[The effects of UV-irradiation of barley plants on the morphophysiological parameters and productivity of the offsprings].

In a greenhouse experiment effects have been studied the UV-B-irradiation of barley (intensity of biologically active UV-B-radiation was 0.15, 0.29 and 0.45 W/m2) on the morphophysiologic parameters, productivity and reproductive sphere of offsprings of two succeeding generations. It has been shown that along with a decrease in the specific leaf mass and biomass M1-generation plants exhibited an increase in the stem height and assimilative leaf area. The reduction of grain yield in offsprings of the first post-radiation generation was mainly caused by the reduced size in the reproductive organs and by reduced number of caryopsides in a ear. The observed effects were independent of the UV-B exposure levels to the precursors. The aftereffect of UV-B-irradiation for M2-generation plants shown itself as changes in the specific leaf area, less pronounced compared to the precursors, and reduction in the vegetative mass and grain yield, most significant in offsprings of plants exposed to the maximum UV-B levels. Disturbances in the reproductive sphere appeared as reduction in the size of developing grains. The data derived suggest that long-term effects of UV-B-irradiation are possible not only in the first but also in the second generation of impacted plants.

[Long time combined action of cadmium and ultraviolet radiation on barley plants]. / Osobennosti dlitel'nogo sovmestnogo deistviia kadmiia i ul'trafioletovogo izlucheniia na iachmen'.

In a greenhouse experiment the development of biomass and grain yield was studied under a long-time combined action of medium-wave UV-radiation and cadmium (exposure levels of the agents were, respectively, 0.65-1.30 W/m2, 5 and 50 mg/kg of soil). The influence of the metal on the UV-radiation induced inhibition of the vegetative mass development was found to be dependent on the duration of stress: with increase in the exposure time the cadmium ability for cushioning negative effects of irradiation decreases. Simultaneously the contribution of the metal and its interaction with UV-radiation to the variability in the observed indicator (biomass) becomes much less significant than that of irradiation. Considerable independent of cadmium concentration reduction in the grain yield becomes evident at a rate of medium-wave UV-radiation intensity of 0.65 W/m2, whereas at UV-radiation exposure levels of 1.30 W/m2 and the heavy metal concentration of 50 mg/kg in soil practically total inhibition of grain productivity occurred. As for grain formation, relative effects of irradiation were somewhat higher than these of cadmium and its interaction with UV-radiation.

[The rehabilitation of duodenal peptic ulcer patients who participated in the cleanup of the aftereffects of the accident at the Chernobyl Atomic Electric Power Station]. / Reabilitatsiia bol'nykh iazvennoi bolezn'iu dvenadtsatiperstnoi kishki, uchastvovavshikh v likvidatsii posledstvii avarii na Chernobyl'skoi AES.

These patients require individual rehabilitation after determination of the unspecific reactivity of the body with prodigiosane. Depending on the results of this test the patients were treated with drugs stimulating the immune response in case of hyporeactivity, with adaptogens in normoreactive course of the disease and drugs modulating B-cell immunity in hyperreactivity. This approach allows to reduce hospital time, enhances remission.