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 20 of 116 for “"agglomerates"”.
-
Enhanced fluidization of nanoparticle agglomerates
Gas fluidization of nanoparticle agglomerates has recently received much attention due to the excellent way in which these novel nanornaterials can be dispersed in a gaseous medium. Nanopowders have a very high surface area to volume ratio which allows them have unique chemical and physical …
-
Jet assisted fluidization of nanoparticle agglomerates
… with achieving homogenous fluidization of the agglomerates of nanoparticles, several methods have been developed to assist their conventional mode of fluidization. In this work, the conventional mode of fluidization was coupled with secondary gas flow emerging from a micro jet nozzle. The …
-
Pure Insulin Nanoparticle Agglomerates for Pulmonary Delivery
Diabetes is a disease characterized by defects in insulin utilization, either through autoimmune destruction of insulin-producing cells (Type I) or insulin resistance (Type II). Treatment includes regular insulin injections, which can be painful and inconvenient, often leading to low patient …
-
Glom : information agglomerates-- an organic representation for quantitative information
Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1998.
-
Enhancement of fluidization and filtration using nanoparticle agglomerates and aerogels
… by customized granular media made of either agglomerates of nanoparticles, aerogel granules or carbon black granules challenged against submicron aerosol particles and oil droplets. Both packed and fluidized customized filters were studied. It is shown that a granular bed filter of porous …
-
Crystallization process development and spherical agglomerates for pharmaceutical processing applications
… two separate projects involving spherical agglomerates. In the first study, acetaminophen was shown to crystallize significantly faster in the presence of spherical agglomerates of lactose than single crystal lactose. An epitaxy study and molecular dynamics simulations showed that the …
-
The Influence of Powder Surface Chemistry on The Development of Ceramic Microstructures (Sintering, Micro-Agglomerates, Adhesion)
The processing cycle of a ceramic is traditionally divided into two distinct steps: processing before and after firing. In terms of processing conditions and microstructure development, continuity is usually not assumed, and the variability of powder properties is usually thought to not affect the …
-
Characterization of aerosols in an underground mine
… morphological and physical attributes of diesel agglomerates is therefore of great importance to be able to identify the source and improve removal technology. Size-segregated sampling was conducted in two phases of underground experiments. Scanning transmission electron microscopy and fast …
-
Gas fluidization of nanoparticles
… on the gas fluidization of various nanoparticle agglomerates. Firstly, the gas fluidization characteristics and regime classifications without any additional external force fields are identified using both experimental measurements and modeling. Secondly, the effect of introducing certain …
-
Formation of optimised particles for formulation and processing
… can be used in order to obtain spherical agglomerates with enhanced properties. Spherical agglomerates are produced through cooling crystallization in ethanol-water mixture under specific process conditions involving liquid-liquid phase separation; hence ternary phase diagrams were …
-
Transport and Agglomeration of Dust Contaminant Particles in Reactive Ion Etch Reactors
The morphology of the agglomerates formed was also found to be dependent on plasma conditions. Agglomerates generally grow either in a diffusive or ballistic manner. Neutral gas flow in the reactor has been found to be a useful means of controlling contamination. Higher flow rates can sweep dust …
-
Encapsulation of particles using brittle coatings for subterranean applications
… its brittleness. The acrylate formed agglomerates during the coating process. These were easier to break than single particles. These agglomerates also gave a low leach rate and large release upon compression.;Agglomerates coated with acrylate and silica provide a novel solution to the …
-
Mixing of nanoparticles in a stirred tank in high pressure carbon dioxide
… they often form large micron-sized agglomerates, thus losing their main advantage of small size and high surface area. Therefore, breaking of these agglomerates is necessary prior to mixing. One of the techniques to achieve deagglomeration and mixing of nanoparticles is based on …
-
Methods of Improving Oil Agglomeration
… emulsions with ultrasonic energy, breaking agglomerates with ultrasonic energy, and breaking agglomerates using vibrating mesh plates. On the basis of the laboratory test work, a semi-continuous test circuit was built and tested using an ultrasonic vibrator to break the water-in-oil …
-
Slurry abrasive particle agglomeration experimentation and modeling for chemical mechanical planarization (CMP)
… (CMP) slurries. In CMP, the formation of large agglomerates is of great concern, as these large particles are associated with high defectivity and poor polishing performance. The proposed model describes the complex CMP slurry system as a colloid under high non-linear shear conditions. The model …
-
Mixing of nanosize particles by magnetically assisted impaction techniques
… area, nano-particles form very large, fractal agglomerates. The structure of these agglomerates can have a large agglomerate composed of subagglomerates (SA), which itself consists of primary agglomerates (PA), that contain chain or net like nano-particle structures; typically sub-micron size. …
-
Charge Interaction Effects in Epoxy with Cation Exchanged Montmorillonite Clay and Carbon Nanotubes.
… montmorillonite clay were found to form agglomerates near a critical concentration. Using differential scanning calorimetry it was determined that the mixing temperature of the epoxy + MLS mixture prior to the addition of the curing agent critically influenced the formation of the …
-
Hydrometallurgical Processing Of Rare Earth Elements From Ion Adsorption Clays
… Earth leaching from Clay ore with the use of agglomerates that improve the permeability of the ore during heap leaching operation. The practice of in-situ leaching has also revealed serious environmental problems including underground contamination, mine collapses, and landslides. The …
-
Processing of Low Rank Coal and Ultrafine Particle Processing by Hydrophobic-Hydrophilic Separation (HHS)
… siliceous gangue dispersed in aqueous phase. The agglomerates were then separated from dispersed gangue minerals by screening and the agglomerates dispersed in a hydrophobic liquid (n-pentane) to liberate the water trapped in the agglomerates. The chalcopyrite dispersed in the hydrophobic liquid …
-
Dissolved air (pressure) flotation
… interface between the clear liquid and rising agglomerates. The accumulated agglomerates discharge freely and without mechanical assistance at the top of the unit.
Page 1 of 6