Egyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200101Improving of Grid Interface with NPP Based on Optimal Capacitor Placement167317510.21608/jntas.2020.22467.1016ENAhmed SAdailinshas , resrarch reactorSayedNagySaudi ArabiaJournal Article20191216The interface between Nuclear Power Plants (NPPs) and electric grids<br /> Deserves careful attention, especially in low-performance electric power<br /> systems. NPP, during shutdown and startup, are in essential need to reliable electric energy that should be delivered by power grid to NPP power house.Safety systems of the NPP are designed for continuous operation with limited variations in voltage and frequency from the nominal values. Hence electrical supply voltage and frequency should also be controlled within a defined narrow range.<br /> One way to improve grid characteristics is using Capacitors devices Capacitors are placed in distribution networks with various sizes to improve voltage profile and to control reactive power. This paper proposes a method for optimization of capacitors location and sizes, to improve the voltage profile as well as reduce power losses of electric grid connecting with NPP. The proposed technique is based on genetic algorithms and applied to 16-bus radial distribution network to assure its improvement.https://jntas.journals.ekb.eg/article_73175_f3ed6ac975827e9bd039347465c28d20.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200101Assessment of Diagnostic Reference Dose Associated with Computed Tomography Examination7147317710.21608/jntas.2020.21058.1013ENTaha MohamedAlfawwalphysics department, faculty of apple science.
umm al-Qura univ.0000-0001-8663-0748Saud HamedAllehyaniPhysics department- Faculty of applied college - Umm alQura UniversityAnas AlaaMihdhirPhysics department, Faculty of applied science, Umm AlQura UniversityMufeed MohamedOtiabeyRadiolhy Departmeny. KAMC, MakkahJournal Article20191216The current study is aimed to estimate the diagnostic reference dose levels (DRLs), the volume computer tomogram dose index (CTDIvol), the CT air kerma-length product (PKL,CT) and the effective dose (E) for head, chest and chest-abdomen-pelvic CT examinations performed on adults in King Abdullah Medical City (KAMC), Saudi Arabia. Demographic parameters (such as age, gender, weight, height) for a sample of 535 computed tomography (CT) patients and physical scan parameters (such as patient tube voltage (kV), reference and effective mill ampere-second (mAs), scan length, number of slices, and pitch factor) were collected from a picture archiving and communication system (PACS). CTDIvol and PKL,CT were studied for different patients weights (40 -60 kg, 60-80 kg, 80-100 kg and 100-120 kg). Mean CTDIvol, PKL,CT and effective dose for a standard weight (70 kg ±10%) was evaluated according to the three CT protocols considered and the results were, as follows: for head examinations – 61.8 mGy, 1212 mGy.cm and 2.55 mSv, respectively; for chest examinations- 13.1 mGy, 657.5 mGy.cm and 9.21 mSv, respectively; for chest-abdomen-pelvic examinations - 13.9 mGy, 782.5 mGy.cm and 11.73 mSv, respectively. The effective dose for the chest examinations was lower than the corresponding value communicated by the European study group under European Commission. The effective dose for head examinations, was slightly higher than the one communicated by the European Commission study due to differences in the scan length. It needs optimizing the radiation dose delivered to patients via periodical review of scan parameters for a protocol under study.https://jntas.journals.ekb.eg/article_73177_84e39d7dcea5933e5e33a7650a47bbac.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200224Effect of Volatile Oils and / or Gamma Irradiation on the 4th Instar Larvae of Galleria Mellonella15287337010.21608/jntas.2020.19151.1007ENHussein FaridMohamedBiological Application department, nuclear research Center, Egyptian Atomic Energy Authority , Egypt0000-0002-3289-8383Samira El-saidEL-NaggarBiological Application department, Nuclear research center, Egyptian Atomic energy authorityAbdelwahab AbdelmaksoudIbrahimEntomology Department, Faculty of Science, Benha University, EgyptNehad MohamedElbarkyEntomology Department, Faculty of Science, Benha University, EgyptMarwa Salah MohamedSalamaBiological Application Department, Nuclear Research Centre, Atomic Energy Authority, EgyptJournal Article20191105This study aimed at studying the effect of five volatile plant oils namely; Mentha piperita (Peppermint), Origanum marjorana (Marjoram), Plargonium graveolens (Geranium), Cymbopogon proxiomus (Lemongrass) and Ocimum basilicum (Basil), were used at different concentrations (0.625, 1.25, 2.50 and 5.00%) against the Greater wax moth, Galleria mellonella. Also, the combined effect of both gamma irradiations with the dose levels 0,100 and 150 Gy and the volatile oils were investigated against this pest. The results obtained showed that the percentage of the population was significantly decreased by increasing the concentration in most treatments. Adult emergence and sex ratio were fluctuated unmatched with the applied dose levels. The survival percentage was inversely correlated with the increase in concentration. Also the average larval and pupal period significantly increased among all concentrations at all treatments compared with the control treatment. High bioactivity of the botanical oils and gamma-irradiation doses against the Greater wax moth, Galleria mellonella, such results may offer an opportunity for developing alternatives to rather expensive and environmentally hazardous organic insecticides.https://jntas.journals.ekb.eg/article_73370_d4f6ccc54edd7727512712ef707c13cd.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200402Strategic and Sustainable Land Use Planning of Coastal Sites in Egypt29348029610.21608/jntas.2020.20542.1011ENSamiaMorsySiting and Environment Department
