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 61 for “"Respirable"”.
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Geochemical Investigations of Respirable Particulate Matter
… in the disease models associated with airborne respirable particulate matter. Secondly, the bioavailability of As and Cr was determined from a sample of coal fly ash from an eastern U.S. power plant. The time-release profiles of As and Cr were determined for these materials in …
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RESPIRABLE SIRNA TARGETING AT THE NF-KB PATHWAY PROTECTS AGAINST INFLAMMATORY LUNG DISEASES
Asthma and chronic obstructive pulmonary disease (COPD) are common inflammatory pulmonary diseases. Cumulative evidences have shown the role of NF-kB signaling pathway in the pathogenesis of asthma and COPD. Ribosomal protein S3 (RPS3) is a subunit of NF-kB complex while receptor-interacting …
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Effects of Dust Controls and Dust Sources on Respirable Coal Mine Dust Characteristics
Respirable coal mine dust (RCMD) continues to pose serious health hazards to workers. Over the past few decades, new regulations, monitoring technologies, and improved dust controls have emerged, and all are based on the presumption that limiting RCMD on the basis of mass will effectively mitigate …
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Demonstration of Optical Microscopy and Image Processing to Classify Respirable Coal Mine Dust Particles
Inhalation of respirable coal mine dust (RCMD) can lead to chronic lung diseases, including coal worker’s pneumoconiosis (CWP) and more severe forms such as progressive massive fibrosis. After the Federal Coal Mine Health and Safety Act was passed in 1969, limits on exposure to respirable dust were …
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Exploration of Respirable Dust Particles Sourced From Rock Strata in an Underground Coal Mine
Enactment of regulatory standards for respirable coal mine dust (RCMD) concentration and crystalline silica content, and advancements in mine ventilation and dust controls led to a steady decline of occupational lung disease among US coal miners between the early 1970s and the mid-1990s. Since that …
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Development and Implementation of an Automated SEM-EDX Routine for Characterizing Respirable Coal Mine Dust
… microscopy routine for characterization of respirable dust particles from coal mines. Respirable dust in underground coal mining environments has long been known to pose an occupational health hazard for miners. Typically following years of exposure, coal workers' pneumoconiosis (CWP) and …
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An Evaluation of exposures to respirable particulates, environmental PM2.5, PAHs and metal compounds in Western Australia
… 1: An Evaluation of Children’s Exposures to Respirable Particulates, Environmental PM2.5, PAHs and Metal Compounds in The South West of Western Australia. A cross sectional study to evaluate the exposures of children (n=18), and controls (n=15) to respirable particulates PAHs and metal …
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Rapid FTIR analysis for respirable crystalline silica monitoring in coal mines using readily available sampling equipment
In coal mines, workers can be exposed to respirable coal mine dust (RCMD) in conjunction with respirable crystalline silica (RCS). Overexposure can pose serious health risks, including development of coal workers' pneumoconiosis (CWP) (also known as "black lung"). CWP has the potential to progress …
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Development and Demonstration of a Standard Methodology for Respirable Coal Mine Dust Characterization Using SEM-EDX
… method of analysis of coal mine dust. Respirable dust is specifically of interest due to its ability to cause occupational lung disease when miners are overexposed to airborne concentrations. A detailed standard methodology to characterize respirable mine dust is carefully investigated …
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Development and Implementation of a Standard Methodology for Respirable Coal Mine Dust Characterization with Thermogravimetric Analysis
… analysis and characterization of coal mine dust. Respirable dust has long been an industry concern due to the association of overexposure leading to the development occupational lung disease. Recent trends of increased incidence of occupational lung disease in miners, such as silicosis and Coal …
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Exposición acumulada de polvo respirable como predictor de enfermedad respiratoria. Asociación entre la dosis acumulada de polvo respirable y las alteraciones respiratorias no malignas en los trabajadores de una empresa de minería de carbón a cielo abierto
… a partir de la exposición acumulada de polvo respirable - y en los trabajadores de una empresa de minería a cielo abierto en Colombia, se estructuró este estudio de cohorte. Se contó con el registro de 566 trabajadores distribuidos en 29 Grupos de Exposición Similar (GES). El cálculo de la …
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Aerosol Samplers Comparison: IOM Dual Sampler (Inhalable & Respirable) vs Conventional Methods for Assessing Welders Exposure to Manganese
… is capable of providing both inhalable and respirable portions of airborne particles by using only one sampling device. For this study, the IOM dual fraction sampler was compared with OSHA method ID-125G for determining occupational exposure to airborne Mn contaminant during Shielded Metal …
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An Improved Thermogravimetric Analysis Method for Respirable Coal Mine Dust and Comparison to Results by SEM-EDX
… that chronic exposures to high concentrations of respirable coal mine dust can lead to the development of lung diseases such as Coal Worker's Pneumoconiosis, commonly referred to as "black lung", and silicosis. Since the mid-1990s, an alarming resurgence of diseases has been documented in central …
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Investigating the Effects of Particle Loading and Agglomeration on Respirable Coal Mine Dust Particle Classification by SEM-EDX
Respirable coal mine dust (RCMD) still poses serious occupational health hazards to coal miners and can lead to incurable lung diseases such as coal workers' pneumoconiosis (CWP, also referred to as "black lung"). Further, CWP can develop into a more severe form known as progressive massive …
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Evaluation and Comparison of Environmental Contaminants Present in Two Types of Swine Rearing Facilities
… environmental contaminants. Levels of total and respirable dust and endotoxin, carbon monoxide, carbon dioxide, ammonia, and temperature and percent relative humidity were measured in two types of swine rearing facilities: isolated nursery and nursery within a conventional farm. We found isolated …
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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 …
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Determination of baseline data on respirable dust concentration for safety and health enhancement in selected small and medium industries in Johor
… matters in industry at Malaysia especially respirable dust. This study was focus on the respirable dust concentration and their respirable health symptoms in selected industry. Three (3) case studies had been done as data collection. For each case, several sampling location was chosen for …
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Application of a TGA Method to Estimate Coal, Carbonate, and Non-carbonate Mineral Fractions as a Proxy for the Major Sources of Respirable Coal Mine Dust
Inhalation of respirable dust in coal mines is a serious occupational health hazard which can lead to the development of chronic and irreversible lung diseases, such as Coal Worker's Pneumoconiosis (CWP) and Progressive Massive fibrosis (PMF). After the passage of the Federal Coal Mine Health and …
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Relationship between cutting parameters and bit geometry in rotary cutting
… penetration force, specific energy, specific respirable dust) and the bit geometry parameters (angle of the bit tip, bit tip size and shape of the bit) in order to reduce the amount of specific respirable dust generated and the specific energy consumed in rotary cutting. In the cutting process …
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