Currently, mine water treatment systems within the Sydney Coalfield extract and treat mine water from depth with the aim to gradually âflushâ the mine pools of its acid-generating products and achieve good water quality over the long-term. However, since the deep, lower quality mine water is always being treated, significant annual operational costs (>$1 million) are being incurred. This project will evaluate the hydrodynamics and hydrogeochemistry of the mine pools and investigate treatment approaches that instead focus on the shallow, higher quality mine water.
Human activity near lakes can have a profound impact on the state of the lake. When nutrient-rich pollution enters the lake it can cause toxic algal blooms, decreased oxygen levels, a loss of diversity, fish kills and degradation of water quality. Aquatic plants may limit nutrients in run-off from entering the main lake. Aquatic plants along the shoreline take up the nutrients that potentially enter the lake before they get to the open water zone. At Chandos Lake, Ontario, the species of aquatic plants living along the shoreline have changed due to an invasive plant entering the area.
Mite and insect pests pose an ongoing threat to the sustainability of greenhouse vegetable production. Their control is critically reliant on pesticides. However, the intensive use of pesticides and the shrinking number of registered insecticides and acaricides increases the selection pressure against the few chemicals available and accelerates the evolution of resistance. This is critical for the two-spotted spider mite, aphid, whitefly and thrips populations as they are becoming increasingly difficult to control.
The proposed research project will determine the significance of and catalog historic papers and documents held by the National History Committee (NHC: established 1983) of the Canadian Society for Civil Engineering (CSCE: established as the Canadian Society of Civil Engineers in 1887). These records have been rather haphazardly stored by various Chairs of the NHC since its inception and, if properly organized, will provide a valuable archive for historical researchers that will be housed at the University Ontario Institute of Technology Library.
Lithium-ion batteries (LIBs) have become a key player in the growing need for electric vehicles (EVs). State-of-the-art LIBs, using liquid electrolytes, still have significant challenges in their safety, lifespan, and energy density. Accordingly, solid-state lithium metal batteries (SSLBs) have recently been attracting increasing research and industrial attention due to their ability to overcome intrinsic disadvantages of flammable liquid electrolytes used in current LIBs.
Cities need an evidence-based understanding of cycling barriers and facilitators to support policy and programming aimed at promoting cycling. In London, this evidence is currently limited. The London Cycling Survey aims to address this gap. The purpose of this Survey is to examine the barriers and facilitators to cycling in the context of London and to identify key issues and opportunities to improve cycling for transportation in our community. First, focus groups (interviews) will be conducted to capture the perspectives of cyclists in London.
The proposed research project seeks to develop protocols that will enable one to measure the functionality of the auditory brainstem in a way that is clinically viable and time efficient. This project aims to minimize the time necessary to conduct an inclusive otoacoustic emissions (OAE) test using contralateral acoustic stimulation. By setting threshold signal to noise ratios, outputs from the ear in response to specified pure tones centered around frequency levels imperative for understanding speech will be analysed.
Cellulose is a commercially important biopolymer. Due to its abundance, biocompatibility and renewability it has shown important commercial applications in food, pharmaceuticals, biomedical. Depending on the origin and the processing methods used, the resulting fiber dimensions, structure, crystallinity and molecular weight (MW) can vary over a broad range. MW is one of the most important parameters in polymer characterization as many of its properties depend on it. Gel permeation chromatography (GPC) has been the technique of choice for determining these properties.
This proposed project focuses on American ginseng (AmG), a natural herb native to Canada that has been used as a traditional medicine for many generations. Southern Ontario has become the Worldâs largest producer of AmG with annual sales of over $400M at the farm gate. Polysaccharides (PS) are a major active component of AmG showing various biological activities including anti-carcinogenic, anti-aging, immunostimulatory and antioxidant effects.
Playing outdoors in exciting, risky activities has been shown to positively impact the health of children. However, children are often restricted from engaging in this type of play due to safety concerns. Educating adults who care for children about the importance of outdoor risky play is an important step to help improve childrens opportunities for outdoor play in childcare.