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 952 for “"dust"”.
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Circumplanetary dust dynamics : application to Martian dust tori and Enceladus dust plumes
Our Solar system contains a large amount of dust, containing valuable information about our close cosmic environment. If created in a planet's system, the particles stay predominantly in its vicinity and can form extended dust envelopes, tori or rings around them. A fascinating example of these …
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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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Wireless Dust Sensor Network for a Feedlot Dust Abatement Study
… Feeding Operations (CAFOs) generates large dust plumes causing visibility and human health issues. The ability to measure with many sampling points across a field and to have vertical measurements would aid in the characterization of dust plumes by providing a more accurate, average …
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Industrial dust collection
Thesis ()--Michigan State College of Agriculture and Applied Science, 1931
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Kicking up dust
Word processed copy.
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Complex Molecules in Galactic Dust Cores: Biologically Interesting Molecules and Dust Chemistry
In Chapter 5, we show that HCOOH appears to exist ubiquitously in dense molecular cores in either solid or gas phase. The detected HCOOH sources are good candidate targets for future acetic acid and glycine searches. Preliminary results from new 1 mm band observations toward Sgr B2 and Orion KL are …
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Dust and its control
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1936
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Panpsychism And Mind-Dust
… objections to the view, which I label the 'mind-dust' objection in homage to William James. It is essentially the conceptual difficulty of how proto-experiential being at the micro-level is supposed to 'sum' in a way that forms the consciousness with which we are intimately aware. I argue that …
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Dust in circumstellar disks
… studies of the size and spatial distribution of dust particles in circumstellar disks. Using millimetre interferometric observations of optically thick disks around T Tauri stars, I provide conclusive evidence for the presence of millimetre- to centimetre-sized dust aggregates. These findings …
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Dust in Globular Star Clusters
Made available in DSpace on 2014-12-14T14:37:23Z (GMT). No. of bitstreams: 1 7804041.pdf: 6392277 bytes, checksum: 59a48988b749e41693b5f8d13a13ad89 (MD5) Previous issue date: 1977
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Outflows and Dust in Quasars
… from the hottest, sublimation-temperature dust components in the near infrared spectra of quasars. This dust is believed to be located at the inner edge of the toroidal obscuring structure. The strength of hot dust emission is found to correlate with the quasar outflow properties, providing …
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Evaluating different remote sensing techniques for detection of Saharan dust and characterisation of dust sources
Mineral dust aerosols play an important role in climate and the Earth's energy budget. However, the nature and complexity of dust sources is poorly understood. Traditional techniques used for mapping the Sahara dust sources like the analysis of surface dust observations, back trajectory analysis of …
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ENHANCEMENT AND RESTORATION OF DUST IMAGES
This dissertation focuses on the modeling of dust noise on ordinary images and formulating enhancement and restoration strategies to improve the quality of dusty images using a sequence of image processing steps. Analyses of images acquired in dusty environments show that the images tend to have …
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Characterising South Africa’s major dust sources
… study investigates the surface controls of major dust emissions and determines the patial distribution of major dust source in South Africa. This study follows a multi-disciplinary approach where primary and secondary data were used. The main objective of the study is to determine the spatial …
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