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| Terms for subject Environment (5179 entries) |
| rastre de plaguicida | pesticide pathway (The specific or known route or vector of any chemical substance released into the environment to prevent, destroy or mitigate any pest that is directly or indirectly detrimental to harvest crops and other human interests) | |
| reabsorció | resorption (Absorption or, less commonly, adsorption of material by a body or system from which the material was previously released) | |
| reacció cinètica | reaction kinetics (That branch of physical chemistry concerned with the mechanisms and rates of chemical reactions) | |
| reacció fotoquímica | photochemical reaction (Chemical reaction which is initiated by light of a specific wavelength. In an environmental context an example is the potential action of ultraviolet light on CFCs which may bring about the detrimental degradation of the ozone layer. Photochemical reactions initiate the process of photosynthesis in which plants convert carbon dioxide into sugars, which are incorporated into cell materials) | |
| reacció nuclear | nuclear reaction (A reaction involving a change in an atomic nucleus, such as fission, fusion, neutron capture, or radioactive decay, as distinct from a chemical reaction, which is limited to changes in the electron structure surrounding the nucleus) | |
| reacions químiques | chemical reaction (A change in which a substance is transformed into one or more new substances) | |
| reactor | reactor (A device that introduces either inductive or capacitive reactance into a circuit, such as a coil or capacitor) | |
| reactor nuclear | nuclear reactor (Device which creates heat and energy by starting and controlling atomic fission) | |
| reactor ràpid | fast reactor (Nuclear reactor which produces more fissile material than it consumes, using fast-moving neutrons and making plutonium-239 from uranium-238, thereby increasing the reactor's efficiency) | |
| realització de beneficis | seizure of profits (The official or legally authorized act of taking away monetary gain or surplus resulting from investments or property or from returns, proceeds or revenue in a business or business transaction) | |
| reallotjament en nous habitatges | rehousing (To provide with new or different housing) | |
| reblaniment | softening (Reduction of the hardness of water by removing hardness-forming ions (chiefly calcium and magnesium) by precipitation or ion exchange, or sequestering them as by combining them with substances such as certain phosphates, that form soluble but non-ionized salts) | |
| rebliment de dipòsit | silting up (The filling or partial filling with silt of a reservoir that receives fine-grained sediment brought in by streams and surface runoff) | |
| rebliment de mines | mine filling (Filling of disused mines with soil, crushed stone, or waste materials in order to restore the geological, agricultural and landscape features of the concerned area) | |
| rebliment sanitari | sanitary landfill (An engineered method of disposing of solid waste on land in a manner that protects the environment, by spreading the waste in thin layers, compacting it to the smallest practical volume and covering it with compacted soil by the end of each working day or at more frequent intervals if necessary) | |
| rebuig de plàstics i polímers | plastic waste (Any discarded plastic (organic, or synthetic, material derived from polymers, resins or cellulose) generated by any industrial process, or by consumers) | |
| recerca | research (Scientific investigation aimed at discovering and applying new facts, techniques and natural laws) | |
| recerca aplicada | applied research (Research directed toward using knowledge gained by basic research to make things or to create situations that will serve a practical or utilitarian purpose) | |
| recerca bibliogràfica | literature study (The identification, description, analysis and classification of books and other materials used or consulted in the preparation of a work) | |
| recerca científica | scientific research (Systematic investigation to establish facts or principles concerning a specific scientific subject) |