The proposed research project pertains to the analysis and understanding of the role of oxygen in gold extraction and recovery process. Currently most gold mining operations apply air in their gold recovery process, but there are some data showing that the gold recovery with air application is not efficient. It is believed that the use of oxygen gas would result in higher gold recovery and ultimately lower costs. Also we believe the application of oxygen gas instead of air would minimize or eliminate the need for addition of lead nitrate into the gold recovery process solutions.
Ducks Unlimited Canada (DUC) is an established non-governmental organization (NGO) which promotes conservation. In recent years, support for the organization has dwindled. For the organization to continue its work and maintain necessary support, DUC must improve their understanding of how they gain and retain both volunteer and financial supporters.
As researchers at the UQAT we are currently undertaking with our partner, Tembec, a project on the regional mapping of the extent of the organic layer accumulation over time on the forest floor of the boreal black spruce forests (paludification) in the Abitibi and North of Quebec regions. Gaps that this project will address include exploring for the first time new remote sensing imagery (i.e., Landsat-8 and Sentinel) and alternate image analysis statistical approaches.
The boreal forest is an essential breeding ground for hundreds of North Americas bird species, yet it is poorly studied. Many of these birds are rapidly declining, including a group of birds called the aerial insectivores. These birds are not necessarily related to each other, but instead they share a behaviour: they all catch insects in the air. No one knows just why they are declining, but they are disappearing faster than any other bird group in North America. Their shared feeding behaviour suggests that it is related to changes in insect populations.
The research project provides for the advancement of knowledge of and methodology for fretting phenomena modeling specific to nuclear fuel rod systems to preclude component failures. Grid-to-rod-fretting (GTRF) remains the most common cause of fuel rod failures and associated performance issues in pressurized water reactors (PWR). GTRF denotes the deterioration of the surface integrity of nuclear fuel rods and supporting spacer grid systems attributed to the cumulative effects of surface contact dynamics.
Fine particulate air pollution is recognized as causing health problems globally, but health researchers are just starting to understand where people receive their exposure, which will influence policies and regulations. There is a need for size-resolved particle measurements using a device that can be carried easily by a person. Nanozen has built such a device, and it could be used also for workplace ventilation control. However, first the sensor response to a wide range of particle sizes and compositions must characterized.
When light interacts with matter, different effects may take place, depending on the particular characteristics of both light and matter. The result of this interaction, typically a quantitative change in the characteristics of the light (i.e., intensity, wavelength, phase), can be used to measure the presence of a particular specimen of interest. Specifically, Surface-enhanced Raman Scattering (SERS) has demonstrated to be able to detect accurately very low concentrations of chemical species.
Copper, a conductive metal, forms the basis of much of our manufacturing and electrical infrastructure. Yet, despite high demands for the metal, supply is not keeping pace. One of the chief reasons is that copper extraction faces steep technical challenges that have steadily pushed up capital expenditures. We propose to use a recent innovation called synthetic biology to greatly improve the efficiency and cost of copper extraction. Our method employs microorganisms that leach copper via a process called bioleaching. Despite the methods promise, however, some challenges remain.
In recent years, with increased urbanization, the beneficial role of urban trees and forests has become critical for Canadian residents. Despite this recognition, there is little knowledge of the extent of urban forestry activities being performed across the country; one of the reasons for this is that urban foresry is happening under different labels. In addition, there is no federal or provincial support or records of work being done. Urban forestry is the responsibility of municipal governments.
Emission of CO2 from industrial processes contributes to global warming. Numerous technologies have been proposed to reduce the amount of CO2 released to the environment. The C-3 process, in which ~50% of CO2 in flue gas can be captured using small water droplets, shows great promise for low-cost removal of CO2. Enviro Innovate, the owner of C-3 process technology, wants to better understand CO2 capture mechanisms and the influence of operating conditions (e.g., temperature, water droplet size and velocity) on the effectiveness of CO2 removal.