Egyptian Nuclear and Radiological Regulatory Authority0000-0002-3419-4494Journal Article20191205Coasts 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.https://jntas.journals.ekb.eg/article_80296_22889abd2b85fd996eaf348cf394e1a9.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200403IMPLEMENTING KNOWLEDGE MANAGEMENT PROGRAM AS A PART OF EFFECTIVE INTEGRATED MANAGEMENT SYSTEM FOR THE ETRR2 COMPLEX35478029710.21608/jntas.2020.21016.1012ENAyman AzabEisaNational Center of Radiation Researches and Technology (NCRRT)
Egyptian Atomic Energy Authority (EAEA)
Cairo, EgyptAlaaSalehNational Center of Radiation Researches and Technology (NCRRT)
Egyptian Atomic Energy Authority (EAEA)
Cairo, EgyptJournal Article20191215In the IAEA documentations focus on management, for example the recently issued IAEA Safety Requirements publication Leadership and Management for Safety (IAEA Safety Standards Series No. GSR Part 2), it is understood that the organization information and knowledge (both tacit and explicit) should be managed as a resource for effective implementation of the management system. Also, lack of a knowledge management program is one of the warning signs of a decline in safety culture. This paper focuses on enhancing the Knowledge Management performance as a main step to achieve the goal of applying the Integrated Management System to improve safety, operation efficiency and performance. The Egyptian Atomic Energy Authority (EAEA) is a governmental research Authority that owns the Egypt Second Research Reactor (ETRR 2) complex. This Complex contains three nuclear installations (ETRR2 Reactor, Fuel Manufacturing Pilot Plant-FMPP and Radioisotopes Production Facility-RPF) and Administrative and engineering building (headquarter of the complex), which have a fairly adequate knowledge base. The paper introduces a proposal of Knowledge Management Program design for the ETRR2 complex. The objective of the proposed plan is first to evaluate the existing Knowledge base and then implement effective Knowledge Management (KM) program in order to avoid risks to overall operations such as ‘Risk of Knowledge Loss’ and lower safety and productivity.https://jntas.journals.ekb.eg/article_80297_7f0bd2b7f1acfac8da5963ffc15eaf1a.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200101Biocontrol Mechanisms of Bacillus sp. and Its Application as a Bionanocomposite Against Rhizoctonia solani49658498210.21608/jntas.2020.25368.1020ENHeba Hamed BaioumyMaghrawyRadiation Microbiology Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Nasr City, Cairo, Egypt0000-0002-5895-2747OlaGomaaNational Center for Radiation Research and Technology (NCRRT), Radiation Microbiology Department, Atomic Energy Authority, Cairo, Egypt.HusseinAbd El KareemRadiation Microbiology Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Nasr City, Cairo, EgyptRefaeRefaeMicrobiology Department, Faculty of Agriculture, Cairo University. Giza, Cairo, EgyptSamirElGizawyMicrobiology Department, Faculty of Agriculture, Cairo University. Giza, Cairo, EgyptJournal Article20200113Black 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.https://jntas.journals.ekb.eg/article_84982_074f6656c79cc2fc44e8d0a78c186393.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200707Hepatitis C Patients with Progress of Disease Severity: Biochemical and Immunological studies679510111710.21608/jntas.2020.24286.1019ENN.M.Abdallah,Biochemistry Department, Faculty of Science, Ain Shams UniversityRaafat M.YousryNCRRTF.F.Abdel HamidBiochemistry Department, Faculty of Science, Ain Shams University.M.N.EI- RoubyDepartment of Cancer Biology, Virology and Immunology Unit, National Cancer Institute, Cairo University, Egypt.S.M.Abdel FattahDrug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT) Atomic Energy Authority (AEA)Journal Article20200219Hepatitis C infection has become epidemic with a rapid increase in the number of patients. Hepatitis C has some streaking among which are; most cases don't correlate with the histological of the hepatic biopsies of these patients. The present study aims at investigating some biochemical and immunological aspects among patients varying in degree of disease severity. The study includes 112 subjects; 24 healthy control and 88 CHC patients, grouped as follows: <strong>Group I</strong>: (control group), <strong>Group II:</strong> compensated chronic liver disease (without cirrhosis), <strong>Group III</strong>: decompensated with liver cirrhosis and G<strong>roup </strong><strong>IV: </strong>hepatocellular failure; end stage liver.
