Introduction Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are associated with an increased inflammation and oxidative stress ( 16 ). Exhaled breath analysis has enormous potential as an easy non-invasive mean of monitoring
Methods of monitoring low plutonium concentration in the inner and outer atmosphere are analyzed and compared. It is shown that monitors based on the gross alpha counting of air filters are not sensitive enough to measure reliably plutonium activities below 1 MPC. A spectrometric discontinuously operating monitor using a gridded ionization chamber and a membrane filter having 70 cm2 active area is described. Plutonium activities of the order of 0.01 MPC /1 mBq.m–3/ can be measured by the spectrometer at 1 h sampling and 1 h counting time.
Szigeti, F., C. Vera and Z. Varga. 2002. Nonlinear system inversion applied to ecological monitoring. 15-th IFAC World Congress on Automatic Control , Barcelona 2002 (full paper, accepted).
Nonlinear system inversion applied to
Authors:K. Nielsen, K. Mattson, D. Kelly, and L. Bennett
As part of Canada’s international commitment for the collective defence of allied nations, nuclear submarines from allied
nations berth at three approved locations on both east and west coasts of Canada. In the case of any untoward event, a nuclear
emergency response (NER) organisation has been established. In addition, regular sampling of the coastal environment is undertaken
as the Environmental Radionuclide Monitoring Programme (ERMP). This continuing effort consists of a long-term programme and
a visit sub-programme. In the former, samples are ocean sediment, seawater, aquatic plants and sealife; in the latter, samples
are seawater taken before, during and after each visit. Samples are collected according to a prescribed schedule and follow
a chain of custody to the accredited laboratory in the SLOWPOKE-2 Facility at RMC. Counting and analyses are done by gamma-ray
spectroscopy by the Analytical Services Group (ASG) at RMC. With most results below detection limit, the safety of the NPV
visits is assured.
Environmental radiation monitoring in Korea can be categorized as (1) nationwide monitoring program and (2) monitoring program for nuclear facilities. The former is designed to quickly detect any abnormal situation in environmental radioactivity levels. The latter has the objective of evaluating environmental radioactivity levels resulting from the operation of nuclear facilities. This paper describes the two monitoring programs, how they are implemented, items of being measured, analytical techniques, quality control programs and R&D activities associated with the monitoring. Also, some of the latest data obtained by the monitoring programs are introduced.