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.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 5, 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 5, 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 5, 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 5, 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 5, 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 5, 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 5, 2018 Category: Physics Source Type: research
Effect of nutrition, vitamin, grains, and temperature on the mycelium growth and antioxidant capacity of Cordyceps militaris (strains AG-1 and PSJ-1)
Publication date: April 2018Source: Journal of Radiation Research and Applied Sciences, Volume 11, Issue 2Author(s): Hung-Ngoc Dang, Chun-Li Wang, Horng-Liang LayAbstractEffects of subculture conditions on the mycelium growth and antioxidant capacity assessment of Cordyceps militaris trains AG-1 and PSJ-1 were carried out in laboratory during the autumn-winter season of 2015. Different temperature regimes and nutrition, vitamins levels, grain in substrate were evaluated for optimization on mycelium growth. The results showed that two strains AG-1 and PSJ-1 can grow the maximum mycelium radial at the temperature of 24 °C...
Source: Journal of Radiation Research and Applied Sciences - July 5, 2018 Category: Physics Source Type: research
Comparative modeling results for ridge waveguide MQW and hybrid Si/III-V lasers
In this study, 1550 nm ridge waveguide multi quantum well (MQW) and hybrid Si/III-V lasers are simulated and the results are studied in a comparative setting. InGaAsP active layers with a ridge waveguide length of 500 μm and width of 5 μm with six quantum wells are chosen for both MQW and hybrid Si/III-V lasers. The hybrid Si/III-V laser structure is obtained by integration of a ridge waveguide MQW semiconductor laser with a silicon-on-insulator (SOI) chip. The proposed structure allows laser mode to experience maximal gain available in the III-V region while maintaining a high coupling efficiency to Si-waveguide. The...
Source: Journal of Radiation Research and Applied Sciences - July 5, 2018 Category: Physics Source Type: research
Investigation of alloying effects on XRF parameters of 3d transition metals in Permendur49, Kovar and Ti50Co50 alloys
Publication date: April 2018Source: Journal of Radiation Research and Applied Sciences, Volume 11, Issue 2Author(s): Bünyamin Alım, Mine Uğurlu, İbrahim Han, Lütfü DemirAbstractThe alloying effects on X-ray fluorescence (XRF) parameters such as K shell fluorescence cross-sections (σKα, σKβ and σK), K shell average fluorescence yields (ωK) and K to L shell vacancy transfer probabilities (ηKL) of V, Ti, Fe, Co and Ni 3d transition metals in Permendur49 (Fe49Co49V2), Kovar (Fe54Ni29Co17) and Ti50Co50 alloys have been carried out by X-ray fluorescence studies. K X-ray intensity ratios of these 3d transition metals...
Source: Journal of Radiation Research and Applied Sciences - July 5, 2018 Category: Physics Source Type: research
Study of the effect of irradiation (60Co) on M1 plants of common bean (Phaseolus vulgaris L.) cultivars and determined of proper doses for mutation breeding
The objective of this study is to determine the morphological changes and the proper dose of gamma irradiation for the mutation breeding program of common bean (Phaseolus vulgaris L.). The effects of different doses (100, 150, 200, 250, 300, 350, 400, 450 and 500 Gy) of gamma irradiation (60Co) on seedling growth parameters and survival rates of the plants were investigated. In order to determine the proper dose and morphological changes; shoot length, root length, shoot fresh weight, shoot dry weight, root fresh weight, root dry weight, stem diameter, leaf width, leaf length, chlorophyll index and number of survival pla...
Source: Journal of Radiation Research and Applied Sciences - July 5, 2018 Category: Physics Source Type: research
IFC - Editorial Board
Publication date: April 2018Source: Journal of Radiation Research and Applied Sciences, Volume 11, Issue 2Author(s): (Source: Journal of Radiation Research and Applied Sciences)
Source: Journal of Radiation Research and Applied Sciences - July 5, 2018 Category: Physics Source Type: research
Investigation of awareness levels about the radiation safety of personnel working in the imaging units of the hospitals in Agri, Turkey
Publication date: April 2018Source: Journal of Radiation Research and Applied Sciences, Volume 11, Issue 2Author(s): Ebru Senemtaşi Ünal, Kadir Geliş, Pınar BaykanAbstractRadiation treatments, which are frequent and hidden hazards in imaging centers in hospitals, seriously affect employee health. In general, people think that there will be nothing to them because they do not know the damage of the radiation. It is not possible to stay away from radiation in some professions. For example, the radiology officials, their job is to identify the disease in people with radiographic method has no chance of dealing with radiat...
Source: Journal of Radiation Research and Applied Sciences - July 5, 2018 Category: Physics Source Type: research
Numerical analysis with experimental comparison in duct flow using optimized heat sinks
In this study, heat transfer and flow characteristics of hexagonal finned heat sinks which optimized according to the Taguchi experimental L18(21*37) design method in channel flow was analyzed numerically. Ansys-Fluent Icepak module was used in CFD analysis. The analysis carried out for two hexagonal finned optimized heat sinks in 3 different fin heights and 5 different flow velocities. Nusselt number increased with increasing Reynolds number for OH-1 and OH-2 heat sinks with all fin heights. Also, results showed that the friction factor decreased with increasing Reynolds number for all fin heights. According to CFD result...
Source: Journal of Radiation Research and Applied Sciences - July 5, 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 5, 2018 Category: Physics Source Type: research
