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Article

Tantalum

Tantalum (Ta) is a grey, heavy, very hard metal with a high melting point (2996°C). When pure, it is ductile and can be easily fabricated. Tantalum has good rectifying properties (ie, converts alternating to direct current) and dielectric properties (ie, does not conduct direct current).

Article

Veterinary Medicine

Veterinary Medicine, the science dealing with health and disease in vertebrates, has application to 4 broad domains: domestic animals, wildlife, comparative medicine and public health.

Macleans

Blood Substitute Tested

According to medical lore, the ancient Incas were the first to attempt blood transfusions. And over the centuries doctors around the world have pumped everything from beer to urine into hemorrhaging patients.

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History of Veterinary Medicine

The healing of ANIMAL and human ailments has been a preoccupation of humans for centuries. Human MEDICINE became professionalized much before veterinary medicine, which did not become institutionalized until the opening of veterinary schools in France at Lyons (1761) and Alfort (1766).

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Stress

Stress was originally viewed as an overpowering external force acting upon individuals or objects. The mechanical engineer still uses the word in this sense, but human biologists have been less consistent in their terminology.

Article

Human Genome Project

GoalsAlthough the formal goal is to describe the sequence of nucleotides in the total length of DNA in the nucleus of a human cell, genes themselves are in fact very sparsely scattered within the DNA strand.

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Agriculture and Food

Canada's agriculture and food industries have changed greatly in the years since the Second World War. Growth in Canada’s economy, and associated social changes, have altered the way food is produced, processed, handled, sold and consumed.

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Geomatics Canada

Geomatics Canada, along with the Geological Survey of Canada and the Polar Continental Shelf Project, became part of the Earth Sciences Sector of the Department of Natural Resources in the mid-1990s. It was formerly known as the Surveys, Mapping and Remote Sensing Sector.

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Flour Milling

In North America in precontact times, Indigenous people hand-ground corn and other substances (eg, acorns) into flour used in porridge, flat cakes, etc. By the middle of the 16th century, the first European settlers had arrived in New France, bringing with them their flour milling technology.

Article

Soil Science

Soil science is the science that deals with soils as a natural resource. Studies focus on soil formation, classification and mapping, and the physical, chemical and biological properties and fertility of soils as such and in relation to their management for crop production.

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Miguasha Fossils

 In addition to fishes, a few INVERTEBRATES, such as small CRUSTACEANS, worms and eurypterids, which are giant cousins of land scorpions, lived at the bottom of the estuary.

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Weather

WEATHER FORECASTING is the attempt to understand atmospheric patterns to predict the weather conditions that will occur at a specific place and time, including temperature, wind, cloud, precipitation and humidity.

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Waste Disposal

Although the term SOLID WASTE refers to a wide range of discarded materials (from kitchen scraps to mine tailings), the component known as refuse has the greatest potential for environmental contamination.

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Weather Forecasting

Most modern meteorologists attempt to cope with physical processes by expressing them mathematically, ie, by creating mathematical models of the atmosphere. Powerful computers are then used to solve problems.

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Antibiotic Resistance in Canada

Antibiotic (or antimicrobial) resistance developed with the wide distribution of antibiotic medications in the 20th century. Resistance occurs when the medication is no longer capable of killing or preventing the reproduction of bacteria. A major global health challenge, antibiotic resistance makes treating diseases more difficult and expensive, and it results in fewer antibiotics that are effective in managing infectious diseases. Rates of antibiotic-resistant infections are rising in Canada. In hospital settings, infections that resist multiple drugs are also becoming more common. In 2019, an expert panel of the Council of Canadian Academies estimated that resistant infections contributed to more than 14,000 deaths in Canada the previous year. Canadian health agencies, medical professionals and industries are active in multiple efforts to combat this problem. 

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Virus

Virus, the smallest form of life (20-300 nanometres), is structurally and functionally unique. Their size is such that they do not contain enough genetic material to code for the proteins they require for reproduction, nor do they have ribosomes needed to synthesize these proteins.

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Eating Disorders

Eating disorders are diseases in which people have unhealthy relationships with food caused by poor self-image, a fear of weight gain or an inability to stop eating. Such disorders are often coping mechanisms for other personal or psychological problems.