Showing papers in "Radiation Physics and Chemistry in 2008"

TL;DR: In this paper, radio frequency (RF) plasma treatment in O2 was applied to modify the surface of poly (l-lactic acid) (PLLA) and poly (d, lactic acid)-coglycolic acid (PLGA) as biodegradable polymers.

TL;DR: In this article, the radiation-induced decolouration and degradation of aqueous solutions of azo dyes and their model compounds (anilines, phenols, triazines) are reviewed together with practical applications and the experimental methods (pulse radiolysis, steady-state gamma radiolyisation, as well as end-product analysis) used for studying the reactions.

TL;DR: In this article, the effect of gamma irradiation on the physical and structural properties of β-glucan has been evaluated, and it was shown that the average molecular weight of irradiated β- glucan significantly decreased as the irradiation dose increased.

TL;DR: In this paper, the effect of absorbed dose (kGy) and the chitosan:AMPS ratio on graft hydrogelization was studied and the structure of the prepared hydrogels was confirmed using infrared spectroscopy (IR).

TL;DR: In this paper, a model for the radiolysis of pure water describing the formation of H2, H2O2 and O2 and the radiation chemical transformations of aqueous solutions containing these compounds over a broad range of concentrations, pH, absorbed doses and dose rates is proposed and substantiated.

TL;DR: In this article, the effects of pH and dissolved O 2 on the γ-radiolysis of water were studied at an absorbed dose rate of 2.5 ǫ −1.

TL;DR: Pine nuts undergo gamma irradiation process with the doses 0.5, 1.0, 3.0 and 5.0 kGy as mentioned in this paper, and the changes in chemical, physical and sensory attributes were observed in the following 3 months of storage period.

TL;DR: In this paper, the most economical Ag NPs are produced at 5kGy γ-irradiation of a 2×10 −3 ǫ-M solution of AgNO 3 containing 0.5% starch.

TL;DR: Spectrophotometric measurements of the Fricke–gelatin–xylenol orange gel dosimeter demonstrated reproducible linear dose response up to 25 Gy, however, oxidation processes continue post-irradiation, affecting the response of this dosimetry system.

TL;DR: In this paper, the rate laws for the oxidation of cyanides were found to be first-order with respect to each reactant, and second-order rate constants decreased with increasing pH.

TL;DR: In this article, the effect of γ radiation on 1-butyl-3methylimidazolium tetrafluoroborate ([bmim][BF 4 ]) was investigated in detail.

TL;DR: In this article, the authors present recent progress in development of low-energy electron tracks in condensed media and high-energy proton tracks and discuss progress in characterizing DNA damage in terms of types and complexity.

TL;DR: In this article, polyethersulfone (PES) powder was grafted with acrylic acid (AAc) by simultaneous gamma-ray irradiation and the kinetics of the radiation induced graft polymerization was studied and the grafted PES powder was characterized.

TL;DR: In this article, electron-beam irradiation was used to inhibit the growth of pathogenic bacteria on baby food without impairing qualities, and the D10-vlaues of E. sakazakii, Bacillus cereus, and Salmonella typhimurium inoculated on powdered weaning food were 4.83, 1.22, and 0.98 kGy, respectively.

TL;DR: Results suggest that in higher LET regions, the repair enzymes used as probes are compromised because of the dense damage clustering in high LET regions.

TL;DR: In this paper, electron beam irradiation was applied as a pretreatment of the enzymatic hydrolysis of hemp biomass with doses of 150, 300 and 450 kGy.

TL;DR: After electron-beam irradiation of citrus pomaces (CP), the total phenolic content (TPC), radical scavenging activity (RSA), and reducing power (RP) were evaluated as mentioned in this paper.

TL;DR: In this paper, the effects of irradiation dose and the contents of PVA and agar on the swelling, rheological, and thermal properties of these hydrogels were investigated.

TL;DR: Radiation sterilization, crosslinking and degradation of the principal forms of drug carrier systems and the effects of irradiation on the release kinetics of APIs are discussed in light of radiation chemical principles.

TL;DR: In this article, the formation of solvated electrons in several ionic liquids composed of ammonium, pyrrolidinium and piperidine cations was examined by observing absorption spectra in the visible and near-infrared regions using pulse radiolysi.

TL;DR: In this paper, an epoxy resin (EP) matrix has been modified with carboxyl-randomized butadiene-acrylonitrile (CRBN) rubber and hydroxyl-terminated butadiENE-caroline-carboardboard rubber (HTBN).

TL;DR: In this article, the electron beam irradiation technique has been utilized to prepare hydrogel wound dressings, which are based on polyvinylpyrrolidone (PVP), poly(ethylene glycol) (PEG), and agar.

TL;DR: In this paper, the effects of dose rate, peroxide type/content in vulcanization system and ENB content of EPDM were studied to investigate the change in the extend of the modification/degradation of the mechanical properties of vulcanized EPDm via gamma irradiation.

TL;DR: In this article, electron beam irradiation was successfully applied to the preparation of Cu nanoparticles in aqueous solution under room temperature and ambient pressure using polyvinyl alcohol (PVA) as the surfactant.

TL;DR: In this article, a comparison between experiments, simulations and Xcom code has shown that the study has potential application for determining the attenuation coefficient of various compound materials, including Na 2 B 4 O 7, H 3 BO 3, CdCl 2 and NaCl.

TL;DR: In this paper, the Taguchi method was used for the synthesis of a superabsorbent hydrogel network using γ-rays as an initiator, energy source and crosslinker at the same time.

TL;DR: In this paper, thin films containing leuco-malachite green (LMG) dye in polyvinyl butyral (PVB) have been developed for dose measurements of a few hundreds Gy level.

TL;DR: In this article, the primary g values for three important products, hydrated electron (e − aq ), hydroxyl radical (·OH), and hydrogen peroxide (H 2 O 2 ) under the conditions of neutral pH were determined.

TL;DR: In this article, the effect of gamma-irradiation on the quality of peach fruit was studied, after harvesting at proper maturity stage, was irradiated in the dose range of 1.0-2.0

TL;DR: In this article, a binary mixture of N-isopropyl acrylamide (NIPAAm) and acrylic acid (AA) was grafted on polyester fabric as a base material to introduce thermosensitive poly( N -isopric acrylide) pendant chains having LCST slightly higher than 37°C in the membrane.