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 49 for “"IFT"”.
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Experimental investigation of imbibition in oil-wet carbonates under low IFT conditions
… wettability and reducing interfacial tension (IFT). The main purpose of this research was to determine how to scale up low IFT surfactant imbibition from the lab to fractured, oil-wet carbonate reservoirs. A series of imbibition experiments were conducted using cores with different horizontal …
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Towards structural characterisation of ciliary rootlets, ciliary caps and intraflagellar transport
… a process called intraflagellar transport (IFT). IFT is driven by multiple copies of the ciliary motor proteins kinesin-2 and dynein-2 attached to train-like assemblies of IFT-A and IFT-B protein subcomplexes. Kinesin-2 transports IFT-trains along a microtubule-based ciliary cytoskeleton …
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Investigations into implementation of an iterative feedback tuning algorithm into microcontroller
Implementation of an Iterative Feedback Tuning (IFT) and Myopic Unfalsified Control (MUC) Algorithm into microcontroller is investigated in this dissertation. Motivation in carrying out this research emanates from successful results obtained in application of IFT algorithm to various physical …
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Use of Cholera Toxin B as a Vaccine Adjuvant Activates Antigen Presenting Cells and Stimulates Production of Pro-Inflammatory Cytokines
… of inactivated <em>F. tularensis</em> (<em>iFt</em>) adjuvanted with Cholera toxin “B” (CTB), successfully granted full protection against a less virulent strain (<em>FT LVS</em>) of the bacterium and provided partial protection against a more virulent strain (SchuS4). However, the …
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The role of intraflagellar transport during the disassembly of the Leishmania mexicana flagellum
… large reduction in the intraflagellar transport (IFT) system can lead to flagellum disassembly in Leishmania. However, it is not clear how or when the IFT system changes during this disassembly process. Here, we show that the flagellum disassembly is associated with a large drop in IFT numbers and …
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Investigation into iterative feedback control
The Iterative Feedback Tuning (IFT) method is investigated in this dissertation, starting with the history and origin of this algorithm. The objective of this thesis was to apply the IFT algorithm to a physical system and the system chosen was a DC motor configured for speed control. The inertia of …
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Diskrepanzen in der CMV-Serologie : serologische Evaluation mit möglichen Konsequenzen für die Transplantationsmedizin
… mithilfe eines kommerziellen CMV-IFT unterzogen, bei dem infizierte und nicht-infizierte Zellen gemischt vorliegen und damit eine deutliche Differenzierung zwischen positiven, negativen und unspezifischen Reaktionen ermöglichen. <br>Es zeigt sich, daß ELISA-positive Seren zu 98% …
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The internal performance of iterative feedback tuning
… certain conditions Iterative Feedback Tuning (IFT) may produce a controller that cancels the poles of the process and as a result can give a closed loop that has poor internal performance. The disadvantage of this is that the closed loop will have poor input disturbance rejection. A solution …
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Solid-liquid-liquid Wettability and its role on Targeted Emulsified Solvent Injection (TESI)
… and producing an ultralow interfacial tension (IFT). According to a known theory of capillary displacement, the ultralow IFT should facilitate bitumen removal via shear forces. A gap in this theory was addressed, concerning the effect of surfactants on wettability and its potential impact on …
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Experimental investigation of the effect of nanoparticles and polymer on interfacial tension between oil and water during Enhanced Oil Recovery (EOR)
… investigates the interfacial tension (IFT) of silica/gum-Arabic) in the presence brine at different temperature to enhanced and improve oil recovery. The study also investigate experimentally the pH value of brine and in combination with nanoparticles and polymer for liquid …
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Role of WDR35 in the formation of functional cilia
… Once inside the cilia intraflagellar transport (IFT) proteins move the cargo along microtubules ‘railways’ of the axoneme. IFTs are known to assemble in two protein complexes, IFTA and IFTB protein complexes. IFT-B complex known to be made of 16 different proteins mediate anterograde transport …
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Immunogenität translozierter Effektorproteine bei Infektionen mit Bartonella henselae
… Verfahren werden Immunfluoreszenztest (IFT), Polymerasenkettenreaktion (PCR) und die Histopathologie eingesetzt. Bisherige Versuche, einen sensitiven und spezifischen Western Blot zur Diagnostik einer B. henselae-Infektion aufzubauen, scheiterten an der mangelnden Immundominanz der …
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Impacts of the EC 1992 single market on international marketing activities of American interior furnishing textile manufacturers
… of eight US interior furnishing textile (IFT) manufacturers who market to the EC, and to determine their perceptions of how the creation of the EC 1992 Single Market would affect their future marketing strategies and market potential. The case study method, i.e., personal interviews, was …
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Experimental investigation of interfacial tension in two-phase system involving methane and water
… system. Viscosity and interfacial tension (IFT) are among the fluid properties that affect fluid behaviour. These properties have significant effects on fluid flow characteristics, and thus their importance in oil and gas production and processing aspects from the reservoir to other surface …
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Mechanisms Involved in Enhanced Protection Against Gram Negative Bacterium Francisella tularensis Utilizing an FcR Targeted Vaccine Platform
… that targeting inactivated F. tularensis (iFt) to Fcγ receptors (FcγRs) via intranasal immunization with mAb-iFt complexes reverses the anti-inflammatory effects of the bacterium on macrophages by ix down-regulating production of IL-10 and mediates generation of F. tularensis-specific, …
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A Field Investigation of Implicit Theory Congruence in Leader-Follower Relationships
… theories of leadership (ILTs) and followership (IFTs) in both partners' perspectives of the leader-follower relationship. While most literature focuses on assessments of the leader-member exchange (LMX) relationship, this study examined perceived support, identification with one's partner, and …
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Surfactant enhanced mobilisation of non-aqueous phase liquids
… relies on the reduction of interfacial tension (IFT) at the flushing solution/NAPL interface. The conditions governing mobilisation can be represented by the total trapping number (N T ), a dimensionless quantity relating viscous and buoyancy forces to the capillary forces trapping the NAPL …
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A 12-month retrospective descriptive analysis of a single helicopter emergency medical service operator in four South-African provinces
… (203 primary cases, 713 interfacility transport (IFT)). The majority of the patients were male (n=548, 59.8%), suffered blunt trauma (n=379, 41.4%) followed by medical pathology (n=247, 27%) and neonatal transfers (n=184, 20.1%). Most flights occurred in daylight hours (n=729, 79.6%). Median …
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Extremal Problems in Graph Theory: Hamiltonicity, Minimum Vertex -Diameter -2 -Critical Graphs and Decomposition
… with the t-star property. We prove that ift≥3and k≥68+t,then ft,k ≥32˙2 tk+25-10t ˙2t-2-3. .
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Device-type Profiling using Packet Inter-Arrival Time for Network Access Control
… a novel Intelligent Filtering Technique (IFT) that uses packet Inter-Arrival Time (IAT) data for smartphones, tablets and laptops to profile and identify abnormal patterns based on device-types. The IFT is composed of three data mining algorithms, namely K-means clustering, …
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