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 28 for “"Toxic gases"”.
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Kinetic processes and plasma remediation of toxic gases
Regulations on the allowable emissions of toxic gases have resulted in increasing industrial interest in the development of energy efficient methods for remediation. In this work we computationally study the application of Dielectric Barrier Discharges to the remediation of perchloroethylene …
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Occupant tenability in large-scale residential fires: an analysis of heat exposure, toxic gases, water application, and fire-service ventilation
… years. Modern fires burn faster and produce more toxic gases due to the increased presence of synthetic materials and plastics in the fire environment. In order to gain a better understanding of the risks present in modern residential fires and the effect of modern firefighting tactics on the fire …
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Predicting toxic gas concentrations resulting from enclosure fires using the local equivalence ratio concept linked to fire field models
… A main component of fire effluent are toxic gases and one of the main toxic gases responsible for a significant number of fire fatalities is Carbon Monoxide (CO). Current engineering fire field models either ignore the prediction of toxic gas generation or require the use of detailed …
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Economic evaluation of toll plaza operations
… are then utilized to evaluate user costs and toxic gases emitted in toll plazas. A large amount of information on highway user costs was collected and synthesized to be incorporated in this economic evaluation. Recommendations on the amount of toll that should be charged to take into account …
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The Chemistry of Metal Oxyhydroxides and their 3D Porous Hybrid Materials for the Capture, Transport and Degradation of Toxic Chemicals
Growing concerns regarding chemical weapons and toxic chemicals require the development and testing of robust materials and methods to capture and destroy these harmful chemicals. This dissertation discusses the fundamental properties (e.g., structure, stability and activity) of metal oxyhydroxide …
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Development of enclosed life support system for underground rescue employing a photocatalytic metal oxide thin film to generate oxygen from water and reduce carbon dioxide
… to underground explosions and generation of toxic gases, commonly result in the trapping of miners without oxygen for an extended period of time. As an example, in January 2006, an accident at the Sago Mine in West Virginia trapped 12 coal miners underground for 41 hours and resulted in the …
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Doping of Metal Organic Framework (UiO) and for N02 adsorption at ambient Conditions
… technologies. Nitrogen dioxide NO2 is one of the toxic gases in the atmosphere that is corrosive; it causes severe damage to materials, even at low concentrations. Research on the adsorption of this gas at atmospheric pressure and ambient temperatures is uncommon because of limited industrial …
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A Machine Learning Based Victim's Scream Detection System for Burning Sites Using an Autonomous Embedded System Vehicle
… the world. Extreme temperatures, low visibility, toxic gases, and unknown locations of victims create difficulties and delays in rescue operations, escalating the risk of injury or death. It is time-critical to detect the victims trapped inside the burning sites for facilitating the rescue …
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Experimental study of bubble rupture during shock-fluid interaction
… and 4) exposure to high temperature and toxic gases (quaternary). One of the mechanisms implicated in non-impact primary blast-induced traumatic brain injury (bTBI) is cavitation. It is hypothesized that cavitation can occur in the cerebrospinal fluid (CSF) layer, brain interstitial …
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Development of mouse models of hydrogen sulfide-induced neurotoxicity for the evaluation of neuroprotective strategies
… to high concentrations can result in extreme intoxication, leading to acute death within minutes. H2S poisoning is a leading cause of occupational deaths. Among toxic gases, H2S follows only carbon monoxide poisoning as a leading cause of death. There is also concern for this chemical to …
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Analysis and Application of Coal Seam Seismic Waves for detection of Abandoned Mines
… are prone to accumulate water, methane or other toxic gases, and are often either poorly mapped or without good surface survey control. Mining into such abandoned voids poses a great safety risk to personnel, equipment, and production from inundation or toxic/explosive gas release. Often, surface …
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Using Machine Learning to Classify Danger Levels and Prediction Techniques to Forecast Temperature Changes with Height in Burning Sites
… Factors such as extreme temperatures, smoke, toxic gases, explosions, and falling objects inhibit their efficiency and risk their safety. These factors could change within a twinkle of an eye. Firefighters must be provided with accurate information and data about the burning site. They can …
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Non-silicon Microfabricated Nanostructured Chemical Sensors For Electric Nose Application
… better selectivity for different targeting toxic gases including hydrogen, carbon monoxide, hydrogen sulfide etc. Fundamental issues like sensitivity, selectivity, stability, temperature influence, humidity influence, thermal characterization, drifting problem etc. of SMO gas sensors have …
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Calculation of smoke ventilation in building fires including atriums
Large quantities of smoke, heat and toxic gases are produced in a building fire. Due to air entrainment into the fire plume, an increasing volume of smoke is generated and spreads throughout the upper layer. The smoke forms a layer which deepens, filling the compartment while simultaneously …
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The transport and remote oxidation of compartment fire exhaust gases
… compartment fires result from inhalation of the toxic gas, carbon monoxide (CO), especially in locations remote from the burning compartment. This causes the transport and oxidation of CO in burning buildings to become an important topic. Studies have been conducted to determine the toxic …
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A trial evaluation of the participatory action oriented training programme in small and medium scale enterprises in Vietnam
… (personal dust (n=360), static dust (n=360), toxic gases (n=72), noise (n=540), lighting (n=900), air temperature (n=720), air humidity (n=720), air velocity (n=720)). Data were also collected quarterly follow-up visits to record the number of improvements that had been made, and to obtain …
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Interactive Wireless Sensor for Remote Trace Detection and Recognition of Hazardous Gases
… wireless sensor detects many hazardous gases such as Hexane, Propane, Carbon monoxide and Hydrogen. These gases are highly toxic and used in different kinds of manufacturing industries, domestic purpose and so on. So, building a sensor that can detect this kind of gases can save the …
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Cattle feedlot dust: Solubility in lung simulant fluid and stimulation of cytokine release from lung epithelial cells
… compounds, transition metals, and adsorbed toxic gases. Since each component is toxic in itself, we do not fully understand the relative importance of each component in the dust and their interactions to inducing inflammatory changes in the lung. We did extensive literature searches to …
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Bridge to digital converters for environmental monitoring in edge IoT devices
… in industries that handle flammable or toxic gases, which pose serious health risks. Consequently, there is an increasing focus on developing wearable gas sensors to protect workers in manufacturing and other sectors requiring constant exposure monitoring. This thesis explores interfaces …
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The generation of carbon monoxide in compartment fires
… for actual compartment fires. Since the flow of toxic gases from a room poses a hazard to building occupants, it was also important to determine if correlations for CO yield outside of a compartment on fire exist, particularly when external burning occurs. A 2.2 m³ test compartment was used to …
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