Results of the present study showed that serum aspartate and alanine transaminases (AST & ALT), gamma glutamyl transferase (GGT), alkaline phosphatase (ALP) activities, total and direct bilirubin, globulin, AST/platelet ratio index (APRI), globulin/platelet ratio, tumor necrosis factor-α (TNF-a), interferon-g (IFN-g), interleukins (lL-2 & IL-4), immunoglobulins (lgA, IgM and IgG), concentrations were increased significantly in all CHC patients groups while, albumin, albumin/globulin ratio <em>(AIG </em>ratio), platelets count, multivariate disriminant analysis (MDA) (based on 4 variables, AST/ALT,platelets, ALP & albumin), were decreased significantly in all CHC patients groups compared to the control group. <em>AST/ALT </em>ratio increased in all groups except <strong>Group II</strong>. CD4<sup>+</sup>% was significantly low in <strong>Group III</strong> and <strong>Group IV</strong>, while CD8<sup>+</sup>% decreased significantly in <strong>Group II & Group IV</strong>.
It was concluded that biochemical tests in combination with each other could diagnose serious pathological disorders. Furthermore, immune parameters possibly play a role in the degradation process of the liver. Although, immune system components contribute to the liver injury, they maintain low viral load in advanced stages.https://jntas.journals.ekb.eg/article_101117_865d796d27db7ddfbe18cf9f1ae86214.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200101Artisanal Gold Mining Activity in Northcentral Nigeria and Its Implications: Radiological Approach9711110774510.21608/jntas.2020.29717.1021ENMatthew TKoloDepartment of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, NigeriaMahmoudGominaDepartment of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, NigeriaBamideleAwojoyogbeDepartment of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, NigeriaOyelekeOlarinoyeDepartment of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, NigeriaJournal Article20200508Artisanal gold mining is one of the anthropogenic activities identified by the United Nations Scientific Committee on the Effects of Atomic Radiation as potential source of exposure to naturally occurring radionuclides. 40 surface soil samples collected at random from Gababiyu artisanal gold mining site in Minna Metropolis were assessed for their natural radioactivity using gamma spectrometric technique which employs NaI (Tl) gamma-ray detector. Specific activities of 226Ra, 232Th and 40K in the soil varied from 10.27±2.88 to 152.60±3.80, 32.67±1.93 to 185.90±6.06 and 35.18±1.45 to 947.50±7.51 Bq kg-1 respectively, with mean values of 65.06±4.20, 87.63±2.89 and 267.94±4.29 Bq kg-1 in sequence. Although 226Ra and 232Th recorded activity values slightly above world average, they are still within safety range prescribed by UNSCEAR. Computed average absorbed dose rate at 1 m above ground was 94.16 nGy h-1 with corresponding mean annual dose equivalent of 0.12 mSv.y-1. Furthermore, calculated average excess lifetime cancer risk was found to be 0.40×10-3, which is slightly above the UNSCEAR safety limit. Pearson correlation statistics identified 226Ra and 232Th as principal radionuclides responsible for the computed radiation risk variables. Although the results of this investigation does not show any immediate radiological risk, continuous monitoring of the gold mining site is encouraged in order to keep the radiation effects as low as reasonably achievable.https://jntas.journals.ekb.eg/article_107745_110e5a05e5e5723573ed4fb7514bc09b.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200820Irradiation Embrittlement of WWER RPV Steels Irradiated at High Fluences11311810885810.21608/jntas.2020.34215.1023ENAlexanderKryukovFBI Scientific and Engineering Centre for Nuclear and Radiation Safety0000-0003-3091-0411ValeryRubtsovFBI Scientific and Engineering Centre for Nuclear and Radiation SafetyVladimirLebedinskyFBI Scientific and Engineering Centre for Nuclear and Radiation SafetyJournal Article20200630A statistical analysis of data obtained during impact testing of surveillance specimen of 15 WWER-440 RPVs operating in Russia, Ukraine, Armenia, Hungary, the Czech Republic and Slovakia was performed. The raw data used were selected from the IAEA International Database. As a result of the analysis, the influence of P and Cu to Tk increase was observed at a fluence up to 5 x 10^20 cm^-2 (E > 0.5 MeV), more than double design end of life WWER-440 fluence value. A proposal to increase the application range of normative dependences ΔTk(F) on reactor pressure vessel from 3 x 10^20 cm^-2 to 5 x 10^20 cm^-2 has been prepared to amend the regulatory and technical documents regarding the adjustment of the residual life of WWER-440 RPVs. It will allow the WWER-440 RPV to be operated for 60-80 years without annealing the base metal and in some cases without annealing the irradiated welds.https://jntas.journals.ekb.eg/article_108858_2b6c677977a8708c505f6b02f22e912f.