Projets novateurs réalisés

Green technology use in gold recovery: Deer Cove

The Deer Cove gold mine is located approximately 4.2 km north of Ming’s Bight near Baie Verte, north-central Newfoundland. Free gold has also known to occur in the surrounding till. While preliminary studies have been done it is still unknown if the gold in the till can be economically and more importantly environmentally recovered using green technologies.
This project will investigate the possibility of developing an economically viable green process to extract gold from the till in Deer Cove, leaving natural habitat intact. The final product will be a feasibility study that covers the potential to economically mine using green technology. The work will set up the possibility and framework for field trials.

Cave to Mill: A Multi-Disciplinary Approach Linking Orebody Knowledge, Footprint Reliability and Sensor-Based Sorting to Improve Safety and Productivity

The proposed research project aims to develop and verify new technologies and numerical tools directed at six main research focus areas: 1. Orebody Knowledge, 2. Grade Management, 3. Cave Mine Design, 4. Integrated Cave-to-Mill, 5. New Measurement Technologies, and 6. Hazard Management. This project will also see the establishment of a multidisciplinary research network, the International Caving Research Network, to be directed at maintaining Canada’s competitiveness in the international mining industry. The research will see several interns working closely with industry to help optimize value and ensure worker safety in deep underground mass mining operations. The research network includes a multi-disciplinary group of representatives from industry and academia covering the fields of geology, cave mining, geomechanics, and mineral processing.

Enzyme-assisted conversion of oat flour into protein isolate

Oat flour has high levels of nutrients, especially proteins, fibre and starch. While the starch and fibre is widely used in food formulations, the protein portion lacks extensive utility in the food industry. In order to extend the value-added utilization of oats, there is need to produce commercial-grade protein products. This work is highly relevant because of the current emphasis on plant proteins and their use to promote human health. The aim of this work is to develop a processing method that will enhance separation of the proteins from the other nutrients. An aqueous-based extraction process will be developed to separate the proteins from the other nutrients. The isolated proteins will then be investigated for potential use as novel ingredients to formulate high quality food products. The work will enable the partner organization become a major player in the global plant protein market and provide significant economic returns.

Méthodes de programmation dynamique stochastique pour la planification hydro-électrique moyen-terme sous incertitude

Le but de la planification hydro-électrique moyen-terme est de déterminer la quantité de ressources hydrauliques qui sera puisé de chacun des réservoirs d’un système de production pour répondre à une demande électrique ou en débit. Ces quantités ou politiques s’étendent en général sur des horizons de 1 à 2 années avec des décisions hebdomadaires ou mensuelles. La principale source d’incertitude dans ce problème est le volume d’eau que recevra notre système dans le futur. Une politique sera donc d’autant précise que le modèle des apports en eau permettra de capturer l’hydrologie locale.
Nous nous proposons de développer une méthode de calcul d’une politique basée sur l’utilisation d’un modèle hydrologique autorégressif à moyenne mobile. Nous étudierons ensuite une méthode hybride permettant d’aller tenir compte du détail d’un grand système de production comme celui d’Hydro-Québec.

Résolution temporelle de détecteurs monolithiques et pixellisés pour la tomographie d’émission par positrons avec temps-de-vol ultra-rapide

La tomographie d’émission par positrons (TEP) est une modalité d’imagerie médicale permettant le diagnostic et le suivi de cancers, maladies neurodégénératives et maladies cardiométaboliques. La prochaine percée majeure en imagerie TEP repose sur la mesure de temps-de-vol (TdV) ultra-rapide, nécessitant une excellente résolution temporelle des détecteurs du scanner. Les détecteurs conventionnels ne possèdent malheureusement pas la résolution temporelle nécessaire pour pleinement profiter des avantages apportés par le TdV en imagerie TEP tels qu’une réduction du temps d’imagerie, une détection de structures et lésions de plus petite dimension ou à faible contraste, et une ouverture de l’imagerie TEP vers une population pédiatrique. Il faut ainsi tenter d’optimiser les détecteurs en produisant un signal intense et ultra-rapide. Le but du projet de recherche est d’étudier et comparer la performance de deux familles de détecteurs pour les scanners TEP-TdV ainsi que de développer une méthode de génération rapide de signal. TO BE CONT’D

Characterizing the physiological correlates of post-release mortality in a model sportfish species

Recreational angling represents an economically and culturally important activity worldwide. However, stresses associated with catching a fish, particularly exhaustive exercise, can result in an impaired physiological condition and delayed mortality following the fish’s release which are harmful to the fish’s health and well-being. Additionally, because fish are cold-blooded, the degree to which angling affects fish survival is thought to be influenced by water temperatures; a significant concern with global climate change. Currently, the specific mechanism(s) that contribute to fish mortality after an angling event are currently unknown. The main objectives of this research are to determine the specific physiological pathways that cause a fish to die following an angling event (i.e. exhaustive exercise) and how temperature (i.e. climate change) can influence this effect. This will be done using barramundi, a species of fish native to Australia that is a popular sportfish. TO BE CONT’D

