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 66 for “"o/w"”.
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Functionality And Role Of Different Fatty Alcohols In Topical O/W Cream Formulation
Fatty alcohols are excipients that are abundantly used in various pharmaceutical formulations. The objective of the present study was to evaluate the impact of incorporating different fatty alcohols on microstructural and formulation characteristics of topical o/w clotrimazole cream formulation. …
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Metal oxide modified tubular ceramic membrane for the separation of oil-in-water emulsion.
Separating lower concentrations of oil-in-water (O/W) emulsion (< 250 mg/l) and smaller oil droplet size (< 20 μm) has been an industry challenge using conventional methods, including adsorption, electrocoagulation, flocculation, bioremediation, centrifugation, membranes, etc. This is mostly due to …
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A Comparison of Ultraviolet Light and White Light in the Detection of Adhesive During Orthodontic Debonding: An In-Vitro Study
Purpose: To assess the accuracy and efficiency of UV illumination compared to conventional white light in the detection of adhesive during orthodontic debonding.Materials and Methods: A pilot investigation was first done to evaluate different orthodontic adhesives for inclusion in the main study. …
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Application of Argon Plasma Technology to Hydrophobic and Hydrophilic Microdroplet Generation in PDMS Microfluidic Devices
<p>Abstract Application of Argon Plasma Technology to Hydrophobic and Hydrophilic Microdroplet Generation in PDMS Microfluidic Devices Brennan Graham Microfluidics has gained popularity over the last decade due to the ability to replace many large, expensive laboratory processes with small handheld …
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Fabrication and characterization of nano-engineered membranes for oil-water separation
The focus of this thesis is the design and testing of membranes for separation of water-in- oil (w/o) emulsions. A polycarbonate membrane treated with octadecyltrichlorosilane (OTS) is used to filter a 3 wt% w/o emulsion. The permeate is characterized to have no measurable water content by …
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Effects of Xanthan/Locust Bean Gum Mixtures on the Physicochemical Properties and Oxidative Stability of Whey Protein Stabilized Oil-In-Water Emulsions
<p>Scientific evidence shows that dietary intake of the omega-3 polyunsaturated fatty acids is beneficial to human health. Fish oil is a rich source of omega-3 fatty acids. However, fish oil with high levels of omega-3 PUFA is very susceptible to oxidative deterioration during storage. The …
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Synthesis and comprehensive studies of nanogels for enhanced oil recovery
“Nanomaterials have been developed and applied for enhanced oil recovery (EOR) in oil industry. Among the developed nanomaterials, nano-sized crosslinked polymeric gel particles (nanogels) have shown the potential in improving both the macro- and micro-displacing efficiency. This dissertation …
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Production of emulsions with controlled droplet size containing bioactive compounds using membranes
En el presente trabajo, se han preparado emulsiones simples y dobles, de interés en la industria alimentaria, farmacéutica y cosmética, conteniendo biocompuestos con capacidad antioxidante, tanto de carácter lipófilo (luteína), como hidrófilo (resveratrol). Para ello, se utilizaron diferentes …
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Use of nanoemulsion liquid chromatography (NELC) for the analysis of inhaled drugs. Investigation into the application of oil-in-water nanoemulsion as mobile phase for determination of inhaled drugs in dosage forms and in clinical samples.
