[en] Radiation degradative polymer such as PMMA Polyisobutylene (PIB) can not be crosslinked by radiation without any addition of polyfunctional monomer. Until now no literature has reported on this topic. We try to radiation crosslink PMMA by blending with other radiation crosslinking polymers. (author)

[en] Radiation sterilization has been applied at the Institute of Nuclear Chemistry and Technology (INCT) since 1973. INCT facilities and activity in the field of radiation sterilization commercial service were described. (author)

[en] Radiation of polysaccharides generates various types of degraded fragments by random scission. Polysaccharides can be easily degraded both in powder foam and solution. The radiation degraded polysaccharides induce various kinds of biological activities such as anti-microbial activity, promotion of plant growth, suppression of environmental stress, phytoalexins induction and can be applied not only in agriculture but also in medical fields. In this paper, the biological activities induced by radiation of chitosan, alginate, carrageenan, cellulose and pectin are reviewed for the agricultural use. (author)

[en] This paper expounds the new progress on radiation processing in the 1990's in China. The exposition covers the detailed materials, tables and drawings representing the development of radiation processing technology, progress of the radiation processing technology facilities, scale and capability of radiation processing products which have been industrialized, etc. (author)

[en] A study has been carried out to investigate the effect of addition of fumed silica and hydroxy apatite into RV NR latex for the purpose of improvement of tear property of the films. Determination of water soluble protein in rubber films was also done using modified Lowry method to quantify the protein immobilization by the additives. Binding of the protein to the additives was found to enhance by addition of ZnO. Stability of the RV NR latex with fumed silica and hydroxy apatite was also evaluated. (author)

[en] The paper presents the results related to the mechanical and visco metric studies of the radiation induced effects on sodium alginate as a component of quaternary system of cellulose sulphate, poly(metilene-cogunidine) and calcium chloride used for encapsulation. The influence of absorbed dose on the mechanical resistance of capsules obtained for different sodium alginate systems demonstrate the enhanced stability of capsules from sodium alginate irradiated in the solid state under systems irradiated in aqueous solutions. The mechanical properties of the obtained capsules seem to be stable up to absorbed dose of 50 kGy. The distinct decrease of intrinsic viscosity indicates that the main change scission was the dominating process. (author)

[en] Fungicidal effects of chitosan and 75kGy-irradiated chitosan were investigated. In in vitro test on 8 strains of fungi, fungicidal effect of irradiated chitosan was higher than that of unirradiated one. In in vivo test, irradiated chitosan protected tea leaves against infection by Exobasidium vexans. The frequency of diseased leaves was 0.173 for tea bed sprayed with irradiated chitosan compared to 0.421 for the control. (author)

[en] Different stimuli-responsive hydrogels and membranes were synthesized using gamma-radiation. The synthesis regularities as well as some possible applications of these polymers in different areas are considered. (author)

[en] Radiation modification of chitin and modified cellulose was carried out. Films of polyethylene blended with starch, cellulose and agrowaste were prepared. Radiation Processing reduced the processing time for chitin, modified cellulose grafted with acrylic acid exhibited high water uptake while PE films blended with irradiated agrowaste were found to be biodegradable. (author)

[en] At present, the world market of electron accelerator is saturated with the reliable and efficient plants of 0.3-3 MeV energy range and the power of the beam extracted into air up to 150 kW. However, such accelerators cannot satisfy the demand of new energy-intensive technologies (mainly referred to as ecological), which require accelerators with the power of an electron beam ranging from a few hundreds of kilowatts to tens of megawatts. In its turn, the megawatt power complexes require modules with a minimum unit power of hundreds of kilowatts. (author)