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RSP (Radioecological Software Package) is an interactive support system that simulates the behaviour of radionuclides in semi-natural environments and the consequences on the population in terms of the external exposure. RSP consists of three modules: the first one, soil mobility, simulates the vertical transport of radionuclide in soil using the mathematical model RABES. The second module, soil-to-plant transfer, simulates the radionuclide soil-to-plant transfer process using the mean soil concentration in the root zone and values of soil-to-plant transfer factor reported in the literature. Soil properties, vegetation types and environmental conditions are taken into consideration in the simulation process. In the third module, dose assessment, the dose-rate factor in air at a height of 1 m above ground can be calculated for sources distributed in a slab of finite thickness and sources which are exponentially distributed with depth. The calculations are performed using DAGES Model, a Monte Carlo algorithm developed to simulate the photon transport for the soil/air configuration. A free copy of RSP can be downloaded from the web site: http://imasl-apat.unsl.edu.ar. [Copyright &y& Elsevier]

Reviews the LB 506 monitor which measures all types of radioisotopes.

Introduces a new brochure from Icon Services Inc. describing the uses of stable, nonradioactive isotopes in research. People to be interested in the brochure including researchers using mass spectrometric and nuclear magnetic resonance techniques.