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 258 for “"Particulates"”.
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Analysis of Automobile Exhaust Particulates
Made available in DSpace on 2014-12-10T23:01:54Z (GMT). No. of bitstreams: 1 7500270.pdf: 7433759 bytes, checksum: 40f46d0cace79973401c760f1798b69e (MD5) Previous issue date: 1974
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Inhalation exposure system for diesel exhaust particulates
The objectives of this research were twofold. First, a Hazelton 2000 Inhalation Chamber was modified to minimize the amount of diesel exhaust particulate (DEP) needed for animal inhalation exposures. Second, instrumentation was evaluated for aerosolizing DEP, monitoring the mass concentration and …
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The long range dispersion of radioactive particulates
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1982.
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Stable isotope geochemistry of nitrogen in marine particulates
Isotope studies of nitrogen and carbon were undertaken to investigate the fate of particulate organic matter (POM) during its residence in the water column and after deposition on the seafloor. The processes focused on were water-column transformations and sedimentary diagenesis. Sampling sites …
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Wetting of ceramic particulates with liquid aluminum alloys
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1987.
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Stable isotope geochemistry of nitrogen in marine particulates
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1983.
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Time domain metrology for dielectric spectroscopy of particulates
Several methods for evaluating the permittivity of soil samples using measurements in the time domain were studied. A number of algorithms for inverting the measured data to obtain epsilon were investigated and three different types of sampling devices were examined. The investigation examined the …
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Fluxes, dynamics and chemistry of particulates in the ocean
Sediment traps designed to yield quantitative data of particulate fluxes have been deployed and successfully recovered on four moorings in the deep sea. The traps were designed after extensive calibration of different shapes of containers. Further intercalibration of trap design was made in field …
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The Control of Diesel Particulates in Underground Coal Mines
The aims of the research for this thesis were fourfold, all of which focused at reducing employee exposure to diesel particulate in underground coal mines. The four aims were to: a) Develop a method to test disposable diesel exhaust filters and if possible improve their performance b) Investigate …
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Fluxes, dynamics and chemistry of particulates in the ocean
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Arrayed microfluidic actuation for active sorting of fluid bed particulates
Fluidic actuation offers a facile method to move large quantities of small solids, often referred to as fluid-bed movement. Applications for fluid bed processing are integral to many fields including petrochemical, petroleum, chemical, pharmaceutical, biochemical, environmental, defense, and …
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SYNTHESIS AND CHARACTERIZATION OF MODEL AQUATIC PARTICULATES FOR USE IN SORPTION STUDIES
… particulars is the object of this dissertation. Particulates were synthesized from illite, humic and fulvic acids, and iron, aluminum, and manganese hydrous oxides. Characterization included measurement of cation exchange capacity (CEC), and attempts to determine surface area and the pH of zero …
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Particulates Initiate Immune Response Via Inducing Oxidative Stress-Mediated NLRP3 Inflammasome Activation
… evidence has indicated that exposure to other particulates, such as crystals, can activate the NLRP3 inflammasome in phagocytes. To delineate the mechanism by which particulates (liposomes/crystals) activate the NLRP3 inflammasome, I further hypothesize that particulates induce oxidative …
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Time Series Analysis of Fine Particulates Matter (PM2.5) in Chaoyang District of Beijing
Air pollution in Beijing is becoming hard to ignore, however, there are no long-term studies examining the particle pollution such as PM 2.5 concentration. This study describes current and predicts future PM 2.5 pollution for a three-year period, 1st January 2010 to 31st December 2012, from the …
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Ultrasound assisted low-temperature synthesis of TiB2 and Al3Ti particulates in molten aluminum
… reinforced Al composites. TiB<sub>2</sub> particulates can be synthesized in molten Al via the mixed-salts reaction by adding mixed K<sub>2</sub>TiF<sub>6</sub> and KBF<sub>4</sub> salts into the Al melt at high temperatures. Al<sub>3 </sub>Ti particulates can be produced by the direct-melt …
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Leveraging features of nanoscale particulates for information encoding, quantitative sensing and drug delivery
It is both uncontroversial and unassailable to assert that small things can often go where big things cannot. It is similarly prosaic to note that at smaller length scales, matter behaves differently than at larger length scales. This thesis exploits these intuitive and simple axioms to yield …
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Testing the Forensic Predictive Geolocation Significance of Human-made Particulates in Urban Surface Soils
… geolocation significance of human-made particulates in urban surface soil samples using quantitative data. <br/><br/>In total, 78 samples have been collected from 2 urban areas (Enschede, the Netherlands & Cardiff, Wales) and 1 rural area (Cornwall, England). Multiple analyses were done …
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The effect of non-biological particulates on microbial cell disruption in a slurry bioreactor
Cell damage from hydrodynamic stress is an important consideration in biological systems since it can result in the growth and function of the cell becoming impaired (Toma et al. 1991, Lilly et al. 1992). In the extreme case of cell damage, cell disruption occurs. This dissertation presents the …
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Applications of Thermal and Laser-Based Methods for Monitoring Airborne Particulates in Coal Mines
… and laser-based methods 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. …
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