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 258 for “"Shunt"”.
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Advantages of MesoRex shunt compared with distal splenorenal shunt for extrahepatic portal vein occlusion in children
… primarily surgical, with surgical portosystemic shunting representing a safe and effective method for the long-term management of portal hypertension in the paediatric population. Although different shunts have been proposed for EHPVO, both the MesoRex shunt and distal splenorenal shunt have …
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The stability of a D.C. shunt motor.
Abstract not available.
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Fault Location in High Voltage Shunt Capacitor Banks
High Voltage Shunt Capacitor Banks (HV-SCBs) are critical substation assets that are primarily used to improve power factor and thus power transmission capability. Over temperature, over voltages, manufacturing defects can cause internal failures of capacitor elements. With today’s sensitive …
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Parents' management of their child's hydrocephalus and shunt
Introduction Shunts are the main treatment for hydrocephalus. When shunts malfunction the consequences are serious and can be life threatening. Identifying shunt malfunction requires effective parent-professional collaboration: parents need to recognise and respond appropriately to the symptoms of …
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ESTIMATING LOCATIONS OF SHUNT FAULTS ON DISTRIBUTION LINES
… estimating the locations of transmission line shunt faults has been to measure the apparent impedance to the fault from a line terminal and convert the reactive component of the impedance to the line length. Several methods, that use the fundamental frequency voltages and currents measured at …
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The protection of high-voltage shunt capacitor banks
The use of shunt capacitor bank equipment is essential if a utility wishes to control the flow of reactive power effectively. The most significant results stemming from this will be lower losses on the system and an increased power transfer capability. Thus it is important that the methods used to …
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High power shunt regulation of spacecraft solar arrays
The operation of the basic shunt system for solar arrays is considered. The system is analyzed for stability with a constant power load. The implications of using switching type shunt elements for high power outputs are investigated. The input filter is shown to affect the closed loop design of the …
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Ventriculoperitoneal Shunt Failures At Red Cross War Memorial Children's Hospital
Introduction Ventriculoperitoneal shunt (VP shunt) insertion is one of the mainstays of treatment of hydrocephalus and although very effective, a high rate of shunt failure persists globally. The purpose of the study was to quantify the ventriculoperitoneal shunt failure rate at Red Cross War …
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Biocompatibility assessment of a sol-gel modified electrospun ventricular shunt catheter
… treat this condition involves the insertion of a shunt catheter to bypass the blockage and allow the CSFto flow from the ventricles, thus avoiding a possible build-up of intracranial pressure. Such catheters, which are commonly made frommedical grade silicone, are known to be affected by …
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Functional and mathematical analysis of the glyoxylate shunt in Streptomyces coelicolor
… on work done in Escherichia coli, the glyoxylate shunt was thought to be the main anapleurotic pathway in S. coelicolor during growth on fatty acids and therefore an important pathway in providing precursors for secondary metabolism. The S. coelicolor genome contains genes for a second …
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Simulation of voltage source converter based shunt active filter in EMTP‐RV
… models a Voltage Source Converter (VSC) based shunt active filter (SAF) to filter harmonics due to large non linear loads. SAF compensates the harmonics by injecting a compensating current which is equal in magnitude but opposite in phase to the disturbance in the system. The power circuit of …
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Predicting the response to ventriculoperitoneal shunt in patients with Normal Pressure Hydrocephalus
… (ELD) in identifying those who may respond to a shunt and to compare the outcomes with the non-shunted patients at one year. Method: Forty patients with a clinical diagnosis of NPH were prospectively studied according to a fixed management protocol. Resistance to CSF (Rcsf) was measured using a …
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Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested
A large utility was experiencing a problem when switching a two-stage capacitor bank resulting in misoperations of the bank protection. When the bypass switch is opened a long duration dc offset occurs across all capacitors. This dc causes saturation of the tap point VT resulting in a false …
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The glyoxylate shunt as a target for antibacterial intervention in Pseudomonas aeruginosa
… A for biomass production via the glyoxylate shunt. The glyoxylate shunt is comprised of two enzymes: isocitrate lyase and malate synthase G, and allows the synthesis of cellular constituents from C2 nutrient sources, bypassing the decarboxylation steps of the citric acid cycle when glucose is …
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Quantification of left-to-right shunt through Patent Ductus Arteriosus by colour Doppler
… a non-invasive method to quantify the size of a shunt through a patent ductus arteriosus (PDA) by ultrasound and to test its usability in clinical settings. There is no consensus regarding the optimal management strategy for a PDA in premature infants. Non-steroidal anti-inflammatory drugs …
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Multi-resonant Electromagnetic Shunt in Base Isolation for Vibration Damping and Energy Harvesting
… configured multi-resonant electromagnetic shunt in base isolation. In this research, two multi-resonant shunt configurations, parallel and series, were proposed and optimized based on the H2 criteria when the base isolation system is subjected to ground acceleration excitations. The …
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Design of shunt active power filter to mitigate the harmonics caused by nonlinear loads
… on the design and application of three-phase shunt active power filter (SAPF) by using p-q theory to mitigate the harmonics which are created by nonlinear loads. To obtain result for this paper, the MATLAB / Simulink was used as a simulation tool. The achieved results are within the …
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