation of several cell cycle proteins and stimulating cancer cell death by activating the …
-
Using novel portable air quality monitors to improve personal exposure and dose estimations for health studies
… of the causal links between air pollution exposure and human health is needed. However, conventional health studies are restricted by methodological limitations such as miss-estimations of personal exposure and the interdependence between different pollutant species when using traditional …
-
Exposure and Characterization of Candidate Materials for Use in Supercritical Water Reactors
… variation in oxide morphology observed based on exposure temperature was attributed to an increased nucleation and growth rate, and an increased generation of Fe2+ on samples exposed to the transition region and supercritical water. This dissertation also investigated the oxidation of a …
-
Development and characterisation of air-liquid interface exposure systems for cell and tissue cultures
… the need for more comprehensive in vitro aerosol exposure systems to examine how aerosolised substances impact respiratory tissues, cellular responses, toxicity, and overall health. Aerosols possess opposing qualities, serving both as hazards and therapeutic tools, which underscores the critical …
-
A methodological framework to assess multi-pollutant personal air quality exposure for improved health associations
… premature deaths worldwide annually. However, exposure studies, often utilising measurements from stationary outdoor instruments from sparse monitoring networks, cannot capture spatial heterogeneity or the fact that people spend significant fractions of their time indoors. This failure to …
-
An operational method for assessing traffic-related air pollution in urban streets
… years. Several theoretical and experimental studies have focused on the assessment of air quality within street canyons and other microenvironments (intersections, motorways, parking spaces, etc.), where population exposure to traffic-related pollutants is relatively high. The aim of this …
-
An investigation of the biomechanical response from shock wave loading to the head
… of the mechanism of brain injury after exposure to blast and several hypotheses have been suggested. The focus of this research was to investigate one of the hypotheses for primary brain injury due to blast: multimodal skull flexure. The significance of this research is twofold. First, …
-
Metal exposure in non-occupationally exposed pregnant women of Western Australia and contribution of environmental sources
… pollution is a growing global concern and human exposure has been associated with increased chronic and acute health effects even at low metal concentrations (Hu et al., 2006; US EPA, 2007; Rice et al., 2010; UNEP, 2010). Sensitive members of the population, such as neonates, children and …
-
Systematic evaluation of laying hen exposure to atmospheric ammonia
… ppm. Similarly, NIOSH recommends a time-averaged exposure limit of 25 ppm NH3 over an 8-h period for human safety. During extreme weather conditions, the NH3 concentrations in laying hen houses have been measured above these limits. A multi-disciplinary approach is needed to better understand the …
-
Evaluating the resilience of Antarctic echinoderms to Southern Ocean freshening: Short- and long-term responses
… of common Antarctic echinoderms to low salinity exposure over both short- and long-term timeframes, in order to evaluate their vulnerability to present and future climate-change-induced freshening. An initial global literature review of echinoderms revealed inconsistencies in experimental …
Page 1 of 2