Showing papers in "Radiation Physics and Chemistry in 2009"

TL;DR: Commercial food irradiation is increasing significantly in Asia, but decreasing in EU, while that of other food items that included health foods, mushroom, honey, etc.

TL;DR: In this article, high stable silver nanoparticles were successfully synthesized by gamma ray irradiation in the presence of sodium alginate, and their particle sizes were in the range of 6-30nm.

TL;DR: The Geant4 toolkit as mentioned in this paper is a toolkit for the simulation of high energy physics for medium and high energy applications, such as the LHC experiments at CERN.

TL;DR: Using a 90kW, 3MeV Dynamitron, the molecular weight of microcrystalline cellulose (MCC) was reduced from 82,000 to 5000Da with a dose of 100kGy as discussed by the authors.

TL;DR: The results obtained in the present study suggested that the C. pilulifera methanol extract may be a potential source of natural anti-photoaging.

TL;DR: The total mass attenuation coefficients (μm) for SiO2 and KAlSi3O8 natural minerals were measured at 221, 250, 595 and 880 keV photon energies.

TL;DR: In this article, compression molding of jute fabrics-reinforced polypropylene (PP) composites (50% fiber) was used to obtain the best tensile strength, bending strength, and impact strength.

TL;DR: In this paper, the cross-linking of polyamide molecules in the presence of high-energy radiation was verified by the increase of gel content at higher doses of high radiation dose.

TL;DR: In this article, high-density polyethylene/ethylene vinyl-acetate copolymer/magnesium hydroxide composites were crosslinked via high-energy electron beam irradiation in the presence of triallylisocyanurate.

TL;DR: In this paper, a deconvolution of the EPR spectra is proposed leading to the identification of intermediate radicals and to a radiolysis mechanism which validity is assessed with respect to free radical and radiation chemistry knowledge of carbohydrate systems.

TL;DR: In this article, the growth promotion behavior of sodium alginate (SA) on vegetable (red amaranth, Amaranthus cruentus L.), 3% aqueous solution of SA was irradiated by γ-radiation (Co-60) of various total doses (12.5-50.0 kGy) at a dose rate of 3.5kGy/h.

TL;DR: Ionizing radiation is able to inactivate the three pathogens of Botrytis cinerea, Diaporthe actinidiae, and Botryosphaeria dothidea in kiwifruit as mentioned in this paper.

TL;DR: In this paper, the authors present the current use of γ radiation in living free-radical polymerization and highlight the use of both techniques together as a combination to present an advance in the ability to prepare surfaces with desired, tunable and well-defined properties.

TL;DR: In this paper, the tamarind kernel powder was irradiated with 0, 5 and 10 kGy by gamma ray (GR) and electron beam, respectively, and the extraction yield was increased significantly by EB and GR irradiation, but there was no significant difference between irradiation types.

TL;DR: Gamma radiation has been used to covalently link polymer chains of [2-(Methacryloyloxy)ethyl]trimethylammonium chloride (MAETC) to cotton fabric by mutual radiation grafting.

TL;DR: Physical properties of starch from two cultivars of gamma-irradiated grain amaranth with different amylose content were investigated in this article, and the results showed that changes in storage modulus and loss modulus were significant.

TL;DR: In this paper, a blend hydrogel based on carboxymethyl cellulose (CMC) and carboxyethyl chitosan (cMCts) was prepared by γ-irradiation of a high concentrated CMC/CMCts aqueous solution and properties of the hydrogels, such as gel fraction, swelling ratio, gel strength, and metal adsorption for Pb and Au were investigated.

TL;DR: In this paper, the quality of hazelnuts was evaluated as a function of irradiation dose to determine dose levels causing minimal undesirable changes to hazelnut properties, such as peroxide value, hexanal content, fatty acid composition and volatile compounds.

TL;DR: In this article, an accurate description of the elastic scattering process for low-energy electrons in liquid water was provided by means of a free-parameter quantum-mechanical treatment.

TL;DR: In this paper, the effects of pH of buffer solution and the composition of the hydrogel system on the bovine serum albumin (BSA) adsorption capacity of chitosan-polyvinyl pyrrolidone (PVP) (CSPVP) hydrogels and release of BSA were investigated.

TL;DR: In this paper, the crosslink densities of EB-irradiated styrene-butadiene rubber (SBR) samples were measured by using a novel magnetic resonance crosslink density spectrometer (MRCDS).

TL;DR: In this paper, the contribution of protoporphyrin IX (PpIX) to enhanced generation of reactive oxygen species (ROS) under X-ray and UV irradiations was examined.

TL;DR: In this article, the effect of gamma irradiation on the natural antioxidants of irradiated cumin seeds was investigated by evaluating the radical-scavenging effect on the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, determination of ferric reducing antioxidant power (FRAP), total polyphenol content (TPC) and the antioxidant index by β-carotene/linoleic acid co-oxidation.

TL;DR: In this article, the enhancement of foaming abilities of liquid egg white and egg white powder by irradiation and its application for bakery product, LEW and EWP were irradiated at 0, 1, 2, and 5 kGy by Co-60 gamma ray.

TL;DR: In this paper, the yields of H2 produced by electron beam irradiation were investigated in a series of room-temperature ionic liquids comprising 1hexyl-3-methylimidazolium, 1-hexyl -4-(dimethylamino)pyridinium, and 1-butyl-1-methylpyrrolidINium, triethylammonium or trioctyl(tetradecyl)phosphonium cations associated with bis(trifluoromethylsulfonyl)imide an

TL;DR: Chlorophyll bleaching by UV-irradiation has been studied by absorbance and fluorescence spectroscopy in extracts containing mixtures of photosynthetic pigments, in acetone and n-hexane solutions, and in aqueous thylakoid suspensions as discussed by the authors.

TL;DR: In this paper, pecan nuts (Carya illinoensis ) were treated with gamma irradiation and evaluated for changes in vitamin E content and sensory properties, and a trained sensory panel found that irradiation at 1 kGy produced no significant changes in appearance, aroma, texture and flavor attributes.

TL;DR: In this paper, 4-vinylpyridine (4VP) was grafted onto polypropylene films (PP) by mutual irradiation method to give PP-g-4VP; N -isopropylacrylamide (NIPAAm) was then grafted on the PP- g- 4VP films to give (PP-g,4VP)-g-NIPaam by pre-irradiation method, using a 60 Co γ-source.

TL;DR: In this article, the physicochemical characteristics of the sludge were examined with various irradiation doses, sludge thicknesses and exposure times, and it was suggested that irradiation thickness was the key factor affecting the efficiency of solublization of solid organic matter, whereas exposure time would be the most critical parameter in inducing cell lysis in sewage sludge.

TL;DR: In this article, the micro-porous structures of the coating layer were generated by performing dip-coating process at high humidity levels (i.e. phase inversion process) and were found to be affected by the PEGDMA content and humidity level.