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200929Dielectric Monitoring the Effect Green Copper Oxide Nanoparticles Incubation with Baker's Yeast Cells Suspension11912311599810.21608/jntas.2020.32846.1022ENMoustafa HussienMoustafabiophysics, medical research institute,Alexandria universityJournal Article20200616The 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.https://jntas.journals.ekb.eg/article_115998_cebe68acf53e47bf43a495a4837dcae7.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200929Role of 5-Fluorouracil Chitosan Nanoparticles on Decreasing the Oxidative Stress in Mice Bearing Ehrlich Carcinoma12513411600010.21608/jntas.2020.36757.1025EN- HudaMohamedZoology Department, Faculty of Science, Ain Shams UniversityNeamatAhmedRadiation biology Department, National Canter for Radiation, Research and Technology, Egyptian Atomic Energy Authority.0000-0001-9528-9780- NefisaMekyZoology Department, Faculty of Science, Ain Shams University- UsamaSaidRadiation Biology Department, National Canter for Radiation, Research and Technology, Egyptian Atomic Energy Authority.Journal Article202007215-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.https://jntas.journals.ekb.eg/article_116000_54ce2f39d0c694d06c7fe1440f0a506f.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120201018Assessment of Radiation Leakage from Diagnostic Rooms of Radiology Department of a Teaching Hospital in Kano, Northwestern Nigeria13514311942810.21608/jntas.2020.23942.1018ENJoseph DlamaZiraBayero University Kano NigeriaUba SaniZikirullahibayeron University KanoIdrisGarbaBayero University KanoMohammedSidiBayero University KanoMohammedUmarBayero University Kano0000-0002-0213-0920Shem SilasBatureBayero University KanoJournal Article20200213<em>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.</em>https://jntas.journals.ekb.eg/article_119428_b114660d2a32a81df92ace653700a64e.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120200101Assessment of Level of Collimation for Pediatric Plain Chest Radiographs in a Teaching Hospital in Kano, Northwestern Nigeria14515212038310.21608/jntas.2020.23934.1017ENJoseph DlamaZiraBayero University Kano NigeriaAmina AMBayero University KanoMohammed SaniUmarBayero University Kano0000-0002-0213-0920MohammedSidiBayero University KanoShem SilasBatureBayero University KanoFlavious BoboinNkubliDepartment of Medical Radiography, University of MaiduguriJournal Article20200213<em> Collimation of x-ray beam is an important factor in optimization; good collimation will both minimize the radiation dose to the patient and improve image quality because the amount of scattered radiation will increase as if a large volume of tissue is irradiated. This study aimed to assess the level of collimation for pediatric plain chest radiographs in Aminu Kano Teaching Hospital as an optimization tool. A retrospective audit was conducted on pediatric plain chest radiographs from May 2016 to May 2019 in Aminu Kano Teaching Hospital (Kano, Nigeria) using a simple random sampling technique. Data were collected and recorded using self-developed data capture sheet based on the European Guidelines on quality criteria for diagnostic radiographic images in pediatrics which captures the gender, age, projection, collimation (4 ways, 3 ways, 2 ways, 1 way, no and under collimation). The results showed that the most predominant age group exposed in the study was within 0 to 1 year representing 31.7% (n=76). Also gender distribution showed that more male were exposed than female, representing 55% (n=132). Out of 240 plain chest radiographs, about 77.0% (n=175), showed inadequate collimation. In conclusion,the study revealed poor collimation practice in pediatric plain chest radiographs. </em>https://jntas.journals.ekb.eg/article_120383_6f138ff2d0acf33b673ce7c79f209426.