This project involves three streams, all focusing on the effects of low-dose ionizing radiation. The first stream examines the effects of single ion irradiation using the Microbeam at McMaster University. Preliminary biological research will be conducted on human cell lines using standard radiobiological endpoints including DNA double strand break foci and micronuclei formation. The second stream is a clinical trial assessing whether low-dose half-body irradiation can stimulate immunity and reduce recurrent prostate cancer.
Pipelines are a common means to transport oil, gas, and other petroleum products used by citizens in everyday life. Permanent inward deformations, called dents, can develop along a pipeline, most of which are not a safety concern. The objective of the project is to develop the processes used to accurately assess the safety of different types of dents. Maintaining pipeline integrity is of utmost importance to protect the environment and the community.
Integrated integrity management is essential for subsea pipeline failure prevention, predictive maintenance and life extension campaign. Without managing integrity adequately, the condition of subsea pipeline would continue to deteriorate until premature failure. Real-time Condition Monitoring (CM) is a sensor-based monitoring technique aimed at enhancing the productivity of pipeline operation. The main intent of condition monitoring is to assess operating conditions and performance, improve performance, aid maintenance, extend life and inform operator if the integrity is compromised.
This research project with the industry partner Saskatchewan Research Council focuses on the displacement front instability in heavy oil recovery processes such as water flooding, solvent injection and polymer flooding. In those processes, the less viscous displacing fluid usually moves faster than the more viscous displaced heavy oil. This results in an instability that manifests itself in the form of finger-shaped intrusions, and which is viscous fingering (VF). The VF phenomenon tends to greatly reduce sweep efficiency, leaving a large amount of untouched heavy oil underground.
The growing trend of delivering structural design services for industrial structures to foreign countries has often led to designs that reflect the local experience of designers who are part of a construction culture that includes very low-cost labour. The result is that Canadian construction companies such as the research partner company, Waiward Steel LP, are faced with fabricating structures that are neither efficient nor provide good value for owners.
The proposed internships will be aimed at developing advanced computer (software) and hardware platforms for simulation of modern power-electronic converter systems used in emerging electric power transmission systems. In particular, modular multi-level converter (MMC) simulations will be targeted. These converters are considered the primary candidates for dc systems used to integrate renewable energy sources into the existing grid. These two internships will develop functional models that can be readily used for the analysis and design of systems involving modular multi-level converters.
A partial discharge is a localized spark that bridges a small portion of the insulation between two conducting electrodes under high voltage. The lifetime of high voltage electronic devices is often determined by the ability of the insulation material to withstand partial discharges, which start within gas voids in solid polymer insulation. A typical monitoring of insulation for voids and cracks requires long measurement times.
The performance of an electric vehicle traction drive, comprised of an electronic power converter feeding power to an electric motor, is defined by its control stages and different system parameters- such as switching frequency of the semiconductor devices of the converter. The proposed internship aims to determine changes in conventional control strategies and selection of switching frequency to improve the power conversion efficiency and drive response time. First, selection of switching frequency to improve the power conversion efficiency and drive response time.
Water contamination from mining activities is a global problem, damaging many freshwater ecosystems. This water, which can seep into the natural environment is high in heavy metals and can be very acidic. Options for treating this water can be very expensive or impractical for many of these contaminated sites, which can include abandoned mines. A new, inexpensive way of treating this water is being studied by CRL Energy in New Zealand, using mussel shells, a waste product itself from the food industry.
Our ever-increasing needs for material and energy to sustain our modern lifestyle put an increasingly difficult-to-bear stresses on the extraction, harvesting, transformation and utilization of natural resources and their disposal (or waste), which ultimately lead to environmental, economical, political and societal consequences. Researchers from PyroGenesis Canada Inc.