To analyze management and outcomes in patients with CHF managed by specialists in heart failure (HF) or general cardiologists/physicians in real-life clinical practice.
Survival rate, ...rehospitalization rate, general health condition, and the administered therapy were evaluated for HF patients with reduced LV ejection fraction at three years of discharge from cardiological hospitals. These patients had been included in a prospective, multicenter, observational study, "The Russian Hospital HF Registry" (RUS-HFR). The first group consisted of patients who were managed at a specialized HF department of the Federal Center and followed up at the outpatient stage by a cardiologist specializing in HF (Group 1, St.‑Petersburg; n =74). The other two groups (Group 2 and Group 3) included patients who were managed at other cardiological departments of the Federal Center (n=186) or the Regional Center (n=130) and subsequently followed up at the place of residence.
After the discharge from the hospital, 58-95 and 12-19% of RUS-HFR patients were followed up by a cardiologist or a physician, respectively, on an outpatient basis while 5-23% of patients did not visit a doctor at all. In three years, the survival rate of Group 1, 2, and 3 patients was 80 vs. 78 (р>0.05) vs. 52% (р0.05) vs. 100% (p1,2.
It is well-known that directional crystallization processes frequently occur in unsteady-state manner. One of such time-dependent crystallization regimes is the self-similar process characterizing by ...the scaled combination ξ/t between the spatial coordinate ξ (directed along the solidification axis) and time t. Such scaling relation usually establishes when the crystallization process is far from its initial stage t = 0. In this paper, we consider some approximate heuristic relations describing the self-similar solidification mode.
Recent breakthroughs in ultrafast photonics in the mid-IR help understand complex interactions of high-intensity mid-IR field waveforms with matter, offer new approaches for x-ray generation, enable ...mid-IR laser filamentation in the atmosphere, facilitate lasing in filaments, give rise to unique regimes of laser-matter interactions, and reveal unexpected properties of materials in the mid-IR range.
The effect of low-energy high-current electron beams on the structure of silumin has been studied. It has been found that the electron beam treatment leads to the formation of a heterogeneous ...multi-layer structure in the material. A columnar crystallization structure has been observed in the surface layer. The transverse dimensions of the columns are between 400 and 600 nm, whereas the second phase interlayer dimensions are between 80 and 100 nm. The transverse dimensions of the columns at a depth of 80 to 100 µm are 1.0-1.2 µm. The cause of the columnar structure is the thermoconcentration-capillary instability, which leads to the formation of vortices and the displacement of the second phase particles to the columnar boundaries. The considerable thickness of the columnar crystallization layer is caused by the fact that silicon and other alloying elements influence the dependence of liquid aluminum surface tension on temperature by introducing nonlinearity. As a result, there is an effect of the "thermal drill", i.e. the formation of vortices. The formed vortices stir the melt throughout the depth, and the downward flow of the liquid moves to the center of the bath at the cooling stage, which is manifested in an increase in the thickness of the columnar crystallization layer. It manifests itself in an increase in the thickness of the columnar crystallization layer. At depths over 100 µm, the fracture of silicon particles is observed as a result of differences in the elastic moduli and linear expansion coefficients of the aluminum matrix and the silicon plate.
The study examined the effects of millimeter electromagnetic waves at a frequency of 130 GHz corresponding to the molecular absorption and radiation spectra of NO and O
2
with the total exposition ...time of 6 h on tumor morphogenesis in 3- and 6-month-old tumor-prone BALB/c mice of both sexes. In experimental mice exposed to electromagnetic radiation, the development of cancer process was slowed down throughout the observation period; moreover, no macroscopic signs of the tumors were revealed. However, in contrast to control mice, experimental animals demonstrated the formation of pathological reactions reflected by hepatic biochemical indices accompanied by the development of dystrophic and microcirculatory alterations in the liver tissue.
Application of various criteria for evaluating the wettability of the surface of carbon fibers of Torayca T 300 3K brand was considered. A simulation of the carbon fiber impregnation in fabrication ...of a composite material was used to determine the thermodynamic parameters (surface energy, works of adhesion and cohesion) and the wetting angle for three kinds of promising polymeric binders. It was found that the best impregnation conditions for carbon fiber of Torayca T 300 3K brand (Cm12073 fabric) will be for the filament not subjected to thermal treatment because the capillary rise of the organic solvent simulating the polymeric binder decreases by 14% on removing the finishing oil. The presence of the Infutac layer fixer used to fabricate reflector segments raises the time of penetration of the polyurethane (with shape memory) and epoxy binders into the fabric sheet, makes the impregnation six times lower, and has no effect on the time of impregnation of carbon fibers with the silicone binder.
The self-similar and unsteady-state crystallization processes of binary melts with a mushy layer are considered. Two analytical methods of solution of the mushy layer nonlinear model with the moving ...phase transition boundaries are detailed. The obtained analytical solutions are in good agreement with experimental data.
PDF
