Journal of Nuclear Technology in Applied Science
EISSN : 2314-8217
Current Publisher: Zagazig University Medical Journal (10.21608)
Total articles ≅ 48
Latest articles in this journal
Published: 26 October 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 163-177; doi:10.21608/jntas.2020.38217.1027
The latent delayed toxicity for two botanical Camphore and Jamson weed grass fine dusts on Agrotis ipsilon were studied. Whereas, all the evaluated rates of Camphor grass were highly efficient and the number of alive larvae ranged between 6 and 13 larvae out of 30 larvae compared to the untreated check (28 larvae). Furthermore, the delayed results clearly indicated the significant difference between the tested rates and their effect on the raised larvae and revealed its adverse biophysiological effects on the development of both (F1) and (F2) generation that followed by a complete failure of (F3) generation, compared to the untreated check. The tested rates of Jimson weed grass fine dust caused significant reduction of the mean numbers in the surviving alive larvae of A. ipsilon and shows rapid complete failure to the development of the parent generation after larval treatment. Finally , the obtained data showed the effectiveness of the mixture of each Jimson weed with Camphor at a rate of (3:1) and (3:3) gm. fine dusts on the developmental sequence of the larvae of the parent generation that were exposed to the prepared baits. Therefore, the aim of this study is to find alternative methods to reduce the effect of chemical pesticides on the environment.
Published: 25 October 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 153-162; doi:10.21608/jntas.2020.38203.1026
The present study was conducted to determine the effect of baits containing nano particles of silica against the fourth instar larvae of Agrotis ipsilon (Hufn.) along sequential daily intervals post treatment under laboratory conditions. The determined percentages of larval mortality due to the admixed baits with SiNPs increased up to 100% after 15 days of application. The admixing of nanoparticles of silica in the bait during the sensitive period of larval development caused morphological abnormalities that are generally irreversible and often lead to death, beside certain biochemical changes of some inorganic elements in the haemolymph of the treated insects. It could be concluded that the tested nanoparticles of silica were most effective and indicated the highest concentration reductions of inorganic constituents in larval haemolymph, especially calcium, sodium and potassium. Therefore, more attention must be directed towards the inorganic constituents in the larval haemolymph as biomarkers for SiNPs efficacy.
Published: 18 October 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 135-143; doi:10.21608/jntas.2020.23942.1018
Diagnostic x-radiation is an essential part of present-day medical practice being the largest contributor of irradiation to the general population. Therefore, routine checking of x-ray tubes leakage is very important to ensure that leakage radiation at a one-meter distance from focus is less than 1mR/h. The measurement of background radiation was performed during normal departmental working hours: early in the morning before the machines were switched on, and after the machines were switched on. Exposures were performed using different exposure factors and the fall out radiation in both control and uncontrolled areas were also recorded. The highest equivalent dose rate was recorded in the uncontrolled area of room 2, where the mean dose rate was 26.21 μSv/h (in changing room) and 11.67 μSv/h (behind the door), respectively. It follows the dose rate measured in the uncontrolled area of room 1, where the mean dose rate was 6.33 μSv/h (behind the door), 2.96 μSv/h (in changing room B), and 1.56 μSv/h (in changing room A), respectively. The lowest radiation dose was measured in both controlled and uncontrolled areas of CT-scan, where the mean dose rate was 0.17 μSv/h and 0.16 μSv/h, respectively, simply because the room doors and wall are adequately lead-lined and protected. All values obtained in this study are within the permissible limit, except that for uncontrolled areas in x-ray rooms 1 and 2, where radiation dose rates were higher than the reference limit for public exposure.
Published: 29 September 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 125-134; doi:10.21608/jntas.2020.36757.1025
5-Fluorouracil (5-FU) as anticancer drug has many side effects. Site-specific delivery of 5-FU would reduce the systemic side effects and provide effective and safe therapy. Chitosan nanoparticles (CNPs) are used in drug delivery systems. In the present study the effects of 5-fluorouracil chitosan nanoparticles (5FUCNPs) on decreasing the oxidative stress were investigating within a model of female mice bearing solid Ehrlich carcinoma (EC). 7 days After solid tumor induction, 5-FUCNPs were administrated by gavages (0.5 mg/kg body weight) to mice for 15 days. Tumor size was monitored; oxidative stress markers were assessed. In addition, the angiogenic markers concentrations were evaluated. In vitro, 5FUCNPs showed high cytotoxic effect on EC tumor cells. Gavages of EC-bearing mice with 5FUCNPs significantly reduced tumor size, increased MDA level, decreased GSH level and recorded great destruction in tumor tissues. Meanwhile, in liver tissue MDA level significantly decreased and GSH level increased. On the other hand, a significant decrease in the levels of angiogenic markers were recorded. In conclusion: CNPs as a drug carrier for 5-FU have a role in reducing tumor growth and may represent a novel class of anticancer drug.
