Gluonium as Bound State of Massive Gluons Described by the Joos-Weinberg Wave Functions

On the basis of the Kadyshevsky equal-time (quasipotential) approach, a set of partial-wave equations is derived for the wave function of a gluonium, a bound state of two gluons. The field operators of constituent gluons are considered as six component quantities according to the Joos-Weinberg $2(2S+1)$- component approach. The quasiclassical quantization condition for relativistic two-particle states and the above set could be used for calculations of gluonium energy levels.Comment: LaTeX file. 15 pp., 1 postscript figur

A TR ESR Study of the Quenching of Photoexcited Dioxouranium (VI) Salts by Stable Nitroxyl Free Radicals

TR ESR spectroscopy was applied to the study of the quenching of excited dioxouranium (VI) (uranyl) nitrate and sulfate by stable nitroxyl radicals of the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) family. Photoexcitation of uranyl in solutions of alcohols of moderate viscosity (η = 3-10 cP) in the presence of TEMPO leads to CIDEP signals of TEMPO due to a radical triplet pair mechanism (RTPM). Polarized nitroxyls were also observed in solutions of polyelectrolyte sodium poly(styrenesulfonate), NaPSS, in the presence of the nitroxyl with a positively charged trimethylammonium group. Photolysis of uranyl salts in solutions of alcohols leads to the generation of free radicals of alcohols. No CIDEP of these radicals was observed, distinguishing U2 2+* from its organic analog, the triplet benzophenone. The probable reason for the lack of polarization in uranyl photoreduction reactions is the difficult access of free radicals to the U atom of the solvated radical UO2+ (V); this atom bears the unpaired electron. The role of polyelectrolytes in the enhancement of the quenching of excited states is discussed. Results are in agreement with the statement that photoexcited uranyl has a triplet multiplicity

Structural and topological analysis of electric energy consumption of municipalities as the basis for the development of the regional energy efficiency strategy

The amplifying polarization of the development of municipalities, the concentration of megalopolises' development possibilities and the decrease of potential of the development of small territories make it urgent to create tools for monitoring, estimating and forecasting of the electric energy consumption in order to develop the regional energy efficiency strategy, which will facilitate the sustainable development of municipalities. The paper gives the authors' definition of the energy efficiency of municipal units as the degree of real electric energy consumption compliance with the indicators of efficient energy consumption, along with providing comfortable habitation for the residents. The target indicators of municipal units' energy efficiency can be achieved by the efficient consumption and usage of electric energy. The authors carried out structural and topological analysis of electric energy consumption municipal units of the region, based on the sustainable development methodology. The formulated S-distributions of electric energy consumption of municipal units revealed a self-organization regularities in the region, which were reflected in municipal units' three-zone rating, formulated in accordance with electric energy consumption intensity. The results of the structural and topological analysis of electric energy consumption in absolute indicators and competitive speed indexes (intensity of electric energy consumption) are the basis for electric energy consumption forecasting of the region, as an integral structure formed by municipal units. © 2014 WIT Press.International Journal of Safety and Security Engineering;International Journal of Sustainable Development and Planning;WIT Transactions on Ecology and the Environmen

Polyurethane Nanocomposites

This review describes the present state of science and technology of photopolymerizable (UV-curable) polyurethane (PU) nanocomposites which include nanosilica and organically-modified clay (organoclay). A number of documented improvements of properties of PU nanocomposites compared to the pristine PU are presented. Many data on the structure and properties of PU nanocomposites were obtained not only for UV-cured urethane acrylate oligomers, but also for nanocomposites produced in the dark reactions. These data are critically reviewed. There is an expectation in the field of dramatic improvement of properties of PU nanocomposites under low loading (1-5 wt%) of organoclay

Magnetic and spin effects in the photoinitiation of polymerization

Application of a moderate external magnetic field increases the efficiency of triplet photoinitiators of polymerization. The reasons for this observation are briefly outlined. Such well-documented magnetic and spin effects as the magnetic isotope effect (MIE) and chemically induced dynamic nuclear and electron polarization (CIDNP and CIDEP) have been observed under the photolysis of photoinitiators. CIDEP results are emphasized. The study of CIDEP under the photolysis of initiators allows the detection and identification of free radicals of initiators and the spin multiplicity of the reacting photoinitiator (triplet or singlet). The transfer of the spin polarization of the initiator free radical to monomers is a promising technique for following radical reaction pathways. The results of a CIDEP study of the sensitized decomposition of phosphine oxide photoinitiators are presented