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Vol 44, No 6 (2017)
- Year: 2017
- Articles: 7
- URL: https://journals.rcsi.science/1068-3356/issue/view/14104
Article
Effect of decreasing glucose concentration in blood plasma after blood saturation with oxygen
Abstract
It was experimentally detected that the glucose concentration in blood plasma decreases after venous blood saturation with oxygen (oxygenation process). This effect was recorded for several tens of donor blood samples using IME-DC (Germany) and Optium Omega (USA) portable glucometers, as well as an optical method using holographic sensors based on hydrogel polymer films, independent of the presence of oxygen in plasma. During blood oxygenation in the organism, glucose is redistributed between blood plasma and erythrocyte cytoplasm in favor of cytoplasm. The observed effect is explained by an increase in the electric field during blood oxygenation in lipids of the erythrocyte cytoplasmic membrane, which orients dipoles of asymmetric glucose molecules along the normal to the membrane surface. This results in erythrocytemembrane permeability asymmetry.
155-158
Advanced polyimide varnish for optical fiber coating fabrication
Abstract
Using one-step high-temperature polycondensation, soluble polyimide based on 9,9-bis-(4’-aminophenyl) fluorene and 3,3’, 4,4’-diphenyl oxide tetracarboxylic acid dianhydride is synthesized. Polyimide varnishes inN-methyl-2-pyrrolidone are prepared, and technological conditions of their deposition during fiber drawing are studied. A polymer coating thickness over 6 μm is achieved for a single application. It is demonstrated that the developed coating almost does not degrade for a long time at temperatures to 250 °C and completely protects the optical fiber surface from water penetration.
159-162
On the discharge in laser plasma in an external electric field
Abstract
The possibility of creating discharge in laser plasma in an external electric field with quasi-static current generation along the field is discussed. The knowledge of the quasi-static current generation mechanism in laser plasma, associated with the rarefaction shock wave (RSW), allows the determination of the spatial distribution of these currents during laser irradiation of a planar target. Having included the (planar or cylindrical) target into an external contour, we propose a discharge scheme in laser plasma, where the discharge current increases during the laser pulse.
163-167
Some physical properties of zirconium and molybdenum oxide nanostructures produced by metal laser ablation in water
Abstract
A number of results of experimental studies of physical properties of nanostructures of oxides of transition metals, i.e., zirconium (Zr) and molybdenum (Mo), obtained by laser ablation of metal targets in water are presented. The structure, morphology, and some optical characteristics are studied. It is shown that Zr and Mo oxides are synthesized under these conditions mostly as amorphous masses containing particles less than 1–2 nm in size, of which large nanostructures and hollow quasi-spheres are formed.
168-172
Observation of the ionization wave and the shock wave ahead of the plasma jet generated in the plasma focus discharge
Abstract
An ionization wave travelling ahead of the shock wave of the plasma jet, propagating in residual gas (nitrogen) of the plasma focus discharge, is detected by the laser-interferometry method at the plasma focus. Radial and axial distributions of electron densities of the shock wave and plasma jet are measured.
173-176
Inverse problem of the event reconstruction in the LORD experiment using two satellites
Abstract
Using the random search method, the solution of the inverse problem of event reconstruction when detecting ultrahigh-energy cosmic rays (UHECR) in more complex LORD experiment versions using two lunar satellites revolving in almost the same orbit, but spaced to a sufficient distance, is considered. In the case of the detection by two satellites, the time delay between signals of either satellite is also measured. This makes it possible to achieve a higher accuracy in the solution of the inverse problem of event reconstruction and to determine the direction to the particle source, which is impossible in experiments with one satellite.
177-181
Tungsten erosion in tokamak at current disruption
Abstract
A theoretical description is suggested for the process of tungsten erosion under current disruption in tokamak with lacking screening plasma layer. Experimental observations of substantial melting, formation of multiple small craters and erosion of a tungsten diaphragm in T-10 tokamak after current disruption are presented. Experimental observations were compared to estimates based on the model suggested. The results are used for forecasting erosion of the tungsten ITER diverter.
182-186