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| Terms for subject Environment (6533 entries) |
| răspândire geografică a populaţiei | geographical distribution of population (The number of inhabitants in or spread across designated subdivisions of an area, region, city or country) | |
| răspundere extinsă a producătorilor | extended producer responsibility | |
| răspuns în caz de dezastre | disaster response | |
| raster | raster (One of the two major types of internal data organization used in GIS. Raster systems superimpose a regular grid over the area of interest and associate each cell-or pixel, to use the image term- with one or more data records. The values associated with each grid cell may represent either real values or any scalar or nominal data values associated with the cell coordinates. Among the strengths of the raster method is its ability to accept data directly from remote sensing systems and to represent transitional information. Raster systems tend to be relatively storage-intensive and this imposes practical limits on the area of coverage, the resolution, or both of these. Capacity constraints are, however, becoming less significant as computer memory and storage become more powerful and as data compression techniques become more readily available) | |
| raster în vector | raster to vector (Methods to convert remotely sensed raster data to vector format. A number of raster-to-vector and vector-to-raster conversion procedures have been developed and introduced to current releases of many GIS packages) | |
| răsturnare | overturn (The circulation, especially in the fall and spring, of the layers of water in a lake or sea, whereby surface water sinks and mixes with bottom water; it is caused by changes in density differences due to changes in temperature, and is especially common wherever lakes are icebound in winter; limnology) | |
| rața moțată | comb duck | |
| râu | river (A stream of water which flows in a channel from high ground to low ground and ultimately to a lake or the sea, except in a desert area where it may dwindle away to nothing. A river and all its tributaries within a single basin is termed a drainage system) | |
| rază de tragere | shooting range (Area designed for target shooting) | |
| război | war (A conflict or a state of hostility between two or more parties, nations or states, in which armed forces or military operations are used) | |
| război ecologic | environmental warfare (The direct manipulation or destruction of ecological resources as either a political threat or for actual military advantage) | |
| raze X | X ray (A penetrating electromagnetic radiation, usually generated by accelerating electrons to high velocity and suddenly stopping them by collision with a solid body, or by inner-shell transitions of atoms with atomic number greater than 10; their wavelength ranges from about 10(-5) angstrom to 10 angstroms, the average wavelength used in research being 1 angstrom) | |
| reabilitare | rehabilitation (A conservation measure involving the correction of past abuses that have impaired the productivity of the resources base) | |
| reabilitare a sitului | site rehabilitation (The restoration of the ecological quality of an area or location) | |
| reabilitarea instalaţiilor | installation restoration (The process of repairing or reconstructing an edifice in order to return it to its original condition) | |
| reacţie chimică | chemical reaction (A change in which a substance is transformed into one or more new substances) | |
| reacţie fotochimică | 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) | |
| reacţie nucleară | 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) | |
| 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) |