Published: 29 September 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 119-123; doi:10.21608/jntas.2020.32846.1022
The current era of emerging nano-technology has immersed us in a sea of nanomaterials used in different fields of life. Copper oxide nanoparticles (CuONPs) are used in many industrial and medical issues. many previous studies were conducted upon CuONPs cytotoxicity interaction upon the biological cells. The current monitoring interventions of cell viability was carried out by several methods mainly depends on cytolysis or membrane leakage. unfortunately many of these assays are invasive to cell and the others are toxic. on the other-side physical means interventions play a crucial role. Among Electrical impedance measurement was a rational tool to investigate the biological materials by the mean of two electrodes in a sophisticated designed measuring cell. The current attempt aims at dielectric monitoring in form permittivity and conductivity spectrum of green (CuONPs) incubation effect with baker's yeast cells suspension. CuONPs are characterized by electron microscopy and Fourier transformer infred(FTIR) was investigated under room condition.
Published: 20 August 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 113-118; doi:10.21608/jntas.2020.34215.1023
Published: 7 July 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 67-95; doi:10.21608/jntas.2020.24286.1019
The publisher has not yet granted permission to display this abstract.
Published: 22 April 2020
Journal of Nuclear Technology in Applied Science pp 49-65; doi:10.21608/jntas.2020.25368.1020
Black scurf disease caused by Rhizoctonia solani is a main yield limiting factor for potato tuber production as it leads to plant death. The present study aimed to isolate naturally occurring antagonistic bacteria that could control R. solani. Bacillus sp. was selected among of 84 isolates secured from rhizosphere of healthy potato plant based on its ability to suppress the growth of the pathogen R. solani. Phylogenetic analysis of this strain based on 16S rRNA gene sequences showed highest similarity (99%) with Bacillus sp.; it was deposited in the GenBank under the accession number of MK030136. The strain culture filtrate containing protease, diffusible antibiotic, hydrogen cyanide and siderophore was capable of inhibiting growth of the pathogen up to 15 days compared to 7 and 10 days for other Bacillus isolates. It also produces indole acetic acid which promoted plant growth. Morphological and structural changes that took place as a result of Bacillus sp. and R. solani interaction were evaluated using light, scanning and transmission electron microscopies. The results showed that Bacillus sp. caused loss of structural integrity, abnormal coiling, shriveling and lysis of the R. solani hyphae, in addition to complete cytoplasm and internal organelles depletion. The Bacillus sp. under study was immobilized on nanoclay to form a bionanocomposite, which was stable and exhibited the biocontrol efficiency along 8 months storage. Both in vitro and greenhouse experiments showed high inhibition of R. solani radial growth. Results indicate that the prepared bionanocomposite is a promising alternative to the commercial products.
Published: 3 April 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 35-47; doi:10.21608/jntas.2020.21016.1012
The publisher has not yet granted permission to display this abstract.
Published: 2 April 2020
Journal of Nuclear Technology in Applied Science, Volume 8, pp 29-34; doi:10.21608/jntas.2020.20542.1011
Coasts and sea fronts are the most desired destinations on Earth. There are two ways to deal with sea fronts: 1. To remain the property of the government and let them to private companies/developers who create services and make them accessible to the public in exchange for a certain fee. 2. To sell them to private developers who make them private and thus get used by a limited number of people who either own a property in the development and their guests or are hiring in it. The city of Alexandria represents alternative number one; the coast is visible and accessible to the public. From Alexandria city till Mersa Matruh city, alternative two was adopted; the sea is private belonging to private resorts. The public is not able to access the sea only to see it from afar. Far and above, land use can hardly be changed in the future, even if the need for energy projects increase. The objectives of this paper are to save what is remaining from the North coast (Mediterranean Sea) and the East coast (Red Sea) before being transformed into private gated communities. So that, seas remain accessible to all and sites for the construction of nuclear power plants and other renewable energy projects remain a future possibility for future generations.