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Uranium oxide was first identified in 1789 by M.H. Klaproth in the MINERAL pitchblende, but its distinctive property of radioactivity was discovered much later (1896) by Henri Becquerel.

Astrophysicists use many branches of physics: nuclear physics to study power-generation in stars; atomic physics to understand the spectra of stars and gaseous nebulae; and gas laws and magnetic theory to probe starspots and flares on star surfaces.

The Arthritis Society is the only registered nonprofit agency in Canada devoted solely to funding and promoting arthritis research, patient care and public education. The Canadian Arthritis and Rheumatism Society, as the society was called until 1977, was founded on 14 October 1947.

Brachiopoda, phylum of bivalved marine invertebrates, sometimes called lamp shells.

Medical anthropology is the study of interactions between culture and health. Medical anthropologists are interested in how a person's cultural background influences his or her experiences with health, illness and medical systems.

Manufacturing is a critical component of Canada’s economy. The production, sale and distribution of finished products contribute to consumer and labour markets, and secure Canada’s position as an economic leader among developed nations. Major, medium-sized and small manufacturers produce goods used by Canadians and contribute to the revenue gained from the export of goods to other countries. Since the early 2000s, the manufacturing sector in Canada has declined significantly in response to changes in the global economy and fewer regulatory controls over Canadian products (see Free Trade; Globalization). The composition and structure of the Canadian manufacturing industry is transitioning in response to these changes, aiming to produce new goods that are in greater demand.

Its most important mineral forms are magnetite (Fe3O4, 72.4% Fe), hematite (Fe2O3, 69.9% Fe) and siderite (FeCO3, 48.29% Fe). In Brazil, some ore that contains practically no other minerals can grade as high as 68% Fe, but the crude ore mined in Canada grades between 30 and 44% Fe.

The Canadarm was a remote-controlled mechanical arm, also known as the Shuttle Remote Manipulator System (SRMS). During its 30-year career with NASA’s Space Shuttle Program, the robotic arm deployed, captured and repaired satellites, positioned astronauts, maintained equipment, and moved cargo.

Canadair Challenger, corporate executive aircraft developed and built in Canada. Exhaustive testing resulted in an advanced wing design, broad body and quiet, efficient engines. It carries up to 19 passengers at a normal cruise speed of 819 km/h.

The Canadian Council of Professional Engineers (CCPE)/Conseil canadien des ingénieurs (CCI), established in 1936, is the national organization of the provincial and territorial associations that governs the practice of engineering in Canada.

Cadmium (Cd) is a soft, ductile, silvery white metal that melts at 320.9°C and is present in the earth's crust at 0.1-0.5 parts per million. The most common cadmium MINERAL, greenockite (CdS), is generally found in zinc-bearing ores and is recovered as a by-product during processing.

 Insulin is the most potent hormone of fuel storage, affecting carbohydrate, fat and protein throughout the body. Acting through binding to receptors on cell membranes, the principal targets of insulin are in liver, fat and muscle.

The International Development Research Centre (IDRC) was established as a public corporation by Parliament in 1970 to support research designed to adapt science and technology to the specific needs of developing countries. The first chairman was Lester B. PEARSON.

Opting-Out originated as a device by which one or more provinces choose not to participate in a federal-provincial shared cost program; instead the province receives direct payment (in cash or tax room) of funds which would have been spent there.

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.

Consumers normally consider that the term "food additive" refers to almost all substances, primarily chemical in nature, added to foods during production, manufacture, packaging or storage.

As a thunderstorm grows, or a mature storm approaches, this electric field is reversed. In general, the lower part of a cloud is negatively charged; the upper portions, positively charged. A further positive charge is induced on the Earth's surface below a thunderstorm.

From earliest times it has been recognized that artificial light prolongs daytime activities. Relaxation and social interaction necessarily occurred after the day's work was done; therefore, indoor lighting has always had a special association with this aspect of living.