Journal of Radiation Research and Applied Sciences 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.

Investigation of awareness levels about the radiation safety of personnel working in the imaging units of the hospitals in Agri, Turkey
Publication date: Available online 11 December 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): Ebru Senemtaşi Ünal, Kadir Geliş, Pınar Baykan Radiation 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 radi...
Source: Journal of Radiation Research and Applied Sciences - December 12, 2017 Category: Physics Source Type: research

Evaluation of radon related parameters in environmental samples from Jazan city, Saudi Arabia
Publication date: Available online 12 December 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): M. Abo-Elmagd, Ahmed Saleh, G. Afifi Environmental samples like soil, building materials and decorative materials are the major source of indoor radon. The contribution of these environmental materials toward indoor radon level depend upon the radium content and radon exhalation rates and can be used as a primary index for radon levels in the dwellings. Sealed cup technique was used to determine the radon exhalation rates and the effective radium content in different environmental samples collected ...
Source: Journal of Radiation Research and Applied Sciences - December 12, 2017 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: Available online 6 December 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): Ekaterina S. Evstratova, Vladislav G. Petin The 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 densel...
Source: Journal of Radiation Research and Applied Sciences - December 6, 2017 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 - November 22, 2017 Category: Physics Source Type: research

Evaluation of advanced medical imaging services at Governmental Hospitals-Gaza Governorates, Palestine
Publication date: Available online 22 November 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): K.M. Abushab, M.D. Suleiman, Y.S.M. Alajerami, S.I. Alagha, M. ALnahal, A. Najim, M. Naser Medical imaging services are the key tool to diagnose many diseases and have an important role in monitoring treatment and predicting outcome. The current study conducted to evaluate advanced medical imaging services (CT and MRI) at Governmental Hospitals-Gaza Governorates, Palestine. Triangulated study design was used (checklist, questionnaire and key informant interview). The researcher used arbitrated c...
Source: Journal of Radiation Research and Applied Sciences - November 22, 2017 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 - November 22, 2017 Category: Physics Source Type: research

Single floating cell irradiation technique with an X-ray microbeam
Publication date: Available online 14 November 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): Fuminobu Sato, Kikuo Shimizu, Isao Murata A 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 - November 15, 2017 Category: Physics Source Type: research

Measurement of radioactivity concentration in soil samples around phosphate rock storage facility in Richards Bay, South Africa
Publication date: Available online 9 November 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): F.B. Masok, P.L. Masiteng, R.D. Mavunda, P.P. Maleka, H. Winkler Mining, mineral processing and industrial activities have long been linked to increased levels of radioanuclides in soil in their vicinity. In this work, concentrations of naturally occurring radionuclides in soil samples collected around a rock phosphate storage facility in Richards Bay in South Africa were determined. A total of 90 soil samples were collected and analyzed for 238U and 232Th using neutron activation analysis and 226R...
Source: Journal of Radiation Research and Applied Sciences - November 10, 2017 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 - November 10, 2017 Category: Physics Source Type: research

Risk assessment of radon in the South Dayi District of the Volta Region, Ghana
Publication date: Available online 6 November 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): Charles Y. Ansre, Michael K. Miyittah, Aba B. Andam, Daniel E. Dodor Radon is a globally present and known radioactive gas with its ability to cause lung cancer as its major health implication. Ghana currently lacks national policies on radon gas and substantive radon vulnerability map largely due to lack of adequate baseline radon concentration data for the entire country. LR115 type II detectors were deployed in 30 sites/homes within the South-Dayi District. The detectors were retrieved after spec...
Source: Journal of Radiation Research and Applied Sciences - November 7, 2017 Category: Physics Source Type: research

Dosimetric evaluation of scattered and attenuated radiation due to dental restorations in head and neck radiotherapy
Publication date: Available online 31 October 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): Mona Azizi, Ali Asghar Mowlavi, Mahdi Ghorbani, Behnam Azadegan, Fatemeh Akbari In radiotherapy of head and neck cancer, the presence of high density materials modifies photon dose distribution near these high density materials during treatment. The aim of this study is to calculate the backscatter and attenuation effects of a healthy tooth, Amalgam, Ni-Cr alloy and Ceramco on the normal tissues before and after these materials irradiated by 6 and 15 MV photon beams, respectively. All measurements...
Source: Journal of Radiation Research and Applied Sciences - November 1, 2017 Category: Physics Source Type: research

Biodegradation of naphthalene by Bordetella avium isolated from petroleum refinery wastewater in Egypt and its pathway
Publication date: Available online 23 October 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): M.A.M. Abo-State, B.Y. Riad, A.A. Bakr, M.F. Abdel Aziz Wastewater and Sludge samples polluted with petroleum oil from Cairo Oil Refining Company (CORC), Mostorod, El-Qalyubiah, Cairo, Egypt. were used for isolation of indigenous bacterial communities. The isolation of bacterial strains followed four steps of adaptation and enrichment technique for selection of the most Naphthalene tolerant bacterial strains. Screening on four Naphthalene concentrations to determine the most potent strains having th...
Source: Journal of Radiation Research and Applied Sciences - October 24, 2017 Category: Physics Source Type: research

Determination of radioactivity concentrations in soil samples and dose assessment for Rize Province, Turkey
In this study, the activity concentrations of naturally occurring 40K, 238U, and 232Th radionuclides and of the artificial, Chernobyl accident-induced 137Cs radionuclide were measured in soil samples collected from Rize Province in the Black Sea region of Turkey. Rize is a city located in the Northeastern District of Turkey, which was significantly affected by the 1986 Chernobyl nuclear reactor accident in Ukraine, and the effects have continued to today. Tea is the main production plant of the region, and was contaminated by the artificial radioactivity. Therefore, measurements of residual 137Cs contamination in soil are ...
Source: Journal of Radiation Research and Applied Sciences - October 12, 2017 Category: Physics Source Type: research

Efficiency of energy conversion and growth of gamma irradiated embryos and young seedlings of Triticum monococcum L. cultivar Einkorn
Publication date: Available online 7 October 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): Eben von Well, Annabel Fossey, Mardé Booyse The study was conducted to determine whether the efficiency of energy conversion into growth can be used as an indicator for the determination of the optimal gamma irradiation dosage for mutation breeding. To meet this objective, embryo growth, shoot growth, root growth, mobilization of food reserves, respiration and energy conversion were studied in gamma-irradiated wheat Triticum monococcum L. cultivar Einkorn kernels. Kernels were exposed to 50, 150, 250...
Source: Journal of Radiation Research and Applied Sciences - October 7, 2017 Category: Physics Source Type: research

Control of imipenem resistant-Klebsiella pneumoniae pulmonary infection by oral treatment using a combination of mycosynthesized Ag-nanoparticles and imipenem
Publication date: Available online 29 September 2017 Source:Journal of Radiation Research and Applied Sciences Author(s): Marwa M. Abdel-Aziz, Mohamed Yosri, Basma H. Amin Klebsiella pneumoniae (Kp) a common cause of pneumonia leads to intense lung injury and mortality that are correlated with infective exacerbations. A significant increase in the prevalence of imipenem resistant K. pneumoniae (IRKP) has been observed in common human pathogens. The rapid emergence of IRKP has limited the availability of anti-bacterial treatment options. Silver nano-particles (AgNPs) are one of the well-known antibacterial substances ...
Source: Journal of Radiation Research and Applied Sciences - September 30, 2017 Category: Physics Source Type: research