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.
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Showing 1 to 20 of 33 for “"pollution monitoring"”.
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Integrated data-driven techniques for environmental pollution monitoring
… framework for the classifi_x000C_cation and monitoring of systems with multiple variables. Cluster analysis, sequence analysis and hidden Markov models (HMMs) are statistical methods which have been used in a wide range of studies to model the data structure. In this dissertation, we propose …
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Long period fibre grating as gas sensor for environmental pollution monitoring.
… methods proving most suitable. A novel method of monitoring the build up of PESA layers in-situ using surface plasmon resonance (SPR) methods is introduced. The coating chemicals used in this investigation showed some optical sensitivity at the optimum wavelengths used in optical fibres to the …
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UNDERSTANDING MISSING DATA IN REAL-TIME POLLUTION MONITORING SYSTEM IN CHINA
Using both remote sensing data on air pollution and publicly reported hourly PM2.5 data from ground-level monitoring stations, this paper examines whether the quality of the publicly reported PM2.5 is affected by selective reporting whereby high-level hourly pollution readings are dropped in the …
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Planar waveguide enzyme sensors coated with nanocomposite membranes for water pollution monitoring.
… developing a highly sensitive enzyme sensor for monitoring typically agricultural and industrial water pollutants. The Si[3]N[4] surface of the waveguide sensing window was coated with nanocomposite polyelectrolyte selfassembled (PESA) membranes containing cyclotetrachromotropylene (CTCT) …
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Ambient air pollution monitoring, modelling and human health risks in Thulamela Municipality, Vhembe District of Limpopo Province, South Africa
Ambient air pollution is a pressing global environmental concern, with pollutants from natural and anthropogenic sources contributing to deteriorating air quality. This research investigates the impact of sulfur dioxide (SO₂), nitrogen oxides (NOₓ), carbon monoxide (CO), and particulate matter …
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Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment
… the common sea urchin Parechinus angulosus for pollution bioassay in the nearshore marine environment. was investigated. Discreet stages of development from freshly spawned gametes. through fertilization. pre-hatch development and post-hatch development to 70 - 80 h pluteus larvae were utilized …
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Performance of Lichen Species as Air Pollution Biomonitors in the Greater Auckland Urban Area, New Zealand
Air pollution monitoring devices are often expensive and require high technical skills to operate. Lichens as biomonitors are an effective complementary because they accumulate pollutants in line with atmospheric concentrations. This research assesses the performance of lichens as air pollution …
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Physio-morphological effects of abrupt thermal stress on diatoms
… and communities of aquatic organisms to thermal pollution can thus be anticipated when natural water systems are utilized as a cooling source. The majority of research effort relative to the effects of heated waste waters on aquatic systems has been directed towards macro- as opposed to …
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The role of weather and topography in the airborne dispersal of particulate matter in Kent
… material (PM10) concentrations recorded at 17 pollution monitoring sites throughout Kent for the period 2000 to 2008, as an aid to understanding dispersal patterns in relation to topography. In general, local and synoptic wind direction patterns followed the same trends: the yearly distribution …
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Air pollution exposure during pregnancy among rural Ugandan women
Introduction: Air pollution monitoring of hazardous pollutants such as CO (Carbon Monoxide) and PM (Particulate Matter) are important for assessing whether air pollution thresholds are not exceeded in the environment. There is sparce data that has been collected in the African region for air …
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The environmental effects of air pollution from the energy sector in South Africa
… data describing the environmental effects of air pollution in South Africa were examined, with a focus on the effects that are produced by the use of energy. This examination consisted of three parts: The emissions resulting from the use of the different fuels were calculated, with a complete …
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Development of defined media for motility and for growth of Spirillum volutans, with special reference to biological monitoring of pollutants and to obligate microaerophilism of bacteria
… effluent for the purpose of in-plant biological monitoring. The other was a nutritional study of the organism with emphasis on its obligate microaerophilism. In the pollution monitoring project, flagellar uncoordination in S. volutans was studied as a bioindicator of toxicity. Uncoordination is …
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Essays on the economics of pollution prevention
… unintended consequences of intermittent air pollution monitoring. Compliance monitoring of environmental standards is often conducted intermittently due to its expense. Intermittent monitoring, however, may encourage polluters to show compliance during monitoring, but to increase polluting …
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Making Air Quality Count: Low-cost sensors, Public Health and Urban Planning
Ambient air pollution is responsible for ~ 4.2 million premature deaths every year making it the world’s single largest environmental health risk. Although 90% of this burden is borne by countries in the Global South, effective air pollution governance and monitoring in many of these countries is …
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Efficient Communication Protocols for Underwater Acoustic Sensor Networks
… applications in oceanographic data collection, pollution monitoring, offshore exploration, disaster prevention, assisted navigation, tactical surveillance, and mine reconnaissance. The enabling technology for these applications is acoustic wireless networking. UnderWater Acoustic Sensor Networks …
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Assessment of soil erosion hazard around the abandoned mine in formerly Mutale Municipality, Limpopo Province, South Africa
… of mines without appropriate remediation and pollution monitoring was the result. Soil erosion has been recognised as an environmental hazard that emanates from abandoned mines. This study seeks to assess the soil erosion hazard around Nyala abandoned mine. The modified method of Soil Loss …
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An integrated assessment of environmental impact and sustainability of oil refinery development and operations in a developing country: a case study of Kaduna refinery in Nigeria
… economic, or social systems that is useful for monitoring environmental changes. The study aims to develop an integrated approach to enhance understanding of sustainability in oil refinery development and operations in a developing country, using a case study of the Kaduna refinery, Nigeria. The …
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Urban Sound and Environmental Monitoring using Distributed IoT Sensor Nodes
Urban sound and environmental monitoring are essential in urban planning, noise pollution control, and public safety. By collecting and analysing urban data, cities can make proper decisions to improve the quality of life for their residents. This research proposes a scalable, flexible, and …
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Printable and Machine Intelligent 0D/2D Materials Gas Sensor Arrays
… trace-level gas concentrations is crucial for pollution monitoring, hazard gas detection, point-of-care disease monitoring, etc. Yet the most widely used gas sensors based on semiconducting metal oxide (SMO) suffer notably from high power consumption, slow response, poor sensitivity, and …
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Modelling of Air Pollution and Evaluation of the Human Health Implication in Phalaborwa, Mopani District, South Africa
Air pollution has increased public health concerns and is currently a scientific research interest in both developed and developing countries due to its critical impacts being instigated on man, animals, water, and the entire environment. Thus, may become the major environmental basis of mortality …
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