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 17 of 17 for “"Coal Dust"”.
-
Modeling of Premixed Coal Dust-Air Flames
Made available in DSpace on 2014-12-14T04:42:04Z (GMT). No. of bitstreams: 1 7820982.pdf: 5341434 bytes, checksum: 2443bb63f897761166e84a9b9326264a (MD5) Previous issue date: 1978
-
Combustion of Coal Dust-Air Mixtures (Flammability, Radiation, Volatile)
Coal dust flammability studies are essential in order to evaluate propagation limit concentrations and the fundamental burning velocity as a function of dust concentration. This work presents such data for Pittsburgh seam bituminous coal dust using a relatively large scale horizontal flammability …
-
Characterising the potential health risks associated with coal dust
Coal dust is inextricably linked to the development of dust diseases. To date, the role of mineral matter in coal has been investigated for its links to pulmonary damage; however, no consensus has been reached on which characteristics are relevant to pulmonary toxicity. This study hypothesises that …
-
Investigation of Coal Dust Remediation using a Surfactant in an Aqueous Solution
… and popular means of combating respirable dust in an underground coal mine. Due to a noticeable increase in black lung among coal miners and new dust regulations, surfactants or wetting agents have been used to aid in dust suppression. The surfactant facilitates the wetting process by …
-
The Ignition of Methane and Coal Dust by Air Compression - The Experimental Proof
… been accompanied by ignitions of methane and/or coal dust. Analytical and numerical analyses investigated the transient behavior of the air through the small time period during which the roof is falling. This is sufficiently short to allow adiabatic compression of the air, i.e. negligible heat …
-
Raman microscopy studies of carbon particles from diesel particulate matter (DPM) and coal dust
Diesel Particulate Matter (DPM) and coal dust samples were characterised using Raman microscopy, X-ray Photoelectron Spectroscopy (XPS), Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), Thermo-Gravimetric Analysis (TGA), X-ray Fluorescence (XRF) spectrometry and Scanning …
-
Determination of the effects of coal dust surface chemicals upon the adsorption of water vapor
Includes bibliographical references.
-
Monitoring and Control of Coal Dust Exposure Using Low-Cost PM Sensors and Computational Fluid Dynamics
<p>"Overexposure to respirable coal mine dust has been linked to causing serious health problems including coal workers pneumoconiosis (CWP) and chronic massive fibrosis. The prevalence of these health problems has been on the increase since the 2000s due to increased exposure levels with roof …
-
Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine
… has monitored nineteen experimental methane and dust based explosions. The objective of the study was to analyze seismic signatures generated by the methane and dust explosions to begin understanding their characteristics at different distances away from the source. The seismic signatures from …
-
Effects of bit geometry in multiple bit-rock interaction
The impact of bit-coal/rock interaction during the cutting process in underground mines is great concern to the mining community of the world. Rock/coal cutting bears directly on rock/coal dust generation that causes "black lung/silicosis" in miners. On the other hand, rock cutting generates …
-
Ultra-wideband radar for robust inspection drone in underground coal mines
Coal mines pose a high safety risk for human workers. An autonomous inspection drone would enable a coal mine operation to reduce this risk by minimizing the time spent by workers inside the mine. This inspection drone must be highly robust to the harsh environment of an underground coal mine, with …
-
Spatial Trends of Non-Point Pollutants in Bottom Sediment of Lake Springfield, Southwest Missouri
… Moderate Cu enrichment is related to wind-blown coal dust from the power plant. Ca is being released from the limestone production factory located along Galloway Creek.
-
Applications of Thermal and Laser-Based Methods for Monitoring Airborne Particulates in Coal Mines
… to monitor airborne particulates in underground coal mines. Specifically, coal and mixed mineral mine dust, as well as, diesel particulate matter (DPM). These particulates have historically, and continue to have, significant health impacts on underground miners. Chapters 1 and 2 of this thesis …
-
Demonstration of Direct-on-filter FTIR to Estimate Silica, Kaolinite, and Calcite Mineral Fraction in Respirable Coal Mine Dust Samples
Respirable coal mine dust (RCMD) has long been recognized as an occupational health hazard. In addition to coal, RCMD can contain minerals such as crystalline silica (i.e., most often present as quartz). There has been a resurgence of lung diseases among US coal miners since the late-1990s which …
-
A Comparative Study of Degenerative Tissue
… of fat in cell degeneration become numerous they coalesce, and if the cellular structure becomes destroyed what is known as “fatty infiltration” results. The theory that calcium is an infiltration is also very well disproven by later authorities on pathology. The calcium compounds in the body are …
-
Caracterización de las condiciones de salud respiratoria de los trabajadores expuestos a polvo de carbón en minería subterránea en Boyacá año 2013
Objetivo: Caracterizar las condiciones de salud respiratoria y establecer los factores de riesgo asociados al desarrollo de neumoconiosis en trabajadores expuestos a polvo de carbón que laboraron en minas de socavón en Boyacá durante el año 2013. Materiales y método: Se realizó un estudio …