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.

New approach for antimicrobial activity and bio-control of various pathogens by biosynthesized copper nanoparticles using endophytic actinomycetes
Publication date: Available online 19 June 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): Saad EL-Din Hassan, Salem S. Salem, Amr Fouda, Mohamed A. Awad, Mamdouh S. El-Gamal, Abdullah M. Abdo The biosynthesis of nanoparticles by microorganisms especially endophytic species isolated from medicinal plant are the prime concern of researchers. In the present study, a novel, non-toxic, eco-friendly copper nanoparticles was biosynthesized by endophytic actinomycetes isolate Ca-1 and optimization processes have been endeavored. The endophytic actinomycete Streptomyces capillispiralis Ca-1, was i...
Source: Journal of Radiation Research and Applied Sciences - June 20, 2018 Category: Physics Source Type: research

Validation of a NaI(Tl) and LaBr3(Ce) detector's models via measurements and Monte Carlo simulations
Publication date: Available online 19 June 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): I. Mouhti, A. Elanique, M.Y. Messous, B. Belhorma, A. Benahmed This work relates to the study and characterization of the response function of two scintillation detectors with similar size: 2″×2″ NaI(Tl) and 2″×2″ LaBr3(Ce). The photon detection efficiency and energy resolution curve were measured for the NaI(Tl) detector in the gamma energy range from 60 keV to 1408 keV. A precise mathematical model of the two scintillators was developed using the Monte Carlo simulation code MCNP. Compa...
Source: Journal of Radiation Research and Applied Sciences - June 19, 2018 Category: Physics Source Type: research

Larvicidal potential of irradiated myco-insecticide from Metarhizium anisopliae and larvicidal synergistic effect with its mycosynthesized titanium nanoparticles (TiNPs)
This study provided the first report of the synergistic effect between irradiated M. anisopliae and their mycosynthesized TiNPs. Such a combination could represent an effective approach for reducing the likelihood of increased insect resistance to entomopathogenic fungi. (Source: Journal of Radiation Research and Applied Sciences)
Source: Journal of Radiation Research and Applied Sciences - June 19, 2018 Category: Physics Source Type: research

Effect of inclusion irradiated olive pulp in laying quail diets on biological performance
Publication date: Available online 14 June 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): N.S. Ibrahim, E.M. Sabic, A.M. Abu-Taleb A feeding trial was conducted to study the effect of replacing yellow corn ingredient as the major energy source in laying Japanese quail diets by 0, 5 and 10% each irradiated Olive Pulp (IOP) or un-irradiated Olive Pulp (OP). A total of 216 laying Japanese quail, 12 weeks-old were randomly divided into six equal treatments (36 birds/treatment) with three replicates (8 female, 4 male in each). The experiment was lasted for six weeks to evaluate OP or IOP as a sou...
Source: Journal of Radiation Research and Applied Sciences - June 15, 2018 Category: Physics Source Type: research

Natural radioactivity levels and evaluation of radiological hazards in some Egyptian ornamental stones
Publication date: Available online 12 June 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): A.M. Shohda, W.M. Draz, F.A. Ali, M.A. Yassien Geological materials usually contaminated with naturally occurring radioactive materials (NORM) have become a focus of great attention. The radioactivity concentrations of 226Ra, 232Th and 40K in some ornamental stones in Egypt, were measured using a high-resolution gamma ray spectrometer. The natural radionuclide contents, (Ra) equivalent activities and various hazard indices were also calculated to assess the radiation hazard. It was found that none of t...
Source: Journal of Radiation Research and Applied Sciences - June 12, 2018 Category: Physics Source Type: research

Design, fabrication and performance test of a fixed bed batch type pyrolysis plant with scrap tire in Bangladesh
Publication date: Available online 24 May 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): Mohammad Abdul Aziz, M.A. Rahman, Halim Molla This paper presents the design and construction of a fixed bed batch pyrolysis reactor. The reactor is further used for the production of pyro oil from scrap tire. The result shows that reactor yields a maximum pyro oil of 42 wt% at the temperature of 400 °C with a feed size of 15 cm3. The produced pyro oil has a higher viscosity of 4.5 cSt and heating value of 42.5 MJ/kg. Thus pyro oil cannot be used directly in engine operation but as a furnace o...
Source: Journal of Radiation Research and Applied Sciences - May 25, 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 2018 Source:Journal of Radiation Research and Applied Sciences, Volume 11, Issue 2 Author(s): Hung-Ngoc Dang, Chun-Li Wang, Horng-Liang Lay Effects 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 - May 12, 2018 Category: Physics Source Type: research

