Multicriteria Collision Risk Ranking of Aircraft by Data from an Onboard Radar Station

Journal of Communications Technology and Electronics - An option of multicriteria collision risk ranking of aircraft by data from an onboard radar station (OBRS) is proposed. This method can be...     

Multipurpose Tracking in Multiposition Radar Systems

Journal of Communications Technology and Electronics - An algorithm for multipurpose tracking in multiposition radar systems is considered, and its effectiveness is evaluated.     

Thermal conductivity of a chemically reacting ternary gas mixture

On the basis of the thermodynamics of irreversible processes, an expression is derived for the thermal conductivity of a chemically reacting gas mixture.Notation x_i molar fraction of i-th component - J_u energy flux - c_i mass fraction of i-th component - J_q heat flux - J_i mass flux of i-th component - T absolute temperature - _i molar chemical potential of i-th component - L_ik, L_uu, L_ui phenomenological coefficients, associated respectively with the transfer of mass and energy and with the superimposed effects - X_u and X_k thermodynamic forces associated with the mass and energy fluxes - h_i enthalpy of i-th component - S entropy of i-th component - D_ij diffusion coefficient of a multicomponent mixture - D _i ^T thermodiffusion coefficient of i-th component in a multicomponent system - ₀(O, p) chemical potential in standard state - density - h number density of mixture particles - h_j number density of particles of i-th component - m_i molecular weigh of i-th component - p pressure of mixture - v_i specific volume of i-th component - H heat of reaction - r number of component of mixture - R gas constant - d_t thermodiffusion coefficient of a binary mixture     

Thermal conductivity of gas mixtures reacting at a finite rate

On the besis of an earlier investigation [2], it is noted that, in the presence in a gas mixture of chemical reactions proceeding at a finite rate, the effective thermal conductivity is not only a function of temperature and pressure (as pointed out in [3]) but also a function of the coordinates. It is concluded that the experimental data obtained for a certain measuring-tube geometry are conditional and may differ substantially from those obtained for another geometry.     

Serial measurements of left ventricular ejection fraction by radionuclide angiography early and late after myocardial infarction

1-Acyl-2-succinyl glycero-3-phosphorylcholine (GPC) was synthesized and its properties described. Although 1-acyl-2-succinyl GPC is a good substrate for succinate dehydrogenase, experiments on the incorporation of [2,3-14C] succinate into mitochondrial lipids gave no evidence to indicate that it is an intermediate in the enzymic oxidation of succinate to fumerate, as has been suggested earlier.     

Relation of α2-Antiplasmin Genotype and Genetic Determinants of Fibrinogen Synthesis and Fibrin Clot Formation with Vascular Endothelial Growth Factor Level in Axial Spondyloarthritis

Objective: Coagulation and fibrinolysis are interrelated with the expression of vascular endothelial growth factor (VEGF), which frequently is increased in axial spondyloarthritis (axSpA). We tested whether (i) α₂-antiplasmin (A2AP) Arg6Trp, (ii) fibrinogen, factor XIII A-subunit or B-subunit genotypes are associated with VEGF levels and assessed whether the known association between elevated VEGF and radiographic spinal progression in axSpA depends on genetic background. Methods: One hundred and eighty-six axSpA patients from the German Spondyloarthritis Inception Cohort were genotyped, characterized for VEGF levels, and statistically analyzed. The association between VEGF and radiographic spinal progression was assessed in dependence on genetic background in stratified analyses. Results: A2AP 6Trp carriage was associated with VEGF elevation (OR: 2.37, 95% CI: 1.06–5.29) and VEGF levels (6Trp, 455 ± 334 pg/mL; 6Arg/Arg, 373 ± 293 pg/mL; p < 0.008). Association between elevated VEGF and radiographic spinal progression in axSpA (OR: 3.11, 95% CI: 1.02–8.82) depended remarkably on the fibrinogen (FGA) genotype. When considering axSpA patients with elevated VEGF, in FGA rs6050A>G wild types, 42.1% of patients (8 of 19) progressed, while in G-allele carriers, no radiographic progression happened (0 of 13) (p < 0.04). Conclusions: The A2AP Arg6Trp genotype seems to influence VEGF levels in axSpA. The predictive value of VEGF elevations in respect of radiographic spinal progression in axSpA depends on FGA genotypes.     

Academician Andrey Mikaelian — the founder of waveguide ferrite technology

The full Member of Russian Academy of Sciences, Doctor of Engineering, Professor, laureate of Lenin prize, State prize of the Russian Federation, State prize of the Armenian Soviet Socialist Republic and Lomonosov prize, the chevalier of SPIE Gold Medal (the higher award of the International Society for Optical Engineering), A.S. Popov Gold Medal of the Russian Academy of Sciences-such was the incomplete list of regalia and awards of A.L. Mikaelian, the Chief scientist of JSC “Radio Engineering Corporation “Vega”.