Improving flexible, printable electrochromic devices with silver nanowires

An electrochromic device alters its optical properties such as tint or colour through a voltage. They are currently used in car rear-view mirrors, smart windows, electrochromic displays and eyewear. Conventional electrochromic devices are built on glass, but future applications such as foldable displays demand mechanically flexible devices. Furthermore, to reduce manufacturing costs, materials that are printable are highly desired. In this project, silver nanowires, which are cylindrical-shaped silver filaments that are easily synthesized in solution, will be used to improve the performance of printable, flexible electrochromic devices. Firstly, meshes of silver nanowires will be used as transparent electrodes to enable electrochromic displays on transparent paper. Secondly, silver nanowires will be used as an additive to improve the performance of inexpensive polymer-based electrochromic displays. This work aims to lower the cost of electrochromic devices and enable new applications such as flexible or disposable products.

Recurrence Interval of Large Earthquakes in the Eastern Himalaya

I designed my master project for performing paleo-seismological research in the eastern Bhutan, where no instrumental or historic earthquake is known and where a historic surface rupture along the Himalayan front was recently identified. Based on the ages of the known large historic earthquakes in the eastern Himalaya, the newly identified surface rupture could have been produced by the ~1714 CE (Common Era), ~1255 CE, or ~1100 CE earthquake. The goal of this research is to identify and characterize paleo-seismic events in the eastern Bhutan and determine how often large, destructive earthquakes occur in the eastern Himalaya. The age of the paleo-earthquake will be determined by dating the displaced river terraces applying radiocarbon (14C) dating and optically stimulated luminescence (OSL) thermochronology. The results will contribute to seismic hazard evaluation in the area and the debate about a potential for subduction-type mega-earthquakes in the Himalaya in general.

Economic and environmental impacts associated with removal of productivity-enhancing technologies in the Canadian beef cattle industry

Beef cattle play an important role in food production worldwide by making use of resources from which humans can derive little nutritional value to provide a nutrient-rich foodstuff containing protein, minerals and vitamins. However, greenhouse gases and ammonia that are produced by the cattle industry are associated with climate change. Producing nutritious beef that meets consumer demands with minimal environmental impacts requires a concerted effort from all stakeholders in the beef industry. Changes in local and global consumer demand have created both opportunities and challenges for the cattle industry. Therefore, an assessment of the environmental and economic implications of removing PETs is necessary to provide science-based information that considers the environmental and economic impacts of market expansion in this area and to assist consumers in making informed decisions about food purchases.

Improving the bending stiffness of multi-ply folding boxboard with maple HYP

BCTMP (Bleached chemi-thermo-mechanical pulp) or HYP (high-yield pulp) is an important

sector in the Canadian market pulp business, and most of them has been exported to Europe

and Asia and over half of it is used as middle-ply furnish in Folding Boxboard (FBB). FBB

requires high bending stiffness for crush resistance, z-directional strength for preventing delamination,

surface smoothness for good printing, and good die-cutting performance for

conversion. Maple HYP has been known to be the premium pulp in the middle ply of FBB

since it has a very high bulk. In this project, we will determine the difference in fiber stiffness

and compressibility as well as bulk formation mechanism between maple and eucalyptus

HYP. This will help identify the potential advantages of using maple in FBB and develop

practical strategies to maximize the contribution of maple HYP to bulk and bending stiffness

as well as other properties of FBB.

Cited: Partnered Knowledge Mobilization Between Research and Media Organizations

This is project that creates audio documentaries that are grounded in academic research. As part of this project, Mitacs interns will work for three distinct podcasts: Cited Podcast, Crackdown, and Blue and Goldcast. These podcasts are meant for a general audience, and have wide popular and critical appeal. They are developed in a unique collaborative approach (putting students, scholars, and professionals together), which makes for a compelling final product. Mitacs interns will conduct original research and reporting to support the development of these podcasts. Then, the episodes will be distributed widely with prominent media partners, including CBC and NPR programs.

Impact of Post-Quantum Cryptography on PKI, Common Libraries, Protocols and Crypto Agility Requirements

Advances in quantum computing have Entrust Datacard and their customers concerned about whether the industry is ready to move to post quantum cryptographic algorithms, particularly for PKI use cases. Entrust Datacard and University of Ottawa will test the quantum-readiness of commercially-available PKI. The end goal is to provide guidance to the community about the impact of particular PQ algorithms on common infrastructure, provide examples of safe migration paths where they exist, and recommend changes or mitigations based on discovered issues. This research will help establish Entrust Datacard’s leadership moving towards post-quantum cryptography and prepare the market to meet the challenges of a post-quantum world.