Since energy is the major concern in current and future mining operations, energy efficient technologies are a major focus for research and development. The CAHM machine was developed based on principals of energy efficient particle breakage by compression. The machine design was based on computer simulation and modeling results indicate the potential to reduce comminution energy requirements by 50% as compared to present technologies. CAHM simulations show that the technology can achieve high reduction ratios, consuming less specific power, which translates into energy efficient operation.
Enhancing the current and power density in polymer electrolyte membrane fuel cells (PEMFCs) is one of the main challenges to their large-scale commercialization and hence in tune with the pending needs of the PEMFC industry. The volumetric power density in PEMFC stacks is strongly affected by the flow field plates due to their critical impact on the reactants distribution over the electrodes and their bulky size. In the proposed research, baffle-type parallel-channel cathode, anode and cooling flow field plates are designed with a small thickness.
Cu and Ni minerals that have great economic value mostly exist in the form of sulfides, making them difficult to extract using hydrometallurgical processes. Currently, heap leaching is the most economical way to extract these metals from low grade ores. Copper recoveries of many chalcocite heap leaches report around 70% copper recovery. However, the chalcocite leaching reaction has several stages. The first stage leach is characterized by 50% copper extraction and the conversion of chalcocite into a second stage of covellite (CuS) which is very difficult to leach at ambient temperature.
Many engineering projects are undertaken on and around rivers, such as the construction of bridges and the placement of pipes under river beds. These engineering projects modify flow conditions away from those which occur naturally, inducing additional sedimentation and scour. This research will focus on a deep scour hole in the riverbed at the Alex Fraser bridge on the Fraser River in British Columbia. In this location a great deal of engineering work has been undertaken, leading to the development of the deep scour.
Forest management in Canada will be more and more constrained by species habitat requirements as well as the risks and results of natural disturbances. The recent, sever Mountain Pine Beetle outbreak in the interior of British Columbia resulted in a harvest shortage of lodgepole pine in this region. Forest managers now rely heavily on non-pine harvests, mainly within the Interior Douglas-fire forest type. This forest type requires partial cutting and is further constrained by several ecological and social forest management objectives.
Inter-tissue adhesions cause significant complications following veterinary surgery of domesticated animals. Fucoidans are natural, negatively charged, carbohydrate polymers (polysaccharides) from seaweeds that have been successfully developed and commercialized for reducing such adhesions, thereby improving surgical outcomes. Currently, the inherent variability in the molecular size and composition of native fucoidans extracted from seaweed presents a significant barrier for their break-through application in human surgery.
Bio-heap-leaching is a hydrometallurgical process used to process low grade chalcopyrite ore as the cost of alternative routes of processing and refining are not economically viable. The limitation however of the heap leaching process is the long time it takes to leach the metal and the low total recovery that can be achieved. As heap leaching being a large scale atmospheric leaching process, neither temperature nor pressure can be changed.
We are in the process of creating and growing a team of researchers, expert in the field of machine learning and data-mining. Ultimately, our aim is to create solutions to eliminate the need to manually define personalization strategies. We are in the process of signing partnership agreements with retailers capable of collecting large-scale datasets of customer behaviour. Through a data-sharing/consulting partnership we plan to perform research on the design of recommender systems customized for the data-sets available to brick and mortar retailers.
Learning disabilities (LD) are a significant area of identified disability for children in North America and worldwide. We currently understand cognitive processing weaknesses to contribute to the developmental difficulties that children with LD face in learning and beyond. One of these areas of cognitive weakness, working memory, is an important target for intervention because it not only impacts learning but other important aspects of life. This project examines the working memory effects of a cognitive training program for children with LD, the Eaton Arrowsmith school.
With the increasing prevalence of mobile devices, it is unsurprising that they are also being adapted for use as tools for learning and perfecting complex procedures. One of these uses is training health care providers through simulated medical procedures. Two important points should be considered when designing simulated systems to assess the efficacy and efficiency of these teaching tools. 1) Individual differences in emotional biases and learning profiles may necessitate personalized stimulus presentations within simulated environments to achieve optimal and translatable learning.