Showing papers in "International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry in 1990"

TL;DR: The GafChromicTM Dosimetry Media was found to offer ease of handling and high reproducibility, however, the radiation response is dependent on temperature and humidity.

TL;DR: In this paper, the rate of oxidation of [(P2O7)2FeIIIOH]6 to [(P 2O7]2FeIVO]6- by the OH radical has been determined in 0.1 M pyrophosphate at pH 10 by pulse radiolysis technique.

TL;DR: In this article, water was irradiated with 300 kHz ultrasound under an argon atmosphere containing various amounts of methane and ethane, and a temperature of about 2800 K was obtained for bubbles containing argon (plus water vapor and 20% CH 4 ) and T = 2000 K for pure methane.

TL;DR: In this paper, the authors studied the effects of radiation induced transformations of polyvinylpyrrolidone in diluted aqueous solutions using the technique of pulse radiolysis in connection with the measurements of scattered light intensity.

TL;DR: Although the kinetics of graft copolymerization point towards the lower dose rate gamma radiation sources, there are interesting possibilities with the use of electron beam processing and methods of increasing the radiation yields and reducing the formation of homopolymer will be emphasized.

TL;DR: In this article, L -α-lecithin was irradiated to different doses of radiation (0-660 Gy) at the dose rate 1.109 Gy s-1.1.

TL;DR: In this paper, the rate of formation and decay of aryl-peroxy radicals in diluted water solutions of toluene, naphthalene and β-methylnaphthalenes was determined.

TL;DR: In this paper, a group of 20 broiler chickens of the same genetic strain and reared under identical conditions were slaughtered at either 4, 5, 6, 7 or 8 weeks of age.

TL;DR: In this article, a review of the charge trapping and recombination mechanisms in LiF thermoluminescence dosimeters and several dosimetric properties of this material in the light of these processes are discussed.

TL;DR: In this article, storage studies were performed with ground black pepper samples of various water activity levels, either untreated or treated with gamma radiation doses of 4, 8, 16, and 32 kGy, respectively.

TL;DR: As the interest for radiation sterilization as the favourable, non polluting and simple method is increasing rapidly over the last five years, both gamma- and beta driven sterilization plants will be needed.

TL;DR: In this paper, it was shown that the rate of transfer and the equilibrium distribution are dependent on the polarities of the monomer, substrate and solvent as well as the concentrations of ionic solute and monomer molecular weight studies and the effect of other additives confirmed the proposed mechanism.

TL;DR: In 1988, there were over 90 EB accelerators for industrial use in Japan and the number one industrial application was Wire and Cable, the second was PE foam and Curing, and the third was Precure of tyre as mentioned in this paper.

TL;DR: In this article, a rotational viscometer was used to measure the apparent viscosity of ground black pepper samples in equilibrium with air of 25, 50% and 75% R.R.H.

TL;DR: In this article, Gamma irradiation treatment was used to determine its effect on the quality of papayas and mangoes irradiated at 0,5 to 0,95 kGy and the level of respiration, soluble solids, texture, vitamin C and the sensorial evaluation were effectuated.

TL;DR: In this article, the radiation-induced grafting of acrylamide onto low-density polyethylene by the different methods and under different conditions was investigated: by the direct liquid phase method from this monomer solution in water (in neutral and acid media) and acetone, and by the pre-irradiation method from aqueous solutions as well as from its sublimated vapour.

TL;DR: The current position regarding identification of irradiated food is described in this paper, where the most appropriate methods, very close to practical routine application, seem to be: the electron spin resonance technique, the luminescence techniques and the analysis of volatiles (originated mainly from the lipid fraction) and o-tyrosine.

TL;DR: In this article, the influence of the dose rate on the conversion efficiency has been investigated at the ITS for the first time by altering the irradiation conditions systematically, and the effect of irradiation dose is investigated.

TL;DR: A new dyed poly(methylmethacrylate) (PMMA) dosimeter, ‘GAMMACHROME YR’, has been specifically developed for radiation-processing dosimetery in the dose range 100 Gy to 3 kGy, with an order of magnitude greater response to radiation at the recommended spectrophotometric measurement wavelength.

TL;DR: The graphite or metal calorimeters are used to make absolute dosimetric measurements of high-energy electron beams, which are then used to calibrate several types of dosimeters for high-dose applications such as medical-product sterilization, polymer modification, food processing, or electronic-device hardness testing as discussed by the authors.

TL;DR: In this paper, a simulation of the primary stage of liquid water radiolysis has been made for irradiation by fast electrons with E 0 = 1, 5 and 10 keV.

TL;DR: In this article, it was suggested that formation of the imino-ketone and oxadiazole in both photolysis and radiolysis occurs via processes which do not involve the nitro radical anion as first transient species.

TL;DR: In this paper, studies on the viscosity behavior of 20 different spices or dried vegetables were performed with 20 unirradiated and irradiated samples and the results showed that the variations of viscosities depending on the origin of the samples can be estimated.

TL;DR: Computer calculations confirm the absence of dose rate effects up to 600 Gy per pulse and results are presented of computer simulations of dosimeter response based on the known reaction mechanism.

TL;DR: In this article, the radiation induced degradation of 1,2-dichloroethane, tetrachloroethylene as well as of a mixture of six chloronated hydrocarbons in addition to chlorobenzene in aerated water (pH ∼ 6.5) is reported.

TL;DR: The shelf life of packed minced meat has been increased at least threefold at 4°C by applying a 2 kGy dose as discussed by the authors, and the optimal average dose was 4 kGy for packed-frosen chicken.

TL;DR: In this article, the EDEPOS code was revised to improve its own output and the output of the multilayer depth-dose code EDMULT, which serves as a subprogram.

TL;DR: In this article, a regression analysis of the radiation parameters of nine aliphatic polyamides exposed to ionizing radiation leads to the conclusion that the decline in the ratio of chain scission to cross-linking in higher polyamide is best related to the linear increase in the methylene content of, or the number of methylene groups in, the polyamide repeat unit.

TL;DR: The results of the validation study of the code Dosmap against a Fricke reference dosimetry experiment indicate reasonable agreement is observed between the calculated, and measured values.