Radiological risks assessment of 238U, 232Th and 40K in fish feeds and catfish samples from selected fish farms in Ado – Ekiti, Nigeria
This study was carried out to ascertain the possibilities of radionuclides pollution due to catfish consumption in the study area. The activity concentrations of radionuclides were determined in catfish and fish feeds using gamma spectrometry method. Committed effective doses were inferred for adults and children of age 10 from the activity concentrations of 40K, 238U and 232Th in catfish. The results show that the annual committed effective doses for adults and children were all lower than the recommended 1.0 mSv y−1 limit for memebers of the public. This shows that the radiation dose incurred from the ingestion of ...
Source: Journal of Radiation Research and Applied Sciences - May 11, 2018 Category: Physics Source Type: research

Deterministic evaluation of safety parameters and neutron flux spectra in the MNSR research reactor using DRAGON-4 code
Publication date: Available online 22 April 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): Jamal Al Zain, O. El Hajjaji, T. El Bardouni, H. Boukhal Comparative studies for conversion of the fuel from high enriched uranium (HEU) to low enriched uranium (LEU) in the reactor (MNSR) were performed using DRAGON code deterministic. In this work the HEU fuel (UAl4-Al, 90% enriched with Al-clad) and LEU (12.6% UO2 enriched with zircaloy-4 alloy clad) cores were analyzed. This model was utilized in this work to calculate the neutron energy flux spectrum in the first inner and outer irradiation sites...
Source: Journal of Radiation Research and Applied Sciences - April 23, 2018 Category: Physics Source Type: research

Radiation awareness among physicians about the hazards of radiological examinations on the health of workers and their patients in Saudi Arabia
This study aims to estimate the knowledge and awareness of physicians about the hazards of radiological examinations on their health and on their patients. 466 questionnaires administered through a Google spreadsheet were answered by physicians from the 20 cities of Saudi Arabia. The sample included 167 radiologists, 106 neonatologists, 19 oncologists, 45 surgeons and 18 orthopaedists, 11 paediatricians and 100 physicians on different specialities. Only 133 of the physicians had received a radiation protection course in the workplace. A total of 73% from participants revealed many gaps in knowledge. For example, 51% of the...
Source: Journal of Radiation Research and Applied Sciences - April 15, 2018 Category: Physics Source Type: research

First trial of SiC/SiC tube fabrication for tungsten monoblock armor
This article is reporting the practical steps of the first trial fabrication of SiC/SiC tube with tungsten mono bloc armor which it is applicable for fusion reactors actively cooling system, where the proceeding to fabricate actively cooling system during the fusion reaction is very important; to decrease the large amount of heat flux produced from neutron irradiation, so the FEEMA project inside Muroran institute of technology has taken an anticipated trial to fabricate this mock up to contribute actively towards the future fusion reactors. The facilities which have been used during the experimental work representing on t...
Source: Journal of Radiation Research and Applied Sciences - April 10, 2018 Category: Physics Source Type: research

Morphological characterization and distribution of antennal sensilla of irradiated female mosquito, Culex pipiens (Diptera: Culicidae) with gamma radiation
Publication date: Available online 10 April 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): Hatem A.M. Ibrahim, S.G. Sawires, A.F. Hamza Culex pipiens mosquito is considered as one of the most dangerous insect pests that affect humans and animals worldwide as they transmit epidemic and fatal diseases. Antennal structure of the normal and irradiated female mosquito, Culex pipiens was examined using scanning electron microscopy to study the changes in the antennal segments and associated sensilla when 1–2 days old pupae were irradiated at low dose (20Gy), moderate (40Gy) and high (80Gy). The ...
Source: Journal of Radiation Research and Applied Sciences - April 10, 2018 Category: Physics Source Type: research

Determination of a beam quality conversion factor from 60Co to 192Ir
Publication date: Available online 29 March 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): Luciana Tourinho Campos, Luis Alexandre Gonçalves Magalhães, Carlos Eduardo Veloso de Almeida Radiation 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 wa...
Source: Journal of Radiation Research and Applied Sciences - March 30, 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 2018 Source:Journal of Radiation Research and Applied Sciences Author(s): Mohammed Ahmed Ali Omer, Emadeldin Abdeljabar Ali Bashir The 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 receivin...
Source: Journal of Radiation Research and Applied Sciences - March 9, 2018 Category: Physics Source Type: research

Radioprotective and immunomodulatory effects of Mesua ferrea (Linn.) from Western Ghats of India., in irradiated Swiss albino mice and splenic lymphocytes
In this study, Mesua ferrea methanolic (MfM) or aqueous extracts (MfA) significantly protected pBR322 DNA against radiation induced strand breaks. Both the extracts significantly offered protection against radiation-induced apoptosis as indicated by propidium iodide staining and DNA ladder assay. MfM or MfA significantly scavenged radiation derived free radicals indicating their antioxidant potential. MfM or MfA were orally administered to Swiss albino mice at 250 or200 mg/kg body weight respectively for 7 days. The study showed significant increase in the levels of glutathione, and activities of endogenous antioxidant e...
Source: Journal of Radiation Research and Applied Sciences - March 2, 2018 Category: Physics Source Type: research