| background level (Term used in a variety of situations, always as the constant or natural amount of a given substance, radiation, noise, etc.) |
nivell de base |
|
| background noise (Noise coming from source other than the noise source being monitored) |
soroll de fons |
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| background radiation (Radiation resulting from natural sources, as opposed to man-made sources, and to which people are exposed in everyday, normal life; for example from rocks and soil) |
radiació de fons |
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| bacterial bed (A device that removes some suspended solids from sewage. Air and bacteria decompose additional wastes filtering through the sand so that cleaner water drains from the bed) |
llit bacterià |
|
| bactericide (An agent that destroys bacteria) |
bactericida |
|
| bacteriological pollution (Contamination of water, soil and air with pathogen bacteria) |
contaminació bacteriològica |
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| bacteriology (The science and study of bacteria) |
bacteriologia |
|
| bacterium (Group of single-cell micro-organisms, the smallest of the living organisms. Some are vital to sustain life, while others are responsible for causing highly dangerous human diseases, such as anthrax, tetanus and tuberculosis. Bacteria are found everywhere, in the soil, water and air) |
bacteri |
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| balance (An equality between the sums total of the two sides of an account, or the excess on either side; economic) |
balanç |
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| balance of matter (A calculation to inventory material inputs versus outputs in a process system) |
balanç de matèria |
|
| balancing of interests (Considering, weighing or counterbalancing the competing political or financial concerns of different parts of society, including industries, consumers, trade unions and other groups or organizations) |
equilibri d'interessos |
|
| bank (The sloping side of any hollow in the ground, especially when bordering a river; land) |
ribera |
|
| bank protection (Engineering work which aims at the protection of banks of a river, or slopes of embankments along it, from erosion by the current of flow, from floods, etc.) |
protecció de les riberes |
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| banking (Transactional business between any bank, an institution for safeguarding, exchanging, receiving and lending money, and that bank's clients or customers) |
activitat bancària |
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| barium (A soft silvery-white metallic element of the alkaline earth group. It is used in bearing alloys and compounds are used as pigments) |
bari |
|
| barrier beach (An elongated sand or shingle bank which lies parallel to the coastline and is not submerged by the tide. If it is high enough to permit dune growth it is termed a barrier island) |
cordó litoral |
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| barrier reef (An elongated accumulation of coral lying at low-tide level parallel to the coast but separated from it by a wide and deep lagoon or strait. The coral is thought to have formed initially on a flat surface: then as the sea-level rose in post-glacial times, thereby submerging the irregular wave-cut platform, the coral growth kept pace with the rising ocean level, so creating the great thickness witnessed today in such places as the Great Barrier Reef off the East coast of Queensland, Australia. This stretches for more than 1900 km and varies in width from about 30 km to 150 km) |
recif |
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| baseline monitoring (Monitoring of long-term changes in atmospheric compositions of particular significance to the weather and the climate) |
vigilància bàsica |
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| basic food requirement (The minimum nutriments deemed necessary for a person of a particular age, gender, physiological condition and activity level to sustain life, health and growth) |
necessitat alimentària bàsica |
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| basicity (The state of a solution of containing an excess of hydroxyl ions) |
caràcter bàsic |
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