[Autokeratoplasty in perforation of the ectatic leukoma of the only functionally perspective eye].

Treatment and rehabilitation of patients with destructive lesions of the cornea is a serious problem for ophthalmologists due to severity of the outcome of the disease - the formation of leukomas with a persistent decrease in vision, or even a complete loss of visual functions. The article presents a clinical case of a patient with posttraumatic ectaticized leukoma of the functionally promising eye, which course was complicated by perforation. The authors, in the absence of the donor cornea, faced a complex clinical task - the risk of functional and anatomical death of the single eyeball in the absence of adequate care for the patient.

Geogenic and anthropogenic impacts on indoor radon in the Techa River region.

Indoor radon concentration was studied in the 14 settlements located near the Techa River, which was contaminated by radioactive wastes in 1950-s. Results of the radon survey were used for analysis of the relationship between the indoor radon and main geologic factors (Pre-Jurassic formations, Quaternary sediments and faults), local geogenic radon potential and anthropogenic factors. Main influencing factors explain 58% of the standard deviation of indoor radon concentration.

Variance of indoor radon concentration: Major influencing factors.

Variance of radon concentration in dwelling atmosphere is analysed with regard to geogenic and anthropogenic influencing factors. Analysis includes review of 81 national and regional indoor radon surveys with varying sampling pattern, sample size and duration of measurements and detailed consideration of two regional surveys (Sverdlovsk oblast, Russia and Niška Banja, Serbia). The analysis of the geometric standard deviation revealed that main factors influencing the dispersion of indoor radon concentration over the territory are as follows: area of territory, sample size, characteristics of measurements technique, the radon geogenic potential, building construction characteristics and living habits.

[Preservative-free betaxolol for POAG patients: evaluation of hypotensive effect and ocular surface safety].

Aim: To evaluate ocular surface changes in patients with primary open-angle glaucoma (POAG) as well as the hypotensive effect of preservative-free betaxolol eye drops.

Material And Methods: A total of 22 patients (42 eyes) aged 55-83 with POAG stage I-II were examined. All of them were switched from betaxolol b.

Collaborative investigations on thoron and radon in some rural communities of Balkans.

This paper deals with the results of the first-field use in the Balkans, i.e. Serbia and Republic of Srpska (Bosnia and Hercegovina), of a passive polycarbonate Mark II type and poliallyldiglycol carbonate (Cr-39) alpha track detectors sensitive to thoron as well as to radon.

Radon measurements--discussion of error estimates for selected methods.

The main sources of uncertainties for grab sampling, short-term (charcoal canisters) and long term (track detectors) measurements are: systematic bias of reference equipment; random Poisson and non-Poisson errors during calibration; random Poisson and non-Poisson errors during measurements. The origins of non-Poisson random errors during calibration are different for different kinds of instrumental measurements. The main sources of uncertainties for retrospective measurements conducted by surface traps techniques can be divided in two groups: errors of surface (210)Pb ((210)Po) activity measurements and uncertainties of transfer from (210)Pb surface activity in glass objects to average radon concentration during this object exposure.

Field experience with soil gas mapping using Japanese passive radon/thoron discriminative detectors for comparing high and low radiation areas in Serbia (Balkan Region).

Based on results of fieldwork in the Balkan Region of Serbia from 2005 to 2007, soil gas radon and thoron concentrations as well as gamma dose rates were measured. Campaigns were conducted in two different geological regions: Niska Banja, considered a high natural radiation area, and Obrenovac around the TentB Thermal Power Plant (TPP), a low natural radiation area. Radon and thoron gas measurements were made by using two types of Japanese passive radon/thoron detectors, which included GPS data and gamma dose rates.

Comparison of retrospective and contemporary indoor radon measurements in a high-radon area of Serbia.

In Niska Banja, Serbia, which is a high-radon area, a comparison was made between two retrospective radon measuring methods and contemporary radon measurements. The two retrospective methods derive the radon concentrations that occurred in dwellings over longer periods in the past, based on the amount of trapped (210)Po on the surface of glass objects (surface traps, ST) or in the bulk of porous materials (volume traps, VT). Both surface implanted (210)Po in glass objects and contemporary radon in air were measured in 46 rooms, distributed in 32 houses of this radon spa-town, using a dual alpha track detector configuration (CR-39 and LR115) and CR-39 track etched detectors, respectively.

Defective tumor vascularization induced by metastasin 1 expression.

It has been proposed that metastasin 1 (mts1), a member of the S100 Ca(2+)-binding protein family, may play a role in tumor progression and metastasis. In order to test this possibility, we have performed gene transfer experiments using a human sense mts1 expression vector and human MCF7 malignant epithelial cells which do not express endogenous mts1. In vitro, mts1 expression did not modify proliferative or invasive properties of transfected MCF7 cells.

[Nuclear apparatus and differentiation of salivary glands of larvae of Drosophila virilis. 1. Change in DNA and RNA content in different cell structures at the stage of secretion formation].

Changes in the content of DNA, RNA and secretion products have been studied in chromosomes, nucleoli and cytoplasm of the salivary gland cells in the III instar larvae D. virilis. The DNA content doubles twice: 20--30 and 30--40 hrs after the second moult.