Crack formation in twin-sheet thermoformed HDPE kayaks

Thermoforming is an industrial manufacturing method to form plastic sheets into shapes such as small boats. Our industrial partner uses twin-sheet thermoforming which includes joining two sheets of high density polyethylene (HDPE) to manufacture small boats. Cracking adjacent to the welded area has been observed in one of their joint designs. The cracking problem appears […]

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Microfabrication Process Development for Wafer-Scale Vacuum-Encapsulated Microresonators

Miniaturized resonators and oscillators built using microelectromechanical systems (MEMS) technologies have the potential to revolutionize the $5 billion timing market, as they offers direct CMOS compatibility, a dramatic size reduction, and a fabrication cost that is a fraction of the current incumbent technology. However, frequency stability has proved to be major challenge for many companies. […]

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Développement d’un outil de stratégie marketing basé sur la fouille de données historiques

Depuis quelques années, de plus en plus d’entreprises utilisent le data mining pour mieux comprendre les caractéristiques et les comportements de leurs clientèles. L’utilisation du data mining dans une étude de marché peut permettre d’identifier des facteurs invisibles avec des méthodes traditionnelles et ainsi avoir meilleure connaissance du client et bonifier la relation avec ce […]

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Effective use of a variable speed blower fan on a mechanical wild blueberry harvester for increased debris separation and berry quality

Wild blueberries are an important crop to this region as this is the only area that wild blueberries are naturally occurring. The changes in wild blueberry crop conditions caused by improved management practices over the past decade has caused increased plant density and leaf foliage. This extra foliage has made it more difficult for the […]

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Shake Table Testing and Analytical Validation of a Reduced Scale Dam Considering Dam-Water Interaction

Hydropower dams are significant investments and their integrity affects many stakeholders. Failure of a dam results in catastrophic events which cannot be mitigated. Seismic evaluation and prediction of dynamic response of dams need in depth assessment which has always been challenging with complex dam-water-foundation interaction. Impounded water considerably affects the response of a dam during […]

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Biomass pyrolysis in a vertical auger reactor and the valorisation of co-products: An energy balance based on the life cycle approach

Pyrolysis, which is the thermochemical decomposition of biomass at high temperature (350 to 700°C) under oxygen-limiting conditions, is a promising technology for the sustainable management of forest and agricultural biomasses. Pyrolysis decomposes biomass into biochar, non-condensable syngas and condensed liquid bio-oil. Those co-products can be used as an energy source in order to replace fossil […]

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Identifying potential approaches to managing water resources in Champagne and Aishihik First Nations’ Traditional Territory, Yukon

Yukon Energy Corporation (YEC) began generating hydro-electricity at the Aishihik Hydro Facility, situated within Champagne and Aishihik First Nations’ (CAFN) Traditional Territory, Yukon, in 1975. Their continuing water use license will expire in 2019. Notwithstanding the Aishihik facility’s 41 years of energy production, CAFN has repeatedly expressed social and environmental concerns associated with the facility’s […]

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Characterization of a novel personal aerosol measurement device

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, […]

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