Journal of Radiation Research and Applied Sciences 
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This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.Single floating cell irradiation technique with an X-ray microbeam
Publication date: January 2018Source: Journal of Radiation Research and Applied Sciences, Volume 11, Issue 1Author(s): Fuminobu Sato, Kikuo Shimizu, Isao MurataAbstractA single floating cell irradiation technique with X-ray microbeam has been developed for the microscopic research of radiation effects on floating cells in a liquid medium. This technique is a combination of X-ray microbeam and laser technologies. A preliminary experiment on the survival of budding cells of the yeast Saccharomyces cerevisiae (RAD52) was performed with the X-ray microbeam system. Micro-pits were fabricated on the bottom of a culture dish in a...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
The delayed appearance of haploid and homozygous diploid Saccharomyces cerevisiae yeast cells of wild-type and radiosensitive mutants surviving after exposure to gamma rays and alpha particles
Publication date: January 2018Source: Journal of Radiation Research and Applied Sciences, Volume 11, Issue 1Author(s): Ekaterina S. Evstratova, Vladislav G. PetinAbstractThe aim of this paper is experimental investigations of the delayed appearance of haploid and homozygous diploid Saccharomyces cerevisiae yeast cells of wild-type and radiosensitive mutants surviving after exposure to gamma rays and alpha particles. Delayed appearance of colonies exemplifying genetic instability are presented for cells surviving after radiation exposure to 60Co γ-rays and 239Pu α-particles. Relative biological effectiveness (RBE) of dens...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Depleted uranium residues, NORMs and 137Cs in the coastal zone soil of Musandam Peninsula, Hurmuz strait region, Sultanate of Oman
Publication date: Available online 8 January 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): Ibrahim H. SalehAbstractMusandam peninsula located at one of the most important marine strait overlooking the Arabian/Parisian Gulf. Environmentally, this area is characterized by its primitivistic status and vulnerable to any natural or manmade disturbances. This work presents the second phase of a comprehensive radiation measurement in Musandam Peninsula environment amid to investigating the presences of depleted uranium (DU) residues and assessing the current levels of 226Ra, 228Ra, 40K and 137Cs in surf...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Exploitation of Parthenium hysterophorous biomass as low-cost substrate for cellulase and xylanase production under solid-state fermentation using Talaromyces stipitatus MTCC 12687
Publication date: Available online 11 January 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): Amit Kumar Bharti, Amit Kumar, Alok Kumar, Dharm DuttAbstractTo make the enzyme production process appreciably inexpensive in respect of SSF, use of economical substrates is of great interest. Out of total eight employed solid substrate, Parthenium hysterophorous biomass exhibited its potential and displayed maximum endoglucanase (30 IU/gds), xylanase (582 IU/gds) and FPase (2.86 FPU/gds) activities. During optimization of cultural parameters, Talaromyces stipitatus MTCC 12687 produced maximum endoglucanas...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Radiological assessment of wastewater treatment processes based on the use of coal ashes as a filters
Publication date: Available online 1 February 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): L. Taoufiq, A. Laamyem, A. Boukhair, E. Essediqi, M. Monkade, A. ZrabdaAbstractCoal Fly Ash and Coal Bottom Ash are a solid waste generated from coal combustion. Recently, the management of these wastes has become an important subject for environmental researchers. Due to their physical and chemical characteristics, coal ashes were used in different fields like building material, agriculture and wastewater treatment. In the present investigation, a radiological assessment of Waste Water Treatment Plant (WW...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Spectrophotometric properties of azo dye metal complex and its possible use as radiation dosimeter
Publication date: Available online 2 February 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): S.M. Gafar, M.A. El-Kelany, S.R. El-ShawadfyAbstractThe current work describes the physico-chemical studies of two dosimetry systems. Aqueous solution of 1, 5 diphenyl carbazone (DPC) incorporating with chromium (III) to form a colored azo dye metal complex in two methods liquid and gel. Under the effect of γ-irradiation, the colored complex undergoes visual color change from red to colorless. The prepared complex can be used as a dosimeter and applicable in dose range 0.2–6; 0.02–1 kGy for both dos...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Pair production contribution effect on the calculation of gamma ray dose buildup factor for water and graphite in the energy range (4–10) MeV
Publication date: Available online 5 February 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): Laith A. Al-Ani, Hanan Mohammed JawadAbstractGamma ray buildup factor for two shielding materials, water (Zeff = 7.42) and graphite (Z = 6) for isotropic plane source normally incident within the energy range 4–10 MeV and up to 5 thickness mean free path has been studied. This research has been achieved by writing a simulation computer program in (Visual Basic language version G) and applied depending on Monte Carlo simulation method. The contribution of annihilation effect on the calculation o...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Nano-modification of polyamide thin film composite reverse osmosis membranes by radiation grafting
