Bioindication of the anthropogenic effects on micropopulations of Pinus sylvestris, L. in the vicinity of a plant for the storage and processing of radioactive waste and in the Chernobyl NPP zone.

Results of a comparative analysis of the frequency and spectrum of cytogenetic anomalies are presented for reproductive (seeds) and vegetative (needles) samples taken from Scotch pine (Pinus sylvestris, L.) micropopulations growing at sites with differing levels of radioactive contamination in the Chernobyl NPP 30 km zone, and at the location of a facility for the processing and storage of radioactive wastes (the 'Radon' LWPE, near the town of Sosnovy Bor in the Leningrad Region). The data obtained indicate the presence of genotoxic contaminants in the environment of the tree micropopulations. Chemical toxins make the main contribution to the environmental contamination in the Sosnovy Bor area as compared with the influence of ionising radiation in the Chernobyl 30 km zone. The higher radioresistance of seeds of Scotch pine growing on the area of the 'Radon' LWPE and in the centre of Sosnovy Bor town was revealed with acute gamma-radiation.

[Ultrasound study in the evaluation of the knee joint in osteoarthrosis deformans]. / Ul'trazvukovoe issledovanie v otsenke sostoianiia kolennogo sustava pri deformiruiushchem osteoartroze.

The paper analyzes a group of 50 patients aged 25 to 55 years who had osteoarthrosis deformans of the knee joint. A control group comprised 10 healthy individuals of the same age. All the patients underwent routine roentgenography in 2 projections and ultrasonography of the knee joint by the procedure of L. Rubaltelli. The main criteria of sonographic destructive joint changes correlate with X-ray signs. The stage of the disease is defined by the magnitude of joint structural changes and by the sequence of their appearance, as shown by ultrasound study.