Composites Based on Polyaniline and Activated IR-Pyrolyzed Polyacrylonitrile As Promising Supercapacitor Electrode Materials

Russian Journal of Applied Chemistry - A method has been developed for synthesis of a composite coating based on polyaniline by introducing dispersed IR-pyrolyzed polyacrylonitrile, activated by...     

Synthesis of Iron and Cobalt Nanoparticles in an IR-Pyrolyzed Chitosan Matrix

Russian Journal of Physical Chemistry A - Metal–carbon nanocomposites IR-CS/Fe and IR-CS/Co in the form of metal nanoparticles dispersed in a carbon matrix are synthesized via the IR...     

Electric-pulse breakdown and the breakage of granite

The breakage of granite during the action of an electric pulse is studied for a two-electrode system in the interelectrode distance range 10–300 mm and a power input of 3.6–100 J/mm per unit interelectrode length. Empirical dependences of the breakdown voltage, the breakage depth, the breakage output, and the specific energy consumption on the interelectrode distance are obtained.     

Stacking reactions of the borole complex Cp*Rh(η5-C4H4BPh) with the dicationic fragments [Cp*M]2+ (M = Rh or Ir)

The reaction of the (borole)rhodium iodide complex [(η-C₄H₄BPh)RhI]₄ with Cp^*Li afforded the sandwich compound Cp^*Rh(η-C₄H₄BPh) (4). The reactions of compound 4 with the solvated complexes [Cp^*M(MeNO₂)₃]²⁺(BF ₄ ⁻ )₂ gave triple-decker cationic complexes with the central borole ligand [Cp^*Rh(η-η⁵:η⁵-C₄H₄BPh)MCp^*]²⁺(BF ₄ ⁻ )₂ (M = Rh (5) or Ir (7)). The structure of complex 4 was established by X-ray diffraction. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1525–1527, September, 2006.     

Carbon nanostructures based on IR-pyrolyzed polyacrylonitrile

For the first time, it is shown that IR pyrolysis of a composite based on polyacrylonitrile and gadolinium chloride produces a metal-carbon nanocomposite where metal particles with a size of 4–11 nm form a fine dispersion in the structure of the carbon matrix. The carbon phase of the composite is a carbon-carbon nanocomposite with a structure in which carbon nanoparticles (bamboolike carbon nanotubes, carbon nanospheres, or octahedral carbon nanoparticles) are incorporated into the matrix graphite-like material.     

Magnetoelastic Effect in a Ferromagnet in an Acoustic Wave Field

Russian Physics Journal - A laboratory setup is considered intended for special physics workshops and demonstration experiments of a lecture course in general physics as well for a study of elastic...     

Extraction from soil and gas-chromatographic determination of hexachlorobenzene

The results of the solvent extraction of hexachlorobenzene from soil with o-xylene are presented. Two procedures were developed for the extraction of hexachlorobenzene from soil; they demonstrated low detection limits for this pesticide: 5 and 0.3 μg/kg, respectively.     

Investigation of anticancer activity of macrocyclic Schiff bases by means of 4D-QSAR based on simplex representation of molecular structure

Influence of the molecular structure of macrocyclic pyridinophanes, their analogues and some other compounds on anticancer activity (Leukemia, central nervous system (CNS) cancer, prostate cancer, breast cancer, melanoma, non-small cell lung cancer, colon cancer, ovarian cancer, renal cancer) was investigated by means of a new 4D-QSAR approach based on the simplex representation of molecular structures (SiRMS). For all the investigated molecules, the 3D structural models were first created and the set of conformers (fourth dimension) was used. Each conformer was represented as a system of different simplexes (tetratomic fragments of fixed structure, chirality and symmetry). Statistic characteristics of the QSAR partial least squares (PLS) models were satisfactory (correlation coefficient r=0.990-0.861; cross-validation coefficient CVR=0.914-0.633). The molecular fragments increasing and decreasing anticancer activity were defined. This information may be useful for the design and direct synthesis of novel anticancer agents.