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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 53 for “"impaction"”.
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Magnetically assisted impaction mixing of nanosize particles
Magnetically assisted impaction mixing (MAIM) is a novel dry mixing technique, which can be used to mix nanoparticles. Mixing of nanoparticles is usually conducted in solvent-based mixing techniques. The solvents used in these techniques are usually organic, which can be expensive and harmful to …
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Mixing of nanosize particles by magnetically assisted impaction techniques
… homogeneity of the mixture. The effect of magnet impaction on mixing quality was examined on the HoM of binary mixtures. The research shows that HoM improved with magnetically assisted impaction mixing techniques indicating that the HoM depends on the product of processing time with the number of …
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Analysis of the non-isothermal impaction-spreading and freezing of metal droplets
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Mechanical and biological augmentation of allograft and synthetic graft in impaction bone grafting
… human bone marrow stromal cells<br/>(HBMSC) in Impaction Bone Grafting (IBG).<br/><br/>• To investigate the potential role of a synthetic graft, Poly (DL-lactic acid),<br/>(PDLLA) as a tissue engineering scaffold and a graft extender in IBG.<br/><br/>• To investigate methods to improve graft …
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Simulation and modeling of magnetically-assisted impaction coating (MAIC) process for dry particle coating
… length and time scales in magnetically assisted impaction coating process. The smallest length scale is of the order of the molecular size and is important because during collisions the molecules rearrange themselves to form a semi-permanent bond between the core and secondary particles, which is …
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An Exploration of Effects of State Impaction on Financing Schools in Unitdistricts of Illinois
Made available in DSpace on 2014-12-08T21:24:19Z (GMT). No. of bitstreams: 1 6711824.pdf: 3785598 bytes, checksum: 39d42ecdae340b2954f69d35cc48f059 (MD5) Previous issue date: 1967
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Effect of extraction time and impaction type on complication after extraction of lower third molars
The impaction type of the third molar in the lower jaw is classified in various ways. This suggests that flap elevation tooth and bone cutting and time of extraction depends on the degree of impaction in the third molar of the lower jaw and thus they affect the complication after extraction. …
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Dry magnetic assisted impaction mixing of sub-micron boron and barium chromate for a time delay composition
… mixing technique, , called the Magnetic Assisted Impaction Mixing (MAIM). Two additional mixing methods, ultra-sonic mixing and shaker mixing (dry and wet), were used for comparative analysis, to evaluate the mixing effectiveness of the MAIM which was also compared to two Navy mixed T-l0 samples. …
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Development and Evaluation of a Small Volume Liquid Impaction Surface (SVLIS) in the Next Generation Impactor (NGI)
… design and evaluation of a Small Volume Liquid Impaction Surface (SVLIS) in the Next Generation Impactor (NGI), a cascade impactor for evaluation of aerodynamic particle size distribution. This SVLIS modified NGI allowed for incorporation of lung cell cultures or drug dissolution of orally …
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Collection of Aerosols by Fiber Mats: I. Impaction on Single Cylinders (Metallic Wires). Ii. Collection Efficiency and Pressure Drop of Fiber Mats
Made available in DSpace on 2014-12-05T17:15:10Z (GMT). No. of bitstreams: 1 0007886.pdf: 6892457 bytes, checksum: b2eafec692e9d0535562390dd59cf9b1 (MD5) Previous issue date: 1954
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A novel cough aerosol sampling device for sputum-scarce individuals with tuberculosis
… is not possible. These systems rely on inertial impaction whereby particles are sorted based on their diameter. Thus, CASS also offers information regarding the infectivity of the patient based on their expelled aerosol sizes. This is because smaller respiratory droplets can travel to the …
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Where the Spores at? Insights into the Residential Indoor Mycobiome of South Africa
… summer rainfall]). Air samples were collected by impaction and identified to genus level by morphological characteristics. It was found that, in accordance with international findings, fungal abundances remained stable interannually. Additionally, Cladosporium dominated fungal communities in both …
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Flow Effects Upon the Repassivation of Iron and Cobalt in Neutral and Acidic Solutions
… in a specially designed flow cell. Particle impaction and subsequent depassivation were simulated through amperometric reduction of the oxide layer. Repassivation of iron, cold rolled steel, and cobalt in neutral and acidic aqueous sulfate solutions was investigated by observing …
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Digital Microfluidics for the Detection of Inorganic Ions in Aerosols
… digital microfluidics technology, aerosol impaction and chemical detection on the same chip. The system will be smaller and faster with respect to current aerosol analyzing instruments. The chip in this study performs the integrated functions of aerosol collection, extraction, and …
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Ruminal Degradation of Polyhydroxyalkanoate and Poly(butylene succinate-co-adipate)
The occurrence of plastic impaction in ruminants is a growing concern. As indiscriminate feeders, cattle may consume plastic foreign materials incorporated into their diets and it is currently estimated that 20% of cattle contain plastic foreign materials in their rumen. These materials are …
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Bench-scale evaluation of an energy efficient acoustic aerosol purification device with a newly designed bioaerosol testing and evaluation chamber
… In this research, a novel Acoustically Enhanced Impaction (AEI) air purification technology is evaluated as a potential alternative to HEPA filtration in building protection applications. AEI utilizes intense sound fields to induce aerosol drift and enhance probability of impaction on coarse …
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Measurements and Modeling of Coal Ash Deposition in an Entrained-Flow Reactor
… UDF consists of models governing ash particle impaction and sticking, thermal and physical properties of ash deposits, unsteady growth of the ash deposits, and the effects of the insulating ash layers on the combustion processes. The ash layer is allowed to transition from an accumulation of …
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A study on relationship between subjective periodontal health status and objective periodontal index among adult
… treatment group showed common symptoms, "food impaction" and "toothmobility". The lower age group, no recent treatment group(1year), no scaling group, and the no regular check-up group were all aware of "presence of calculus" inside the mouth. CPI was relatively high in the high age group and …
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Die Arthroskopie bei Erkrankungen des Handgelenks
… evaluiert. Bei der Gruppe mit Ulnar Impaction Syndrome infolge primärer oder sekundärer Ulnaplusvariante (n=10) konnten mit Wafer-Resections und Ulnaverkürzungen sehr gute Ergebnisse erreicht werden. Durch diese Behandlungsmethoden bleibt der TFCC in Form und Funktion erhalten und …
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