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 22 for “"NGI"”.
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Development and Evaluation of a Small Volume Liquid Impaction Surface (SVLIS) in the Next Generation Impactor (NGI)
… 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 inhaled powders following aerosolization.|A custom SVLIS was …
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Creation and validation of an enhanced in vitro model of the lungs
… collection cups of the Next Generation Impactor (NGI) to allow incorporation of bacterial cultures for evaluation of formulation efficacy. The regular collection cup in the stage 4 of the NGI was replaced with a deep collection cup for incorporating bacterial cultures without affecting the …
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Kuli ngi daw = (La force sacrée du mil) : de la religion du mil à l'Eucharistie chrétienne chez les Gizigas du Nord Cameroun.
… et comme de bouleverser par la force de l'Évangile les critères de jugement, les valeurs déterminantes, les points d'intérêt, les lignes de pensée, les sources inspiratrices et les modèles de vie de l'humanidessein du salut" (E.N.19). L'hypothèse de cette recherche, c'est qu'il importe de …
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Assessing the accuracy of openstreetmap data in south africa for the purpose of integrating it with authoritative data
… National Geo- Spatial Information (CD: NGI) is looking to this volunteer information to maintain their topographical database; however, the main concern is the quality of the data. The purpose of this work is to assess whether it is feasible to use VGI to update the CD: NGI topographical …
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Modification of the Next Generation Impactor and Incorporation of Bacterial Cultures as an In Vitro Pneumonia Model
… incorporated into the Next Generation Impactor (NGI). This model allowed for the correlation of deposition and aerodynamic parameters of an antibiotic solution and antibacterial effects. Amberlite® beads were incorporated into the model to absorb the antibiotic so that time kill studies could be …
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The development of a method for semi-automatic classification of built-up areas from aerial imagery
… of National Geospatial Information (CD: NGI), South Africa’s national mapping agency, currently relies on manual methods for digitizing features and detecting changes. These methods are time consuming and labour intensive, and rely on the skills and interpretation of the operator. It is …
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Performance of two different types of inhalers. Influence of flow and spacer on emitted dose and aerodynamic characterisation.
… (ACI) and the next generation cascade impactor (NGI). In all aerodynamic characterisations, the differences between flow rates 28.3 and 60 were statistically significant in formoterol, budesonide R and budesonide S, while the differences between ACI and NGI at 60 were not statistically …
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Προσδιορισμός δομής, διαμορφωτικές ιδιότητες και ανακάλυψη πιθανών στόχων του παραγώγου του κινναμωμικού οξέος NGI25
… κινναμαμίδης (NGI25) πραγματοποιήθηκε μέσω φασματοσκοπίας πυρηνικού μαγνητικού συντονισμού (NMR), μοριακής δυναμικής (MD) και κβαντικής μηχανικής (QM), δηλαδή ημιεμπειρικούς υπολογισμούς και υπολογισμούς πυκνότητας λειτουργικής θεωρίας (DFT). Επιπλέον, …
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Relative bioavailability of terbutaline to the lungs following inhalation using different methods.
… methodology and the Next Generation Impactor (NGI) methodology. The Aeroneb Pro was found to have significantly better aerodynamic properties than the Sidestream. The results from the NGI method were significantly different from the CEN method suggesting further evaluation of both methods. …
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Terrestrial radio wave propagation at millimeter-wave frequencies
… are studied for Next Generation Internet (NGI) applications. The research mainly focuses on the characterization of space-time channel structure. Multipath components are resolved both in time of arrival (TOA) and angle of arrival (AOA). Results show an excellent correlation between the …
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Basal Stability of Braced Circular Excavations in Isotropic and Anisotropic Clays
… excavation. In the next phase of the study, the NGI-ADP anisotropic strength model was utilized. In this set of analyses, the anisotropy ratio (SuP/SuA), strength gradient (kH/Suo), initial mobilization ratio (τ₀/SuA) and Rint were identified as the key factors. Across a broad range of H/B …
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Development of a Dry Powder Inhaler and Nebulised Nanoparticle-Based Formulations of Curcuminoids for the Potential Treatment of Lung Cancer. Development of Drug Delivery Formulations of Curcuminoids to the Lungs using Air Jet Milling and Sonocrystallisation Techniques for Dry Powder Inhaler Preparations; and Nanoemulsion and Microsuspension for Nebuliser Formulations
… were measured individually using NGI. The size, shape, free surface energy, and the crystal polymorphism of the produced inhalable curcuminoid particles were characterised using laser diffraction, SEM, IGC, DSC and XRPD, respectively. Several DPI formulations with a variable …
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Cost optimization and routing for satellite network constellations
… become part of the Next Generation Internet (NGI), a global heterogeneous network that provides ubiquitous access to every part of the world. Nevertheless, very little research has been done on the cost aspect of a satellite network. In this thesis, uplink and downlink costs are ignored and a …
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Context-Aware and Real-time Entrustment Framework for Securing Next Generation Internet Communications
… providing security services for the futuristic NGI communication trends. We then introduce a new approach in empirical analysis for cryptographic functions through which their use of computation resource can be identified and/or predicted. The outcome of this approach is applied in designing a …
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Characterisation of Aerosols Generated by Pressurised Metered Dose Inhalers
… techniques.<br/>The next generation impactor (NGI) experiments revealed the importance of actu-ation forces on the throat deposition. Automated actuation forces with high valve opening rates led to a lower throat deposition than a manual actuation force with low valve opening rate.
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The behaviour of clay in simple shear and triaxial tests
… Laboratory tests were conducted using the NGI simple shear apparatus, standard shear box arid computer controlled stress path testing equipment for samples with38 mm and 100 mm diameter. The test programme comprised simple shear and shear box tests on remouled, reconstituted and undisturbed …
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Preparation and characterization of multifunctional chitosan microparticles for lung delivery
… testing of the prepared microparticles on the NGI suggested that the microparticles have a polydisperse population with a fine particle fraction of 47.5%. The application of RF exposure for 500 seconds shows a linear increase in temperature with increase in exposure time. The in vitro release …
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Development of Aerosolizable mRNA Incorporated Chitosan Nanoparticles for Efficient Lung Delivery
… was performed using a Next-generation impactor (NGI). The aerodynamic characterization revealed that formulations had an optimal aerodynamic diameter between 1-5μm. Other properties like fine particle fraction and geometric standard deviation could be improved by optimizing the nebulization …
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Engineering of Inhalation Aerosols Combining Theophylline and Budesonide
… the spray drying and ultrasonic process for engineering of combination drug particles that will be delivered more efficiently and independently of dose variations to the lung. Microparticles were produced by spray drying or/and ultrasonic technique. The processing parameters and addition of …
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On IP over WDM burst-switched long haul and metropolitan area networks
… for the Next Generation Internet (NGJ). While NGI targets to perform packet processing directly on the optical transport layer, a smooth evolution is critical to success. Intense research has been conducted to design the new generation optical networks that retain the advantages of …
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