Probabilistic approach to determination of the dimensions of gravitational settling basins

Operating experience is presented for gravitational settling basins.     

Efficiency of the terahertz spin-injection emitter

The energy efficiency of the spin-injection emitter based on the rod-film ferromagnetic structure with a point contact between the components in the terahertz frequency range is experimentally estimated. The film material substantially affects the efficiency. A concentrator of magnetic flux is proposed for an increase in the efficiency. The experimental estimations allow the quantum yield of the emitter that is greater than unity. This result indicates significant contribution of the stimulated radiative transitions.     

Deformation Processes in Mechanothermoforming Productions

It is demonstrated that in addition to the rheologic characteristics of the blank material, the deformation kinetics is determined largely by a complex operating condition, which can be varied for intentional control of the processes. The deformation processes that occur during the drawing of blanks are not simply mechanical, but thermomechanical processes that depend on the temperature conditions of the production.__________Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 3, pp. 6–9, March, 2005.     

UG-10K unit for the preparation of polycaproamide flake directly from the melt

Khimtekstil'mash NPO (Chernigov). Translated from Khimicheskie Volokna, No. 5, pp. 39–40, September–October, 1993.     

Towards Verification of C Programs. C-Light Language and Its Formal Semantics

The C-light language is described, which is a representative subset of C. C-light permits deterministic expressions, limited use of switch and goto statements, and, instead of library functions for work with dynamic memory, includes C++ statements new and delete. A survey of structured operational semantics of the C-light language in Plotkin's style is given.     

Low Temperature Polymerization in p-Diethynylbenzene Crystal: Localization of Unpaired Electron in Poly-Conjugated System

Optical and ESR spectroscopy study has revealed that the stereo-regular polymer is formed under UV- or γ-irradiation of para-diethynylbenzene (DEB) crystals over a wide temperature range (77–300 K). It has been shown that the unpaired electron of the macro-radical of the propagating linear polymer chain (77–230 K) is localized on the terminal monomer link to give a doublet splitting in the ESR spectrum. Delocalization of unpaired electron in the poly-conjugated system takes place at 230–300 K by addition of the linear macro-radical to the double bond of the polymer. In this case, a normal polyene-type radical, observed during the polymerization of acetylenic monomers at elevated temperatures, is formed and shows singlet splitting with the width of ΔH = 1 mT in the ESR spectrum. The encounter of the macro-radical with the double bond probably occurs via polymer chain propagation.PACS numbers: 83.25 −x, 76.30 Rn, 33.35 +r