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 14 of 14 for “"semi-passive"”.
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Evaluation of semi-passive treatment technologies for septic lagoon capacity expansion
… located in eastern Ontario. It makes use of a passive waste stabilization pond system to treat and dispose of waste and wastewater in an environmentally responsible manner. Storring Septic, like many other similar small-scale wastewater treatment facilities across Canada, has the potential to …
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Optimisation of a linear flow channel reactor for semi-passive, simultaneous biological sulphate reduction and partial sulphide oxidation
… This investigation aimed to optimise a semi-passive treatment process which integrates BSR, and concomitant partial oxidation, by sulphur oxidising bacteria (SOB), of the sulphide produced to elemental sulphur. This is generated as a floating sulphur biofilm (FSB). These processes occur …
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Design and control of a semi-passive, heavy-duty paired mobile robot system with application to aircraft wing assembly
We describe the development of a robotic system capable of performing a class of manufacturing operations. An example of such an operation is commonly found in aircraft assembly - this demonstrates the immediate applicability of this research. The system utilizes a unique concept - a pair of mobile …
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A novel semi-passive process for sulphate removal and elemental sulphur recovery centred on a hybrid linear flow channel reactor
… distribution across largely rural areas of SA. Semi-passive ARD treatment systems present an attractive alternative treatment approach for diffuse sources, with lower capital and operational costs than active systems as well as better process control and predictability than traditional passive …
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Alternative Power Transfer for Passive RFID Systems in Challenging Applications
… a case study which attempts to implement a passive Ultra High Frequency Radio Frequency Identification (UHF RFID) system on aircraft landing gear (LG) to permit component configuration management. It is shown that a monostatic RFID system with two reader antennas, one on the LG main fitting …
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An investigation towards passive treatment solutions for the oxidation of sulphide and subsequent removal of sulphur from acid mine water
… perspective. The Integrated managed passive (IMPI) treatment system is a semi-passive biological process, which was developed for the treatment of sulphate-laden mine water discharges. The system consists of modular sulphate reduction and sulphide oxidation units. A …
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Integrating Microbial Fuel Cells (MFCs) into the treatment of sulphate-rich wastewater
… where mining is currently and has taken place. A semi-passive method of continuous ARD waste treatment is currently being investigated within the Centre for Bioprocess Engineering Research (CeBER) (van Hille et al., 2015). This research involves the use of a Linear Flow Channel Reactor (LFCR) …
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High Fidelity Localization of Energy Autonomous mmIDS for Future Cyber-physical Systems
… off-axis structural health monitoring fully-passive sensor for local strain monitoring for both adhered or embedded form-factors. Along with the design and characterization of the wireless strain sensor, a multi-tag interrogation framework is presented for future ubiquitous structure health …
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RFID technology
… RFID systems, while in UHF bands are known passive UHF RFID systems and in microwave bands called semi-passive RFID systems. Passive UHF RFID system is the most popular system in RFID systems. This is due to the long read range, Lowe cost and the small size that they offer. However, this …
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Stability analysis and control for bipedal locomotion using energy methods
… we investigate the stability of limit cycles of passive dynamic walking. The formation process of the limit cycles is approached from the view of energy interaction. We introduce for the first time the notion of the energy portrait analysis originated from the phase portrait. The energy plane is …
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An embedded, wireless-energy-harvesting platform (E-WEHP) for powering sensors using existing, ambient, wireless signals present in the air
… to implement a very low-cost, battery-less, semi-passive wireless-tag but with a much longer range than passive EPC-Gen2 RFID tags. A GPS-like, low-cost, vehicle-tracking system based on a received-signal-strength-indication method using SOLTAGs in vehicles and a wireless network of …
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Development of monitoring applications for refrigerated perishable goods transportation
… been focused to the adaptation of miniaturized semi-passive temperature loggers for monitoring refrigerated shipments by truck. This study included an analysis of the amount of local deviations, the detection of temperature gradients, and the estimation of the minimum number of sensors that are …
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Investigation of alternative carbon sources for the biological treatment of synthetic sulphate-laden water and mine impacted water in a linear flow channel reactor
… need for large land areas for installation for passive treatment. These treatment methods are not cost-efficient when treating low-volume, circum-neutral wastewater. Biological sulphate reduction (BSR) offers a sustainable alternative for sulphate removal and is applicable to partially treated …
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A Comparative Analysis of the Performance and the Microbial Ecology of Biological Sulphate Reducing Reactor Systems
… transfer was an important feature within thesemicrobial communities. The dual consumption of both acetate and hydrogen was concluded to have facilitated the maintained sulphate reducing performance of the acetate-supplemented reactor systems at short HRT where system failure had been …