[en] Chlorinated organic compounds and dioxins emission are very harmful to the environment and human's health due to their carcinogenic and mutagenic effect. Decomposition of chlorinated organic compounds and dioxins contained in the industrial off-gases by using electron beam technology is reviewed. General mechanism of CI-VOCs by using EB technology is outlined. Experiments of CI-VOCs treatment from laboratory scale to the pilot scale are described. It is drawn a conclusion that EB is a promising technology to remove multiple pollutants from off-gases including chlorinated organic compounds and dioxins. (author)

[en] AC complex susceptibility, χ' and χ double-prime, DC magnetization and electrical resistivity of sintered superconductors Bi-Pb-Sr-Ca-Cu-O and Y-Ba-Cu-O have been measured. The results show two non-linear 2/3 power behaviors: field dependence of χ double-prime peak temperature, a quasi de Almeida-Thouless line, and a irreversibility line. The former corresponds to the property of intergrain material measured at low field, it can be interpreted by superconductive glass state in high-T_c superconductor and/or the weakly connected loop mode. The later corresponds to the property of intragrain material measured at higher field dependences of width and height of χ double-prime peak are also exhibited. Finally, the authors have measured the I-V characteristics at 103.8 K for Bi-Pb-Sr-Ca-Cu-O sample and suggested the relation between the χ double-prime peak temperature and the zero dissipation temperature

[en] Radiation-induced decomposition of 1,1-dichloroethylene(1,1-DCE) in air was investigated in the experiment. The model gas prepared by mixing 1,1-dichloroethylene vapor with air was sealed in batch reactors and subjected to gamma irradiation. Inorganic products (CO + CO₂) and organic products were analyzed by means of a TOC analyzer and gas-chromatography, respectively. It was found that chloroacetyl chloride (CH₂ClCOCl) was present as the main organic product while inorganic products (CO + CO₂) occurred in quantities below 10% based on relative carbon balance. Energy consumption of 1,1-DCE by using gamma-ray irradiation was compared with that by using electron beam irradiation. (orig.)

[en] Complete text of publication follows. The preliminary test of NO_x and Polycyclic Aromatic Hydrocarbons (PAHs) removal from flue gas were investigated in the alcohol addition by using electron beam irradiation in EPS Kaweczyn. Experimental conditions were as follows: flue gas flow rate 5000 nM³/hr; humidity 4-5%; inlet concentrations of SO₂ and NO_x, which were emitted from power station, were 192 ppm and 106 ppm, respectively; ammonia addition is 2.75 m³/hr; alcohol addition is 600 l/hr. It was found that NO_x removal efficiency in the presence of alcohol was increased by 10% than without alcohol addition when the absorbed dose was below 6 kGy. The NO_x removal efficiency was decreased when the absorbed dose was higher than 10 kGy. In order to understand PAHs' behavior under EB irradiation, inlet PAHs (emitted from coal combustion process) sample and outlet PAHs (after irradiation) sample were collected by using a condensed bottle connected with XAD-2 adsorbent and active carbon adsorbent and were analyzed by a GC-MS. It is found that: at the 8 kGy adsorbed dose, concentrations of PAHs with small aromatic rings (≤3, except Acenaphthylene) are reduced and concentrations of PAHs with large aromatic rings (≤4) are increased. A possible mechanism is proposed

[en] Magnetic properties of the high T_c superconductors BiSrCaCuO and TlBaCaCuO were investigated systematically. Magnetic current densities were calculated from magnetic hysteresis loops of bulk and powdered samples by Bean model. The results showed that flux pinning in these materials is much weaker than that in YBaCuO

[en] This paper reports on the distribution of flux pinning energy in melt-textured growth (MTG) YBa₂Cu₃O₇ superconductor irradiated by fast neutrons determined by rotating-sample magnetic measurement at liquid nitrogen temperature. It was found that neutron irradiation strengthened flux pinning by increasing the most probable pinning energy along c-axis and in ab plane by 47% and 82% respectively. Anisotropy of flux pinning was also observed. New strong pinning sites might be created by neutron irradiation