There has been very little research into the bioanalytical application of Microemulsion High Performance Liquid Chromatography (MELC), a recently established technique for separating an active pharmaceutical ingredient from its related substances and for determining the quantity of active drug in a …
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Cellulose Nanocrystals as 'Green' Emulsifiers Stabilized Crude Oil in Water Emulsions
This study examines the ability of CNC to stabilize crude o/w Pickering emulsions. The effects of concentration of CNC, ionic strength of the aqueous phase, volume fraction of crude oil to water, and the presence of divalent ions on the stability of crude o/w emulsions were examined. Emulsions …
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Freisetzungsverhalten von unterschiedlich hydrophil/hydrophoben Modellsubstanzen aus Poly-(D,L-lactid)- und Poly-(D,L-lactid)-co-PEO-co-poly-(D,L-lactid)-Mikrosphären und pharmazeutische Anwendungen
Within the scope of this dissertation, the release behaviour of different model substances and drugs from degradable poly-(D,L-lactide) (PDLLA) and poly-(D,L-lactide)-co-PEO-co-poly-(D,L-lactide) (ABA) microspheres as well as poly-(D,L-lactide-co-TMC)(90:10) nanospheres in PBS-buffer are …
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Diffusion of proteins inside crowded structures generated using microemulsions
Microemulsions are thermodynamically stable mixtures of water, oil and surfactant. In the case of microemulsions based on sugar surfactants a cosurfactant as an additional component is necessary, most often a short-chain alcohol. In this thesis mainly pure surfactants are used. The focus is on …
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IN VITRO ΜΕΛΕΤΗ ΤΗΣ ΑΠΟΔΕΣΜΕΥΣΗΣ ΤΩΝ ΑΝΤΙΡΡΕΥΜΑΤΙΚΩΝ ΦΑΡΜΑΚΩΝ: ΦΑΙΝΥΛΟΒΟΥΤΑΖΟΝΗΣ, ΝΑΠΡΟΞΕΝΗΣ, ΝΑΤΡΙΟΥΧΟΥ ΝΑΠΡΟΞΕΝΗΣ ΚΑΙ ΝΑΤΡΙΟΥΧΟΥ ΤΟΛΜΕΤΙΝ...
THE IN VITRO RELEASE OF THE ANTI-INFLAMMATORY DRUGS FROM OINTMENT BASES WAS STUDIED USING THE SARTORIUS ABSORPTION SIMULATOR. THE AMOUNT OF DRUG RELEASED DEPENDED ON THE COMPOSITION OF THE VEHICLE. THE RATE OF RELEASE INCREASED IN THE FOLLOWING ORDER: OINTMENT<W/O EMULSION<O/W EMULSION<GEL. THE …
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A finite characterization of K-matrices in dimensions less than four
The class of real nxn matrices M, known as K-matrices, for t which the linear complementarity problem w-Mz=q, w≥O, z≥O, w<sup>t</sup>z=O has a solution whenever w-Mz=q, w≥O, z≥O has a solution is characterized for dimensions n<4. The characterization is finite and"practical". Several necessary …
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Modification of nanoparticle surfaces for emulsion stabilization and encapsulation of active molecules for anti-corrosive coatings
Within this work, three physicochemical methods for the hydrophobization of initially hydrophilic solid particles are investigated. The modified particles are then used for the stabilization of oil-in-water (o/w) emulsions. For all introduced methods electrostatic interactions between strongly or …
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Preparation of emulsifiers from pea and corn starches using octenyl succinic anhydride modification
The objective of this thesis research was to modify pea starch – a representative pulse starch – using octenyl succinic anhydride (OSA) to prepare emulsifiers for enhanced industrial utilization. Pea starch (PS), normal corn starch (NCS), and waxy corn starch (WCS) were modified with 1%, 3% and 5% …
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Micropropagation of Paraserianthes falcataria
Paraserianthes falcataria is a tropical, deciduous, leguminous tree. It is native to Papua N e w Guinea, West Irian, The Soloman Islands and The Moluccas. It is n o w widely grown in plantations of Philippines, Fiji, Asia, Australia and parts of America. The focus of this study was to establish …
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Studies on selected physicochemical properties and microstructure of β-casein-enriched ingredients for applications in formulated nutritional products
The milk protein β-casein (β-CN) possesses excellent functional properties and is the most abundant casein in human milk. Therefore, β-CN has the potential to be used as an ingredient in nutritional food applications, in particular in infant formulae (IF). However, the manufacture of β-CN products …
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Design and synthesis of microcapsules using microfluidics for autonomic self-healing in cementitious materials
A capsule-based self-healing cementitious material, capable of autonomically repairing its own cracks, can extend the service life of concrete structures and decrease the costs associate with repair and maintenance actions. However, the size, shell thickness, shell material and mechanical …
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