The student will travel to the Federal University of Santa Catarina (UFSC), Florianopolis, Brazil, for 12 weeks to develop the chemical synthesis of new organo-tellurium compounds whose molecules will be used as building blocks for large self-assembled structures with functional properties. This project will combine the expertise of I. Vargas-Baca (McMaster) and A L. Braga, hence starting collaboration in between their groups. This project will be a cornerstone in the graduate research project of the student.
Ducks Unlimited Canada operates multiple fishways slated for replacement throughout Nova Scotia. Recent fishway passage studies on alewife indicate that identifying problem areas for fish passage, and altering fishway design accordingly, greatly increases fish passage. To assess fish passage at fishways, movements of fish will be monitored using passive integrated transponder tags and antenna systems. Predator exploitation of fishes during migration delays will be determined by acoustically tracking predators and prey.
Currently, storage of donor kidneys at low temperatures is limited to 24 hours. If the storage time of donor kidneys could be extended, this would allow more opportunity to identify and prepare suitable recipients for this life-saving procedure. Our improved method of kidney storage at subzero temperatures will also allow patients at more remote locations to benefit. Our novel kidney storage solution is expected to reduce damage to donor organs and thus decrease post-transplantation damage.
Society uses thousands of chemicals and the potential risks to humans and the environment for the vast majority of these chemicals are largely unknown. It is not feasible to measure all of the chemicals and there are substantial data gaps; therefore, models are required to screen and evaluate chemicals for potential exposures and risks to humans and the environment and to address data gaps. ARC Arnot Research & Consulting develops models for screening-level exposure and risk assessment. There is a need to test these models.
Seaweeds and seaweed products have been promoted in agriculture as source of nutrients and activators, to improve plant growth, plant productivity and food production. A wide range of beneficial effects have been observed, including seed germination, enhanced growth and crop yield, elevated resistance to biotic and abiotic stress. However, the bioactive compounds have not been identified using classical methods of bioassay-guided fractionation and the mechanisms of action remain poorly understood.
Beetles, possibly of an undescribed species, frequently inhabit honeybee (Apis cerana) hives in Vietnam. They walk over and around honeybees in their nest with no apparent harm to the bee colony. Surveys of beekeepers and their hives will enable us to determine the distribution and incidence of the beetles. A number of biossays will provide information on the tightness of the relationship between the two insect species (e.g., preference of beetles for various foods; honey bees vs. other bees; beeswax vs. paraffin; etc.). We will rear the beetles to unravel their life cycle.
A joint research agreement was adopted between Concordia University and Zoo de Granby in the spring 2014. The firm BBA joined this partnership in November 2014. The aim of the initiative is to foster the training of highly qualified personnel in conservation and welfare of captive wildlife, by allowing Concordia students to get hands-on experience at the zoo.
Atmospheric acid emissions are increasing in north coastal British Columbia from increased metallurgical smelting, marine fossil fuel transport, and development of liquefied natural gas. Acid deposition can cause episodic acidification of streams when acidic compounds are flushed into streams after snowmelt and precipitation events over hours to weeks. Many salmon-bearing coastal streams are likely sensitive to episodic acidification, but these events are poorly quantified in western Canada.
Oil reservoir souring is the production of toxic hydrogen sulfide by sulfate-reducing microorganisms (SRM) through naerobic respiration supported by organic electron donors present in oil fields. In recent years, nitrate injection has merged as a promising green biotechnology that has been proven effective in controlling sulfide production in oil fields. This strategy relies on inducing nitrate-reducing bacteria (NRB), which can outcompete SRM for organic lectron donors.
Some social mammals present a group dynamic related to spatially and temporally variable environments described as fission-fusion dynamics. This dynamics is defined as the temporal division of a group into sub-groups varying in size and composition, and is thought to occur through social regulation to improve foraging efficiency. Nevertheless, the influential factors in that dynamics are not well understood. Particularly, the ecological causes and the social relationships in the fission-fusion remain unclear.