Browse "Science & Technology"

While working as an independent organic food inspector, Mischa Popoff says he felt like "a police officer without a billy club or handcuffs.

Accommodation, first successful steamboat built entirely in North America. It was launched 19 August 1809 at Montréal, its engines having been constructed at the Forges Saint-Maurice, Trois-Rivières.

Viscosity is the ability of a flowing liquid or gas to develop internal shear stresses that resist flow. In air, viscous forces are generally small in comparison with inertia forces, a condition which leads to flow instability and turbulence.

Canadian agriculture changed rapidly between 1850 and 1900, and changes in agricultural implements both caused and reflected changes in other sectors.

In 1997 there were 247 manufacturers of agricultural implements in Canada, employing 11 101 workers. Only 2 establishments employed more than 1000 workers; 90% of establishments employed fewer than 100 workers.

The Canadian agri-food industry has become an effective producer and processor of food and feed as the result of the work of innovative, hard-working farmers, good management of land resources, and the application of the technology derived from agricultural research.

For more than a century, the federal government has funded agricultural research through a network of research centres strategically placed in almost every province. This research program has played a major role in developing the more than $120-billion Canadian agrifood industry.

Harvesting of marketable timber, if present, constitutes the first stage and may involve individual trees or a stand. Logs may be cut, stripped and piled with tree harvesters; trees may be knocked down, lifted and moved with tree-dozers.

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.

Agroforestry is an intensive land management system that integrates the benefits from biological interactions created when trees or shrubs are intentionally grown with crops or livestock.

Illnesses that this infection can produce include a transient disease, developing within several months of exposure. It is characterized by rash, fever, malaise, joint pains and lymphadenopathy (swollen lymph nodes).

Air Profile Recorder (APR), a narrow-beam recording radar altimeter designed to provide topographic profiles for use in the mapping of wilderness areas. The instrument employs a 3.2 cm pulse transmitter that feeds a parabolic radiator, mounted below the aircraft.

Air Traffic Control (ATC) is the service provided to pilots to assist them in operating their aircraft in a safe, orderly and efficient manner.

The site is important because it confirms that Centrosaurus was a herding dinosaur, and documents that the herds were larger than previously thought, numbering well into the thousands.

AOSTRA was merged into the Provincial Ministry of Energy's Oil Sands and Research Division in 1994. The corporation was dissolved in 2000 and its assets and liabilities were vested in the Alberta Science and Research Authority.

The Alberta Research Council, the oldest provincial research organization, was established by order-in-council as the Scientific and Industrial Research Council of Alberta in 1921. Instrumental in founding the organization were J.L. COTÉ, provincial secretary, and H.M.

Albion Mines Railway, Pictou County, NS, was the second steam railway in Canada and the first to use a standard gauge and split-switch movable rail.

On a lazy summer day in 1874, resting in his favourite spot along the Grand River in Brantford, Ont., Alexander Graham Bell conceived of the telephone. He would write years later that "one observation leads to another.

The alarmingly increasing frequency of allergies, affecting over 20% of the population in developed countries, has led to the establishment of a new branch of medicine, that of allergology, which is conceptually closely related to immunology.

At first, the effects are almost imperceptible: a man or woman cannot find keys or forgets the name of a loved one. As Alzheimer's disease continues to destroy nerve cells in the brain, the incidents become more frequent - and more troubling.