Publication date: Available online 18 February 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): M.B. El-Arnaouty, A.M. Abdel Ghaffar, M. Eid, Maysara E. Aboulfotouh, N.H. Taher, El-Sayed SolimanAbstractRadiation synthesis of reverse osmosis membranes were carried out by grafting of N-Isopropyl acrylamide (NIPAM) and ZnO nanoparticles incorporation onto polyamide thin film composite reverse osmosis membranes PA(TFC). The effect of monomer concentration, radiation time and concentration of ZnO nanoparticles on the grafting percent were investigated. The properties of the prepared grafted reverse osmos...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Effects of gestational hypertension in the pulsatility index of the middle cerebral and umbilical artery, cerebro-placental ratio, and associated adverse perinatal outcomes
Publication date: Available online 21 February 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): Hind H. Abdelwahid, Babiker A. Wahab, Mustafa Z. Mahmoud, Ahmed Abukonna, Elsir Ali Saeed TahaAbstractThis paper reports the effects of gestational hypertension in the pulsatility index (PI) of umbilical artery (UA) and middle cerebral artery (MCA), cerebro-placental ratio (CPR), and associated adverse perinatal outcomes, after 20 to 40 weeks’ gestation in singleton pregnancy. A total of 280 pregnant women, divided equally into control and gestational hypertension groups, were recruited prospectively. A...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Radiation exposure to dwellers due to naturally occurring radionuclides found in selected commercial building materials sold in Nigeria
Publication date: Available online 1 March 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): O. Maxwell, O.O. Adewoyin, E.S. Joel, C.O. Ehi-Eromosele, S.A. Akinwumi, M.R. Usikalu, C.P. Emenike, Z. Embong, M. HassainaAbstractThe activity concentration of 226Ra, 232Th and 40 K was measured in commonly building materials used in Nigeria from commercial supplier using High Purity Germanium Gamma (HPGe) detector. The mean activity concentrations in the samples were found to be 51.5 ± 9.3, 72.46 ± 17.65 and 217.05 ± 44.31 Bqkg−1 for 226Ra, 232Th and 40 K respectively. The highest radiu...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Determination of dose delivery accuracy and image quality in full - Field digital mammography
Publication date: Available online 1 March 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): E.K. Sosu, M. Boadu, S.Y. MensahAbstractAccuracy of dose delivered, image quality and some technical parameters of the Fujifilm – Amuletf full field digital mammography X-ray equipment has been undertaken. The study was conducted to review the overall condition of the first full – field digital mammography equipment in Ghana with the aim of optimizing mammography practice. Quality control assessment and Mean glandular dose estimation was performed using the International Atomic Energy Agency Human Health ...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Synthesis of polyvinyl alcohol and cuprous oxide (PVA/Cu2O) films for radiation detection and personal dosimeter based on optical properties
Publication date: Available online 8 March 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): Mohammed Ahmed Ali Omer, Emadeldin Abdeljabar Ali BashirAbstractThe aim of the current study was to synthesize polyvinyl alcohol Cuprous Oxide composite films (PVA/Cu2O) for radiation detection depending on optical changes. The method adapted from solving of 5% PVA in hot (80 °C) stirred water and after cooling to ambient temperature a 0.5 g of Cu2O dissolved and stirred for 2 h. The films were made by casting in petri dishes contained 20 ml/each. The pealed films were enveloped after drying and receiv...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Determination of a beam quality conversion factor from 60Co to 192Ir
Publication date: Available online 29 March 2018Source: Journal of Radiation Research and Applied SciencesAuthor(s): Luciana Tourinho Campos, Luis Alexandre Gonçalves Magalhães, Carlos Eduardo Veloso de AlmeidaAbstractRadiation dosimetry is an integral part of the radiation therapy process. The ultimate goal of radiation dosimetry is to determine the dose delivered to the tumor and to the normal tissues in a patient undergoing radiotherapy. The importance of HDR 192Ir brachytherapy as the main mode of treatment calls for an accurate dosimetry standard. A dosimetry standard for the direct measurement of absolute dose to w...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Inverted planar perovskite solar cells based on Al doped ZnO substrate
In this study, we present an inverted hybrid perovskite solar cell using Al doped Zinc Oxide (AZO) transparent metal oxide as substrate and anode electrode. Obtained results revealed that the AZO substrates prepared by RF magnetron sputtering with the optimal growth parameters have electrical and optical properties similar to properties of commercial Indium Tin Oxide (ITO), resistivity around 0.5 mΩcm and transparency around 85%. Hybrid perovskite thin films were coated onto the PEDOT:PSS/AZO and PEDOT:PSS/ITO substrates. The morphological, structural and optical properties of the perovskite films were comparatively stud...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
Alloying effect on K shell X-ray fluorescence cross-sections and yields in Ti-Ni based shape memory alloys
Publication date: April 2018Source: Journal of Radiation Research and Applied Sciences, Volume 11, Issue 2Author(s): Bünyamin Alım, İbrahim Han, Lütfü DemirAbstractK shell X-ray fluorescence cross-sections (σKα, σKβ and σK), and K shell fluorescence yields (ωK) of Ti, Ni both in pure metals and in different alloy compositions (TixNi1-x; x = 0.3, 0.4, 0.5, 0.6, 0.7) were measured by using energy dispersive X-ray fluorescence (EDXRF) technique. The samples were excited by 22.69 keV X-rays from a 10 mCi Cd-109 radioactive point source and K X rays emitted by samples were counted by a high resolution Si(Li) soli...
Source: Journal of Radiation Research and Applied Sciences - July 10, 2018 Category: Physics Source Type: research
