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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 209 for “"non-polar"”.
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Development of Iii-Nitride Non-Polar Leds and Self-Aligned Laser Structure
<p>Light Emitting Diodes (LEDs) are finding numerous applications in several commercial systems because they have unique properties. LEDs are more energy efficient, robust, small in size, very reliable and are sustainable in hazardous environmental conditions making them a good substitute for …
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Characterisation of polar (0001) and non-polar (11-20) ultraviolet nitride semiconductors
… of a range of UV structures, including c-plane (polar) AlGaN epilayers grown on AlN template, and nonpolar GaN/AlGaN MQWs grown on a-plane GaN template. The results are based primarily on transmission electron microscopy (TEM), cathodoluminescence in the scanning electron microscope (SEM-CL), …
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Introduction of a thermo-sensitive non-polar species into polyelectrolyte multilayer capsules for drug delivery
The layer-by-layer assembly (LBL) of polyelectrolytes has been extensively studied for the preparation of ultrathin films due to the versatility of the build-up process. The control of the permeability of these layers is particularly important as there are potential drug delivery applications. …
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Energy Transfer Dynamics in Collisions of Polar and Non-polar Gases with Functionalized Self-Assembled Monolayers
Molecular beam scattering experiments are used to investigate the extent of thermal accommodation of Ne, CD4, ND3, and D2O in collisions with long chain CH3, NH2, and OH terminated self-assembled monolayers (SAMs) on gold. Surface rigidity, internal degrees of freedom of the impinging gas, and …
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Part One: Catalytic Reactions of Anion-Exchange Resin Bound Dodecarhodium Triacontacarbonyl Dianion and Its Derivatives and Part Two: Properties and Reactions of Neutral Non-Polar Solvent Soluble Binuclear Complexes
The resin support was the Dowes 1-X8 anion exchange resin in the chloride form. Exchange of the cluster at room temperature under an inert atmosphere leads to intact Rh(,12) (CO)(,30)('2-) being bound. This material exhibits only limited activity for the hydroformylation of of 1-hexene, accompanied …
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Solvent-induced modifications of the morphology and solid-state properties of ibuprofen
… techniques indicated that crystals grown from non--polar solvents were more strained. In conjunction with solution NMR results (which showed differences in molecular association in solvents of varying polarity) this led to two different growth mechanisms being proposed. The crystal structure of …
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ΕΝΔΟΜΟΡΙΑΚΗ ΦΩΤΟΚΥΚΛΟΠΟΙΗΣΗ ΤΗΣ ΚΑΡΒΟΝΗΣ ΠΡΟΣ ΚΑΡΒΟΝΟΚΑΜΦΟΡΑ
… (2) (TYPE) HAVE BEEN DETERMINED IN NON POLAR AND POLAR SOLVENTS, UNDER NITROGEN AND IN AIR-EQUILIBRATED SOLUTIONS. QUENCHING BY OXYGEN HAS BEEN OBSERVED ONLY IN NON POLAR SOLVENTS, BENZENE 01 --> 2=0.0025 UNDER NITROGEN AND 0.0012 IN AIR-EQUILIBRATED SOLUTIONS. SENSITIZATION …
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Development of a Novel Fine Coal Cleaning and Dewatering Technology
… The first stage of the process uses immiscible non-polar liquids, such as straight chain hydrocarbons, to selectively agglomerate fine coal particles in an aqueous medium. The agglomerates are then passed second stage of processing where mild agitation is used to disperse and fully engulf …
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Synand characterisation of silicone based mesophase forming materials.
… undergo a step-wise melting process, with the non-polar and the oolar moieties dominating the low and the high temperature transitions, respectively. The behaviour of different molecules can be explained by reference to the nature of the respective polar and non-polar moieties.The aqueous …
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The Edge States of Epitaxial Graphene on SiC
… crystal faces on SiC, including the Si-face and non-polar facets. We introduce novel fabrication process flows that have high temperature annealing and Al2O3 as a protective layer to reduce the edge roughness of ribbons and the contamination from resist residue. Then we discuss transport …
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A Multifrequency Phase and Modulation Lifetime Analysis of Solvent Relaxation and Protein Dynamics (Papain, Bovine, Serum, Albumin)
… been carried out, one with conjugates of the polar, biological label, dansylaziridine; and the other with two non-polar molecules, triphenylene and anthracene.
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Mathematical Modelling of Semi Conductor Devices and Processes
… considered: the type of scatterers, whether non-polar optical, piezoelectric or acoustic phonons, the presence or absence of an electric field and the order of expansion of the collision integral in terms of the phonon energy. Restricted cases of this equation are considered and general …
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Pseudostationary Phase for Solid Phase Extraction
… bonded alkyl moieties on silica based non-polar sorbents. Although hydrophobic analytes can be efficiently trapped on commercially available non-polar sorbents (i.e. Ci8 silica), organic solvents that are necessary to break strong hydrophobic interactions between the analytes and the …
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Identification of soybean, Glycine max (L.) Merr., cytokinins
… The fractions separated on the basis of polarity into polar, moderately polar and relatively non-polar groups, compared to zeatin. The polar fraction was the single most bioactive fraction and the active substance was tentatively identified as a zeatin glucoside or zeatin riboside …
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Interactions of Nitrated Aromatics With Electron Rich Species: Chiral and Achiral
… the negatively charged Meisenheimer complexes in non-polar organic solvents. The gained mechanistic insight allowed the development of the first enantioselective nucleophilic aromatic substitution reactions.
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Sorption and desorption of the industrial chemical MCHM into polymer pipes, liners and activated carbon
… carbon (GAC). Experiments for sorption of non-polar toluene and polar 1-butanol were conducted as a comparison for MCHM sorption. Additionally, a brief odor analysis was done on the ability of activated carbon to remove odor from contaminated water and on leaching of MCHM from pipe material …
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Metabolic Profiling of Genetically Modified Potato Periderm Tissues
… carboxyl ester bonds with aliphatic monomers and non-ester radical-coupled bonds with phenolics. Ferulic acid also links by ester bonds to glycans and acts in cross-linking polysaccharides and lignin. Fatty alcohol/ω-hydroxyacid hydroxycinnamoyl transferase (FHT) is a BADH acyltransferase …
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