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 60 for “"MMT"”.
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Automatic verification of the timing properties of MMT automata
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Experiences and satisfaction with methadone maintenance treatment (MMT) health services: views from a small Ontario city
… of Canadians. Methadone Maintenance Treatment (MMT) is considered the gold standard in Canada, and the world, for treating opiate dependence. In the past, Canadian research into opiate addiction and the effectiveness of MMT has mostly focused on larger cities: Toronto, Montreal, and Vancouver. …
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Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
… polycaprolactone (PCL) filled montmorillonite (MMT) and Hydroxyapaptite (HA) composites were prepared by melting and compounding using a single screw extruder. The mechanical properties were assessed by tensile, flexural and charpy impact tests while the thermal properties were studied via …
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"I Was Not Sick and I Didn't Need to Recover": Methadone Maintenance Treatment (MMT) as a Refuge from Criminalization
<p>Methadone Maintenance Treatment (MMT) has been undergoing a cultural and epistemological shift away from an approach that emphasized client stabilization and a reduction of social harms towards one grounded in values associated with the recovery movement. These changes include promoting a view …
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Polyamide-imide and Montmorillonite Nanocomposites
… effect that the introduction of montmorillonite (MMT) has on PAI. MMT was introduced into an uncured PAI suspension; the sample was then cured by step-wise heat treatment. Polarized optical microscopy was used to choose the best suitable MMT for PAI matrix and to study the distribution of MMT in …
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Polymer/clay nanocomposite hydrogels with anisotropic properties
… polyacrylamide/montmorillonite-iron oxide (PAAm/MMT-IO), and poly(N-isopropylacrylamide)/MMT-IO (PNIPAM/MMT-IO) nanocomposite hydrogels prepared via low magnetic fields showing anisotropic mechanical properties. The magnetic field was studied as the parameter that produces anisotropy by …
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Mobile Money and Financial Inclusion: Evidence from Lesotho
… (MMA) and volumes of mobile money transactions (MMT) are regressed against financial inclusion to investigate the relationship with each. The results indicate that among the three proxies of mobile money, only two have a relationship with financial inclusion: MMC and MMT. MMA does not show any …
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The Effect of Matrix Molecular Weight on the Dispersion of Nanoclay in Unmodified High Density Polyethylene
… dispersion of relatively polar montmorillonite (MMT) in non polar, unmodified high density polyethylene (HDPE) was examined. Polymer layered silicate (PLS) nanocomposites were compounded using three unmodified HDPE matrices of differing molecular weight and an organically modified MMT in …
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Extraction of Heavy Metals from Aqueous Solutions using Chitosan/Montmorillonite Hybrid Hydrogels
… Novel chitosan (CTS)/ montmorillonite (MMT) hybrid hydrogels have been successfully developed by freeze-drying technique. The morphology of the hydrogels is observed to be porous and the existence of reactive ligands for chelation is confirmed, The stability of the hydrogels is improved …
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Tomographic Reconstruction of Wavefront Aberrations using Multiple Laser Guide Stars
… of reconstruction matrices used on-sky at the MMT telescope.The specific reconstruction techniques of ground layer adaptive optics and laser tomography adaptive optics using MLGS are presented along with the results of on-sky experiments at the MMT. In addition to developing a laser AO …
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Functionalization of nanoclays through exchange reactions
A cationic clay (sodium-montmorillonite, MMT) and an anionic clay (hydrotalcite, HT) were treated with two phosphonium based ionic liquids (ILs) and a commercial corrosion inhibitor. Clay modification was examined by TGA, FTLR and WXRD. The cationic clay modified with both ILs had similar thermal …
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The Manufacture and Mechanical Properties of Poly(ethylene terephthalate) Fibers Filled with Organically-Modified Montmorillonite
… on PET fibers filled with montmorillonite (MMT) nanoclay examined fiber drawability at temperatures above the glass transition. Therefore, the primary objective of this research was to determine 1) if PET nanocomposite fibers could be drawn to finer diameters and 2) whether drawing imparted …
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Study of controlled release of dapsone from modified montmorillonite and polymer matrices
… (API) intercalated into sodium montmorillonite (MMT-Na+) and their combination with an anionic copolymer (Eudragit S100). The effects of the excipients on the API dissolution rate were studied from their release profile in simulated intestinal fluid (pH=7.4) at 37+/-0.5 C. In the first part of …
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The effect of nanoclays on the properties of aspirin modified enteric polymer prepared by hot-melt mixing
… with a cationic API and an anionic nanoclay. MMT is present in an agglomerated phase in all nanocomposites. The CAF release in the pH 7.4 medium from CAF/MMT/Eudragit L100-55 is slightly slower compared to CAF/Eudragit L100-55. Therefore, the agglomeration of MMT does not significantly retard …
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Fundamental Studies of Various Poly(L-lactide)/clay Nanocomposite Systems by in-situ Polymerization
… using various montmorillonite organoclays (PLLA-MMT). When using tin (Il) 2-ethylhexanoate (Sn(Oct)2) as the catalyst, the reaction is believed to initiate from stannous alkoxides, formed from hydroxide (-OH) groups present in the reagents. Several quaternary ammoniums were ion-exchanged onto the …
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Estudio de nanocompuestos basados en polietileno y montmorillonita
… de esta familia se destaca la montmorillonita (MMT). El objetivo principal de esta Tesis es preparar nanocompues-tos basados en polietileno de alta densidad (PE) y MMT por mezclado en fundido con el propósito de modificar algunas de las propiedades del polímero de manera de mejorar su …
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Elastocaloric properties of Natural Rubber for Solid-State Cooling Technologies
… second part, the effect of adding both natural (MMT) and organo-modified (O-MMT) nanoclays to the most promising formulation identified in the first part of the work was assessed. Two series of NR-based nanocomposites, containing 1, 3 and 5 phr nanofiller, were prepared and characterized in terms …
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Synthesis and characterization of polymer nanocomposites
… as hydrotalcite (HT), sodium montmorillonite (MMT), single wall carbon nanotubes (SWNT) and fullerenes (FUL), at 5 and 10 wt% loading. Structural characteristics and mechanical, thermal and barrier properties of the nanocomposites were characterized by different techniques and compared to those …
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A Pre-Feasibility Assessment of Geologic CO₂ Storage, Offshore Corpus Christi
… Simulation results storing CO2 at a rate of 1 MMT/year and 1.7 MMT/year show two potential injection rates that could be safe for storage over a 30-year period. We hope this pre-feasibility study encourages further studies in the offshore Corpus Christi region.
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An exploration of the process of recovery from heroin dependence
… receiving methadone maintenance treatment (MMT) are explored using a qualitative methodology. The study focuses on how clients perceive their recovery process and the role of MMT and drug services. The results of the interpretative phenomenological analysis are stated and the main themes …
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