| ultrafiltració |
ultrafiltration (Separation of colloidal or very fine solid materials by filtration through microporous or semipermeable mediums) |
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| ultrasò |
ultrasound (Sound waves having a frequency above about 20,000 hertz) |
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| ungulat |
ungulate (Hoofed mammals, including the Artiodactyla and Perissodactyla) |
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| unitat de classificació de residus |
waste sorting unit (Centralized recycling centres to which waste materials are brought and where they are separated) |
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| unitat de silvicultura |
forestry unit (Any entity or group of individuals involved with the creation, management and conservation of an extensive area of woodland, often to produce products and benefits such as timber, clean water, biodiversity and recreation) |
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| unitat turística |
touristic unit (No definition needed) |
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| Unió Europea |
European Union (The 15 nations (Belgium, Denmark, France, Germany, Greece, Ireland, Italy, Luxembourg, the Netherlands, Portugal, Spain, the UK, Austria, Finland and Sweden) that have joined together to form an economic community with common monetary, political and social aspirations. The EU came into being on 1 November 1993 according to the terms of the Maastricht Treaty; it comprises the three European Communities, extended by the adoption of a common foreign and security policy which requires cooperation between member states in foreign policy and security and cooperation in justice and home affairs) |
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| urani |
uranium (A metallic element highly toxic and radioactive; used as nuclear fuel) |
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| urani enriquit |
enriched uranium (Uranium whose concentration of uranium-235, which is able to sustain a nuclear chain reaction, is increased by removing uranium-238) |
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| urbanització |
urbanization (The state of being or becoming a community with urban characteristics) |
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| usos de l'energia nuclear |
nuclear energy use (Nuclear energy is employed in the industrial sector, in the production of other energy types, in the medical and scientific research field, in transportation, in the production of nuclear weapons, etc.) |
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| utilitat pública |
public utility (An enterprise concerned with the provision to the public of essentials, such as electricity or water) |
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| utilització del poder calòric |
utilisation of calorific value (Calorific value is the heat per unit mass produced by complete combustion of a given substance. Calorific values are used to express the energy values of fuels; usually these are expressed in megajoules per kilogram. They are also used to measure the energy content of foodstuffs; i.e. the energy produced when the food is oxidized in the body. The units here are kilojoules per gram. Calorific values are measured using a bomb calorimeter (apparatus consisting of a strong container in which the sample is sealed with excess oxygen and ignited electrically. The heat of combustion at constant volume can be calculated from the resulting rise in temperature)) |
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| vacances |
holiday (1. A period in which a break is taken from work or studies for rest, travel or recreation 2. A day on which work is suspended by law or custom, such as a religious festival, bank holiday, etc.) |
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| vaixell |
ship (A vessel propelled by engines or sails for navigating on the water, especially a large vessel that can not be carried aboard another, as distinguished from a boat) |
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| vaixell de doble casc |
twin-hull craft (Oil tank vessels provided with a double-hull to meet the regulatory safety requirements in oil transportation. Requirements include minimum values for depths and breadth of double bottoms. Also called double-hull tank vessel) |
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| vaixell de pesca |
fishing vessel |
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| vaixell petrolier |
oil tanker (A very large ship which carries crude oil or other petroleum products in big tanks) |
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| vall |
valley (Any low-lying land bordered by higher ground; especially an elongate, relatively large, gently sloping depression of the Earth's surface, commonly situated between two mountains or between ranges of hills or mountains, and often containing a stream with an outlet. It is usually developed by stream erosion, but may be formed by faulting) |
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| valor agronòmic |
agronomic value (The monetary or material worth at which buyers and sellers agree to do business for agricultural goods and services) |
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