Science & Technology | The Canadian Encyclopedia

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  • Article

    VIA Rail Canada Inc.

    In 1981 VIA cancelled or reduced numerous routes in an attempt to make passenger service more efficient. Services in parts of the country were seriously affected and the Liberal government was widely criticized. A nonconfidence vote over the issue in October 1981 was won by the government.

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  • Macleans

    Viagra Craze

    This article was originally published in Maclean's Magazine on May 4, 1998. Partner content is not updated.In December, 1994, Lorne had just turned 40 and life was good. Married, he had two young children, a house near Vancouver and a job he enjoyed. Then disaster struck: as he changed a tire on his car beside a roadway, another automobile hit him.

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  • Macleans

    Viagra Hits Canada

    This article was originally published in Maclean’s magazine on March 22, 1999. Partner content is not updated. Bill Smith, a 55-year-old heavy-machine operator from Fredericton, knows these are his salad days revisited. As one of 500 Canadian men participating in the clinical trials of the impotency drug Viagra, he has been getting samples for two years. "They're free, so why not use them?" he says.

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  • Article

    Victorian Order of Nurses

    Victorian Order of Nurses for Canada is a national, nonprofit, community-health organization that provides nursing care in the home, particularly for the elderly and chronically ill.

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  • Article

    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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  • Article

    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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  • Article

    Waste Reduction

    The "3Rs Hierarchy of Waste Management" encourages people to reduce, reuse and recycle before considering other options for solid waste management. Reduction is at the top of the hierarchy because reducing waste (not creating waste in the first place) is the most efficient way to handle waste.

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  • Article

    Water-Borne Disease

    These organisms usually occur in water contaminated with sewage (eg, especially bird and mammal excrement) or by infected persons or animals.

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  • Article

    Water Distribution System

    Water Distribution System, a provincially regulated network used to distribute water from a central location to a location of end use.

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  • Article

    Water Pollution

    Water pollution occurs when discharges of energy or materials degrade the quality of water for other users, including both humans and wildlife. Pollution can affect inland waters such as lakes, rivers and groundwater, as well as coastal marine waters.

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  • Article

    Water Treatment

    Water Treatment, the physical and chemical processes used to ensure water's quality for its intended use. Minimum standards for drinking water are set by environmental agencies while industries have their own guidelines.

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  • Article

    W.D. Lawrence

    W.D. Lawrence, 2548 ton square-rigged sailing ship built in 1874 in Maitland, NS. It was designed and built by William Dawson Lawrence, who earned substantial profits from the ship until 1883, when he sold it to a Norwegian.

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  • Article

    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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  • Article

    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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  • Article

    Weather Modification

    Weather modification has been used in an attempt to increase rainfall and snowfall, to suppress hail, to clear fogs, to modify tropical cyclones and to suppress lightning. The term "weather modification" is not normally used to describe inadvertent changes in our WEATHER.

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