Electrochemical degradation of Mordant Blue 13 azo dye using boron-doped diamond and dimensionally stable anodes: influence of experimental parameters and water matrix.

In this work, the electrooxidation as environmentally clean technology has been studied to the degradation of Mordant Blue 13 azo dye (MB13) using boron-doped diamond (p-Si/BDD) and oxide ruthenium titanium (Ti/RuTiO (DSA)) anodes in various water matrices: distilled water (DW), hot tap water (HTW), and simulated wastewaters with (SWS) and without surfactant (SW). The influence of experimental parameters, such as current density, initial dye concentration, electrolysis time/specific charge, and pH on the MB13 degradation rate, current efficiency, and energy consumption, has been determined. The enhanced rate of both color and chemical oxygen demand (COD) removal in sulfate aqueous solutions with BDD was observed, which indicates that sulfate (SO) radicals along with OH ones might be responsible for the degradation process.

Evolutionary methods for variable selection in the epidemiological modeling of cardiovascular diseases.

Background: The redundancy of information is becoming a critical issue for epidemiologists. High-dimensional datasets require new effective variable selection methods to be developed. This study implements an advanced evolutionary variable selection method which is applied for cardiovascular predictive modeling.

Feasibility of incorporating all products of human waste processing into material cycling in the BTLSS.

The present study addresses the ways to increase the closure of biotechnical life support systems (BTLSS) for space applications. A promising method of organic waste processing based on "wet combustion" in hydrogen peroxide developed at the IBP SB RAS to produce fertilizers for higher plants is discussed. The method is relatively compact, energy efficient, productive, and eco-friendly.

Fluorinated Metal Phthalocyanines: Interplay between Fluorination Degree, Films Orientation, and Ammonia Sensing Properties.

In this work, the sensor response of MPcF (M = Cu, Co, Zn; = 0, 4, 16) films toward gaseous NH₃ (10⁻50 ppm) was studied by a chemiresistive method and compared to that of unsubstituted MPc films to reveal the effects of central metals and F-substituents on the sensing properties. A combination of atomic force microscopy and X-ray diffraction techniques have been used to elucidate the structural features of thin MPcF films deposited by organic molecular beam deposition. It has been shown that the sensor response of MPcF₄ films to ammonia is noticeably higher than that of MPc films, which is in good correlation with the values of binding energy between the metal phthalocyanine and NH₃ molecules, as calculated by the density functional theory (DFT) method.

Features of acoustic wave propagation in the Me/ZnO/Me/diamond waveguide structure.

The effect of mass loading on the phase velocities of the surface acoustic wave dispersion modes in the Me/ZnO/Me/diamond piezoelectric layered structure as a function of frequency, metallic, and piezoelectric layer thickness has been investigated. Aluminum, molybdenum, and platinum were considered as the metallic layer materials. It has been demonstrated that the change in the phase velocities substantially depends on the acoustic impedance of the metal layer and its thickness.

Climate-Induced Northerly Expansion of Siberian Silkmoth Range.

Siberian silkmoth ( Tschetv.) is a dangerous pest that has affected nearly 2.5 × 10 ha of "dark taiga" stands (composed of , and ) within the latitude range of 52°-59° N.

Topological Bound States in the Continuum in Arrays of Dielectric Spheres.

We consider Bloch bound states in the radiation continuum in periodic arrays of dielectric spheres. It is demonstrated that the bound states are associated with phase singularities of the quasimode coupling strength. That makes the bound states topologically protected and, therefore, robust against any variation of parameters preserving the periodicity and rotational symmetry about the array axis.