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120201025Silica Nano Particles Bait Against the Black Cutworm, Agrotis ipsilon (Hufn.)15316212038410.21608/jntas.2020.38203.1026ENHassan AlyMesbahplant protection, Faculty of agriculture Saba Basha, Alex. Univ, Alexandria, EgyptAhmed MohamedKordyPlant Protection Dept., Faculty of Agric. (Saba Basha), Alexandria Univ.0000-0002-8361-2920Elsayed HassanTayebPlant protection, Faculty of agriculture Saba Basha,Alex. Univ, Alexandria, EgyptAhmed KamalMouradPlant protection, Faculty of agriculture Saba Basha, Alex.Univ, Alexandria,EgyptMahasen MohamedEl-ShershabyPlant Protection Research Institute Agriculture research center ,EgyptNashaat HassanEL-WakelPlant Protection Research Institute, Agriculture research center ,Cairo, EgyptJournal Article20200806The present study was conducted to determine the effect of baits containing nano particles of silica against the fourth instar larvae of <em>Agrotis ipsilon </em>(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.https://jntas.journals.ekb.eg/article_120384_9d8409f90c128a8205e3a4bddc8e69f1.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120201026Delayed Toxicity for Two Botanical Dusts on Black Cutworm, Agrotis ipsilon (Hufnagel)16317712042610.21608/jntas.2020.38217.1027ENAhmed MohamedKordyPlant Protection Dept., Faculty of Agric. (Saba Basha), Alexandria Univ.0000-0002-8361-2920Hassan AlyMesbahplant protection, Faculty of agriculture Saba Basha, Alex. Univ, Alexandria, EgyptElsayed HassanTayebPlant protection, Faculty of agriculture Saba Basha,Alex. Univ, Alexandria, EgyptAhmed KamalMouradPlant protection, Faculty of agriculture Saba Basha, Alex.Univ, Alexandria,EgyptMahasen MohamedEl-ShershabyPlant Protection Research Institute Agriculture research center ,EgyptNashaat HassanEL-WakelPlant Protection Research Institute, Agriculture research center ,Cairo, EgyptJournal Article20200806The 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.https://jntas.journals.ekb.eg/article_120426_32d2977186554a2aab627541782be4f5.pdfEgyptian Society of Radiation Research and Applied Sciences, (ESRSA)Journal of Nuclear Technology in Applied Science2314-82098120201202A Study of Water Phantom Homogeneity from DICOM CT-Images Based on ImageJ17918612702410.21608/jntas.2020.38220.1028ENYatiHardiyantiPhysics Department, Faculty of Mathematics and Natural Sciences, institut Teknologi Bandung, Bandung, IndonesiaSra HarkePratamaDepartment of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, IndonesiaThareqBarasabhaDepartment of Medicine, Faculty of Medicine, Universitas Brawijaya, Malang, IndonesiaNovitrianNovitrianDepartment of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bansung, Bandung, IndonesiaFreddyHaryantoDepartment of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, IndonesiaAbdulWarisDepartment of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, IndonesiaJournal Article20200821The real data for water phantom have complex variations in the distribution of CT (Computed Tomography) number values for each slice. Thus, the accuracy of dose calculation on a homogeneous medium becomes very important to be reviewed. This study aims to review the distribution of CT numbers (in Hounsfield Units, HU) in a water phantom homogeneity determination. The water phantom was of the IBA dose 1 type, with dimensions of 40 cm x 35 cm x 35 cm. The image dimensions were 500 x 500 mm2 with a 1 mm pixel thickness, and 512 x 512 matrix size at image reconstruction. The overall division of water phantom slices was taken from the z-direction or parallel to the patient table into 441 slices. Water phantom homogeneity determination consisted of scanning procedures and image processing. Based on the analysis of the CT number distribution of all slices, the accepted slices were composed of 350 water and 18 acrylic slices. Furthermore, 42 anomaly slices were identified from the calculation of mean and standard deviation. The ROI (Region of Interest) was also considered, reducing water CT number to 53.06 HU. Based on this study, a method for homogeneity determination from the distribution of CT numbers in water phantom IBA Dose 1 was developed.https://jntas.journals.ekb.eg/article_127024_bed7af435832398d7858fd0dd94cd70f.pdf