[Diagnosis and correction of hemostasis disorder during surgeries for bile duct diseases].

The aim of the study was to reduce the frequency of hemorrhagic complications in the surgical treatment of patients for diseases of bile ducts. Hemostatic state before, immediately after and on the following day after the operation was controlled by the data of frequency piezoelectric thromboelastography. It is established, that the application of tranexamic acid to promote incidence of hemorrhagic complications are reduced by 38.65%.

Temporal and seasonal variations of radiocaesium content in some plants from the western part of Ukrainian Polesye.

We present measurements of (137)Cs contamination for some of the berry plants and medicinal herbs growing in the western part of Ukrainian Polesye during 1996-2009. Basing on the calculations of the aggregated transfer factors, we classified the medicinal herbs into five groups according to their ability for accumulation of (137)Cs: very weak (T(ag) < 10(-3)), weak (10(-3) < T(ag) < 10(-2)), moderate (10(-2) < T(ag) < 5 × 10(-2)), strong (5 × 10(-2) < T(ag) < 10(-1)) and very strong (T(ag) > 10(-1)). The (137)Cs concentrations in the berry plants significantly decreased during the time of our monitoring and the rate of this decrease was much higher than that typical of the corresponding soils. This is because with time the (137)Cs in the soil was becoming less accessible for uptake by plant roots due to its fixation on micaceous clay minerals. The seasonal variations of the (137)Cs concentrations in the vegetative and generative organs of the plants revealed a good interdependence between the seasonal peculiarities of (137)Cs accumulation by the organs and the features of their vegetation period.

Critical behaviour of optical birefringence near the normal-incommensurate phase transition in [N(CH3)4]2ZnCl4 crystals under the influence of hydrostatic pressure.

We have estimated the Ginzburg number G governing crossover from the asymptotic to the classical critical behaviour near the normal-incommensurate phase transition in [N(CH(3))(4)](2)ZnCl(4) (TMAZC) crystals and the dependence of G on the hydrostatic pressure (0.1-330 MPa), following from the experimental data for the optical birefringence and the quantitative analysis of temperature derivatives of the birefringence in the framework of the approximation of weak Gaussian fluctuations. The Ginzburg number found experimentally for TMAZC is G ∼ 8 × 10(-3) at the atmospheric pressure and a considerable part of it is assumed to refer to structural defects. It is shown that the G value for TMAZC decreases with increasing hydrostatic pressure and, based on analysis of the literature birefringence data for Cs(2)CdBr(4) and Cs(2)HgBr(4) crystals, this behaviour might be expected to be generally typical for all the A(2)BX(4) family. The results obtained are discussed using a phenomenological theory of second-order structural phase transitions. In particular, they provide a basis for estimating the limits of the asymptotic critical region in TMAZC and demonstrate that the major part of the incommensurate phase should belong to the crossover region.